Engineering the defect state and reducibility of ceria based nanoparticles for improved anti-oxidation performance
Wang, YJ; Dong, H; Lyu, GM; Zhang, HY; Ke, J; Kang, LQ; Teng, JL; Sun, LD; Si, R; Zhang, J; Liu, YJ; Zhang, YW; Huang, YH; Yan, CH; Sun, LD (reprint author), Peking Univ, State Key Lab Rare Earth Mat Chem & Applicat, PKU HKU Joint Lab Rare Earth Mat & Bioinorgan Che, Beijing Natl Lab Mol Sci,Coll Chem & Mol Engn, Beijing 100871, Peoples R China.
2015
发表期刊NANOSCALE
ISSN2040-3364
卷号7期号:33页码:13981—13990
文章类型期刊文献
摘要Due to their excellent anti-oxidation performance, CeO2 nanoparticles receive wide attention in pharmacological application. Deep understanding of the anti-oxidation mechanism of CeO2 nanoparticles is extremely important to develop potent CeO2 nanomaterials for anti-oxidation application. Here, we report a detailed study on the anti-oxidation process of CeO2 nanoparticles. The valence state and coordination structure of Ce are characterized before and after the addition of H2O2 to understand the anti-oxidation mechanism of CeO2 nanoparticles. Adsorbed peroxide species are detected during the anti-oxidation process, which are responsible for the red-shifted UV-vis absorption spectra of CeO2 nanoparticles. Furthermore, the coordination number of Ce in the first coordination shell slightly increased after the addition of H2O2. On the basis of these experimental results, the reactivity of coordination sites for peroxide species is considered to play a key role in the anti-oxidation performance of CeO2 nanoparticles. Furthermore, we present a robust method to engineer the anti-oxidation performance of CeO2 nanoparticles through the modification of the defect state and reducibility by doping with Gd3+. Improved anti-oxidation performance is also observed in cell culture, where the biocompatible CeO2-based nanoparticles can protect INS-1 cells from oxidative stress induced by H2O2, suggesting the potential application of CeO2 nanoparticles in the treatment of diabetes.
关键词Oxidative Stress Co Oxidation Oxide Nanoparticles Ceo2 Nanocrystals Free-radicals Reactive Oxygen Solid-solutions Surface Nanostructures Catalysis
收录类别SCI
语种英语
WOS记录号WOS:000359546900022
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/24918
专题中科院上海应用物理研究所2011-2018年
通讯作者Sun, LD (reprint author), Peking Univ, State Key Lab Rare Earth Mat Chem & Applicat, PKU HKU Joint Lab Rare Earth Mat & Bioinorgan Che, Beijing Natl Lab Mol Sci,Coll Chem & Mol Engn, Beijing 100871, Peoples R China.
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GB/T 7714
Wang, YJ,Dong, H,Lyu, GM,et al. Engineering the defect state and reducibility of ceria based nanoparticles for improved anti-oxidation performance[J]. NANOSCALE,2015,7(33):13981—13990.
APA Wang, YJ.,Dong, H.,Lyu, GM.,Zhang, HY.,Ke, J.,...&Sun, LD .(2015).Engineering the defect state and reducibility of ceria based nanoparticles for improved anti-oxidation performance.NANOSCALE,7(33),13981—13990.
MLA Wang, YJ,et al."Engineering the defect state and reducibility of ceria based nanoparticles for improved anti-oxidation performance".NANOSCALE 7.33(2015):13981—13990.
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