A novel strategy for loading metal cocatalysts onto hollow nano-TiO_(2)inner surface with highly enhanced H_(2)production activity

作     者：Nan Chen Yu Zhou Songtao Cao Ruixin Wang Weizhou Jiao Nan Chen;Yu Zhou;Songtao Cao;Ruixin Wang;Weizhou Jiao

作者机构：School of Chemical Engineering and TechnologyNorth University of ChinaTaiyuanShanxi030051China 

出 版 物：《Green Energy & Environment》 (绿色能源与环境（英文版）)

年 卷 期：2023年第8卷第2期

页      面：509-518页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 081705[工学-工业催化] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 0703[理学-化学] 

基　　金：supported by the Natural Science Foundation of the Shanxi Province of China(No.201801D121069) Graduate Education Innovation Foundation of Province Shanxi of China(No.2020SY359)。 

主　　题：Ultrathin carbon layer Ultrafine Pt nanoparticles Loading Hollow photocatalyst Photocatalytic hydrogen production 

摘      要：The loading strategy of cocatalysts affects its activity exerting and atom utilization.Here,a novel strategy for loading precious metal(Pt)cocatalysts by means of ultrathin N-doped carbon layer is reported.The strategy is based on a pyrolysis process of predesigned N-containing polymers and Pt complexes on hard-template surface,during which Pt can be reduced by carbon from pyrolysis at high temperatures.Finally,the hollow TiO_(2)composite with stable and dispersed Pt on its inner surface was prepared.It shows an ultrahigh photocatalytic H_(2)production activity as high as 25.7 mmol h^(-1)g^(-1)with methanol as sacrificial regent,and displays an apparent quantum yield as 13.2%.The improved photocatalytic activity and stability can be attributed to the highly dispersed and ultrafine Pt nanoparticles,enhanced interaction between Pt-species and carbon support,fast photo-excited electron transport from the high graphitization degree of NC layers,ample oxygen vacancies/defects,as well as the manipulated local charge distribution of Pt/NC-layer configuration.Additionally,the universality of the proposed strategy was demonstrated by replacing metal sources(such as,Ru and Pd).This work presented a promising strategy for the design and development of novel photocatalysts,which shows a broad application prospect.