Direct synthesis of nanoceria in aqueous polyhydroxyl solutions
Direct synthesis of nanoceria in aqueous polyhydroxyl solutions
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DOI：
10.1021/jp076164k
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发表时间：
2007-11-22
影响因子：
3.7
通讯作者：
Seal, S.
中科院分区：
文献类型：
--
作者：
Karakoti, A. S.;Kuchibhatla, Satyanarayana V. N. T.;Seal, S.
纳米氧化铈具有优异的生物医学特性，可用于治疗活性氧（ROS）引起的疾病。在目前的工作中，纳米氧化铈的合成和氧化还原化学的存在下，多羟基基团，如葡萄糖和葡聚糖的报告。采用紫外-可见光谱和透射电子显微镜研究了酸性和碱性介质对纳米氧化铈的合成和氧化态稳定性的影响。碱性和酸性介质在纳米氧化铈的合成中在尺寸和结构方面显示出差异，而不干扰氧化还原化学。本文还报道了纳米氧化铈在酸/碱介质中进行氧化还原转化的纯悬浮液和水悬浮液的比较。
Nanoceria has shown excellent biomedical properties for potential use in treatment of diseases caused by reactive oxygen species (ROS). In the present work, the synthesis and redox chemistry of nanoceria in the presence of polyhydroxyl groups such as glucose and dextran are reported. The effect of both acidic and basic medium on the synthesis and oxidation state stability of nanoceria in the absence of buffer was examined using UV-vis spectroscopy and transmission electron microscopy. The basic and acidic mediums show a difference in the synthesis of nanoceria in terms of the size and structure without interfering with the redox chemistry. A comparison of pure and aqueous saccharides suspension of nanoceria in acid/base media undergoing redox transformation is also reported in this paper.