Construction of ultra-thin 2D CN-Br0.12/2%RhOx photo-catalyst with rapid electron and hole separation for efficient bisphenol A degradation

被引：43

作者：

Fei, Heng ^{[1
]}

Shao, Junxia ^{[1
]}

Li, Hua ^{[1
,2
]}

Li, Najun ^{[1
,2
]}

Chen, Dongyun ^{[1
,2
]}

Xu, Qingfeng ^{[1
,2
]}

He, Jinghui ^{[1
,2
]}

Lu, Jianmei ^{[1
,2
]}

机构：

[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Suzhou 215123, Jiangsu, Peoples R China

[2] Natl Ctr Int Res Intelligent New Nanomat & Detect, Suzhou 215123, Jiangsu, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2021年 / 299卷

关键词：

Ultrathin; g-C3N4; Cocatalysts; Degradation; ENHANCED PHOTOCATALYTIC PERFORMANCE; HYDROGEN EVOLUTION; COMPOSITE PHOTOCATALYSTS; MOLECULAR-OXYGEN; MONOLAYER G-C3N4; FACILE SYNTHESIS; CHARGE-TRANSFER; QUANTUM DOTS; WATER; SEMICONDUCTORS;

D O I：

10.1016/j.apcatb.2021.120623

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

g-C3N4 (CN), which shows enormous potential for photocatalysis, has long been studied, but still exhibits an unsatisfactory degradation rate. Herein, dual cocatalysts, Br and ultrafine RhOx nanoparticles, were constructed on ultrathin CN for synergetic photo-catalysis. Ultrathin CN increased the exciton separation efficiency, while cocatalysts Br and RhO x can accelerated electron and hole transfer simultaneously, maximizing the photocatalytic degradation performance of CN. This CN-Br-0.12/2%RhOx degraded 10 ppm bisphenol A (BPA) in 9 min, which represents the fastest degradation rate reported to date. This excellent performance was also demonstrated by a larger photocurrent response, higher separation efficiency, and faster transfer rate for electron-hole pairs than CN. This work obtained an enhanced electron-hole separation efficiency and migration rate by combing ultrathin CN with dual-channel cocatalysts, leading to the best photocatalytic degradation performance reported for CN.

引用

页数：12

共 72 条

[21] Platinum-modified covalent triazine frameworks hybridized with carbon nanoparticles as methanol-tolerant oxygen reduction electrocatalysts [J].