期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 202, 期 -, 页码 104-111出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2016.08.064
关键词
Photocatalytic; Full-spectrum; Co2.67S4 nanoparticles; Near-infrared; Methylene blue
资金
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [51521006]
- National Natural Science Foundation of China [71431006, 21276069, 71221061]
Sparked by growing pollution issues, research aiming at a better harvesting of solar energy in photo catalysts for environmental remediation has been thriving. In this study, a novel mixed valence state of Co2.67S4 nanoparticles with full-spectrum-responsive photocatalytic activity had been fabricated via a facile solvothermal route. The as-synthesized samples were systematically characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV-vis-NIR diffuse reflection spectroscopy (UV-vis-NIR DRS). The photocatalytic performance of as-obtained samples had been investigated by the degradation of methylene blue (MB) in aqueous solution. The Co2.67S4 nanoparticles with the particle size of 5-20 nm could degrade MB with the efficiency of 64%, 84% and 68% under the UV light, visible light and near-infrared light exposure, respectively. Furthermore, a possible photocatalytic mechanism toward the near-infrared region had been proposed to be that the Co2+/Co3+ redox couple played vital parts in the photocatalytic activity of CO2.67S4. This study provides a novel full solar spectrum-responsive photocatalyst for solar-light utility and environmental remediation. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据