Comparative study of KF, KCl and KBr doped with graphitic carbon nitride for superior photocatalytic degradation of methylene blue under visible light

被引：37
|
作者：
Prabakaran, E. [1 ]
Velempini, T. [1 ]
Molefe, M. [1 ]
Pillay, K. [1 ]
机构：
[1] Univ Johannesburg, Dept Chem Sci, Doornfontein Campus, ZA-2028 Johannesburg, South Africa
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2021年 / 15卷
基金：
新加坡国家研究基金会;
关键词：
KX-g-C3N4; Photocatalyst; Methylene blue; Visible light irradiation; COMPOSITE PHOTOCATALYSTS; HIGHLY EFFICIENT; G-C3N4; DRIVEN; PERFORMANCE; EVOLUTION; HETEROJUNCTIONS; ADSORPTION; OXIDATION; GRAPHENE;
D O I：
10.1016/j.jmrt.2021.10.128
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study potassium salts such as KF, KCl and KBr were doped onto g-C3N4 to form KX-g-C3N4 (X 1/4 F, Cl and Br) via a thermal method. The KX-g-C3N4 was characterized by various instrumentation techniques such as UV-visible, FT-IR, XRD, Photoluminescence, TGA, BET, Raman, SEM, EDAX, HR-TEM, and Zeta potential. KX-g-C3N4 was explored for the photocatalytic degradation of methylene blue (MB) under visible light irradiation. Among them, KF-g-C3N4 showed excellent photocatalytic degradation of methylene blue (MB) under visible light irradiation. The KF-g-C3N4 significantly reduced the electrons-holes recombination rate when compared to KCl-g-C3N4, KBr-g-C3N4 and g-C3N4. The photo catalytic degradation mechanism was also studied with KF-g-C3N4. (c) 2021 Published by Elsevier B.V.
引用
收藏
页码：6340 / 6355
页数：16
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