Rare earth-molybdenum antibacterial material and preparation method thereof

Abstract

The invention discloses a rare earth-molybdenum antibacterial material and a preparation method thereof, and belongs to the technical field of rare earth materials. The preparation method comprises the following steps: uniformly mixing rare earth chloride, zinc chloride, zirconium oxychloride and water, heating the mixed solution, adding PEG (Polyethylene Glycol) and glacial acetic acid, adding an ammonium bicarbonate solution and citric acid or tartaric acid, reacting, centrifuging the reaction solution, drying the precipitate, adding deionized water into the obtained first reactant, and uniformly mixing to obtain a second reactant; adding strong phosphoric acid and 1-butyl-3-methylimidazole dibutyl phosphate salt, heating to react, filtering the reaction liquid to obtain a precipitate, drying the precipitate, adding the obtained second reactant into an ammonium molybdate solution and glacial acetic acid to react, filtering the reaction liquid, and washing, drying and calcining the precipitate to obtain the rare earth-molybdenum antibacterial material. The rare earth-molybdenum antibacterial material synthesized through a liquid phase method has the advantages of being short in reaction time, small in particle size, large in specific surface area, good in antibacterial effect and good in aging resistance.

Description

Technical Field

[0001] The present invention relates to the technical field of rare earth materials, in particular to a rare earth-molybdenum antibacterial material and a preparation method thereof. Background Art

[0002] Nano-antimicrobial materials have significantly improved safety, broad-spectrum properties, and drug resistance compared to traditional organic antimicrobial products, and are now widely used in building materials, plastics, textiles, and other fields. MoO3, with its small band gap energy, excellent catalytic effect under visible light, and high solar energy utilization, holds significant promise for application in the field of photocatalytic antimicrobial treatment. For example, molybdenum disulfide can directly act on bacteria, distorting their morphology and disrupting their cell membranes, thereby inhibiting their growth. Furthermore, the antimicrobial effect of molybdenum disulfide is enhanced when irradiated with a light source. Under ultraviolet radiation, molybdenum disulfide particles generate superoxide radicals and singlet oxygen, accelerating bacterial inactivation.

[0003] In recent years, the application of rare earth antimicrobial materials in antibacterial applications has attracted considerable attention. Rare earth ions interact with bacteria, damaging their cell walls, membranes, and intracellular DNA, proteins, and enzymes, hindering their vital activities and inhibiting their growth and reproduction. The unpaired electrons in the 4f sublayer of rare earth elements interact with the outer electrons of other elements, giving them active coordination properties, enabling the synthesis of rare earth complexes with antibacterial properties. Rare earth elements doped into antibacterial materials can produce synergistic antibacterial effects with other inorganic antimicrobial agents, reducing the dosage of other antimicrobial agents and resulting in composite antimicrobial materials with enhanced antimicrobial properties.

[0004] There are no reports on synergistic antibacterial materials using rare earth as carrier and molybdenum as antibacterial active ions.

[0005] CN114698649A discloses a rare earth antibacterial material, its preparation method, and application. The rare earth antibacterial material is obtained by mixing tetrapod-shaped zinc oxide whiskers, polyethylene glycol 2000, lanthanum oxide, lanthanum chloride, cerium oxide, and copper chloride with water, dispersing them, drying them, and then calcining them. Although the antibacterial material prepared by this method is dispersed, the tetrapod-shaped zinc oxide whiskers, lanthanum oxide, and cerium oxide in the raw materials are insoluble in water. Even after dispersion, the problem of uneven composition still exists.

[0006] CN102763678A discloses a method for preparing cubic zirconium phosphate-loaded silver antibacterial powder. The synthesis process has a high temperature of 90°C, a long reaction cycle of 28 hours, and high energy consumption. The obtained antibacterial powder is cubic and has a small specific surface area, which affects the antibacterial effect.

[0007] CN 110934153 A discloses a zirconium phosphate carrier, a zirconium phosphate-supported copper antibacterial agent, a zirconium phosphate antibacterial agent, and its preparation and application. The synthesis reaction temperature reaches a maximum of 180°C, the reaction pressure reaches a maximum of 1 MPa, and the reaction time for step 3 alone is 5-8 hours. However, this method consumes a lot of energy, and the resulting cubic antibacterial powder has a small specific surface area, which can affect the antibacterial effect during use.

[0008] CN 115849325 A discloses a method for preparing a cubic sodium zirconium phosphate carrier and its silver-zinc-loaded antibacterial powder. This method further improves upon CN 102763678A and CN 110934153 A by lowering the reaction temperature to 60-80°C and shortening the reaction time. However, the antibacterial powder prepared by this method has a high viscosity and tends to agglomerate during the drying process, requiring pulverization before use. Furthermore, the powder is not cubic in shape and has a small specific surface area, which can affect its antibacterial effectiveness during subsequent use.

[0009] Therefore, how to develop a rare earth-molybdenum antibacterial material with good antibacterial effect and low preparation cost and its preparation method is a technical problem that technicians in this field urgently need to solve. Summary of the Invention

[0010] In view of this, the present invention provides a rare earth-molybdenum antibacterial material and a preparation method thereof.

[0011] In order to achieve the above object, the present invention adopts the following technical solutions:

[0012] A method for preparing a rare earth-molybdenum antibacterial material comprises the following steps:

[0013] (1) Rare earth chloride, zinc chloride, zirconium oxychloride and water are uniformly mixed to obtain a mixed solution, the mixed solution is heated, PEG and glacial acetic acid are added, and then ammonium bicarbonate solution and citric acid or tartaric acid are added. After the reaction is completed, the reaction solution is centrifuged to obtain a precipitate, and the precipitate is dried to obtain a first reactant;

[0014] (2) adding the first reactant to deionized water and mixing uniformly, then adding concentrated phosphoric acid and 1-butyl-3-methylimidazole dibutyl phosphate and heating to react, filtering the reaction solution to obtain a precipitate, and drying the precipitate to obtain a second reactant;

[0015] (3) adding the second reactant to an ammonium molybdate solution and glacial acetic acid to react, filtering the reaction solution to obtain a precipitate, washing the precipitate, drying it, and calcining it to obtain a rare earth-molybdenum antibacterial material.

[0016] Furthermore, in step (1), the rare earth chloride is lanthanum cerium chloride.

[0017] Furthermore, in step (1), the molar ratio of rare earth chloride, zinc chloride and zirconium oxychloride is (2-8):1:(2-8), and the rare earth ion concentration in the mixed solution is 0.3-0.9 mol / L.

[0018] Preferably, in step (1), the molar ratio of rare earth chloride, zinc chloride and zirconium oxychloride is 5:2:5, and the rare earth ion concentration in the mixed solution is 0.6 mol / L.

[0019] Furthermore, in step (1), the amount of PEG added is 0.05-2% of the total mass of the rare earth chloride, zinc chloride and zirconium oxychloride, the amount of glacial acetic acid added is 1%-3% of the total mass of the rare earth chloride, zinc chloride and zirconium oxychloride, and the ammonium bicarbonate solution and citric acid or tartaric acid are added until the pH value of the system reaches 6.7-7, and the reaction is completed. The concentration of the ammonium bicarbonate solution is 2.53 mol / L, and the molar ratio of the amount of citric acid or tartaric acid added to the ammonium bicarbonate in the ammonium bicarbonate solution is 10:(1-2).

[0020] Preferably, in step (1), the amount of PEG added is 1% of the total mass of rare earth chloride, zinc chloride and zirconium oxychloride.

[0021] Furthermore, the molecular weight of PEG is 2,000-10,000, preferably 6,000.

[0022] Furthermore, in step (1), after the mixed solution is heated to 40-80°C, PEG and glacial acetic acid are added, and the precipitate is dried at a drying temperature of 80°C.

[0023] Furthermore, in step (2), the mass ratio of the first reactant, deionized water, concentrated phosphoric acid and 1-butyl-3-methylimidazole dibutyl phosphate is 1:(3-8):(0.2-0.3):(0.001-0.01).

[0024] Preferably, in step (2), the mass ratio of the first reactant, deionized water, concentrated phosphoric acid and 1-butyl-3-methylimidazole dibutyl phosphate is 1:5:0.25:(0.001-0.01), and the concentration of concentrated phosphoric acid is 14.63 mol / L.

[0025] Furthermore, in step (2), the heating temperature is 60°C, the reaction time is 0.5-2h, and the precipitate is dried at a drying temperature of 80°C.

[0026] Furthermore, in step (3), the mass ratio of the second reactant to the ammonium molybdate solution is 1:(6-10), the concentration of the ammonium molybdate solution is 10wt%-15wt%, and the mass ratio of glacial acetic acid to the ammonium molybdate solution is (0.01-0.02):1.

[0027] Furthermore, in step (3), the reaction time is 4 hours, the drying temperature is 80° C., the calcination temperature is 400-1000° C., and the calcination time is 4 hours.

[0028] The present invention also provides a rare earth-molybdenum antibacterial material prepared by the above method, wherein the particle size of the rare earth-molybdenum antibacterial material is 10nm-1500nm and the specific surface area is 10-100m 2 / g, and the molybdenum adsorption capacity is 1.0-4.0g / 100g.

[0029] Beneficial Effects of the Invention: The present invention aims to provide a method for synthesizing a rare earth-molybdenum antibacterial material with excellent antibacterial efficacy and low production cost. This method overcomes the problems of uneven composition and poor antibacterial performance of antibacterial materials prepared using simple physical mixing methods, as well as the high reaction temperatures and long reaction times associated with conventional liquid-phase methods for synthesizing antibacterial materials. Furthermore, the antibacterial material obtained by the present invention exhibits a higher specific surface area, high adsorption capacity and strength for molybdenum ions, and excellent antibacterial efficacy. Antibacterial materials using rare earth as a carrier and molybdenum as an antibacterial active ion in a synergistic manner have not yet been reported.

[0030] The rare earth-molybdenum antibacterial material synthesized by the liquid phase method has the advantages of short reaction time, small particle size, large specific surface area, good antibacterial effect and good aging resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is an electron microscope image of the rare earth-molybdenum antibacterial material in Example 1. DETAILED DESCRIPTION

[0032] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0033] Example 1

[0034] The preparation method of rare earth-molybdenum antibacterial material comprises the following steps:

[0035] (1) 430.3 g of lanthanum cerium chloride, 37.4 g of zinc chloride, 354.75 g of zirconium oxychloride and 1500 mL of water were mixed uniformly, the rare earth ion concentration in the mixed solution was 0.75 mol / L, and a mixed solution was obtained. After the mixed solution was heated to 60° C., 8.0 g of PEG and 11 g of glacial acetic acid were added, and the molecular weight of PEG was 6000. Then, ammonium bicarbonate solution and tartaric acid were added until the pH value of the system was 6.7, and the reaction was completed (the concentration of the ammonium bicarbonate solution was 2.53 mol / L, and the molar ratio of the added amount of tartaric acid to the ammonium bicarbonate in the ammonium bicarbonate solution was 10:1.5). After the reaction was completed, the reaction solution was centrifuged at a centrifugal speed of 3000 r / min and a centrifugal time of 10 min to obtain a precipitate. The precipitate was dried at a drying temperature of 80° C. to obtain a first reactant.

[0036] (2) 90 g of the first reactant was added to 450 g of deionized water and mixed evenly. Then, 22.5 g of concentrated phosphoric acid and 0.18 g of 1-butyl-3-methylimidazole dibutyl phosphate were added and heated for reaction. The concentration of the concentrated phosphoric acid was 14.63 mol / L, the heating temperature was 60° C., and the reaction time was 1 h. The reaction solution was filtered through a filter membrane with a pore size of 1-3 μm to obtain a precipitate. The precipitate was dried at 80° C. to obtain a second reactant.

[0037] (3) 100 g of the second reactant was added to 800 g of ammonium molybdate solution and 8 g of glacial acetic acid for reaction, the mass concentration of the ammonium molybdate solution was 10%, the reaction time was 4 h, the reaction solution was filtered with a filter membrane with a pore size of 1-3 μm to obtain a precipitate, the precipitate was washed with pure water, the mass ratio of pure water to the second reactant was 8:1, the precipitate was dried at 80 ° C, and the calcination temperature was 900 ° C for 4 h to obtain a rare earth-molybdenum antibacterial material.

[0038] The particle size of rare earth-molybdenum antibacterial material is 20nm, the agglomerated particle size is 600nm, and the specific surface area is 41.08m 2 / g, and the molybdenum adsorption capacity is 2.8g / 100g.

[0039] The antibacterial rate against Staphylococcus aureus, Escherichia coli, and Klebsiella pneumoniae is 99.99%, and the antibacterial rate against Candida albicans and Pseudomonas aeruginosa is 99.9%. After 2000 hours of UV light irradiation, the antibacterial rate against Staphylococcus aureus reaches 99.99%, the antibacterial rate against Escherichia coli reaches 99.98%, the antibacterial rate against Pseudomonas aeruginosa reaches 99.96%, the antibacterial rate against Klebsiella pneumoniae reaches 99.54%, and the antibacterial rate against Candida albicans reaches more than 99.06%.

[0040] Example 2

[0041] The preparation method of rare earth-molybdenum antibacterial material comprises the following steps:

[0042] (1) 430.3 g of lanthanum cerium chloride, 37.4 g of zinc chloride, 354.75 g of zirconium oxychloride and 1500 mL of water were mixed uniformly, the rare earth ion concentration in the mixed solution was 0.75 mol / L, and a mixed solution was obtained. After the mixed solution was heated to 80° C., 8.0 g of PEG and 11 g of glacial acetic acid were added, and the molecular weight of PEG was 6000. Then, ammonium bicarbonate solution and tartaric acid were added until the pH value of the system was 7, and the reaction was completed. The concentration of the ammonium bicarbonate solution was 2.53 mol / L, and the molar ratio of the amount of tartaric acid added to the ammonium bicarbonate in the ammonium bicarbonate solution was 10:1.8. After the reaction was completed, the reaction solution was centrifuged at a centrifugal speed of 3000 r / min for 10 min to obtain a precipitate. The precipitate was dried at 80° C. to obtain a first reactant.

[0043] (2) 100 g of the first reactant was added to 600 g of deionized water and mixed evenly, and then 25 g of concentrated phosphoric acid and 0.2 g of 1-butyl-3-methylimidazole dibutyl phosphate were added and heated to react. The concentration of the concentrated phosphoric acid was 14.63 mol / L, the heating temperature was 60° C., and the reaction time was 1 h. The reaction solution was filtered through a filter membrane with a pore size of 1-3 μm to obtain a precipitate, which was dried at 80° C. to obtain a second reactant;

[0044] (3) 100 g of the second reactant was added to 600 g of ammonium molybdate solution and 10 g of glacial acetic acid for reaction, the concentration of the ammonium molybdate solution was 12 wt %, the reaction time was 4 h, the reaction solution was filtered with a filter membrane with a pore size of 1-3 μm to obtain a precipitate, the precipitate was washed, dried at 80° C., and calcined at 400° C. for 4 h to obtain a rare earth-molybdenum antibacterial material.

[0045] The particle size of the rare earth-molybdenum antibacterial material is 50nm, the agglomerated particle size is 632nm, and the specific surface area is 189.5m 2 / g, and the molybdenum adsorption capacity is 3.0g / 100g.

[0046] The antibacterial rate against Staphylococcus aureus, Escherichia coli, and Klebsiella pneumoniae is 99.99%, and the antibacterial rate against Candida albicans and Pseudomonas aeruginosa is 99.96%. After 2000 hours of UV light irradiation, the antibacterial rate against Staphylococcus aureus reaches 99.99%, the antibacterial rate against Escherichia coli reaches 99.98%, the antibacterial rate against Pseudomonas aeruginosa reaches 99.97%, the antibacterial rate against Klebsiella pneumoniae reaches 99.65%, and the antibacterial rate against Candida albicans reaches more than 99.76%.

[0047] Example 3

[0048] (1) 391.2 g of cerium chloride, 27.3 g of zinc chloride, 322.3 g of zirconium oxychloride and 1800 mL of water were uniformly mixed, the rare earth ion concentration in the mixed solution was 0.55 mol / L, and a mixed solution was obtained. After the mixed solution was heated to 50° C., 7.4 g of PEG and 13.5 g of glacial acetic acid were added, and the molecular weight of PEG was 6000. Then, ammonium bicarbonate solution and citric acid were added until the pH value of the system reached 7, and the reaction was completed. The concentration of the ammonium bicarbonate solution was 2.53 mol / L, and the molar ratio of the amount of citric acid added to the ammonium bicarbonate in the ammonium bicarbonate solution was 10:1.6. After the reaction was completed, the reaction solution was centrifuged at a centrifugal speed of 3000 r / min and a centrifugal time of 10 min to obtain a precipitate. The precipitate was dried at a drying temperature of 80° C. to obtain a first reactant.

[0049] (2) 100 g of the first reactant was added to 800 g of deionized water and mixed evenly, and then 26 g of concentrated phosphoric acid and 0.36 g of 1-butyl-3-methylimidazole dibutyl phosphate were added and heated to react. The concentration of the concentrated phosphoric acid was 14.63 mol / L, the heating temperature was 60° C., and the reaction time was 1.5 h. The reaction solution was filtered through a filter membrane with a pore size of 1-3 μm to obtain a precipitate, which was dried at 80° C. to obtain a second reactant;

[0050] (3) 50 g of the second reactant was added to 300 g of ammonium molybdate solution and 6 g of glacial acetic acid for reaction, the mass concentration of the ammonium molybdate solution was 10%, the reaction time was 4 h, the reaction solution was filtered with a filter membrane with a pore size of 1-3 μm to obtain a precipitate, the precipitate was washed with pure water, the mass ratio of pure water to the second reactant was 8:1, the drying temperature was 80 ° C, the calcination temperature was 900 ° C, and the calcination time was 4 h to obtain a rare earth-molybdenum antibacterial material.

[0051] The particle size of the rare earth-molybdenum antibacterial material is 15nm, the agglomerated particle size is 520nm, and the specific surface area is 51.08m 2 / g, and the molybdenum adsorption capacity is 2.9g / 100g.

[0052] The antibacterial rate against Staphylococcus aureus, Escherichia coli, and Klebsiella pneumoniae is 99.99%, and the antibacterial rate against Candida albicans and Pseudomonas aeruginosa is 99.9%. After 2000 hours of UV light irradiation, the antibacterial rate against Staphylococcus aureus reaches 99.99%, the antibacterial rate against Escherichia coli reaches 99.98%, the antibacterial rate against Pseudomonas aeruginosa reaches 99.96%, the antibacterial rate against Klebsiella pneumoniae reaches 99.60%, and the antibacterial rate against Candida albicans reaches more than 99.11%.

[0053] Comparative Example 1

[0054] The preparation method of rare earth-molybdenum antibacterial material is compared with Example 1, except that tartaric acid is not added when adding ammonium bicarbonate solution in step (1), and other conditions remain unchanged. The final rare earth-molybdenum antibacterial material has a particle size of 15 nm, an agglomerated particle size of 16.5 μm, and a specific surface area of 30.59 m 2 / g, and the molybdenum adsorption capacity is 2.2g / 100g.

[0055] The antibacterial rate against Staphylococcus aureus, Escherichia coli, and Klebsiella pneumoniae is 99.08%, and the antibacterial rate against Candida albicans and Pseudomonas aeruginosa is 98.67%. After 2000 hours of UV light irradiation, the antibacterial rate against Staphylococcus aureus reaches 99.45%, the antibacterial rate against Escherichia coli reaches 98.12%, the antibacterial rate against Pseudomonas aeruginosa reaches 98.76%, the antibacterial rate against Klebsiella pneumoniae reaches 99.01%, and the antibacterial rate against Candida albicans reaches more than 97.55%.

[0056] Comparative Example 2

[0057] The preparation method of rare earth-molybdenum antibacterial material is compared with Example 1, except that 1-butyl-3-methylimidazole dibutyl phosphate salt is not added in step (2), and other conditions remain unchanged. The particle size of the rare earth-molybdenum antibacterial material finally obtained is 10nm, the agglomerated particle size is 18.3μm, and the specific surface area is 25.36m 2 / g, and the molybdenum adsorption capacity is 1.1g / 100g.

[0058] The antibacterial rate against Staphylococcus aureus, Escherichia coli, and Klebsiella pneumoniae is 99.85%, and the antibacterial rate against Candida albicans and Pseudomonas aeruginosa is 99.15%. After 2000 hours of UV light irradiation, the antibacterial rate against Staphylococcus aureus reaches 98.96%, the antibacterial rate against Escherichia coli reaches 96.56%, the antibacterial rate against Pseudomonas aeruginosa reaches 95.77%, the antibacterial rate against Klebsiella pneumoniae reaches 94.23%, and the antibacterial rate against Candida albicans reaches more than 88.12%.

[0059] Conclusion: The addition of tartaric acid to the ammonium bicarbonate solution during the reaction process can form organic complexes such as rare earth tartarate with metal ions. This prevents powder agglomeration during the calcination process, increases the powder's specific surface area, and enhances the antibacterial effect. Butyl-3-methylimidazole dibutyl phosphate, as an organic surfactant, effectively reduces particle agglomeration and reduces the aggregate size of the material.

[0060] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for preparing a rare earth-molybdenum antibacterial material, characterized in that: The following steps are involved: (1) Rare earth chloride, zinc chloride, zirconium oxychloride and water are uniformly mixed to obtain a mixed solution, the mixed solution is heated, PEG and glacial acetic acid are added, and then ammonium bicarbonate solution and citric acid or tartaric acid are added. After the reaction is completed, the reaction solution is centrifuged to obtain a precipitate, and the precipitate is dried to obtain a first reactant; (2) adding the first reactant to deionized water and mixing uniformly, then adding concentrated phosphoric acid and 1-butyl-3-methylimidazole dibutyl phosphate and heating to react, filtering the reaction solution to obtain a precipitate, and drying the precipitate to obtain a second reactant; (3) adding the second reactant to an ammonium molybdate solution and glacial acetic acid to react, filtering the reaction solution to obtain a precipitate, washing the precipitate, drying it, and calcining it to obtain a rare earth-molybdenum antibacterial material.

2. The method for preparing a rare earth-molybdenum antibacterial material according to claim 1, wherein: In step (1), the rare earth chloride is lanthanum cerium chloride.

3. The method for preparing a rare earth-molybdenum antibacterial material according to claim 1, wherein: In step (1), the molar ratio of rare earth chloride, zinc chloride and zirconium oxychloride is (2-8):1:(2-8), and the rare earth ion concentration in the mixed solution is 0.3-0.9 mol / L.

4. The method for preparing a rare earth-molybdenum antibacterial material according to claim 1, wherein: In step (1), the amount of PEG added is 0.05-2% of the total mass of the rare earth chloride, zinc chloride and zirconium oxychloride, the amount of glacial acetic acid added is 1%-3% of the total mass of the rare earth chloride, zinc chloride and zirconium oxychloride, and the ammonium bicarbonate solution and citric acid or tartaric acid are added until the pH value of the system reaches 6.7-7, and the reaction is completed. The concentration of the ammonium bicarbonate solution is 2.53 mol / L, and the molar ratio of the amount of citric acid or tartaric acid added to the ammonium bicarbonate in the ammonium bicarbonate solution is 10:(1-2).

5. The method for preparing a rare earth-molybdenum antibacterial material according to claim 1, wherein: In step (1), the mixed solution is heated to 40-80°C, PEG and glacial acetic acid are added, and the precipitate is dried at a drying temperature of 80°C.

6. The method for preparing a rare earth-molybdenum antibacterial material according to claim 1, characterized in that: In step (2), the mass ratio of the first reactant, deionized water, concentrated phosphoric acid and 1-butyl-3-methylimidazole dibutyl phosphate is 1:(3-8):(0.2-0.3):(0.001-0.01), and the concentration of concentrated phosphoric acid is 14.63 mol / L.

7. The method for preparing a rare earth-molybdenum antibacterial material according to claim 1, characterized in that: In step (2), the heating temperature is 60°C, the reaction time is 0.5-2h, and the precipitate is dried at 80°C.

8. The method for preparing a rare earth-molybdenum antibacterial material according to claim 1, characterized in that: In step (3), the mass ratio of the second reactant to the ammonium molybdate solution is 1:(6-10), the concentration of the ammonium molybdate solution is 10wt%-15wt%, and the mass ratio of glacial acetic acid to the ammonium molybdate solution is (0.01-0.02):

1.

9. The method for preparing a rare earth-molybdenum antibacterial material according to claim 1, characterized in that: In step (3), the reaction time is 4 hours, the drying temperature is 80° C., the calcination temperature is 400-1000° C., and the calcination time is 4 hours.

10. A rare earth-molybdenum antibacterial material prepared by the method according to any one of claims 1 to 9, characterized in that: The rare earth-molybdenum antibacterial material has a particle size of 10nm-1500nm and a specific surface area of 10-100m 2 / g, and the molybdenum adsorption capacity is 1.0-4.0g / 100g.

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