Facile fabrication of metal oxide hollow spheres using polydopamine nanoparticles as active templates

Facile fabrication of metal oxide hollow spheres using polydopamine nanoparticles as active templates
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使用聚多巴胺纳米颗粒作为活性模板轻松制备金属氧化物空心球

DOI:
10.1002/pi.4913
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发表时间:
2015-08
影响因子:
3.2
通讯作者:
Xu, Jian
Xu, Jian
中科院分区:
化学3区
文献类型:
--
作者:
Long, Yuhua;Yang, Xiaoli;Zhao, Ning;Xu, Jian

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报道了一种以聚多巴胺(PDA)纳米粒子为活性模板制备金属氧化物空心球的简便方法。通过多巴胺在含有不同量的聚环氧乙烷-聚环氧丙烷-聚环氧乙烷(PEO-PPO-PEO)的Tris缓冲溶液中聚合制备单分散PDA纳米颗粒。随着PEO-PPO-PEO的浓度从0增加到1.25 mg mL(-1),所得PDA纳米颗粒的直径从约180 nm减小到80 nm。PDA的活性基团和吸附在PDA微球上的PEO-PPO-PEO能与多种金属离子形成螯合物。结果表明,以直径小于100 nm的PDA微球为模板,煅烧后可得到CeO 2、NiO和Cr2 O3等多种金属氧化物空心球,证明了该方法制备多种金属氧化物空心球的多样性。(c)2015年化学工业协会
A facile method of fabricating metal oxide hollow spheres using polydopamine (PDA) nanoparticles as active templates is reported. Monodisperse PDA nanoparticles were prepared by the polymerization of dopamine in Tris buffer solution containing various amounts of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO). The diameter of the resultant PDA nanoparticles decreased from about 180 to 80 nm with an increase of PEO-PPO-PEO concentration from 0 to 1.25 mg mL(-1). The active groups of PDA and also the PEO-PPO-PEO adsorbed on the PDA spheres can chelate with various metal ions. It was found that when PDA spheres with diameter below 100 nm were used as templates, diverse metal oxide hollow spheres like CeO2, NiO and Cr2O3 could be obtained after calcination, demonstrating the diversity of this method for fabricating various metal oxide hollow spheres. (c) 2015 Society of Chemical Industry
DOI: 10.1002/adma.201203923
发表时间: 2013-02-20
期刊: ADVANCED MATERIALS
影响因子: 29.4
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DOI: 10.1021/ja108720w
发表时间: 2011-01-12
影响因子: 15
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