光催化
异质结
光降解
材料科学
罗丹明B
载流子
纳米颗粒
化学工程
光化学
降级(电信)
苯酚
纳米技术
催化作用
化学
光电子学
有机化学
计算机科学
工程类
电信
作者
Yukun Zhu,Yan Zhuang,Lele Wang,Hua Tang,Xianfeng Meng,Xilin She
出处
期刊:Chinese Journal of Catalysis
[China Science Publishing & Media Ltd.]
日期:2022-01-01
卷期号:43 (10): 2558-2568
被引量:75
标识
DOI:10.1016/s1872-2067(22)64099-3
摘要
An S-scheme heterojunction photocatalyst is capable of boosting photogenerated carrier separation and transfer, thus maintaining high photooxidation and photoredox ability. Herein, a 0D Ag3PO4 nanoparticles (NPs)/1D TiO2 nanofibers (NFs) S-scheme heterojunction with intimate interfacial contact was designed via the the hydro-thermal method. Benefiting from the abundant hydroxyl groups and size confinement effect of TiO2 NFs, the average diameter of the Ag3PO4 nanoparticles decreased from 100 to 22 nm, which favored the construction of a 0D/1D geometry heterojunction. The multifunctional Ag3PO4/TiO2 sample exhibited excellent photocatalytic activity and stability in photocatalytic oxygen production (726 µmol/g/h) and photocatalytic degradation of various organic contaminants such as rhodamine B (100%), phenol (60%) and tetracycline hydrochloride (100%). The significant improvements in the photocatalytic performance and stability can be attributed to the intimate interfacial contacts and rich active sites of 0D/1D geometry, fast charge carrier migration, and outstanding photoredox properties induced by the S-scheme charge-transfer route. This work offers a promising strategy for constructing 0D/1D S-scheme heterojunction photocatalysts for improved photocatalytic performance.
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