Method of adopting electrochemical deposition to prepare patterned orderly alpha-Fe2O3 nanoparticle array

Abstract

A method of adopting electrochemical deposition to prepare a patterned orderly alpha-Fe2O3 nanoparticle array includes: adopting an electrochemical workstation, using ITO conductive substrate after laser interference photoetching as a working electrode, a saturated calomel electrode as a reference electrode, a high-purity iron sheet as a pair electrode and a mixed solution of FeCl2 and FeCl3 as an electrolyte, adopting a triphase electrode system to soak the working electrode, the pair electrode and the reference electrode in the electrolyte at the same time, and setting needed temperature for electrochemical deposition; adopting a timing current method to electrochemically deposit on the working electrode to obtain the patterned orderly alpha-Fe2O3 nanoparticle array having high dispersity. Double-beam single-exposure is utilized to pre-pattern the electrodes, and the nanoparticle array of a large-scale patterned orderly structure is prepared. A cathode electrodeposition method is used in the process of electrochemical deposition, equipment is simple, preparation cost is low, and high-temperature heating or annealing treatment is not needed; used chemicals are nontoxic and harmless, and the prepared patterned orderly alpha-Fe2O3 nanoparticle array is high in repeatability and stability.

Description

technical field [0001] The invention relates to a method for preparing patterned ordered α-Fe by electrochemical deposition 2 o 3 The method for nano particle array belongs to the technical field of nano material preparation. Background technique [0002] In the 20th century, the new discipline of nanotechnology was born. Nanoscience and technology is an interdisciplinary subject that studies the laws and characteristics of the movement of molecules, atoms and electrons at the nanoscale. The ultimate goal of human research and development is to explore the microscopic world. And directly manipulate or control individual atoms according to their own needs. Nanotechnology has been widely concerned by scientists since it was proposed, and has developed rapidly in just a few decades. As a branch of nanotechnology, nanomaterials has become a frontier and hotspot of scientific research because of its theoretical significance and great potential in application. Among them, iron ...

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Problems solved by technology

[0004] There are still many unsolved problems in the practical application of iron oxide nanoparticles, for example, Fe 3 o 4 Due to their magnetism and large surface energy, magnetic nanoparticles are easy to agglomerate,

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