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Ozone is a poisonous gas, so it is necessary to remove excessive ozone in the environment. Catalytic decomposition is an effective way to remove ozone at room temperature. In this work, 10%Ag/nano-Al 2 O 3 and 10%Ag/AlOOH-900 catalysts were synthesized by the impregnation method. The 10%Ag/nano-Al 2 O 3 catalyst showed 89% ozone conversion for 40 ppm O 3 for 6 h under a space velocity of 840 000 h -1 and a relative humidity of 65%, which is superior to 10%Ag/AlOOH-900 (45% conversion). The characterization results showed Ag nanoparticles to be the active sites for ozone decomposition, which were more highly dispersed on nano-Al 2 O 3 as a result of the greater density of terminal hydroxyl groups. The understanding of the dispersion and valence of silver species gained in this study will be beneficial to the design of more efficient supported silver catalysts for ozone decomposition in the future.

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Terminal Hydroxyl Groups on Al<sub>2</sub>O<sub>3</sub> Supports Influence the Valence State and Dispersity of Ag Nanoparticles: Implications for Ozone Decomposition

Terminal Hydroxyl Groups on Al2O3 Supports Influence the Valence State and Dispersity of Ag Nanoparticles: Implications for Ozone Decomposition

Terminal Hydroxyl Groups on Al₂O₃ Supports Influence the Valence State and Dispersity of Ag Nanoparticles: Implications for Ozone Decomposition