A kind of preparation method of tio2/carbon nanotube/ni optoelectronic active composite electrode
A carbon nanotube, photoelectric active technology, applied in the field of electrodes, can solve the problems of poor contact and the inability to fully play the role of CNTs electron transport.
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[0032] NiO-TiO 2 Precursor: NiO-TiO prepared by sol-gel method 2 Catalyst precursor. Dissolve 126g citric acid in 220ml absolute ethanol and add 10ml HNO 3 , And then slowly add 68ml of tetrabutyl titanate dropwise, stir for 2h, make it fully complex with citric acid, and obtain mixed solution A. According to NiO in the finished NiO-TiO 2 The molar fraction is 1% in the preparation of Ni(NO 3 ) 2 Solution B is 180ml, and solution B is added dropwise to mixed solution A under vigorous stirring. Continue stirring for 4 hours to fully complex the citric acid with titanium and nickel to obtain NiO-TiO 2 Precursor.
[0033] Pretreatment of the nickel sheet electrode substrate: first polish the nickel sheet with sandpaper to remove the oxides on the surface, and then use 10% NaOH aqueous solution and 30% acetone ethanol solution to ultrasonically clean for 0.5h, and dry at 100°C; the preparation concentration is 0.8 mmol / L Fe(NO 3 ) 3 Alcohol solution; use spin coating method to coat ...
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