NDLI: Dual-dehydrogenation-promoted catalytic oxidation of formaldehyde on alkali-treated Pt clusters at room temperature

Content Provider	Royal Society of Chemistry (RSC)
Author	Nie, Longhui Yu, Jiaguo Jaroniec, Mietek Zhou, Peng
Copyright Year	2015
Abstract	The activity of the Pt catalyst toward room-temperature catalytic oxidation of formaldehyde (HCHO) known as a common indoor air pollutant can be remarkably improved by the addition of some alkali metal salts. The resulting enhancement in the catalytic activity of the Pt catalyst is generally attributed to the introduction of alkali metal ions. Theoretical simulations and experimental studies presented here show that the OH− ions provided by alkali metal salts make a major contribution to the enhanced activity of Pt catalysts toward the room-temperature catalytic oxidation of HCHO instead of additional alkali metal ions. This is because Cl− ions from the Pt precursor (H2PtCl6) are easily chemisorbed on prepared Pt catalysts, leading to their deactivation. The OH− ions provided by some alkali metal salts can effectively substitute surface adsorbed Cl− ions and contribute to the dual dehydrogenation of the HCHO molecule, which promotes the regeneration of Pt catalysts and activation of the O2 molecule. These findings are significant for optimizing the surface structure of Pt catalysts and further preparing high-performance Pt catalysts for room-temperature catalytic oxidation of HCHO.
Starting Page	10432
Ending Page	10438
Page Count	7
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	3
Issue Number	19
Journal	Journal of Materials Chemistry A
DOI	10.1039/c5ta00778j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Formaldehyde Alkali metal Chloroplatinic acid Dehydrogenation Oxygen
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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