Hydrothermally prepared α-MnO2/N-rGO composite modified electrode for hydrazine sensing application

IF 2.6 4区化学 Q3 ELECTROCHEMISTRY

Journal of Solid State Electrochemistry Pub Date : 2024-10-02 DOI:10.1007/s10008-024-06080-5

Aarti Pathak, Mohd Quasim Khan, Khursheed Ahmad, Rais Ahmad Khan, Archana Chaudhary, Tae Hwan Oh

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Abstract

In the present study, the hydrothermal method has been used for the synthesis of a manganese dioxide/nitrogen-doped reduced graphene oxide (α-MnO₂/N-rGO) composite. The physical–chemical properties of the synthesized α-MnO₂/N-rGO were examined by different techniques such as powder X-ray diffractometer (XRD), energy dispersive X-ray analysis (EDX), and scanning electron microscopy (SEM). The synthesized α-MnO₂/N-rGO was further used as the catalyst towards the fabrication of a hydrazine (Hz) sensor. The screen-printed carbon (SPC) electrode was modified with α-MnO₂/N-rGO via the drop-cast method. Linear sweep voltammetry (LSV) was used for the determination of Hz, and observations showed that the α-MnO₂/N-rGO/SPC electrode has decent performance in terms of sensitivity, detection limit, and selectivity. The detection limit of 0.08 µM and sensitivity of 2.47 µA/µM.cm² were obtained using this modified electrode.

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水热法制备α-MnO2/N-rGO复合修饰电极用于联氨传感

本研究采用水热法合成了二氧化锰/氮掺杂的还原性氧化石墨烯（α-MnO2/N-rGO）复合材料。采用粉末x射线衍射仪（XRD）、能量色散x射线分析（EDX）和扫描电镜（SEM）等方法对合成的α-MnO2/N-rGO的理化性质进行了表征。合成的α-MnO2/N-rGO进一步作为催化剂用于肼（Hz）传感器的制备。采用滴铸法制备α-MnO2/N-rGO修饰网印碳（SPC）电极。采用线性扫描伏安法（LSV）测定Hz，结果表明α-MnO2/N-rGO/SPC电极具有良好的灵敏度、检出限和选择性。检测限为0.08µM，灵敏度为2.47µA/µM。使用该修饰电极可获得Cm2。

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来源期刊

Journal of Solid State Electrochemistry 工程技术-电化学

CiteScore

4.80

自引率

4.00%

发文量

227

审稿时长

4.1 months

期刊介绍： The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry. The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces. The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis. The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.