Work

Enhanced Catalytic Reduction of 4-Nitrophenol over Porous Silica Nanospheres Encapsulating Pt-SnxOy Hybrid Nanoparticles

Year: 2025

Type: article

Abstract: 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.

Source: Catalysts

DOI: 10.3390/catal15030263

Authors: Kaijie Li, Qin Wang, Qifan Zhao, Hongbo Yu, Hongfeng Yin

Institutions: Chinese Academy of Sciences, Ningbo Institute of Industrial Technology, Ningbo University of Technology, NingboTech University

Language: English

Topic: Nanomaterials for catalytic reactions

Subfield: Organic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,654

Funders: National Natural Science Foundation of China, Natural Science Foundation of Ningbo, National Key Research and Development Program of China