DOI: 10.1016/j.scib.2019.10.015
论文题名: Highly efficient charge transfer in CdS-covalent organic framework nanocomposites for stable photocatalytic hydrogen evolution under visible light
作者: Wang D. ; Zeng H. ; Xiong X. ; Wu M.-F. ; Xia M. ; Xie M. ; Zou J.-P. ; Luo S.-L.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期: 2 起始页码: 113
结束页码: 122
语种: 英语
中文关键词: CdS nanoparticles
; Charge transfer dynamics
; Covalent organic frameworks
; Hydrogen generation
; Photo-deposition
英文关键词: Cadmium sulfide
; Charge transfer
; Deposition
; Hydrogen production
; II-VI semiconductors
; Laser spectroscopy
; Light
; Nanocomposites
; Photocatalytic activity
; Solar energy
; Sulfur compounds
; Charge-transfer dynamics
; Covalent organic frameworks
; Covalent triazine-based frameworks
; Hydrogen generations
; Photo-deposition
; Photocatalytic hydrogen evolution
; Solar energy transformations
; Time-resolved spectroscopy
; CdS nanoparticles
英文摘要: A facile and effective impregnation combined with photo-deposition approach was adopted to deposit cadmium sulfide (CdS) nanoparticles on CTF-1, a covalent triazine-based frameworks (CTFs). In this system, CTF-1 not only acted as supporter but also served as photocatalyst and electron donor. The performance of the obtained CdS deposited CTF-1 (CdS-CTF-1) nanocomposite was evaluated by H2 evolution reaction under visible light irradiation. As a result, CdS-CTF-1 exhibited high H2 production from water, far surpassing the CdS/CTF-1 nanocomposite, in which CdS was deposited via solvothermal method. The high activity of CdS-CTF-1 was attributed to the confined CdS nanoparticles with small size, leading to expose more active sites. In addition, time-resolved spectroscopy indicated that the superior performance of CdS-CTF-1 also can be ascribed to the fast electron transfer rate and injection efficiency (KET = 0.18 × 109 s−1, ηinj = 39.38%) between CdS and CTF-1 layers, which are 3.83 times faster and 4.84 times higher than that of CdS/CTF-1 nanocomposite. This work represents the first example on using covalent organic frameworks (COFs) as a support and electron-donor for fabricating novel CdS-COF nanocomposite system and its potential application in solar energy transformations. © 2019 Science China Press Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170055
Appears in Collections: 气候变化与战略
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作者单位: Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, China
Recommended Citation:
Wang D.,Zeng H.,Xiong X.,et al. Highly efficient charge transfer in CdS-covalent organic framework nanocomposites for stable photocatalytic hydrogen evolution under visible light[J]. Science Bulletin,2020-01-01,65(2)