Fabrication of Bi2MoO6 nanoplates hybridized with g-C3N4 nanosheets as highly efficient visible light responsive heterojunction photocatalysts for Rhodamine B degradation

Fabrication of Bi2MoO6 nanoplates hybridized with g-C3N4 nanosheets as highly efficient visible light responsive heterojunction photocatalysts for Rhodamine B degradation
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Bi2MoO6 纳米板与 g-C3N4 纳米片杂化的制备作为高效可见光响应异质结光催化剂用于罗丹明 B 降解

DOI:
10.1016/j.mssp.2015.02.072
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发表时间:
2015-07
影响因子:
4.1
通讯作者:
Liu Xiao-Heng
Liu Xiao-Heng
中科院分区:
工程技术3区
文献类型:
--
作者:
Chen Wei;Duan Guo-Rong;Liu Tian-Yu;Chen Shen-Ming;Liu Xiao-Heng

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采用简单的液相化学吸附和热处理方法成功制备了Bi 2 MoO 6/g-C3 N4异质结光催化剂。采用X射线衍射(XRD)、场发射扫描电子显微镜(FESEM)、透射电子显微镜(TEM)、X射线光电子能谱(XPS)、傅里叶变换红外光谱(FT-IR)、紫外-可见漫反射光谱(UV-vis DRS)和光致发光(PL)等手段对Bi 2 MoO 6/g-C3 N4复合材料进行了表征。结果表明:20wt%Bi2MoO6/g-C3 N4样品具有良好的可见光催化活性和光稳定性。20wt%Bi_2MoO_6/g-C_3 N_4催化剂降解RhB的动力学常数分别是纯Bi_2MoO_6和g-C_3 N_4纳米片催化剂的5倍和2.5倍。这种增强的光催化性能是由于异质界面的构建促进了光生载流子对的分离。
The Bi2MoO6/g-C3N4heterojunction photocatalysts have been successfully fabricated using a simple liquid chemisorptions and thermal post-treatment. These nanostructured Bi2MoO6/g-C3N4composites were extensively characterized by X-ray diffraction(XRD), field emission scanning electron microscopy (FESEM), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR),UV–vis diffuse reflectance spectra (UV–vis DRS) and Photoluminescence (PL). The photocatalytic results show that 20 wt% Bi2MoO6/g-C3N4sample exhibits efficient visible light activity and excellent photo-stability. The kinetic constant of RhB degradation over 20 wt% Bi2MoO6/g-C3N4is about 5 and 2.5 times higher than that over pure Bi2MoO6and g-C3N4nanosheets, respectively. The enhanced photocatalytic performance is attributed to the construction of heterogeneous interface to promote photo-induced charge carrier pairs separation.
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