CN111185238B - Copper doped ultra-thin TiO2Nanosheet-loaded cobalt oxime complex composite photocatalyst and preparation method and application thereof - Google Patents
Copper doped ultra-thin TiO2Nanosheet-loaded cobalt oxime complex composite photocatalyst and preparation method and application thereof Download PDFInfo
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- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 239000010941 cobalt Substances 0.000 title claims abstract description 31
- 229910017052 cobalt Inorganic materials 0.000 title claims abstract description 31
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 31
- -1 cobalt oxime Chemical class 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000010949 copper Substances 0.000 title claims description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 13
- 229910052802 copper Inorganic materials 0.000 title claims description 13
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 41
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000002135 nanosheet Substances 0.000 claims abstract description 30
- QPJVMBTYPHYUOC-UHFFFAOYSA-N methyl benzoate Chemical compound COC(=O)C1=CC=CC=C1 QPJVMBTYPHYUOC-UHFFFAOYSA-N 0.000 claims abstract description 22
- XEMRAKSQROQPBR-UHFFFAOYSA-N (trichloromethyl)benzene Chemical compound ClC(Cl)(Cl)C1=CC=CC=C1 XEMRAKSQROQPBR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229940095102 methyl benzoate Drugs 0.000 claims abstract description 11
- 239000000047 product Substances 0.000 claims abstract description 10
- 238000005406 washing Methods 0.000 claims abstract description 10
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 239000012065 filter cake Substances 0.000 claims abstract description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 16
- 239000007787 solid Substances 0.000 claims description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 235000019441 ethanol Nutrition 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000005695 dehalogenation reaction Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- TWBYWOBDOCUKOW-UHFFFAOYSA-N isonicotinic acid Chemical compound OC(=O)C1=CC=NC=C1 TWBYWOBDOCUKOW-UHFFFAOYSA-N 0.000 claims description 6
- 230000001699 photocatalysis Effects 0.000 claims description 6
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 5
- 238000006298 dechlorination reaction Methods 0.000 claims description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 4
- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 claims description 4
- 239000012153 distilled water Substances 0.000 claims description 4
- 150000004820 halides Chemical class 0.000 claims description 4
- 229910021580 Cobalt(II) chloride Inorganic materials 0.000 claims description 3
- JGUQDUKBUKFFRO-CIIODKQPSA-N dimethylglyoxime Chemical compound O/N=C(/C)\C(\C)=N\O JGUQDUKBUKFFRO-CIIODKQPSA-N 0.000 claims description 3
- 238000013032 photocatalytic reaction Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 abstract description 5
- 230000003197 catalytic effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000001291 vacuum drying Methods 0.000 description 3
- 238000003917 TEM image Methods 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000012295 chemical reaction liquid Substances 0.000 description 2
- 239000005515 coenzyme Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 2
- 238000000024 high-resolution transmission electron micrograph Methods 0.000 description 2
- 238000001819 mass spectrum Methods 0.000 description 2
- 238000000985 reflectance spectrum Methods 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- MTJGVAJYTOXFJH-UHFFFAOYSA-N 3-aminonaphthalene-1,5-disulfonic acid Chemical compound C1=CC=C(S(O)(=O)=O)C2=CC(N)=CC(S(O)(=O)=O)=C21 MTJGVAJYTOXFJH-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 125000001160 methoxycarbonyl group Chemical group [H]C([H])([H])OC(*)=O 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/18—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in isocyanide ligands C=N-R or as complexed central atoms
- B01J31/1805—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in isocyanide ligands C=N-R or as complexed central atoms the ligands containing nitrogen
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/18—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in isocyanide ligands C=N-R or as complexed central atoms
- B01J31/1805—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in isocyanide ligands C=N-R or as complexed central atoms the ligands containing nitrogen
- B01J31/181—Cyclic ligands, including e.g. non-condensed polycyclic ligands, comprising at least one complexing nitrogen atom as ring member, e.g. pyridine
- B01J31/1815—Cyclic ligands, including e.g. non-condensed polycyclic ligands, comprising at least one complexing nitrogen atom as ring member, e.g. pyridine with more than one complexing nitrogen atom, e.g. bipyridyl, 2-aminopyridine
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- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
- B01J31/38—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of titanium, zirconium or hafnium
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- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
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- B01J2531/84—Metals of the iron group
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Abstract
The invention relates to copper-doped ultrathin TiO2A nanosheet-loaded cobalt oxime complex composite photocatalyst, and a preparation method and application thereof. Dissolving a proper amount of carboxyl-containing cobalt oxime complex in absolute ethyl alcohol, and adding a proper amount of copper-doped ultrathin TiO2Dispersing nanosheets by ultrasonic, stirring at normal temperature for 24-25h, filtering, washing filter cakes by absolute ethyl alcohol, and drying in vacuum to obtain the target product composite photocatalyst Cu-TiO2-Co. The catalyst can catalyze trichlorotoluene to be completely dechlorinated and converted into methyl benzoate under the drive of visible light.
Description
Technical Field
The invention belongs to the field of catalyst materials, and particularly relates to copper-doped ultrathin TiO2A nanosheet-loaded cobalt oxime complex composite photocatalyst, and a preparation method and application thereof.
Background
Photocatalytic dehalogenation has received much attention in the catalytic field due to its use in the remediation of halogenated organic solvent wastes and organic halogenated pesticides that remain in the soil. Coenzyme B12The derivative thereof has higher catalytic activity in catalytic dehalogenation reaction, but the application of a simulant cobalt oxime complex in photocatalytic dehalogenation reaction is rarely reported.
Disclosure of Invention
The object of the present invention is to utilize coenzyme B12The simulant cobalt oxime complex is immobilized on copper-doped ultrathin TiO2Obtaining copper-doped ultrathin TiO on the surface of the nanosheet2The nanosheet supported cobalt oxime complex composite photocatalyst. The material has better application prospect in the fields of photocatalytic organic halide dehalogenation reaction and organic synthesis.
In order to achieve the purpose, the invention adopts the technical scheme that: copper-doped ultrathin TiO2The preparation method of the nanosheet-supported cobalt oxime complex composite photocatalyst comprises the following steps: dissolving a proper amount of carboxyl-containing cobalt oxime complex in absolute ethyl alcohol, and adding a proper amount of copper-doped ultrathin TiO2And (3) dispersing the nanosheets by ultrasonic, stirring for 24-25h at normal temperature, filtering, washing filter cakes by absolute ethyl alcohol, and drying in vacuum to obtain a target product.
Preferably, the preparation method comprises the steps of preparing the cobalt oxime complex Cu and TiO according to the mass ratio of the materials2＝3:3:94。
Preferably, in the above preparation method, the cobalt oxime complex having a carboxyl group is Co (dmgH)2(4-COOH-py) Cl, the preparation method comprises the following steps: adding CoCl2·6H2Dissolving dimethylglyoxime and sodium hydroxide in 95% ethanol, heating to 70 ℃, adding isonicotinic acid, cooling the obtained solution to room temperature, introducing air flow into the solution for 30min to precipitate, filtering, washing the solid with water and ethanol, and drying to obtain the product.
Preferably, in the above preparation method, the copper-doped ultrathin TiO2The preparation method of the nano sheet comprises the following steps: tetrabutyl titanate, hydrofluoric acid and Cu (NO)3)2·3H2Adding O into absolute ethyl alcohol, stirring at room temperature for 30 minutes, transferring to a hydrothermal kettle, heating at 180 ℃ for 2-3 hours, centrifuging, washing the solid with distilled water, and drying at 60 ℃ in vacuum to obtain copper-doped ultrathin TiO2A nanosheet.
Preferably, the copper-doped ultrathin TiO of the invention2The application of the nanosheet-supported cobalt oxime complex composite photocatalyst in catalyzing the complete dechlorination of trichlorotoluene to be converted into methyl benzoate. The method comprises the following steps: taking appropriate amount of copper doped ultrathin TiO2The nano-sheet loaded cobalt oxime complex composite photocatalyst is ultrasonically dispersed in a methanol solution of trichlorotoluene,adding triethanolamine, and carrying out photocatalytic reaction by using visible light as a light source.
The beneficial effects of the invention are: the invention relates to a carboxyl-containing cobalt oxime complex and copper-doped ultrathin TiO2The nanosheets are combined to prepare the composite photocatalyst Cu-TiO with good photocatalytic activity in the visible light region2-Co. Copper doped ultra-thin TiO compounds2The nano-sheet has better light responsiveness in a visible light region and has good application prospect in the field of organic synthesis. Co-oxime complex molecule immobilized to copper-doped ultrathin TiO with visible light photoresponse2The composite photocatalyst with wide spectral response is obtained on the surface of the nanosheet, and the trichlorotoluene is completely dechlorinated and converted into methyl benzoate under the catalysis of visible light, so that the composite photocatalyst can be used for organic synthesis.
Drawings
FIG. 1 shows a cobalt oxime complex Co (dmgH)2A structural schematic diagram of (4-COOH-py) Cl.
FIG. 2 shows a composite photocatalyst Cu-TiO2Schematic diagram of structure of-Co.
FIG. 3 is an ultra-thin TiO2Nanosheet, composite Cu-TiO2And composite photocatalyst Cu-TiO2-solid uv-vis diffuse reflectance spectrum of Co.
FIG. 4 is a Cu-TiO composite2Transmission electron micrograph (a) and high-resolution transmission electron micrograph (b).
FIG. 5 shows a composite photocatalyst Cu-TiO2EDX diagram of Co.
Fig. 6 is a mass spectrum of the product methyl benzoate (M ═ 136.15).
FIG. 7 shows a composite photocatalyst Cu-TiO2Schematic diagram of-Co photocatalytic trichlorotoluene dechlorination reaction.
Detailed Description
Example 1
Copper doped ultra-thin TiO2Nanosheet-loaded cobalt oxime complex composite photocatalyst (Cu-TiO)2-Co)
The preparation method comprises the following steps:
1. ultra-thin TiO 22Preparation of nanosheets
Adding 10mL tetrabutyl titanate and 1.2mL HF into 40mL absolute ethyl alcohol, stirring for 30min, transferring into a hydrothermal kettle, heating at 180 ℃ for 2h, centrifuging, repeatedly washing the solid with distilled water, and finally, vacuum drying at 60 ℃ for 24 h.
2. Copper doped ultra-thin TiO2Nanosheet (Cu-TiO)2) Preparation of
To 40mL of absolute ethanol were added 10mL of tetrabutyl titanate, 1.2mL of HF and 400mg of Cu (NO)3)2·3 H2O, stirring for 30min, transferring to a hydrothermal kettle, heating at 180 ℃ for 2h, centrifuging, and repeatedly washing the solid with distilled water. Finally, vacuum drying is carried out for 24h at 60 ℃.
3. Carboxyl group-containing cobalt oxime complex (Co (dmgH)2Preparation of (4-COOH-py) Cl)
CoCl2·6H2O (476mg, 2mmol), dimethylglyoxime (523mg, 4.5mmol), sodium hydroxide (80 mg, 2mmol) were dissolved in 95% ethanol and heated to 70 ℃ and isonicotinic acid (246mg, 2mmol) was added, the resulting solution was cooled to room temperature, air was passed through the solution for 30min, and a precipitate precipitated out, filtered, the solid was washed with water and ethanol and dried to give 380mg of product in 87% yield. The structural formula is shown in figure 1.
4. Composite photocatalyst Cu-TiO2Preparation of-Co
Taking the copper-doped ultrathin TiO obtained in the step 22Nanosheet (Cu-TiO)2) (50mg), carboxyl group-containing cobalt oxime complex (Co (dmgH) obtained in step 3)2(4-COOH-py) Cl) (5mg, 0.01mmol), ultrasonically dispersing in 5mL of absolute ethanol, stirring at room temperature for 24h, centrifuging, washing with ethanol until the supernatant is colorless, and vacuum drying to obtain solid 42mg, namely the composite photocatalyst Cu-TiO2-Co, the structural formula is shown in figure 2.
(II) the result of the detection
FIG. 3 is an ultra-thin TiO2Nanosheet, composite Cu-TiO2And composite photocatalyst Cu-TiO2Solid uv-vis diffuse reflectance spectrum of Co. By comparison, the utilization rate of the ultrathin titanium dioxide nanosheet to visible light can be improved by doping of copper and modification of the cobalt oxime complex.
FIG. 4 is a Cu-TiO composite2Transmission electron micrograph (a) and high-resolution transmission electron micrograph (b). As can be seen from fig. 4, the titanium dioxide nanosheet is an ultra-thin nanosheet, and the thickness of the nanosheet can be determined by calculation to be about 2.8 nm.
FIG. 5 shows a composite photocatalyst Cu-TiO2An EDX diagram of Co, as can be seen from FIG. 5, the content ratio of the cobalt to the copper to the titanium in the composite photocatalyst is 3:3:94, which proves that the copper is successfully doped into TiO2In the nano-sheet structure, and the cobalt oxime complex is successfully immobilized on Cu-TiO2And (3) the surface of the nanosheet.
Example 2
Copper doped ultra-thin TiO2Nanosheet-loaded cobalt oxime complex composite photocatalyst Cu-TiO2Application of-Co
The method comprises the following steps: 10mg of composite photocatalyst Cu-TiO2Ultrasonic dispersion of-Co in 5mL of trichlorotoluene (2.3X 10)-3mol/L) in methanol, and 0.15mL triethanolamine TEOA (0.2mol/L) was added thereto. A xenon lamp with a filter with lambda not less than 420nm is used as a visible light source, and the photocatalytic reaction is carried out for 120min under visible light. The reaction principle is shown in FIG. 7, and the reaction formula is as follows:
after the reaction is finished, centrifugally separating the catalyst, taking the reaction liquid after centrifugation, adding an internal standard substance biphenyl into the reaction liquid, and respectively determining the product and the yield by GC-MS and GC. GC-MS detection confirms that only one product of methyl benzoate exists after dechlorination of trichlorotoluene. Fig. 6 is a gas mass diagram of the product methyl benzoate (M136.05), in which the mass spectrum shows three peaks M/z 135.20, 105.14 and 77.23, respectively, assigned to methyl benzoate [ M-H ═ 136.05]，[M-OCH3]And [ M-COOCH3]The debris peak of (a). The relevant catalytic data are listed in table 1.
TABLE 1 composite photocatalyst Cu-TiO2-Co catalysis of the conversion of trichlorotoluene to methyl benzoate
As can be seen from Table 1, by comparison, it was found that dechlorination did not occur when the electron sacrificial body TEOA was not irradiated or added. When the visible light irradiates for 120min, the catalyst is the composite photocatalyst Cu-TiO of the invention2at-Co, the trichlorotoluene is almost completely converted to methyl benzoate, while the catalysts are Cu-TiO, respectively2Or TiO2The yield of trichlorotoluene is only 48% and 16% respectively when Co is used, thereby showing that the catalytic activity is remarkably improved by doping copper and introducing a cobalt oxime complex. Composite photocatalyst Cu-TiO2Co has high catalytic organic halide dehalogenation performance under the irradiation of visible light, and has potential application prospect in the degradation of organic halide and the synthesis of methyl benzoate.
Claims (6)
1. Copper-doped ultrathin TiO2The preparation method of the nanosheet supported cobalt oxime complex composite photocatalyst is characterized by comprising the following steps of: the method comprises the following steps: dissolving a proper amount of carboxyl-containing cobalt oxime complex in absolute ethyl alcohol, and adding a proper amount of copper-doped ultrathin TiO2Carrying out ultrasonic dispersion on the nanosheets, stirring for 24-25h at normal temperature, filtering, washing filter cakes by absolute ethyl alcohol, and drying in vacuum to obtain a target product; the cobalt oxime complex containing a carboxyl group is Co (dmgH)2(4-COOH-py) Cl, the preparation method comprises the following steps: adding CoCl2·6H2Dissolving dimethylglyoxime and sodium hydroxide in 95% ethanol, heating to 70 ℃, adding isonicotinic acid, cooling the obtained solution to room temperature, introducing air flow into the solution for 30min to precipitate, filtering, washing the solid with water and ethanol, and drying to obtain the product.
2. The method of claim 1, wherein: according to the mass ratio of the cobalt oxime complex to the Cu to the TiO2 = 3 : 3 : 94。
3. The method of claim 1, wherein: the copper-doped ultrathin TiO2The preparation method of the nanosheet comprises the following steps:tetrabutyl titanate, hydrofluoric acid and Cu (NO)3)2·3H2Adding O into absolute ethyl alcohol, stirring at room temperature for 30 minutes, transferring to a hydrothermal kettle, heating at 180 ℃ for 2-3 hours, centrifuging, washing the solid with distilled water, and drying at 60 ℃ in vacuum to obtain copper-doped ultrathin TiO2Nanosheets.
4. Copper-doped ultra-thin TiO prepared according to the method of claim 12The application of the nanosheet-supported cobalt oxime complex composite photocatalyst in photocatalytic organic halide dehalogenation reaction.
5. Use according to claim 4, characterized in that copper is doped with ultra-thin TiO2The application of the nanosheet-supported cobalt oxime complex composite photocatalyst in catalyzing the complete dechlorination of trichlorotoluene to be converted into methyl benzoate.
6. Use according to claim 5, characterized in that the method is as follows: taking a proper amount of copper doped ultrathin TiO2The nanosheet supported cobalt oxime complex composite photocatalyst is ultrasonically dispersed in a methanol solution of trichlorotoluene, triethanolamine is added, and visible light is used as a light source for carrying out photocatalytic reaction.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5468785A (en) * | 1994-04-15 | 1995-11-21 | University Of Akron | Cobaloxime photoinitiated free radical polymerizations |
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