光催化
异质结
石墨氮化碳
材料科学
纳米复合材料
带隙
半导体
微晶
氮化碳
亚甲蓝
降级(电信)
化学工程
光化学
可见光谱
光电子学
纳米技术
催化作用
化学
有机化学
电信
计算机科学
工程类
冶金
作者
Mahalakshmi Krishnasamy,Ranjith Rajendran,S. Vignesh,A. Priyadharsan,Diravidamani Barathi,Mohd. Shkir,Algarni Hamed
标识
DOI:10.1007/s11356-023-26418-2
摘要
Among different types of semiconductor photocatalysts, MoS2 hybridized with graphitic carbon heterojunction has developed the most promising "celebrity" due to its static chemical properties, suitable band structure, and facile synthesis. Physiochemical and surface characterizations were revealed with structural, electronic, and optical analysis. Diffused reflectance spectroscopy evidenced the energy band gap tailoring from 2.62 eV for pure g-C3N4 and 1.68 eV for MoS2 to 2.12 eV for the hybridized heterojunction nanocomposite. Effective electron/hole pair separation, rise in redox species, and great utilization of solar range because of band gap modifying leading to greater degradation efficacy of g-C3N4/MoS2 heterojunction. The photocatalytic degradation with MoS2/g-C3N4 heterojunction catalyst to remove methylene blue dye was remarkably enriched and much higher than g-C3N4. By carefully examining the stimulus aspects, a probable mechanism is suggested, assuming that the concurring influence of MoS2 and g-C3N4, the lesser crystallite size, and more solubility in aquatic solution furnish the efficient e--h+ pair separation and tremendous photocatalytic degradation activity. This work delivers a novel idea to improve the efficient MoS2/g-C3N4 heterojunction for improved photocatalytic degradation in environmental refinement.
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