DOI: 10.1016/j.jcou.2016.04.012
Scopus记录号: 2-s2.0-84965108101
论文题名: Synthesis of BixOyIz from molecular precursor and selective photoreduction of CO2 into CO
作者: Ding C. ; Ye L. ; Zhao Q. ; Zhong Z. ; Liu K. ; Xie H. ; Bao K. ; Zhang X. ; Huang Z.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2016
卷: 14 起始页码: 135
结束页码: 142
语种: 英语
英文关键词: Bi4O5I2
; Bi5O7I
; CO2
; Molecular precursor
; Photoreduction
Scopus关键词: Carbon dioxide
; High resolution transmission electron microscopy
; Photocatalysts
; Photoelectron spectroscopy
; Scanning electron microscopy
; X ray diffraction
; Brunauer emmett tellers
; Mechanism studies
; Molecular precursor
; Monochromatic light
; Photo-reduction
; Photocatalytic activities
; Solvothermal method
; Uv-vis diffuse reflectance spectrum
; X ray photoelectron spectroscopy
英文摘要: In this paper, different BixOyIz photocatalysts (Bi4O5I2 and Bi5O7I) have been successfully synthesized via two different methods to process molecular precursor. The precursor was papered by solvothermal method with Bi(NO3)3·5H2O, glycerol and iodine. Bi4O5I2 was obtained by hydrolyzing the precursor, and Bi5O7I was achieved via calcining the precursor at 400 °C. The as-prepared BixOyIz photocatalysts were characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), high-resolution transmission electron microscopy (HRTEM) and UV-vis diffuse reflectance spectra (DRS). The photocatalytic results showed that Bi4O5I2 and Bi5O7I can photoreduce CO2 into CO selectively. Bi4O5I2 (19.82 umol h-1 g-1) has higher photocatalytic activity for CO2 photoreduction than Bi5O7I (1.73 umol h-1 g-1). The AQY for the solar fuels productions over Bi4O5I2 reached 0.37% at 420 nm monochromatic light irradiation. The selectivity of Bi4O5I2 was more than 99.9%. Photocatalytic mechanism studies revealed that the higher conduction band (CB) edge of Bi4O5I2 resulted in higher photoactivity for CO2 photoreduction. © 2016 Elsevier Ltd. All rights reserved.
资助项目: National Natural Science Foundation of China
; National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52913
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Ding C.,Ye L.,Zhao Q.,et al. Synthesis of BixOyIz from molecular precursor and selective photoreduction of CO2 into CO[J]. Journal of CO2 Utilization,2016-01-01,14