首页|Pt-NixOy heteroaggregate nanoparticles confined in hollow mesoporous silica nanospheres for enhanced hydrolysis of ammonia borane
Pt-NixOy heteroaggregate nanoparticles confined in hollow mesoporous silica nanospheres for enhanced hydrolysis of ammonia borane
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In this work,Pt-NixOy heteroaggragate nanoparticles confined in hollow mesoporous silica nanospheres(Pt-NixOy@HMSNs)are synthesized in one-pot,which features Pt-NixOy hybrid nanoparticles inside hollow cavities of mesoporous silica nanospheres.Through adjusting the ratios of Pt~(2+)/Ni~(2+)in micelles,Pt-NixOy@HMSNs with different Pt/Ni ratios are synthesized.The obtained materials were tested for hydrolysis of ammonia borane with detailed kinetic studies.Compared to Pt@HMSNs and Ni@HMSNs,Pt4-(NixOy)_(1/x)@HMSNs show the enhanced performance in AB hydrolysis.The catalytic activity improvement is ascribed to the synergistic effect of Pt-NixOy and the void confinement,where the interfaces of Pt-NixOy greatly enhance the hydrolysis activity and the confinement of functional nanoparticles inside the central voids increases their structural and catalytic stability.
Shanghai Key Laboratory of Multiphase Materials Chemical Engineering,School of Chemical Engineermg,East China University of Science and Technology,130 Meilong Road,Shanghai,200237,PR China
Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,1219 Zhongguan West Road,Ningbo,Zhejiang,315201,PR China
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