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Prepn process of efficient visible light photocatalyst and photoelectric conversion and luminescent material TiOxNyCz

A technology of photocatalysts and luminescent materials, applied in chemical instruments and methods, physical/chemical process catalysts, circuits, etc., can solve the problems of unsuitability for large-scale industrial production, high cost of raw materials, complicated process, etc., and achieve good visible photocatalytic performance , short process, and strong photoluminescent performance

Inactive Publication Date: 2007-03-21
HENAN UNIVERSITY OF TECHNOLOGY
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned multi-element doping is either complicated and difficult to control, or the cost of raw materials is high, and it is not suitable for large-scale industrial production

Method used

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  • Prepn process of efficient visible light photocatalyst and photoelectric conversion and luminescent material TiOxNyCz
  • Prepn process of efficient visible light photocatalyst and photoelectric conversion and luminescent material TiOxNyCz
  • Prepn process of efficient visible light photocatalyst and photoelectric conversion and luminescent material TiOxNyCz

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Alcoholyze 10mL of titanium tetrachloride with 60mL of methanol, heat to boiling at about 63°C, add 100g of urea, dissolve, cool, solidify, and calcinate in a muffle furnace at 200, 400, 600, and 800 degrees respectively to obtain the composition TiO with different compositions x N y C z powder.

[0025] Attached table is the element content of the sample under several burning temperatures of Example 1

[0026]

Embodiment 2

[0028] Hydrolyze 5mL of titanium tetrachloride with 10mL of water first, then add 100mL of methanol, heat to about 55°C, add 200g of urea, dissolve, cool, solidify, and calcinate in a muffle furnace at 200, 400, 600, and 800 degrees respectively , to get TiO x N y C z sample.

Embodiment 3

[0030] Alcoholyze 10 mL of titanium tetrachloride with 100 mL of methanol, heat to boiling, add 200 grams of urea, dissolve, cool, solidify, and calcinate in a muffle furnace at 300 degrees to obtain light yellow TiO x N y C z powder.

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Abstract

The preparation process of efficient visible light photocatalyst and photoelectric converting and luminescent material TiOxNyCz with the material including titanium tetrachloride as main material, water, methanol and urea in the weight ratio of 1 to 0-10 to 1-50 to 2-50 includes the following steps: adding water and methanol into titanium tetrachloride, heating to boil, adding urea while stirring, cooling to cure, and igniting at 200-1000 deg.c to obtain the target product with composition depending on the igniting temperature. Thus prepared doped titanium dioxide material has excellent visible light photocatalyzing performance, and high photoluminescence performance. The sample with igniting temperature below 400 deg.c has excellent photocatalyzing performance under sunlight and fluorescent lamp light, methyl orange degrading rate up to 99.8 %, continuous lightning in 330-500 nm, and high sunlight utilization.

Description

technical field [0001] The present invention relates to the preparation method of photoelectric material of chemical raw material, especially a kind of high-efficiency visible light photocatalyst and photoelectric conversion and luminescent material TiO x N y C z method of preparation. Background technique [0002] Titanium dioxide, as a wide bandgap semiconductor, is particularly attractive due to its stable properties, non-toxicity and high photocatalytic activity. But TiO 2 (Anatase) has a band gap of 3.2eV, and can only show catalytic activity under the excitation of ultraviolet light. However, the energy of ultraviolet light in sunlight accounts for only 4%, while the energy of visible light accounts for 43%. How to modify TiO 2 It has been a research hotspot to make it active under the excitation of visible light or even indoor light source. Therefore, in order to effectively utilize sunlight, it is of great practical significance to study catalytic materials wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J27/24H01L51/50H01L51/54
Inventor 李道荣胡长文吴佐林
Owner HENAN UNIVERSITY OF TECHNOLOGY
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