Pub Date : 2025-12-01DOI: 10.1016/j.nanoms.2024.07.003
Jie Zhang , Kongjun Zhu , Zhihan Kong , Dingwei Ji , Penghua Liang , Jing Wang , Kang Yan , Jinsong Liu
To accelerate the development of lithium-ion batteries (LIBs), researchers should urgently exploit next-generation electrodes with high specific capacity, long cycle stability, and excellent rate performance, such as TMOs, silicon-based materials, and alloys. Among all the modification measures, hierarchical micro-nano structure and yolk–shell structure are considered suitable and effective ways to improve the electrochemical performance of those novel materials. Herein, a facile glucose-assisted solvothermal method combined with heat treatment was implemented to synthesize hierarchical micro-nano yolk–shell V2O3. The special-structured material exhibited higher specific capacity, better structure stability, and faster electrochemical kinetics compared with nanosheet-structured and micro-nano-cluster-structured V2O3. When used as an anode for LIB, mnYS-V2O3 delivered high specific capacity of 650.1 mA h g−1 after over 500 cycles at a current density of 100 mA g−1, with a retention of 93.4 %. Moreover, the morphology evolution mechanism of micro-nano structure and yolk–shell structure was investigated in this work, which is beneficial to the design of other mnYS-structured TMOs.
为了加速锂离子电池（LIBs）的发展，研究人员迫切需要开发具有高比容量、长周期稳定性和优异倍率性能的下一代电极，如TMOs、硅基材料和合金。在这些改性措施中，分层微纳结构和蛋黄壳结构被认为是改善这些新型材料电化学性能的合适和有效的方法。本研究采用葡萄糖辅助溶剂热结合热处理的方法合成了层状微纳米蛋黄壳V2O3。与纳米片状和微纳米团簇结构的V2O3相比，该特殊结构材料具有更高的比容量、更好的结构稳定性和更快的电化学动力学。作为锂离子电池的阳极，mys - v2o3在100 mA g - 1的电流密度下，经过500次循环后，其比容量高达650.1 mA h g - 1，保留率为93.4%。此外，本文还研究了微纳结构和蛋黄壳结构的形态演化机制，为其他mys结构TMOs的设计提供了理论依据。
{"title":"Glucose-assisted solvothermal synthesis of hierarchical micro-nano yolk–shell V2O3 microspheres as an anode material for lithium-ion batteries","authors":"Jie Zhang , Kongjun Zhu , Zhihan Kong , Dingwei Ji , Penghua Liang , Jing Wang , Kang Yan , Jinsong Liu","doi":"10.1016/j.nanoms.2024.07.003","DOIUrl":"10.1016/j.nanoms.2024.07.003","url":null,"abstract":"<div><div>To accelerate the development of lithium-ion batteries (LIBs), researchers should urgently exploit next-generation electrodes with high specific capacity, long cycle stability, and excellent rate performance, such as TMOs, silicon-based materials, and alloys. Among all the modification measures, hierarchical micro-nano structure and yolk–shell structure are considered suitable and effective ways to improve the electrochemical performance of those novel materials. Herein, a facile glucose-assisted solvothermal method combined with heat treatment was implemented to synthesize hierarchical micro-nano yolk–shell V<sub>2</sub>O<sub>3</sub>. The special-structured material exhibited higher specific capacity, better structure stability, and faster electrochemical kinetics compared with nanosheet-structured and micro-nano-cluster-structured V<sub>2</sub>O<sub>3</sub>. When used as an anode for LIB, mnYS-V<sub>2</sub>O<sub>3</sub> delivered high specific capacity of 650.1 mA h g<sup>−1</sup> after over 500 cycles at a current density of 100 mA g<sup>−1</sup>, with a retention of 93.4 %. Moreover, the morphology evolution mechanism of micro-nano structure and yolk–shell structure was investigated in this work, which is beneficial to the design of other mnYS-structured TMOs.</div></div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"7 6","pages":"Pages 837-846"},"PeriodicalIF":17.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145651781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-01DOI: 10.1016/j.nanoms.2024.06.010
Augusto Q. Pedro , Leonor S. Castro , João A.P. Coutinho, Mara G. Freire
Despite relevant advances, the pharmaceutical industry continues to strive with the limited adaptability, moisture management, and discomfort caused by existing wound dressings. Adding to these challenges are the bioavailability and pharmacokinetics of common (bio)therapeutics, overall leading to unmet clinical demands, safety concerns, and poor patient compliance. Ionogels, a versatile class of materials comprising ionic liquids (ILs) confined in an organic or inorganic solid network, have been proposed to overcome these drawbacks. They have demonstrated the ability to enhance the antimicrobial and mechanical properties of the resulting materials while allowing remarkable improvements in drug solubility and their delivery to targeted sites. Nowadays, safety investigations and clinical trials are still required to fully leverage the potential of ionogels for human applications. However, the recent FDA approval of the New Drug Application MRX-5LBT®, a transdermal drug delivery system, opens promising perspectives toward the clinical translation of ionogels. This review focuses on recent advances achieved in the design of ionogels for pharmaceutical applications, viz. in topical formulations to promote wound healing with antimicrobial activity, and as platforms to improve drug pharmacokinetics (solubility and bioavailability), and their delivery at targeted specific sites with controlled release behaviour.
{"title":"Ionogels as advanced materials for overcoming challenges in wound healing and drug delivery","authors":"Augusto Q. Pedro , Leonor S. Castro , João A.P. Coutinho, Mara G. Freire","doi":"10.1016/j.nanoms.2024.06.010","DOIUrl":"10.1016/j.nanoms.2024.06.010","url":null,"abstract":"<div><div>Despite relevant advances, the pharmaceutical industry continues to strive with the limited adaptability, moisture management, and discomfort caused by existing wound dressings. Adding to these challenges are the bioavailability and pharmacokinetics of common (bio)therapeutics, overall leading to unmet clinical demands, safety concerns, and poor patient compliance. Ionogels, a versatile class of materials comprising ionic liquids (ILs) confined in an organic or inorganic solid network, have been proposed to overcome these drawbacks. They have demonstrated the ability to enhance the antimicrobial and mechanical properties of the resulting materials while allowing remarkable improvements in drug solubility and their delivery to targeted sites. Nowadays, safety investigations and clinical trials are still required to fully leverage the potential of ionogels for human applications. However, the recent FDA approval of the New Drug Application MRX-5LBT®, a transdermal drug delivery system, opens promising perspectives toward the clinical translation of ionogels. This review focuses on recent advances achieved in the design of ionogels for pharmaceutical applications, viz. in topical formulations to promote wound healing with antimicrobial activity, and as platforms to improve drug pharmacokinetics (solubility and bioavailability), and their delivery at targeted specific sites with controlled release behaviour.</div></div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"7 5","pages":"Pages 599-626"},"PeriodicalIF":17.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141694831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-01DOI: 10.1016/j.nanoms.2024.07.004
He Huang , Liudang Fang , Zhipei Tong , Gencheng Gong , Hui Yu , Olga Kulyasova , Ruslan Z. Valiev , Dandan Xia , Yufeng Zheng , Dong Bian
To date, nanostructuring through plastic deformation has rarely been reported in biodegradable zinc (Zn) based alloys that have great potential in load-bearing conditions. Here, typical high-strength Zn–Li-based alloys were subjected to SPD processes, including equal channel angular pressing (ECAP) and high-pressure torsion (HPT), to achieve nanostructured microstructures. The effects of SPD on the microstructures, mechanical properties, and corrosion behaviors were generally investigated. The two SPD routes resulted in totally different microstructures. ECAPed samples processed at 150 °C exhibited a complicated multilevel structure (nm to μm) with mixed Zn equiaxed grains and lamellar-like eutectoid regions (Zn + α-LiZn4), and HPTed ones (25 °C) possessed a fully dynamically recrystallized (DRXed) microstructure with an average grain size below 0.4 μm. The tensile strength of the SPD samples could reach 500 MPa. Meanwhile, HPTed samples exhibited extraordinary fracture elongations higher than 100 %, because of a different grain boundary sliding deformation mechanism. HPTed samples and ECAPed samples displayed different corrosion patterns, and the former exhibited a much higher corrosion rate in Hank's solution, possibly due to the accelerated corrosion at grain boundaries. In summary, SPD is an efficient way to refine the microstructure of biodegradable Zn-based alloys, possibly improving their performances and clinical applications.
{"title":"Nanostructuring of Zn–Li-based alloys through severe plastic deformation: Microstructure, mechanical properties, and corrosion behaviors","authors":"He Huang , Liudang Fang , Zhipei Tong , Gencheng Gong , Hui Yu , Olga Kulyasova , Ruslan Z. Valiev , Dandan Xia , Yufeng Zheng , Dong Bian","doi":"10.1016/j.nanoms.2024.07.004","DOIUrl":"10.1016/j.nanoms.2024.07.004","url":null,"abstract":"<div><div>To date, nanostructuring through plastic deformation has rarely been reported in biodegradable zinc (Zn) based alloys that have great potential in load-bearing conditions. Here, typical high-strength Zn–Li-based alloys were subjected to SPD processes, including equal channel angular pressing (ECAP) and high-pressure torsion (HPT), to achieve nanostructured microstructures. The effects of SPD on the microstructures, mechanical properties, and corrosion behaviors were generally investigated. The two SPD routes resulted in totally different microstructures. ECAPed samples processed at 150 °C exhibited a complicated multilevel structure (nm to μm) with mixed Zn equiaxed grains and lamellar-like eutectoid regions (Zn + α-LiZn<sub>4</sub>), and HPTed ones (25 °C) possessed a fully dynamically recrystallized (DRXed) microstructure with an average grain size below 0.4 μm. The tensile strength of the SPD samples could reach 500 MPa. Meanwhile, HPTed samples exhibited extraordinary fracture elongations higher than 100 %, because of a different grain boundary sliding deformation mechanism. HPTed samples and ECAPed samples displayed different corrosion patterns, and the former exhibited a much higher corrosion rate in Hank's solution, possibly due to the accelerated corrosion at grain boundaries. In summary, SPD is an efficient way to refine the microstructure of biodegradable Zn-based alloys, possibly improving their performances and clinical applications.</div></div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"7 5","pages":"Pages 697-710"},"PeriodicalIF":17.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141852956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-01DOI: 10.1016/j.nanoms.2024.06.004
Bahareh Farasati Far , Mohammad Reza Naimi-Jamal , Sepideh Ahmadi , Navid Rabiee
Cancer treatment often requires a multimodal approach, such as combining chemotherapy and gene therapy. However, challenges such as low therapeutic efficacy and off-target effects hinder the effectiveness of these treatments. In this study, the use of calcium-doped metal-organic frameworks Cu2(BDC)2(DABCO) as a nanocarrier platform for the co-delivery of doxorubicin (DOX) and plasmid CRISPR (pCRISPR) proposed to enhance anticancer efficiency. We demonstrated that Ca-doped MOF nanocarriers significantly improved the uptake of DOX and pCRISPR by in cancer cells. The co-delivery of DOX and pCRISPR with Ca-doped MOF nanocarriers resulted in a significant rise in cell death and decreased targeted gene expression.
{"title":"Advanced Ca-doped MOF nanocarriers for Co-delivery of Doxorubicin/pCRISPR","authors":"Bahareh Farasati Far , Mohammad Reza Naimi-Jamal , Sepideh Ahmadi , Navid Rabiee","doi":"10.1016/j.nanoms.2024.06.004","DOIUrl":"10.1016/j.nanoms.2024.06.004","url":null,"abstract":"<div><div>Cancer treatment often requires a multimodal approach, such as combining chemotherapy and gene therapy. However, challenges such as low therapeutic efficacy and off-target effects hinder the effectiveness of these treatments. In this study, the use of calcium-doped metal-organic frameworks Cu<sub>2</sub>(BDC)<sub>2</sub>(DABCO) as a nanocarrier platform for the co-delivery of doxorubicin (DOX) and plasmid CRISPR (pCRISPR) proposed to enhance anticancer efficiency. We demonstrated that Ca-doped MOF nanocarriers significantly improved the uptake of DOX and pCRISPR by in cancer cells. The co-delivery of DOX and pCRISPR with Ca-doped MOF nanocarriers resulted in a significant rise in cell death and decreased targeted gene expression.</div></div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"7 5","pages":"Pages 627-642"},"PeriodicalIF":17.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141695515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-01DOI: 10.1016/j.nanoms.2024.05.005
Shahid Ashraf , Osama Gohar , Muhammad Zubair Khan , Urooj Tariq , Jawad Ahmad , Ramsha Javed Awan , Kun Zheng , Junaid ur Rehman , Muhammad Ramzan Abdul Karim , Hafiz Ahmad Ishfaq , Zafar Said , Martin Motola , Ning Han , Muhammad Bilal Hanif
The electrochemical conversion of carbon dioxide into valuable products is pivotal for maintaining the global carbon cycle and mitigating global warming. This review explores the advancements in electrochemical CO2 conversion, particularly focusing on producing methanol, ethanol, and n-propanol using various catalysts such as metals, metal oxides, metal alloys, and metal organic frameworks. Additionally, it covers the photoelectrochemical (PEC) conversion of CO2 into alcohols. The primary objective is to identify efficient electrocatalysts for ethanol, methanol, and n-propanol production, prioritizing selectivity, stability, Faradaic efficiency (FE), and current density. Notable catalysts include PtxZn nanoalloys, which exhibit an FE of ∼81.4 % for methanol production, and trimetallic Pt/Pb/Zn nanoalloys, aimed at reducing Pt costs while enhancing catalyst stability and durability. Metal oxide catalysts like thin film Cu2O/CuO on nickel foam and Cu2O/ZnO achieve FE values of ∼38 % and ∼16.6 % for methanol production, respectively. Copper-based metal-organic frameworks, such as Cu@ Cu2O, demonstrate an FE of ∼45 % for methanol production. Similarly, Ag0.14/Cu0.86 and Cu–Zn alloys exhibit FEs of ∼63 % and ∼46.6 %, respectively, for ethanol production. Notably, n-propanol production via Pd–Cu alloy and graphene/ZnO/Cu2O yields FEs of ∼13.7 % and ∼23 %, respectively. Furthermore, the review discusses recent advancements in PEC reactor design, photoelectrodes, reaction mechanisms, and catalyst durability. By evaluating the efficiency of these devices in liquid fuel production, the review addresses challenges and prospects in CO2 conversion for obtaining various valuable products.
{"title":"Exploring the frontiers of electrochemical CO2 conversion: A comprehensive review","authors":"Shahid Ashraf , Osama Gohar , Muhammad Zubair Khan , Urooj Tariq , Jawad Ahmad , Ramsha Javed Awan , Kun Zheng , Junaid ur Rehman , Muhammad Ramzan Abdul Karim , Hafiz Ahmad Ishfaq , Zafar Said , Martin Motola , Ning Han , Muhammad Bilal Hanif","doi":"10.1016/j.nanoms.2024.05.005","DOIUrl":"10.1016/j.nanoms.2024.05.005","url":null,"abstract":"<div><div>The electrochemical conversion of carbon dioxide into valuable products is pivotal for maintaining the global carbon cycle and mitigating global warming. This review explores the advancements in electrochemical CO<sub>2</sub> conversion, particularly focusing on producing methanol, ethanol, and n-propanol using various catalysts such as metals, metal oxides, metal alloys, and metal organic frameworks. Additionally, it covers the photoelectrochemical (PEC) conversion of CO<sub>2</sub> into alcohols. The primary objective is to identify efficient electrocatalysts for ethanol, methanol, and n-propanol production, prioritizing selectivity, stability, Faradaic efficiency (FE), and current density. Notable catalysts include Pt<sub>x</sub>Zn nanoalloys, which exhibit an FE of ∼81.4 % for methanol production, and trimetallic Pt/Pb/Zn nanoalloys, aimed at reducing Pt costs while enhancing catalyst stability and durability. Metal oxide catalysts like thin film Cu<sub>2</sub>O/CuO on nickel foam and Cu<sub>2</sub>O/ZnO achieve FE values of ∼38 % and ∼16.6 % for methanol production, respectively. Copper-based metal-organic frameworks, such as Cu@ Cu<sub>2</sub>O, demonstrate an FE of ∼45 % for methanol production. Similarly, Ag<sub>0.14</sub>/Cu<sub>0.86</sub> and Cu–Zn alloys exhibit FEs of ∼63 % and ∼46.6 %, respectively, for ethanol production. Notably, n-propanol production via Pd–Cu alloy and graphene/ZnO/Cu<sub>2</sub>O yields FEs of ∼13.7 % and ∼23 %, respectively. Furthermore, the review discusses recent advancements in PEC reactor design, photoelectrodes, reaction mechanisms, and catalyst durability. By evaluating the efficiency of these devices in liquid fuel production, the review addresses challenges and prospects in CO<sub>2</sub> conversion for obtaining various valuable products.</div></div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"7 5","pages":"Pages 565-581"},"PeriodicalIF":17.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141846314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-01DOI: 10.1016/j.nanoms.2024.10.006
Runze Jin , Baosheng Xu , Donghui Guo , Baolu Shi , Yu Chen , Xinlei Jia , Lijie Qu
Over the past several decades, the integration of IONs into EP emerged as an effective method for enhancing its mechanical properties. Nevertheless, challenges remain, especially with u-IONs, where the interfacial strength with EP is suboptimal, resulting in aggregation within the EP matrix and a subsequent deterioration in the mechanical performance of u-ION/EP nanocomposites. In this comprehensive review, we explored advanced chemical modification techniques tailored for IONs incorporated into EP, providing a detailed examination of the mechanical characteristics of surface cm-ION/EP nanocomposites. This review investigates various chemical modification methods and their distinct impacts on the mechanical attributes of the resulting EP nanocomposites. Special emphasis is given to addressing the persistent challenges of inadequate interfacial strength and aggregation. Furthermore, this article examines prospective surface modification approaches for inorganic oxide nanoparticles, offering a visionary outlook on methods to improve the mechanical performance of EP in future.
{"title":"Advanced chemical modification technology of inorganic oxide nanoparticles in epoxy resin and mechanical properties of epoxy resin nanocomposites: A review","authors":"Runze Jin , Baosheng Xu , Donghui Guo , Baolu Shi , Yu Chen , Xinlei Jia , Lijie Qu","doi":"10.1016/j.nanoms.2024.10.006","DOIUrl":"10.1016/j.nanoms.2024.10.006","url":null,"abstract":"<div><div>Over the past several decades, the integration of IONs into EP emerged as an effective method for enhancing its mechanical properties. Nevertheless, challenges remain, especially with u-IONs, where the interfacial strength with EP is suboptimal, resulting in aggregation within the EP matrix and a subsequent deterioration in the mechanical performance of u-ION/EP nanocomposites. In this comprehensive review, we explored advanced chemical modification techniques tailored for IONs incorporated into EP, providing a detailed examination of the mechanical characteristics of surface cm-ION/EP nanocomposites. This review investigates various chemical modification methods and their distinct impacts on the mechanical attributes of the resulting EP nanocomposites. Special emphasis is given to addressing the persistent challenges of inadequate interfacial strength and aggregation. Furthermore, this article examines prospective surface modification approaches for inorganic oxide nanoparticles, offering a visionary outlook on methods to improve the mechanical performance of EP in future.</div></div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"7 5","pages":"Pages 643-664"},"PeriodicalIF":17.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145327368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-01DOI: 10.1016/j.nanoms.2024.05.004
Kunming Li , Xuepeng Ni , Dong Li , Jiaoli Hu , Yanjin Dang , Huifang Chen , Yonggen Lu , Anqi Ju
Obtaining large specific surface areas (SSA) for carbon xerogels poses a significant challenge due to the inevitable volume shrinkage of xerogel. Here, the Zn2+ coordination-catalyzed in-situ polymerization approach was proposed to fabricate xerogels with a low shrinkage of 13.03 % and a short preparation period of 24 h. In resorcinol-formaldehyde (RF) polymerization, ZnCl2 could accelerate the reaction kinetics through the coordination of the Zn2+ and hydroxyl groups. The gel network with adjustable RF particles (46.5 nm-1.89 μm) and narrow neck structures was constructed by changing ZnCl2 and ethanol contents, which could resist volume shrinkage during atmospheric drying without solvent exchange. The activated carbon xerogels (ACXs) with hierarchical structure were designed by one-step carbonization/activation due to the pore-forming of ZnCl2. The obtained ACXs showed a large SSA of 1689 m2/g, multi-dyes adsorption capacity (methylene blue, Congo red, methyl orange, and Sudan III were 625.90, 359.46, 320.69, and 453.92 mg/g, respectively), and reusability of 100 %. The maximum monolayer MB adsorption capacity was 630.28 mg/g. This work presents an efficient strategy to design porous nanomaterials with low shrinkage and large SSA, which illustrates promising applications in separation, adsorption, and photoelectric catalysis.
{"title":"Efficient construction of low shrinkage xerogels via coordination-catalyzed in-situ polymerization for activated carbon xerogels with multi-dyes adsorption","authors":"Kunming Li , Xuepeng Ni , Dong Li , Jiaoli Hu , Yanjin Dang , Huifang Chen , Yonggen Lu , Anqi Ju","doi":"10.1016/j.nanoms.2024.05.004","DOIUrl":"10.1016/j.nanoms.2024.05.004","url":null,"abstract":"<div><div>Obtaining large specific surface areas (SSA) for carbon xerogels poses a significant challenge due to the inevitable volume shrinkage of xerogel. Here, the Zn<sup>2+</sup> coordination-catalyzed <em>in-situ</em> polymerization approach was proposed to fabricate xerogels with a low shrinkage of 13.03 % and a short preparation period of 24 h. In resorcinol-formaldehyde (RF) polymerization, ZnCl<sub>2</sub> could accelerate the reaction kinetics through the coordination of the Zn<sup>2+</sup> and hydroxyl groups. The gel network with adjustable RF particles (46.5 nm-1.89 μm) and narrow neck structures was constructed by changing ZnCl<sub>2</sub> and ethanol contents, which could resist volume shrinkage during atmospheric drying without solvent exchange. The activated carbon xerogels (ACXs) with hierarchical structure were designed by one-step carbonization/activation due to the pore-forming of ZnCl<sub>2</sub>. The obtained ACXs showed a large SSA of 1689 m<sup>2</sup>/g, multi-dyes adsorption capacity (methylene blue, Congo red, methyl orange, and Sudan III were 625.90, 359.46, 320.69, and 453.92 mg/g, respectively), and reusability of 100 %. The maximum monolayer MB adsorption capacity was 630.28 mg/g. This work presents an efficient strategy to design porous nanomaterials with low shrinkage and large SSA, which illustrates promising applications in separation, adsorption, and photoelectric catalysis.</div></div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"7 5","pages":"Pages 674-685"},"PeriodicalIF":17.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141701780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-01DOI: 10.1016/j.nanoms.2024.08.002
Daiyi Deng , Renju Cheng , Bin Jiang , Jianbo Li , Haijun Wang , Yongfeng Zhou , Chuntang Yu , Haie Zhu , Aitao Tang
This article reports a systematic investigation on the relationship between the microstructure evolution and mechanical properties of as-cast Mg-9.5Gd-2.3Y-1Zn-0.5Zr (VW92, wt.%) alloy during aging treatment. The results indicate that the alloy exhibits obvious double peak-aging characteristics at 180 °C, 200 °C, and 220 °C; the first peak-aging appeared at 96 h, 48 h, and 48 h, respectively, while the second peak-aging occurred at 204 h, 180 h, and 180 h, respectively. Moreover, the strengths of the first peak-aging were higher than those of the second peak-aging. Consequently, the first peak-aging at 200 °C achieved the best mechanical properties, with ultimate tensile strength (UTS), yield strength (YS), and elongation (EL) of 380 (±2.0) MPa, 255 (±1.8) MPa, and 12.8 (±1.7) %, respectively. While the strength decreased in the second peak-aging, the elongation increased to 17.2 (±0.5)%. The first peak-aging strengthening is ascribed to the participation of the nano-β′ phases in the matrix and the long period stacking ordered (LPSO) phases at grain boundaries (GBs). Additionally, the second peak-aging strengthening is associated with the emergence of a relatively new 3D structure comprising long-chain-like structural phases β' + β′F + β1, γ′ phases, and LPSO phases within the grain, combined with the fine and uniform LPSO phases at the GBs.
{"title":"Investigation on the microstructure evolution of high strength and ductility as-cast Mg-9.5Gd-2.3Y-1Zn-0.5Zr alloy via double peak-aging","authors":"Daiyi Deng , Renju Cheng , Bin Jiang , Jianbo Li , Haijun Wang , Yongfeng Zhou , Chuntang Yu , Haie Zhu , Aitao Tang","doi":"10.1016/j.nanoms.2024.08.002","DOIUrl":"10.1016/j.nanoms.2024.08.002","url":null,"abstract":"<div><div>This article reports a systematic investigation on the relationship between the microstructure evolution and mechanical properties of as-cast Mg-9.5Gd-2.3Y-1Zn-0.5Zr (VW92, wt.%) alloy during aging treatment. The results indicate that the alloy exhibits obvious double peak-aging characteristics at 180 °C, 200 °C, and 220 °C; the first peak-aging appeared at 96 h, 48 h, and 48 h, respectively, while the second peak-aging occurred at 204 h, 180 h, and 180 h, respectively. Moreover, the strengths of the first peak-aging were higher than those of the second peak-aging. Consequently, the first peak-aging at 200 °C achieved the best mechanical properties, with ultimate tensile strength (UTS), yield strength (YS), and elongation (EL) of 380 (±2.0) MPa, 255 (±1.8) MPa, and 12.8 (±1.7) %, respectively. While the strength decreased in the second peak-aging, the elongation increased to 17.2 (±0.5)%. The first peak-aging strengthening is ascribed to the participation of the nano-β′ phases in the matrix and the long period stacking ordered (LPSO) phases at grain boundaries (GBs). Additionally, the second peak-aging strengthening is associated with the emergence of a relatively new 3D structure comprising long-chain-like structural phases β' + β′<sub>F</sub> + β<sub>1</sub>, γ′ phases, and LPSO phases within the grain, combined with the fine and uniform LPSO phases at the GBs.</div></div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"7 5","pages":"Pages 686-696"},"PeriodicalIF":17.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145327367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-10-01DOI: 10.1016/j.nanoms.2024.06.003
Raquel Rey-Méndez , Noelia González-Ballesteros , María C. Rodríguez-Argüelles , Silvana Pinelli , Paola Mozzoni , Benedetta Ghezzi , Francesca Rossi , Filippo Fabbri , Giancarlo Salviati , Franca Bigi
Photodynamic therapy (PDT) has been established as one of the most promising novel cancer therapies with fewer side-effects and enhanced efficacy compared to the currently available conventional treatments. However, its application has been hindered by the limitations that photosensitizers (PS) have. The combination of PS with metallic nanoparticles like platinum nanoparticles (PtNPs), can help to overcome these intrinsic drawbacks. In this work, the combination of PtNPs and the natural photosensitizer riboflavin (RF) is proposed. PtNPs are synthesized using RF (Pt@RF) as reducing and stabilizing agent in a one-step method, obtaining nanoparticles with mesoporous structure for UV triggered PDT. In view of possible future UV irradiation treatments, the degradation products of RF, ribitol (RB) and lumichrome (LC), this last being a photosensitizing byproduct, are also employed for the synthesis of porous PtNPs, obtaining Pt@LC and Pt@RB. When administered in vitro to lung cancer cells, all the samples elicit a strong decrease of cell viability and a decrease of intracellular ATP levels. The antitumoral effect of both Pt@RF and Pt@LC is triggered by UV-A irradiation. This antitumoral activity is caused by the induction of oxidative stress, shown in our study by the decrease in intracellular glutathione and increased expression of antioxidant enzymes.
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Pub Date : 2025-10-01DOI: 10.1016/j.nanoms.2024.05.007
Xi Chen , Muhammad Ahmad , Iftikhar Hussain , Zhibo Zhang , Heyi Wang , Yang Lu , Qingmiao Hu , Ci Wang , Kaili Zhang
Metal-organic frameworks (MOFs) have been considered as great contender and promising electrode materials for supercapacitors. However, their low capacity, aggregation, and poor porosity have necessitated the exploration of new approaches to enhance the performance of these active materials. In this study, sphere-like MOF were in-situ grown and it subsequently burst, transformed into a desired metal oxide heterostructure comprising n-type ZnO and p-type NiO (ZnO/NiO-350). The resulting optimized flower-like structure, composed of interlaced nanoflakes derived from MOFs, greatly improved the active sites, porosity, and functionality of the electrode materials. The ZnO/NiO-350 electrode exhibited superior electrochemical activities for supercapacitors, compared to the parent MOF, bare n-type, and p-type counterparts. The specific capacitance can reach to 543 F g−1 at a current density of 1 A g−1. Theoretical modeling and simulations were employed to gain insights into the atomic-scale properties of the materials. Furthermore, an assembled hybrid device using active carbon and ZnO/NiO-350 as electrodes demonstrated excellent energy density of 44 Wh kg−1 at a power density of 1.6 Kw kg−1. After 5000 cycles at 10 A g−1, the cycling stability remained excellent 80 % of the initial capacitance. Overall, such evaluation of unique electrode with superior properties may be useful for the next generation supercapacitor electrode.
金属有机框架（MOFs）一直被认为是超级电容器的理想电极材料。然而，由于其容量低、易聚集、孔隙率低等问题，人们需要探索新的方法来提高这些活性材料的性能。在本研究中，原位生长了球状 MOF，随后将其爆裂并转化为由氧化锌和氧化镍组成的理想金属氧化物异质结构（ZnO/NiO-350）。由此产生的优化花状结构由来自 MOF 的交错纳米片组成，极大地改善了电极材料的活性位点、孔隙率和功能性。与母体 MOF、裸电极和对等电极相比，ZnO/NiO-350 电极在超级电容器中表现出更高的电化学活性。在电流密度为 1 A g 时，比电容可达 543 F g。理论建模和模拟有助于深入了解材料的原子尺度特性。此外，使用活性碳和 ZnO/NiO-350 作为电极的组装混合装置在功率密度为 1.6 Kw kg 时表现出 44 Wh kg 的出色能量密度。在 10 A g 条件下循环 5000 次后，其循环稳定性仍保持在初始电容的 80% 左右。总之，这种具有卓越性能的独特电极评估可能对下一代超级电容器电极有用。
{"title":"Bursting and transforming MOF into n-type ZnO and p-type NiO based heterostructure for supercapacitive energy storage","authors":"Xi Chen , Muhammad Ahmad , Iftikhar Hussain , Zhibo Zhang , Heyi Wang , Yang Lu , Qingmiao Hu , Ci Wang , Kaili Zhang","doi":"10.1016/j.nanoms.2024.05.007","DOIUrl":"10.1016/j.nanoms.2024.05.007","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs) have been considered as great contender and promising electrode materials for supercapacitors. However, their low capacity, aggregation, and poor porosity have necessitated the exploration of new approaches to enhance the performance of these active materials. In this study, sphere-like MOF were in-situ grown and it subsequently burst, transformed into a desired metal oxide heterostructure comprising <em>n-type</em> ZnO and <em>p-type</em> NiO (ZnO/NiO-350). The resulting optimized flower-like structure, composed of interlaced nanoflakes derived from MOFs, greatly improved the active sites, porosity, and functionality of the electrode materials. The ZnO/NiO-350 electrode exhibited superior electrochemical activities for supercapacitors, compared to the parent MOF, bare <em>n-type,</em> and <em>p-type</em> counterparts. The specific capacitance can reach to 543 F g<sup>−1</sup> at a current density of 1 A g<sup>−1</sup>. Theoretical modeling and simulations were employed to gain insights into the atomic-scale properties of the materials. Furthermore, an assembled hybrid device using active carbon and ZnO/NiO-350 as electrodes demonstrated excellent energy density of 44 Wh kg<sup>−1</sup> at a power density of 1.6 Kw kg<sup>−1</sup>. After 5000 cycles at 10 A g<sup>−1</sup>, the cycling stability remained excellent 80 % of the initial capacitance. Overall, such evaluation of unique electrode with superior properties may be useful for the next generation supercapacitor electrode.</div></div>","PeriodicalId":33573,"journal":{"name":"Nano Materials Science","volume":"7 5","pages":"Pages 711-718"},"PeriodicalIF":17.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141771761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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