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Issue 31, 2008
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Biomimetic synthesis of titaniananoparticles induced by protamine

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Protamine, a kind of cationic protein extracted from sperm nuclei, was employed for the first time in vitro to induce the formation of a titania/protamine nanoparticle composite from a water-stable titanium precursor, titanium(IV) bis(ammonium lactato) dihydroxide (Ti-BALDH). The resulting titania/protamine nanoparticle composite was extensively characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The titania/protamine nanoparticle composite was of amorphous structure, and exhibited a different morphology from those prepared by an alkali-catalyzed approach. The catalyzing and templating function of protamine involved in the synthesis of the nanoparticle composite is discussed, and a mechanism tentatively proposed. In addition, the effects of pH and temperature on the amount and size of as-prepared titania/protamine nanoparticle composite were systematically investigated.

Graphical abstract: Biomimetic synthesis of titania nanoparticles induced by protamine

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Supplementary files

Article information

18 Feb 2008
09 May 2008
First published
24 Jun 2008

Dalton Trans., 2008, 4165-4171
Article type

Biomimetic synthesis of titania nanoparticles induced by protamine

Y. Jiang, D. Yang, L. Zhang, L. Li, Q. Sun, Y. Zhang, J. Li and Z. Jiang, Dalton Trans., 2008, 4165
DOI: 10.1039/B802745E

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