Cerium oxide nanoparticles scavenge nitric oxide radical (•NO)
Cerium oxide nanoparticles scavenge nitric oxide radical (•NO)
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DOI：
10.1039/c2cc30485f
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发表时间：
2012-01-01
影响因子：
4.9
通讯作者：
Self, William T.
中科院分区：
文献类型：
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作者：
Dowding, Janet M.;Dosani, Talib;Self, William T.
在这项研究中，我们获得了氧化铈纳米颗粒(CeO2 NPs)能够清除一氧化氮自由基的证据。令人惊讶的是，这种活性存在于3+状态下具有较低Ce水平的CeO2 NPs中(具有低3+/4+比的CeO2 NPs，因此氧空位数量减少)，而与超氧化物清除性能形成对比的是，超氧化物清除性能与3+状态下Ce水平的增加相关(CeO2 NPs具有高3+/4+比，因此氧空位数量增加)。
In this study we have obtained evidence that cerium oxide nanoparticles (CeO2 NPs) are able to scavenge nitric oxide radical. Surprisingly, this activity is present in CeO2 NPs with a lower level of cerium in the 3+ state (CeO2 NPs with low 3+/4+ ratio and therefore a reduced number of oxygen vacancies), in contrast to the superoxide scavenging properties which are correlated with an increased level of cerium in the 3+ state (CeO2 NPs with high 3+/4+ ratio and therefore an increased number of oxygen vacancies).