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Ce-doped W18O49 nanowire photocatalyst and preparation method thereof

A technology of W18O49 and photocatalyst, which is applied in the field of photocatalytic nitrogen fixation materials, can solve the problems of insufficient photocatalytic nitrogen fixation performance of nanowires, achieve high photocatalytic nitrogen fixation activity and stability, simple preparation method, and improve the efficiency of photocatalytic nitrogen fixation

Pending Publication Date: 2021-07-02
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first object of the present invention is to provide a Ce-doped W 18 o 49 Nanowire photocatalyst preparation method to solve the existing W 18 o 49 The problem that the photocatalytic nitrogen fixation performance of nanowires is not excellent enough

Method used

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  • Ce-doped W18O49 nanowire photocatalyst and preparation method thereof
  • Ce-doped W18O49 nanowire photocatalyst and preparation method thereof
  • Ce-doped W18O49 nanowire photocatalyst and preparation method thereof

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Embodiment 1

[0029] A Ce-doped W 18 o 49 Nanowire photocatalyst preparation method, comprising the following steps:

[0030] First weigh 0.3g WCl 6 Pour the sample into a beaker, then weigh 70mL of ethanol into the beaker with a measuring cylinder, add a magnet and stir for 30 minutes. Then add 0.1553mg CeCl 3 , CeCl 3 The molar ratio to tungsten hexachloride is 0.5%, and then stirred for 10 minutes. After the stirring is completed, the mixed solution is transferred to a 100mL reaction kettle, and the solvent is carried out at a temperature of 200°C and a holding time of 12h. Thermal reaction, centrifuge the sample after the reaction kettle is naturally cooled, wash with ethanol 2-3 times, and then put it in a 60°C oven to dry for later use.

Embodiment 2

[0032] A Ce-doped W 18 o 49 Nanowire photocatalyst preparation method, comprising the following steps:

[0033] First weigh 0.3g WCl 6 Pour the sample into a small beaker, then weigh 70mL of ethanol into the beaker with a measuring cylinder, add a magnet and stir for 30 minutes. Then add 0.3107mg CeCl 3 , CeCl 3 The molar ratio to tungsten hexachloride is 1%, and then stirred for 10 minutes. After the stirring is completed, the mixed solution is transferred to a 100mL reaction kettle, and the solvent is carried out at a temperature of 200°C and a holding time of 12h. Thermal reaction, centrifuge the sample after the reaction kettle is naturally cooled, wash with ethanol 2-3 times, and then put it in a 60°C oven to dry for later use.

Embodiment 3

[0035] A Ce-doped W 18 o 49 Nanowire photocatalyst preparation method, comprising the following steps:

[0036] Put the 100mL small beaker on the table, first weigh 0.3g WCl 6 Pour the sample into a small beaker, then weigh 70mL of ethanol into the beaker with a measuring cylinder, add a magnet and stir for 30 minutes. Then add 0.6215mg CeCl 3 , CeCl 3 The molar ratio to tungsten hexachloride is 2%, and then stirred for 10 minutes. After the stirring is completed, the mixed solution is transferred to a 100mL reaction kettle, and the solvent is carried out at a temperature of 200°C and a holding time of 12h. Thermal reaction, centrifuge the sample after the reaction kettle is naturally cooled, wash with ethanol 2-3 times, and then put it in a 60°C oven to dry for later use.

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Abstract

The invention provides a Ce-doped W18O49 nanowire photocatalyst preparation method, which comprises: mixing and stirring a certain amount of ethanol and tungsten hexachloride, adding cerium salt, conducting stirring to obtain a mixed solution, transferring the mixed solution to a polytetrafluoroethylene reaction kettle, carrying out a solvothermal reaction at a temperature of 150-240 DEG C for 3-24 h, after the reaction is finished, conducting centrifuging, conducting washing with ethanol, and conducting drying in a drying oven to obtain the Ce-doped W18O49 nanowire material. The Ce-doped W18O49 nanowire photocatalyst prepared by the method disclosed by the invention has relatively high photocatalytic nitrogen fixation activity and stability.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic nitrogen fixation materials, in particular to a Ce-doped W 18 o 49 nanowire photocatalysts, also involving the Ce-doped W 18 o 49 Nanowire photocatalyst preparation method. Background technique [0002] The increasing demand for energy and climate change due to the extensive use of fossil energy has stimulated people's strong interest in exploring renewable and clean energy. Due to the advantages of high energy density and environmental protection and pollution-free, hydrogen energy is considered to be the main energy in the future. Sustainable clean energy has been extensively studied. Among various nitrogen fixation processes, the simple and environmentally friendly photocatalytic nitrogen fixation technology has aroused people's strong interest, but photocatalytic nitrogen fixation technology largely depends on highly active, stable and cost-effective catalysts, so the development of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/30B01J35/10C01C1/04
CPCB01J23/30C01C1/0411B01J35/61B01J35/39Y02P20/52
Inventor 刘勇平庄杨吕慧丹李伟陈丹杨王子良
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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