Hierarchical oxygen-implanted MoS2 nanoparticle decorated graphene for the non-enzymatic electrochemical sensing of hydrogen peroxide in alkaline media

被引:55
|
作者
Xue, Yudong [1 ,2 ]
Maduraiveeran, Govindhan [3 ]
Wang, Mingyong [1 ]
Zheng, Shili [1 ]
Zhang, Yi [1 ]
Jin, Wei [1 ]
机构
[1] Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] SRM Univ, Dept Chem, Res Inst, Chennai 603203, Tamil Nadu, India
基金
中国国家自然科学基金;
关键词
MoS2; Graphene; Hydrogen peroxide; Electrochemical sensing; Alkaline media; ULTRATHIN NANOSHEETS; DOPED GRAPHENE; OXIDE; H2O2; REDUCTION; NANOCOMPOSITE; OXIDATION; ELECTRODE; PLATFORM; SENSOR;
D O I
10.1016/j.talanta.2017.08.060
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Owing to the extensive applications of hydrogen peroxide (H2O2) in biological, environmental and chemical engineering, it is of great importance to investigate sensitive and selective sensing platform towards the detection of H2O2. Herein, oxygen-implanted MoS2 nanoparticles decorated graphene nanocomposite is synthesized via a facile one-pot solvothermal method for the sensitive detection of H2O2 in alkaline media. The structure and morphology of the MoS2/graphene nanocomposites were systematically characterized, showing that Mo-O bonds are formed and oxygen is implanted into the crystal structure in the nanocomposite. As a result, the MoS2/graphene composite exhibited enhanced electron transfer kinetics and excellent electro-reduction performance towards 11202 in alkaline media. Under optimum conditions, the fabricated sensor demonstrated a wide linear response towards H2O2 in the range of 0.25-16 mM with a low detection limit of 0.12 mu M and high sensitivity of 269.7 mu A mM(-1) cm(-2). Besides, the constructed sensor presented a good selectivity to H2O2 with the presence of other interfering species. Therefore, the proposed sensor was successfully applied for the detection and determination of H2O2 in real sample, indicating great potential for the practical applications.
引用
收藏
页码:397 / 405
页数:9
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