TY - JOUR
T1 - Interstitial carbon-platinum electronic metal-support interaction structure boost synergistic removal of O3 and CH3SH via surface atomic oxygen
AU - Ma, Dingren
AU - Cao, Jing
AU - Liu, Kairui
AU - Zhang, Yexing
AU - Liang, Qiwen
AU - Huang, Yajing
AU - Guan, Xinyi
AU - Hu, Lingling
AU - He, Chun
AU - Xia, Dehua
N1 - KAUST Repository Item: Exported on 2023-03-15
Acknowledgements: This work was supported by the National Natural Science Foundation of China (Nos. 21876212, 21976214, 41603097, 21673086, 52070195), Guangdong Basic and Applied Basic Research Foundation (2022B1515020097, 2019A1515011015, 2021A1515110224), Opening Fund of the State Key Laboratory of Environmental Geochemistry (SKLEG2022221), the Science and Technology Program of Guangzhou (201904010353) and Fundamental Research Funds for the Central Universities, Sun Yat-sen University (13lgjc10, 19lgpy157, 22lgqb21) for financially supporting this work.
PY - 2023/3/6
Y1 - 2023/3/6
N2 - Carbon atoms in the interstitial sites of metal nanoparticles have strong influence on heterogeneous catalysis via electronic metal-support interactions (EMSI). Here, the Pt catalysts with interstitial C-Pt EMSI structures were first developed and identified to boost the removal of ozone (O3) and methyl mercaptan (CH3SH). Experimental results showed that the intrinsic activity of the catalysts with low Pt loading (wt%, 0.95 %) was 186 times higher than that of commercial MnO2. This excellent catalytic performance was attributed to dual-site catalytic structures to promote the adsorption/activation of O3 at interstitial C and capture/oxidation of CH3SH at Pt simultaneously. More importantly, the interstitial C sites retained surface atomic oxygen (*O) with excellent reactivity and lowered the energy barrier of C–S bond breakage, thus achieving efficient decomposition of CH3SH into CO2/SO4 2-. This work provides high-performance catalysts and new mechanistic insights for the synergistic control of O3 and CH3SH.
AB - Carbon atoms in the interstitial sites of metal nanoparticles have strong influence on heterogeneous catalysis via electronic metal-support interactions (EMSI). Here, the Pt catalysts with interstitial C-Pt EMSI structures were first developed and identified to boost the removal of ozone (O3) and methyl mercaptan (CH3SH). Experimental results showed that the intrinsic activity of the catalysts with low Pt loading (wt%, 0.95 %) was 186 times higher than that of commercial MnO2. This excellent catalytic performance was attributed to dual-site catalytic structures to promote the adsorption/activation of O3 at interstitial C and capture/oxidation of CH3SH at Pt simultaneously. More importantly, the interstitial C sites retained surface atomic oxygen (*O) with excellent reactivity and lowered the energy barrier of C–S bond breakage, thus achieving efficient decomposition of CH3SH into CO2/SO4 2-. This work provides high-performance catalysts and new mechanistic insights for the synergistic control of O3 and CH3SH.
UR - http://hdl.handle.net/10754/690323
UR - https://linkinghub.elsevier.com/retrieve/pii/S0926337323002217
UR - http://www.scopus.com/inward/record.url?scp=85149456904&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2023.122578
DO - 10.1016/j.apcatb.2023.122578
M3 - Article
SN - 0926-3373
VL - 329
SP - 122578
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
ER -