Synthesis of TiO2-x/W18O49 hollow double-shell and core-shell microspheres for CO2 photoreduction under visible light

Jeannie Z. Y. Tan; Stelios Gavrielides; Meltiani Belekoukia; Warren A. Thompson; Leila Negahdar; Fang Xia; M. Mercedes Maroto-Valer; Andrew M. Beale

doi:10.1039/d0cc04036c

Synthesis of TiO_2-x/W₁₈O₄₉ hollow double-shell and core-shell microspheres for CO₂ photoreduction under visible light

Jeannie Z. Y. Tan, Stelios Gavrielides, Meltiani Belekoukia, Warren A. Thompson, Leila Negahdar, Fang Xia, M. Mercedes Maroto-Valer, Andrew M. Beale

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Abstract

TiO_2-x/W₁₈O₄₉ with core-shell or double-shelled hollow microspheres were synthesized through a facile multi-step solvothermal method. The formation of the hollow microspheres with a double-shell was a result of the Kirkendall effect during the solvothermal treatment with concentrated NaOH. The advanced architecture significantly enhanced the electronic properties of TiO_2-x/W₁₈O₄₉, improving by more than 30 times the CO₂ photoreduction efficiency compared to the pristine W₁₈O₄₉. Operando DRIFTS measurements revealed that the yellow TiO_2-x was a preferable CO₂ adsorption and conversion site.

Original language	English
Pages (from-to)	12150-12153
Number of pages	4
Journal	Chemical Communications
Volume	56
Issue number	81
Early online date	27 Aug 2020
DOIs	https://doi.org/10.1039/d0cc04036c
Publication status	Published - 18 Oct 2020

ASJC Scopus subject areas

Catalysis
Electronic, Optical and Magnetic Materials
Ceramics and Composites
General Chemistry
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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title = "Synthesis of TiO2-x/W18O49 hollow double-shell and core-shell microspheres for CO2 photoreduction under visible light",

abstract = "TiO2-x/W18O49 with core-shell or double-shelled hollow microspheres were synthesized through a facile multi-step solvothermal method. The formation of the hollow microspheres with a double-shell was a result of the Kirkendall effect during the solvothermal treatment with concentrated NaOH. The advanced architecture significantly enhanced the electronic properties of TiO2-x/W18O49, improving by more than 30 times the CO2 photoreduction efficiency compared to the pristine W18O49. Operando DRIFTS measurements revealed that the yellow TiO2-x was a preferable CO2 adsorption and conversion site.",

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AU - Tan, Jeannie Z. Y.

AU - Gavrielides, Stelios

AU - Belekoukia, Meltiani

AU - Thompson, Warren A.

AU - Negahdar, Leila

AU - Xia, Fang

AU - Maroto-Valer, M. Mercedes

AU - Beale, Andrew M.

PY - 2020/10/18

Y1 - 2020/10/18

N2 - TiO2-x/W18O49 with core-shell or double-shelled hollow microspheres were synthesized through a facile multi-step solvothermal method. The formation of the hollow microspheres with a double-shell was a result of the Kirkendall effect during the solvothermal treatment with concentrated NaOH. The advanced architecture significantly enhanced the electronic properties of TiO2-x/W18O49, improving by more than 30 times the CO2 photoreduction efficiency compared to the pristine W18O49. Operando DRIFTS measurements revealed that the yellow TiO2-x was a preferable CO2 adsorption and conversion site.

AB - TiO2-x/W18O49 with core-shell or double-shelled hollow microspheres were synthesized through a facile multi-step solvothermal method. The formation of the hollow microspheres with a double-shell was a result of the Kirkendall effect during the solvothermal treatment with concentrated NaOH. The advanced architecture significantly enhanced the electronic properties of TiO2-x/W18O49, improving by more than 30 times the CO2 photoreduction efficiency compared to the pristine W18O49. Operando DRIFTS measurements revealed that the yellow TiO2-x was a preferable CO2 adsorption and conversion site.

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JO - Chemical Communications

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Synthesis of TiO_2-x/W₁₈O₄₉ hollow double-shell and core-shell microspheres for CO₂ photoreduction under visible light

Abstract

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