Fabrication of CaTiO3 modified glassy carbon electrode-based hydrogen peroxide sensor

IF 2.2 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Journal of the Iranian Chemical Society Pub Date : 2024-06-15 DOI:10.1007/s13738-024-03058-y
Khursheed Ahmad, Theophile Niyitanga, Aarti Pathak, Rais Ahmad Khan, Mohd Quasim Khan
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Abstract

Herein, we reported the construction of hydrogen peroxide (H2O2) sensor using calcium titanate modified screen printed electrode (CaTiO3@SPE). The CaTiO3 has been synthesized via hydrothermal method using calcium nitrate tetrahydrate and titanium butoxide as the Ca and Ti source. The CaTiO3 was characterized by many physiochemical techniques such as powder X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), Brunauer–Emmett–Teller (BET) and scanning electron microscopy (SEM). The XRD analysis revealed the existence of decent crystalline nature in the synthesized material, while EDX results demonstrated its good phase purity. The SEM micrographs suggested that CaTiO3 has flakes-like surface structure. The BET results also indicated that CaTiO3 has specific surface area of 57.6 m2/g. Furthermore, CaTiO3 was used as the electrode material and CaTiO3@SPE has been constructed using drop-casting method. The fabricated CaTiO3@SPE was used for the sensing of H2O2 using cyclic voltammetry and linear sweep voltammetry methods. The CaTiO3@SPE exhibited reasonable limit of detection of 0.08 µM with good selectivity, stability and repeatability.

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制作 CaTiO3 改性玻璃碳电极型过氧化氢传感器
在此,我们报告了利用钛酸钙改性丝网印刷电极(CaTiO3@SPE)构建过氧化氢(H2O2)传感器的情况。钙钛矿是以四水硝酸钙和丁氧化钛为钙钛源,通过水热法合成的。粉末 X 射线衍射(XRD)、能量色散 X 射线光谱(EDX)、Brunauer-Emmett-Teller(BET)和扫描电子显微镜(SEM)等多种理化技术对 CaTiO3 进行了表征。XRD 分析表明合成材料具有良好的结晶性,而 EDX 结果则表明其具有良好的相纯度。扫描电镜显微照片显示 CaTiO3 具有片状表面结构。BET 结果也表明,CaTiO3 的比表面积为 57.6 m2/g。此外,CaTiO3 被用作电极材料,CaTiO3@SPE 采用滴铸方法制成。利用循环伏安法和线性扫描伏安法,将制备的 CaTiO3@SPE 用于检测 H2O2。CaTiO3@SPE 的检测限为 0.08 µM,具有良好的选择性、稳定性和重复性。
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来源期刊
CiteScore
4.40
自引率
8.30%
发文量
230
审稿时长
5.6 months
期刊介绍: JICS is an international journal covering general fields of chemistry. JICS welcomes high quality original papers in English dealing with experimental, theoretical and applied research related to all branches of chemistry. These include the fields of analytical, inorganic, organic and physical chemistry as well as the chemical biology area. Review articles discussing specific areas of chemistry of current chemical or biological importance are also published. JICS ensures visibility of your research results to a worldwide audience in science. You are kindly invited to submit your manuscript to the Editor-in-Chief or Regional Editor. All contributions in the form of original papers or short communications will be peer reviewed and published free of charge after acceptance.
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