Sn-doped TiO2/CNTs/WO3 composite photocatalyst and preparation method thereof
A technology of catalyst and composite light, applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve the problem of low photocatalytic efficiency and improve photocatalytic efficiency , large specific surface area, and the effect of promoting charge transfer rate
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Embodiment 1
[0034] First add 0.08 parts by weight of tin chloride and 0.03 parts by weight of ammonium metatungstate to a certain amount of distilled water to maintain the concentrations at 0.2mol L -1 and 8mmol·L -1 , stirred for 10 min, the resulting solution was stirred with 2.4 parts by weight of absolute ethanol for 30 min, and fully dissolved to obtain solution A.
[0035] b) Stir 0.001 parts by weight of the single-walled carbon nanotube dispersion with a magnetic stirrer for 30 minutes to obtain solution B, wherein the weight concentration of single-walled carbon nanotubes is 10 mg·mL -1 .
[0036] c) 2.4 parts by weight of butyl titanate was added dropwise and stirred into 7.2 parts by weight of absolute ethanol and kept stirring for 30 minutes to obtain solution C.
[0037] d) Under continuous stirring, slowly add solution A and solution B into solution C, mainly control the weight ratio of water, butyl titanate and absolute ethanol in the mixed solution to be 1:2:8, and then ...
Embodiment 2
[0041] a) First add 0.16 parts by weight of tin chloride and 0.06 parts by weight of ammonium metatungstate to distilled water, maintain the concentrations at 0.4mol L-1 and 16mmol L-1 respectively, stir for 10min, and mix the obtained solution with 4.8 wt. Part of absolute ethanol was stirred for 30min, and solution A was obtained after fully dissolving.
[0042]b) Stir 0.02 parts by weight of the single-walled carbon nanotube dispersion with a magnetic stirrer for 30 minutes to obtain a solution B, wherein the weight concentration of the single-walled carbon nanotubes is 10 mg·mL −1 .
[0043] c) 4.8 parts by weight of butyl titanate was added dropwise and stirred into 14.4 parts by weight of absolute ethanol and continuously stirred for 30 minutes to obtain solution C.
[0044] d) Under continuous stirring, slowly add solution A and solution B into solution C, mainly control the weight ratio of water, butyl titanate and absolute ethanol in the mixed solution to be 1:4:8, an...
Embodiment 3
[0048] a) Add 0.12 parts by weight of tin chloride and 0.05 parts by weight of ammonium metatungstate to distilled water, maintain the concentrations at 0.3 mol·L-1 and 12 mmol·L-1 respectively, stir for 10 minutes, and mix the obtained solution with 3.6 parts by weight Part of absolute ethanol was stirred for 30min, and solution A was obtained after fully dissolving.
[0049] b) Stir 0.01 parts by weight of the single-walled carbon nanotube dispersion liquid with a magnetic stirrer for 30 minutes to obtain a solution B, wherein the weight concentration of the single-walled carbon nanotubes is 10 mg·mL −1 .
[0050] c) 3.6 parts by weight of butyl titanate was added dropwise and stirred into 10.8 parts by weight of absolute ethanol and kept stirring for 30 minutes to obtain solution C.
[0051] d) Under continuous stirring, slowly add solution A and solution B into solution C, mainly control the weight ratio of water, butyl titanate and absolute ethanol in the mixed solution t...
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