Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/163932
Title: Regulating directional transfer of electrons on polymeric g-C₃N₅ for highly efficient photocatalytic H₂O₂ production
Authors: Che, Huinan
Wang, Jian
Gao, Xin
Chen, Juan
Wang, Peifang
Liu, Bin
Ao, Yanhui
Keywords: Engineering::Chemical engineering
Issue Date: 2022
Source: Che, H., Wang, J., Gao, X., Chen, J., Wang, P., Liu, B. & Ao, Y. (2022). Regulating directional transfer of electrons on polymeric g-C₃N₅ for highly efficient photocatalytic H₂O₂ production. Journal of Colloid and Interface Science, 627, 739-748. https://dx.doi.org/10.1016/j.jcis.2022.07.080
Project: RG4/20 
MOET2EP10120-0002 
A20E5c0080
Journal: Journal of Colloid and Interface Science
Abstract: Graphite carbon nitride (g-C3N5) has been widely used in various photocatalytic reactions due to its higher thermodynamic stability and better electronic properties compared to g-C3N4. However, it is still challenging to endow g-C3N5 with high performance on photocatalytic hydrogen peroxide (H2O2) production. Herein, potassium and iodine are co-doped into g-C3N5 (g-C3N5-K, I) for photocatalytic production of H2O2 with high efficiency. As expected, the photocatalytic H2O2 production rate over the g-C3N5-K, I (2933.4 μM h-1) reaches to 84.22 times as that of g-C3N5. The excellent photocatalytic H2O2 production activity is mainly ascribed to the co-doping of K and I, which significantly improves the capacity of oxygen (O2) adsorption, selectivity of two-electrons oxygen reduction reaction (2e- ORR) and separation efficiency of charge carriers. The density functional theory (DFT) calculations reveal that O2 molecules are more conducive to being adsorbed on g-C3N5-K, I. Besides, the result of excited states further indicates that photo-generated electrons can be directionally driven to the adsorbed O2 molecules, which are effectively activated to form H2O2. The findings will contribute to new insights in designing and synthesizing g-C3N5 based photocatalysts for the H2O2 production.
URI: https://hdl.handle.net/10356/163932
ISSN: 0021-9797
DOI: 10.1016/j.jcis.2022.07.080
Schools: School of Chemical and Biomedical Engineering 
School of Physical and Mathematical Sciences 
Rights: © 2022 Elsevier Inc. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles
SPMS Journal Articles

SCOPUSTM   
Citations 20

28
Updated on Apr 17, 2024

Web of ScienceTM
Citations 20

14
Updated on Oct 29, 2023

Page view(s)

201
Updated on Apr 23, 2024

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.