Enhanced Catalytic Reduction of 4-Nitrophenol over Porous Silica Nanospheres Encapsulating Pt-SnxOy Hybrid Nanoparticles
In this article, Pt-SnxOy hybrid nanoparticles encaged in porous silica nanospheres (Pt-SnxOy@PSNs) were prepared by using 1-dodecanethiol (C12-SH) as a coordination agent to confine Pt and Sn ions in a microemulsion system, which is formed by cetyltrimethylammonium bromide (CTAB) and C12-SH as co-surfactants in water. Compared with Pt@PSNs, when different molar ratios of SnxOy were introduced into Pt@PSNs to form Pt-SnxOy@PSNs, the catalytic efficiency of 4-nitrophenol (4-NP) reduction with NaBH4 can be significantly enhanced. At molar ratios of 4-NP/Pt of 150/1, the 4-NP conversion reached 100% over Pt-SnxOy@PSNs with Pt/Sn molar ratios of 1/0.75 in 8 min. This catalytic performance showed a slight decrease after six reaction cycles. This enhanced catalytic efficiency can be ascribed to the synergistic effect between Pt and SnxOy, and the protection of porous silica nanostructures can effectively improve the stability of the catalyst.
Authors
- Hongfeng Yin
- Hongbo Yu (ORCID: https://orcid.org/0000-0002-6808-1244)
- Kaijie Li (ORCID: https://orcid.org/0009-0005-0681-5512)
- Qifan Zhao (ORCID: https://orcid.org/0000-0002-6764-0489)
- Qin Wang (ORCID: https://orcid.org/0000-0002-8384-7703)
Institutions
- Ningbo University of Technology (CN)
- Chinese Academy of Sciences (CN)
- Ningbo Institute of Industrial Technology (CN)
Publication Details
- Journal
- Catalysts
- Published
- 2025-03-11
- DOI
- https://doi.org/10.3390/catal15030263
- Citations
- 1
- Primary Topic
- Nanomaterials for catalytic reactions
- Type
- article
- Field-Weighted Citation Impact
- 0.94
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Ningbo
- National Key Research and Development Program of China