期刊
POLYMER CHEMISTRY
卷 2, 期 12, 页码 2893-2899出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1py00311a
关键词
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资金
- National Natural Science Foundation of China [21174033]
- Fundamental Research Funds for the Central Universities [HIT. NSRIF. 2009086, 2009082]
- State Key Laboratory of Supramolecular Structure and Materials [SKLSSM201111]
- China Postdoctoral Science Foundation [20090450978, 201003417]
- Heilongjiang Postdoctoral Science Foundation [LBH-Z09123]
Hierarchical porous polypyrrole (PPy) nanoclusters composed of small PPy nanospheres were successfully prepared in one-step by a reactive-template method without any surfactants. The Fe3O4 nanoclusters acted as both the template for shaping PPy structure and oxidant source simultaneously. The dosage of pyrrole monomer, the concentration of HCl acid had significant influence on the structures and conductivities of the resulting PPy nanoclusters. By carefully controlling the experimental conditions, hierarchical porous PPy nanoclusters with the surface area as high as 10(4) m(2) g(-1) were obtained. The value was about 3.5 times larger than that of traditional PPy nanoparticles. Based on the transmission electron microscope (TEM) images and Fourier-transform infrared (FT-IR) spectra, a possible formation mechanism was proposed and investigated in detail. To test the feasibility of using the PPy nanoclusters in real applications, the capacity of nanoclusters as a heavy metal ion remover was explored. The resulting PPy nanoclusters showed an excellent ability to remove Cr(VI) ions in aqueous solution.
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