Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of au-pcn-cnt composite material and its preparation method and application

A composite material and nano-composite material technology, applied in the field of catalysts, can solve the problems of hindering the migration of photogenerated electrons, the interface contact is not tight, and achieve the effect of highlighting the catalytic performance, reducing the synthesis temperature, and stabilizing the catalytic performance.

Active Publication Date: 2022-05-17
WENZHOU UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since CNTs and g-C 3 N 4 The mismatch of the synthesis temperature, in the previous work, the two are mostly combined by mechanical mixing, which will lead to a loose interface contact, which greatly hinders the migration of photogenerated electrons between the two

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
  • A kind of au-pcn-cnt composite material and its preparation method and application
  • A kind of au-pcn-cnt composite material and its preparation method and application
  • A kind of au-pcn-cnt composite material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A kind of Au-PCN-CNT composite material, its preparation method comprises the following steps:

[0050] 1. Synthesis of porous g-C 3 N 4 nanomaterials:

[0051] S1: Add 4g of melamine into 400mL of deionized water, stir to disperse evenly to obtain a melamine dispersion, then add 4.8g of phosphorous acid to the melamine dispersion, stir well until the phosphorous acid is completely dissolved, and then place it in an oil bath at 80°C After the reaction was completed, the solution became clear and transparent, and then the solution was transferred to a tetrafluoroethylene reactor and reacted at a constant temperature at 180°C for 10 hours. After the reaction was completed, it was naturally cooled to room temperature, and the obtained product was washed with deionized water and Ethanol was centrifuged and washed 3 times, and then dried in a drying oven at 60°C to obtain the melamine precursor;

[0052] S2: Weigh 6g of the melamine precursor obtained in S1, stir and disp...

Embodiment 2

[0067] Comparison of the photocatalytic performance differences of PCN, Au-PCN and Au-PCN-CNT composite materials prepared in Example 1:

[0068] Take 25mg of powder samples (respectively PCN, Au-PCN and Au-PCN-CNT composite materials prepared in Example 1) and disperse them in 100mL of 10% volume fraction triethanolamine solution, ultrasonically disperse them for 20min and put them into the photocatalytic reaction Stir continuously in the container, keep the temperature of circulating cooling water at 6°C, then evacuate the reaction container with a vacuum pump until the reaction system is in an approximate vacuum state (P≤1.0kpa), use a 300W xenon lamp to continuously illuminate the reactor for 3 hours, every 1 hour The gas in the reaction tank is extracted by the autosampler and sent to the gas chromatograph, and the gas chromatograph is detected online in real time, and the reaction product and the amount produced are judged according to the position of the peak and the siz...

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
diameteraaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to an Au-PCN-CNT composite material and its preparation method and application. The Au-PCN-CNT composite material is obtained by densely stacking ultra-thin two-dimensional porous graphite phase PCN nanosheets, and is uniform on the surface of the PCN nanosheets. distributed with Au nanoparticles and in situ grown CNTs. In the Au-PCN-CNT composite material provided by the present invention, the three phases of Au nanoparticles, CNT and PCN can be firmly combined, and because of the structure of PCN porous nanosheets, the specific surface area of ​​the composite material is large, and it has outstanding and stable catalytic performance and hydrogen production. The rate reaches 0.95mmol·g ‑1 h ‑1 .

Description

technical field [0001] The invention belongs to the technical field of catalysts containing nitrogen compounds, and specifically relates to an Au-PCN-CNT composite material and its preparation method and application. Background technique [0002] With the development of industrial society, the demand for fossil energy in countries around the world is increasing year by year, which has exacerbated the consumption of fossil fuels. The rapid reduction of such non-renewable energy reserves seriously threatens the sustainable development of the future world. In addition, the greenhouse gases and toxic and harmful substances caused by the burning of fossil fuels also greatly affect the earth's ecological environment, thereby threatening people's lives and health. Therefore, exploring and developing new energy sources has become an effective and sustainable development path. Among them, solar energy stands out among the new energy sources due to its advantages of inexhaustibility,...

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): B01J27/24B01J35/02B01J35/10C01B3/04B01J35/00
CPCB01J27/24C01B3/042C01B2203/0277C01B2203/1094B01J35/393B01J35/40B01J35/613B01J35/647B01J35/39Y02E60/36
Inventor 徐全龙夏志华
Owner WENZHOU UNIV