Engineering the defect state and reducibility of ceria based nanoparticles for improved anti-oxidation performance
文献类型：期刊论文
| 作者 | Wang, YJ; Dong, H; Lyu, GM; Zhang, HY; Ke, J; Kang, LQ; Teng, JL; Sun, LD; Si, R; Zhang, J |
| 刊名 | NANOSCALE
 |
| 出版日期 | 2015 |
| 卷号 | 7期号:33页码:13981—13990 |
| 关键词 | OXIDATIVE STRESS CO OXIDATION OXIDE NANOPARTICLES CEO2 NANOCRYSTALS FREE-RADICALS REACTIVE OXYGEN SOLID-SOLUTIONS SURFACE NANOSTRUCTURES CATALYSIS |
| ISSN号 | 2040-3364 |
| 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. |
| 英文摘要 | 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. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000359546900022 |
| 公开日期 | 2016-03-08 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/24918]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 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.,...&Yan, CH.(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. |
入库方式： OAI收割
来源：上海应用物理研究所
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