光催化
异质结
热液循环
降级(电信)
复合数
化学工程
可见光谱
纳米颗粒
反应速率常数
化学
材料科学
纳米技术
光化学
催化作用
光电子学
有机化学
动力学
复合材料
计算机科学
物理
电信
量子力学
工程类
作者
Jing Xu,Juan Chen,Yanhui Ao,Peifang Wang
标识
DOI:10.1016/j.cclet.2021.04.003
摘要
Low dimension nano photocatalysts show great potential in the field of treating contaminated water for their large surface area and size effect. In this study, a 0D/1D AgI/MoO3 Z-scheme photocatalyst with striking photocatalytic performance was constructed successfully. The one-dimensional MoO3 nanobelts were prepared by a simple hydrothermal method, and then it was modified by AgI nanoparticles in a handy deposition approach. When choosing sulfamethoxazole (SMZ) as the target contaminant, the rate constant value of the optimal 0D/1D AgI/MoO3 composite could hit up to 0.13 min−1, which is nearly 22.4 times and 32.5 times as that of pure MoO3 (0.0058 min−1) and AgI (0.0040 min−1), respectively. A series of detailed characterizations give evidences that the charge transfer in the composite followed Z scheme mechanism. Therefore, efficient separation/transfer and the remained high redox activity of photogenerated carriers played a vital role in the sharply enhanced photocatalytic properties. The possible degradation pathways of SMZ were proposed based on the intermediates detected by high-performance liquid chromatography-mass spectrometry (HPLC-MS). Meanwhile, the magnificent cyclic stability makes the material a promising material in the practical application.
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