张安峰

个人信息Personal Information

副教授

博士生导师

硕士生导师

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:化工学院

学科:工业催化

办公地点:大连理工大学西部校区化工实验楼B223

联系方式:0411-84986484;13591142689

电子邮箱:zhangaf@dlut.edu.cn

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Size- and morphology-controlled NH2-MIL-53(Al) prepared in DMF-water mixed solvents

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论文类型:期刊论文

发表时间:2013-10-07

发表刊物:DALTON TRANSACTIONS

收录刊物:SCIE、EI、PubMed、Scopus

卷号:42

期号:37

页面范围:13698-13705

ISSN号:1477-9226

摘要:We present here a simple solvothermal method to fabricate metal-organic framework NH2-MIL-53(Al) crystals with controllable size and morphology just by altering the ratio of water in the DMF-water mixed solvent system without the addition of any surfactants or capping agents. With increasing the volume ratio of water in the mixed solvents, a series of NH2-MIL-53(Al) crystals with different sizes and morphologies were synthesized. The average size of the smallest crystal is 76 +/- 20 nm, which provides us a simple and environmentally friendly way to prepare nanoscale MOFs. The largest BET surface area of these samples is 1882 m(2) g(-1) that is mainly contributed by its micropore surface area, and its corresponding micropore volume is 0.83 cm(3) g(-1), which have greatly extended its application in the fields of gas adsorption and postsynthetic modification. All these samples were characterized by SEM, XRD, N-2 adsorption/desorption, TGA and FT-IR. Then a mechanism for the impact of the water ratio on the crystal size and morphology is presented and discussed.