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题名: L-Cystine-assisted hydrothermal synthesis of Mn1-xCdxS solid solutions with hexagonal wurtzite structure for efficient photocatalytic hydrogen evolution under visible light irradiation
作者: Liu, Meiying1;  Zhang, Liqing1;  He, Xiaoxu1;  Zhang, Bao2;  Song, Hongfei1;  Li, Sainan1;  You, Wansheng1
刊名: JOURNAL OF MATERIALS CHEMISTRY A
发表日期: 2014
DOI: 10.1039/c3ta15342h
卷: 2, 期:13, 页:4619-4626
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Energy & Fuels ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Energy & Fuels ;  Materials Science
英文摘要: A series of Mn1-xCdxS solid solutions with hexagonal wurtzite structure have been fabricated with the assistance of L-cystine as the S source and chelating reagent via a facile hydrothermal route at a lower temperature (130 degrees C). The as-synthesized products are characterized by XRD, TEM, HRTEM, EDS, XPS, ICP, FTIR, UV-vis and BET techniques, while the photocatalytic activities of the solid solutions for H-2 evolution from water decomposition are evaluated in the presence of Na2S-Na2SO3 as sacrificial reagents under visible light illumination. The photocatalytic H-2 evolution is found to be strongly dependent on the ratio of CdS to MnS as well as the band gap energies. Among all samples, the highest photocatalytic activity is observed on the Mn0.24Cd0.76S photocatalyst, with the rate of H-2-production of 10.9 mmol h(-1) g(-1), corresponding to an apparent quantum yield as high as 9.5% at 420 nm even in the absence of co-catalysts, which far exceeds that of CdS. Moreover, Mn0.24Cd0.76S solid solution also displays good stability and anti-photocorrosion capability during the photocatalytic reduction of water to hydrogen under visible light. The excellent photoactivity of Mn0.24Cd0.76S solid solution is mainly related to the band-gap structure as well as large specific surface area and high crystallinity. The proposed hydrothermal method using L-cystine as the S source provides a simple, cost-effective and environmentally friendly approach to fabricate other multi-component chalcogenide solid solutions.
关键词[WOS]: MN-CD-S ;  H-2 EVOLUTION ;  DRIVEN PHOTOCATALYST ;  SOLVOTHERMAL ROUTE ;  AQUEOUS-SOLUTIONS ;  FACILE SYNTHESIS ;  WATER ;  NANOCRYSTALS ;  SULFIDE ;  PHOTOLUMINESCENCE
语种: 英语
WOS记录号: WOS:000332460800019
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145703
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Liaoning Normal Univ, Fac Chem & Chem Engn, Inst Chem Functionalized Mat, Dalian 116029, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Liu, Meiying,Zhang, Liqing,He, Xiaoxu,et al. L-Cystine-assisted hydrothermal synthesis of Mn1-xCdxS solid solutions with hexagonal wurtzite structure for efficient photocatalytic hydrogen evolution under visible light irradiation[J]. JOURNAL OF MATERIALS CHEMISTRY A,2014,2(13):4619-4626.
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