Highly efficient Z-scheme CeO2/Bi2MoO6 heterojunction strengthened by redox mediator for photoelectrochemical detection of tetracycline with enhanced sensitivity

Li Li; Yanyu Xie; Chuanfa Luo; Guanwei Pen; Zi Min; Xigen Huang; Rumin Fu; Yansha Gao; Zongde Wang; Limin Lu

doi:10.1016/j.foodchem.2024.141893

Highly efficient Z-scheme CeO₂/Bi₂MoO₆ heterojunction strengthened by redox mediator for photoelectrochemical detection of tetracycline with enhanced sensitivity

Food Chem. 2025 Feb 15;465(Pt 1):141893. doi: 10.1016/j.foodchem.2024.141893. Epub 2024 Nov 8.

Authors

Li Li¹, Yanyu Xie¹, Chuanfa Luo¹, Guanwei Pen¹, Zi Min¹, Xigen Huang¹, Rumin Fu², Yansha Gao¹, Zongde Wang³, Limin Lu⁴

Affiliations

¹ East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species 2024SSY04093, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Forestry, Jiangxi Agricultural University, Nanchang 330045, PR China.
² East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species 2024SSY04093, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Forestry, Jiangxi Agricultural University, Nanchang 330045, PR China. Electronic address: rmfu@jxau.edu.cn.
³ East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species 2024SSY04093, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Forestry, Jiangxi Agricultural University, Nanchang 330045, PR China. Electronic address: zongdewang@jxau.edu.cn.
⁴ East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species 2024SSY04093, Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Forestry, Jiangxi Agricultural University, Nanchang 330045, PR China. Electronic address: lulimin@jxau.edu.cn.

PMID: 39531966
DOI: 10.1016/j.foodchem.2024.141893

Abstract

Accurate monitoring of antibiotics that pose risks to the environment and human health is essential. The photoelectrochemical system has emerged as a rapid and precise method for detecting environmental pollutants. However, current photoelectrochemical materials made of semiconductors face challenges due to poor photoelectric conversion efficiency. In this study, a Z-scheme CeO₂/Bi₂MoO₆ heterojunction structure was successfully prepared by a cost-effective hydrothermal method. By leveraging built-in electric field and the Ce³⁺/Ce⁴⁺ redox mediator, this heterojunction achieved high photoelectrochemical conversion efficiency and functioned effectively as a sensor for tetracycline (TCH). The designed sensor demonstrated two linear ranges of 0.05-100 nM and 100-300 nM with an ultra-low detection limit of 15.4 pM for TCH. Additionally, the sensor exhibited excellent selectivity and high stability, demonstrating its potential for TCH detection in tap-water and milk samples. This study presents a simple and reliable method for the practical detection of antibiotic residues in environmental and food samples.

Keywords: Heterojunction; Photoelectrochemical detection; Redox mediator; Tetracycline.

Publication types

Evaluation Study

MeSH terms

Animals
Anti-Bacterial Agents* / analysis
Anti-Bacterial Agents* / chemistry
Bismuth* / chemistry
Cerium* / chemistry
Electrochemical Techniques* / instrumentation
Electrochemical Techniques* / methods
Food Contamination / analysis
Limit of Detection*
Milk* / chemistry
Molybdenum / chemistry
Oxidation-Reduction*
Photochemical Processes
Tetracycline* / analysis
Tetracycline* / chemistry

Substances

Cerium
Bismuth
Tetracycline
ceric oxide
Anti-Bacterial Agents
Molybdenum
Bi(2)MoO(6)