DOI: 10.1016/j.jcou.2018.04.004
Scopus记录号: 2-s2.0-85046458771
论文题名: Solar spectrum photocatalytic conversion of CO2 to CH4 utilizing TiO2 nanotube arrays embedded with graphene quantum dots
作者: Zubair M. ; Kim H. ; Razzaq A. ; Grimes C.A. ; In S.-I.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 26 起始页码: 70
结束页码: 79
语种: 英语
英文关键词: Graphene quantum dots
; Methylene Blue dye degradation
; Nanostructure
; Photocatalytic CO2 conversion
; TiO2 nanotubes
Scopus关键词: Absorption spectroscopy
; Aromatic compounds
; Carbon dioxide
; Charge transfer
; Electrodeposition
; Electrodes
; Energy gap
; Graphene
; Light
; Light absorption
; Nanocrystals
; Nanostructures
; Nanotubes
; Solar radiation
; Titanium dioxide
; Yarn
; High conductivity
; Methylene blue dye
; Photo-catalytic
; Photocatalytic materials
; Photocatalytic performance
; Photogenerated charge recombination
; TiO2 nanotube arrays
; TiO2 nanotubes
; Semiconductor quantum dots
英文摘要: TiO2 nanotube arrays (TNT) offer an exciting prospect as a photocatalytic material architecture due to the combined properties of high surface area, 1-D vectorial charge transfer, and reduced photogenerated charge recombination. However the TiO2 band gap (≈3.2eV) limits light absorption to the UV region, which comprises but a small fraction of the solar spectrum energy. Graphene is known to effectively absorb visible light, and due to its high conductivity promote efficient charge transfer. Herein, we present a novel photocatalyst composed of TNTs sensitized with electrodeposited graphene quantum dots (GQDs). GQDs electrodeposition-duration is varied to optimize photocatalytic performance of the resulting nanostructured graphene-TNT (G-TNT) films. Under solar spectrum illumination we find optimal G-TNT samples promote a CO2 to CH4 photocatalytic conversion rate of 1.98ppmcm-2 h-1, with carbon origin confirmed by 13CO2 isotopic test. © 2018 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/111880
Appears in Collections: 气候减缓与适应
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作者单位: Department of Energy Science and Engineering, DGIST, Dalseong-gun, 333 Techno Jungang-daero, Hyeonpung-myeon, Daegu, 42988, South Korea; Department of Chemical Engineering, COMSATS Institute of Information Technology, Off Raiwind Road 1.5 KM Defence Road, Lahore, 54000, Pakistan; Flux Photon Corporation, 6900 Darcy Lane, Raleigh, NC 27606, United States
Recommended Citation:
Zubair M.,Kim H.,Razzaq A.,et al. Solar spectrum photocatalytic conversion of CO2 to CH4 utilizing TiO2 nanotube arrays embedded with graphene quantum dots[J]. Journal of CO2 Utilization,2018-01-01,26