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Preparation of CD@NH2-UiO-66/g-C3N4 composite material and hydrogen production from photocatalytic water splitting

A technology of nh2-uio-66 and composite materials, which is applied in the fields of hydrogen, hydrogen production, chemical/physical processes, etc., can solve the problem of low hydrogen production efficiency from photo-splitting water, and achieve the effect of improving the performance of photo-splitting water for hydrogen production.

Inactive Publication Date: 2018-11-20
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low hydrogen production efficiency of existing materials by photolysis of water, and to provide a CD@NH 2 -UiO-66 / g-C 3 N 4 Preparation method of composite material

Method used

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  • Preparation of CD@NH2-UiO-66/g-C3N4 composite material and hydrogen production from photocatalytic water splitting
  • Preparation of CD@NH2-UiO-66/g-C3N4 composite material and hydrogen production from photocatalytic water splitting
  • Preparation of CD@NH2-UiO-66/g-C3N4 composite material and hydrogen production from photocatalytic water splitting

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Experimental program
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specific Embodiment approach 1

[0022] Specific implementation mode 1: a kind of CD@NH in this implementation mode 2 -UiO-66 / g-C 3 N 4 The preparation of the composite material is done in the following steps:

[0023] 1. g-C 3 N 4 preparation of

[0024] 2. NH 2 -UiO-66 / g-C 3 N 4 Preparation of composite materials: ZrCl 4 and 2-aminoterephthalic acid in a mixed solution of N,N,-dimethylformamide (DMF) and hydrochloric acid, and ultrasonically treated at an ultrasonic frequency of 35~45 KHz for 20~30 min, until fully dissolved After adding g-C 3 N 4 , the obtained mixed solution was placed in a hydrothermal reaction kettle and heated at 120 °C for 24 h, the product was filtered and washed three times with DMF / methanol, and then dried;

[0025] NH mentioned in step 2 2 -UiO-66 with g-C 3 N 4 The mass ratio is 5: 1;

[0026] DMF described in step 2 and hydrochloric acid volume ratio 5: 1;

[0027] 3. CD@NH 2 -UiO-66 / g-C 3 N 4 Preparation of composite materials: the above synthesized NH 2 -Ui...

specific Embodiment approach 2

[0031] Embodiment 2: This embodiment differs from Embodiment 1 in that the glucose concentration described in Step 3 is 5 mmol / L, and other steps and parameters are the same as Embodiment 1.

specific Embodiment approach 3

[0032] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the glucose concentration in Step 3 is 20 mmol / L, and other steps and parameters are the same as Embodiment 1 or 2.

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Abstract

The invention provides a preparation of a CD@NH2-UiO-66 / g-C3N4 composite material and hydrogen production from photocatalytic water splitting and relates to the preparation of the CD@NH2-UiO-66 / g-C3N4composite material and the hydrogen production from photocatalytic water splitting. The invention provides the CD@NH2-UiO-66 / g-C3N4 composite material in order to solve the problem that the hydrogenproduction efficiency of an existing material for hydrogen production from photocatalytic water splitting is low. The preparation of the CD@NH2-UiO-66 / g-C3N4 composite material comprises the steps of1, preparation of g-C3N4, 2, preparation of a NH2-UiO-66 / g-C3N4 composite material, and 3, preparation of the CD@NH2-UiO-66 / g-C3N4 composite material. The preparation of the CD@NH2-UiO-66 / g-C3N4 composite material has the advantages that the preparation process is simple and effective, the reagent consumption is less and the production rate is high; and a photocatalyst provided by the invention can effectively solve the problem that the efficiency of g-C3N4 for hydrogen production from photocatalytic water splitting is low. The preparation of the CD@NH2-UiO-66 / g-C3N4 composite material is applied to the field of hydrogen production from photocatalytic water splitting; and the experiment shows that the performance of the CD@NH2-UiO-66 / g-C3N4 composite material for hydrogen production from photocatalytic water splitting is excellent and the efficiency of hydrogen production from photocatalytic water splitting can reach 2.93 mmol.g-1.h-1.

Description

technical field [0001] The present invention relates to a CD@NH 2 -UiO-66 / g-C 3 N 4 Preparation of composite materials and hydrogen production by photolysis of water. Background technique [0002] With the rapid development of society and economy in today's society, people enjoy the comfort and convenience brought by scientific and technological achievements, and at the same time, the demand for energy is also increasing. The continuous consumption of energy has also brought a series of problems. The two most prominent problems are energy shortage and environmental pollution. At present, human activities basically rely on fossil energy, including oil, coal, natural gas, etc., but these resources are not renewable in a short period of time and are facing the plight of depletion. On the other hand, the combustion of fossil energy also brings environmental pollution problems, such as the greenhouse effect, water pollution, smog and a series of serious consequences are threa...

Claims

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Application Information

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IPC IPC(8): B01J27/24C01B3/04
CPCC01B3/042B01J27/24B01J35/39Y02E60/36
Inventor 张凤鸣盛敬莉孟祥斌姚宇豪王凌伟
Owner HARBIN UNIV OF SCI & TECH
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