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Yao, Zhenhua, Li, Lei, Liu, Xuguang, Hui, Kwun Nam, Shi, Ling, Zhou, Furong, Hu, Maocong and Hui, K. S. 
ORCID: https://orcid.org/0000-0001-7089-7587
(2021)
Mechanistic insights into NO-H2 reaction over Pt/boron-doped graphene catalyst.
Journal of Hazardous Materials, 406.
ISSN 0304-3894
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Abstract
This work presents a systematical experimental and density functional theory (DFT) studies to reveal the mechanism of NO reduction by H 2 reaction over platinum nanoparticles (NPs) deposited on boron-doped graphene (denoted as Pt/BG) catalyst. Both characterizations and DFT calculations identified boron (in Pt/BG) as an additional NO adsorption site other than the widely recognized Pt NPs. Moreover, BG led to a decrease of Pt NPs size in Pt/BG, which facilitated hydrogen spillover. The mathematical and physical criteria of the Langmuir-Hinshelwood dual-site kinetic model over the Pt/BG were satisfied, indicating that adsorbed NO on boron (in Pt/BG) was further activated by H-spillover. On the other hand, Pt/graphene (Pt/Gr) demonstrated a typical Langmuir-Hinshelwood single-site mechanism where Pt NPs solely served as active sites for NO adsorption. This work helps understand NO-H 2 reaction over Pt/BG and Pt/Gr catalysts in a closely mechanistic view and provides new insights into roles of active sites for improving the design of catalysts for NO abatement.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | dft study,graphene-based catalysis,kinetic modeling,langmuir−hinshelwood dual-site mechanism,no abatement,environmental engineering,environmental chemistry,waste management and disposal,pollution,health, toxicology and mutagenesis ,/dk/atira/pure/subjectarea/asjc/2300/2305 |
| Faculty \ School: | Faculty of Science > School of Engineering (former - to 2024) |
| UEA Research Groups: | Faculty of Science > Research Groups > Emerging Technologies for Electric Vehicles (former - to 2024) Faculty of Science > Research Groups > Energy Materials Laboratory |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 21 Oct 2020 23:56 |
| Last Modified: | 11 Nov 2024 00:53 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/77398 |
| DOI: | 10.1016/j.jhazmat.2020.124327 |
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