A method for in-situ growth of bismuth nanoparticles on oxide substrates

Abstract

The invention relates to a method for growing bismuth nanoparticles on an oxide substrate in situ. The method comprises the following steps of: adding a bismuth-contained oxide into an aqueous solution of methanol, ethanol or glucose, wherein the bismuth-contained oxide is prepared by using a molten salt method or high-temperature solid-phase method; and then, irradiating the bismuth-contained oxide under ultraviolet light to form the bismuth nanoparticles on the surface of the bismuth-contained oxide, wherein the particle sizes of the bismuth nanoparticles are distributed uniformly. The method has the advantages of mild preparation condition, simple process, low cost and the like; the prepared bismuth nanoparticles are small in particle size and attached to the oxide substrate; the bismuth nanoparticles growing on the oxide substrate in situ by using the method can be used for the nano electron field, the catalytic field and superconducting materials and the like; and the method is simple in process and used for realizing uniform in-situ growth of the bismuth nanoparticles on the surface of the oxide at room temperature through light irradiation.

Description

technical field

[0001] The invention relates to a method for in-situ growth of bismuth nano particles on an oxide substrate, in particular to realize the in-situ growth of bismuth nano particles on the oxide substrate by using a photochemical method. Background technique

[0002] Metal nanoparticles have unique physical and chemical properties and have broad application prospects in catalysis, optoelectronic devices, magnetic materials, coating materials and other fields, so their preparation has been extensively studied. Various gas-phase and liquid-phase-based methods have been used for the preparation of metal nanoparticles, but so far, there are few reports on the preparation of metal nanoparticles by direct reduction of metal oxides at room temperature.

[0003] Photochemical methods have some advantages in the preparation of metal nanoparticles, such as: mild reaction conditions can be carried out at room temperature; green environmental protection can be achieved only...

Images