文献类型：期刊文献

英文题名：Enhancing Carbon Cloth Substrates for Water Splitting Catalysts via Nitric Acid Oxidation Pretreatment

作者：Jiang, Yuanye Wang, Hui Cui, Mengqi Gunasekaran, Sundaram Ma, Xianguo

第一作者：Jiang, Yuanye

通信作者：Gunasekaran, S[1];Wang, H[2];Ma, XG[3]

机构：[1]Univ Wisconsin Madison, Dept Biol Syst Engn, Madison, WI 53706 USA;[2]Qingdao Univ Sci & Technol, Coll Chem Engn, State Key Lab Base Ecochem Engn, Qingdao, Peoples R China;[3]Guizhou Inst Technol, Sch Chem Engn, Guiyang, Peoples R China

第一机构：Univ Wisconsin Madison, Dept Biol Syst Engn, Madison, WI 53706 USA

通信机构：corresponding author), Univ Wisconsin Madison, Dept Biol Syst Engn, Madison, WI 53706 USA;corresponding author), Qingdao Univ Sci & Technol, Coll Chem Engn, State Key Lab Base Ecochem Engn, Qingdao, Peoples R China;corresponding author), Guizhou Inst Technol, Sch Chem Engn, Guiyang, Peoples R China.|贵州理工学院化学工程学院;贵州理工学院;

年份：2026

卷号：7

期号：2

外文期刊名：NANO SELECT

收录：WOS:【ESCI(收录号:WOS:001704522400023)】；

基金：The authors would like to thank the Natural Science Foundation of Shandong Province, China (ZR2020MB024), for its financial support of this work.

语种：英文

外文关键词：hydrophilicity; nitric acid pretreatment; surface etching and functionalization; well-supported hydrothermal deposition and growth

摘要：Carbon cloth is widely chosen as the substrate for electrical catalysts. However, its practical use is limited by its relatively low specific surface area and hydrophobicity, which hinder the deposition of active components and overall catalytic performance. In this study, nitric acid pretreatment was used to oxidize the carbon cloth, modify its surface morphology, enhance surface functionalization, and increase its charge-transfer capacity. After pretreatment, the surface area is significantly improved through etching and roughening, and hydrophilic and conductive groups are introduced and coordinated on the surface, facilitating the ion adsorption and charge transfer. These modifications enhance the electrochemical performance of the carbon cloth by increasing the electrochemical surface area (ECSA), lowering the energy barrier for the oxygen evolution reaction (OER), and reducing impedance, making it a better substrate for the OER catalyst. All these enhancements strongly support hydrothermal deposition and growth of active components, resulting in more uniform surface coverage and the formation of a 3D hierarchical structure. Additionally, by comparing the characterization and measurement results of carbon cloth pretreated at different nitric acid concentrations, the optimal nitric acid concentration for pretreating carbon cloth has been determined.