Facile synthesis of CoxP decorated porous carbon microspheres for ultrasensitive detection of 4-nitrophenol
Xiao, LL (Xiao, Lili); Xu, RY (Xu, Ruiyu); Wang, F (Wang, Fu)
2018
发表期刊TALANTA
ISSN0039-9140
卷号179期号:3页码:448-455
摘要

A novel cobalt phosphide (CoxP, a mixture of CoP and Co2P) embedded within nitrogen-doped porous carbon microspheres was facilely prepared by pyrolysis of a composite precursor. The composite precursor was achieved by in-situ growth of Co-based zeolitic imidazolate framework (ZIF-67) on the Zn(PO4)(x) microspheres. The as prepared CoxP decorated nitrogen-doped porous carbon microspheres (CoxP/NC) possess uniform distribution of graphite-encapsulated CoxP, a large surface area (826 m(2) g(-1)) and abundant mesopores. It was found the CoxP/NC exhibited excellent electrocatalytic performances toward 4-nitrophenol (4-NP). Therefore, CoxP/NC was developed to fabricate an ultrasensitive electrochemical sensor for 4-NP by using differential pulse voltammetry (DPV). In comparison with glassy carbon electrode (GCE) and nitrogen-doped carbon (NC) modified GCE, the CoxP/NC modified GCE (CoxP/NC/GCE) showed a remarkable increase in DPV current toward 4-NP. Under optimized condition, an ultrahigh sensitivity of 20.9 (mu A mol(-1) L) and a low detection limit of 2 x 10(-9) mol L-1 (at a signal-to-noise ratio of 3, S/N = 3) for 4-NP were achieved. Additionally, the CoxP/NC/GCE was successfully applied to detect 4-NP in tap water with good recoveries for its attractive selectivity and repeatability, which indicated that CoxP/NC could be a promising candidate for analyzing 4-NP.

关键词Nitrogen Doped Carbon Porous Carbon Microspheres Cobalt Phosphide Nanoparticles 4-nitrophenol
DOI10.1016/j.talanta.2017.11.046
收录类别SCI
WOS记录号WOS:000424178000061
引用统计
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/5207
专题中国科学院特殊环境功能材料与器件重点试验室
通讯作者Wang, F (Wang, Fu)
作者单位1.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China
2.Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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GB/T 7714
Xiao, LL ,Xu, RY ,Wang, F . Facile synthesis of CoxP decorated porous carbon microspheres for ultrasensitive detection of 4-nitrophenol[J]. TALANTA,2018,179(3):448-455.
APA Xiao, LL ,Xu, RY ,&Wang, F .(2018).Facile synthesis of CoxP decorated porous carbon microspheres for ultrasensitive detection of 4-nitrophenol.TALANTA,179(3),448-455.
MLA Xiao, LL ,et al."Facile synthesis of CoxP decorated porous carbon microspheres for ultrasensitive detection of 4-nitrophenol".TALANTA 179.3(2018):448-455.
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