Heteroatom doping effect of Pt/rGO catalysts for formaldehyde abatement at ambient temperature

Zhaoying Di; Hanxiao Shen; Yaodong Guo; Xiaonan Guo; Bin Kang; Mengfei Guo; Ying Wei; Jingbo Jia; Runduo Zhang

Chemical Physics Impact (Dec 2022)

Heteroatom doping effect of Pt/rGO catalysts for formaldehyde abatement at ambient temperature

Zhaoying Di,
Hanxiao Shen,
Yaodong Guo,
Xiaonan Guo,
Bin Kang,
Mengfei Guo,
Ying Wei,
Jingbo Jia,
Runduo Zhang

Affiliations

Zhaoying Di: State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, PR China
Hanxiao Shen: State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, PR China
Yaodong Guo: State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, PR China
Xiaonan Guo: State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, PR China
Bin Kang: State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, PR China
Mengfei Guo: State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, PR China
Ying Wei: State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, PR China
Jingbo Jia: State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, PR China
Runduo Zhang: Corresponding author.; State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, PR China

Journal volume & issue: Vol. 5
p. 100103

Abstract

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The effect of doping with different heteroatoms (N, P, S, and F atoms) on physicochemical properties of reduced graphene oxide (rGO) catalysts and their performances on formaldehyde (HCHO) oxidation is investigated in this study. Nitrogen-doped rGO with a loading of 1 wt% Pt (Pt/N-rGO) sample exhibits a superior HCHO conversion of 82% at a gas hourly space velocity (GHSV) of 50,000 mL/(g × h) at ambient temperature. In addition, the Pt/N-rGO catalyst remained an outstanding activity and stability at room temperature after testing continuously for 48 h. A series of characterization results showed that nitrogen-doping significantly increased the defect degree and specific surface area of rGO compared with rGOs doped with other heteroatoms, promoted the dispersion of Pt nanoparticles (NPs), and produced more zero-valent Pt (Pt0). In addition, the average particle size of the Pt NPs in the samples doping with heteroatoms decreased from 36.4 nm to 4.4 nm. Combined with the results of HCHO-DRIFTS, the highly dispersed Pt NPs on the surface of Pt/N-rGO sample was conducive to activate oxygens and further transfer the formate intermediate.

Published in Chemical Physics Impact

ISSN: 2667-0224 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics; Science: Chemistry
Website: https://www.journals.elsevier.com/chemical-physics-impact/

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