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Issue 22, 2018
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Enhancing formaldehyde oxidation on iridium catalysts using hydrogenated TiO2 supports

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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), which is one of the most common and harmful indoor volatile organic compounds. Distinct from the parent TiO2, H-TiO2 features enriched surface hydroxyls and enhanced metal–support interactions upon loading Ir, which are responsible for remarkable promotion in HCHO oxidation. In particular, the abundant hydroxyls on H-TiO2 promote the generation of HCOO, which is believed to be the rate-determining step in HCHO oxidation. This discovery is anticipated to pave the way for exploring high-performance metal catalysts on oxide supports via surface and interfacial engineering.

Graphical abstract: Enhancing formaldehyde oxidation on iridium catalysts using hydrogenated TiO2 supports

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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., 2018,42, 18381-18387
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    Enhancing formaldehyde oxidation on iridium catalysts using hydrogenated TiO2 supports

    H. C. Chan, T. Chen, L. Xie, Y. Shu and Q. Gao, New J. Chem., 2018, 42, 18381
    DOI: 10.1039/C8NJ04472D

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