In situ electrochemical synthesis of graphene-poly(arginine) composite for p-nitrophenol monitoring

JOURNAL OF HAZARDOUS MATERIALS

卷:421

Article

Li, Yiwei^1,2  Ma, Yaohong^1,2  Lichtfouse, Eric^5,6  Song, Jin^1,2  Gong, Rui⁷  Zhang, Jinheng^1,2  Wang, Shuo^1,2  Xiao, Leilei^1,3,4 

[1] Qilu Univ Technol, Biol Inst, Shandong Acad Sci, Jinan 250103, Peoples R China

[2] Shandong Prov Key Lab Biosensors, Jinan 250103, Peoples R China

[3] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Biol Resources Utilizat, Yantai 264003, Peoples R China

[4] Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China

[5] Aix Marseille Univ, CNRS, IRD, INRA,Coll France,CEREGE, Ave Louis Philibert, F-13100 Aix En Provence, France

[6] Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China

[7] Chinese Acad Sci, CAS Ctr Excellence Biomacromol, Inst Biophys, Natl Lab Biomacromol, 15 Datun Rd, Beijing 100101, Peoples R China

关键词: P-nitrophenol;    Graphene;    Poly-arginine;    Electrochemical analysis;    Wastewater monitoring;   

DOI  :  10.1016/j.jhazmat.2021.126718

来源: Elsevier

【 摘 要 】

Para-Nitrophenol (p-nitrophenol) is a common industrial pollutant occurring widely in water bodies, yet actual monitoring methods are limited. Herein we proposed a fully electrochemically in situ synthesized graphenepolyarginine composite functionalized screen printed electrode, as a novel p-nitrophenol sensing platform. The electrode was characterized by morphologic, spectrometric and electrochemical techniques. p-nitrophenol in both pure aqueous solution and real water samples was tested. Results show a detection limit as low as the nanomolar level, and display a linear response and high selectivity in the range of 0.5-1250 mu M. Molecular simulation reveals a detailed synergy between graphene and poly-arginine. The preferable orientation of nitrophenol molecules on the graphene interface in the presence of poly-arginine induces H- and ionic binding. This sensor is an ideal prototype for p-nitrophenol quantification in real waters.

【 授权许可】

Free