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arXiv · 2202.01360

A Novel Single-Mode Microwave Assisted Synthesis of Metal Oxide as Visible-light Photocatalyst

Kunihiko Katoa·Sebastien Vaucher·Patrik Hoffmann·Yunzi Xin·Takashi Shirai
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Abstract

Visible-light photocatalyst titanium dioxide (TiO2) was successfully prepared via a novel and facile single-mode microwave assisted synthesis process. In this one-step synthesis, Ti as target material selectively oxides in magnetic field throughout rapid heating, whose process requires less energy consumption and short time. In obtained TiO2, self-doping of Ti3+ was confirmed, which makes TiO2 performed sufficient light absorption in visible region with wavelength above 400 nm. Such Ti3+ self-doped TiO2 exhibits much narrower optical bandgap (2.14 eV) to compare with stoichiometric TiO2 (3.0-3.2 eV). The synthesized TiO2 also shows superior photocatalytic activity to commercially available TiO2 towards the degradation of Rhodamine B under visible light irradiation.

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Kunihiko Katoa, Sebastien Vaucher, Patrik Hoffmann, Yunzi Xin, Takashi Shirai. 2022-02-03. A Novel Single-Mode Microwave Assisted Synthesis of Metal Oxide as Visible-light Photocatalyst. https://doi.org/10.1016/j.matlet.2018.09.132

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