Making method and application of CdS sensitized TiO2 environmental estrogen photoelectrochemical sensor

Abstract

The invention relates to a making method and an application of a CdS sensitized TiO2 environmental estrogen photoelectrochemical sensor. The method uses TiO2 as an antigen capture substrate material, a CdS photoelectric active material is in situ generated on the surface of a Cd2<+> functional TiP nanomaterial maker modified electrode through a direct Na2S dropping technology, and CdS is irritated by an LED lamp of visible light wavelength to be converted to a photoelectric current signal. The substrate material TiO2 can be well matched with CdS energy band, so the photocurrent conversion signal of CdS is further improved, thereby the competitive photoelectrochemical immunosensor for ultra sensitive detection of estradiol, estriol, diethylstilbestrol, bisphenol A, nonylphenol, oestrone and other environmental pollutants is made.

Description

technical field

[0001] The invention relates to a CdS sensitized TiO 2 Preparation method and application of photoelectrochemical sensor for environmental estrogen, specifically related to an in-situ generation of CdS sensitized TiO 2 The invention discloses a preparation method and application of a competitive environmental estrogen photoelectrochemical biosensor, belonging to the technical field of new functional materials and environmental pollutant biosensing detection. Background technique

[0002] With the rapid development of modern industry and agriculture, a large number of environmentally harmful substances have entered the human living environment along with human production activities, causing great harm to human health. Environmental estrogen refers to chemical substances that exist in the environment and have estrogen-like activity in organisms. After entering the human body, they can produce environmental toxins that mimic estrogen. Trace estrogen in the env...