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Engineering rGO nanosheets-adsorption layer supported Pt nanoparticles to enhance photo-thermal catalytic activity under light irradiation

Abstract

The direct converting renewable clean solar energy into heat to drive various catalytic reactions, e.g., oxidative degradation of volatile organic compounds is highly desirable but remains challenging because of its low efficiency. In this work, Pt-decorated rGO nanosheets-adsorption layer is rationally fabricated to achieve highly selective conversion of gaseous toluene to carbon dioxide under light irradiation. Specifically, its maximum photo-thermal conversion efficiency is able to reach 17.6% with a significant toluene conversion of 98% and CO2 yield of 96% under 146 mW/cm2 infrared light irradiation, together with excellent stability of nearly 45 h, much superior to that of the previous reported catalyst of Pt-rGO-TiO2. The comparison characterizations evidence that such excellent performance is predominantly attributed to synergistic effects of ultrabroadband strong IR light absorption, efficient light-to-heat conversion, well dispersed active Pt nanoparticles and strong reactant adsorption capacity with light irradiation. This work highlights that rGO nanosheets-adsorption layer directs light harnessing, Pt nanoparticles dispersion and reactant adsorption, which shows great promise for redox reactions through photo-thermal effect. It is anticipated that this study would provide insight into the design of more energy-efficient catalysts with a significant utilization of solar energy.

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Publication details

The article was received on 05 Jan 2019, accepted on 09 Apr 2019 and first published on 10 Apr 2019


Article type: Paper
DOI: 10.1039/C9TA00148D
Citation: J. Mater. Chem. A, 2019, Accepted Manuscript

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    Engineering rGO nanosheets-adsorption layer supported Pt nanoparticles to enhance photo-thermal catalytic activity under light irradiation

    J. Li, S. Cai, X. Chen, D. Yan, J. Chen and H. Jia, J. Mater. Chem. A, 2019, Accepted Manuscript , DOI: 10.1039/C9TA00148D

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