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Bandgap engineering of ternary sulfide nanocrystals by solution proton alloying for efficient photocatalytic H-2 evolution
Hu, Peng1,2; Ngaw, Chee Keong3; Yuan, Yupeng4; Bassi, Prince Saurabh1; Loo, Say Chye Joachim1; Tan, Timothy Thatt Yang3
2016-08-01
发表期刊NANO ENERGY
ISSN2211-2855
卷号26期号:AUG页码:577-585
摘要

Bandgap engineering is an important strategy for tailoring the optical and electronic properties of semiconductor nanocrystals. This work describes the first solution proton alloying process for tuning the bandgap energy of ternary sulfide nanocrystals at room temperature. The proposed strategy circumvents the use of toxic heavy metal ions, while maintaining the size and morphology of the nanocrystals, through a seamless tuning of the bandgap over a wide range. It was shown that proton alloying exhibited different effects on the bandgap energies of ternary sulfide nanocrystals and this could be explained by Density-Of-States (DOS) calculations. Using this approach, enhanced optoelectronic properties of ternary sulfide semiconductor nanocrystals were achieved and proton alloyed ZnIn2S4 showed eight times higher photocatalytic H-2 evolution rate than that of the untreated ones due to increased carrier density and decreased charge transfer resistance. (C) 2016 Elsevier Ltd. All rights reserved.

关键词Photocatalyst Ternary Sulfide Bandgap Engineering Proton Alloying Hydrogen Revolution
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1016/j.nanoen.2016.06.006
收录类别SCI
语种英语
关键词[WOS]CATION-EXCHANGE REACTIONS ; SENSITIZED SOLAR-CELLS ; HYDROGEN-PRODUCTION ; CADMIUM IONS ; ARRAYS ; NANOSTRUCTURES ; NANOPARTICLES ; PERFORMANCE ; PBSXSE1-X ; AMINE
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
项目资助者National Natural Science Foundation of China(11575228)
WOS记录号WOS:000384908700067
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21610
专题多相复杂系统国家重点实验室
作者单位1.Nanyang Technol Univ, Sch Mat Sci & Engn, Solar Fuels Lab, Singapore 637459, Singapore
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
3.Nanyang Technol Univ, Sch Chem & Biomed Engn, Solar Fuels Lab, Singapore 637459, Singapore
4.Anhui Univ, Sch Chem & Chem Engn, Hefei 230039, Anhui, Peoples R China
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GB/T 7714
Hu, Peng,Ngaw, Chee Keong,Yuan, Yupeng,et al. Bandgap engineering of ternary sulfide nanocrystals by solution proton alloying for efficient photocatalytic H-2 evolution[J]. NANO ENERGY,2016,26(AUG):577-585.
APA Hu, Peng,Ngaw, Chee Keong,Yuan, Yupeng,Bassi, Prince Saurabh,Loo, Say Chye Joachim,&Tan, Timothy Thatt Yang.(2016).Bandgap engineering of ternary sulfide nanocrystals by solution proton alloying for efficient photocatalytic H-2 evolution.NANO ENERGY,26(AUG),577-585.
MLA Hu, Peng,et al."Bandgap engineering of ternary sulfide nanocrystals by solution proton alloying for efficient photocatalytic H-2 evolution".NANO ENERGY 26.AUG(2016):577-585.
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