期刊
ACS OMEGA
卷 5, 期 26, 页码 15942-15948出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.0c01169
关键词
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资金
- National Natural Science Foundation of China [21665020]
- Postdoctoral Science Foundation of China [223232]
- Natural Science Foundation of Inner Mongolia Autonomous Region [2018BS02004, 2017MS0203]
- Young Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region [NJYT-20-B20]
- Program of Higher-level Talents of Inner Mongolia Agricultural University [NDYB2016-03]
Methyl formate is widely employed as one of the important organic intermediates in Cl chemistry and as an environmentally benign chemical in the emerging area of green chemistry. We here study the catalytic effectiveness of CuO/TiO2-nanotube nanocomposites for the direct synthesis of methyl formate via methanol photo-oxidation in this paper. The CuO/TiO2-nanotube nanocomposites with 7% CuO weight loading give a promising photocatalytic performance (over 93.3% methanol conversion and 89.4% methyl formate selectivity) at 25 degrees C under 365 nm UV irradiation. The turnover frequency and the apparent quantum efficiency reach up to 22.9 mol(methanol) g(cat)(-1) h(-1) and 57.6% over 7% CuO/TiO2-nanotube, respectively, which is mainly because of the effective minimization of the recombination of photogenerated electrons and holes by the surface ultrasmall-sized CuO particles. Furthermore, these CuO/TiO2-nanotube nanocomposites exhibit excellent durability and robust nature during the catalytic processes of the methanol photo-oxidation to methyl formate. The experimental results demonstrate the promise of the robust CuO/TiO2 nanocomposites for efficient and green production of methyl formate, which may offer guidelines for the design of efficient catalysts for selective alcohol conversion to other valuable chemicals.
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