Details

Autor(en) / Beteiligte

• Hao, Quanguo
• Mo, Zhao
• Chen, Zhigang
• She, Xiaojie
• Xu, Yuanguo
• Song, Yanhua
• Ji, Haiyan
• Wu, Xiangyang
• Yuan, Shouqi
• Xu, Hui
• Li, Huaming

Titel

0D/2D Fe2O3 quantum dots/g-C3N4 for enhanced visible-light-driven photocatalysis

Ist Teil von

• Colloids and surfaces. A, Physicochemical and engineering aspects, 2018-03, Vol.541, p.188-194

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals

Beschreibungen/Notizen

• The Fe2O3 QDs/2D-C3N4 composites are synthesized by combining ultrasonic dispersion with low temperature calcination. The composites feature several nanometers sized Fe2O3 QDs well dispersed on 2D-C3N4, and the composites show high photocurrent response and photocatalytic activity. In addition, the Fe2O3 QDs/2D-C3N4 sample still maintains its satisfying stability with negligible activity reduction after four photoreactions. [Display omitted] 0D/2D photocatalysts have aroused concern due to the high charge mobility. Herein, a 0D/2D structure is formed by employing a facile method to disperse Fe2O3 Quantum-Dots (QDs) on 2D-C3N4 without aggregation at a relatively low temperature of 200 °C. The ultrathin monolayer 2D structure, highly dispersed Fe2O3 QDs, the strong coupling as well as quantum-sized confinement effect between them lead to superior visible-light-driven photocurrent performance and photocatalytic activity. Particularly, the 0.5% Fe2O3 QDs/2D-C3N4 composite exhibits the highest photocatalytic activity under visible light. More importantly, the 0D/2D photocatalysts show superior durability with little photocatalytic activity decline in the circular reaction for the photocatalytic degradation of organic pollution. Therefore, this work supplies a new opportunity to construct multifunctional 0D/2D photocatalysts for degradation of pollutants in water.