Method using laser interference to induce electrochemical deposition so as to prepare periodic and patterned Fe3O4 nano particles
A technology of laser interference and nano-particles, which is applied in nano-technology, electrodes, electrolytic coatings, etc., can solve the problems that nano-materials cannot meet the needs of performance research, fine application, rough particle size distribution, etc., and achieve low preparation costs, simple equipment, and raw materials. Easy to get effect
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[0033] The present invention will be described in detail below with reference to specific embodiments.
[0034] like figure 1 As shown, the present invention adopts a simple laser interference-induced electrochemical deposition to prepare patterned Fe 3 O 4 The nanoparticle approach is as follows:
[0035] (1) Preparation of electrodes: the ITO conductive substrate coated with hydrogenated amorphous silicon (a-Si:H) thin film was used as the working electrode; the high-purity iron sheet was used as the counter electrode; and the calomel electrode was used as the reference electrode. The surface area of the ITO conductive substrate is 1 cm 2 , the square resistance is 4Ω, the thickness of the ITO film is 500nm, and the transmittance is 84%; the hydrogenated amorphous silicon (a-Si:H) film is deposited on the surface of ITO by PECVD method, the thickness is 500nm, and the dark state conductivity is 5E- 10S / cm, the photoconductivity under AM1.5G illumination is about 7E-5S / ...
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