Functionalization of TiO2 with graphene quantum dots for efficient photocatalytic hydrogen evolution | |
Department | OSSO国家重点实验室 |
Hao XQ(郝旭强)1; Jin ZL(靳治良)1; Xu J(续京)1; Min SX(敏世雄)1; Lu GX(吕功煊)2; Jin ZL(靳治良); Min SX(敏世雄) | |
2016 | |
Source Publication | Superlattices and Microstructures |
ISSN | 0749-6036 |
Volume | 94Pages:237-244 |
Abstract | Graphene quantum dots (GQDs) serve as a novel solid-state electron transfer reagent anchored on TiO2 by in situ photo-assisted strategy and greatly enhanced photocatalytic H2 evolution activity in methanol aqueous solution without the noble mental cocatalyst. The excellent photocatalytic activities were ascribed to the GQDs which act as an excellent electron transporters and acceptors, as well as photosensitizer. GQDs not only acted as efficient electron reservoirs and a solid-state electron transfer reagent from the conduction band of TiO2 to GQDs, but also acted as an excellent photosensitizer to sensitize TiO2, in which the photoinduced electrons transfer from excited GQDs to TiO2 to produce H2. In addition, GQDs is nanoscale fragments of graphene which can provide a larger active surface and greatly increase the contact area with the TiO2, which is conducive to rapidly transfer photo-generated electrons due to the large specific area and high carrier mobility of GQDs. Thus, GQDs improved the photocatalytic activity for H2 evolution. |
Keyword | Graphene Quantum Dots Solid-state Electron Transfer Reagent Tio2 Photocatalytic Hydrogen Evolution |
Subject Area | 物理化学与绿色催化 |
DOI | 10.1016/j.spmi.2016.04.024 |
Funding Organization | the National Natural Science Foundation (21263001;21463001;21433007) |
Indexed By | SCI |
If | 2.123 |
Language | 英语 |
Funding Project | 环境催化与清洁能源研究组 |
compositor | 第二作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/19962 |
Collection | 羰基合成与选择氧化国家重点实验室(OSSO) |
Corresponding Author | Jin ZL(靳治良); Min SX(敏世雄) |
Affiliation | 1.Beifang Univ Nationalities, Sch Chem & Chem Engn, Yinchuan 750021, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China |
Recommended Citation GB/T 7714 | Hao XQ,Jin ZL,Xu J,et al. Functionalization of TiO2 with graphene quantum dots for efficient photocatalytic hydrogen evolution[J]. Superlattices and Microstructures,2016,94:237-244. |
APA | Hao XQ.,Jin ZL.,Xu J.,Min SX.,Lu GX.,...&敏世雄.(2016).Functionalization of TiO2 with graphene quantum dots for efficient photocatalytic hydrogen evolution.Superlattices and Microstructures,94,237-244. |
MLA | Hao XQ,et al."Functionalization of TiO2 with graphene quantum dots for efficient photocatalytic hydrogen evolution".Superlattices and Microstructures 94(2016):237-244. |
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1-s2.0-S074960361630(1281KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
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