Carbon nitride(g-C3N4)is an attractive photocatalyst but commonly suffers from high photogenerated electron-hole recombination rate,low specific surface area,and narrow visible-light response range.Herein,3D ordered macroporous(3DOM)g-C3N4/CdS was constructed by a feasible and inexpensive syn-thesis strategy of using template and light-assisted methods to solve the above problems.The formed heterostructure with suitable morphology,band structure,and extended light absorption range is bene-ficial to promoting photocatalytic H2 generation.3DOM g-C3N4/CdS exhibits a high H2 produce rate of 718.6 umol h-1 g-1,which is 73.3 times higher than that of g-C3N4 and 25.4 times higher than that of 3DOM g-C3N4.The 3DOM structure can effectively increase the path length of light of g-C3N4,improve the light energy conversion efficiency,and shorten the carrier transport distance.CdS enhances visible-light response and produces many surface sites.Constructing a stable and tight interface between 3DOM g-C3N4 and CdS can promote the migration of photogenerated electrons and holes and consequently the visible-light catalytic activity.This study offers an effective designing strategy for heterostructure photo-catalysts to achieve high activity and stable solar H2 production.

Xuewen Wang;Qiuchan Li;Qingzhuo Lin;Rongbin Zhang;Mingyue Ding

Key Laboratory of Jiangxi Province for Environment and Energy Catalysis,College of Chemistry,Nanchang University,Nanchang 330031,China;Key Laboratory of Accoutrement Technique in Fluid Machinery and Power Engineering,Wuhan University,Wuhan 430072,China

材料科学技术（英文版）

[1]Xuewen Wang;Qiuchan Li;Qingzhuo Lin;Rongbin Zhang;Mingyue Ding-.CdS-sensitized 3D ordered macroporous g-C3N4 for enhanced visible-light photocatalytic hydrogen generation)[J].材料科学技术（英文版）,2022(16):204-210

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