Pub Date : 2026-05-01Epub Date: 2026-01-21DOI: 10.1016/j.jcis.2026.139948
Guoxi Deng , Yaotao Huang , Mingxian Liu , Xiaodan Chen , Yuri Lvov
The widespread application of transition metal phosphides (TMPs) is often constrained by the use of hazardous and costly phosphorus precursors as well as energy-intensive synthetic routes. To address these limitations, we report a green aqueous-phase synthesis of nickel phosphide (Ni2P) nanomaterials using sodium phosphathynolate (NaOCP) as a safe phosphorus source and nickel (II) chloride as the metal precursor. The resulting Ni2P nanoparticles exhibit long-term stability, as indicated by the well-maintained X-ray diffraction patterns after 30 days of storage under ambient conditions. This synthetic approach was further extended to fabricate a spatially confined Ni2P@HNTs nanocomposite through in situ growth inside the lumen of halloysite nanotubes (HNTs). The confined environment led to a significant reduction in Ni2P particle size (from ∼80 nm to ∼3 nm) and promoted uniform dispersion. Both Ni2P and Ni2P@HNTs show high catalytic activity in the transfer hydrogenation of nitroarenes, delivering up to 98% yield with broad substrate scope. Notably, the Ni2P@HNTs composite displays enhanced stability and recyclability compared to unsupported Ni2P in the reduction of both nitrobenzene and substituted nitroarenes. This work establishes NaOCP as the phosphorus precursor for the aqueous synthesis of robust TMPs and demonstrates the efficacy of clay nanotube confinement in designing high-performance catalytic systems.
{"title":"Aqueous-phase synthesis of Ni2P within clay nanotube lumens for efficient catalytic nitroarene hydrogenation","authors":"Guoxi Deng , Yaotao Huang , Mingxian Liu , Xiaodan Chen , Yuri Lvov","doi":"10.1016/j.jcis.2026.139948","DOIUrl":"10.1016/j.jcis.2026.139948","url":null,"abstract":"<div><div>The widespread application of transition metal phosphides (TMPs) is often constrained by the use of hazardous and costly phosphorus precursors as well as energy-intensive synthetic routes. To address these limitations, we report a green aqueous-phase synthesis of nickel phosphide (Ni<sub>2</sub>P) nanomaterials using sodium phosphathynolate (NaOCP) as a safe phosphorus source and nickel (II) chloride as the metal precursor. The resulting Ni<sub>2</sub>P nanoparticles exhibit long-term stability, as indicated by the well-maintained X-ray diffraction patterns after 30 days of storage under ambient conditions. This synthetic approach was further extended to fabricate a spatially confined Ni<sub>2</sub>P@HNTs nanocomposite through in situ growth inside the lumen of halloysite nanotubes (HNTs). The confined environment led to a significant reduction in Ni<sub>2</sub>P particle size (from ∼80 nm to ∼3 nm) and promoted uniform dispersion. Both Ni<sub>2</sub>P and Ni<sub>2</sub>P@HNTs show high catalytic activity in the transfer hydrogenation of nitroarenes, delivering up to 98% yield with broad substrate scope. Notably, the Ni<sub>2</sub>P@HNTs composite displays enhanced stability and recyclability compared to unsupported Ni<sub>2</sub>P in the reduction of both nitrobenzene and substituted nitroarenes. This work establishes NaOCP as the phosphorus precursor for the aqueous synthesis of robust TMPs and demonstrates the efficacy of clay nanotube confinement in designing high-performance catalytic systems.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"709 ","pages":"Article 139948"},"PeriodicalIF":9.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146045971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-05-01Epub Date: 2026-01-24DOI: 10.1016/j.jcis.2026.139972
Stefania Garbujo , Chiara Baioni , Andrea Banfi , Leonardo Bolis , Giulia Bonvini , Elena Del Favero , Paola Gagni , Alessandro Gori , Linda Barbieri , Marco Davide Giustra , Giulia Tomaino , Lucia Morelli , Clizia Chinello , Fulvio Magni , Lucia Salvioni , Miriam Colombo , Davide Prosperi
Lipid nanoparticles (LNPs) have emerged as a clinically validated nonviral RNA delivery system. However, their limited tumor targeting remains challenging in oncology. In this work, LNPs were functionally integrated with cancer cell membrane components to enhance their targeting capabilities. The natural composition of tumor membranes was leveraged to promote both homotypic and heterotypic adhesion, exploiting cancer cell self-recognition and interactions with stromal cells in the tumor microenvironment. A biomimetic nanocarrier was developed by cloaking RNA-loaded LNPs with nanoghosts obtained from the membrane of triple negative breast cancer cells. Nanoghosts were dye-labeled and comprehensively characterized in terms of size, surface charge, protein composition, and membrane sidedness. The functional orientation of nanoghost membrane-associated proteins mediated homotypic binding with 4 T1 cells and heterotypic recognition of functionally validated cancer-associated fibroblasts and exhibited higher affinity for the latter, as confirmed through flow cytometry and confocal microscopy. RNA-LNPs were incorporated into nanoghosts using ultrasound-assisted fusion, yielding stable biomimetic LNPs with a multilamellar mRNA-LNP core enveloped by a nanoghost shell, as confirmed by Small-Angle X-ray Scattering. While uncoated LNPs showed negligible interaction with heterotypic cells, biomimetic LNPs displayed strong affinity for cancer-associated fibroblasts, enabling efficient internalization and RNA transfection. Additionally, the biomimetic coating enhanced LNP uptake in homotypic 4 T1 cells, resulting in significantly improved biological activity compared to uncoated LNPs. This work provides proof of concept that RNA-LNPs can be effectively integrated into biomimetic carriers to enable dual targeting of tumor and stromal cells. The enhanced selectivity and delivery performance of biomimetic LNPs highlight their therapeutic potential for overcoming stromal barriers in desmoplastic tumors such as triple negative breast cancer.
{"title":"Biomimetic lipid nanoparticles for RNA delivery to breast cancer microenvironment cells by enhanced homotypic and heterotypic adhesion","authors":"Stefania Garbujo , Chiara Baioni , Andrea Banfi , Leonardo Bolis , Giulia Bonvini , Elena Del Favero , Paola Gagni , Alessandro Gori , Linda Barbieri , Marco Davide Giustra , Giulia Tomaino , Lucia Morelli , Clizia Chinello , Fulvio Magni , Lucia Salvioni , Miriam Colombo , Davide Prosperi","doi":"10.1016/j.jcis.2026.139972","DOIUrl":"10.1016/j.jcis.2026.139972","url":null,"abstract":"<div><div>Lipid nanoparticles (LNPs) have emerged as a clinically validated nonviral RNA delivery system. However, their limited tumor targeting remains challenging in oncology. In this work, LNPs were functionally integrated with cancer cell membrane components to enhance their targeting capabilities. The natural composition of tumor membranes was leveraged to promote both homotypic and heterotypic adhesion, exploiting cancer cell self-recognition and interactions with stromal cells in the tumor microenvironment. A biomimetic nanocarrier was developed by cloaking RNA-loaded LNPs with nanoghosts obtained from the membrane of triple negative breast cancer cells. Nanoghosts were dye-labeled and comprehensively characterized in terms of size, surface charge, protein composition, and membrane sidedness. The functional orientation of nanoghost membrane-associated proteins mediated homotypic binding with 4 T1 cells and heterotypic recognition of functionally validated cancer-associated fibroblasts and exhibited higher affinity for the latter, as confirmed through flow cytometry and confocal microscopy. RNA-LNPs were incorporated into nanoghosts using ultrasound-assisted fusion, yielding stable biomimetic LNPs with a multilamellar mRNA-LNP core enveloped by a nanoghost shell, as confirmed by Small-Angle X-ray Scattering. While uncoated LNPs showed negligible interaction with heterotypic cells, biomimetic LNPs displayed strong affinity for cancer-associated fibroblasts, enabling efficient internalization and RNA transfection. Additionally, the biomimetic coating enhanced LNP uptake in homotypic 4 T1 cells, resulting in significantly improved biological activity compared to uncoated LNPs. This work provides proof of concept that RNA-LNPs can be effectively integrated into biomimetic carriers to enable dual targeting of tumor and stromal cells. The enhanced selectivity and delivery performance of biomimetic LNPs highlight their therapeutic potential for overcoming stromal barriers in desmoplastic tumors such as triple negative breast cancer.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"709 ","pages":"Article 139972"},"PeriodicalIF":9.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146083748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-05-01Epub Date: 2026-01-21DOI: 10.1016/j.jcis.2026.139953
Sophie Baker , Gareth R. Elliott , Erica J. Wanless , Grant B. Webber , Vincent S.J. Craig , Alister J. Page
Hypothesis
The phenomenon of underscreening, where the screening of the electrostatic potential in the bulk electrolyte is weaker than it should be according to the canonical Debye-Hückel theory, has significant implications for colloidal stability in highly concentrated electrolytes. Current experimental and computational investigations of this phenomenon have been limited to single mode analyses, despite statistical mechanics predicting that many modes are present simultaneously. We hypothesise that using a multi-modal approach will provide insights not yet observed.
Computational approach
Here we apply Fourier analysis to radial charge densities, derived from polarisable molecular dynamic simulations of aqueous alkali chloride electrolytes, to determine if multiple modes are present. Prony's method is then applied to a multi-modal ansatz to estimate screening lengths associated with each mode.
Findings
Fourier analysis revealed that there are many modes present in the radial charge density. For all electrolytes considered at low concentrations the dominant mode was a non-oscillatory Yukawa decay mode, while at higher concentrations modes with non-zero spatial frequencies dominated. Resulting screening modes with oscillatory wavelengths ∼5–15 Å from Prony's method agree with the largest experimental screening lengths from surface force apparatus and fluorescence experiments. Concurrently, screening lengths with shorter oscillatory wavelengths, 3–5 Å, have smaller magnitudes and agree with other experiments such as atomic force microscopy and optical second harmonic scattering experiments.
假设：根据规范的debye - h ckel理论，散装电解质中静电电位的筛选比应有的弱，这一现象对高浓度电解质中的胶体稳定性具有重要意义。目前对这一现象的实验和计算研究仅限于单模态分析，尽管统计力学预测许多模态同时存在。我们假设，使用多模态方法将提供尚未观察到的见解。计算方法：在这里，我们应用傅立叶分析径向电荷密度，从极化分子动力学模拟的水溶液氯碱电解质，以确定是否存在多种模式。然后将proony的方法应用于多模态分析，以估计与每个模态相关的筛选长度。结果：傅里叶分析表明，径向电荷密度存在多种模式。对于所有电解质，在低浓度下，主要模式是非振荡的汤川衰变模式，而在较高浓度下，非零空间频率模式占主导地位。从proony的方法得到的振荡波长为~ 5-15 Å的筛选模式与表面力仪和荧光实验的最大实验筛选长度一致。同时，振荡波长较短的筛选长度为3-5 Å，其量级较小，与原子力显微镜和光学二次谐波散射实验等实验结果一致。
{"title":"A multimodal screening length analysis of concentrated electrolytes","authors":"Sophie Baker , Gareth R. Elliott , Erica J. Wanless , Grant B. Webber , Vincent S.J. Craig , Alister J. Page","doi":"10.1016/j.jcis.2026.139953","DOIUrl":"10.1016/j.jcis.2026.139953","url":null,"abstract":"<div><h3>Hypothesis</h3><div>The phenomenon of underscreening, where the screening of the electrostatic potential in the bulk electrolyte is weaker than it should be according to the canonical Debye-Hückel theory, has significant implications for colloidal stability in highly concentrated electrolytes. Current experimental and computational investigations of this phenomenon have been limited to single mode analyses, despite statistical mechanics predicting that many modes are present simultaneously. We hypothesise that using a multi-modal approach will provide insights not yet observed.</div></div><div><h3>Computational approach</h3><div>Here we apply Fourier analysis to radial charge densities, derived from polarisable molecular dynamic simulations of aqueous alkali chloride electrolytes, to determine if multiple modes are present. Prony's method is then applied to a multi-modal ansatz to estimate screening lengths associated with each mode.</div></div><div><h3>Findings</h3><div>Fourier analysis revealed that there are many modes present in the radial charge density. For all electrolytes considered at low concentrations the dominant mode was a non-oscillatory Yukawa decay mode, while at higher concentrations modes with non-zero spatial frequencies dominated. Resulting screening modes with oscillatory wavelengths ∼5–15 Å from Prony's method agree with the largest experimental screening lengths from surface force apparatus and fluorescence experiments. Concurrently, screening lengths with shorter oscillatory wavelengths, 3–5 Å, have smaller magnitudes and agree with other experiments such as atomic force microscopy and optical second harmonic scattering experiments.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"709 ","pages":"Article 139953"},"PeriodicalIF":9.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146049582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-05-01Epub Date: 2026-01-16DOI: 10.1016/j.jcis.2026.139918
Yuanyuan Zhu , Xinghui Lu , Feiyang Yin, Qianqian Yan, Junhao Wu, Jixia Qiu, Wei Zhou, Na Qin, Xiao Wang, Sheng Zhang, Xing Lu
Photocatalytic CO2 reduction represents a fundamental route for solar-to-fuel conversion, yet its efficiency is often limited by rapid non-radiative recombination of photogenerated charge carriers induced by intrinsic deep-level defects. While extrinsic modifications have been widely explored, the targeted elimination of intrinsic deep-level defects remains a challenge. Herein, we report an electrochemical purification strategy that fundamentally resolves this issue in a conductive cobalt catecholate framework (Co-CAT). Starting from a mixed-valence Co2+/Co3+-CAT precursor containing electrochemically unstable Co3+ oligomers, precise potential control enables their selective removal, yielding a structurally relaxed and highly pure Co2+-CAT framework. Beyond defect removal, integrated GCMC, MD, and DFT simulations reveal that this purification process restores a uniform charge distribution, thereby achieving a well-balanced electronic-adsorptive-kinetic synergy. Endowed with localized Co 3d orbitals, selective CO2 capture, rapid mass transport, and suppressed competitive adsorption, the purified Co2+-CAT thus achieves markedly enhanced charge-transfer kinetics and reaction turnover. Consequently, the photocatalytic CO2-to-CO conversion rate improves by ∼80% (48 mmol g−1 h−1), surpassing all reported MOF-based CO2RR photocatalysis. This work establishes electrochemical purification as an effective strategy for enhancing intrinsic catalytic activity and proposes a simple materials design strategy to maximize photocatalytic performance through defect elimination and charge-distribution regulation.
{"title":"Electrochemical purification of a cobalt-catecholate framework to suppress non-radiative recombination boosts photocatalytic CO2 reduction","authors":"Yuanyuan Zhu , Xinghui Lu , Feiyang Yin, Qianqian Yan, Junhao Wu, Jixia Qiu, Wei Zhou, Na Qin, Xiao Wang, Sheng Zhang, Xing Lu","doi":"10.1016/j.jcis.2026.139918","DOIUrl":"10.1016/j.jcis.2026.139918","url":null,"abstract":"<div><div>Photocatalytic CO<sub>2</sub> reduction represents a fundamental route for solar-to-fuel conversion, yet its efficiency is often limited by rapid non-radiative recombination of photogenerated charge carriers induced by intrinsic deep-level defects. While extrinsic modifications have been widely explored, the targeted elimination of intrinsic deep-level defects remains a challenge. Herein, we report an electrochemical purification strategy that fundamentally resolves this issue in a conductive cobalt catecholate framework (Co-CAT). Starting from a mixed-valence Co<sup>2+</sup>/Co<sup>3+</sup>-CAT precursor containing electrochemically unstable Co<sup>3+</sup> oligomers, precise potential control enables their selective removal, yielding a structurally relaxed and highly pure Co<sup>2+</sup>-CAT framework. Beyond defect removal, integrated GCMC, MD, and DFT simulations reveal that this purification process restores a uniform charge distribution, thereby achieving a well-balanced electronic-adsorptive-kinetic synergy. Endowed with localized Co 3d orbitals, selective CO<sub>2</sub> capture, rapid mass transport, and suppressed competitive adsorption, the purified Co<sup>2+</sup>-CAT thus achieves markedly enhanced charge-transfer kinetics and reaction turnover. Consequently, the photocatalytic CO<sub>2</sub>-to-CO conversion rate improves by ∼80% (48 mmol g<sup>−1</sup> h<sup>−1</sup>), surpassing all reported MOF-based CO<sub>2</sub>RR photocatalysis. This work establishes electrochemical purification as an effective strategy for enhancing intrinsic catalytic activity and proposes a simple materials design strategy to maximize photocatalytic performance through defect elimination and charge-distribution regulation.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"709 ","pages":"Article 139918"},"PeriodicalIF":9.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146008385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-05-01Epub Date: 2026-01-18DOI: 10.1016/j.jcis.2026.139937
Liu Wan, Cheng Du, Mingjiang Xie, Jian Chen, Yan Zhang
The construction of well-defined heterointerfaces represents an efficient strategy for boosting supercapacitor electrode performance. Herein, we fabricated an advanced nickel molybdenum nitride (Ni0.2Mo0.8N)@nickel cobalt molybdenum-layered double hydroxide (NiCoMo-LDH) heterostructure by electrodeposition of NiCoMo-LDH on a porous Ni0.2Mo0.8N backbone. This heterostructure design integrates Ni0.2Mo0.8N and NiCoMo-LDH into an interconnected three-dimensional (3D) nanosheet network, which enhances redox activity, facilitates rapid ion transport, and ensures structural integrity. Density functional theory (DFT) analyses substantiate that the heterointerface engineering between Ni0.2Mo0.8N and NiCoMo-LDH induces charge redistribution at the heterointerfaces, improves charge carrier mobility, and enhances hydroxyl ion adsorption capability. The Ni0.2Mo0.8N@NiCoMo-LDH heterostructure electrode delivers a specific capacity of 1054.4C g−1 / 2425.2 mC cm−2 at 1 A g−1 while maintaining 95.7% capacity retention after 5000 cycles, outperforming the pristine Ni0.2Mo0.8N and NiCoMo-LDH in both capacity and durability. Furthermore, the hybrid supercapacitor (HSC) device based on the Ni0.2Mo0.8N@NiCoMo-LDH cathode achieves an energy density of 82.6 Wh kg−1 at 794.4 W kg−1, coupled with robust long-term cycling performance (96.0% capacity maintenance over 20,000 cycles). These results validate the effectiveness of rational heterostructure design with complementary constituents for next-generation energy storage applications.
构建定义良好的异质界面是提高超级电容器电极性能的有效策略。本文通过在多孔Ni0.2Mo0.8N骨架上电沉积NiCoMo-LDH，制备了先进的镍钼氮化（Ni0.2Mo0.8N）@镍钴钼层双氢氧化物（NiCoMo-LDH）异质结构。这种异质结构设计将Ni0.2Mo0.8N和NiCoMo-LDH整合成一个相互连接的三维（3D）纳米片网络，增强了氧化还原活性，促进了离子的快速传递，并保证了结构的完整性。密度泛函理论（DFT）分析证实，Ni0.2Mo0.8N与NiCoMo-LDH之间的异质界面工程诱导了异质界面上的电荷重新分布，提高了载流子迁移率，增强了羟基离子的吸附能力。Ni0.2Mo0.8N@NiCoMo-LDH异质结构电极在1 a g-1下的比容量为1054.4C g-1 / 2425.2 mC cm-2，在5000次循环后保持95.7%的容量保持率，在容量和耐用性方面优于原始Ni0.2Mo0.8N和NiCoMo-LDH。此外，基于Ni0.2Mo0.8N@NiCoMo-LDH阴极的混合超级电容器（HSC）器件在794.4 W kg-1时实现了82.6 Wh kg-1的能量密度，并且具有强大的长期循环性能（超过20,000次循环的容量维持率为96.0%）。这些结果验证了具有互补成分的合理异质结构设计在下一代储能应用中的有效性。
{"title":"Interface engineering of nickel molybdenum nitride@nickel cobalt molybdenum layered double hydroxide heterostructure with enhanced hydroxyl ion adsorption ability for supercapacitors","authors":"Liu Wan, Cheng Du, Mingjiang Xie, Jian Chen, Yan Zhang","doi":"10.1016/j.jcis.2026.139937","DOIUrl":"10.1016/j.jcis.2026.139937","url":null,"abstract":"<div><div>The construction of well-defined heterointerfaces represents an efficient strategy for boosting supercapacitor electrode performance. Herein, we fabricated an advanced nickel molybdenum nitride (Ni<sub>0.2</sub>Mo<sub>0.8</sub>N)@nickel cobalt molybdenum-layered double hydroxide (NiCoMo-LDH) heterostructure by electrodeposition of NiCoMo-LDH on a porous Ni<sub>0.2</sub>Mo<sub>0.8</sub>N backbone. This heterostructure design integrates Ni<sub>0.2</sub>Mo<sub>0.8</sub>N and NiCoMo-LDH into an interconnected three-dimensional (3D) nanosheet network, which enhances redox activity, facilitates rapid ion transport, and ensures structural integrity. Density functional theory (DFT) analyses substantiate that the heterointerface engineering between Ni<sub>0.2</sub>Mo<sub>0.8</sub>N and NiCoMo-LDH induces charge redistribution at the heterointerfaces, improves charge carrier mobility, and enhances hydroxyl ion adsorption capability. The Ni<sub>0.2</sub>Mo<sub>0.8</sub>N@NiCoMo-LDH heterostructure electrode delivers a specific capacity of 1054.4C g<sup>−1</sup> / 2425.2 mC cm<sup>−2</sup> at 1 A g<sup>−1</sup> while maintaining 95.7% capacity retention after 5000 cycles, outperforming the pristine Ni<sub>0.2</sub>Mo<sub>0.8</sub>N and NiCoMo-LDH in both capacity and durability. Furthermore, the hybrid supercapacitor (HSC) device based on the Ni<sub>0.2</sub>Mo<sub>0.8</sub>N@NiCoMo-LDH cathode achieves an energy density of 82.6 Wh kg<sup>−1</sup> at 794.4 W kg<sup>−1</sup>, coupled with robust long-term cycling performance (96.0% capacity maintenance over 20,000 cycles). These results validate the effectiveness of rational heterostructure design with complementary constituents for next-generation energy storage applications.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"709 ","pages":"Article 139937"},"PeriodicalIF":9.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146027846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Traditional flexible conductive hydrogels use water as the dispersion medium, making them prone to freezing and cracking in low-temperature environments, rendering them unusable. Therefore, developing flexible materials that combine freeze resistance with high electrical conductivity to meet the demands of signal monitoring and energy storage in severe cold conditions is crucial for expanding the application boundaries of flexible wearable devices. This paper reports an effective strategy for preparing a flexible, freeze-resistant, and highly conductive polyzwitterionic eutectogel based on renewable nanocellulose. This strategy utilizes a three-dimensional cellulose network constructed via ionic crosslinking as the functional filler framework. Sulfonated betaine zwitterionic DMAPS ([2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide) is then in situ polymerized within this network to produce a dual-network composite eutectogel featuring both physical and chemical crosslinking interactions. The uniformly coexisting cellulose-Al3+ network and polyzwitterionic network provide the structural foundation for energy dissipation and ion migration. Consequently, eutectogels exhibits excellent tensile properties and high electrical conductivity (0.25–0.71 S·m−1). The incorporation of deep eutectic solvents (DES) endows gels with exceptional antifreeze properties, maintaining excellent stability and outstanding ionic conductivity (0.24–0.65 S·m−1) even under extreme conditions at −20 °C—virtually unchanged from its performance at room temperature (25 °C). Notably, the strain sensor based on eutectogels exhibits outstanding sensitivity performance both in low-temperature and ambient environments (GF = 2.70 at −20 °C and GF = 2.54 at 25 °C). This is attributed to the gel's ability to maintain its mechanical and electrical properties at low temperatures, demonstrating its potential for application under harsh conditions. Additionally, eutectogels have been successfully applied in pressure sensors and supercapacitors to monitor pressure signals and store energy. Overall, this study has developed a promising strategy for preparing functional, freeze-resistant green composite sensors for engineering applications.
{"title":"An antifreeze polyzwitterionic eutectogel with high conductivity and sensitivity at arctic-like conditions for multifunctional sensors and supercapacitors","authors":"Hongping Li, Zehong Jin, Meilin Zhang, Lihua Fu, Baofeng Lin, Chuanhui Xu, Bai Huang","doi":"10.1016/j.jcis.2026.139942","DOIUrl":"10.1016/j.jcis.2026.139942","url":null,"abstract":"<div><div>Traditional flexible conductive hydrogels use water as the dispersion medium, making them prone to freezing and cracking in low-temperature environments, rendering them unusable. Therefore, developing flexible materials that combine freeze resistance with high electrical conductivity to meet the demands of signal monitoring and energy storage in severe cold conditions is crucial for expanding the application boundaries of flexible wearable devices. This paper reports an effective strategy for preparing a flexible, freeze-resistant, and highly conductive polyzwitterionic eutectogel based on renewable nanocellulose. This strategy utilizes a three-dimensional cellulose network constructed via ionic crosslinking as the functional filler framework. Sulfonated betaine zwitterionic DMAPS ([2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide) is then in situ polymerized within this network to produce a dual-network composite eutectogel featuring both physical and chemical crosslinking interactions. The uniformly coexisting cellulose-Al<sup>3+</sup> network and polyzwitterionic network provide the structural foundation for energy dissipation and ion migration. Consequently, eutectogels exhibits excellent tensile properties and high electrical conductivity (0.25–0.71 S·m<sup>−1</sup>). The incorporation of deep eutectic solvents (DES) endows gels with exceptional antifreeze properties, maintaining excellent stability and outstanding ionic conductivity (0.24–0.65 S·m<sup>−1</sup>) even under extreme conditions at −20 °C—virtually unchanged from its performance at room temperature (25 °C). Notably, the strain sensor based on eutectogels exhibits outstanding sensitivity performance both in low-temperature and ambient environments (GF = 2.70 at −20 °C and GF = 2.54 at 25 °C). This is attributed to the gel's ability to maintain its mechanical and electrical properties at low temperatures, demonstrating its potential for application under harsh conditions. Additionally, eutectogels have been successfully applied in pressure sensors and supercapacitors to monitor pressure signals and store energy. Overall, this study has developed a promising strategy for preparing functional, freeze-resistant green composite sensors for engineering applications.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"709 ","pages":"Article 139942"},"PeriodicalIF":9.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146028116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Constructing inorganic-organic hybrid S-scheme heterojunction has emerged as a pivotal strategy for achieving high photocatalytic activity, yet their practical implementation is hindered by intrinsic limitations of charge recombination, lattice mismatch and low interfacial charge transfer efficiency in conventional systems. Herein, we present a zinc oxide/polydopamine (ZnO/PDA) S-scheme heterojunction engineered through in-situ polycondensation, leveraging strong electronic coupling between Zn2+ vacant d-orbitals and PDA's conjugated π-system. This S-scheme electron migration pathway creates an efficient interfacial charge-transfer channels and suppresses photocarrier recombination, even more endowing the heterojunction with stronger oxidation-reduction ability. Meanwhile, PDA's porous architecture and amine-functionalized surface synergistically enhance CO₂ trapping and adsorption, achieving 17-fold increase in CO₂ adsorption capacity for optimized ZP10 composite versus pristine ZnO. Correspondingly, this composite demonstrates dramatically improved photocatalytic performance, yielding CO and CH₄ at rates of 133 and 71 μmol h−1 g−1 respectively, representing enhancements of 19-fold and 6-fold compared to pristine ZnO. Combined experimental and theoretical analyses reveal a stepwise CO₂ reduction mechanism that the conversion of CO₂ to CO and CH₄ on the ZnO/PDA surface undergoes a intermediate state evolution process of CO2 → CO2− → ⁎COOH→⁎CO → CO and CO2 → CO2− → ⁎COOH→⁎CHO → ⁎CH3O → ⁎CH3 → CH4. This work provides a generalizable framework for designing inorganic-organic hybrid S-scheme heterojunction that simultaneously optimize charge dynamics and reactant activation energetics in photocatalytic systems.
{"title":"Constructed zinc oxide/polydopamine S-scheme heterojunction via d-π electronic coupling for enhanced carbon dioxide photoreduction","authors":"Linyu Zhu , Yue Zhang , Nan Chen , Xinyi Chen , Xiaotao Wu , Xu Tian , Taotao Wang , Jiayuan Cao , Peisong Tang , Yanhua Tong , Pengfei Xia","doi":"10.1016/j.jcis.2026.139979","DOIUrl":"10.1016/j.jcis.2026.139979","url":null,"abstract":"<div><div>Constructing inorganic-organic hybrid S-scheme heterojunction has emerged as a pivotal strategy for achieving high photocatalytic activity, yet their practical implementation is hindered by intrinsic limitations of charge recombination, lattice mismatch and low interfacial charge transfer efficiency in conventional systems. Herein, we present a zinc oxide/polydopamine (ZnO/PDA) S-scheme heterojunction engineered through in-situ polycondensation, leveraging strong electronic coupling between Zn<sup>2+</sup> vacant d-orbitals and PDA's conjugated π-system. This S-scheme electron migration pathway creates an efficient interfacial charge-transfer channels and suppresses photocarrier recombination, even more endowing the heterojunction with stronger oxidation-reduction ability. Meanwhile, PDA's porous architecture and amine-functionalized surface synergistically enhance CO₂ trapping and adsorption, achieving 17-fold increase in CO₂ adsorption capacity for optimized ZP10 composite versus pristine ZnO. Correspondingly, this composite demonstrates dramatically improved photocatalytic performance, yielding CO and CH₄ at rates of 133 and 71 μmol h<sup>−1</sup> g<sup>−1</sup> respectively, representing enhancements of 19-fold and 6-fold compared to pristine ZnO. Combined experimental and theoretical analyses reveal a stepwise CO₂ reduction mechanism that the conversion of CO₂ to CO and CH₄ on the ZnO/PDA surface undergoes a intermediate state evolution process of CO<sub>2</sub> → CO<sub>2</sub><sup>−</sup> → <sup>⁎</sup>COOH→<sup>⁎</sup>CO → CO and CO<sub>2</sub> → CO<sub>2</sub><sup>−</sup> → <sup>⁎</sup>COOH→<sup>⁎</sup>CHO → <sup>⁎</sup>CH<sub>3</sub>O → <sup>⁎</sup>CH<sub>3</sub> → CH<sub>4</sub>. This work provides a generalizable framework for designing inorganic-organic hybrid S-scheme heterojunction that simultaneously optimize charge dynamics and reactant activation energetics in photocatalytic systems.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"709 ","pages":"Article 139979"},"PeriodicalIF":9.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146090489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-05-01Epub Date: 2026-01-20DOI: 10.1016/j.jcis.2026.139923
Tiancheng Geng , Huiping You , Fei Fang , Xiaojuan Wang , Jing Zhang , Enlai Hu , Yining Zhang , Zhongwei Chen
The development of efficient and low-cost electrocatalysts for alkaline hydrogen evolution reaction (HER) is crucial for the sustainable hydrogen generation. However, the sluggish water dissociation kinetics limits the HER efficiency. Herein, molybdate ion (MoO42−) modified Co/Co(OH)2 nanosheet arrays (MCC NSAs) were constructed via a facile two-step method involving electrodeposition and subsequent impregnation. The modification of MoO42− species induce the electron transfer from MoO42− to Co/Co(OH)2, optimizing the adsorption behavior of reaction intermediates and accelerating the water dissociation process. As a result, MCC NSAs exhibit excellent alkaline HER performance. The overpotential is only 41 mV to achieve a current density of 10 mA cm−2, outperforming the pristine Co/Co(OH)2 NSAs, and even rivaling the Pt/C benchmark. The electrochemical studies, in-situ Raman, and density functional theory (DFT) calculations manifest that the remarkable activity originates from the increased electrochemically active surface area, accelerated water dissociation process, strengthened water adsorption, and optimized hydrogen adsorption free energy. Moreover, MCC NSAs exhibit outstanding durability for over 250 h at 200 mA cm−2.
开发高效、低成本的碱性析氢反应电催化剂是实现可持续制氢的关键。然而，缓慢的水解离动力学限制了HER的效率。本文通过电沉积和浸渍两步法构建了钼酸盐（MoO42−）修饰的Co/Co(OH)2纳米片阵列（MCC NSAs）。MoO42−的修饰诱导了电子从MoO42−向Co/Co(OH)2的转移，优化了反应中间体的吸附行为，加速了水的解离过程。结果表明，MCC NSAs具有良好的碱性HER性能。过电位仅为41 mV，电流密度为10 mA cm - 2，优于原始Co/Co(OH)2 NSAs，甚至可与Pt/C基准相媲美。电化学研究、原位拉曼和密度泛函理论（DFT）计算表明，显著的活性源于电化学活性表面积的增加、水解离过程的加速、水吸附的增强和氢吸附自由能的优化。此外，MCC nsa在200 mA cm - 2下表现出超过250小时的优异耐久性。
{"title":"Boosting alkaline hydrogen evolution of Co/Co(OH)2 nanosheet arrays with molybdate modification","authors":"Tiancheng Geng , Huiping You , Fei Fang , Xiaojuan Wang , Jing Zhang , Enlai Hu , Yining Zhang , Zhongwei Chen","doi":"10.1016/j.jcis.2026.139923","DOIUrl":"10.1016/j.jcis.2026.139923","url":null,"abstract":"<div><div>The development of efficient and low-cost electrocatalysts for alkaline hydrogen evolution reaction (HER) is crucial for the sustainable hydrogen generation. However, the sluggish water dissociation kinetics limits the HER efficiency. Herein, molybdate ion (MoO<sub>4</sub><sup>2−</sup>) modified Co/Co(OH)<sub>2</sub> nanosheet arrays (MCC NSAs) were constructed via a facile two-step method involving electrodeposition and subsequent impregnation. The modification of MoO<sub>4</sub><sup>2−</sup> species induce the electron transfer from MoO<sub>4</sub><sup>2<sup>−</sup></sup> to Co/Co(OH)<sub>2</sub>, optimizing the adsorption behavior of reaction intermediates and accelerating the water dissociation process. As a result, MCC NSAs exhibit excellent alkaline HER performance. The overpotential is only 41 mV to achieve a current density of 10 mA cm<sup>−2</sup>, outperforming the pristine Co/Co(OH)<sub>2</sub> NSAs, and even rivaling the Pt/C benchmark. The electrochemical studies, in-situ Raman, and density functional theory (DFT) calculations manifest that the remarkable activity originates from the increased electrochemically active surface area, accelerated water dissociation process, strengthened water adsorption, and optimized hydrogen adsorption free energy. Moreover, MCC NSAs exhibit outstanding durability for over 250 h at 200 mA cm<sup>−2</sup>.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"709 ","pages":"Article 139923"},"PeriodicalIF":9.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146090574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-05-01Epub Date: 2026-01-12DOI: 10.1016/j.jcis.2026.139891
Yucong Zhou , Jiaqi Pang , Bohao Zhang , Yingying Li , Yan Feng , Bin Zhang , Qing Wang , Rong Liu , Zhitao Shen , Fumin Li
Despite significant breakthroughs in power conversion efficiency (PCE) and operational stability of perovskite solar cells (PSCs), their development remains challenged by lead toxicity risk and high production costs. This study introduces a process-efficient dilution strategy using acetonitrile for the perovskite precursor solution, which reduces the precursor concentration from the conventional 1.4 M to an ultra-low 0.28 M. This approach establishes an eco-friendly and cost-effective processing method, substantially mitigating the risk of lead while lowering raw material consumption. Crucially, acetonitrile regulates nucleation kinetics to enable dense, high-quality perovskite films, yielding champion devices with a PCE of 25.40%. Stability assessments demonstrate exceptional robustness that unencapsulated devices retain 80% of initial PCE after 1224 h of storage in N2 atmosphere and 82% after 800 h of continuous operation at 30 ± 10% relative humidity. By concurrently resolving toxicity, cost, and performance optimization challenges through solvent engineering, this work provides a fundamental advance for sustainable development of perovskite photovoltaics.
{"title":"An ultra-low-consumption dilution strategy for high-performance inverted perovskite solar cells","authors":"Yucong Zhou , Jiaqi Pang , Bohao Zhang , Yingying Li , Yan Feng , Bin Zhang , Qing Wang , Rong Liu , Zhitao Shen , Fumin Li","doi":"10.1016/j.jcis.2026.139891","DOIUrl":"10.1016/j.jcis.2026.139891","url":null,"abstract":"<div><div>Despite significant breakthroughs in power conversion efficiency (PCE) and operational stability of perovskite solar cells (PSCs), their development remains challenged by lead toxicity risk and high production costs. This study introduces a process-efficient dilution strategy using acetonitrile for the perovskite precursor solution, which reduces the precursor concentration from the conventional 1.4 M to an ultra-low 0.28 M. This approach establishes an eco-friendly and cost-effective processing method, substantially mitigating the risk of lead while lowering raw material consumption. Crucially, acetonitrile regulates nucleation kinetics to enable dense, high-quality perovskite films, yielding champion devices with a PCE of 25.40%. Stability assessments demonstrate exceptional robustness that unencapsulated devices retain 80% of initial PCE after 1224 h of storage in N<sub>2</sub> atmosphere and 82% after 800 h of continuous operation at 30 ± 10% relative humidity. By concurrently resolving toxicity, cost, and performance optimization challenges through solvent engineering, this work provides a fundamental advance for sustainable development of perovskite photovoltaics.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"709 ","pages":"Article 139891"},"PeriodicalIF":9.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-05-01Epub Date: 2026-01-12DOI: 10.1016/j.jcis.2026.139879
Wenwu Mo , Xiaowei Zhu , Huanyu Li , Tao Chen , Lijuan Zhang
Sodium-metal batteries (SMBs), as low-cost, high-energy-density rechargeable systems, are promising alternatives to lithium-ion batteries for large-scale energy storage. However, their practical application is hindered by sodium dendrite overgrowth and volume expansion during cycling, which shorten battery lifespan and pose safety risks. Herein, we propose a facile physical rolling method to fabricate alloy anodes with abundant nucleation centers and superior electrochemical performance. Specifically, the Na15Sn4 alloy layer (Na15Sn4@Na) is constructed by repeatedly rolling Sn powder on Na metal surfaces, inducing in situ spontaneous alloying. The Na15Sn4@Na layer, positioned on the Na metal surface, generates high-kinetic nucleation sites that promote uniform Na+ deposition. DFT calculations confirm its high Na+ adsorption energy and surface energy, which enhance Na+ diffusion and regulate uniform Na plating/stripping. Electrochemical tests validate its efficacy: symmetric Na15Sn4@Na||Na15Sn4@Na cells exhibit a cycling lifespan exceeding 1070 h; full cells (Na15Sn4@Na||Na3V2(PO4)3, NVP) maintain 720 cycles at 2C with 80% capacity retention post-cycling. This study demonstrates that the simple, low-cost physical rolling method stabilizes Na metal anodes, providing a novel strategy for scalable SMB development.
{"title":"Physical rolling to construct sodium‑tin alloy interface to stabilize sodium metal anodes","authors":"Wenwu Mo , Xiaowei Zhu , Huanyu Li , Tao Chen , Lijuan Zhang","doi":"10.1016/j.jcis.2026.139879","DOIUrl":"10.1016/j.jcis.2026.139879","url":null,"abstract":"<div><div>Sodium-metal batteries (SMBs), as low-cost, high-energy-density rechargeable systems, are promising alternatives to lithium-ion batteries for large-scale energy storage. However, their practical application is hindered by sodium dendrite overgrowth and volume expansion during cycling, which shorten battery lifespan and pose safety risks. Herein, we propose a facile physical rolling method to fabricate alloy anodes with abundant nucleation centers and superior electrochemical performance. Specifically, the Na<sub>15</sub>Sn<sub>4</sub> alloy layer (Na<sub>15</sub>Sn<sub>4</sub>@Na) is constructed by repeatedly rolling Sn powder on Na metal surfaces, inducing in situ spontaneous alloying. The Na<sub>15</sub>Sn<sub>4</sub>@Na layer, positioned on the Na metal surface, generates high-kinetic nucleation sites that promote uniform Na<sup>+</sup> deposition. DFT calculations confirm its high Na<sup>+</sup> adsorption energy and surface energy, which enhance Na<sup>+</sup> diffusion and regulate uniform Na plating/stripping. Electrochemical tests validate its efficacy: symmetric Na<sub>15</sub>Sn<sub>4</sub>@Na||Na<sub>15</sub>Sn<sub>4</sub>@Na cells exhibit a cycling lifespan exceeding 1070 h; full cells (Na<sub>15</sub>Sn<sub>4</sub>@Na||Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub>, NVP) maintain 720 cycles at 2C with 80% capacity retention post-cycling. This study demonstrates that the simple, low-cost physical rolling method stabilizes Na metal anodes, providing a novel strategy for scalable SMB development.</div></div>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"709 ","pages":"Article 139879"},"PeriodicalIF":9.7,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145957768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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