In situ facile loading of noble metal nanoparticles on polydopamine nanospheres via galvanic replacement reaction for multifunctional catalysis
In situ facile loading of noble metal nanoparticles on polydopamine nanospheres via galvanic replacement reaction for multifunctional catalysis
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通过原位取代反应将贵金属纳米颗粒轻松负载在聚多巴胺纳米球上以实现多功能催化
DOI:
10.1007/s11426-017-9042-x
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发表时间:
2017-07
期刊:
影响因子:
--
通讯作者:
Song Wei-Guo
中科院分区:
文献类型:
--
作者:
Wei Fang;Liu Jian;Zhu Ya-Nan;Wang Xiao-Shi;Cao Chang-Yan;Song Wei-Guo
Noble metal nanoparticles (Pd, Ag, Pt, Au) with small and relatively uniform sizes were loaded on polydopamine nanospheres through in situ galvanic replacement reaction in aqueous solution. No additional reductant, surfactant or organic solvent was needed. X-ray photoelectron spectroscopy results revealed that the amount of quinone increased, while the amount of phenolic hydroxyl decreased on PDA nanospheres, indicating that the galvanic displacement reaction occurred between catechol groups and noble metal ions. The as-prepared PDA/Pd exhibited high catalytic activity and excellent stability in styrene hydrogenation. Moreover, PDA spheres retains the photo-thermal effect to serve as a nano-sized heater to accelerate the catalytic reactions under near-infrared illumination.
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