基于碳纳米角/氧化石墨烯纳米杂化材料的对硝基氯苯电化学传感。
Electrochemical sensing of 4-nitrochlorobenzene based on carbon nanohorns/graphene oxide nanohybrids.
机构信息
Department of Applied Biology and Chemical Technology, and the State Key Laboratory of Chirosciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong; School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China; State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, PR China.
School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, PR China.
出版信息
Biosens Bioelectron. 2018 May 30;106:136-141. doi: 10.1016/j.bios.2018.01.058. Epub 2018 Jan 31.
Owing to the harmful nature of 4-nitrochlorobenzene (4-NCB, one toxic organic pollutant) and the low cost, high sensitivity and ease of operation of electrochemical method, it is highly desirable to develop effect electrochemical sensor for the detection of 4-NCB. Herein, by partially unzipping carbon nanohorns (CNHs) via a simple wet-chemistry method, CNHs and graphene oxide (GO) (CNHs/GO) nanohybrids were produced for sensing 4-NCB with synergistic properties. While the retained CNHs offer a path for rapid electron transport, the GO sheets formed by partially unzipping CNHs provide abundant active sites, further increase in surface area as well as improved dispersibility of the CNHs/GO. Our results show that the CNHs/GO modified electrode has excellent sensitivity to 4-NCB with a wide linear response range and a detection limit as low as 10 nM.
由于 4-硝基氯苯（4-NCB，一种有毒的有机污染物）的危害性以及电化学方法成本低、灵敏度高、操作简单，因此非常希望开发出用于检测 4-NCB 的有效电化学传感器。在此，通过一种简单的湿化学方法部分解卷碳纳米角（CNHs），产生了 CNHs 和氧化石墨烯（GO）（CNHs/GO）纳米杂化物，具有协同性能，可用于检测 4-NCB。而保留的 CNHs 提供了快速电子传输的途径，而部分解卷 CNHs 形成的 GO 片则提供了丰富的活性位点，进一步增加了表面积，并提高了 CNHs/GO 的分散性。我们的结果表明，CNHs/GO 修饰电极对 4-NCB 具有优异的灵敏度，线性响应范围很宽，检测限低至 10 nM。
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