科研之友
微信
新浪微博
Facebook
分享链接
摘要
Dopamine (DA), an important neurotransmitter in the central nervous system, is thought to control emotions and the balance of hormones in the human body. A photoelectrochemical sensor based on anatase TiO2 nanoparticles was developed to detect DA under visible light irradiation. The TiO2 nanoparticles were prepared by a previously reported hydrothermal method and the anatase phase was confirmed by X-ray diffraction. Under visible light irradiation, the electrode modified with TiO2 nanoparticles showed a weak photocurrent response in the absence of DA; however, the photocurrent was significantly improved after DA was added to the electrolyte. The proposed photoelectrochemical sensor had a sensitive response to DA with excellent reproducibility, stability and a wide linear range. This sensor may have potential applications in the determination of DA in real samples.
