Study of photocatalytic activities of Bi2WO6 nanoparticles synthesized by fast microwave-assisted method
Study of photocatalytic activities of Bi2WO6 nanoparticles synthesized by fast microwave-assisted method
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DOI：
10.1016/j.jallcom.2015.06.047
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发表时间：
2015-10
影响因子：
6.2
通讯作者：
N. D. Phu;L. H. Hoàng;Xiang-Bai Chen;Meng-hong Kong;H. Wen;W. Chou
中科院分区：
文献类型：
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作者：
N. D. Phu;L. H. Hoàng;Xiang-Bai Chen;Meng-hong Kong;H. Wen;W. Chou
采用快速微波辅助法制备了Bi2WO6纳米粒子，并对其光催化活性进行了研究。在可见光照射下，以亚甲基蓝的脱色为指标，评价了纳米粒子的光催化活性。结果表明，Bi2WO6纳米粒子的比表面积对提高光催化活性起主要作用，而可见光吸收对光催化活性的影响很小.这表明光生电子和空穴能够有效地传输到纳米粒子表面的氧化活性位点，表明快速微波辅助法合成的Bi2WO6纳米粒子有望在可见光照射下获得高的光催化活性。
We present a study of photocatalytic activities of Bi2WO6nanoparticles synthesized by fast microwave-assisted method. The photocatalytic activities of the nanoparticles were evaluated by the decolorization of methylene-blue under visible-light-irradiation. Our results show that the surface area of Bi2WO6nanoparticles plays a major role for improving photocatalytic activity, while visible-light absorption has only a weak effect on photocatalytic activity. This suggests efficient transportation of photo-generated electrons and holes to the oxidation active sites on the surface of nanoparticles, indicating Bi2WO6nanoparticles synthesized by fast microwave-assisted method are promising for achieving high photocatalytic activity under visible-light-irradiation.