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C-TiO2/g-C3N4 composite photocatalytic material and synthesis method thereof

A technology of composite photocatalysis and synthesis method, applied in the field of C-TiO2/g-C3N4 composite photocatalytic material and its synthesis, can solve the problems of difficult preparation of composite photocatalyst, and achieve enhanced photocatalytic activity, high degradation efficiency, degradation selective effect

Pending Publication Date: 2022-03-01
TARIM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is to provide a C-TiO2 which uses biomass as a carbon source, has a heterogeneous structure, and has a significant response to visible light. 2 / g -C 3 N 4 Composite photocatalytic materials and their synthesis methods to address the current C-doped TiO 2 with g-C 3 N 4 Difficulties in the preparation of composite photocatalysts

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  • C-TiO2/g-C3N4 composite photocatalytic material and synthesis method thereof
  • C-TiO2/g-C3N4 composite photocatalytic material and synthesis method thereof
  • C-TiO2/g-C3N4 composite photocatalytic material and synthesis method thereof

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Embodiment Construction

[0058] This example prepares biomass carbon-doped TiO by hydrothermal method 2 , and then make C-TiO 2 with g-C 3 N 4 Coupling to form a heterojunction to synthesize C-TiO 2 / g -C 3 N 4 composite photocatalyst. The structural properties and chemical structure of the synthesized photocatalyst were analyzed by XRD; the chemical structure of the composite material was analyzed by XPS; the C-TiO 2 / g -C 3 N 4 The morphology and structural properties of the composites were analyzed. UV-Vis DRS and PL were used to characterize the optical properties of photocatalysts and determine the transfer efficiency of photogenerated carriers. The photocatalytic performance was evaluated by the degradation efficiency of methylene blue and tetracycline hydrochloride under visible light irradiation.

[0059] 1 Experimental part

[0060] 1.1 C-TiO 2 material preparation

[0061] Doping Biomass Carbon with TiO 2 , the specific scheme is: use cotton stalks as the biomass carbon source,...

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Abstract

The invention discloses a C-TiO2 / g-C3N4 composite photocatalytic material and a synthesis method thereof.The synthesis method comprises the following steps that 1, biomass serves as a carbon source, tetrabutyl titanate serves as a titanium source, and a C-TiO2 material is prepared through a hydrothermal reaction method; (2) putting melamine into a tubular furnace for sintering, and crushing a solid obtained after sintering, so as to prepare a g-C3N4 material; and (3) mixing the C-TiO2 material and the g-C3N4 material, fully grinding, and calcining the ground mixed powder in a tubular furnace to obtain the calcined powder, namely the C-TiO2 / g-C3N4 composite photocatalytic material. The composite photocatalytic material has heterojunction with matched energy levels, shows better visible light response, and has higher degradation efficiency on methylene blue and tetracycline hydrochloride under visible light.

Description

technical field [0001] The invention relates to the technical field of photocatalytic material synthesis. Specifically C-TiO 2 / g -C 3 N 4 Composite photocatalytic material and its synthesis method. Background technique [0002] With the rapid development of urbanization and industrialization, environmental pollution has become a global problem that needs to be solved urgently. Over the past few decades, photocatalysis has been widely recognized as a sustainable method for green energy technology and environmental restoration. Titanium dioxide, as one of the broadband gap semiconductor materials, is widely used in the fields of energy and environmental protection because of its high catalytic activity, strong chemical resistance, low toxicity to the human body and convenient source. However, TiO 2 The wide bandgap leads to low light utilization efficiency, which largely limits its application in the field of photocatalysis. All light-absorbing capabilities of catalyst...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J37/10
CPCB01J27/24B01J37/10B01J35/39
Inventor 姜建辉张园崔天伊田明霞焦宇江张顾宇
Owner TARIM UNIV
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