Ultrathin g-C3 N4 Nanosheets Coupled with AgIO3 as Highly Efficient Heterostructured Photocatalysts for Enhanced Visible-Light Photocatalytic Activity.
The photocatalytic activity of graphite-like carbon nitride (g-C3 N4 ) could be enhanced by heterojunction strategies through increasing the charge-separation efficiency. As a surface-based process, the heterogeneous photocatalytic process would become more efficient if a larger contact region existed in the heterojunction interface. In this work, ultrathin g-C3 N4 nanosheets (g-C3 N4 -NS) with much larger specific surface areas are employed instead of bulk g-C3 N4 (g-C3 N4 -B) to prepare AgIO3 /g-C3 N4 -NS nanocomposite photocatalysts. By taking advantage of this feature, the as-prepared composites exhibit remarkable performances for photocatalytic wastewater treatment under visible-light irradiation. Notably, the optimum photocatalytic activity of AgIO3 /g-C3 N4 -NS composites is almost 80.59 and 55.09 times higher than that of pure g-C3 N4 -B towards the degradation of rhodamine B and methyl orange pollutants, respectively. Finally, the stability and possible photocatalytic mechanism of the AgIO3 /g-C3 N4 -NS system are also investigated.
Jilin Provincial Key Laboratory of Micro-Nano, Functional Materials, Department of Chemistry, Northeast Normal University, Changchun 130024 (P.R. China).
Yunfeng
Y
Li
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 (P.R. China).
Kai
K
Li
Jilin Provincial Key Laboratory of Micro-Nano, Functional Materials, Department of Chemistry, Northeast Normal University, Changchun 130024 (P.R. China).
Yang
Y
Yang
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 (P.R. China).
Leijiao
L
Li
Jilin Provincial Key Laboratory of Micro-Nano, Functional Materials, Department of Chemistry, Northeast Normal University, Changchun 130024 (P.R. China). xingy202@nenu.edu.cn.
Yan
Y
Xing
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 (P.R. China).
Shuyan
S
Song
Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA 15213, (USA).
Rongchao
R
Jin
Center for Organized Matter Chemistry, School of Chemistry, University of Bristol, Bristol BS8 1TS (UK).
Mei
M
Li
carbon; dyes/pigments; photochemistry; semiconductors; surface chemistry