高等学校化学学报2021，Vol.42Issue(2)：615-623,9.DOI:10.7503/cjcu20200626
金属相1T′MoS2增强类石墨相C3N4的可见光催化性能
Metallic 1T′MoS2 Boosts Graphitic C3N4 for Efficient Visible-light Photocatalysis
摘要
Abstract
Molybdenum disulfide(MoS2),as one of the transition metal dichalcogenides,has been extensively investigated as a promising electrocatalyst or photocatalyst for solar energy applications . Among its poly?morphs,2H MoS2 and 1T MoS2 applied in visible-light-driven photocatalysis has been demonstrated,but the photocatalytic performance including activity and stability is unsatisfactory. Herein,a composite of 1T′MoS2 ultrathin nanosheets and carbon nitride(g-C3N4)nanosheets is fabricated by combining thermal annealing and an electrostatic self-assemble method. The as-prepared nanocomposites exhibit better photocatalytic activity as 6.24 μmol?g?1?h?1 for H2 evolution compared with 4.64 μmol?g?1?h?1 for Pt decorated g-C3N4 nanosheets under visible light irradiation. Apart from this,the composites also show 0.19 min?1 for organic dye(methyl orange) degradation rate while the pure g-C3N4 exhibits 0.053 min?1. The enhancement of photocatalytic performance can be ascribed to the synergistic effects between 1T′MoS2 and g-C3N4,which include improved light absorp?tion and superior charge separation owing to great electron conductivity of 1T′MoS2. The kinetics model and degradation mechanism of the nanocomposites are also proposed.关键词
1T′MoS2/二维复合材料/光催化/共催化剂Key words
1T′MoS2/2D nanocomposite/Photocatalysis/co-Catalyst分类
化学化工引用本文复制引用
贾并泉,叶斌,赵伟,许钫钫,黄富强..金属相1T′MoS2增强类石墨相C3N4的可见光催化性能[J].高等学校化学学报,2021,42(2):615-623,9.基金项目
国家自然科学基金(批准号:21871008, 21801247, 21905292)、上海市科学技术委员会(批准号:18YF1427200)、中国科学院重点研究项目(批准号:QYZDJ-SSW-JSC013)和上海科学技术创新计划(批准号:20DZ1204400)资助.This work is supported by the National Natural Science Foundation of China (Nos. 21871008, 21801247,21905292),the Science and Technology Commission of Shanghai,China(No. 18YF1427200), the Key Research Program of Chinese Academy of Sciences(No. QYZDJ-SSW-JSC013) and the Shanhai Science and Technology Innovation Action Plan,China(No. 20DZ1204400). （批准号:21871008, 21801247, 21905292）
