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,

*^a Stelios Gavrielides,

^a Meltiani Belekoukia,

^a Warren A. Thompson,

^a Leila Negahdar,

^bc Fang Xia,^d M. Mercedes Maroto-Valer

^a and Andrew M. Beale

^bc

Author affiliations

* Corresponding authors

^a Research Centre for Carbon Solutions (RCCS), Heriot-Watt University, Edinburgh EH14 4AS, UK
E-mail: j.tan@hw.ac.uk

^b Department of Chemistry, UCL, 20 Gordon Street, London, UK

^c UK Catalysis Hub, Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell, Oxfordshire, UK

^d College of Science, Health, Engineering and Education, Murdoch University, Murdoch, Western Australia 6150, Australia

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.

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Article information

DOI: https://doi.org/10.1039/D0CC04036C
Article type: Communication
Submitted: 12 Jun 2020
Accepted: 26 Aug 2020
First published: 27 Aug 2020
This article is Open Access

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Chem. Commun., 2020,56, 12150-12153

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

J. Z. Y. Tan, S. Gavrielides, M. Belekoukia, W. A. Thompson, L. Negahdar, F. Xia, M. M. Maroto-Valer and A. M. Beale, Chem. Commun., 2020, 56, 12150 DOI: 10.1039/D0CC04036C

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Chemical Communications

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

Abstract

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

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