Novel Ag3PO4/MoO3 p-n heterojunction with enhanced photocatalytic activity and stability under visible light irradiation
Novel Ag3PO4/MoO3 p-n heterojunction with enhanced photocatalytic activity and stability under visible light irradiation
复制标题
新型Ag3PO4/MoO3 p-n异质结在可见光照射下具有增强的光催化活性和稳定性
DOI：
10.1016/j.apsusc.2017.03.025
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发表时间：
2017-07-01
影响因子：
6.7
通讯作者：
Tang, Yubin
中科院分区：
文献类型：
--
作者：
Teng, Wei;Tan, Xiangjun;Tang, Yubin
用一种简单的原位溶剂法成功地制备了Ag_3PO_4/MoO_3 p-n异质结。采用SEM、TEM、XRD、XPS和电化学技术研究了材料的结构和电化学性能。在可见光照射下，以亚甲基蓝为降解对象，考察了复合材料的光催化活性。Ag 3 PO 4/MoO 3催化剂循环使用4次后，光催化活性仍保持在92.5%，远高于纯Ag 3 PO 4的54%。结果表明，与Ag 3 PO 4相比，Ag 3 PO 4/MoO 3异质结构具有更高的光催化活性和更好的稳定性.其优异的光催化活性来源于p-n异质结界面内建电场的作用下，电子空穴对的有效分离，使空穴更有利于染料的氧化。(C)2017爱思唯尔B. V.保留所有权利。
Ag3PO4/MoO3 p-n heterojunction have been successfully fabricated by using a simple in situ solvent method. SEM, TEM, XRD, XPS and electrochemical techniques were used to study the structural and electrochemical characteristics of the resulting materials. The photocatalytic activity of the obtained composite was tested by the degradation of organic dye (methylene blue) under visible-light irradiation. The photocatalytic activity of Ag3PO4/MoO3 remained 92.5% after four recycling runs, which was much higher than that of the pure Ag3PO4 (54%). The obtained results confirm that the novel Ag3PO4/MoO3 heterostructure exhibited significantly higher photocatalytic activities and improved stability compared with bare Ag3PO4. The excellent photocatalytic activity came from the effective separation of the electron hole pairs under the effect of built-in electric field in the interfacial the of the p-n heterojunction, and then made the holes more available for dyes oxidation. (C) 2017 Elsevier B.V. All rights reserved.