One-pot synthesis of stable and fast Bi2O2S/Bi2O3 heterojunction self-powered photoelectrochemical sensors for sensitive detection of tetracycline

作者：Baolong Shi, Bing‐Yu Chen, Xinzhe Yan, Huyue Cao, Hao Sun, Dalei Wang, Changwei Bi, Chao Wang, Yue‐Yue Wang, Chao‐Qing Dai, Wei Liu · 发表于：Materials & Design · 年份：2024 · DOI：10.1016/j.matdes.2024.112781 · 被引用次数：31 · 研究领域：Advanced biosensing and bioanalysis techniques、Advanced Photocatalysis Techniques、Gas Sensing Nanomaterials and Sensors

The overuse of tetracycline, a broad-spectrum antibiotic, has posed a severe threat to both the ecological environment and public safety. This paper presents the one-step synthesis of Bi2O2S/Bi2O3 heterojunctions utilizing a simple and environmentally friendly chemical synthesis method. These heterojunctions were subsequently employed in the fabrication of photoelectrochemical sensors tailored for tetracycline detection. Under optimal conditions, with a bias voltage of 0 V, the sensor manifests exceptional self-powered capability, yielding a photocurrent density of approximately 270nA/cm2. The detection sensitivity for tetracycline spans a wide linear range from 0.1 pM to 200 nM, accompanied by a remarkably low detection limit of 0.5 pM (S/N = 3). Furthermore, the photoelectrochemical sensor demonstrates commendable stability, rapid response characteristics, high selectivity, and consistent detection reproducibility. These findings not only offer a novel opportunity for advancing photoelectrochemical sensors but also present a fresh perspective in the realm of photoelectrochemical sensor development.