基于二维材料的自催化光反应器
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- 英文论文题名：Self-Catalytic Membrane Photo-Reactor made of Two-dimensional Nanosheets
- 论文作者：周凯歌 ; Daryl McManus ; Eric Prestat ; 钟兴 ; Yuyoung Shin ; 张浩力 ; Sarah J.Haigh ; Cinzia Casiraghi
- 英文论文作者：Kai-Ge Zhou ; Daryl McManus ; Eric Prestat ; Xing Zhong ; Yuyoung Shin ; Hao-Li Zhang ; Sarah J.Haigh ; Cinzia Casiraghi ; School of Chemistry ; University of Manchester ; School of Materials ; University of Manchester ; College of Chemical Engineering and Materials Science ; Zhejiang University of Technology ; State Key Laboratory of Applied Organic Chemistry ; Lanzhou University
- 年：2016
- 作者机构：School of Chemistry, University of Manchester;School of Materials, University of Manchester;浙江工业大学化学工程学院;兰州大学功能有机分子化学国家重点实验室;
- 论文关键词：二维石墨相氮化碳 ; 光催化 ; 光反应器 ; 二维薄膜
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十七分会：纳米催化
- 语种：中文
- 分类号：O643.3
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十七分会 ; 纳米催化
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：2
- 文件大小：157k
- 原文格式：D
- 会议级别：全国
摘要
基于二维层间的空间位阻,由氧化石墨烯或其它二维材料构成的薄膜具有特殊的尺寸选择效应,在气体和液体分离薄膜方面具有广阔的应用前景~1。然而目前仍无利用二维层间作为反应器的报道。本研究中使用真空抽滤将二维石墨相氮化碳组装成薄膜,作为一种自催化光反应器。光降解研究表明该二维薄膜表现出优异的光催化特质。薄膜由石墨相氮化碳层层堆叠而成,反应物可以在薄膜层间的纳米通道中流动,大大增加了反应物与氮化碳的接触几率,并且薄膜还可以被看作是一系列纳米反应器的集合,进一步有效提高了反应效率。由于石墨相氮化碳可以在可见光下高效催化多种反应,我们期望自催化二维薄膜在可持续化学领域具有更多的应用。
Owing to the spatial restriction through the interlayer spacing, membranes made of graphene oxide nanosheets or other two-dimensional materials have shown unique selective permeation of water and ions, opening the possibility of using these membranes for gas or liquid separation.~1 However, it has no report on using the 2D interlayer spacing as a chemical reactor. In this study we use a membrane photo-reactor(MPR) made of photo-catalytic 2D nanosheets of graphitic carbon nitride(g-C_3N_4), assembled by vacuum filtration, for a solar-driven photo-oxidation. Photo-degradation studies show that the membranes are very efficient in the degradation of organic dyes. The catalyst is a layer-by-layer stacking laminate, and the reactant can flow through the interlayer nano-channel of the membrane. Therefore, the probability of the reactants to be close to the catalyst is enhanced, making the reaction very efficient. Moreover, the whole laminate can be treated as a series connection of numerous nano-reactors. Since g-C_3N_4 has been shown to be an efficient photo-catalyst for many reactions under visible light, we expect self-catalytic MPRs to find several applications in sustainable chemistry.
Owing to the spatial restriction through the interlayer spacing, membranes made of graphene oxide nanosheets or other two-dimensional materials have shown unique selective permeation of water and ions, opening the possibility of using these membranes for gas or liquid separation.~1 However, it has no report on using the 2D interlayer spacing as a chemical reactor. In this study we use a membrane photo-reactor(MPR) made of photo-catalytic 2D nanosheets of graphitic carbon nitride(g-C_3N_4), assembled by vacuum filtration, for a solar-driven photo-oxidation. Photo-degradation studies show that the membranes are very efficient in the degradation of organic dyes. The catalyst is a layer-by-layer stacking laminate, and the reactant can flow through the interlayer nano-channel of the membrane. Therefore, the probability of the reactants to be close to the catalyst is enhanced, making the reaction very efficient. Moreover, the whole laminate can be treated as a series connection of numerous nano-reactors. Since g-C_3N_4 has been shown to be an efficient photo-catalyst for many reactions under visible light, we expect self-catalytic MPRs to find several applications in sustainable chemistry.
引文
[1]Joshi,R.K.;Carbone,P.;Wang,F.C.;Kravets,V.G.;Su,Y.;Grigorieva,I.V.;Wu,H.A.;Geim,A.K.&Nair,R.R.Science,2014,343:752.
[2]Zhou,K.-G.*;McM anus,D.;Prestat,E.;Zhong,X.;Shin,Y.;Zhang,H.-L.;Haigh,S.J.&Casiraghi,C*J.Mater.Chem.A,2016,ASAP DOI:10.1039/C5TA09152G
[2]Zhou,K.-G.*;McM anus,D.;Prestat,E.;Zhong,X.;Shin,Y.;Zhang,H.-L.;Haigh,S.J.&Casiraghi,C*J.Mater.Chem.A,2016,ASAP DOI:10.1039/C5TA09152G