Transition metal oxide composite CNB photocatalyst and preparation method thereof

A transition metal, photocatalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, water pollutants, etc., can solve problems such as the absence of metal oxides

Inactive Publication Date: 2017-03-29
FUYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, g-C double-doped with metal oxides and

Method used

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  • Transition metal oxide composite CNB photocatalyst and preparation method thereof
  • Transition metal oxide composite CNB photocatalyst and preparation method thereof
  • Transition metal oxide composite CNB photocatalyst and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0069] (3) The preparation method provided by the invention is simple, easy to operate, and the yield of the photocatalyst product is high;

[0070] (4) The method is environmentally friendly and has no environmental pollution.

Embodiment 1

[0073] Weigh 10.0000g of urea and 0.0060g of sodium tetraphenylborate with an electronic balance, dissolve the weighed medicine in 15mL of distilled water, put the resulting solution in a water bath, and evaporate to dryness in a water bath at 80°C. Put it in a crucible, and then put it into a muffle furnace for calcination at 550°C for 2h. After cooling, take the crucible out of the muffle furnace, and grind the CNB sample in the crucible.

[0074] Accurately weigh 1.000g of CNB and put it in a dry and clean small beaker, then accurately weigh 0.0050g of Co 3 o 4 Put it into a small beaker, add 25mL of distilled water into the beaker, stir it with a magnetic stirrer for 1h, then remove the water in a water bath at 80°C, evaporate to dryness, and then put it into a muffle furnace at 300°C for calcination for 1h, then Cool naturally to prepare a catalyst sample, recorded as 0.5% Co3O4-CNB.

Embodiment 2

[0076] The method used in embodiment 2~4 is similar to embodiment, the difference is that the Co 3 o 4 The weights are 0.0100g, 0.0200g, 0.0500g respectively, and the prepared catalyst samples are recorded as 1% Co 3 o 4 -CNB (Example 2), 2% Co 3 o 4 -CNB (Example 3), 5% Co 3 o 4 - CNB (Example 4).

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Abstract

The invention provides a transition metal oxide composite CNB photocatalyst. The photocatalyst is formed by compositing CNB and a transition metal oxide with carbon, has good photocatalytic degradation effect on organic dyes, especially azo dyes or anthraquinone dyes, under ultraviolet light, and has the degradation rate on methyl orange reaching more than or equal to 75% especially after being radiated in the ultraviolet light for 1 h. The invention also provides a preparation method for the photocatalyst; the method comprises the steps of preparing CNB by doping a boron element in graphite-phase carbon nitride and then composting the CNB with the transition metal oxide, to prepare the composite photocatalyst; the method is simple and feasible to implement; the yield of preparation of the photocatalyst is high.

Description

technical field [0001] The invention relates to a novel composite photocatalyst for treating dye wastewater pollution and a preparation method thereof, in particular to a transition metal oxide composite CNB photocatalyst and a preparation method thereof. Background technique [0002] Graphite phase carbon nitride (abbreviated as g-C 3 N 4 ) is a new type of photocatalytic material due to its high photocatalytic activity, good stability, and cheap raw material prices. However, single-phase catalysts usually have unsatisfactory photocatalytic performance due to low quantum efficiency. g-C 3 N 4 The high photogenerated electron-hole recombination rate of the material leads to its low catalytic efficiency, which limits its application in photocatalysis. [0003] To improve g-C 3 N 4 In recent years, many modification methods have been studied. Currently, non-metal elements are usually used for g-C 3 N 4 For modification, the non-metallic elements used for modification ...

Claims

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Application Information

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IPC IPC(8): B01J27/24C02F1/30C02F101/38C02F101/34
CPCB01J27/24B01J35/004C02F1/30C02F2101/308C02F2101/34C02F2101/38
Inventor 崔玉民李慧泉苗慧陶栋梁
Owner FUYANG NORMAL UNIVERSITY
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