文献类型：期刊文献

英文题名：Mesoporous TiO2 Nanocrystals Grown in Situ on Graphene Aerogels for High Photocatalysis and Lithium-Ion Batteries

作者：Qiu, Bocheng;Xing, Mingyang[1];Zhang, Jinlong

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China; E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China

年份：2014

卷号：136

期号：16

起止页码：5852

外文期刊名：JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

收录：;EI(收录号：20141917689914);WOS:【SCI-EXPANDED(收录号:WOS:000335086100009)】；

基金：This work has been supported by National Nature Science Foundation of China (2013CB632403, 21237003, 21073060, 21203062), National Basic Research Program of China (973 Program, 2010CB732306, 2011CB808505), the Project of International Cooperation of the Ministry of Science and Technology of China (2011DFA50530), the Science and Technology Commission of Shanghai Municipality (12230705000) and sponsored by the Program of Shanghai Subject Chief Scientist (12XD1402200) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Lithium-ion batteries - Aerogels - Nanocrystals - Azo dyes - Electron transport properties - Titanium dioxide - Organic pollutants - Photocatalysts - Solar light - Graphene - Porosity

摘要：TiO2/graphene composites have been well studied as a solar light photocatalysts and electrode materials for lithium-ion batteries (LIBs). Recent reports have shown that ultralight 3D-graphene aerogels (GM) can better adsorb organic pollutants and can provide multidimensional electron transport pathways, implying a significant potential application for photocatalysis and LIBs. Here, we report a simple one-step hydrothermal method toward in situ growth of ultradispersed mesoporous TiO2 nanocrystals with (001) facets on GAs. This method uses glucose as the dispersant and linker owing to its hierarchically porous structure and a high surface area. The TiO2/GAs reported here exhibit a highly recyclable photocatalytic activity for methyl orange pollutant and a high specific capacity in LIBs. The strong interaction between TiO2 and GM, the facet characteristics, the high electrical conductivity, and the three-dimensional hierarchically porous structure of these composites results in highly active photocatalysis, a high rate capability, and stable cycling.