Three-dimensional carbon fabric/nickel iron layered hydroxide coated cobaltosic oxide nano-wire composite material, as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of dopamine and uric acid, and discloses a three-dimensional carbon fabric / nickel iron layered hydroxide coated cobaltosic oxide nano-wire composite material, as well as a preparation method and application thereof. The preparation method comprises the following steps: 1, reacting a carbon cloth in nitric acid having a concentration of 3mol / L for 2 hours to prepare a functional three-dimensional carbon cloth; 2, soaking the functional three-dimensional carbon cloth in mixture of cobalt nitrate, urea and ammonium fluoride, reacting for 6-8 hours, cooling, washing, drying, and calcining the dried product in a tube furnace in presence of nitrogen at 400 DEG C for 2 hours; and 3, reacting for 100 seconds at a working voltage of negative 1.0V by using the three-dimensional carbon cloth / cobaltosic oxide nano-wire array composite material as a work electrode, and washing with deionized water to prepare the composite material. The preparation methodis simple, can be used for quickly and efficiently detecting dopamine and uric acid, and has a wider linear detection range and lower detection limit.

Description

technical field [0001] The invention relates to the technical field of detection of dopamine and uric acid, in particular to a three-dimensional carbon cloth / nickel-iron layered hydroxide-coated tricobalt tetroxide nanowire composite material and its preparation method and application. Background technique [0002] Dopamine (DA) and uric acid (UA) play an important role in the metabolism of organisms. Dopamine (DA) is an important catechin neurotransmitter in the nervous center of mammals. The change or imbalance of its concentration will lead to the occurrence of diseases such as schizophrenia and Parkinson's. Uric acid (UA) is the final product of metabolism in the human body. Excessive uric acid content in the human body will lead to hyperuricemia, which can induce diseases such as gout and kidney failure. It is well known that dopamine (DA) and uric acid (UA) generally coexist in biological matrices. Therefore, finding a suitable method for simultaneous detection and a...

AI Technical Summary

Problems solved by technology

Traditional electrode preparation requires the use of binders to modify pre-prepared catalysts on the surface of glassy carbon electrodes. This process is not only complicated and cumbersome, but also the use of organic binders will occupy a certain amount of catalytic active sites, weakening the Catalytic properties of electrode materials

In addition, during the electrochemical reaction, the electrode material is easily detached from the electrode surface, which greatly reduces the stability and repeatability of the electrochemical sensor.

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