Preparation method and application of lamellar UiO-66/g-C3N4/Ag composite material

A composite material, g-c3n4 technology, applied in the field of preparation of layered UiO-66/g-C3N4/Ag composite material, can solve the problem of rapid recombination hindering photocatalytic reaction, and achieve excellent adsorption and photocatalytic effect, stability Good, the effect of material innovation

Inactive Publication Date: 2019-04-09
CHANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, g-C 3 N 4 The low surface area of ​​the material provides limited catalytic sites,...

Method used

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  • Preparation method and application of lamellar UiO-66/g-C3N4/Ag composite material
  • Preparation method and application of lamellar UiO-66/g-C3N4/Ag composite material
  • Preparation method and application of lamellar UiO-66/g-C3N4/Ag composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Protonated g-C 3 N 4 By conventional solvothermal synthesis. Specifically, proceed as follows:

[0028] (1) Disperse 5 g of melamine into 300 ml of HCl solution (2M) and stir for 2 hours, then filter, wash with deionized water and dry at 100° C. to obtain a white powder.

[0029] (2) Place the above white powder evenly in 6 sealed crucibles and calcinate in a tube furnace for 4 hours (550°C, 5°C / min) to obtain a light yellow powder, which is g-C 3 N 4 .

[0030] (3) The protonation process is as follows: 1g of g-C 3 N 4 Ultrasonic dispersion into 60ml of HCl solution (6M), then charged into a 100ml reactor and heated at a temperature of 100°C.

[0031] (4) Then the cooled g-C 3 N 4 The mixture was washed with deionized water until the solution was neutral, and then dried in a vacuum oven at 100 °C to obtain protonated g-C 3 N 4 .

[0032] UiO-66 was also synthesized by solvothermal method. Specifically follow the steps below:

[0033] (1) 0.386g (1.67mmol)...

Embodiment 2

[0045] Adopt the same preparation method as Example 1, change g-C 3 N 4 The amount of solution added, the prepared UiO-66 / g-C 3 N 4 / Ag(10).

Embodiment 3

[0047] Adopt the same preparation method as Example 1, change g-C 3 N 4 The amount of solution added, the prepared UiO-66 / g-C 3 N 4 / Ag(20).

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Abstract

The invention belongs to the technical field of composite nano-materials, and relates to a preparation method and application of a lamellar UiO-66/g-C3N4/Ag composite material. The preparation methodcomprises the following steps: protonizing g-C3N4, combining the protonized g-C3N4 with UiO-66 to obtain UiO-66/g-C3N4; successfully loading Ag onto UiO-66/g-C3N4 to form a novel ternary composite material UiO-66/g-C3N4/Ag, and proving with a scanning electron microscope. According to the preparation, The UiO-66/g-C3N4/Ag composite material is a high-efficiency photocatalytic material, and the lamellar composite material has an important effect in different fields including adsorption, photocatalysis, energy storage and the like. The UiO-66/g-C3N4/Ag composite material provides important standard to lamellar nano-structures combined from MOF, g-C3N4 and noble metal semiconductors to improve the photocatalytic performance of the material, so that organic pollutants can be better degraded.

Description

technical field [0001] The invention belongs to the technical field of nanocomposite materials, and relates to a layered UiO-66 / g-C 3 N 4 / Ag composite material preparation method and its performance research. Background technique [0002] With the continuous consumption of various energy sources and the development of society, the removal of a large number of pollutants has attracted more and more attention from researchers. Photocatalytic technology is favored by people because of its simple operation, low energy consumption, no secondary pollution and high efficiency. However, some issues such as rapid recombination of photoelectron-hole pairs, poor visible light response, and insufficient specific surface area limit the applications of many conventional catalysts. [0003] Metal-organic frameworks (MOFs), a new class of microporous materials that have become popular in recent years, are formed by linking organic ligands with transition metal ions. Owing to some prope...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01J35/00B01J35/02B01J37/34C02F1/30C02F101/30
Inventor 冯胜王润柏刘曙光孙佳佳
Owner CHANGZHOU UNIV
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