Preparation and Characterization of Nano-Selenium with Locust Bean Polysaccharides as Soft Template

Abstract:

Nano-selenium was prepared with locust bean polysaccharides as soft template by the reduction of ascorbic acid(Vc) to selenious acid and characterized by UV and SEM. The effects of reaction time, temperature, locust bean polysaccharide and Vc concentration on particle size and morphology of the resulting product were investigated. The results showed that uniformly red globular nano-selenium was obtained with average diameter about 95～100 nm when the mass fraction of locust bean polysaccharide was 0.2‰ and the molar ratio of ascorbic acid to selenite 5∶1 at 60 ℃ for 4 h.