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Co-doped BZCYO photocatalyst as well as preparation method and application thereof

A photocatalyst and chemical formula technology, applied in the field of photocatalysis, can solve the problems that trouble researchers and the efficiency is not very high, and achieve the effect of reducing the recombination rate, increasing the utilization rate, and enhancing the catalytic efficiency

Inactive Publication Date: 2020-05-19
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the efficiency of converting materials into organic matter through photocatalysis has not been very high, and this problem has always troubled researchers

Method used

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  • Co-doped BZCYO photocatalyst as well as preparation method and application thereof
  • Co-doped BZCYO photocatalyst as well as preparation method and application thereof
  • Co-doped BZCYO photocatalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Photocatalyst Ba(Zr 0.5 Ce 0.3 Y 0.2 ) 0.99 co 0.01 o 3-δ The preparation method:

[0033] (1) First prepare a certain concentration of grinding liquid (including water as a solvent, wherein, containing 0.5wt% of PVA, 1wt% of PEG, 1wt% of PAA), with NH 3 ·H 2 O adjusts the pH value to pH=10;

[0034] (2) Weigh BaCO with a molar mass of 0.1mol (19.7340g) 3According to the stoichiometric ratio, weigh 6.0994g, 5.1120g, 4.4710g, 0.0749g of ZrO 2 , CeO 2 , Y 2 o 3 , CoO is placed in a polytetrafluoroethylene ball mill jar;

[0035] (3) Measure 5% of PVA, 1% of PEG, and 10mL of 1% of PAA with a measuring cylinder and pour them into the ball milling jar, then weigh 100g of zirconia ball milling beads, mix them with the sample prepared in the previous stage, and place Take out after 5 hours of rolling ball milling in the planetary ball mill, pour the taken-out ground sample into a freeze-drying tray, and place it in a four-ring freeze dryer to dry;

[0036] (4) Pl...

Embodiment 2

[0039] Photocatalyst Ba(Zr 0.5 Ce 0.3 Y 0.2 ) 0.97 co 0.03 o 3-δ The preparation method:

[0040] (1) First prepare a certain concentration of grinding liquid (including water as a solvent, wherein, containing 0.5wt% of PVA, 1wt% of PEG, 1wt% of PAA), with NH 3 ·H 2 O adjusts the pH value to pH=10;

[0041] (2) Weigh BaCO with a molar mass of 0.1mol (19.7340g) 3 According to the stoichiometric ratio, weigh 5.9762g, 5.0087g, 4.3807g, 0.2248g of ZrO 2 , CeO 2 , Y 2 o 3 , CoO is placed in a polytetrafluoroethylene ball mill jar;

[0042] (3) Measure 5% of PVA, 1% of PEG, and 10mL of 1% of PAA with a measuring cylinder and pour them into the ball milling jar, then weigh 100g of zirconia ball milling beads, mix them with the sample prepared in the previous stage, and place Take out after 5 hours of rolling ball milling in the planetary ball mill, pour the taken-out ground sample into a freeze-drying tray, and place it in a four-ring freeze dryer to dry;

[0043] (4) P...

Embodiment 3

[0046] Photocatalyst Ba(Zr 0.5 Ce 0.3 Y 0.2 ) 0.95 co 0.05 o 3-δ The preparation method:

[0047] (1) First prepare a certain concentration of grinding liquid (including water as a solvent, wherein, containing 0.5wt% of PVA, 1wt% of PEG, 1wt% of PAA), with NH 3 ·H 2 O adjusts the pH value to pH=10;

[0048] (2) Weigh BaCO with a molar mass of 0.1mol (19.7340g) 3 According to the stoichiometric ratio, weigh 5.8530g, 4.9054g, 4.2904g, 0.3747g of ZrO 2 , CeO 2 , Y 2 o 3 , CoO is placed in a polytetrafluoroethylene ball mill jar;

[0049] (3) Measure 5% of PVA, 1% of PEG, and 10mL of 1% of PAA with a measuring cylinder and pour them into the ball milling jar, then weigh 100g of zirconia ball milling beads, mix them with the sample prepared in the previous stage, and place Take out after 5 hours of rolling ball milling in the planetary ball mill, pour the taken-out ground sample into a freeze-drying tray, and place it in a four-ring freeze dryer to dry;

[0050] (4) P...

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Abstract

The invention provides a Co-doped BZCYO photocatalyst, a preparation method and application of the Co-doped BZCYO photocatalyst in photoinduced water decomposition and photocatalytic reduction of CO2in a photoinduced reaction. The chemical formula of the Co-doped BZCYO photocatalyst is Ba (Zr < 0.5 > Ce < 0.3 > Y < 0.2 >) < 1-x > Co < x > O < 3-delta >, and x is greater than or equal to 0.01 andless than or equal to 0.09. The preparation method comprises the following steps: preparing a grinding fluid, and putting the raw materials into a polytetrafluoroethylene ball milling tank for ball milling; freeze-drying and calcining; final uniform grinding. Due to the existence of Co, a Cn product with a long carbon chain can be formed, the preparation method of the catalyst is simple, on one hand, the catalytic activity of the catalyst is improved through doping and photo-thermal coupling tests, and on the other hand, the multi-carbon alkane with a high conversion rate is obtained through Co doping.

Description

technical field [0001] The invention relates to the field of photocatalysis, in particular to a proton-type perovskite photocatalyst BaZr doped with different proportions of transition metal Co 0.5 Ce 0.3 Y 0.2 o 3-δ Preparation of (BZCYO) and its photocatalytic reduction of CO 2 into multi-carbon alkanes. Background technique [0002] With the continuous improvement of the quality of human life, the rapid development of global industry, and the increasing energy consumption, the resulting climate change and energy shortage are the biggest challenges facing mankind. In recent years, global warming is a huge environmental problem facing mankind, CO 2 As the most important greenhouse gas, it is the main factor causing global warming. Currently solving CO 2 The most ideal way is to convert carbon dioxide into organic matter through solar energy. Organic matter can be used as chemical fuel. This method not only solves the problem that fossil fuels cannot wait for the shor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83C07C1/10C07C9/04C07C9/08C07C9/06C10G2/00
CPCB01J23/002B01J23/83C07C1/10C10G2/332B01J2523/00C07C2523/83B01J35/39B01J2523/25B01J2523/36B01J2523/3712B01J2523/48B01J2523/845C07C9/04C07C9/06C07C9/08
Inventor 赵喆田金旦任亚男刘露璐王操郭强胜
Owner SHANGHAI INST OF TECH
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