一步水热法制备CdS/NiS复合光催化剂及其光解水制氢性能
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- 英文论文题名：Synthesis of CdS/NiS composites by one-pot hydrothermal method for high hydrogenevolutionfrom water under visible light
- 论文作者：周晓舟 ; 孙鹤 ; 张怀章 ; 涂伟霞
- 英文论文作者：Xiaozhou Zhou ; He Sun ; Huaizhang Zhang ; Weixia Tu ; State Key Laboratory of Organic-Inorganic Composites ; Beijing University of Chemical Technology
- 年：2016
- 作者机构：北京化工大学有机无机复合材料国家重点实验室;
- 论文关键词：光催化制氢 ; CdS/NiS纳米粒子 ; 水热法
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十七分会：光化学
- 语种：中文
- 分类号：TQ116.2;O643.36
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十七分会 ; 光化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：291k
- 原文格式：D
- 会议级别：全国
摘要
太阳能光解水制氢作为解决能源危机的一种潜在手段而受到广泛的研究。金属硫化物半导体以其合适的能带间隙成为高效光催化剂的理想选择[1,2]。本文以CTAB为结构助剂,硫脲为硫源,在碱性条件下通过一步水热法成功地合成了Cd S/Ni S纳米粒子。该纳米颗粒平均直径约为40 nm,在可见光(λ≥420 nm)照射下,以乳酸为牺牲剂的水溶液中表现出优异的光解水产氢活性。最优条件下获得的Cd S/Ni S纳米颗粒的产氢速率为24.37 mmol h~(-1) g~(-1),在420 nm的单色光下光量子效率达9.96%。
Hydrogen from water splitting over photocatalysts using solar energy has received much attention since hydrogen is a potential alternative to fossil fuel. Metal chalcogenides because of their appropriateband gap have elicited more and more studies. Here, we use CTAB as structure promoter and thiourea as sulfur source to synthesize Cd S/Ni S composites by one-pot hydrothermal method under alkaline conditions. The Cd S/Ni S nanoparticles have an average diameter of 40 nm and exhibit high photocatalytic activity for water splitting into H2 under visible light in the presence of lactic acid as sacrificial reagent. The optimized Cd S/Ni S composite shows a H2 evolution rate of 24.37 mmol h-1 g-1 and the corresponding apparent quantum efficiency(AQE)is 9.96% at 420 nm.
Hydrogen from water splitting over photocatalysts using solar energy has received much attention since hydrogen is a potential alternative to fossil fuel. Metal chalcogenides because of their appropriateband gap have elicited more and more studies. Here, we use CTAB as structure promoter and thiourea as sulfur source to synthesize Cd S/Ni S composites by one-pot hydrothermal method under alkaline conditions. The Cd S/Ni S nanoparticles have an average diameter of 40 nm and exhibit high photocatalytic activity for water splitting into H2 under visible light in the presence of lactic acid as sacrificial reagent. The optimized Cd S/Ni S composite shows a H2 evolution rate of 24.37 mmol h-1 g-1 and the corresponding apparent quantum efficiency(AQE)is 9.96% at 420 nm.
引文
[1]Zhao,S.;Huang,J.;Huo,Q.;Zhou,X.;Tu,W.J Mater Chem A.2016,4:193.
[2]Zong,X.;Wu,G.;Yan,H.;Ma,G.;Li,C.J.Phys.Chem.C.2010,114:1963.
[2]Zong,X.;Wu,G.;Yan,H.;Ma,G.;Li,C.J.Phys.Chem.C.2010,114:1963.