Size-Activity Relationship of TiO2-Supported Pt Nanoparticles in Hydrogenation Reactions
Quantitative assessments of the geometric influence on catalytic activity are crucial for catalyst design and understanding reaction mechanisms. In this study, we synthesized a series of catalysts comprising TiO2-supported Pt nanoparticles with varying particle sizes, which were systematically evaluated in representative hydrogenation reactions. A consistent size–activity relationship is established, wherein overall turnover frequency (TOF) values (TOFoverall: calculated as moles of reactant converted per mole of Pt per hour) are modeled as functions of the average diameter of the supported Pt particles, yielding slope values consistently near −1 across a variety of common substrates. This finding underscores that catalytic activity predominantly originates from surface sites on the Pt nanoparticles rather than from interfacial, edge, or corner active sites.
Authors
- Wei Zhou (ORCID: https://orcid.org/0000-0002-8004-3996)
- Xiang‐Ting Min (ORCID: https://orcid.org/0000-0001-5400-4216)
- Xiao Hu (ORCID: https://orcid.org/0000-0003-1128-4099)
- Zhong‐Hai Ni (ORCID: https://orcid.org/0000-0002-8706-2583)
- Rui Feng (ORCID: https://orcid.org/0000-0003-1971-281X)
- Tianbo Li (ORCID: https://orcid.org/0009-0003-1750-3894)
- Xinlong Yan (ORCID: https://orcid.org/0000-0003-0602-118X)
- Yangyang Li (ORCID: https://orcid.org/0000-0003-4469-0659)
- Qi Zhang (ORCID: https://orcid.org/0000-0002-7725-8320)
- Qian Zhang (ORCID: https://orcid.org/0000-0002-9187-4277)
- Feifei Yang (ORCID: https://orcid.org/0000-0002-8414-6116)
- Shuxian Li (ORCID: https://orcid.org/0000-0002-3159-840X)
- Xunzhu Jiang
- Botao Qiao (ORCID: https://orcid.org/0000-0001-6351-455X)
Institutions
- Dalian Institute of Chemical Physics (CN)
- Chinese Academy of Sciences (CN)
- China University of Mining and Technology (CN)
Publication Details
- Journal
- Inorganics
- Published
- 2025-06-06
- DOI
- https://doi.org/10.3390/inorganics13060186
- Citations
- 1
- Primary Topic
- Nanomaterials for catalytic reactions
- Type
- article
- Field-Weighted Citation Impact
- 0.94
Funders
- National Natural Science Foundation of China
- Government of Jiangsu Province
- National Key Research and Development Program of China