Controllable preparation method of rare earth doped lanthanum manganese oxide nanotube

Abstract

The invention discloses a controllable preparation method of a rare earth doped lanthanum manganese oxide nanotube. Specifically, the method comprises the steps of: preparing a La(NO3)3 solution and a MnSO4 solution, mixing the two solutions evenly to obtain a solution A, and taking a sodium hydroxide solution as a solution B; alternatively adding the solution A and the solution B with a same volume dropwisely on an anodic alumina membrane (AAM) nanoporous template, making the solution A and the solution B penetrate the nanopores under a negative pressure and unergo a precipitation reaction, heating the formed nanotube of lanthanum manganese hydroxide LaMn(OH)x in a tube furnace, and decomposing the lanthanum manganese hydroxide LaMn(OH)x nanotube to obtain the rare earth doped lanthanum manganese oxide nanotube. The invention combines the AAM template synthesis technology and the vacuum suction filtration technology, utilizes an AAM nanopore channel as a reactor and employs a precipitation reaction principle to prepare the rare earth doped lanthanum manganese (LaMnOx) oxide nanotube. The method has the advantages of simple operation, easy industrial production, and has great application value in the fields of hydrogen storage electrode materials, thermoelectric conversion functional materials, light absorption and light conversion catalytic materials, etc.

Description

[0001] technical field [0002] The invention relates to a controllable preparation method of rare earth doped oxide nanotubes, especially a lanthanum manganese (LaMnO x ) The method for preparing oxide nanotubes belongs to the technical field of preparing inorganic oxide quasi-one-dimensional nanomaterials. Background technique [0003] Since the 4f orbital of rare earth elements is prone to splitting under the influence of the ligand field, and the energy of the 4f and 5d orbitals is very close, it is easy to undergo f-f transition or charge transfer transition, and has rich fluorescence characteristics and the ability to convert ultraviolet or infrared rays into visible light. The hollow structure of quasi-one-dimensional rare-earth-doped oxide nanotubes can provide different contact levels (such as inner and outer surfaces, orifice edges, and tube walls with special structures). Compared with nanoparticles of the same mass, oxide nanotubes have larger Specific surface ar...

AI Technical Summary

Problems solved by technology

The preparation of lanthanum-doped manganese dioxide or lanthanum oxide nanotubes has not been reported