Intrinsic peroxidase-like activity and the catalytic mechanism of gold@carbon dots nanocomposites
Intrinsic peroxidase-like activity and the catalytic mechanism of gold@carbon dots nanocomposites
复制标题
金@碳点纳米复合材料的固有过氧化物酶活性及催化机制
作者：
郑翠;柯文静;殷天翔;安学勤
通过碳量子点（CD）还原氯金酸，在室温下成功制备了分散性良好的AuNPs@ CD纳米复合材料。采用透射电子显微镜（TEM）、傅里叶变换红外光谱（FTIR）、拉曼光谱（Raman）和X射线光电子能谱（XPS）对所制备的AuNPs @ CD纳米复合材料进行了表征，结果表明AuNPs@ CD纳米复合材料具有核壳结构。AuNPs@ CD具有内在的过氧化物酶样活性，其催化活性高于AuNPs。通过荧光光谱、电子自旋共振和循环伏安法研究了AuNPs@ CD的类过氧化物酶活性机制，发现其机制可能是促进了TMB和H2 O2之间的电子转移。
Well-dispersed AuNPs@CDs nanocomposites were successfully synthesized from the reduction of chloroauric acid by carbon dots (CDs) at room temperature. The as-prepared AuNPs@CDs were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS), and the results indicate AuNPs@CDs nanocomposites with a core–shell structure. The AuNPs@CDs are found to possess intrinsic peroxidase-like activity, and the catalytic activity is higher than that of AuNPs. The mechanism of peroxidase-like activity of AuNPs@CDs was investigated by fluorescence spectroscopy, electron spin resonance and cyclic voltammetry, and it is found that the mechanism could be ascribed to facilitating the electron transfer between TMB and H2O2.
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影响因子：
15
作者：
Rodríguez-López, JN;Lowe, DJ;Thorneley, RNF
通讯作者：
Thorneley, RNF
DOI：
10.1039/c2an35900f
发表时间：
2012-08
期刊：
The Analyst
影响因子：
--
作者：
Dongdong Zeng;Weijie Luo;Jiang Li;Huajie Liu;Hongwei Ma;Qing Huang;C. Fan
通讯作者：
Dongdong Zeng;Weijie Luo;Jiang Li;Huajie Liu;Hongwei Ma;Qing Huang;C. Fan
影响因子：
4.9
作者：
Wang, Fu;Chen, Yong-hua;Ma, Dong-ge
通讯作者：
Ma, Dong-ge
影响因子：
3.5
作者：
Chai, Fang;Wang, Chungang;Su, Zhongmin
通讯作者：
Su, Zhongmin
影响因子：
5.7
作者：
Du, Fangkai;Zeng, Fang;Wu, Shuizhu
通讯作者：
Wu, Shuizhu