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Enhanced catalytic activity and stability of Pt nanoparticles by surface coating of nanosized graphene oxide for hydrogen production from hydrolysis of ammonia–borane

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Abstract

We report the electronic modification of silica supported Pt nanoparticles (SiO2@Pt) by coating a 1 nm thin layer of nanosized graphene oxide (NGO). The resulting SiO2@Pt@NGO showed much enhanced catalytic activity and stability for hydrogen production from hydrolysis of ammonia–borane compared with SiO2@Pt and graphene supported Pt nanoparticles, with an impressive initial TOF value reaching 324.6 molH2 molPt−1 min−1. Detailed characterization by means of HRTEM and EDS elemental mapping proved the structural correctness of SiO2@Pt@NGO. The XPS results showed that the binding energy of Pt0 4f7/2 in SiO2@Pt@NGO was 71.12 eV slightly higher than 70.84 eV of Pt0 4f7/2 in SiO2@Pt, indicating more electron-deficient Pt atoms after the interaction with NGO, which may be responsible for the enhanced catalytic performance.

Graphical abstract: Enhanced catalytic activity and stability of Pt nanoparticles by surface coating of nanosized graphene oxide for hydrogen production from hydrolysis of ammonia–borane

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Publication details

The article was received on 08 Aug 2017, accepted on 18 Sep 2017 and first published on 18 Sep 2017


Article type: Paper
DOI: 10.1039/C7SE00384F
Citation: Sustainable Energy Fuels, 2017, Advance Article
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    Enhanced catalytic activity and stability of Pt nanoparticles by surface coating of nanosized graphene oxide for hydrogen production from hydrolysis of ammonia–borane

    W. Ye, Y. Ge, Z. Gao, R. Lu and S. Zhang, Sustainable Energy Fuels, 2017, Advance Article , DOI: 10.1039/C7SE00384F

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