Doping SnO2 with metal ions of varying valence states: discerning the importance of active surface oxygen species vs. acid sites for C3H8 and CO oxidation

Yan, Haiming; Liu, Teng; Lv, Yu; Xu, Xianglan; Xu, Junwei; Fang, Xiuzhong; Wang, Xiang

doi:10.1039/d3cp05840a

Cited by 4 publications

(2 citation statements)

References 69 publications

(117 reference statements)

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“…37 Apart from intrinsic redox properties, surface acidity plays a pivotal role in catalytic performance, as VOCs/CO molecule adsorption is intimately associated with surface acidity. 38 Constructing acidic sites facilitates the efficient adsorption and activation of basic VOCs, such as nitrogencontaining VOCs. Bro̷ nsted basic sites, for instance, expedite αmethyl hydrogen (C-H) abstraction during C 3 H 6 oxidation via the MvK mechanism.…”

Section: Surface/interface Regulation Strategymentioning

confidence: 99%

“…Thus, the catalyst design strategies focus on enhancing oxygen vacancy generation, lattice oxygen storage/release, and transition metal oxide migration capabilities . Apart from intrinsic redox properties, surface acidity plays a pivotal role in catalytic performance, as VOCs/CO molecule adsorption is intimately associated with surface acidity . Constructing acidic sites facilitates the efficient adsorption and activation of basic VOCs, such as nitrogen-containing VOCs.…”

Section: Surface/interface Regulation Strategymentioning

confidence: 99%

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The Surface/Interface Modulation of Platinum Group Metal (PGM)-Free Catalysts for VOCs and CO Catalytic Oxidation

Fang,

Yang,

Pan

2024

ACS Appl. Mater. Interfaces

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Effective management of volatile organic compounds (VOCs) and carbon monoxide (CO) is critical to human health and the ecological environment. Catalytic oxidation is one of the most promising technologies for achieving efficient VOCs and CO emission control. Platinum group metal (PGM)-free catalysts are recently receiving sustainable attention in catalyzing VOCs and CO removal due to their low cost, superior catalytic activity, and excellent stability, but PGM-free catalysts face challenges in lowtemperature catalytic efficiency. In this mini-review, starting with discussing the catalytic mechanism of VOCs and CO oxidation, we summarize the surface/interface modulation strategies of PGM-free catalysts to promote oxygen and VOCs/CO molecule activation for enhanced low-temperature oxidation activity, including oxygen vacancy engineering, heteroatom doping, surface acidity modification, and active interface construction. We highlight the currently remaining challenges and prospects of advanced PGM-free catalyst development for highly efficient VOCs and CO emission control in practical applications.

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Section: Surface/interface Regulation Strategymentioning

confidence: 99%

Section: Surface/interface Regulation Strategymentioning

confidence: 99%