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Enhancing formaldehyde oxidation on iridium catalysts by hydrogenated TiO2 supports

Abstract

As promising catalyst supports, hydrogenated metal-oxides can afford engineered surface architectures and electronic configurations to promote catalytic turnover on loading metals. Herein, hydrogenated TiO2 (H-TiO2) fabricated via NaBH4 reduction is successfully introduced to boost the catalytic oxidation of formaldehyde (HCHO) that is the most common and harmful indoor volatile organic compounds. Distinguishing from parent TiO2, the H-TiO2 features its enriched surface hydroxyls and enhanced metal-support interactions with loading Ir, which are responsible for the remarkable promotion in HCHO oxidation. Particularly, the abundant hydroxyls on H-TiO2 promote the generation of HCOO-, which is believed as the rate-determined step in HCHO oxidation. This discovery is anticipated to pave the way for exploring high-performance metal catalysts on oxides supports via surface and interfacial engineering.

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Publication details

The article was received on 02 Sep 2018, accepted on 05 Oct 2018 and first published on 05 Oct 2018


Article type: Paper
DOI: 10.1039/C8NJ04472D
Citation: New J. Chem., 2018, Accepted Manuscript
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    Enhancing formaldehyde oxidation on iridium catalysts by hydrogenated TiO2 supports

    H. C. Chan, T. Chen, L. Xie, Y. Shu and Q. Gao, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ04472D

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