In this work, acid-ached carbon fibers decorated by plasmonic Ag nanoparticles (denoted as Ag NPs/ACFs) were facile fabricated and acted as photocatalyst to convert CO2 into high value-added CH3OH. Such photocatalyst afforded a CH3OH evolution rate of 13.9 μmol g−1 h−1 without any sacrifice reagent under visible light (> 420 nm), which is 2.5 times higher than that of Ag NPs/CFs (5.5 μmol g−1 h−1). This excellent performance is ascribed to the accelerated e−/h+ pairs separation and a strong interaction between Ag NPs and carbon fibers resulted by the generation of more oxygen-containing functional groups on carbon fibers, which is caused by acid acid-aching. This study may provide an important reference for plasmonic photocatalyst in potential photocatalytic applications.
The Ag NPs/ACFs was prepared by acid aching process coupled with an ultrasonic treatment, which behaved a much higher CH3OH yield than Ag NPs/CFs without acid treatment. The increased polarized oxygen-containing functional group and the favorable interaction between Ag NPs and carbon fibers should be responsible for the significant enhancements.
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This work was financially supported by National Natural Science Foundation of China (21908108), Jiangsu Province Scientific and Technological Project (BK20180449), Fundamental Research Funds for the Central Uiversities (30920041108), Top-notch Academic Programs Project of Jiangsu Higher Education Institutions, Open Fund for Large Instruments and Equipments of Nanjing University of Science and Technology.
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Wang, R., Ding, J., Zhong, Q. et al. Plasmonic Ag Nanoparticles Decorated Acid-Aching Carbon Fibers for Enhanced Photocatalytic Reduction of CO2 into CH3OH Under Visible-Light Irradiation. Catal Lett (2021). https://doi.org/10.1007/s10562-021-03554-3
- Plasmonic Ag nanoparticles
- Carbon fibers