文献类型：期刊文献

英文题名：Macroscopic and Mechanically Robust Hollow Carbon Spheres with Superior Oil Adsorption and Light-to-Heat Evaporation Properties

作者：Zhou, Jianguo[1];Sun, Zhenlong[1];Chen, Mingqi[1];Wang, Jitong[1];Qiao, Wenming[1];Long, Donghui[1];Ling, Licheng[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2016

卷号：26

期号：29

起止页码：5368

外文期刊名：ADVANCED FUNCTIONAL MATERIALS

收录：;EI(收录号：20162302453217);WOS:【SCI-EXPANDED(收录号:WOS:000382548000022)】；

基金：J.G.Z. and Z.L.S. contributed equally to this work. This work was partly supported by MOST (2014CB239702), by the National Science Foundation of China (No. 21576090, No. 51302083, No. 51172071), and the Fundamental Research Funds for the Central Universities and Shanghai Rising Star Program (15QA1401300).

语种：英文

外文关键词：Functional materials - Yarn - Evaporation - Phase separation - Phase interfaces - Reinforcement

摘要：Hollow carbon spheres (HCSs) represent a special class of functional materials, to which intense interest has been paid in the fields of materials science and chemistry. A major problem with these materials is the lack of sufficient particle engineering and mechanical strength for practical applications and the difficulty of up-scaling. Herein, we report a general, template-free, phase-separation approach, in which the liquid-liquid phase-inversion process and a gas-foaming process are coupled for the first time, for fast and continuous processing of uniform HCSs. The obtained HCSs have particle sizes on the millimeter scale, and a hierarchical structure with an interpenetrating, open-porous, carbon shell and huge external voids, therefore permitting rapid transport of molecules into, throughout, and out of the hollow structure. By evenly dispersing the CNTs in the precursor solution, CNT-reinforced HCSs can be achieved with significantly enhanced mechanical strength, hydrophobicity, and electronic and thermal properties. The resulting CNT-reinforced HCSs offer a viable route to remove the engine oil from water in a fixed-bed system. Moreover, these floatable HCSs can receive and convert sunlight to heat at the water-air interface, resulting in a great enhancement in solar evaporation rate compared to conventional bulk heating schemes.