Abstract
A catalyst that Pt nanoparticles (NPs) anchored on hollow silica nanospheres modified by polyamidoamine (PAMAM) dendrimers was synthesized (marked as hollow SiO2–G1–Pt). The hollow silica nanospheres were facilely prepared through etching the template of ZnO nanospheres. Pt NPs exhibited small size (around 2.32 nm) and uniform dispersion owing to the unique physicochemical property of the dendrimers. The catalytic performances of as-prepared catalysts were evaluated with the reduction of p-nitrophenol by NaBH4. The results showed the fabricated hollow SiO2–G1–Pt catalyst exhibited the excellent catalytic activity, which was higher than that of Pt NPs deposited on hollow silica without grafting of PAMAM dendrimers and Pt NPs loaded on PAMAM-modified ZnO@SiO2. Moreover, the results of recycling experiments revealed hollow SiO2–G1–Pt possessed convenient separation and the similar catalytic performance without visible reduction after five runs.
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Acknowledgments
The authors are grateful to the financial supports of National Natural Science Foundation of China (Grant Nos. 21376051, 21106017 and 21306023), Natural Science Foundation of Jiangsu (Grant No. BK20131288), Fund Project for Transformation of Scientific and Technological Achievements of Jiangsu Province of China (Grant No. BA2014100), Fundamental Research Funds for the Central Universities (3207045421) and Instrumental Analysis Fund of Southeast University.
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Wang, Q., Zhang, Y., Zhou, Y. et al. Synthesis of Pt Nanoparticles Anchored on Polyamidoamine-Modified Hollow Silica Nanospheres for Catalytic Reduction of p-Nitrophenol. J Inorg Organomet Polym 26, 702–710 (2016). https://doi.org/10.1007/s10904-016-0354-2
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DOI: https://doi.org/10.1007/s10904-016-0354-2