CN115039790B - Titanium/zinc iodate composite material with triple sterilization and spore inhibition effects and preparation method thereof - Google Patents
Titanium/zinc iodate composite material with triple sterilization and spore inhibition effects and preparation method thereof Download PDFInfo
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- 230000001954 sterilising effect Effects 0.000 title claims abstract description 67
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 67
- MFMKGXZULQONRI-UHFFFAOYSA-L zinc;diiodate Chemical compound [Zn+2].[O-]I(=O)=O.[O-]I(=O)=O MFMKGXZULQONRI-UHFFFAOYSA-L 0.000 title claims abstract description 55
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 230000005764 inhibitory process Effects 0.000 title claims abstract description 50
- 239000002131 composite material Substances 0.000 title claims abstract description 42
- 239000010936 titanium Substances 0.000 title claims abstract description 39
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 39
- 230000000694 effects Effects 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 12
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052740 iodine Inorganic materials 0.000 claims abstract description 11
- 239000011630 iodine Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 10
- 238000007133 aluminothermic reaction Methods 0.000 claims abstract description 9
- 238000002485 combustion reaction Methods 0.000 claims abstract description 4
- 230000001699 photocatalysis Effects 0.000 claims abstract description 4
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 34
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
- 239000000243 solution Substances 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 17
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 11
- JLKDVMWYMMLWTI-UHFFFAOYSA-M potassium iodate Chemical compound [K+].[O-]I(=O)=O JLKDVMWYMMLWTI-UHFFFAOYSA-M 0.000 claims description 10
- 239000001230 potassium iodate Substances 0.000 claims description 10
- 235000006666 potassium iodate Nutrition 0.000 claims description 10
- 229940093930 potassium iodate Drugs 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000004094 surface-active agent Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 6
- 238000013329 compounding Methods 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 5
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 4
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 4
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 4
- MIMWJKURSCWLHU-UHFFFAOYSA-N 2-(14-bromotetradecyl)pyridine Chemical compound BrCCCCCCCCCCCCCCC1=NC=CC=C1 MIMWJKURSCWLHU-UHFFFAOYSA-N 0.000 claims description 3
- 238000007146 photocatalysis Methods 0.000 claims description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims 1
- 239000013543 active substance Substances 0.000 abstract description 9
- 238000006479 redox reaction Methods 0.000 abstract description 7
- 239000003832 thermite Substances 0.000 abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 6
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 6
- 241000894006 Bacteria Species 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 5
- 230000001590 oxidative effect Effects 0.000 abstract description 4
- 239000007795 chemical reaction product Substances 0.000 abstract description 3
- 230000005284 excitation Effects 0.000 abstract description 3
- 230000002147 killing effect Effects 0.000 abstract description 3
- 210000004215 spore Anatomy 0.000 description 48
- 210000004666 bacterial spore Anatomy 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000010485 coping Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000002076 thermal analysis method Methods 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- ICIWUVCWSCSTAQ-UHFFFAOYSA-M iodate Chemical compound [O-]I(=O)=O ICIWUVCWSCSTAQ-UHFFFAOYSA-M 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/12—Iodine, e.g. iodophors; Compounds thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/20—Combustible or heat-generating compositions
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P1/00—Disinfectants; Antimicrobial compounds or mixtures thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P3/00—Fungicides
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Agronomy & Crop Science (AREA)
- Inorganic Chemistry (AREA)
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Abstract
The invention discloses a titanium/zinc iodate composite material with triple sterilization and spore inhibition effects and a preparation method thereof. The composite material can realize sterilization and spore inhibition effects in three aspects in the oxidation-reduction reaction process. First heavy physical heat sterilization: in the oxidation-reduction reaction process, the aluminothermic reaction can release a large amount of heat energy, and has a certain high-temperature killing effect on partial bacteria and spores; and (3) sterilizing by secondary chemical iodine: in the aluminothermic reaction process, the system can release an active substance iodine simple substance with strong bactericidal effect, and is an ideal material for bactericidal and chemical-resistant weapons; third photocatalytic sterilization: the titanium-based thermite adopts nano titanium powder with similar energy and combustion performance to nano aluminum powder to replace the traditional nano aluminum powder, and the thermite reaction product TiO thereof 2 Under the excitation of external sunlight, the ZnO composite material releases an oxidizing group with sterilization and spore inhibition functions, so that the ZnO composite material has long-term sterilization and spore inhibition efficiency and higher sterilization performance.
Description
Technical Field
The invention belongs to the technical field of energetic materials, and particularly relates to a titanium/zinc iodate composite material with triple sterilization and spore inhibition effects and a preparation method thereof.
Background
Because of the characteristics of high energy density, rapid and intense reaction, various formulas, adjustability and the like, thermite is widely applied to various fields of military, railway, welding, safety air bags and the like. In recent years, aiming at the problem of rapid combat of bacterial spores with large area and severe environment resistance, domestic and foreign experts carry out a great deal of improvement work based on thermite with traditional meaning, so that thermite is causedAfter the agent undergoes oxidation-reduction reaction, high-temperature sterilization is realized (the system temperature can reach 2000) o C) and releasing active substances with sterilization and spore inhibition functions, so that the active substances can continuously cope with various bacterial spores, and the active substances have the effects of effectively sterilizing and inhibiting spore activity for a long time.
In reality, however, the rapid combat problems of bacterial spores with large area and severe environment resistance all occur in an open environment, a large amount of sterilization and spore inhibition experiments in the early stage are all tested and inspected in a closed environment, meanwhile, the disinfection efficiency of the sterilization and spore inhibition experiments still does not reach the ideal condition, the metal iodate-based thermite has the moment of oxidation-reduction reaction, and meanwhile, the sterilization and disinfection stages of high-temperature sterilization and spore inhibition active substances and the sterilization stages of chemical sterilization and spore inhibition active substances exist, most harmful bacteria can be killed through the two reaction stages, but the effect is not great on bacterial spores capable of coping with the limit environment, and once the system temperature returns to normal, the sterilization and spore activation problem still exists once volatilization of the sterilization active substances (iodine simple substances) is completed. Therefore, there is a need to develop a novel system capable of rapidly and long-effectively coping with large-area bacteria and spore activities thereof in an open space.
Disclosure of Invention
The invention aims to provide a titanium/zinc iodate composite material with triple sterilization and spore inhibition effects.
The invention also aims to provide a preparation method of the titanium/zinc iodate composite material with triple sterilization and spore inhibition effects.
The technical solution for realizing the purpose (1) of the invention is as follows: a titanium/zinc iodate composite material with triple sterilization and spore inhibition effects can release a large amount of heat (double sterilization and spore inhibition effects) and iodine simple substance (double sterilization and spore inhibition effects) in the process of aluminothermic reaction when being ignited, and the combustion products are zinc oxide and titanium oxide composites which have photocatalysis sterilization and spore inhibition effects (triple sterilization and spore inhibition effects) under sunlight irradiation.
The technical solution for realizing the purpose (2) of the invention is as follows: a preparation method of a titanium/zinc iodate composite material with triple sterilization and spore inhibition effects comprises the following steps of taking zinc nitrate and potassium iodate as precursors, preparing zinc iodate with regular particles under high pressure after being treated by a surfactant, and compositing zinc iodate and titanium powder under ultrasonic effect to obtain the titanium/zinc iodate composite material with triple sterilization and spore inhibition effects, wherein the preparation method comprises the following specific steps:
step 1, preparing zinc nitrate solution with a certain concentration;
step 2, adding a proper amount of surfactant into the zinc nitrate solution in the step 1, and uniformly stirring;
step 3, slowly adding the mixed solution obtained in the step 2 into a potassium iodate solution, rapidly stirring, immediately centrifugally washing, drying at room temperature, and drying in an oven to obtain zinc iodate;
step 4, carrying out ultrasonic dispersion and compounding on the zinc iodate and the metal titanium powder in the step 3 in ethanol to obtain an ethanol dispersion suspension of the titanium/zinc iodate composite material;
and 5, drying to remove the solvent to obtain the titanium/zinc iodate composite material.
Further, in the step 1, the concentration of the zinc nitrate solution is 0.1 mol/L-0.3 mol/L;
in step 2, the surfactant may be a nonionic surfactant such as polyvinylpyrrolidone or bromotetradecylpyridine, and the mass ratio of the nonionic surfactant to zinc nitrate is 1:100-2:100.
In the step 3, the concentration of potassium iodate is 0.1 mol/L-0.3 mol/L, and the mass ratio of the potassium iodate to zinc nitrate is 2:1-3:1.
Further, in the step 3, after rapid stirring for 10-20 min, immediately centrifugally washing, and drying at room temperature for 50-60 min o And C, drying the mixture for 2-3 hours in an oven.
In the step 4, the mass ratio of the metal titanium powder to the zinc iodate is 2.5:1-3:1.
Compared with the prior art, the invention has the remarkable advantages that: (1) Provides a simple preparation method for the titanium/zinc iodate composite material with triple sterilization and spore inhibition effects, has the advantages of easily available raw materials, simple and convenient operation, and can be synthesized in a large scale, and overcomes the defects of low iodine content, unstable storage, poor combustion performance and long term commonly existing in the current developed sterilization systemThe sterilization and spore inhibition efficiency is low; (2) The zinc iodate/nano titanium powder sterilization and spore inhibition system is prepared by taking zinc iodate as an iodine release source, and nano metal titanium powder replacing nano aluminum powder in a traditional thermite system as a reducing agent. The excellent energy performance and the reaction activity of the zinc iodate/nano titanium powder sterilization and spore suppression system are ensured, and meanwhile, the high-efficiency sterilization and spore suppression performance is realized; (3) The titanium/zinc iodate composite material has triple sterilization and spore inhibition performances, and the first weight is as follows: in the oxidation-reduction reaction process, the aluminothermic reaction can release a large amount of heat energy, and has a certain high-temperature killing effect on partial bacteria and spores; second weight: in the aluminothermic reaction process, the system can release an active substance iodine simple substance with strong bactericidal effect, and is an ideal material for bactericidal and chemical-resistant weapons; third ply: titanium powder replaces traditional aluminum powder, and an aluminothermic reaction product TiO thereof 2 Under the excitation of external sunlight, the ZnO composite material releases an oxidizing group with sterilization and spore inhibition functions, so that the ZnO composite material has long-term sterilization and spore inhibition efficiency and high long-term sterilization performance.
Drawings
FIG. 1 is a thermal analysis chart of zinc iodate synthesized in example 1.
FIG. 2 is a graph showing the rapid pyrolysis of zinc iodate synthesized in example 1 to release elemental iodine and oxygen.
FIG. 3 is an XRD pattern of the titanium/zinc iodate composite material prepared in example 1, corresponding to Ti and Zn (IO 3 ) 2 The PDF card numbers of (1) are respectively: PDF Nos. 44-1294 and 01-0593.
FIG. 4 shows sterilization and spore inhibition efficiencies (colony count changes before and after oxidation reaction) of the titanium/zinc iodate composite materials prepared in example 1, example 2 and example 3 under different conditions.
FIG. 5 is a schematic diagram showing triple sterilization and spore inhibition of a triple sterilization and spore inhibition titanium/zinc iodate composite material.
Detailed Description
The technical scheme of the invention is described in detail below with reference to the embodiment and the attached drawings.
The principle of the invention is as follows: composite sterilization and spore inhibition reaction system with zinc iodate as oxidant and nano titanium powder to replace nano aluminum powderThe sterilization and spore inhibition effects can be realized in three aspects in the oxidation-reduction reaction process. First heavy action: in the oxidation-reduction reaction process, a great amount of heat energy is released by the aluminothermic reaction, and a certain high-temperature killing effect (high-temperature sterilization) is achieved on part of bacteria and spores; the second action is as follows: in the aluminothermic reaction process, the system can release an active substance iodine simple substance with strong bactericidal effect, and is an ideal material (chemical sterilization) of a bactericidal and chemical-proof weapon; third function: the nano titanium powder replaces the traditional nano aluminum powder, and the thermit reaction product TiO thereof 2 Under the excitation of external sunlight, the ZnO composite semiconductor material releases an oxidizing group with sterilization and spore inhibition functions, so that the ZnO composite semiconductor material has long-term sterilization and spore inhibition efficiency and higher sterilization performance (photocatalysis sterilization).
Example 1:
a preparation method of a titanium/zinc iodate composite material with triple sterilization and spore inhibition effects comprises the following steps:
step 1, preparing 20 mL of 0.1 mol/L zinc nitrate solution;
step 2, adding 3.8 mg polyvinylpyrrolidone into the zinc nitrate solution in the step 1, and uniformly stirring;
step 3, slowly adding the mixed solution obtained in the step 2 into 40 mL of 0.1 mol/L potassium iodate solution, rapidly stirring for 10 min, immediately centrifuging and washing, and drying at room temperature to obtain 50 o Drying the C oven for 2 hours to obtain zinc iodate;
step 4, carrying out ultrasonic dispersion and compounding on the dried sample obtained in the step 3 and 0.24 g metal titanium powder in 20 mL ethanol to obtain an ethanol dispersion suspension of the titanium/zinc iodate composite material;
and step 5, evaporating, drying and removing the solvent to obtain the titanium/zinc iodate composite material.
The thermal analysis pattern of zinc iodate obtained in example 1 is shown in fig. 1, the pattern of iodine elementary substance and oxygen released by rapid pyrolysis of zinc iodate is shown in fig. 2, XRD of the prepared titanium/zinc iodate composite material is shown in fig. 3, sterilization and spore inhibition efficiency (colony number change before and after oxidation reaction) under different conditions is shown in fig. 4, and triple sterilization and spore inhibition schematic diagram of triple sterilization and spore inhibition of titanium/zinc iodate is shown in fig. 5.
Example 2:
a preparation method of a titanium/zinc iodate composite material with triple sterilization and spore inhibition effects comprises the following steps:
step 1, preparing 20 mL of 0.3 mol/L zinc nitrate solution;
step 2, adding 22.8 mg bromotetradecylpyridine into the zinc nitrate solution in the step 1, and uniformly stirring;
step 3, slowly adding the mixed solution in the step 2 into 60 mL of 0.3 mol/L potassium iodate solution, rapidly stirring for 20 min, immediately centrifuging and washing, and drying at room temperature to obtain 60 o Drying the C oven for 3 hours to obtain zinc iodate;
step 4, carrying out ultrasonic dispersion and compounding on the dried sample obtained in the step 3 and 0.86 g metal titanium powder in 20 mL ethanol to obtain an ethanol dispersion suspension of the titanium/zinc iodate composite material;
and step 5, evaporating, drying and removing the solvent to obtain the titanium/zinc iodate composite material.
The sterilization and spore inhibition efficiency (the colony number changes before and after the oxidation reaction) of the titanium/zinc iodate composite material prepared in example 2 under different conditions is shown in fig. 4, and a triple sterilization and spore inhibition schematic diagram of the triple sterilization and spore inhibition effect of titanium/zinc iodate is shown in fig. 5.
Example 3:
a preparation method of a titanium/zinc iodate composite material with triple sterilization and spore inhibition effects comprises the following steps:
step 1, preparing 10 mL of 0.2 mol/L zinc nitrate solution;
step 2, adding 4.5 mg polyvinylpyrrolidone into the zinc nitrate solution in the step 1, and uniformly stirring;
step 3, slowly adding the mixed solution obtained in the step 2 into 20 mL of 0.2 mol/L potassium iodate solution, rapidly stirring for 15 min, immediately centrifuging and washing, and drying at room temperature to obtain 55 o Drying the C oven for 2 hours to obtain zinc iodate;
step 4, carrying out ultrasonic dispersion and compounding on the dried sample obtained in the step 3 and 0.29 g metal titanium powder in 30 mL ethanol to obtain an ethanol dispersion suspension of the titanium/zinc iodate composite material;
and step 5, evaporating, drying and removing the solvent to obtain the titanium/zinc iodate composite material.
The sterilization and spore inhibition efficiency (the colony number changes before and after the oxidation reaction) of the titanium/zinc iodate composite material prepared in example 3 under different conditions is shown in fig. 4, and a triple sterilization and spore inhibition schematic diagram of the triple sterilization and spore inhibition effect of titanium/zinc iodate is shown in fig. 5.
Claims (5)
1. The application of the titanium/zinc iodate composite material in sterilization and spore inhibition is characterized in that the titanium/zinc iodate composite material releases a large amount of heat with one-time sterilization and spore inhibition effect and iodine simple substance with two-time sterilization and spore inhibition effect in the process of igniting and generating aluminothermic reaction, and the combustion product is zinc oxide and titanium oxide composite with three-time sterilization and spore inhibition effect of photocatalysis under sunlight irradiation; wherein the mass ratio of titanium to zinc iodate is 2.5:1-3:1; the titanium/zinc iodate composite material is prepared by the following steps: step 1, preparing zinc nitrate solution with a certain concentration; step 2, adding a proper amount of surfactant into the zinc nitrate solution in the step 1, and uniformly stirring; step 3, slowly adding the mixed solution obtained in the step 2 into a potassium iodate solution, rapidly stirring, immediately centrifugally washing, drying at room temperature, and drying in an oven to obtain zinc iodate; step 4, carrying out ultrasonic dispersion and compounding on the zinc iodate and the metal titanium powder in the step 3 in ethanol to obtain an ethanol dispersion suspension of the titanium/zinc iodate composite material; and 5, drying to obtain the titanium/zinc iodate composite material.
2. The use according to claim 1, wherein in step 1 the concentration of the zinc nitrate solution is between 0.1 mol/L and 0.3 mol/L.
3. The use according to claim 1, wherein in step 2, the surfactant is polyvinylpyrrolidone or bromotetradecylpyridine, and the mass ratio of the surfactant to zinc nitrate is 1:100-2:100.
4. The use according to claim 1, wherein in step 3, the concentration of potassium iodate is 0.1 mol/L to 0.3 mol/L, and the mass ratio of potassium iodate to zinc nitrate is 2:1 to 3:1.
5. The use according to claim 1, wherein in step 3, the mixture is immediately centrifugally washed after being rapidly stirred for 10 to 20 minutes, and is dried in an oven at 50 to 60 ℃ for 2 to 3 hours after being dried at room temperature.
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