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- Title
Preparation and visible-light photocatalytic performances of g-CN surface hybridized with a small amount of CdS nanoparticles.
- Authors
Wang, Desong; Xu, Zexuan; Luo, Qingzhi; Li, Xueyan; An, Jing; Yin, Rong; Bao, Cai
- Abstract
An efficient visible-light photocatalyst was successfully synthesized by surface-hybridizing graphitic carbon nitride (g-CN) using a small amount of cadmium sulfide (CdS) nanoparticles. The CdS/g-CN nanocomposites were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy, scanning electron microscopy, transmission electron microscopy, UV-Vis diffuse reflectance spectroscopy, photoluminescence spectroscopy, electrochemical impedance spectroscopy, and photocurrent-time measurement. The photocatalytic activity of the CdS/g-CN nanocomposites was investigated by evaluating the degradation of Rhodamine B (RhB) under visible-light irradiation. The effects of the CdS content on the nanocomposites, initial RhB concentration, pH value of the investigated system, and dosage of CdS/g-CN nanocomposites on the visible-light photocatalytic activity were systematically investigated. The results revealed that the visible-light photocatalytic activity of g-CN-based photocatalysts was significantly improved by surface-hybridization of a small amount of CdS nanoparticles, increased as both CdS content on the nanocomposites and dosage of CdS/g-CN nanocomposites increased, while increased at first and then decreased as both initial RhB concentration and pH value of the investigated system increased. The visible-light photocatalytic mechanism of the CdS/g-CN nanocomposites was discussed.
- Subjects
VISIBLE spectra; PHOTOCATALYSTS; NITRIDES; CADMIUM sulfide; GRAPHITE; NANOPARTICLES analysis
- Publication
Journal of Materials Science, 2016, Vol 51, Issue 2, p893
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-015-9417-y