Salt-Induced Phase Separation to Synthesize Ordered Mesoporous Carbon by pH-Controlled Self-Assembly | |
Duan YX(段有新)1,2; Pan FP(潘富平)1; Liu Q(刘乔)3; Zhou Y(周妍)1; Liang AM(梁爱民)1; Zhang JY(张俊彦)1 | |
刊名 | Journal of Physical Chemistry C |
2017 | |
卷号 | 121期号:2页码:1243-1248 |
ISSN号 | 1932-7447 |
通讯作者 | 梁爱民 ; 张俊彦 |
英文摘要 | Self-assemly of block copolymers (BCPs) and phenolic resin (PR) is an important method to prepare ordered mesoporous polymers (OMPs) and carbon materials (OMCs). In the process, phase separation of the BCP–PR composite is a critical step which is, however, time-consuming in aqueous solution. Here we report, for the first time, a new salt-induced phase separation strategy to achieve this goal. Triblock copolymer F127 and phenol-formaldehyde resin (PF) are used as the template and precursor, respectively, and sodium chloride (NaCl) is applied to induce the coagulation and phase separation of the F127–PF composite which is transformed to be OMC at high temperature. It is found that the maintenance of the ordered mesostructure is highly dependent on the pH of the F127–PF solution under NaCl interference. A hypothetical mechanism is proposed to explain the role of pH in the formation of ordered mesostructure when salt is introduced into the self-assembly system. The effects of pH, salt concentration, and varied salts on the structures and properties of the as-prepared OMCs are investigated in detail. The new salt-induced phase separation strategy can synthesize OMC facilely and can provide a new insight into understanding the process of preparing ordered mesoporous materials by self-assembly more deeply. |
学科主题 | 材料科学与物理化学 |
收录类别 | SCI |
资助信息 | the National Key Basic Research and Development (973) Program of China (Grant No. 2013CB632300);the National Natural Science Foundation of China (Grant No. 51275508) |
语种 | 英语 |
WOS记录号 | WOS:000392554000029 |
内容类型 | 期刊论文 |
源URL | [http://210.77.64.217/handle/362003/21296] |
专题 | 兰州化学物理研究所_先进润滑与防护材料研究发展中心 兰州化学物理研究所_固体润滑国家重点实验室 |
作者单位 | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Ningbo Univ Technol, Sch Mat Sci & Engn, Ningbo 315016, Zhejiang, Peoples R China |
推荐引用方式 GB/T 7714 | Duan YX,Pan FP,Liu Q,et al. Salt-Induced Phase Separation to Synthesize Ordered Mesoporous Carbon by pH-Controlled Self-Assembly[J]. Journal of Physical Chemistry C,2017,121(2):1243-1248. |
APA | Duan YX,Pan FP,Liu Q,Zhou Y,Liang AM,&Zhang JY.(2017).Salt-Induced Phase Separation to Synthesize Ordered Mesoporous Carbon by pH-Controlled Self-Assembly.Journal of Physical Chemistry C,121(2),1243-1248. |
MLA | Duan YX,et al."Salt-Induced Phase Separation to Synthesize Ordered Mesoporous Carbon by pH-Controlled Self-Assembly".Journal of Physical Chemistry C 121.2(2017):1243-1248. |
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