Electrochemical detection ciprofloxacin by waste soybean straw derives biochar: Performance and structure-property relationship study

Electrochemical sensor is a rapid and sensitive method for the detection of antibiotics in water. Biochar derived from waste biomass is a potential material for the preparation of electrochemical sensors. In this study, four kinds of biochar with different specific surface area, pore structure and c...

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Bibliographic Details
Published in:Journal of alloys and compounds 2025-01, Vol.1010, p.177127, Article 177127
Main Authors: Zheng, Zhishuo, Lu, Xi, Gao, Xiang, Wang, Peng, Liu, Zhibao, Gai, Ligang, Ma, Hongfang
Format: Article
Language:English
Subjects:
Biochar
Ciprofloxacin
Electrochemical sensor
Structure-property relationship
Waste biomass
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Summary:Electrochemical sensor is a rapid and sensitive method for the detection of antibiotics in water. Biochar derived from waste biomass is a potential material for the preparation of electrochemical sensors. In this study, four kinds of biochar with different specific surface area, pore structure and chemical composition were prepared by using ZnCl2 and KOH as activators at 500℃ and 900℃ respectively, and electrochemical sensors were prepared by using them as electrode materials to detect ciprofloxacin (CIP) in water. The ZnCl2 activated materials contain a large number of mesoporous structures, while the KOH activated materials are mainly microporous. The specific surface area of the material prepared at 900℃ is greater than that of the material prepared at 500℃. Differential pulse voltammetry results indicated the ZnBC-900℃ exhibited the best electrochemical detection performance for CIP. The linear range of CIP detection was 0.08–10 µM and the LOD was 0.069 µM. The fabricated sensor also exhibited excellent selectivity, stability and practical application. This study also indicated that the high specific surface area and mesoporous structure is more conducive to CIP detection. •Four kinds of biochar with different microstructure and chemical composition were prepared.•The linear range for CIP detection by ZnBC-900℃was 0.08–10 µM and the LOD was 0.069 µM.•High specific surface area and mesoporous structure is more conducive to CIP detection.•The fabricated sensor exhibited excellent selectivity, stability and practical application.
ISSN:0925-8388
DOI:10.1016/j.jallcom.2024.177127