Synthesis of flower-like Ag/AgCl-Bi2MoO6 plasmonic photocatalysts with enhanced visible-light photocatalytic performance
Synthesis of flower-like Ag/AgCl-Bi2MoO6 plasmonic photocatalysts with enhanced visible-light photocatalytic performance
复制标题
具有增强可见光催化性能的花状Ag/AgCl-Bi2MoO6等离子体光催化剂的合成
DOI：
10.1016/j.apcatb.2015.03.042
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发表时间：
2015-10-01
影响因子：
22.1
通讯作者：
Liu, Weilong
中科院分区：
文献类型：
--
作者：
Li, Xiaoxuan;Fang, Siman;Liu, Weilong
采用简单温和的湿化学法合成了Ag/AgCl-Bi 2 MoO 6等离子体光催化剂。采用X射线衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、紫外-可见漫反射光谱（DRS）、电子自旋共振（ESR）、光致发光发射光谱（PL）和表面光电压谱（SPV）对Ag/AgCl-Bi 2 MoO 6样品进行了表征。通过X射线光电子能谱（XPS）研究了Ag/AgCl与Bi_2MoO_6之间的相互作用，发现这种相互作用有利于Ag/AgCl与Bi_2MoO_6之间的电子转移，从而提高了Ag/AgCl-Bi_2 MoO_6复合材料的光催化活性。光催化实验表明，Ag/AgCl物种能有效提高Bi 2 MoO 6光生载流子的分离效率，从而提高RhB的光催化降解活性。20wt%Ag/AgCl-Bi 2 MoO 6样品的光催化活性最高，光催化降解常数是纯Bi 2 MoO 6的4倍。提出了Ag/AgCl-Bi_2 MoO_6催化剂的可能催化机理，该机理可归因于Ag/AgCl物种的表面等离子体共振（SPR）效应。(C)2015 Elsevier B. V.版权所有。
A novel plasmonic photocatalysts of Ag/AgCl-Bi2MoO6 was successfully synthesized via a simple and mild wet-chemical process. The physical and photophysical properties of the as-prepared Ag/AgCl-Bi2MoO6 samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), Ultraviolet-visible diffuse reflection spectroscopy (DRS), electron spin resonance (ESR), photoluminescence emission spectra (PL) and surface photovoltage spectroscopy (SPV). The interaction between Ag/AgCl and Bi2MoO6 has been investigated by X-ray photoelectron spectroscopy (XPS) analysis, and which is facile to the electron transfer between Ag/AgCl and Bi2MoO6 and result in the enhancing photocatalytic activity of Ag/AgCl-Bi2MoO6 composite. The photocatalytic experiments indicate that the Ag/AgCl species can efficiently promote the separation efficiency of photogenerated charge carriers in Bi2MoO6, and consequently improve the RhB photodegradation activity. The 20 wt% Ag/AgCl-Bi2MoO6 sample shows the highest photocatalytic activity, the degradation constant of 20 wt% Ag/AgCl-Bi2MoO6 was as high as 4 times to that of pure Bi2MoO6. A possible catalytic mechanism for Ag/AgCl-Bi2MoO6 is proposed, which can be attributed to the surface plasmon resonance (SPR) effect from Ag/AgCl species. (C) 2015 Elsevier B.V. All rights reserved.