Preparation and application fields of novel oxide modified graphite carbon nitride piezoelectric material
By preparing novel oxide-modified graphitic carbon nitride piezoelectric materials, the problem of insufficient activity of existing catalysts in degrading organic pollutants in water is solved, providing a high-efficiency and low-cost catalyst solution suitable for water treatment.
Patent Information
- Application Number
- CN202510846828.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-23
- Publication Date
- 2025-11-07
AI Technical Summary
Existing piezoelectric catalytic materials have insufficient catalytic activity in degrading organic pollutants such as antibiotics in water, and traditional biological treatment methods are ineffective. New treatment methods are needed to improve catalytic efficiency.
A novel oxide-modified graphitic carbon nitride piezoelectric material was activated by ultrasonic induction. The piezoelectric degradation activity of the catalyst was improved by the preparation method, including the treatment of the graphitic carbon nitride precursor and the introduction of oxides, to form a highly efficient catalyst.
It achieves efficient degradation of organic pollutants in water, especially antibiotics, and provides a stable catalytic activity and a low-cost catalyst preparation method, suitable for mass production.
Smart Images
Figure CN120900675A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application provides a preparation method and application of a novel oxide-modified graphite carbon nitride piezoelectric catalytic material, in particular to the application thereof in interface catalytic reaction and water purification field, and belongs to the field of research on preparation and application of novel functional materials. BACKGROUND
[0002] With the rapid development of society and the improvement of people's living standards, the problem of water resource pollution is becoming more and more serious, and a series of organic pollutants such as antibiotics and drugs appear in the water environment, how to efficiently degrade the organic pollutants in water is a research hotspot at present, the traditional biological method for treating wastewater has been unable to effectively solve this kind of emerging pollutants, and it is necessary to combine with new treatment methods to degrade the pollutants.
[0003] Piezoelectric catalysis technology triggers piezoelectric effect by changing mechanical energy or ultrasonic energy to generate alternating electric field to inhibit the recombination of electrons and holes, thereby improving the catalytic efficiency of the composite material, and has become one of the research hotspots in the field of water pollution treatment. In view of the shortcomings of the prior art, it is imperative to study an effective method for improving the catalytic activity of the catalyst. Piezoelectric catalytic oxygen reduction reaction (ORR) and water oxidation reaction (WOR) are a promising green route for large-scale production of hydrogen peroxide (H2O2). Piezoelectric generates a large number of hydroxyl radicals (·OH) by activating in-situ generated H2O2, and has broad application prospects in environmental pollution remediation. Therefore, the novel oxide-modified graphite carbon nitride can provide new insights for the development of environmental remediation water treatment. SUMMARY
[0004] The purpose of the present application is to overcome the shortcomings of the existing piezoelectric catalytic materials and applications, and to provide a novel oxide-modified graphite carbon nitride. The novel oxide-modified graphite carbon nitride piezoelectric material is activated by ultrasonic induction, and when applied to antibiotic degradation, it is found that the composite material exhibits extremely high piezoelectric degradation activity. The novel oxide-modified graphite carbon nitride can provide new insights for the development of catalysts for environmental remediation.
[0005] In order to achieve this purpose, the present application adopts the following technical scheme:
[0006] The technical scheme and steps of the novel oxide-modified graphite carbon nitride piezoelectric catalytic material preparation method and application are as follows:
[0007] 1) Introduce graphite carbon nitride precursor into a covered quartz crucible, and calcine in a muffle furnace to obtain a first intermediate.
[0008] 2) In 120ml distilled water, add 1.5g intermediate and 0.6g basic substance, stir for 1 hour, then transfer the mixture to a 200ml autoclave for heating, after the reaction is completed, rinse with water and dry overnight.
[0009] 3) Put the powder obtained in step 2 into a quartz crucible, heat at 400℃ in static air at a heating rate of 5℃min -1 , to obtain intermediate No. 2.
[0010] 4) After stirring 1g oxide and graphite carbon nitride together, ultrasonic mixing solution is obtained, and heating is carried out in a muffle furnace at a heating rate of 5℃min -1 at 500℃.
[0011] The advantages of the invention are summarized as follows: (1) The new composite piezoelectric catalyst provided by the invention has simple operation process, low cost and easy mass production. (2) The catalyst has remarkable purification effect in the catalytic system, and good stability, which provides scientific basis for future catalytic degradation of organic pollutants. (3) The catalytic piezoelectric material prepared by the invention has high service life and high catalytic activity, which can meet the requirements of environmental engineering application. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 is a scanning electron microscope photo of a new type of oxide modified graphite carbon nitride piezoelectric catalytic material prepared by the invention.
[0013] Figure 2 is a new type of oxide modified graphite carbon nitride material for rapid production of H2O2 experiment graph prepared by the invention. DETAILED DESCRIPTION
[0014] The specific embodiments of the invention are further illustrated in combination with the drawings and technical solutions.
[0015] (1) The graphite carbon nitride precursor is introduced into a covered quartz crucible, calcined at 600℃ for 2 hours at a heating rate of 5min-1, to obtain intermediate No. 1.
[0016] (2) In 120ml distilled water, add 1.5g intermediate No. 1 and 0.6g basic substance, stir for 1 hour, then transfer the mixture to a 200ml autoclave for heating at 150℃ for 8 hours. After the reaction is completed, rinse with water three times and dry at 80℃ overnight.
[0017] (3) Put the powder obtained in step 2 into a quartz crucible, heat at 400℃ in static air at a heating rate of 5℃min-1for 3 hours, to obtain intermediate No. 2.
[0018] (4) 1 g of the oxide and graphite cyanogen were stirred together and then ultrasonicated to obtain a mixed solution, which was heated at a temperature- increasing rate of 5°C min -1 at 500°C in a muffle furnace.
[0019] (5) The piezoelectric catalytic performance of the catalyst for generating H2O2 in a pure water environment was evaluated under normal pressure and ultrasonic vibration. The DPD-·OH method was used to measure the H2O2 calibration curve for determining the amount of H2O2 generated by piezoelectric catalysis.
Claims
1. A novel oxide modified graphite carbon nitride composite material preparation and application method, the technical scheme and steps are as follows: 1) The graphite carbon precursor is introduced into the covered quartz crucible, and is forged in the muffle furnace to obtain the first intermediate. 2) 1.5g of the first intermediate and 0.6g of alkaline substance are added into 120ml of distilled water, and after stirring for 1 hour, the mixture is transferred into the autoclave for heating, and after the reaction is completed, it is washed with water and dried overnight. 3) The powder from step 2 was placed in a quartz crucible and heated at a ramp rate of 5°C min -1 at 400°C under static air to give intermediate 2. 4) 1 g of oxide and graphite cyanamide were stirred together and ultrasonicated to obtain a mixed solution, which was heated at 500°C with a temperature increase rate of 5°C min -1 in a muffle furnace.
2. The preparation method and application of the novel oxide-modified graphite carbon nitride piezoelectric catalytic material according to claim 1, wherein the step 1) is calcined at 600 DEG C for 2 hours with a temperature rising rate of 5 min -1 to obtain the No. 1 intermediate.
3. The preparation method and application of the novel oxide modified graphite carbon nitride piezoelectric catalytic material according to claim 1, wherein the step 2) is heated in the autoclave for 8 hours at 150℃.
4. The preparation method and application of the novel oxide modified graphite carbon nitride piezoelectric catalytic material according to claim 1, wherein the heating time of the step 3) is 3 hours.
5. The polymer according to claim 1 can be Al2O3, Cu2O.