刺槐豆多糖纳米硒的制备及表征

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

DOI：10.3969/j.issn.1673-1689.2014.09.017

中文关键词: 刺槐豆多糖 抗坏血酸 纳米硒 亚硒酸

英文关键词: locust bean polysaccharide, ascorbic acid, nano-selenium, selenious acid

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中文摘要:

以刺槐豆多糖为软模板，用抗坏血酸还原亚硒酸法制备纳米硒，探讨反应时间、温度、刺槐豆多糖及抗坏血酸浓度对产物粒径和形貌的影响，并采用紫外光谱（UV）、X衍射和扫描电镜（SEM）进行表征。结果表明：当抗坏血酸和亚硒酸摩尔比为5∶1，刺槐豆多糖质量分数为0.2‰，60 ℃反应4 h后可得红色均匀的球状纳米硒颗粒，平均粒径为95～100 nm。

英文摘要:

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.

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