Formation and Stabilization of Selenium Nano-particles in Aqueous Solution of Undaria Pinnatifida Charv. Suringer Polysaccharide

Chem. J. Chinese Universities

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Formation and Stabilization of Selenium Nano-particles in Aqueous Solution of Undaria Pinnatifida Charv. Suringer Polysaccharide

ZHENG Wen-Jie^1,2, HUANG Liang¹, YANG Fang^1,2, BAI Yan¹

1. Department of Chemistry;
2. Institute of Hydrobiology, Jinan University, Guangzhou 510632, China

Received:2006-06-05 Revised:1900-01-01 Online:2007-02-10 Published:2007-02-10
Contact: ZHENG Wen-Jie

Abstract

Abstract:

In aqueous solution of degraded undaria pinnatifida charv. suringer polysaccharide(DUP), excessive L-ascorbic acid(Vc) reacted with selenium dioxide(SeO₂) to form selenium nano-particles(Se⁰) at room temperature. It was characterized by transmission electron microscope(TEM), laser light scattering image and Resonance Rayleigh Scattering(RRS) to study the function of DUP in the modulation and stabilization of selenium nano-particles. The results show that DUP can modulate the reaction rate, modify the surface of selenium particles and control the diameter of selenium particles. When the concentration of Se⁰ was 0.0507 to 3.245 mmol/L, the average diameter of selenium particles modified by DUP was 24 to 64 nm, and the selenium particles were sphere. The nanometer Se⁰ sol-gel can be preserved for more than a month in aqueous solution of DUP at 4 ℃.

Key words: Degraded undaria pinnatifida charv. suringer polysaccharide(DUP), Surface-modified nanometer selenium, Nanometer Se⁰ particle, Modulation, Stabilization

CLC Number:

O614
O613.5

TrendMD:

ZHENG Wen-Jie^1,2, HUANG Liang¹, YANG Fang^1,2, BAI Yan¹. Formation and Stabilization of Selenium Nano-particles in Aqueous Solution of Undaria Pinnatifida Charv. Suringer Polysaccharide[J]. Chem. J. Chinese Universities, doi: .

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Formation and Stabilization of Selenium Nano-particles in Aqueous Solution of Undaria Pinnatifida Charv. Suringer Polysaccharide

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