Nitrogen-doped hollow carbon spheres wrapped with graphene nanostructure for highly sensitive electrochemical sensing of parachlorophenol.
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.
School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China.
Yinhui
Y
Yi
School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China. Electronic address: zhgb1030@ujs.edu.cn.
Gangbing
G
Zhu
School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China.
Heng
H
Sun
School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China.
Jianfan
J
Sun
School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China.
Xiangyang
X
Wu
D000327:Adsorption; D002244:Carbon / Q000737:chemistry; D002733:Chlorophenols / Q000032:analysis*; D003217:Conductometry / Q000295:instrumentation*; D004566:Electrodes; D004784:Environmental Monitoring / Q000295:instrumentation*; D004785:Environmental Pollutants / Q000032:analysis; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006108:Graphite / Q000737:chemistry*; D058608:Nanopores / Q000648:ultrastructure; D054118:Nanospheres / Q000737:chemistry / Q000648:ultrastructure; D009584:Nitrogen / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
D002733:Chlorophenols; D004785:Environmental Pollutants; D010087:Oxides; C029107:4-chlorophenol; D002244:Carbon; D006108:Graphite; D009584:Nitrogen
Electrochemical sensor; Graphene; Hollow carbon sphere; Nanomaterial; Parachlorophenol