Hydrothermal growth of two dimensional hierarchical MoS2 nanospheres on one dimensional CdS nanorods for high performance and stable visible photocatalytic H2 evolution
Hydrothermal growth of two dimensional hierarchical MoS2 nanospheres on one dimensional CdS nanorods for high performance and stable visible photocatalytic H2 evolution
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DOI：
10.1016/j.apsusc.2017.09.260
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发表时间：
2018-03-01
影响因子：
6.7
通讯作者：
Kang, Misook
中科院分区：
文献类型：
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作者：
Chava, Rama Krishna;Do, Jeong Yeon;Kang, Misook
可见光催化分解水制氢作为一种清洁的可再生能源，可以解决化石燃料的温室气体排放问题。尽管付出了巨大的努力，但开发具有成本效益、高效和更稳定的可见光催化剂用于分解水仍然是一个巨大的挑战。在这里，我们报告的heteronanostructures组成的分层MoS 2纳米球生长在一维CdS纳米棒称为CdS-MoS 2 HNS作为一个高性能的可见光催化剂H-2的演变。与纯CdS纳米棒相比，合成的CdS-MoS 2 HNS表现出类似于11倍的H-2释放速率增量。这种显著增强的析氢性能可以归因于CdS和MoS 2组分之间形成的异质纳米结构的积极协同效应，其有助于作为丰富的活性边缘位点的电子阱和源，并进而增加电荷分离。本研究提出了一种低成本的可见光催化剂，用于太阳能转换，以实现高效的H-2。(C)2017爱思唯尔B. V.保留所有权利。
The visible photocatalytic H-2 production from water splitting considered as a clean and renewable energy source could solve the problem of greenhouse gas emission from fossil fuels. Despite tremendous efforts, the development of cost effective, highly efficient and more stable visible photocatalysts for splitting of water remains a great challenge. Here, we report the heteronanostructures consisting of hierarchical MoS2 nanospheres grown on 1D CdS nanorods referred to as CdS-MoS2 HNSs as a high performance visible photocatalyst for H-2 evolution. The as-synthesized CdS-MoS2 HNSs exhibited similar to 11 fold increment of H-2 evolution rate when compared to pure CdS nanorods. This remarkable enhanced hydrogen evolution performance can be assigned to the positive synergetic effect from heteronanostructures formed between the CdS and MoS2 components which assist as an electron sink and source for abundant active edge sites and in turn increases the charge separation. This study presents a low-cost visible photocatalyst for solar energy conversion to achieve efficient H-2. (C) 2017 Elsevier B.V. All rights reserved.