The invention discloses a preparation method, a product and application of a CuS / GO / MWCNTs composite
nanoparticle modified
electrode. The method includes the steps that a multi-wall
carbon nanotube isactivated, wherein the multi-wall
carbon nanotube is activated in an H2SO4 / HNO3
mixed solution, diluted, filtered and dried; a CuS / GO / MWCNTs
composite material is prepared, wherein the activated multi-wall
carbon nanotube is weighed and dissolved in water,
graphene oxide colloidal
sol is added, a uniform solution is obtained through
ultrasonic dispersion,
copper nitrate,
polyvinylpyrrolidone andthiourea are added, stirring is performed, heating is performed for a reaction, after the reaction is ended, cooling, rinsing and
drying are performed, and the CuS / GO / MWCNTs
composite material is obtained. With the CuS / GO / MWCNTs composite
nanoparticle modified
electrode, the effect of detecting
hydrogen peroxide is quite good, the threshold of detection is 0.6 microns, the linear detection range is 0.45-60 millimeters, the application potential is lower than 0.31 V, and the detection sensitivity is up to 386 microamperes / {
millimeter*
centimeter <2>}.