Agar-induced hollow porous carbon nanospheres anchored platinum for high-performance hydrogenation. (March 2020)

• Record Type: Journal Article
• Authors: Cai, Bingfeng; Li, Zhijuan; Zhang, Zhenbo; Zhang, Xuebin; Tang, Yawen; Bao, Jianchun
• Is Part Of: Chemosphere. Volume 243(2020)
• Publication Date: 2020-03
• Subjects: Pt nanoparticles -- Carbon nanospheres -- Hollow and porous -- Agar -- Hydrogenation; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2019.125387
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: Hollow porous carbon has attracted a great deal of interest as catalyst-support because of its high surface area, low density and large pore volume. Herein, we develop a layer-by-layer assembly method to effectively load Pt nanoparticles on hollow porous carbon nanospheres (Pt/HPC) through using modified-SiO2 nanospheres as the template and agar as the carbon resource. The gel properties of agar (e.g., sensitivity to temperature and high mechanical strength) makes the Pt nanoparticles well crosslink with carbon, as well as endows the carbon nanospheres with robust stability. The synthesized Pt/HPC was employed as a catalyst in the hydrogenation reduction of rhodamine B (RhB). The catalytic results demonstrate that Pt/HPC is very promising for RhB hydrogenation as compared to commercial Pt/C catalyst. It is proven that such excellent activity of Pt/HPC can be attributed to the combined merits of hollow porous architecture and well combination between HPC and Pt nanoparticles. Graphical abstract: Hollow porous carbon nanospheres embedded Pt NPs was synthesized through an effective layer-by-layer assembly strategy, exhibiting good catalytic activity for the RhB hydrogenation. Image 1 Highlights: Hollow porous carbon nanospheres embedded Pt NPs (Pt/HPC) was prepared by layer-by-layer assembly strategy. This strategy used modified-SiO2 nanospheres as the template and agar as the carbon resource. Pt/HPC is very promising for rhodamine B (RhB) hydrogenation as compared to commercial Pt/C.