Organic electrodes featuring low cost, abundant sources, and designable structure hold a bright future in aqueous zinc ion batteries (AZIBs). Nevertheless, most organic electrodes still encounter drawbacks such as sluggish kinetics, low capacity, and poor cycling stability. Herein, an anthraquinone derivative (PAQD) is reported for AZIBs. The five-membered ring structure and multiple redox center of PAQD achieve a high active site density, offering a brilliant capacity of 308 mAh g−1 under 0.05 A g−1. Additionally, the establishment of anthraquinone units and N atoms not only expand π conjugated plane, but also improve conductivity, thus obtaining a superior rate capacity (100 mAh g−1 under 10 A g−1). Besides, the flexible molecular framework enables PAQD to obtain a superior cycling lifespan with 30,000 cycles under 10 A g−1 (with a 73 % capacity retention). The comprehensive in-situ and ex-situ characterizations and theoretical calculations prove that CO and CN groups are the redox active sites of PAQD cathode and reveal the mechanism of Zn2+/H+ co-storage. Impressively, PAQD electrodes exhibit decent specific capacity in high load mass, low-temperature environments, and flexible devices. This work demonstrates a method for designing small molecule organic electrodes with high redox density and expands the applications in the field of flexible AZIBs.
{"title":"N-heterocyclic compound with conjugated systems and multiple pyrazine and quinone redox active sites for high-performance aqueous zinc ion batteries","authors":"Lulu Huang, Jiahao Li, Xinyu Gao, Yongwen Wang, Haijiao Xie, Hanfeng Liang, Gang Wang, Tiantian Gu","doi":"10.1016/j.cej.2025.162993","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162993","url":null,"abstract":"Organic electrodes featuring low cost, abundant sources, and designable structure hold a bright future in aqueous zinc ion batteries (AZIBs). Nevertheless, most organic electrodes still encounter drawbacks such as sluggish kinetics, low capacity, and poor cycling stability. Herein, an anthraquinone derivative (PAQD) is reported for AZIBs. The five-membered ring structure and multiple redox center of PAQD achieve a high active site density, offering a brilliant capacity of 308 mAh g<sup>−1</sup> under 0.05 A g<sup>−1</sup>. Additionally, the establishment of anthraquinone units and N atoms not only expand π conjugated plane, but also improve conductivity, thus obtaining a superior rate capacity (100 mAh g<sup>−1</sup> under 10 A g<sup>−1</sup>). Besides, the flexible molecular framework enables PAQD to obtain a superior cycling lifespan with 30,000 cycles under 10 A g<sup>−1</sup> (with a 73 % capacity retention). The comprehensive <em>in-situ</em> and <em>ex-situ</em> characterizations and theoretical calculations prove that C<img alt=\"double bond\" src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/dbnd.gif\" style=\"vertical-align:middle\"/>O and C<img alt=\"double bond\" src=\"https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/55/entities/dbnd.gif\" style=\"vertical-align:middle\"/>N groups are the redox active sites of PAQD cathode and reveal the mechanism of Zn<sup>2+</sup>/H<sup>+</sup> co-storage. Impressively, PAQD electrodes exhibit decent specific capacity in high load mass, low-temperature environments, and flexible devices. This work demonstrates a method for designing small molecule organic electrodes with high redox density and expands the applications in the field of flexible AZIBs.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"13 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-23DOI: 10.1016/j.cej.2025.163010
Yue Zhang, Debo Zeng, Junjie He, Hailiang Sheng, Tao Zhou, Jintao Shi, Lisha Peng, Xinzao Wu, Bo-Ru Yang
The demand for color electrophoretic displays (EPDs) with high saturated color and response speed in outdoor applications is significant but challenging. To address this issue, we proposed a novel multi-particle color EPD strategy based on a mixture of dual-charged particles (DCP-based EPD). This strategy involves six specifically designed particles, allowing precise control of different particle movements, thereby optimizing the display performance. The resulting four-color EPD device addresses the high cost and complex fabrication challenges associated with traditional color EPDs. It provides vivid color performance, faster colored image transition (from several seconds to 60 ms) while maintaining a high ambient contrast ratio and simplifying the driving process. The DCP-based EPD strategy demonstrates significant potential for future color EPD applications, providing an economical and efficient solution for color display technology.
{"title":"High-performance multi-particle color electrophoretic display: A novel dual-charged particle strategy","authors":"Yue Zhang, Debo Zeng, Junjie He, Hailiang Sheng, Tao Zhou, Jintao Shi, Lisha Peng, Xinzao Wu, Bo-Ru Yang","doi":"10.1016/j.cej.2025.163010","DOIUrl":"https://doi.org/10.1016/j.cej.2025.163010","url":null,"abstract":"The demand for color electrophoretic displays (EPDs) with high saturated color and response speed in outdoor applications is significant but challenging. To address this issue, we proposed a novel multi-particle color EPD strategy based on a mixture of dual-charged particles (DCP-based EPD). This strategy involves six specifically designed particles, allowing precise control of different particle movements, thereby optimizing the display performance. The resulting four-color EPD device addresses the high cost and complex fabrication challenges associated with traditional color EPDs. It provides vivid color performance, faster colored image transition (from several seconds to 60 ms) while maintaining a high ambient contrast ratio and simplifying the driving process. The DCP-based EPD strategy demonstrates significant potential for future color EPD applications, providing an economical and efficient solution for color display technology.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"35 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-23DOI: 10.1016/j.cej.2025.163029
Rong Zhang, Xuejiao Shen, Deyuan Lou, Chaoshuai Dong, Qingyan Liu, Qian Liu, Qingting Liu, Xudong Fu, Shengfei Hu
Stretchable strain sensors need to maintain high stability, high working range and high sensitivity for the long-term and cycle application. Herein, this work prepared a flexible force-sensitive conductive composite with digitally crack by a programmed femtosecond laser. Firstly, carbon nanotube (CNTs) layer were partially embed into the surface maleic anhydride-grafted styrene ethylene butylene styrene (SEBS-g-MAH) by hot pressing to obtain a layered conductive material (mCSM); then the mCSM was stretched to a strain of 100 % strain and a programmed femtosecond laser was used to etch the surface CNTs layer to prepare digital like cracks; finally, the pre-strain was relaxed and cracks in the composites were partially recovered. These partially recovered digital cracks favored the high conductivity and sensitivity. Thus, the fabricated composites had a high sensitivity (GF = 938.62 at 100 % strain) and wide working range (661.72 %). It also has excellent stability (500 stable cycles at 100 % strain) and works stably even under large strains. The crack structure (pre-strain, length, and density) played an important role in the sensing properties of the composite, the synergistic effect of these three is the basis for constructing a controllable crack and the key to providing its excellent sensing properties. These excellent sensing properties enable the sensors to monitor the full range of human motion, from small blinks to large joint movements, and to maintain good sensing performance over long periods of operation.
{"title":"A high-performance flexible force sensitive conductive composite with programmed digital crack by femtosecond laser etching","authors":"Rong Zhang, Xuejiao Shen, Deyuan Lou, Chaoshuai Dong, Qingyan Liu, Qian Liu, Qingting Liu, Xudong Fu, Shengfei Hu","doi":"10.1016/j.cej.2025.163029","DOIUrl":"https://doi.org/10.1016/j.cej.2025.163029","url":null,"abstract":"Stretchable strain sensors need to maintain high stability, high working range and high sensitivity for the long-term and cycle application. Herein, this work prepared a flexible force-sensitive conductive composite with digitally crack by a programmed femtosecond laser. Firstly, carbon nanotube (CNTs) layer were partially embed into the surface maleic anhydride-grafted styrene ethylene butylene styrene (SEBS-g-MAH) by hot pressing to obtain a layered conductive material (mCSM); then the mCSM was stretched to a strain of 100 % strain and a programmed femtosecond laser was used to etch the surface CNTs layer to prepare digital like cracks; finally, the pre-strain was relaxed and cracks in the composites were partially recovered. These partially recovered digital cracks favored the high conductivity and sensitivity. Thus, the fabricated composites had a high sensitivity (GF = 938.62 at 100 % strain) and wide working range (661.72 %). It also has excellent stability (500 stable cycles at 100 % strain) and works stably even under large strains. The crack structure (pre-strain, length, and density) played an important role in the sensing properties of the composite, the synergistic effect of these three is the basis for constructing a controllable crack and the key to providing its excellent sensing properties. These excellent sensing properties enable the sensors to monitor the full range of human motion, from small blinks to large joint movements, and to maintain good sensing performance over long periods of operation.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"70 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Negatively charged materials designed to adhere to the inflammatory bowel disease (IBD) lesions via electrostatic interactions are considered as classical approach for IBD diagnosis and therapy. However, the strict acidic environment of the stomach represents a major obstacle faced by oral drug delivery. Besides, the high absorption efficiency of the normal gastrointestinal (GI) tract leads to the off-target uptake of drugs, increasing the risk of systemic exposure. Herein, we developed poly (acrylic acid) (PAA)-modified CeO2 nanoparticles (CeO2@PAA) loaded alginate hydrogels, namely, the Alg-CeO2@PAA, for cascade-targeted imaging and treatment of the IBD. The alginate hydrogels (Gel) could protect the CeO2@PAA from decomposition in the acidic environment in the stomach; the CeO2@PAA would be targeted delivered and gradually released in the intestine, and then adhered to the IBD lesions by electrostatic interactions, thus minimizing the systemic exposure of CeO2 NPs in the normal GI tract, resulting in a 3-4-fold reduction in Ce deposition in main organs. CeO2 NPs were capable of CT/X ray attenuation, free radicals scavenging, and immune system modulation, making them suitable for CT imaging and IBD treatment. Utilizing Alg-CeO2 @PAA, we achieved enhanced CT imaging contrast of IBD lesions and improved therapeutic efficacy, demonstrated by reduced oxidative stress and attenuated inflammatory responses, compared to alginate hydrogels loaded with cetyltrimethylammonium bromide-modified CeO2 (Alg-CeO2 @CTAB) or unmodified CeO2 (Alg-CeO2). Overall, this work poses a different perspective for IBD lesion-specific theranostics agent design and development.
{"title":"Rationally constructing the theranostics hydrogels for targeted CT imaging and healing of inflammatory bowel disease","authors":"Zongling Xiong, Cai Feng, Jingyi Tang, Xianting Sun, Yifei Yang, Hao Zhou, Tianming Wang, Xiaofen Wang, Shulin Liu, Peng Lei, Weihua Liao","doi":"10.1016/j.cej.2025.162986","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162986","url":null,"abstract":"Negatively charged materials designed to adhere to the inflammatory bowel disease (IBD) lesions <em>via</em> electrostatic interactions are considered as classical approach for IBD diagnosis and therapy. However, the strict acidic environment of the stomach represents a major obstacle faced by oral drug delivery. Besides, the high absorption efficiency of the normal gastrointestinal (GI) tract leads to the off-target uptake of drugs, increasing the risk of systemic exposure. Herein, we developed poly (acrylic acid) (PAA)-modified CeO<sub>2</sub> nanoparticles (CeO<sub>2</sub>@PAA) loaded alginate hydrogels, namely, the Alg-CeO<sub>2</sub>@PAA, for cascade-targeted imaging and treatment of the IBD. The alginate hydrogels (Gel) could protect the CeO<sub>2</sub>@PAA from decomposition in the acidic environment in the stomach; the CeO<sub>2</sub>@PAA would be targeted delivered and gradually released in the intestine, and then adhered to the IBD lesions by electrostatic interactions, thus minimizing the systemic exposure of CeO<sub>2</sub> NPs in the normal GI tract, resulting in a 3-4-fold reduction in Ce deposition in main organs. CeO<sub>2</sub> NPs were capable of CT/X ray attenuation, free radicals scavenging, and immune system modulation, making them suitable for CT imaging and IBD treatment. Utilizing Alg-CeO<sub>2</sub> @PAA, we achieved enhanced CT imaging contrast of IBD lesions and improved therapeutic efficacy, demonstrated by reduced oxidative stress and attenuated inflammatory responses, compared to alginate hydrogels loaded with cetyltrimethylammonium bromide-modified CeO<sub>2</sub> (Alg-CeO<sub>2</sub> @CTAB) or unmodified CeO<sub>2</sub> (Alg-CeO<sub>2</sub>). Overall, this work poses a different perspective for IBD lesion-specific theranostics agent design and development.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"6 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-23DOI: 10.1016/j.cej.2025.163004
Bo Shen, Qingqing Zhou, Qing Sun, Bonan Kang, S. Ravi P. Silva
Perovskite solar cells (PSC) are approaching their theoretical efficiency limit of 33.7 % by rapidly innovating in preparation techniques and device architectural design. Exploiting hot-press-assisted additive engineering strategy to construct semitransparent PSC can maximize the use of sunlight and improve power conversion efficiency (PCE). However, simultaneously passivating the perovskite defects and realizing high-performance semitransparent PSC remains a challenge. In this work, 2-(2,2,2-Trifluoroethoxy)aniline (2TFA) is incorporated into the perovskite precursor for achieving high-quality perovskite films. The introduction of –F and –NH2 groups within the aromatic ring is based on their crucial usage as key building units for optoelectronic materials to cement their intrinsic properties, such as defect passivation, architectural robustness, as well as to modulate the energy levels matching. The 2TFA modified PSC afford a champion PCE of 24.10 % and sustain 85 % of the initial PCE after storage in ambient air over 600 h. In addition, semitransparent perovskite solar cells (ST-PSC) are prepared using thermocompression technology. The 2TFA modified ST-PSC afford a champion PCE of 14.52 %, average visible light transmittance (AVT) of 5.18 %, and light utilization efficiency (LUE) of 0.75 %.
{"title":"Additive-assisted passivating by 2-(2,2,2-Trifluoroethoxy)aniline and semitransparent perovskite solar cells Fabricated by thermocompression","authors":"Bo Shen, Qingqing Zhou, Qing Sun, Bonan Kang, S. Ravi P. Silva","doi":"10.1016/j.cej.2025.163004","DOIUrl":"https://doi.org/10.1016/j.cej.2025.163004","url":null,"abstract":"Perovskite solar cells (PSC) are approaching their theoretical efficiency limit of 33.7 % by rapidly innovating in preparation techniques and device architectural design. Exploiting hot-press-assisted additive engineering strategy to construct semitransparent PSC can maximize the use of sunlight and improve power conversion efficiency (PCE). However, simultaneously passivating the perovskite defects and realizing high-performance semitransparent PSC remains a challenge. In this work, 2-(2,2,2-Trifluoroethoxy)aniline (2TFA) is incorporated into the perovskite precursor for achieving high-quality perovskite films. The introduction of –F and –NH<sub>2</sub> groups within the aromatic ring is based on their crucial usage as key building units for optoelectronic materials to cement their intrinsic properties, such as defect passivation, architectural robustness, as well as to modulate the energy levels matching. The 2TFA modified PSC afford a champion PCE of 24.10 % and sustain 85 % of the initial PCE after storage in ambient air over 600 h. In addition, semitransparent perovskite solar cells (ST-PSC) are prepared using thermocompression technology. The 2TFA modified ST-PSC afford a champion PCE of 14.52 %, average visible light transmittance (AVT) of 5.18 %, and light utilization efficiency (LUE) of 0.75 %.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"24 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The misuse of antibiotics exacerbates the problems of bacterial resistance, rendering antibiotic treatment ineffective and, in severe cases, posing life-threatening risks. Therefore, the development of novel antimicrobial materials and their clinical applications have garnered significant attention from healthcare professionals. Bimetallic nanozymes hold significant potential for treating clinical bacterial infections, owing to their superior antimicrobial activity and excellent biocompatibility. In this study, PdZn and PdCu bimetallic nanozymes with folded structures were synthesized using a one-step hydrothermal method. Their photothermal and peroxidase-like catalytic activities were compared, and the underlying causes of the variations in their catalytic performance were analyzed through computational studies. Additionally, the antimicrobial efficacy and wound-healing potential of these two nanozymes were evaluated. Experimental results demonstrated that PdCu exhibited superior catalytic performance compared to PdZn, which aligned with density functional theory calculations confirming its enhanced catalytic ability. In vitro antimicrobial experiments have successfully demonstrated that PdZn and PdCu can effectively inhibit the survival of Escherichia coli and Staphylococcus aureus down to less than 2 % by utilising the synergistic effect of photo-thermal catalysis at 980 nm near-infrared laser. Antibacterial experiments in vivo demonstrated that PdZn and PdCu nanozymes could promote wound healing and slow down the inflammatory response. PdCu exhibited a superior ability to promote wound healing compared with PdZn. PdCu + H2O2 + NIR and PdZn + H2O2 + NIR decreased the trauma area to 9.37 % and 6.04 % respectively, whereas the control group decreased it to only 41.21 %. Overall, this study further explores the potential of Pd-based nanozymes for biological applications and provides guidance for the synthesis of highly efficient Pd-based 2D nanobiomaterials.
{"title":"Bimetallic nanozymes with robust antibacterial effects for infected wound healing through diverse metal-precise regulation strategies","authors":"Ziyi Li, Xiaolong Zhu, Jiamu Xiao, Wei Lu, Donglin Gan, Jian Shen, Xuefeng Jiang, Mingqian Wang","doi":"10.1016/j.cej.2025.163016","DOIUrl":"https://doi.org/10.1016/j.cej.2025.163016","url":null,"abstract":"The misuse of antibiotics exacerbates the problems of bacterial resistance, rendering antibiotic treatment ineffective and, in severe cases, posing life-threatening risks. Therefore, the development of novel antimicrobial materials and their clinical applications have garnered significant attention from healthcare professionals. Bimetallic nanozymes hold significant potential for treating clinical bacterial infections, owing to their superior antimicrobial activity and excellent biocompatibility. In this study, PdZn and PdCu bimetallic nanozymes with folded structures were synthesized using a one-step hydrothermal method. Their photothermal and peroxidase-like catalytic activities were compared, and the underlying causes of the variations in their catalytic performance were analyzed through computational studies. Additionally, the antimicrobial efficacy and wound-healing potential of these two nanozymes were evaluated. Experimental results demonstrated that PdCu exhibited superior catalytic performance compared to PdZn, which aligned with density functional theory calculations confirming its enhanced catalytic ability. <em>In vitro</em> antimicrobial experiments have successfully demonstrated that PdZn and PdCu can effectively inhibit the survival of <em>Escherichia coli</em> and <em>Staphylococcus aureus</em> down to less than 2 % by utilising the synergistic effect of photo-thermal catalysis at 980 nm near-infrared laser. Antibacterial experiments <em>in vivo</em> demonstrated that PdZn and PdCu nanozymes could promote wound healing and slow down the inflammatory response. PdCu exhibited a superior ability to promote wound healing compared with PdZn. PdCu + H<sub>2</sub>O<sub>2</sub> + NIR and PdZn + H<sub>2</sub>O<sub>2</sub> + NIR decreased the trauma area to 9.37 % and 6.04 % respectively, whereas the control group decreased it to only 41.21 %. Overall, this study further explores the potential of Pd-based nanozymes for biological applications and provides guidance for the synthesis of highly efficient Pd-based 2D nanobiomaterials.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"71 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Despite the widespread use of lithium-ion batteries (LIBs), the constraints of limited lithium sources and safety concerns persist. Aqueous zinc-ion batteries (ZIBs) are a promising alternative, leveraging abundant resources, non-flammable electrolytes, high safety, and cost-effectiveness. However, challenges remain due to inadequate cathode materials. Layered vanadium oxide (LVO) holds promise but suffers from cyclic stability issues. Introducing conductive polymers into LVO interlayers can enhance structural integrity, prolong lifespan, and increase electronic conductivity simultaneously. Here, we focus on V10O24·nH2O (VOH) with a large interlayer spacing and utilize the supramolecular self-assembly of poly(3,4-ethylenedioxythiophene) (PEDOT) and VOH to obtain 2D VOH/PEDOT (PVOH) cathodes for ZIBs. Thanks to the reinforced layer structure and a conductive layer of hydrophobic PEDOT coating which reduces vanadium dissolution and promotes electronic conductivity, the optimized PVOH-M exhibits a high capacity of 452.14 mA h g−1 at 100 mA g−1 and a significant energy density of 316.08 Wh kg−1, along with 91.78 % capacity retention after 3000 cycles at 10 A g−1. Density Functional Theory (DFT) calculations further prove the unique three-step self-assembly model and explain the enhanced performances theoretically. This study demonstrates the efficacy of electrostatic supramolecular self-assembly as a strategy in modifying cathodes, offering insights into layered cathode design.
{"title":"Electrostatic supramolecular self-assembly of vanadium oxide and conductive polymer for highly efficient zinc ion storage","authors":"Yiran Zhu, Yida Wang, Tianchi Li, Kuo Cao, Yunyong Hu, Bicai Pan, Chunhua Chen","doi":"10.1016/j.cej.2025.163002","DOIUrl":"https://doi.org/10.1016/j.cej.2025.163002","url":null,"abstract":"Despite the widespread use of lithium-ion batteries (LIBs), the constraints of limited lithium sources and safety concerns persist. Aqueous zinc-ion batteries (ZIBs) are a promising alternative, leveraging abundant resources, non-flammable electrolytes, high safety, and cost-effectiveness. However, challenges remain due to inadequate cathode materials. Layered vanadium oxide (LVO) holds promise but suffers from cyclic stability issues. Introducing conductive polymers into LVO interlayers can enhance structural integrity, prolong lifespan, and increase electronic conductivity simultaneously. Here, we focus on V<sub>10</sub>O<sub>24</sub>·nH<sub>2</sub>O (VOH) with a large interlayer spacing and utilize the supramolecular self-assembly of poly(3,4-ethylenedioxythiophene) (PEDOT) and VOH to obtain 2D VOH/PEDOT (PVOH) cathodes for ZIBs. Thanks to the reinforced layer structure and a conductive layer of hydrophobic PEDOT coating which reduces vanadium dissolution and promotes electronic conductivity, the optimized PVOH-M exhibits a high capacity of 452.14 mA h g<sup>−1</sup> at 100 mA g<sup>−1</sup> and a significant energy density of 316.08 Wh kg<sup>−1</sup>, along with 91.78 % capacity retention after 3000 cycles at 10 A g<sup>−1</sup>. Density Functional Theory (DFT) calculations further prove the unique three-step self-assembly model and explain the enhanced performances theoretically. This study demonstrates the efficacy of electrostatic supramolecular self-assembly as a strategy in modifying cathodes, offering insights into layered cathode design.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"6 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Implementing differentiated photothermal temperatures in the infected area of the wound and adjacent normal tissue areas can achieve photothermal antibacterial effects while protecting adjacent healthy tissues from potential overheating damage associated with photothermal therapy. Here, a specific pH-induced photothermal temperature self-enhancing cellulose hydrogel was tailored using photothermal-responsive cellulose nanocrystals modified with polyaniline and pH-responsive cellulose nanocrystals loaded with taurine as the staggered network skeletons. The hydrogel possesses exceptional in-situ adaptability and tissue adhesion characteristics, enabling it to adhere to the irregular wound bed. Interestingly, polyaniline on cellulose nanocrystals can be converted from the form of adamantane base to the form of adamantane salt under acidic conditions, exhibiting enhanced photothermal effects. Consequently, the specific acidic microenvironment (pH 5.5–6.8) of infected wounds can elevate the photothermal temperature of hydrogel to 45–48 ℃, significantly higher than that (42 ℃) of adjacent healthy tissue with pH values of 6.8–7.4. Similarly, taurine grafted onto cellulose nanocrystals via dynamic imine bonding gets gradually released from the hydrogel into infected wounds under specific acidic conditions, thus providing an anti-inflammatory effect. This differential temperature regulation on the infected wound achieves effective photothermal antibacterial treatment while preventing overheating damage to normal tissue.
{"title":"Tailoring of a specific pH-induced self-enhanced photothermal cellulose hydrogel for antibiotic-resistant bacteria-infected wound treatment","authors":"Rimei Chen, Yonghui He, Lingli Tian, Yu Meng, Zhiping Chen, Nianfang Ma, Chunfang Wang, Hui He","doi":"10.1016/j.cej.2025.163025","DOIUrl":"https://doi.org/10.1016/j.cej.2025.163025","url":null,"abstract":"Implementing differentiated photothermal temperatures in the infected area of the wound and adjacent normal tissue areas can achieve photothermal antibacterial effects while protecting adjacent healthy tissues from potential overheating damage associated with photothermal therapy. Here, a specific pH-induced photothermal temperature self-enhancing cellulose hydrogel was tailored using photothermal-responsive cellulose nanocrystals modified with polyaniline and pH-responsive cellulose nanocrystals loaded with taurine as the staggered network skeletons. The hydrogel possesses exceptional <em>in-situ</em> adaptability and tissue adhesion characteristics, enabling it to adhere to the irregular wound bed. Interestingly, polyaniline on cellulose nanocrystals can be converted from the form of adamantane base to the form of adamantane salt under acidic conditions, exhibiting enhanced photothermal effects. Consequently, the specific acidic microenvironment (pH 5.5–6.8) of infected wounds can elevate the photothermal temperature of hydrogel to 45–48 ℃, significantly higher than that (42 ℃) of adjacent healthy tissue with pH values of 6.8–7.4. Similarly, taurine grafted onto cellulose nanocrystals via dynamic imine bonding gets gradually released from the hydrogel into infected wounds under specific acidic conditions, thus providing an anti-inflammatory effect. This differential temperature regulation on the infected wound achieves effective photothermal antibacterial treatment while preventing overheating damage to normal tissue.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"52 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-23DOI: 10.1016/j.cej.2025.163001
Yang Jiang, Wenhui Li, Houze Song, Renshuo Ding, Kun Luo
Layered O3-type transition metal oxide materials (NaxMO2) attract substantial attention because of their affordability and high safety. Na3[Ni2Sb]O6 is an O3-type layered oxide with honeycomb cation ordering in transition metal layers, which experiences the complicated phase transitions (O3-P3 and P3-O1) upon sodium ions de-insertion/re-insertion in the course of electrochemical reactions. Consequently, the material displays a staircase-like charge/discharge profiles with several voltage plateaus during the electrochemical process, leading to noticeable capacity decay and voltage drop with repeated cycling. The entropy-increase strategy via the replacement of multiple elements into the transition metal layers significantly improves the electrochemical behaviors of O3-type layered oxide cathode materials. The high-entropy O3-Na7/8[Ni0.44Cu0.06Li0.06Mg0.06Zn0.06Sb0.32]O2 (HEO) was obtained by a sol–gel method in this work. Structural characterizations indicate the O3-type HEO maintains the original honeycomb-type structure. In-situ structural tests show that the undesirable P3-O1 phase transition at higher potentials in O3-type layered oxides accompanied by large volume variation is successfully eliminated in our HEO, and the material undergoes an O3-O3/P3-P3 phase transition along with Na+ extraction and a reversible P3-P3/O3-O3 phase transition on Na+ re-insertion during the electrochemical process. Electrochemical measurements indicate the HEO displays smooth curves with no noticeable voltage plateaus and indicates a capacity of 112 mAh g−1 with significantly enhanced cycling capability. More importantly, the material can function appropriately within a broad temperature ranging from −35 °C to 55 °C, enabling this material appropriate for practical applications. This work introduces an encouraging strategy to modify and optimize the honeycomb-ordered layered cathode materials for sodium ion batteries.
{"title":"Entropy-assisted honeycomb-layered oxide without undesirable P3-O1 phase transition: A high-performance cathode for wide-temperature sodium-ion batteries","authors":"Yang Jiang, Wenhui Li, Houze Song, Renshuo Ding, Kun Luo","doi":"10.1016/j.cej.2025.163001","DOIUrl":"https://doi.org/10.1016/j.cej.2025.163001","url":null,"abstract":"Layered O3-type transition metal oxide materials (Na<sub>x</sub>MO<sub>2</sub>) attract substantial attention because of their affordability and high safety. Na<sub>3</sub>[Ni<sub>2</sub>Sb]O<sub>6</sub> is an O3-type layered oxide with honeycomb cation ordering in transition metal layers, which experiences the complicated phase transitions (O3-P3 and P3-O1) upon sodium ions de-insertion/re-insertion in the course of electrochemical reactions. Consequently, the material displays a staircase-like charge/discharge profiles with several voltage plateaus during the electrochemical process, leading to noticeable capacity decay and voltage drop with repeated cycling. The entropy-increase strategy via the replacement of multiple elements into the transition metal layers significantly improves the electrochemical behaviors of O3-type layered oxide cathode materials. The high-entropy O3-Na<sub>7/8</sub>[Ni<sub>0.44</sub>Cu<sub>0.06</sub>Li<sub>0.06</sub>Mg<sub>0.06</sub>Zn<sub>0.06</sub>Sb<sub>0.32</sub>]O<sub>2</sub> (HEO) was obtained by a sol–gel method in this work. Structural characterizations indicate the O3-type HEO maintains the original honeycomb-type structure. In-situ structural tests show that the undesirable P3-O1 phase transition at higher potentials in O3-type layered oxides accompanied by large volume variation is successfully eliminated in our HEO, and the material undergoes an O3-O3/P3-P3 phase transition along with Na<sup>+</sup> extraction and a reversible P3-P3/O3-O3 phase transition on Na<sup>+</sup> re-insertion during the electrochemical process. Electrochemical measurements indicate the HEO displays smooth curves with no noticeable voltage plateaus and indicates a capacity of 112 mAh g<sup>−1</sup> with significantly enhanced cycling capability. More importantly, the material can function appropriately within a broad temperature ranging from −35 °C to 55 °C, enabling this material appropriate for practical applications. This work introduces an encouraging strategy to modify and optimize the honeycomb-ordered layered cathode materials for sodium ion batteries.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"7 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study aims to characterize the mass transfer characteristics of a novel concentration-regulated metal-assisted chemical etching (MACE) system and investigate its application in the controllable fabrication of ∼ 600 nm diameter silicon (Si) nanohole arrays. A concentration-regulated MACE system for Si nanohole etching is established, and the CFD simulations of fluid flow, mass fraction evolution, and mass transfer are conducted. Results reveal that the mass fraction distributions from simulations and experiments are in good agreement. As the inlet velocity increases, the average velocity and vorticity significantly increase, the mass fraction approaches the target concentration more quickly, and the mass transfer coefficient increases by 1.51 to 6.72 times compared to conventional MACE. The concentration-regulated MACE system with a fine pore array demonstrates good concentration regulation performance due to its stable mass fraction evolution process, minimal standard deviation of mass fraction, and uniform mass transfer coefficient. Utilizing the concentration-regulated MACE system, the etching rate of Si nanoholes increases by approximately 27.78 % under mass transfer enhancement, and large-area, uniform, high aspect ratio, and controllable tortuous Si nanohole arrays are successfully fabricated for the first time.
{"title":"Mass transfer analysis of a concentration-regulated metal-assisted chemical etching system and its application in Si nanohole fabrication","authors":"Jiecai Long, Xuan Zhang, Haojun Zhang, Haoya Wang, Congkai Xie, Xun Chen, Guohuai Lin, Yun Chen, Xin Chen, Huitao Liu, Renquan Lu","doi":"10.1016/j.cej.2025.162997","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162997","url":null,"abstract":"This study aims to characterize the mass transfer characteristics of a novel concentration-regulated metal-assisted chemical etching (MACE) system and investigate its application in the controllable fabrication of ∼ 600 nm diameter silicon (Si) nanohole arrays. A concentration-regulated MACE system for Si nanohole etching is established, and the CFD simulations of fluid flow, mass fraction evolution, and mass transfer are conducted. Results reveal that the mass fraction distributions from simulations and experiments are in good agreement. As the inlet velocity increases, the average velocity and vorticity significantly increase, the mass fraction approaches the target concentration more quickly, and the mass transfer coefficient increases by 1.51 to 6.72 times compared to conventional MACE. The concentration-regulated MACE system with a fine pore array demonstrates good concentration regulation performance due to its stable mass fraction evolution process, minimal standard deviation of mass fraction, and uniform mass transfer coefficient. Utilizing the concentration-regulated MACE system, the etching rate of Si nanoholes increases by approximately 27.78 % under mass transfer enhancement, and large-area, uniform, high aspect ratio, and controllable tortuous Si nanohole arrays are successfully fabricated for the first time.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"70 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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