Summary of the invention
The object of the invention is to for the existing defective of prior art and satisfying the market needs, provide a kind of titanium dioxide optical catalyst of black Detitanium-ore-type simple, the expensive low novel preparation method of productive rate.
Black octahedrite type titanium dioxide photocatalyst provided by the present invention, adopting glacial acetic acid and acid amides is solvent, the metal lithium salts is auxiliary agent, and use the titanium sheet to be the titanium source, add ionic liquid as structure directing agent, utilize the solvent-thermal method one-step synthesis, prepared product cut size is in about 100nm, is black than other its color of titanium dioxide.It demonstrates the performance of good degradating organic dye under visible light.
The gained catalyzer has the premium properties of efficient degradation lower concentration organic dye, and degraded has better effects to phenols sewage.
A kind of preparation method of visible light-responded black titanium dioxide photocatalyst comprises the steps:
1) be transferred in 50mL tetrafluoroethylene water heating kettle after adding a certain amount of Lithium acetate dihydrate to stir to clarify in 30mL glacial acetic acid and amide solvent, add the titanium sheet as the titanium source, and add the 1-methyl of 2mL-3-tetrafluoroborate ionic liquid;
2) water heating kettle is reacted 8-48h under 150-220 ℃ of condition, after deionized water and ethanol respectively wash three times, obtain the titanium dioxide optical catalyst of the Detitanium-ore-type of black at 80 ℃ of lower vacuum-drying 12h.
In step 1), in 30mL glacial acetic acid and acid amides mixed solvent, the volume of each component is: 1-2:2-1.Preferred ratio has: glacial acetic acid 10mL, acid amides 20mL; Glacial acetic acid 12mL, acid amides 18mL; Glacial acetic acid 15mL, acid amides 15mL; Glacial acetic acid 18mL, acid amides 12mL; Glacial acetic acid 20mL, acid amides 10mL.
Described acid amides is a kind of in methane amide, ethanamide, DMF, N,N-dimethylacetamide and benzamide.
In step 1), described Lithium acetate dihydrate quality is 0.2-1.0g, and preferred Lithium acetate dihydrate quality is 0.2g, 0.4g, 0.6g and 1.0g, and more preferred Lithium acetate dihydrate quality is 0.6g.
Step 2) in, the Heating temperature of preferred water heating kettle is 150 ℃, 180 ℃, 200 ℃, 220 ℃, and the reaction times is 8h, 12h, 24h, 48h.The more preferred reaction times is 24h.
The titanium dioxide optical catalyst that the present invention makes is applied to degradation of dye waste water, and described dyestuff comprises tropeolin-D, methylene blue, rhodamine B, fluorescent yellow, Congo red.
The titanium dioxide optical catalyst that the present invention makes is applied to the degrading phenol material, described aldehydes matter comprises phenol, 4-chlorophenol (4CP), 2-chlorophenol (2CP), 4-chloro-3-methylphenol (4C3MP), 2,4-chlorophenesic acid (2,4-DCP), 2,4, the 6-Trichlorophenol (2,4,6-TCP) and pentachlorophenol (PCP).
The product of the present invention's preparation carries out structural characterization by following means: adopt the X-ray diffraction of measuring on Rigaku Rigaku D/Max-RB type X-ray diffractometer to carry out the structural analysis of sample; The stereoscan photograph that adopts Japanese JEOL JSM-6380LV type scanning electron microscope to obtain, the transmission electron microscope photo that adopts Japanese JEOL JEM-2100 type transmission electron microscope to obtain.
The present invention compared with prior art, have the following advantages and outstanding effect: chemical reagent used in the present invention is common agents, cheap and easy to get, method technique is simple, and anatase phase titanium dioxide is extended to visible light-responded scope.Simultaneously, this photocatalyst is at visible luminous energy degraded lower concentration waste water from dyestuff, and demonstrates equally high reactivity in the system that lower concentration waste water from dyestuff and aldehydes matter mix.
Embodiment
Be doing further in detail, illustrating clearly and completely of how realizing below in conjunction with specific embodiment to the present invention, listed embodiment only is further described the present invention, and is not thereby limiting the invention:
Embodiment 1
Add in 12mL glacial acetic acid and 18mL methane amide and be transferred in 50mL tetrafluoroethylene reactor after the 0.2g Lithium acetate dihydrate stirs to clarify, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 8h under 180 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 2
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.2g Lithium acetate dihydrate to stir to clarify in 18mL glacial acetic acid and 12mL methane amide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 12h under 180 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 3
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.2g Lithium acetate dihydrate to stir to clarify in 10mL glacial acetic acid and 20mL methane amide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 24h under 180 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 4
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.4g Lithium acetate dihydrate to stir to clarify in 12mL glacial acetic acid and 18mL methane amide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 48h under 150 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 5
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.4g Lithium acetate dihydrate to stir to clarify in 18mL glacial acetic acid and 12mL methane amide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 8h under 200 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 6
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.4g Lithium acetate dihydrate to stir to clarify in 10mL glacial acetic acid and 20mL methane amide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 12h under 200 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 7
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.6g Lithium acetate dihydrate to stir to clarify in 12mL glacial acetic acid and 18mL methane amide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 8h under 150 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 8
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.6g Lithium acetate dihydrate to stir to clarify in 18mL glacial acetic acid and 12mL methane amide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 24h under 200 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 9
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.6g Lithium acetate dihydrate to stir to clarify in 10mL glacial acetic acid and 20mL methane amide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 8h under 220 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 10
Be transferred in 50mL tetrafluoroethylene reactor after adding the 1.0g Lithium acetate dihydrate to stir to clarify in 12mL glacial acetic acid and 18mL methane amide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 48h under 150 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 11
Be transferred in 50mL tetrafluoroethylene reactor after adding the 1.0g Lithium acetate dihydrate to stir to clarify in 18mL glacial acetic acid and 12mL methane amide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 8h under 220 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 12
Be transferred in 50mL tetrafluoroethylene reactor after adding the 1.0g Lithium acetate dihydrate to stir to clarify in 10mL glacial acetic acid and 20mL methane amide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 12h under 150 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 13
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.2g Lithium acetate dihydrate to stir to clarify in 12mL glacial acetic acid and 18mL N,N-dimethylacetamide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 8h under 180 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 14
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.2g Lithium acetate dihydrate to stir to clarify in 18mL glacial acetic acid and 12mL N,N-dimethylacetamide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 12h under 180 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 15
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.2g Lithium acetate dihydrate to stir to clarify in 10mL glacial acetic acid and 20mL N,N-dimethylacetamide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 24h under 180 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 16
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.4g Lithium acetate dihydrate to stir to clarify in 12mL glacial acetic acid and 18mL ethanamide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 48h under 150 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 17
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.4g Lithium acetate dihydrate to stir to clarify in 18mL glacial acetic acid and 12mL N,N-dimethylacetamide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 8h under 200 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 18
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.4g Lithium acetate dihydrate to stir to clarify in 10mL glacial acetic acid and 20mL ethanamide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 12h under 200 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 19
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.6g Lithium acetate dihydrate to stir to clarify in 12mL glacial acetic acid and 18mL ethanamide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 8h under 150 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 20
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.6g Lithium acetate dihydrate to stir to clarify in 18mL glacial acetic acid and 12mL ethanamide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 24h under 200 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 21
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.6g Lithium acetate dihydrate to stir to clarify in 10mL glacial acetic acid and 20mL ethanamide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 8h under 220 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 22
Be transferred in 50mL tetrafluoroethylene reactor after adding the 1.0g Lithium acetate dihydrate to stir to clarify in 12mL glacial acetic acid and 18mL ethanamide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 48h under 150 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 23
Be transferred in 50mL tetrafluoroethylene reactor after adding the 1.0g Lithium acetate dihydrate to stir to clarify in 18mL glacial acetic acid and 12mL ethanamide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 8h under 220 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 24
Be transferred in 50mL tetrafluoroethylene reactor after adding the 1.0g Lithium acetate dihydrate to stir to clarify in 10mL glacial acetic acid and 20mL ethanamide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 12h under 150 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 25
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.2g Lithium acetate dihydrate to stir to clarify in 12mL glacial acetic acid and 18mL DMF, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 8h under 180 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 26
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.2g Lithium acetate dihydrate to stir to clarify in 18mL glacial acetic acid and 12mL DMF, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 12h under 180 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 27
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.2g Lithium acetate dihydrate to stir to clarify in 10mL glacial acetic acid and 20mL DMF, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 24h under 180 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 28
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.4g Lithium acetate dihydrate to stir to clarify in 12mL glacial acetic acid and 18mL DMF, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 48h under 150 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 29
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.4g Lithium acetate dihydrate to stir to clarify in 18mL glacial acetic acid and 12mL DMF, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 8h under 200 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 30
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.4g Lithium acetate dihydrate to stir to clarify in 10mL glacial acetic acid and 20mL DMF, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 12h under 200 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 31
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.6g Lithium acetate dihydrate to stir to clarify in 12mL glacial acetic acid and 18mL DMF, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 8h under 150 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 32
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.6g Lithium acetate dihydrate to stir to clarify in 18mL glacial acetic acid and 12mL DMF, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle was reacted 24 hours under 200 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 33
Be transferred in 50mL tetrafluoroethylene reactor after adding the 0.6g Lithium acetate dihydrate to stir to clarify in 10mL glacial acetic acid and 20mL DMF, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 8h under 220 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 34
Be transferred in 50mL tetrafluoroethylene reactor after adding the 1.0g Lithium acetate dihydrate to stir to clarify in 12mL glacial acetic acid and 18mL DMF, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 48h under 150 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
Embodiment 35
Be transferred in 50mL tetrafluoroethylene reactor after adding the 1.0g Lithium acetate dihydrate to stir to clarify in 18mL glacial acetic acid and 12mL benzamide, add the titanium sheet as the titanium source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 8h under 220 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the titanium dioxide optical catalyst of the Detitanium-ore-type of black at 80 ℃ of lower vacuum-drying 12h.
Embodiment 36
Be transferred in 50mL tetrafluoroethylene reactor after adding the 1.0g Lithium acetate dihydrate to stir to clarify in 10mL glacial acetic acid and 20mL benzamide, add the titanium sheet as the source, and add 2mL1-methyl-3-tetrafluoroborate ionic liquid.Water heating kettle is reacted 12h under 150 ℃ of conditions; After deionized water and ethanol respectively wash three times, obtain the black octahedrite type titanium dioxide photocatalyst at 80 ℃ of lower vacuum-drying 12h.
What this method was synthetic as can be drawn from Figure 1 is the titanium dioxide of Detitanium-ore-type.
As can be seen from Figure 2 Electronic Speculum figure be cluster together.
Can obtain this kind material from Fig. 3 is monocrystalline.
Black titanium dioxide has good activity at degradation of contaminant as can be seen from Figure 4.