One-pot synthesis and hydrogen peroxide electrochemical sensing of 3D TiO2/MnO2 nanorods assembled microspheres

Haiyan Song; Bilong Li; Zhenyu Cheng; Haobin Hu; Zhijun Li; Luzi Chen; Zhiyi Han; Tingting He; Yani Lu; Xiaoxia Wei; Lihua Huo

doi:10.1007/s00604-024-06356-7

One-pot synthesis and hydrogen peroxide electrochemical sensing of 3D TiO₂/MnO₂ nanorods assembled microspheres

Mikrochim Acta. 2024 Apr 30;191(5):291. doi: 10.1007/s00604-024-06356-7.

Authors

Haiyan Song¹, Bilong Li², Zhenyu Cheng³, Haobin Hu³, Zhijun Li³, Luzi Chen³, Zhiyi Han³, Tingting He³, Yani Lu³, Xiaoxia Wei³, Lihua Huo⁴

Affiliations

¹ Gansu Key Laboratory of Efficient Utilization of Oil and Gas Resources in Longdong, College of Petroleum and Chemical Engineering, Longdong University, Qingyang, 745000, China. haiyan514319614@163.com.
² College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China.
³ Gansu Key Laboratory of Efficient Utilization of Oil and Gas Resources in Longdong, College of Petroleum and Chemical Engineering, Longdong University, Qingyang, 745000, China.
⁴ Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, China.

PMID: 38687386
DOI: 10.1007/s00604-024-06356-7

Abstract

Nanorods assembled 3D microspheres of TiO₂/MnO₂ were prepared via a simple one-pot hydrothermal approach. The resultant composite material exhibited remarkable electrocatalytic activity for hydrogen peroxide (H₂O₂) in comparison to each single component. The electrochemical sensor constructed with TiO₂/MnO₂ exhibited a linear relationship within the range 0.0001-5.6 mmol·L^-1 for H₂O₂. The limit of detection (LOD) and sensitivity for H₂O₂ were 0.03 µmol·L^-1 (S/N = 3) and 316.6 µA (mmol·L^-1)^-1 cm^-2. Moreover, this sensor can be employed to detect trace amount of H₂O₂ in serum and urine samples successfully, supporting an insight and strategy for a more sensitive electrochemical sensor.

Keywords: Electrocatalytic activity; H2O2; Modified glassy carbon electrode; Nanorods assembled microspheres; TiO2/MnO2.

Abstract

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