Carbon nitride antibacterial material, and preparation method and application thereof

An antibacterial material, carbon nitride technology, applied in chemical instruments and methods, botanical equipment and methods, applications, etc., can solve problems such as high cost and environmental pollution

Pending Publication Date: 2021-09-10
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing technologies achieve antibacterial and antiviral effects by adding more expensive metal nanomaterials or chemical molecules to the mask, which is costly and will cause environmental pollution

Method used

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  • Carbon nitride antibacterial material, and preparation method and application thereof
  • Carbon nitride antibacterial material, and preparation method and application thereof
  • Carbon nitride antibacterial material, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Embodiment 1: the synthetic method of carbon nitride antibacterial material comprises following specific steps:

[0030] Mix 10 grams of melamine, 10 grams of cyanuric acid, and 2 grams of a dopant molecule, 2,6-diaminopurine: Melamine is first dissolved in deionized water (500 mL), followed by cyanuric acid and 2,6-diaminopurine were dissolved in water respectively, and then the 2,6-diaminopurine aqueous solution was added dropwise into the melamine aqueous solution and fully stirred, and then the cyanuric acid aqueous solution was slowly added dropwise to 2, In the mixed solution of 6-diaminopurine and melamine, stir evenly, after standing still, use 200nm filter membrane to suction filter, obtain white cake-like precipitate, wash clean with deionized water, obtain melamine, cyanuric acid and dopant molecular self- Assembled precursors. Dry the precursor at 50°C, grind it evenly with a mortar, put it into a corundum boat, and then put it into a vacuum tube furnace pr...

Embodiment 2

[0032] Embodiment 2: According to the method of embodiment 1, melamine, cyanuric acid and doped heterocyclic molecule 2,6-diaminopurine are respectively 1:1:0, 1:1:0.3, 1 according to the mass ratio :1:0.5, 1:1:1.3 to prepare carbon nitride material, the electron paramagnetic resonance spectrum is as follows image 3 shown by image 3 It can be seen that with the gradual increase of the heterocyclic doping concentration, the gradual enhancement of the electron paramagnetic resonance spectrum signal indicates that the asymmetric lone pair electron number density in the carbon nitride material gradually increases, and the lone pair of the purine heterocycle Electrons have been efficiently embedded in the carbon nitride material.

Embodiment 3

[0033] Embodiment 3: According to the method of embodiment 1, melamine, cyanuric acid and doped heterocyclic molecule 2,6-diaminopurine are respectively 1:1:1.3, 1:1:1.7, 1 according to the mass ratio :1:2.5 Prepare carbon nitride material, the result is as follows Figure 4 as shown, Figure 4 The middle and infrared spectra are 2,6-diaminopurine from bottom to top and the ratio of melamine, cyanuric acid and doped heterocyclic molecule 2,6-diaminopurine is 1:1:0 when synthesized, respectively, 1:1:1.3, 1:1:1.7, 1:1:2.5 carbon nitride materials, from Figure 4 It can be seen that a small peak at 820 cm gradually becomes smaller as the heterocyclic doping concentration gradually increases.

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PUM

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Abstract

The invention discloses a carbon nitride antibacterial material, and a preparation method and application thereof. The preparation method of the carbon nitride antibacterial material comprises: (1) mixing melamine, cyanuric acid and doped molecule 2, 6-diaminopurine according to a mass ratio of 1: 1: (0.01-10), adding 2, 6-diaminopurine into a melamine aqueous solution, fully stirring, after uniform mixing, slowly dropwise adding a cyanuric acid aqueous solution into the mixed solution of the doped molecule and melamine, uniformly stirring, standing, and carrying out suction filtration to obtain a white cake-shaped precipitate, namely a self-assembled precursor; and (2) drying the precursor at 35-100 DEG C, uniformly grinding with a mortar, and calcining for 2 hours or more at 400-750 DEG C under the protection of inert gas to prepare the blocky carbon nitride material. The carbon nitride antibacterial material used in the invention is a novel inorganic non-metal nano material, and is convenient to synthesize and low in production cost.

Description

technical field [0001] The invention relates to an antibacterial material, in particular to a carbon nitride antibacterial material, a preparation method and an application thereof. Background technique [0002] The mask has a certain filtering effect on the air entering the human mouth, nasal cavity and lungs. Disposable medical masks or medical surgical masks basically have a three-layer structure: a single-layer adhesive non-woven fabric on both sides, a single-layer or multi-layer melt-blown non-woven fabric in the middle, and the middle melt-blown layer is also a filter layer. The fiber diameter of the filter layer is small and has static electricity, which can block particles or aerosols in the air, such as droplets and bacteria, through the cooperation mechanism of inertial collision, interception, electrostatic adsorption and diffusion. Existing medical masks cannot be cleaned effectively, so they need to be discarded immediately after use, and reusable masks have b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/00A01P1/00C01B21/082B82Y40/00A41D13/11A41D31/30
CPCA01N59/00C01B21/0605B82Y40/00A41D13/1192A41D31/305C01P2004/03
Inventor 王毅庆尤其克里斯布切贺兴臣刘凯苗宇飞顾芗
Owner NANJING UNIV
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