DOI: 10.1016/j.jcou.2018.06.016
Scopus记录号: 2-s2.0-85049873258
论文题名: Plasmonic gold deposited on mesoporous TixSi1-xO2 with isolated silica in lattice: An excellent photocatalyst for photocatalytic conversion of CO2 into methanol under visible light irradiation
作者: Yadav R. ; Amoli V. ; Singh J. ; Tripathi M.K. ; Bhanja P. ; Bhaumik A. ; Sinha A.K.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 27 起始页码: 11
结束页码: 21
语种: 英语
英文关键词: Methanol production
; Photocatalytic CO2 reduction
; Plasmonic gold
; TixSi1-xO2
Scopus关键词: Atomic emission spectroscopy
; Carbon dioxide
; Chemical analysis
; Cyclic voltammetry
; Density functional theory
; Enamels
; Field emission microscopes
; Gold deposits
; Gold nanoparticles
; Greenhouse gases
; High resolution transmission electron microscopy
; Inductively coupled plasma
; Irradiation
; Light
; Light sources
; Methanol
; Nanoparticles
; Photocatalysts
; Plasmonics
; Plasmons
; Reaction intermediates
; Scanning electron microscopy
; Silica
; Spectrometry
; Titanium dioxide
; Transmission electron microscopy
; CO2 reduction
; Diffuse reflection spectroscopy
; Energy dispersive X-ray spectrometry
; Field emission scanning electron microscopy
; Inductively coupled plasma atomic emissions
; Methanol production
; Powder X-ray diffraction (pXRD)
; TixSi1-xO2
; Silicon
英文摘要: Solar-driven chemical production of methanol from CO2 has become a hot topic of research due to high-value addition, with methanol as a product, as well as reduction of CO2 which is a greenhouse gas. Here we report gold nanoparticles deposited on mesoporous titania with isolated Si sites, which converted CO2 into methanol under visible light irradiation using LED light source. Si amount in titania lattice was optimized to obtain the best methanol yield. DFT calculation showed that Si sites incorporation was responsible for higher adsorption of CO2 onto the surface, which was further proved experimentally with CO2 uptake results. We achieved highest methanol production of 1835μmolgcat -1 using Au/TixSi1-xO2 material with 28mol% Si in titania lattice and 1.0wt% Au nanoparticles deposition. The Au/TixSi1-xO2 photocatalysts were thoroughly characterized by inductively coupled plasma atomic emission (ICP-AES) spectrometry, powder X-ray diffraction (PXRD), field emission scanning electron microscopy (FE-SEM), high angle annular dark field-scanning transmission electron microscopic (HAADF-STEM), transmission electron microscopy (TEM), energy dispersive X-ray spectrometry (EDX), 29Si MAS NMR, UV-vis diffuse reflection spectroscopy (DRS), N2 sorption studies, CO2 uptake experiments, cyclic voltammetry (CV) and DFT calculations. The products were analyzed by GC-FID, GC-MS, and HPLC. The photocatalytic reaction was monitored using in situ FT-IR which established the formation of formaldehyde as an intermediate product which further converted into methanol. © 2018 Published by Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111782
Appears in Collections: 气候减缓与适应
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作者单位: CSIR-Indian Institute of Petroleum, Dehradun, 248005, India; Network Institute of Solar Energy-CSIR-NISE, New Delhi, India; Academy of Scientific and Innovative Research (AcSIR), New Delhi, India; Department of Material Science, Indian Association for the Cultivation of Science, Jadavpur Kolkata, 700032, India
Recommended Citation:
Yadav R.,Amoli V.,Singh J.,et al. Plasmonic gold deposited on mesoporous TixSi1-xO2 with isolated silica in lattice: An excellent photocatalyst for photocatalytic conversion of CO2 into methanol under visible light irradiation[J]. Journal of CO2 Utilization,2018-01-01,27