Well-dispersed composites of graphene and molybdenum disulfide were synthesized without using a mediator. The composites were characterized by scanning electron microscopy, transmission electron microscopy and X-ray diffraction. The electrochemical properties of a glassy carbon electrode (GCE) modified with the graphene/MoS2 composite were investigated by electrochemical impedance spectroscopy and cyclic voltammetry. Hydroquinone was selected as a model target to show the sensing capability of the modified GCE. The GCE, best operated at a working voltage of 0.10 V (vs. Ag/AgCl), exhibits excellent catalytic activity towards hydroquinone, with a linear response in the 0.5 to 300 mu M concentration range and a 37 nM detection limit (at an S/N ratio of 3). The superior performance of the GCE is attributed to the synergistic effects of graphene and MoS2.
机构:
Tabriz Univ Med Sci, Hematol Oncol Res Ctr, Tabriz 51664, Iran
Tabriz Univ Med Sci, Students Res Comm, Fac Pharm, Tabriz, IranTabriz Univ Med Sci, Drug Appl Res Ctr, Tabriz 51664, Iran
Hashemzadeh, Nastaran
Shadjou, Nasrin
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Urmia Univ, Nano Technol Res Ctr, Dept Nanochem, Orumiyeh, Iran
Urmia Univ, Fac Sci, Dept Chem, Orumiyeh, IranTabriz Univ Med Sci, Drug Appl Res Ctr, Tabriz 51664, Iran
Shadjou, Nasrin
Eivazi-Ziaei, Jamal
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Tabriz Univ Med Sci, Hematol Oncol Res Ctr, Tabriz 51664, IranTabriz Univ Med Sci, Drug Appl Res Ctr, Tabriz 51664, Iran
机构:
Minist Agr, Agroenvironm Protect Inst, Key Lab Environm Factors Control Agroprod Qual Sa, Tianjin 300191, Peoples R ChinaMinist Agr, Agroenvironm Protect Inst, Key Lab Environm Factors Control Agroprod Qual Sa, Tianjin 300191, Peoples R China
Shi, Rongguang
Liang, Jing
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Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R ChinaMinist Agr, Agroenvironm Protect Inst, Key Lab Environm Factors Control Agroprod Qual Sa, Tianjin 300191, Peoples R China
Liang, Jing
Zhao, Zongshan
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Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R ChinaMinist Agr, Agroenvironm Protect Inst, Key Lab Environm Factors Control Agroprod Qual Sa, Tianjin 300191, Peoples R China
Zhao, Zongshan
Liu, Yi
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机构:
Yantai Univ, Sch Chem & Chem Engn, Yantai 264005, Peoples R ChinaMinist Agr, Agroenvironm Protect Inst, Key Lab Environm Factors Control Agroprod Qual Sa, Tianjin 300191, Peoples R China
Liu, Yi
Liu, Aifeng
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Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R ChinaMinist Agr, Agroenvironm Protect Inst, Key Lab Environm Factors Control Agroprod Qual Sa, Tianjin 300191, Peoples R China
机构:Qingdao University of Science and Technology,Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering
Guiyun Xu
Shaoping Liang
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机构:Qingdao University of Science and Technology,Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering
Shaoping Liang
Jinshi Fan
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机构:Qingdao University of Science and Technology,Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering
Jinshi Fan
Ge Sheng
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机构:Qingdao University of Science and Technology,Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering
Ge Sheng
Xiliang Luo
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机构:Qingdao University of Science and Technology,Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering