Remarkably and stable catalytic activity in reduction of 4-nitrophenol by sodium sesquicarbonate-supporting FeO@Pt

• Published in: RSC advances Vol. 13; no. 2; pp. 13556 - 13563
• Main Authors: Xu, Xia, Li, Mingqiang, Yang, Liming, Hu, Bing
• Format: Journal Article
• Published: 03.05.2023
• ISSN: 2046-2069
• DOI: 10.1039/d3ra01930f

Reasonable design of bimetallic nanomaterials with support is beneficial to improve catalytic performance. This work reports a new kind of sodium sesquicarbonate-supporting Fe 2 O 3 @Pt via etching Fe 3 O 4 @Pt@SiO 2 , which exhibits highly efficient and stable catalytic reduction performance towards 4-NP. Sodium sesquicarbonate-supporting Fe 2 O 3 @Pt has an interconnected one-dimensional network structure that provides sufficient channels for mass transfer. At the same time, a large amount of Fe 2 O 3 @Pt is exposed on its surface, which hinders the aggregation of pt clusters and Fe 2 O 3 nanoparticles, and facilitates the direct contact of Fe 2 O 3 @Pt reaction sites with reactant molecules, thus improving the catalytic rate of 4-NP reduction reaction. Moreover, the introduction of non-metallic Fe can not only reduce the consumption of precious metal Pt, but also improve the catalytic efficiency due to the synergistic effect. This study opens up a new avenue to develop robust catalysts for heterogeneous catalytic reactions. The sodium sesquicarbonate-supporting Fe 2 O 3 @Pt can not only prevent the aggregation of pt clusters and Fe 2 O 3 nanoparticles, but also ensure the synergistic effect between Pt and Fe, and improve the catalytic activity for 4-NP reduction.