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Black indium oxide a photothermal CO2 hydrogenation catalyst.

ABSTRACT: Nanostructured forms of stoichiometric In2O3 are proving to be efficacious catalysts for the gas-phase hydrogenation of CO2. These conversions can be facilitated using either heat or light; however, until now, the limited optical absorption intensity evidenced by the pale-yellow color of In2O3 has prevented the use of both together. To take advantage of the heat and light content of solar energy, it would be advantageous to make indium oxide black. Herein, we present a synthetic route to tune the color of In2O3 to pitch black by controlling its degree of non-stoichiometry. Black indium oxide comprises amorphous non-stoichiometric domains of In2O3-x on a core of crystalline stoichiometric In2O3, and has 100% selectivity towards the hydrogenation of CO2 to CO with a turnover frequency of 2.44?s-1.

SUBMITTER: Wang L

PROVIDER: S-EPMC7229034 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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Black indium oxide a photothermal CO2 hydrogenation catalyst.

Wang Lu L Dong Yuchan Y Yan Tingjiang T Hu Zhixin Z Ali Feysal M FM Meira Débora Motta DM Duchesne Paul N PN Loh Joel Yi Yang JYY Qiu Chenyue C Storey Emily E EE Xu Yangfan Y Sun Wei W Ghoussoub Mireille M Kherani Nazir P NP Helmy Amr S AS Ozin Geoffrey A GA

Nature communications 20200515 1

Nanostructured forms of stoichiometric In2O3 are proving to be efficacious catalysts for the gas-phase hydrogenation of CO2. These conversions can be facilitated using either heat or light; however, until now, the limited optical absorption intensity evidenced by the pale-yellow color of In2O3 has prevented the use of both together. To take advantage of the heat and light content of solar energy, it would be advantageous to make indium oxide ...[more]

PMID: 32415078

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