Capsule-like CdS-modified TiO2 nanocomposites with enhanced photodegradation under visible light irradiation
- Author(s): Xiaojie Song 1, 2 ; Fan Yang 3 ; Qunling Fang 4 ; Hanmei Hu 1 ; Liuqian Sun 1
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View affiliations
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Affiliations:
1:
School of Materials and Chemical Engineering, Anhui Jianzhu University, Hefei 230601, People's Republic of China;
2: School of Resources and Environmental Engineering, Anhui University, Hefei 230009, People's Republic of China;
3: Department of Chemistry, Anhui Medical University, Hefei 230026, People's Republic of China;
4: School of Medical Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China
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Affiliations:
1:
School of Materials and Chemical Engineering, Anhui Jianzhu University, Hefei 230601, People's Republic of China;
- Source:
Volume 10, Issue 3,
March 2015,
p.
157 – 160
DOI: 10.1049/mnl.2014.0491 , Online ISSN 1750-0443
Novel cadmium sulfide (CdS)/titanium dioxide (TiO2) nanocomposites with uniform ‘capsule-like’ distribution of CdS nanocrystals on TiO2 nanoparticles (NPs) were successfully prepared by the hydrothermal method and the hot-injection method. The CdS/TiO2 nanocomposites were characterised by X-ray powder diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, high-resolution transmission electron microscopy and scanning electron microscopy. The CdS/TiO2 nanocomposites (with Ti/Cd mass ratio of 1:1) exhibited excellent photocatalytic activity in the degradation of rhodamine B in water compared with pure TiO2 NPs and CdS NPs under visible light. The product might have potential applications in the cleanup of the environment because of its excellent photocatalytic activity.
Inspec keywords: catalysis; wide band gap semiconductors; liquid phase deposition; photodissociation; scanning electron microscopy; X-ray diffraction; II-VI semiconductors; semiconductor growth; cadmium compounds; dyes; titanium compounds; Fourier transform infrared spectra; nanoparticles; transmission electron microscopy; nanofabrication; nanocomposites
Other keywords: Fourier transform infrared spectroscopy; nanoparticles; scanning electron microscopy; photocatalytic activity; visible light irradiation; hot-injection method; hydrothermal method; X-ray powder diffraction; CdS-TiO2; high-resolution transmission electron microscopy; capsule-like CdS-modified TiO2 nanocomposites; rhodamine B degradation; photodegradation
Subjects: Deposition from liquid phases; Photolysis and photodissociation by IR, UV and visible radiation; Deposition from liquid phases (melts and solutions); Nanometre-scale semiconductor fabrication technology; II-VI and III-V semiconductors; Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials; Optical properties of thin films, low-dimensional and nanoscale structures; Nanofabrication using thin film deposition methods; Heterogeneous catalysis at surfaces and other surface reactions; Infrared and Raman spectra and scattering (condensed matter); Oxide and ferrite semiconductors
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