63results about How to "Improve electrocatalytic efficiency" patented technology

The invention discloses a nano porous copper / Cu(OH)2 nanowire array sensor electrode material and a preparation method thereof, and belongs to the technical field of micro-sensation. The preparation method of the nano porous copper / Cu(OH)2 nanowire array sensor electrode material mainly comprises the following two steps: by taking Cu-Zr-Al amorphous alloy as a precursor, preparing a flexible nano porous copper film of a double-continuous through hole structure by using a chemical alloy removing method; performing controllable growth on a Cu(OH)2 nanowire array on a nano porous copper film substrate by using an alkali oxidation method. The nano composite electrode material disclosed by the invention is of a structure similar to 'sandwich', Cu(OH)2 nanowires are uniformly and densely distributed on the nano porous copper substrate, have directivity and are uniform in morphology, large in internal specific surface area and very high in electric catalytic activity, the nano composite material can be directly used as an electrode material of a non-enzyme glucose sensor, the linear response range for glucose is 0.2-9 mM, the detection sensitivity is 2.09 mA / cm<2>.mM, the detection limit is 200 nM (S / N=-3.6), and the current response time is less than 1 second.

The invention provides a method for removing an organic matter under synergy of visible light photoelectric catalysis and a three-dimensional electrode / electro-fenton. The method comprises the following steps of: by taking titanium-based TIO2 (titanium dioxide) or a visible light modified electrode thereof as a positive electrode and a carbonaceous material as negative electrode; arranging two isolating partitions at the inner sides of the positive electrode and the negative electrode; filling an activated carbon particle electrode or a visible light modified particle electrode thereof between the isolating partitions; aerating the negative electrode by using aerating apparatus; and meanwhile, applying direct-current voltage stabilization and visible light irradiation, thereby forming a visible light photoelectric three-dimensional electrode / electro-fenton system. According to the method, the visible light is led into a three-dimensional electrode / electro-fenton reaction system, so that the proceeding of a fenton reaction is promoted; a photoelectric catalysis action of the visible light with the positive electrode and the particle electrode is performed at the same time. Thus, the energy consumption of the three-dimensional electrode / electro-fenton reaction system is reduced; the synergistic catalytic oxidation effect is generated. As a result, the organic contamination is efficiently and rapidly degraded.