Low-temperature preparation of AgIn5S8/TiO2 heterojunction nanocomposite   with efficient visible-light-driven hydrogen production

doi:10.1016/j.ijhydene.2013.09.147

CORC > 北京大学 > 化学与分子工程学院

	Low-temperature preparation of AgIn5S8/TiO2 heterojunction nanocomposite with efficient visible-light-driven hydrogen production
	Li, Kan ; Xu, Jinlei ; Zhang, Xiaohu ; Peng, Tianyou ; Li, Xingguo
刊名	国际氢能杂志
	2013
关键词	AgIn5S8 TiO2 Heterojunction Low-temperature preparation Photocatalytic H-2 evolution PHOTOCATALYTIC H-2 PRODUCTION AQUEOUS-SOLUTION QUANTUM DOTS THIN-FILMS TIO2 NANOPARTICLES IRRADIATION DEGRADATION EVOLUTION ELECTRODE
DOI	10.1016/j.ijhydene.2013.09.147
英文摘要	AgIn5S8 and AgIn5S8/TiO2 heterojunction nanocomposite with efficient photoactivity for H-2 production were prepared by a low-temperature water bath deposition process. The resultant AgIn5S8 shows an absorption edge at similar to 720 nm, corresponding to a bandgap of similar to 1.72 eV, and its visible-light-driven photoactivity (100.1 mu mol h(-1)) for H-2 evolution is 9 times higher than that (11 mu mol h(-1)) of the product derived from a hydrothermal process, while the obtained AgIn5S8/TiO2 heterojunction nanocomposites prepared by using commercially available TiO2 nanoparticles (P25) as TiO2 source exhibit remarkably improved photoactivity as compared to the pristine AgIn5S8, and the AgIn5S8/TiO2 nanocomposite with molar ratio of 1:10 shows a maximum photocatalytic H-2 evolution rate (371.1 mu mol h(-1)), which is 4.3 times higher than that (85 mu mol h(-1)) of the corresponding AgIn5S8/TiO2 nanocomposite derived from a hydrothermal method. This significant enhancement in the photocatativity of the present AgIn5S8/TiO2 nanocomposite can be ascribed to the better dispersion of the AgIn5S8 formed on TiO2 nanoparticle surfaces and the more intimate AgIn5S8/TiO2 heterojunction structure during the water bath deposition process under continuously stirring as compared to the corresponding nanocomposite derived from a hydrothermal method. This configuration of nanocomposite results in fast diffusion of the photogenerated carriers in AgIn5S8 towards TiO2, which is beneficial for separating spatially the photogenerated carriers and improving the photoactivity. The present findings shed light on the tuning strategy of spectral responsive region and photoactivity of photocatalysts for efficient light-to-energy conversion. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.; Chemistry, Physical; Electrochemistry; Energy & Fuels; SCI(E); 0; ARTICLE; 36; 15965-15975; 38
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/219324]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Li, Kan,Xu, Jinlei,Zhang, Xiaohu,et al. Low-temperature preparation of AgIn5S8/TiO2 heterojunction nanocomposite with efficient visible-light-driven hydrogen production[J]. 国际氢能杂志,2013.
APA	Li, Kan,Xu, Jinlei,Zhang, Xiaohu,Peng, Tianyou,&Li, Xingguo.(2013).Low-temperature preparation of AgIn5S8/TiO2 heterojunction nanocomposite with efficient visible-light-driven hydrogen production.国际氢能杂志.
MLA	Li, Kan,et al."Low-temperature preparation of AgIn5S8/TiO2 heterojunction nanocomposite with efficient visible-light-driven hydrogen production".国际氢能杂志 (2013).