光催化
材料科学
锐钛矿
异质结
降级(电信)
化学工程
可见光谱
纳米管
阳极氧化
催化作用
纳米技术
辐照
光电子学
碳纳米管
复合材料
化学
有机化学
核物理学
铝
工程类
物理
电信
计算机科学
作者
Yajun Bi,Jiadong Li,Changchang Dong,Wei Mu,Xiaojun Han
出处
期刊:ChemPhotoChem
[Wiley]
日期:2020-01-17
卷期号:4 (5): 366-372
被引量:13
标识
DOI:10.1002/cptc.201900283
摘要
Abstract A novel type of heterostructured photocatalyst, MnCo 2 O 4.5 deposited TiO 2 nanotube arrays (TNAs), was successfully synthesized via a two‐step anodization and chemical bath deposition method. The decoration of MnCo 2 O 4.5 nanoparticles on anatase TNAs significantly enhances its photocatalytic degradation activity of tetracycline (TC). The optimized 140MnCo 2 O 4.5 /TiO 2 nanotube arrays (140 M/TNA) catalyst exhibited the highest photocatalytic degradation of TC with an efficiency of 93.1 % after 2 h illumination. Meanwhile, the material showed good stability after a 5 cycle test. The mechanism of increased activity is attributed to the MnCo 2 O 4.5 /TiO 2 heterostructure, which extends the response range to visible light and promotes electron–hole separation. Further radical capture experiment reveals that . O 2 − is vital as an active species for degrading TC in this system. The photocatalyst obtained via this rational synthesis strategy can effectively remove organic pollutants from waste water under visible light irradiation.
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