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

Yudong Xue; Govindhan Maduraiveeran; Mingyong Wang; Shili Zheng; Yi Zhang; Wei Jin

doi:10.1016/j.talanta.2017.08.060

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

Talanta. 2018 Jan 1:176:397-405. doi: 10.1016/j.talanta.2017.08.060. Epub 2017 Aug 19.

Authors

Yudong Xue¹, Govindhan Maduraiveeran², Mingyong Wang³, Shili Zheng³, Yi Zhang³, Wei Jin⁴

Affiliations

¹ National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China.
² Research Institute, Department of Chemistry, SRM University, Chennai 603203, India.
³ National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
⁴ National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China. Electronic address: wjin@ipe.ac.cn.

PMID: 28917767
DOI: 10.1016/j.talanta.2017.08.060

Abstract

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 H₂O₂ in alkaline media. Under optimum conditions, the fabricated sensor demonstrated a wide linear response towards H₂O₂ in the range of 0.25-16mM with a low detection limit of 0.12μM and high sensitivity of 269.7μAmM^-1cm^-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.

Keywords: Alkaline media; Electrochemical sensing; Graphene; Hydrogen peroxide; MoS(2).