DOI: 10.1016/j.jcou.2014.06.003
Scopus记录号: 2-s2.0-84904536559
论文题名: Synthesis of nanocomposite CdS/TiO2 and investigation of its photocatalytic activity for CO2 reduction to CO and CH4 under visible light irradiation
作者: Ahmad Beigi A. ; Fatemi S. ; Salehi Z.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2014
卷: 7 起始页码: 23
结束页码: 29
语种: 英语
英文关键词: Light irradiation
; Nano photocatalyst
; UV-visible
Scopus关键词: Cadmium sulfide
; Carbon monoxide
; Energy dispersive spectroscopy
; Field emission microscopes
; Irradiation
; Methane
; Nanocomposites
; Photocatalysis
; Photocatalysts
; Titanium dioxide
; X ray diffraction
; CdS-TiO
; Light irradiations
; Nano photocatalysts
; Reduction of co
; UV-visible
; Carbon dioxide
英文摘要: CdS-TiO2 nanocomposites were synthesized with various CdS weight ratios of 9%, 23%, 45% and 74% by the hydrothermal process. The prepared samples were characterized by X-ray diffraction (XRD), UV-visible diffuse reflectance spectroscopy (DRS), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS) and Brunauer-Emmett-Teller (BET) analysis. Samples were coated on the surface of the perforated stainless steel and the photocatalytic activity of the catalysts was investigated under both UV-visible and visible irradiation to convert CO2 to carbon monoxide and methane. Significant improvement was observed for the activity of CdS-TiO2 nanocomposites compared with pure nano TiO2 under both UV-visible and visible light scattering in a batch gaseous reactor. The activity of CdS-TiO2 nanomaterial was found to be related to the CdS content and the size of nanoparticles. Maximum photocatalytic activity was observed for an optimal weight ratio of 45% CdS/TiO2 with 13 nm average crystal size. The photocatalytic experiments were taken for 8 h and formation of CO and CH4 was detected in gas phase, whereas CO production was five folds more than methane formation. Under UV-visible irradiation, photocatalytic activity of CdS-TiO2 for CO and CH 4 formation was observed 35% and 50%, respectively, more than that under visible light. © 2014 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53016
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Ahmad Beigi A.,Fatemi S.,Salehi Z.. Synthesis of nanocomposite CdS/TiO2 and investigation of its photocatalytic activity for CO2 reduction to CO and CH4 under visible light irradiation[J]. Journal of CO2 Utilization,2014-01-01,7