Journal
SUSTAINABLE ENERGY & FUELS
Volume 1, Issue 10, Pages 2128-2133Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7se00384f
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Funding
- Joint Funds of the National Natural Science Foundation of China [U1608223]
- National Natural Science Foundation of China [21576044, 21536002]
- Science Fund for Creative Research Groups of the National Natural Science Foundation of China [21421005]
- Dalian University of Technology Innovation Team [DUT2016TB12]
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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 ammoniaborane compared with SiO2@Pt and graphene supported Pt nanoparticles, with an impressive initial TOF value reaching 324.6 mol(H2) mol(Pt)(-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 Pt-0 4f(7/2) in SiO2@Pt@NGO was 71.12 eV slightly higher than 70.84 eV of Pt-0 4f(7/2) in SiO2@Pt, indicating more electron-deficient Pt atoms after the interaction with NGO, which may be responsible for the enhanced catalytic performance.
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