Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Carbon nitride photocatalytic material doped with heterogeneous elements and its preparation method and application

A technology of heterogeneous elements and catalytic materials, applied in chemical instruments and methods, physical/chemical process catalysts, non-metallic elements, etc., to achieve the effects of increasing porosity, simplifying the process, and improving performance

Active Publication Date: 2021-01-12
德州新动能铁塔发电有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Again for example CN107008496A discloses a kind of preparation method of lipophilic modified graphite phase carbon nitride, after graphite phase carbon nitride is mixed with organic modifier, add ultrasonic in glacial acetic acid, then transfer to hydrothermal kettle for water heating Thermal reaction, finally the sample is washed to neutral, and dried to obtain modified graphite phase carbon nitride. This method is simple to prepare, but only organically modifies the material to improve the solubility of carbon nitride materials in organic solvents.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Carbon nitride photocatalytic material doped with heterogeneous elements and its preparation method and application
  • Carbon nitride photocatalytic material doped with heterogeneous elements and its preparation method and application
  • Carbon nitride photocatalytic material doped with heterogeneous elements and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The first aspect of the present invention provides a method for preparing a carbon nitride photocatalytic material doped with heterogeneous elements, comprising the following steps:

[0032] (1) reacting the graphite-phase carbon nitride precursor and the plant extract in a solution to obtain a gel material, wherein the plant extract is a mixture containing phosphorus-containing compounds and inositol extracted from plants;

[0033] (2) Calcining the gel material by temperature programming under the protection of an inert gas to prepare a carbon nitride photocatalytic material doped with heterogeneous elements.

[0034] step 1)

[0035] Specifically, the graphitic carbon nitride precursor in step (1) of the present invention is generally a C-rich and N-rich compound, examples of which include but are not limited to melamine, dicyandiamide, cyanamide, thiourea and urea. The plant extract of the present invention is a mixture obtained by extracting plants as raw materi...

Embodiment 1

[0044] This embodiment is an exemplary extraction and detection process of plant extracts used in the preparation process of heterogeneous element-doped carbon nitride photocatalytic materials. The specific steps are as follows:

[0045] a. use sodium sulfate and acetic acid solution to soak the selected rapeseed meal to obtain the soaking liquid, and use a pH meter to adjust the pH value of the solution at 2.5;

[0046] b. filter the resulting soaking solution, then neutralize it with a 10% sodium hydroxide solution to obtain a neutralizing solution, and use a pH meter to adjust the pH value of the solution to 7.5;

[0047] c. Filtrating the neutralization solution to obtain a precipitate, and performing secondary acidification of the obtained precipitate with 1 mol / l hydrochloric acid, and using a pH meter to adjust the pH value of the solution to 1.5 to obtain a plant extract.

Embodiment 2

[0049] This embodiment is another exemplary extraction and detection process of the plant extract used in the preparation process of the heterogeneous element-doped carbon nitride photocatalytic material. The specific steps are as follows:

[0050] a. use sodium sulfate and acetic acid solution to soak the selected rapeseed meal to obtain the soaking liquid, and use a pH meter to adjust the pH value of the solution at 2.5;

[0051] b. filter the resulting soaking solution, then neutralize it with a solution containing 10% sodium hydroxide and 5% ammonium sulfate to obtain a neutralizing solution, and use a pH meter to adjust the pH value of the solution to 7.5;

[0052] c. Filtrating the neutralization solution to obtain a precipitate, and performing secondary acidification of the obtained precipitate with 1 mol / l hydrochloric acid, and using a pH meter to adjust the pH value of the solution to 1.5 to obtain a plant extract.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses heterogeneous element-doped carbon nitride photocatalytic materials and preparation methods and applications thereof. The preparation method of the heterogeneous element-doped carbon nitride photocatalytic material includes: (1) reacting a graphite phase carbon nitride precursor and a plant extract in a solution to obtain a hydrogel material, wherein the plant extract is a plant-based It is a mixture containing phosphorus-containing compounds and myo-inositol obtained by extraction of raw materials; freeze-drying the hydrogel material to obtain an airgel material; (2) roasting the airgel material through programmed temperature rise under the protection of inert gas to prepare A heterogeneous element-doped carbon nitride photocatalytic material was obtained. The invention utilizes the electrostatic and hydrogen bonding interactions between plant extracts and graphite phase carbon nitride precursors to arrange and assemble the materials in an orderly manner, thereby improving the photocatalytic performance. Moreover, the phosphorus source used does not have any toxicity or side effects, and the product purity is high. High, simple process flow, high hydrogen production rate, suitable for industrial large-scale production.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a carbon nitride photocatalytic material doped with heterogeneous elements and a preparation method and application thereof. Background technique [0002] In the graphitic phase carbon nitride (g-C 3 N 4 ) catalysts, g-C with a stable layered structure similar to graphene 3 N 4 Widely used in the field of heterogeneous catalysis, its band gap and semiconductor band edge position can meet the thermodynamic requirements of photocatalytic conversion. Compared with other photocatalysts, its advantages are very prominent: good thermal and chemical stability, The source is abundant and the preparation process is simple. g-C 3 N 4 The structure determines that it has a wide range of applications. Currently, g-C 3 N 4 Mainly used in photo-splitting water to produce hydrogen and photocatalytic reduction of CO 2 , photocatalytic pollutant degradation and sterilization, etc., but it faces...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24C01B3/04
CPCB01J27/24C01B3/042B01J35/39Y02E60/36
Inventor 张丁朱玉坤石爱民陈筱林
Owner 德州新动能铁塔发电有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com