Cu-N Dopants Boost Electron Transfer and Photooxidation Reactions of Carbon Dots
Cu-N Dopants Boost Electron Transfer and Photooxidation Reactions of Carbon Dots
复制标题
Cu-N 掺杂剂促进碳点的电子转移和光氧化反应
DOI：
10.1002/anie.201501912
复制
发表时间：
2015-05-26
影响因子：
16.6
通讯作者：
Zeng, Haibo
中科院分区：
文献类型：
--
作者：
Wu, Wenting;Zhan, Liying;Zeng, Haibo
碳点的宽带光吸收能力激发了它们在光催化中的应用，但由于其内部的电子转移能力较差，这一应用受到了阻碍。在本论文中，我们报道了铜氮掺杂硫化镉的制备，并研究了掺杂促进的电子转移和其在光氧化反应中的性能。以Na-2[Cu(EDTA)]为前驱体，一步热解合成了硫化镉，实现了铜氮掺杂。经ESR、FTIR和X-射线光电子能谱证实，Cusceres通过铜-氮络合物与碳基质形成络合物。掺入铜氮后，材料的吸电子能力提高了2.5倍和1.5倍，电导率提高到171.8scm(-1)。由于这些性能的增强，Cd掺杂后，Cd S在1，4-dihydro-2，6-dimethylpyridine-3，5-dicarboxylate的光氧化反应中的光催化效率提高了3.5%。
The broadband light-absorption ability of carbon dots (CDs) has inspired their application in photocatalysis, however this has been impeded by poor electron transfer inside the CDs. Herein, we report the preparation of Cu-N-doped CDs (Cu-CDs) and investigate both the doping-promoted electron transfer and the performance of the CDs in photooxidation reactions. The Cu-N doping was achieved through a one-step pyrolytic synthesis of CDs with Na-2[Cu(EDTA)] as precursor. As confirmed by ESR, FTIR, and X-ray photoelectron spectroscopies, the Cuspecies chelates with the carbon matrix through Cu-N complexes. As a result of the Cu-N doping, the electron-accepting and -donating abilities were enhanced 2.5 and 1.5times, and the electric conductivity was also increased to 171.8scm(-1). As a result of these enhanced properties, the photocatalytic efficiency of CDs in the photooxidation reaction of 1,4-dihydro-2,6-dimethylpyridine-3,5-dicarboxylate is improved 3.5-fold after CD doping.