BiPO4/BiOCl/g-C3N4 heterojunction based photoelectrochemical sensing of dopamine in serum samples

作者：Fu, Qian; Wang, Chenxi; Chen, Jia; Wang, Yilin; Li, Chunyan; Xie, Yixi; Zhao, Pengcheng^*; Fei, Junjie^*

来源：Colloids and Surfaces A: Physicochemical and Engineering Aspects , 2023, 656: 130456.

DOI：10.1016/j.colsurfa.2022.130456

• Photoelectrochemical sensor
• Bismuth -based oxides
• Carbon nitride
• Heterojunction
• DA

Dopamine is an important neurotransmitter that has a crucial impact on the physiological health of the human body. Consequently, it is necessary to establish a highly selective and sensitive method for the determination of dopamine levels in serum. In this work, g-C3N4 and BiPO4/BiOCl (BPCl) were used as optoelectronic materials to construct a novel dopamine photoelectrochemical sensor. Moreover, the optoelectronic materials were charac-terized by scanning electron microscopy, X-ray photoelectron spectroscopy, UV-Vis diffuse reflectance spec-troscopy and steady-state fluorescence spectroscopy. Meanwhile, the photoelectrochemical performance of the modified electrodes with different materials was investigated, and the results showed that BPCl/C3N4/GCE has excellent photoelectrochemical performance. Concomitantly, the dopamine photoelectrochemical sensor also has a wide detection range (0.05-10 mu M) and limit of detection (LOD = 0.023 mu M). Furthermore, it has good reproducibility, selectivity and stability, which can be used in the actual sample detection of serum.

• 单位
  湘潭大学