p-n-type bi2o3/bipo4 heterostructure visible light-response photocatalytic film material and preparation method thereof
A thin-film material, visible light technology, applied in the field of photocatalytic materials, can solve problems such as reducing the degree of electron-hole recombination
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Embodiment 1
[0059] The FTO with a size of 10 mm × 50 mm × 2 mm was ultrasonically cleaned with acetone, absolute ethanol and deionized water for 5 minutes in sequence, and then it was taken out to dry and placed flat for use.
[0060] (1) BiPO 4 Preparation of powder: 5ml containing 2mmol of Bi(NO 3 ) 3 with 2mmolNH 4 h 2 PO 4 The ethylene glycol solution was dissolved in 65 ml of distilled water. A homogeneous solution A was formed by magnetic stirring, and placed in air for 12h. After precipitation, cleaning, drying, calcination at 900°C for 2 hours, and grinding, the white BiPO 4 powder.
[0061] (2) Precursor BiPO 4 Preparation of thin film: mix 12mg KI with 48mg BiPO 4 The powder was dissolved in 30ml of acetone, and after stirring and ultrasonication, a uniform colloidal solution B was formed as the electrolyte solution. After the conductive substrate was cleaned and dried, it was used as the cathode and the anode respectively, and electrophoretic deposition was carried ou...
Embodiment 2
[0074] Repeat the operation steps of embodiment 1, difference is that Bi 2 o 3 / BiPO 4 The electrodeposition time in solution C was reduced to 5 min during the preparation of the thin film.
[0075] Bi prepared under the conditions of this example 2 o 3 / BiPO 4 The RhB decolorization rate of the film was 60%.
Embodiment 3
[0077] Repeat the operation steps of embodiment 1, difference is that Bi 2 o 3 / BiPO 4 The electrodeposition time in solution C was reduced to 1 min during the film preparation.
[0078] Bi prepared under the conditions of this example 2 o 3 / BiPO 4 The RhB decolorization rate of the film was 20%.
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