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Updated: May 6, 2026
The Effect of Interfacial Chemical Bonding in TiO2-SiO2 Composites on Their Photocatalytic NOx Abatement Performance
Published on: July 4, 2017
Ingeniería atómica de la interacción electrónica metal-soporte a través de enlaces Si-O-Co para la purificación
Dingren Ma1, Feng Yuan2, Yongquan He2
1Zhejiang Key Laboratory of Digital Intelligence Monitoring and Restoration of Watershed Environment, College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, Zhejiang 321004, China.
Abstract:
Catalytic ozone decomposition offers a promising approach for controlling ground-level ozone (O3), but conventional Co-based catalysts suffer from poor performance due to nanoparticle agglomeration and limited electronic tunability. This study addresses these limitations by leveraging electronic metal-support interaction (EMSI) to engineer a Co-based catalyst (Cox@SBA-UC) anchored via Si-O-Co bonding on a mesoporous SBA-UC carrier. We demonstrate that the Si-O-Co EMSI structure enhances Co dispersion, stabilizes low-valence Co2+ species, and optimizes electronic properties by upshifting the d-band center. The optimized Co2@SBA-UC catalyst achieves exceptional O3 decomposition efficiency (92% conversion), outperforming control catalysts and exhibiting robust humidity resistance. Mechanistic insights reveal strengthened O3 adsorption and facilitated decomposition into surface oxygen intermediates (*O and *O2), while reversible deactivation caused by *O2 accumulation is efficiently mitigated through thermal regeneration under an inert atmosphere. This work provides a sustainable strategy for catalytic ozone decomposition by simultaneously maximizing active site density and intrinsic activity, advancing environmental remediation technologies for clean air applications.
