Published: Jan. 1, 2023

Light-assisted thermocatalytic dry reforming of ethanol (EDR) utilizing the synergistic effect photocatalysis and thermocatalysis is regarded as a promising route to convert greenhouse gas CO2 into value-added chemicals. In this work, double-shell NiZnOx hollow microspheres (NiZnOx-M) were synthesized light-harvesting catalyst enhance EDR performance under mild conditions. The characterization results (UV-vis-NIR, PL) indicated that band gap energy NiZnOx-M was narrower because smaller Ni nanoparticles, thereby broadening its optical response range especially in visible light. strong absorbance light could greatly improve activation ethanol/CO2 gasification carbon. With irradiation, induce transfer photogenerated electron from semiconductor ZnO active metal Ni, reducing reaction barrier. Hence, showed superior photothermal catalytic activity along with good resistance capacity coke accumulation aggregation metal. Ethanol conversion ca.2 times those obtained over NiZnOx-C prepared by conventional precipitation method. No obvious deactivation occurred after 100 h tests. This work provides some guidance for design high-performance achieve photo-thermal-chemical gases.

Language: Английский