Room temperature CO oxidation catalysed by supported Pt nanoparticles revealed by solid-state NMR and DNP spectroscopy?
Catalysis Science & Technology Pub Date: 2019-06-25 DOI: 10.1039/C9CY00684B
Abstract
A series of 1 and 2 nm sized platinum nanoparticles (Pt-NPs) deposited on different support materials, namely, γ-alumina (γ-Al2O3), titanium dioxide (TiO2), silicon dioxide (SiO2) and fumed silica are investigated by solid-state NMR and dynamic nuclear polarization enhanced NMR spectroscopy (DNP). DNP signal enhancement factors up to 170 enable gaining deeper insight into the surface chemistry of Pt-NPs. Carbon monoxide is used as a probe molecule to analyze the adsorption process and the surface chemistry on the supported Pt-NPs. The studied systems show significant catalytic activity in carbon monoxide oxidation on their surface at room temperature. The underlying catalytic mechanism is the water–gas shift reaction. In the case of alumina as the support the produced CO2 reacts with the surface to form carbonate, which is revealed by solid-state NMR. A similar carbonate formation is also observed when physical mixtures of neat alumina with silica, fumed silica and titania supported Pt-NPs are studied.
Recommended Literature
- [1] Enabling stable MnO2 matrix for aqueous zinc-ion battery cathodes? Yiding Jiao,Liqun Kang,Jasper Berry-Gair,Kit McColl,Jianwei Li,Haobo Dong,Hao Jiang,Ryan Wang,Furio Corà,Dan J. L. Brett,Ivan P. ParkinJ. Mater. Chem. A, 2020,8, 22075-22082 10.1039/D0TA08638J
- [2] Fe(iii)-mediated isomerization of α,α-diarylallylic alcohols to ketones via radical 1,2-aryl migration? Ziyang Deng,Changwei Chen,Sunliang CuiRSC Adv., 2016,6, 93753-93755 10.1039/C6RA20007A
- [3] Fast synthesis of copper nanoclusters through the use of hydrogen peroxide additive and their application for the fluorescence detection of Hg2+ in water samples? Liao Xiaoqing,Li Ruiyi,Li Zaijun,Sun Xiulan,Wang Zhouping,Liu JunkangNew J. Chem., 2015,39, 5240-5248 10.1039/C5NJ00831J
- [4] Evolution study of photo-synthesized gold nanoparticles by spectral deconvolution model: a quantitative approach Chung-Sung Yang,Mong-Shian Shih,Fang-Yi ChangNew J. Chem., 2006,30, 729-735 10.1039/B516465F
- [5] Fc microparticles can modulate the physical extent and magnitude of complement activity? David White,Sean R. StowellBiomater. Sci., 2017,5, 463-474 10.1039/C6BM00608F
- [6] Fate of single walled carbon nanotubes in wetland ecosystems? Joseph H. Bisesi,Tara Sabo-AttwoodEnviron. Sci.: Nano, 2014,1, 574-583 10.1039/C4EN00063C
- [7] Excimer formation effects and trap-assisted charge recombination loss channels in organic solar cells of perylene diimide dimer acceptors? Min Kim,Jae-Joon Lee,Tengling Ye,Panagiotis E. Keivanidis,Kilwon ChoJ. Mater. Chem. C, 2020,8, 1686-1696 10.1039/C9TC04955J
- [8] Estimates of hydride ion stability in condensed systems: energy of formation and solvation in aqueous and polar-organic solvents Craig A. Kelly,David R. RosseinskyPhys. Chem. Chem. Phys., 2001,3, 2086-2090 10.1039/B010092G
- [9] Excess electrons in lithium–ethylamine solutions—density, electrical conductivity and EPR studies Phys. Chem. Chem. Phys., 1999,1, 3561-3565 10.1039/A900683D
- [10] Evidence of CO2 molecule acting as an electron acceptor on a nanoporous metal–organic-framework MIL-53 or Cr3+(OH)(O2C–C6H4–CO2)? Alexandre Vimont,Arnaud Travert,Philippe Bazin,Jean-Claude Lavalley,Marco Daturi,Christian Serre,Gérard Férey,Sandrine Bourrelly,Philip L. LlewellynChem. Commun., 2007, 3291-3293 10.1039/B703468G
Journal Name：Catalysis Science & Technology
research_products
-
CAS no.: 89640-58-4
![N-(3-cyanothiolan-3-yl)-2-[(2,2,2-trifluoroethyl)sulfanyl]pyridine-4-carboxamide](https://ossimg.kuujia.com/scimg/1444500/1444113-98-7x500.png)
![1,2,3,4,5,6-Hexahydro-[2,3]bipyridinyl-6-ol](https://ossimg.kuujia.com/scimg/1271000/1270529-38-8x500.png)
![2,2-Difluoro-3-[methyl(2-methylbutyl)amino]propanoic acid](https://ossimg.kuujia.com/scimg/2138500/2138166-62-6x500.png)
![2-(1H-indol-3-yl)-N-{[6-(thiophen-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl]methyl}acetamide](https://ossimg.kuujia.com/scimg/2034500/2034271-14-0x500.png)