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Preparation method of doped nano-zinc germanate and its catalytic reduction of carbon dioxide

A technology of nano-germanium and zinc acid, applied in the direction of carbon monoxide, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of reducing the band gap width, and achieve the effects of reducing recombination, reducing energy consumption, and low cost

Inactive Publication Date: 2020-05-01
荣吴迪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention uses hydrothermal method to synthesize doped nano-zinc germanate to adjust its energy band structure, reduce its bandgap width, and prepare doped nano-zinc germanate for photocatalytic reduction of CO 2 applications of which have not yet been reported

Method used

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  • Preparation method of doped nano-zinc germanate and its catalytic reduction of carbon dioxide
  • Preparation method of doped nano-zinc germanate and its catalytic reduction of carbon dioxide
  • Preparation method of doped nano-zinc germanate and its catalytic reduction of carbon dioxide

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Zinc acetate, copper acetate and germanium oxide are mixed in a molar ratio of 1:0.03:0.97, placed in a raw material storage tank and mixed evenly. Dissolve sodium dodecylbenzenesulfonate with a molar ratio of 1:1 to zinc acetate in a certain amount of water, stir and mix evenly in the storage tank. Transport the water dissolved in sodium dodecylbenzene sulfonate to the reactor by the material pump, and then transport the uniformly mixed zinc acetate, copper acetate and germanium oxide to the reactor, stir for 30 minutes, and then add sodium hydroxide The pH of the solution was adjusted to 11.0. The reaction was carried out at 100°C for 10 hours, and the product was washed with water until neutral. Perform vacuum drying.

Embodiment 2

[0038]Zinc acetate, copper acetate and germanium oxide are mixed in a molar ratio of 1:0.06:0.93, placed in a raw material storage tank and mixed evenly. Dissolve sodium dodecylbenzenesulfonate with a molar ratio of 1:1.2 to zinc acetate in a certain amount of water, stir and mix evenly in the storage tank. The water dissolved in sodium dodecylbenzenesulfonate is transported to the reactor by the material pump, and then the uniformly mixed zinc acetate, copper acetate and germanium oxide are transported to the reactor, and after stirring for 30 minutes, add sodium hydroxide The pH of the solution was adjusted to 9.0. The reaction was carried out at 180°C for 4 hours, and the product was washed with water until neutral. Perform vacuum drying.

Embodiment 3

[0040] Zinc acetate, copper acetate and germanium oxide are mixed in a molar ratio of 1:0.06:0.93, placed in a raw material storage tank and mixed evenly. Dissolve sodium dodecylbenzenesulfonate with a molar ratio of 1:1.4 to zinc acetate in a certain amount of water, stir and mix evenly in the storage tank. Pump the water dissolved in sodium dodecylbenzene sulfonate to the reaction kettle, and then transfer the uniformly mixed zinc acetate, copper acetate and germanium oxide to the reaction kettle, stir for 30 minutes, and then add sodium hydroxide solution Adjust the pH value to 10.5. The reaction was carried out at 120°C for 3.5 hours, and the product was washed with water until neutral. Perform vacuum drying.

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Abstract

The invention discloses a preparation method of doped nano-zinc germanate and its catalytic reduction of carbon dioxide. The method steps are as follows: (1) Solution 1 preparation: Mix zinc acetate, copper acetate and germanium oxide in a molar ratio and place them in a raw material storage tank in; (2) Preparation of solution two: Dissolve sodium dodecylbenzene sulfonate in a certain amount of water, stir and mix evenly in the storage tank; (3) Preparation of doped nano zinc germanate: Dissolve step 1) The prepared solution one and the solution two prepared in step 2) are transported into the reaction kettle according to the molar ratio, and sodium hydroxide solution is added to adjust the pH value at the same time; the reaction is carried out under the reaction conditions, and the product is washed with water until it is neutral. This invention does not require high-temperature synthesis of sodium germanate first, thereby reducing energy consumption; the temperature during the synthesis of doped copper-zinc germanate is low, requiring only 100°C-180°C and a short time of 4-10 hours, further reducing energy consumption.

Description

technical field [0001] The invention relates to the technical field of doping nano-zinc germanate, in particular to a new method for doping by simple hydrothermal synthesis, and further photocatalytically reducing carbon dioxide by doping zinc germanate. Background technique [0002] In today's society, the rapid development of industry has brought serious environmental pollution and energy shortages. How to effectively solve energy and environmental problems has become a worldwide topic. Excessive use of fossil fuels releases large amounts of CO 2 , resulting in CO in the atmosphere 2 The concentration of the main greenhouse gases continues to increase, which greatly hinders the sustainable development of human society. However, CO 2 It is also a potential carbon resource, so how to effectively use CO 2 has become a global hotspot, because the CO 2 Converting to clean energy can help to solve the problems of energy shortage and environmental degradation at the same tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/835C01B32/40
CPCC01B32/40B01J23/835B01J35/39
Inventor 荣吴迪赵捷
Owner 荣吴迪
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