异质结
催化作用
肖特基势垒
材料科学
肖特基二极管
化学
化学工程
无机化学
光电子学
有机化学
二极管
工程类
作者
Yanqiu Zhang,Dong Yang,Shouchun Ma,Yang Yang,Yina Guan,Dongxu Wang,Yubo Zhao,Li Sheng,Tongjie Yao,Jie Wu
标识
DOI:10.1016/j.apcatb.2023.123059
摘要
A Mott-Schottky heterojunction is reported to boost the peroxymonosulfate (PMS) activation in Fenton-like reaction through a non-radical path. The heterojunction with Co nanoparticles encapsulated by nitrogen-doped graphitized carbon (N-GC) shell was synthesized via pyrolysis of ZIF67 @ZIF8 and subsequent acidic treatment. Benefiting from Mott-Schottky effect, the electrons were transferred from Co nanoparticles to the N-GC shell, leading to the rearranged electron density on N-GC surface and improvement of the PMS activation. The PMS activation efficiency of heterojunction (86.0%) was much higher than the reference catalyst without Mott-Schottky effect (35.3%), and even comparable to Co2+ (86.2%). 85.0% of tetracycline (TC) removal efficiency was realized after only 10.0 s. Moreover, the intrinsic advantages of non-radical path were well inherited by Mott-Schottky heterojunction, including high anti-interfere property toward various anions, cations and organics, high catalytic activity in a wide pH range, low metal leaching, and high magnetic recyclability.
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