School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China.
School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China.
Biosens Bioelectron. 2016 Dec 15;86:62-67. doi: 10.1016/j.bios.2016.06.034. Epub 2016 Jun 14.
Owing to awfully harmful to the environment and human health, the qualitative and quantitative determination of parachlorophenol (PCP) is of great significance. In this paper, by using silica@polydopamine as template, nitrogen-doped hollow carbon spheres wrapped with reduced graphene oxide (NHCNS@RG) nanostructure was prepared successfully via a self-assembly approach due to the electrostatic interaction, and the obtained NHCNS@RG could exhibit the unique properties of NHCNS and RG: the NHCNS could impede the aggregation tendency of RG and possess high electrocatalytic activity; the RG enlarges the contacting area and offers many area-normalized edge-plane structures and active sites. Scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, X-ray diffraction and electrochemical method were used to characterize the morphology and structure of NHCNS@RG. Then, the NHCNS@RG hybrids were applied for the electrochemical sensing of PCP, under the optimized conditions, the detection limit of PCP obtained in this work is 0.01μM and the linear range is 0.03-38.00μM.
由于对环境和人类健康造成极大危害，对五氯酚（PCP）的定性和定量测定具有重要意义。本文以二氧化硅@聚多巴胺为模板，通过静电相互作用成功制备了氮掺杂空心碳球包裹还原氧化石墨烯（NHCNS@RG）纳米结构，所得 NHCNS@RG 可表现出 NHCNS 和 RG 的独特性质：NHCNS 可阻止 RG 的聚集趋势并具有高电催化活性；RG 扩大了接触面积，并提供了许多面积归一化的边缘平面结构和活性位点。采用扫描电子显微镜、透射电子显微镜、拉曼光谱、X 射线衍射和电化学方法对 NHCNS@RG 的形貌和结构进行了表征。然后，将 NHCNS@RG 杂化物应用于 PCP 的电化学传感，在优化条件下，本工作获得的 PCP 的检测限为 0.01μM，线性范围为 0.03-38.00μM。
