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Novel dye-sensitized semiconductor composite material electrode

A technology of dye-sensitization and composite materials, which is applied in the field of dye-sensitized semiconductor composite electrodes, can solve the problem of low background signal, achieve the effects of large light absorption range, good stability, and enhanced signal performance

Inactive Publication Date: 2021-10-19
UNIV OF JINAN
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AI Technical Summary

Problems solved by technology

Similar to the detection process of electrochemiluminescence, different forms of excitation and detection signals are used, and the background signal is low. Therefore, photoelectrochemistry may reach a high zero temperature comparable to electrochemiluminescence

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Preparation of TiO2 nanorod: fluorine doped tin oxide (FTO) electrode substrate size is 2 cm × 5 cm first with acetone, ethanol and deionized water, respectively, washed 15 min with ultrasonic waves, and then dried in the air. 50% HCl solution was mixed with 50 mL, 10 min was mixed, titanate tetrabutyate 0.6 ml, stirred for 5 min, and put the pre-treated FTO and 25 mL formulated solution 170 ° C, time 4 H to form a nanorod;

[0017] (2) Bi2S3 / TiO2 / FTO: Ethylene glycol solution (80 mm, 50 μl) of nitrate (III), dried on the TiO2 / FTO substrate and 120 ° C, in order to The upper prepared layer was annealed in the air in 500 ° C in air 3 h, and the electrode was placed in a pressure of 50 mL in a pressure of 50 mL, and the thiourea (7.9 mmol) was added to deionized water (30 mL). The reaction solution was prepared and transferred to the reaction kettle, 140 ° C was heated 4 h, and the electrode was dried at 80 ° C;

[0018] (3) Dye sensitization electrode: Dye sensitiz...

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Abstract

The invention discloses a novel dye-sensitized semiconductor composite material electrode. According to a photoelectric reaction system, dye used by the sensitized electrode expands the light absorption range and enhances light utilization of the system, the recombination of photon-generated carriers is reduced through the injection of a large number of electrons so as to enhance photoelectric signals, and the light absorption and utilization effects of the system are further more excellent through narrow-band-gap Bi2S3 and wide-band-gap TiO2 used by the system. And compared with other systems for gain of the photoelectric system, the electrode has greater advantages and prospects.

Description

Technical field [0001] The present invention relates to the field of photoelectric detection, and more particularly to a new type of dye-sensitized semiconductor composite electrode. Background technique [0002] The electrochemical process under the photochemical process is photochemical, under light irradiation conditions, the electrons are transduced from the ground state to the excited state, and generate charge transfer. Similar to the electrochemical reaction, current flow in the photochemical reaction system. Therefore, the photochemical reaction can convert light energy into chemical or electrical energy, and chemically or electrical energy can be converted to light energy by its inverse process. The physical, chemical interaction between the object to be tested and the photochemical active substance, the relationship between the change in the photovoltaic voltage generated and the concentration of the concentration of the object to be tested, is the basis for the quantif...

Claims

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Application Information

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IPC IPC(8): G01N27/30
CPCG01N27/305
Inventor 颜梅魏全勇张晶李成芳郝梦娇朱彤
Owner UNIV OF JINAN
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