期刊
ACS APPLIED NANO MATERIALS
卷 3, 期 11, 页码 11426-11433出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.0c02516
关键词
metal-organic framework; silver nanoparticle; nitrophenol reduction; Lewis acid; catalysis
资金
- NSFC [21520102001, 21521061, 21331006]
- National Key Research and Development Program of China [2017YFD0800900]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB20000000]
- International Science and Technology Cooperation and Exchange Project of Fujian Agriculture and Forestry University [KXGH17010]
Ultrafine silver (Ag) nanoparticles (NPs) were successfully loaded on a robust aluminum (Al) metal-organic framework (MOF), NOTT-300(Al), by means of a double-solvent method (DSM), and the construction of Ag@NOTT-300(Al) composites led to a highly efficient catalytic reduction of nitrophenols in these hybrid systems. Of not; the catalytic activity of Ag@NOTT-300(Al) was used as a heterogeneous catalyst for the reduction of 4-nitrophenol (4-NP) with a reaction rate constant (k) of 2.67 min(-1) and activation energy (E-a) of ca. 29.7 kJ mol(-1). Kinetics and thermodynamics of catalytic 4-NP reduction in this current system complied with the Langmuir-Hinshelwood mechanism. Moreover, the combined use of ultrafine Ag-0 NPs and porous NOTT-300(Al) supports favored reactants diffusion while accelerating the reduction of 4-NP.
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