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Nano titanium nitride-based composite photocatalytic material as well as preparation method and application thereof

A nano-composite material, nano-titanium nitride technology, applied in the direction of light water/sewage treatment, etc., can solve the problems of inactivation of microbial pathogens, efficient utilization of solar energy, etc., and achieve the effects of easy control, composite and interface protection, and composite structure stability.

Inactive Publication Date: 2017-01-04
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite material can be directly applied to solve the problems of organic matter degradation in water, inactivation of microbial pathogens and efficient utilization of solar energy

Method used

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  • Nano titanium nitride-based composite photocatalytic material as well as preparation method and application thereof
  • Nano titanium nitride-based composite photocatalytic material as well as preparation method and application thereof
  • Nano titanium nitride-based composite photocatalytic material as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1). According to 5mg / cm 2 Ratio, the nano-titanium nitride powder is evenly placed on the bottom of the crucible;

[0038] 2). Put the crucible into a reaction furnace with a temperature of 400°C to keep warm, and keep warm for 60 minutes in an oxygen-containing atmosphere (oxygen content 20vol.%);

[0039] 3). The crucible was taken out and air-cooled, and collected after cooling to room temperature to obtain a nano-titanium nitride-based composite material, marked as sample 1.

Embodiment 2

[0041] 1). According to 5mg / cm 2 Ratio, the nano-titanium nitride powder is evenly placed on the bottom of the crucible;

[0042] 2). Put the crucible into a reaction furnace with a temperature of 450°C to keep warm, and keep warm for 15 minutes in an oxygen-containing atmosphere (oxygen content 20vol.%);

[0043] 3). The crucible was taken out and air-cooled, and collected after cooling to room temperature to obtain a nano-titanium nitride-based composite material, marked as sample 2.

Embodiment 3

[0045] 1). According to 5mg / cm 2 Ratio, the nano-titanium nitride powder is evenly placed on the bottom of the crucible;

[0046] 2). Put the crucible into a reaction furnace with a temperature of 500°C to keep warm, and keep warm for 5 minutes in an oxygen-containing atmosphere (oxygen content 20vol.%);

[0047] 3). The crucible was taken out and air-cooled, and collected after cooling to room temperature to obtain a nano-titanium nitride-based composite material, marked as sample 3.

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Abstract

The invention discloses a nano titanium nitride-based composite photocatalytic material as well as a preparation method and application thereof, belonging to the technical fields of inorganic non-metallic nano material preparation, environmental protection technologies and solar energy utilization. According to the nano titanium nitride-based composite photocatalytic material, controllable surface oxidation is carried out on nanoscale titanium nitride particles, so that a composite photocatalytic material which takes nano titanium nitride as a core and titanium dioxide as a shell is formed. The nano titanium nitride-based composite photocatalytic material has adjustable optical adsorption property, thus being directly used for solving the problems of decomposition of organic matters under visible light, inactivation of microbial pathogens and efficient utilization of solar energy, and especially solving the problem of low photocatalytic efficiency of single-component photocatalytic materials.

Description

technical field [0001] The invention relates to the fields of preparation of inorganic non-metal nanomaterials, environmental protection technology and solar energy utilization technology, in particular to a nanometer titanium nitride-based composite photocatalytic material and its preparation method and application. Background technique [0002] Energy crisis and environmental pollution are two major problems faced by human beings in today's era. Photocatalytic technology can oxidize and mineralize almost any organic molecule into carbon dioxide and inorganic ions because it can effectively use solar energy, and degrade organic pollutants in water. The elimination of microorganisms such as bacteria and viruses in water has received widespread attention. Among many photocatalytic materials, some n-type semiconductors with wide bandgap, such as titanium dioxide, zinc oxide, tin oxide, etc., are widely used in photolysis of water to produce hydrogen due to their low toxicity, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/30
Inventor 李琦尚建库杨炜沂李超
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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