Preparation method for Zn0.25Cd0.75S/Zn2GeO4 compound visible-light-driven photocatalyst
A visible light and catalyst technology, applied in the field of environmental pollution control, can solve the problems of low electron-hole separation efficiency and narrow light response range, and achieve the effects of improving the light absorption range, the preparation process is easy to operate, and the crystallinity is good.
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Embodiment 1
[0019] Example 1 Zn 2 GeO 4 Preparation of one-dimensional nanowires
[0020] Preparation of Zn by Mixed Solvothermal Method 2 GeO 4 For one-dimensional nanowires, add 1 mM germanium dioxide and 2 mM zinc acetate dihydrate to 75 mL of a mixed solvent of ethylenediamine and deionized water with a volume ratio of 2:1 under magnetic stirring, and add 0.5 g MW =130000 The PVP was uniformly dispersed by ultrasonic wave and stirred for 10 h to obtain a mixed solution; the above mixed solution was transferred to an autoclave and reacted at 180 °C for 18 h; after the autoclave was gradually cooled to room temperature, it was centrifugally precipitated and used After washing with deionized water three times, the product was dried in an oven at 60 °C for 6 h.
Embodiment 2
[0021] Example 2 Zn 2 GeO 4 Preparation of one-dimensional nanowires
[0022] Preparation of Zn by Mixed Solvothermal Method 2 GeO 4 For one-dimensional nanowires, add 2 mM germanium dioxide and 4 mM zinc acetate dihydrate to 75 mL of ethylenediamine and deionized water with a volume ratio of 3:1 under magnetic stirring, and add 1 g MW =130000 The PVP was uniformly dispersed by ultrasonic, and stirred for 10 h to obtain a mixed solution; the above mixed solution was transferred to an autoclave, and reacted for 20 h at 190 °C; after the autoclave was gradually cooled to room temperature, centrifugal precipitation was used to After washing with deionized water three times, the product was dried in an oven at 60 °C for 6 h.
Embodiment 3
[0023] Example 3 Zn 2 GeO 4 Preparation of one-dimensional nanowires
[0024] Preparation of Zn by Mixed Solvothermal Method 2 GeO 4 For one-dimensional nanowires, under magnetic stirring, add 3 mM germanium dioxide and 6 mM zinc acetate dihydrate to 75 mL of a mixed solvent of ethylenediamine and deionized water with a volume ratio of 5:1, and add 2.0 g MW =130000 The PVP was uniformly dispersed by ultrasonic, and stirred for 10 h to obtain a mixed solution; the above mixed solution was transferred to an autoclave, and reacted at 200 °C for 24 h; after the autoclave was gradually cooled to room temperature, centrifuged to precipitate, and After washing with deionized water three times, the product was dried in an oven at 60 °C for 6 h.
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