Cetyltrimethylammoniumbromide (CTAB)-assisted hydrothermal synthesis of ZnIn2S4 as an efficient visible-light-driven photocatalyst for hydrogen production
Cetyltrimethylammoniumbromide (CTAB)-assisted hydrothermal synthesis of ZnIn2S4 as an efficient visible-light-driven photocatalyst for hydrogen production
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DOI：
10.1016/j.ijhydene.2008.05.043
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发表时间：
2008-09-01
影响因子：
7.2
通讯作者：
Guo, Liejin
中科院分区：
文献类型：
--
作者：
Shen, Shaohua;Zhao, Liang;Guo, Liejin
采用十六烷基三甲基溴化铵（CTAB）辅助水热法制备了一系列ZnIn2S4光催化剂。采用x射线衍射（XRD）、紫外可见吸收光谱（UV-vis）和扫描电镜（FESEM）对产物进行了表征。详细讨论了热液时间和CTAB对ZnIn2S4产物的晶体结构、形貌和光学性能的影响。通过可见光照射下的水光催化制氢，评价了所制备样品的光催化活性。结果表明，ZnIn2S4产物的光催化活性随水热时间的延长而降低，随CTAB用量的增加而提高。采用CTAB （9.6 mmol）辅助水热法制备的ZnIn2S4光催化剂在420 nm处的最高量子产率为18.4%。在现有的光催化体系下，ZnIn2S4光催化剂的最佳Pt负载量约为1.0 wt%。(C) 2008年国际氢能协会。Elsevier Ltd.出版。版权所有。
A series of ZnIn2S4 photocatalysts was synthesized via a cetyltrimethylammoniumbromide (CTAB)-assisted hydrothermal method. These ZnIn2S4 products were characterized by X-ray diffraction (XRD), UV-visible absorption spectra (UV-vis) and scanning electron microscopy (FESEM). The effects of hydrothermal time and CTAB on the crystal structures, morphologies and optical properties of ZnIn2S4 products were discussed in detail. The photocatalytic activities of the as-prepared samples were evaluated by photocatalytic hydrogen production from water under visible-light irradiation. It was found that the photocatalytic activities of these ZnIn2S4 products decreased with the hydrothermal time prolonging while increased with the amount of CTAB increasing. The highest quantum yield at 420 nm of ZnIn2S4 photocatalyst, which was prepared through the CTAB (9.6 mmol)-assisted hydrothermal procedure for 1 h, was determined to be 18.4%. The optimum amount of Pt loaded for the ZnIn2S4 photocatalyst was about 1.0 wt%, under the present photocatalytic system. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.