期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 221, 期 -, 页码 101-107出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2015.09.027
关键词
Metal-organic frameworks (MOFs); Mesoporous chromium terephthalate MIL-101; Atomic layer deposition (AID); Nickelocene (Ni(Cp)(2)); NiO nanoparticles
类别
资金
- Degree and Research Center (DRC) Program through National Research Council of Science & Technology (NST) - Ministry of Science, ICT and Future Planning
- Korea Research Council for Industrial Science and Technology (ISTK) of the Republic of Korea [B551179-11-03-00]
Mesoporous chromium terephthalate MIL-101 was modified with NiO via atomic layer deposition (ALD) process using bis(cyclopentadienyl)nickel (Ni(Cp)(2)) as a metal precursor and O-2 as an oxidizing agent, respectively. Based on the results of transmission electron microscopy (TEM), N-2 and Ar isotherms, X-ray photoelectron spectroscopy (XPS), and inductively coupled plasma-atomic emission spectroscopy (ICPAES), we show that the deposited NiO nanoparticles were distributed inside internal mesoporous cages as well as on the external surface of MIL-101(Cr). Studies using in situ X-ray photoelectron spectroscopy show that NiO selectively occupied ligand sites without affecting metal sites of MIL-101. The NiO deposition using ALD enhanced thermal stability of MIL-101 compared to that without NiO and provided catalytic activity for CO oxidation, i.e., ALD provided novel chemical functionality to the metal-organic frameworks (MOFs). (C) 2015 Elsevier Inc. All rights reserved.
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