Li Guochang, Li Jian, Zhou Ziwei, Li Congling, Cai Chao, Guo Bingkun, Priestley Rodney D, Han Lei, Liu Rui
Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, School of Materials Science and Engineering, and Institute for Advanced Study, Tongji University, Shanghai, 201804, China.
Materials Genome Institute, Shanghai University, Shanghai, 200444, China.
Dalton Trans. 2017 Dec 21;46(47):16419-16425. doi: 10.1039/c7dt03021e. Epub 2017 Oct 5.
We present the use of silica-polydopamine (SiO@PDA) core-shell nanoparticles (NPs) as self-confined templates for the fabrication of ultra-stable hollow Pt anchored N-doped carbon nanospheres (Pt/HN-C). SiO@PDA nanospheres were fabricated by a facile one-pot process, followed by the deposition of Pt NPs onto the outer shell layer. The confinement and adhesion of the PDA framework ensured the distribution and stability of Pt NPs after carbonization at the carbon shell layer. The converted Pt/HN-C exhibited excellent catalytic performance and durability for the oxygen reduction reaction (ORR).
我们展示了使用二氧化硅-聚多巴胺（SiO@PDA）核壳纳米颗粒（NPs）作为自限模板来制备超稳定的中空铂锚定氮掺杂碳纳米球（Pt/HN-C）。SiO@PDA纳米球通过简便的一锅法制备，随后将铂纳米颗粒沉积到外壳层上。聚多巴胺框架的限制和粘附作用确保了在碳壳层碳化后铂纳米颗粒的分布和稳定性。转化后的Pt/HN-C在氧还原反应（ORR）中表现出优异的催化性能和耐久性。
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