首页|Fe(III)-Pt(II) oxide-co-sensitized brookite TiO2 nanorods for photocatalytic degradation of acetaldehyde under visible light
Fe(III)-Pt(II) oxide-co-sensitized brookite TiO2 nanorods for photocatalytic degradation of acetaldehyde under visible light
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NSTL
Elsevier
? 2022 Elsevier B.V.Platinum is widely investigated as co-catalysts for photocatalytic degradation of volatile organic compounds but studies seldom focus on their visible light sensitizing properties. Herein, Pt sensitizers of different oxidation states (0, II, IV) were modified on brookite TiO2 nanorods and investigated for acetaldehyde degradation under visible light. Pt(II) oxide/TiO2 showed the best photocatalytic activity but its stability was compromised by its self-oxidation to Pt(IV) during photo-oxidation reaction. Surface modification of an Fe(III) oxide thin film sensitizer layer around the Pt(II) oxide sensitizer was found to enhance both the stability and activity of Pt(II) oxide/TiO2. In situ double beam photoacoustic spectroscopy (DB-PAS) supported by DFT modeling showed the rapid injection of photoexcited electrons from Fe(III) oxide to Pt(II) oxide promote the stability of Pt(II) oxide, leading to enhanced performance. The findings provide guidance for the rational design of visible light-active metal oxide sensitizers for oxidative removal of indoor air pollutants.
Fe oxide sensitizerIndoor VOCs degradationPt oxide sensitizerTiO2Visible light sensitizers
Cao Y.、Murakami N.、Ohno T.、Lou S.N.、Yang H.、Wang S.、Wang C.、Zhang Q.
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Department of Applied Chemistry Section Faculty of Engineering Kyushu Institute of Technology
Division of Environmental Science and Engineering Pohang University of Science and Technology (POSTECH)
School of Chemistry and Chemical Engineering Yangzhou University
College of Chemistry and Chemical Engineering Jiangsu Key Laboratory of Environmental Engineering and Monitoring Yangzhou University
International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale Optoelectronics Shenzhen University
NSTL
Elsevier
