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Preparation method of composite material capable of realizing high efficiency adsorption-photocatalysis degradation of antibiotics

A composite material and photocatalysis technology, applied in the field of materials science, can solve problems such as poor effect, and achieve the effect of significant technological progress, good adsorption effect, and improved removal effect.

Inactive Publication Date: 2018-11-13
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a method for preparing a composite material for efficient adsorption-photocatalytic degradation of antibiotics, and the method for preparing a composite material for efficient adsorption-photocatalytic degradation of antibiotics needs to solve In the prior art, there is a technical problem that the effect of removing persistent antibiotics with strong stability in wastewater is not good

Method used

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  • Preparation method of composite material capable of realizing high efficiency adsorption-photocatalysis degradation of antibiotics
  • Preparation method of composite material capable of realizing high efficiency adsorption-photocatalysis degradation of antibiotics
  • Preparation method of composite material capable of realizing high efficiency adsorption-photocatalysis degradation of antibiotics

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Effect test

Embodiment 1

[0020] g-C 3 N 4 Preparation: Weigh a certain quality of melamine and place it in a covered crucible, then put it in a muffle furnace and raise it to 500℃, keep it warm for 2h and then raise it to 520℃, keep it for 2h and then drop to room temperature, and grind the obtained product for backup use. Subsequently, weigh a certain mass of powder and spread it in a porcelain boat, place it in a muffle furnace and raise it to 520℃, and calcinate for 6 hours to obtain g-C 3 N 4 .

[0021] figure 1 It is the g-C prepared in Example 1 of the present invention 3 N 4 Scanning electron microscope (SEM) photos, you can see the g-C obtained by each system 3 N 4 A sheet structure.

Embodiment 2

[0023] g-C 3 N 4 / HAp composite material preparation: prepare 30mL, 0.2M CaCl respectively 2 And Na 2 CO 3 Solution, will be prepared with CaCl 2 The solution was poured into 300mL, 10mg / mL polystyrene sodium sulfonate (PSS) solution, and then Na 2 CO 3 The solution was added dropwise to the above solution, stirred at room temperature for 1 hour, after centrifugal drying, white powdery CaCO was obtained 3 , Weigh out 0.17g Na 2 HPO 4 , Formulated into 0.1M Na 2 HPO 4 Solution, weigh 0.2g CaCO 3 Join Na 2 HPO 4 In the solution, weigh 15wt% g-C 3 N 4 Dissolve in the above solution, then adjust the pH to 11 with 0.1M NaOH, place in an autoclave at 120°C for 1 hour, centrifuge and dry to obtain g-C 3 N 4 / HAp composite material.

[0024] figure 2 This is the g-C prepared in Example 2 of the present invention 3 N 4 The X-ray powder diffraction (XRD) spectrum of the / HAp composite material was confirmed to be consistent with JCPDS#09-0423, indicating that the product obtained was of high...

Embodiment 3

[0029] Adsorption-photocatalytic performance experiment: weigh 0.1g of g-C 3 N 4 / HAp composite material is placed in 100mL, 50mg / L tetracycline solution, dark reaction for 40min to reach the adsorption-desorption equilibrium; using Porfila 300WXe xenon lamp as the light source, simulating sunlight, take 4mL every 5min after the start of illumination The sample was centrifuged, the supernatant was placed in a cuvette, and the absorption value of tetracycline was measured by Shimadzu UV-2550 ultraviolet spectrophotometer, using C / C 0 To evaluate the degradation rate, where C is the concentration of tetracycline in the sample after a certain period of light, C 0 Is the initial tetracycline concentration of the sample.

[0030] Image 6 This is the g-C prepared in Example 2 of the present invention 3 N 4 The adsorption-photocatalytic performance curve of tetracycline by / HAp composite material. The experimental results show that the obtained product has very fast and efficient adsorp...

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Abstract

The invention provides a preparation method of a composite material capable of realizing high efficiency adsorption-photocatalysis degradation of antibiotics. The preparation method comprises following steps: a CaCl2 solution is added into a sodium polystyrenesulfonate solution; Na2CO3 solution is added into an obtained mixed solution drop by drop, stirring is carried out at room temperature, centrifugation and drying are carried out so as to obtain white powdery CaCO3; the CaCO3 and Na2HPO4 are dissolved in deionized water, wherein the molar ratio of Ca element to P element is controlled to be 1.67; a certain amount of g-C3N4 is added, the pH value is adjusted to 11, and an obtained mixture is introduced into a high pressure reaction vessel for 0.5 to 2h of hydro-thermal reaction at 100 to 140 DEG C, and centrifugation drying is carried out so as to obtain a g-C3N4 / HAp composite material. The g-C3N4 / HAp composite material is capable of improving pollutant eliminating effect through cooperative effect of adsorption and photocatalysis.

Description

Technical field [0001] The invention belongs to the field of materials science, and relates to a composite material, specifically a g-C that efficiently adsorbs and photocatalyzes the degradation of antibiotic 3 N 4 / HAp composite material preparation method. Background technique [0002] In recent years, the world has faced severe challenges from energy shortages and environmental pollution. Solving the increasingly serious energy and environmental crises is an urgent need to ensure world harmony, stability and sustainable development. Antibiotics are widely used in the treatment of human and animal diseases due to their high efficiency, broad spectrum, oral activity, and complete cross-sense resistance. In addition, antibiotics are often used to increase the output of animal husbandry and aquaculture. According to statistics, China has become the world's largest antibiotic use and production country. At present, the environmental pollution and ecotoxicological effects caused b...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J20/04B01J20/30C02F1/28C02F1/30C02F101/38C02F101/30
CPCB01J20/0259B01J20/048C02F1/281C02F1/30B01J27/24C02F2305/10C02F2101/30C02F2101/38B01J2220/4806B01J2220/42B01J2220/4812B01J35/39
Inventor 吴强徐天红姚伟峰雷晓芳程晨
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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