Thickness-regulated interfacial polarization in CTAB-tailored Bi_(2)WO_(6)for enhanced piezocatalysisOA
While morphology regulation in conventional catalysis mainly increases the specific surface area to expose more active sites,in piezocatalysis,it additionally alters the polarization properties of the materials.In this work,by leveraging the dual benefit of morphology regulation in piezocatalysis,we used cetyltrimethylammonium bromide(CTAB)to synthesize two-dimensional ultrathin Bi_(2)WO_(6)(BWO)nanosheets,whose minimal thickness of~2.26 nm results from the selective adsorption of CTAB inhibiting molecular layer stacking.This morphological control not only increased the specific surface area by more than doubling from 14.47 to 29.15 m^(2)·g^(−1) but also enhanced the interfacial polarization by 18.34 mV.Consequently,the effective piezoelectric coefficient of CTAB-modified BWO rose from~10.01 to~27.53 pm·V^(−1).The modified catalyst,by simultaneously increasing reactive sites and boosting piezoelectric performance,achieves a maximum per-unit-power hydrogen production rate of 61.20μmol·g^(-1)·h^(-1)·W^(-1),which is one of the highest values ever reported.This work demonstrates a synergistic strategy of morphology engineering to enhance the surface reactivity and piezoelectric response,offering a new paradigm for high-performance piezocatalysts.
Xiaoli Xu;Ying Wang;Wanwan Cheng;Huan Zhai;Jinqian Ma;Lingbo Xiao;Laishun Qin;Wenwen Liu;Yanmin Jia;Zhenhai Wen;Da Chen
College of Materials and Chemistry,China Jiliang University,Hangzhou 310018,China Key Laboratory of Jiangxi Province for Persistent Pollutants Control,National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization and Resources Recycle,Nanchang Hangkong University,Nanchang 330063,ChinaCollege of Materials and Chemistry,China Jiliang University,Hangzhou 310018,ChinaCollege of Materials and Chemistry,China Jiliang University,Hangzhou 310018,ChinaCollege of Materials and Chemistry,China Jiliang University,Hangzhou 310018,ChinaCollege of Materials and Chemistry,China Jiliang University,Hangzhou 310018,ChinaDepartment of Physics,Zhejiang University of Science and Technology,Hangzhou 310008,ChinaCollege of Materials and Chemistry,China Jiliang University,Hangzhou 310018,ChinaKey Laboratory of Lithium Battery New Energy Materials and Devices of Jiangxi Education Department,College of Intelligent Manufacturing and Materials&Chemical Engineering,Yichun University,Yichun 336000,ChinaSchool of Physics and Information Technology,Shaanxi Normal University,Xi''an 710121,ChinaKey Laboratory of Jiangxi Province for Persistent Pollutants Control,National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization and Resources Recycle,Nanchang Hangkong University,Nanchang 330063,China State Key Laboratory of Structural Chemistry,Fujian Provincial Key Laboratory of Materials and Techniques toward Hydrogen Energy,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,ChinaCollege of Materials and Chemistry,China Jiliang University,Hangzhou 310018,China
化学化工
thickness regulationinterfacial polarizationpiezoelectric coefficientpiezocatalytic hydrogen generation
《Journal of Advanced Ceramics》 2026 (3)
P.167-177,11
financially supported by the National Natural Science Foundation of China(Nos.22309170 and 22179108)the Natural Science Foundation of Zhejiang Province(Nos.LQ24E020003,LQN25E020017,and LD25B060001)the Open Fund Project of the National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization of Nanchang Hangkong University(No.ES202480182)the Fundamental Research Funds for the Provincial Universities of Zhejiang(Nos.2024YW14 and 2025QN065)。
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