Preparation method of Ni single atom/oxygen defect copper tungstate photo-anode
An oxygen deficiency, copper tungstate technology, applied in catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. Anode, semiconductor metal single-atom agglomeration, etc., to shorten the charge transfer distance, improve the light absorption efficiency, and increase the photocurrent density.
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Embodiment 1
[0021] A preparation method of a Ni single atom / oxygen-deficient copper tungstate photoanode, the specific steps are as follows: use a pipette gun to pipette 100 μL of polyvinyl alcohol, and spin-coat it on the surface of FTO glass to enhance the viscosity of the FTO surface. Fix the FTO glass on the roller of the static spinning device. Weigh 0.6g of polyacrylonitrile powder and add it to 10ml of dimethylformamide solution, stir overnight, then transfer to an electrospinning machine, pass 18V high voltage, the spinning solution is drawn into nanofibers, and the nanofibers on the surface of FTO are collected. Fibers are pretreated at low temperature at 250°C, followed by high-temperature carbonization at 900°C to obtain carbon nanofiber electrodes (CNFs); the aqueous precursor solution of copper acetate and ammonium tungstate is prepared, transferred to the reaction kettle, and the CNFs electrode is added to the precursor solution, sealed, placed in a constant temperature dryi...
Embodiment 2
[0024] A preparation method of a Ni single atom / oxygen-deficient copper tungstate photoanode, the specific steps are as follows: use a pipette gun to pipette 100 μL of polyvinyl alcohol, and spin-coat it on the surface of FTO glass to enhance the viscosity of the FTO surface. Fix the FTO glass on the roller of the static spinning device. Weigh 1.0g of polyacrylonitrile powder and add it to 10ml of dimethylformamide solution, stir overnight, then transfer to an electrospinning machine, pass 15V high-voltage electricity, the spinning solution is drawn into nanofibers, and the nanofibers on the surface of FTO are collected. Fibers are pretreated at low temperature at 250°C, followed by high-temperature carbonization at 900°C to obtain carbon nanofiber electrodes (CNFs); the aqueous precursor solution of copper nitrate and ammonium tungstate is prepared, transferred to the reaction kettle, and the CNFs electrode is added to the precursor solution, sealed, and placed in a 150°C con...
Embodiment 3
[0027] A preparation method of a Ni single atom / oxygen-deficient copper tungstate photoanode, the specific steps are as follows: use a pipette gun to pipette 100 μL of polyvinyl alcohol, and spin-coat it on the surface of FTO glass to enhance the viscosity of the FTO surface. Fix the FTO glass on the roller of the static spinning device. Weigh 0.7g of polyacrylonitrile powder and add it to 10ml of dimethylformamide solution, stir overnight, then transfer to an electrospinning machine, pass 18V high-voltage electricity, the spinning solution is drawn into nanofibers, and the nanofibers on the surface of FTO are collected. The fibers are pretreated at low temperature at 250°C, followed by high-temperature carbonization at 950°C to obtain carbon nanofiber electrodes (CNFs); the aqueous solution of precursors of copper acetate and ammonium tungstate is prepared, transferred to the reaction kettle, and the CNFs electrodes are added to the precursor solution, sealed, placed in a con...
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