Layer-controlled growth of MoS2 on self-assembled flower-like Bi2S3 for enhanced photocatalysis under visible light irradiation
Layer-controlled growth of MoS2 on self-assembled flower-like Bi2S3 for enhanced photocatalysis under visible light irradiation
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MoS2在自组装花状Bi2S3上的层控生长增强可见光照射下的光催化作用
DOI：
10.1038/am.2016.46
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发表时间：
2016-04
影响因子：
9.7
通讯作者：
Yu Han-Qing
中科院分区：
文献类型：
--
作者：
Long Lu-Lu;Chen Jie-Jie;Zhang Xing;Zhang Ai-Yong;Huang Yu-Xi;Rong Qing;Yu Han-Qing
金属硫化物半导体材料，如二硫化钼（MoS 2）和三硫化铋（Bi 2S 3），由于其在超导和其它许多领域的优异应用而引起人们的极大兴趣。然而，MoS 2/Bi 2S 3杂化纳米结构的可控合成仍然是一个挑战.在这项研究中，我们报告了一个独特的牺牲模板战略，制备层控二硫化钼三维（3D）的Bi 2S 3微花。该方法利用Bi 2S 3作为牺牲模板来调节离子交换，并通过调节钼的用量来调节动态形成，从而将Bi 2S 3微花上的MoS 2纳米片从单层转变为多层。这种三维花状杂化纳米结构使MoS 2/Bi 2S 3在可见光照射下表现出吸附促进的光催化性能，特别是对低浓度有机污染物，如偶氮染料和阿特拉津，具有优异的光催化降解性能。3D MoS 2/Bi 2S 3催化剂的优越性主要归因于传质增强、捕光能力强、电荷分离改善、氧活化势垒降低和活性氧产率提高。我们的研究结果是感兴趣的新型硫基光催化剂的发展，并提供了一个新的机会，有效地去除低浓度的难降解污染物。
Metal sulfide semiconductors, such as molybdenum disulfide (MoS 2) and bismuth trisulphide (Bi 2 S 3), are of considerable interest for their excellent applications in photocatalysis and in many other fields. However, the controllable synthesis of MoS 2/Bi 2 S 3 hybrid nanostructures remains a challenge. In this study, we report a unique sacrificial templating strategy for preparing layer-controlled MoS 2 on three-dimensional (3D) Bi 2 S 3 micro-flowers. For this approach, Bi 2 S 3 was utilized as a sacrificial template to regulate the ion exchange, and the dosage of molybdenum was adjusted to tune the dynamic formation, thus converting the MoS 2 nanosheets on the Bi 2 S 3 micro-flowers from monolayer to multilayer. Such a 3D flower-like hybrid nanostructure enables MoS 2/Bi 2 S 3 to exhibit adsorption-promoted photocatalysis under visible light irradiation, especially for the excellent photodegradation of low-concentration organic pollutants, for example, azo dye and atrazine. The observed superiority of the 3D MoS 2/Bi 2 S 3 was mainly attributed to the increased mass transfer, robust light-harvesting capacity, improved charge separation, lower oxygen-activation barrier and enhanced active oxygen yield. Our findings are of interest for the development of novel S-based photocatalysts and provide a new opportunity to efficiently remove low-concentration refractory pollutants.
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影响因子：
46.2
作者：
Xiaodong Zhang;Yi Xie
通讯作者：
Xiaodong Zhang;Yi Xie
影响因子：
17.1
作者：
Chang, Kun;Mei, Zongwei;Ye, Jinhua
通讯作者：
Ye, Jinhua
DOI：
10.1002/chin.201324188
发表时间：
2013-06
期刊：
ChemInform
影响因子：
--
作者：
S. Kershaw;A. Susha;A. Rogach
通讯作者：
S. Kershaw;A. Susha;A. Rogach
影响因子：
13.3
作者：
Zhou, Weijia;Yin, Zongyou;Zhang, Hua
通讯作者：
Zhang, Hua
影响因子：
15
作者：
Li, Yanguang;Wang, Hailiang;Dai, Hongjie
通讯作者：
Dai, Hongjie