文献类型：期刊文献

中文题名：Preparation of Y^(3+)-doped Bi-_(2)MoO_(6) nanosheets for improved visible-light photocatalytic activity: Increased specific surface area, oxygen vacancy formation and efficient carrier separation

作者：Hong Qiu[1,2];Shujing Liu[3];Xiaohui Ma[1];Yajie Li[1];Yueyan Fan[1];Wenjun Li[1];Hualei Zhou[1]

第一作者：Hong Qiu;邱红

机构：[1]Department of Chemistry and Chemical Engineering,School of Chemistry and Biological Engineering,University of Science and Technology Beijing,Beijing 100083,China;[2]College of Applied Science and Technology,Beijing Union University,Beijing 100012,China;[3]BGRIMM MTC Technology Co.,Ltd.,Beijing 102680,China

第一机构：Department of Chemistry and Chemical Engineering,School of Chemistry and Biological Engineering,University of Science and Technology Beijing,Beijing 100083,China

年份：2023

卷号：30

期号：9

起止页码：1824-1834

中文期刊名：矿物冶金与材料学报:英文版

外文期刊名：International Journal of Minerals,Metallurgy and Materials

收录：CSTPCD;;Scopus;CSCD:【CSCD2023_2024】；

基金：financially supported by the National Natural Science Foundation of China (No.21271022)。

语种：英文

中文关键词：photocatalysts;dye sensitization;bismuth molybdate;yttrium-doped

摘要：Although Bi_(2)Mo O_(6)(BMO) has recently received extensive attention, its visible-light photocatalytic activity remains poor due to its limited photoresponse range and low charge separation efficiency. In this work, a series of visible-light-driven Y^(3+)-doped BMO(Y-BMO) photocatalysts were synthesized via a hydrothermal method. Degradation experiments on Rhodamine B and Congo red organic pollutants revealed that the optimal degradation rates of Y-BMO were 4.3 and 5.3 times those of pure BMO, respectively. The degradation efficiency of Y-BMO did not significantly decrease after four cycle experiments. As a result of Y^(3+)doping, the crystal structure of BMO changed from a thick layer structure to a thin flower-like structure with an increased specific surface area. X-ray photoelectron spectroscopy showed the presence of highintensity peaks for the O 1s orbital at 531.01 and 530.06 eV, confirming the formation of oxygen vacancies in Y-BMO. Photoluminescence(PL) and electrochemical impedance spectroscopy measurements revealed that the PL intensity and interface resistances of composites decreased significantly, indicating reduced electron–hole pair recombination. This work provides an effective way to prepare high-efficiency Bibased photocatalysts by doping rare earth metal ions for improved photocatalytic performance.