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Preparing method of niobate photocatalyst Bi3Nb17O47 and application of niobate photocatalyst Bi3Nb17O47

A technology of photocatalysis and photocatalytic materials, applied in the field of preparation of new inorganic photocatalyst materials Bi3Nb17O47, which can solve the problems of low electron-hole recombination rate and achieve the effect of simple preparation method, small particles and good ultraviolet response ability

Inactive Publication Date: 2016-05-25
苏州格瑞惠农膜材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] This patent application studies a new type of photocatalyst Bi 3 Nb 17 o 47 , found that the catalyst has excellent photocatalytic performance under ultraviolet light irradiation, and the electron-hole recombination rate is low. The literature search confirmed that there is no any report of this kind of work.

Method used

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  • Preparing method of niobate photocatalyst Bi3Nb17O47 and application of niobate photocatalyst Bi3Nb17O47
  • Preparing method of niobate photocatalyst Bi3Nb17O47 and application of niobate photocatalyst Bi3Nb17O47
  • Preparing method of niobate photocatalyst Bi3Nb17O47 and application of niobate photocatalyst Bi3Nb17O47

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Experimental program
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Effect test

Embodiment 1

[0041] According to the chemical formula Bi 3 Nb 17 o 47 , respectively weigh bismuth oxide Bi 2 o 3 : 1.748 g, niobium pentoxide Nb 2 o 5 : 5.63 grams, after adding an appropriate amount of acetone in an agate mortar, mixing and grinding evenly, pre-calcining in an air atmosphere, calcining at 400 ° C for 6 hours, and taking out the sample after natural cooling; After fully mixing and grinding in the bowl with the same method, calcining again in the air atmosphere, calcining at 1150°C for 12 hours, cooling and grinding to obtain bismuth niobate Bi 3 Nb 17 o 47 Photocatalyst powder.

[0042] See attached figure 1 , which is the X-ray powder diffraction pattern of the prepared sample according to the technical scheme of this embodiment, and the XRD test results show that the prepared bismuth niobate Bi 3 Nb 17 o 47 Good crystallinity, no impurity phase;

[0043] See attached figure 2 , which is the absorption spectrum of the sample prepared according to the techn...

Embodiment 2

[0048] According to the chemical formula Bi 2 Nb 10 o 28 , respectively weigh bismuth nitrate Bi(NO 3 ) 3 ·6H 2 O: 1.398 g, niobium pentoxide Nb 2 o 5 : 4.522 grams, after adding an appropriate amount of acetone in an agate mortar, mixing and grinding evenly, pre-calcining in an air atmosphere, calcining at 600 ° C for 8 hours, and taking out the sample after natural cooling; Method Mix well and grind evenly, calcinate again in air atmosphere, calcinate at 800°C for 9 hours, cool and grind to obtain bismuth niobate Bi 3 Nb 17 o 47 catalyst powder.

[0049] Its main structural appearance, absorption spectrum, SEM collection of illustrative plates, the degradation rate to methylene blue and the kinetic curve of degrading methylene blue are similar to embodiment 1.

Embodiment 3

[0051] According to the chemical formula Bi 3 Nb 17 o 47 , respectively weigh bismuth hydroxide Bi(OH) 3 : 1.165 g, niobium pentoxide Nb 2 o 5 : 3.768 grams, add an appropriate amount of acetone to the agate mortar, mix and grind evenly, then pre-calcine in the air atmosphere, calcined at 550 ° C for 6 hours, after natural cooling, take out the sample and use the same method to fully Mix and grind evenly, calcined again in air atmosphere, calcined at 1000°C for 10 hours, cooled and ground to obtain bismuth niobate Bi 3 Nb 17 o 47 catalyst powder.

[0052] Its main structural appearance, absorption spectrum, SEM collection of illustrative plates, the degradation rate to methylene blue and the kinetic curve of degrading methylene blue are similar to embodiment 1.

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Abstract

The invention discloses a niobate photocatalyst Bi3Nb17O47 and a preparing method thereof, and belongs to the field of inorganic photocatalytic materials. A high-temperature solid state method and a sol-gel method are adopted for the novel bismuth niobate photocatalytic material. The preparing method is simple and low in cost. In addition, the prepared material is uniform in particle size, good in chemical stability and photocatalytic performance and capable of effectively degrading organic pollutants under irradiation of ultraviolet light and is a novel photocatalytic material with potential.

Description

technical field [0001] The invention relates to a novel inorganic photocatalyst material Bi 3 Nb 17 o 47 The preparation method and application thereof are suitable for purifying air and degrading organic pollutants in water, and belong to the field of inorganic photocatalytic materials. Background technique [0002] In recent years, with the rapid development of society, the pollution of the ecological environment has become more and more serious, especially the pollution of organic matter. Most organic substances are highly toxic and difficult to degrade. The removal of organic pollutants has become an important task in the field of environmental protection. A large number of studies have shown that photocatalysis is favored by many researchers because of its environmental friendliness, its ability to effectively remove pollutants in the environment, especially in wastewater, and it consumes less energy and has no secondary pollution. The photocatalytic reaction can no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/20C02F1/30C02F1/72C02F101/38
CPCC02F1/30C02F1/725B01J23/002B01J23/20C02F2305/10B01J35/39Y02W10/37
Inventor 金浴雅徐洁马忠朱黄阳
Owner 苏州格瑞惠农膜材料科技有限公司
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