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Preparation method of MnO2-supported TiO2 one-dimensional nano-material

A technology of nanomaterials and products, which is applied in the field of preparation of MnO2-loaded TiO2 one-dimensional nanomaterials, which can solve the problems of poor mechanical strength, low porosity, and many active components, and achieve cheap raw materials, simple processes, and control of structure and morphology stable effect

Inactive Publication Date: 2018-12-07
太仓萃励新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The available porosity of the loaded granular alumina and titanium oxide after vibration is not high, and more active components are required for the same volume; activated carbon has a porous structure and has a high catalytic efficiency after loading, but the disadvantage is that the mechanical strength is poor

Method used

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  • Preparation method of MnO2-supported TiO2 one-dimensional nano-material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] First, add 0.8mol sodium hydroxide and 6mmol nano-titanium dioxide into 80mL deionized water, stir evenly, then transfer the mixed solution into a hydrothermal reaction kettle with polytetrafluoroethylene, tighten the seal, and put it in a constant temperature oven at 180°C for static reaction 6 hours; then the reaction product was washed repeatedly with deionized water until the pH value was 8; then washed 4 times with 0.2 mol / L hydrochloric acid; after drying, metatitanic acid nanobelts were obtained. Ultrasonic dispersion of 0.3 g of metatitanic acid nanobelts into 100 mL of 0.04 mol / L MnCl 2 To the solution, add 100mL of 0.06mol / L ammonium persulfate aqueous solution dropwise, and continue to stir for 6 hours, alternately wash with deionized water and ethanol, filter with centrifuge precipitation after each washing, wash and dry to obtain manganese oxide material loaded metatitanic acid powder. After drying, the powder was calcined in a muffle furnace at 700°C for ...

Embodiment 2

[0020] First, add 0.8mol potassium hydroxide and 6mmol nano-titanium isopropoxide into 80mL deionized water, stir evenly, then transfer the mixed solution into a hydrothermal reaction kettle with polytetrafluoroethylene, tighten the seal, and put it in a constant temperature oven at 150°C Stand for reaction for 6 hours; then the reaction product was washed repeatedly with deionized water until the pH value was 8; then washed 4 times with 0.2 mol / L hydrochloric acid; and metatitanic acid nanobelts were obtained after drying. Ultrasonic dispersion of 0.3 g of metatitanic acid nanobelts into 100 mL of 0.04 mol / L MnSO 4 Add 100mL of 0.06mol / L potassium persulfate aqueous solution dropwise to the solution, and keep stirring for 12 hours, alternately wash with deionized water and ethanol, filter with centrifuge precipitation after each washing, wash and dry to obtain manganese oxide material loaded metatitanic acid powder. After drying, the powder was calcined in a muffle furnace a...

Embodiment 3

[0022] First, add 0.8mol potassium hydroxide and 6mmol nano-titanium dioxide into 80mL deionized water, stir evenly, then transfer the mixed solution into a hydrothermal reaction kettle with polytetrafluoroethylene, tighten the seal, and put it in a constant temperature oven at 180°C for static reaction 6 hours; then the reaction product was washed repeatedly with deionized water until the pH value was 8; then washed 4 times with 0.2 mol / L hydrochloric acid; after drying, metatitanic acid nanobelts were obtained. Ultrasonic dispersion of 0.3 g of metatitanic acid nanobelts into 100 mL of 0.04 mol / L MnCl 2 Add 100mL of 0.06mol / L sodium persulfate aqueous solution dropwise to the solution, and continue to stir for 8 hours, alternately wash with deionized water and ethanol, filter with suction filtration equipment after each washing, wash and dry to obtain manganese oxide material loaded metatitanic acid powder. After drying, the powder was calcined in a muffle furnace at 700°C ...

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Abstract

The invention belongs to the technical field of material chemistry and relates to a preparation method of a MnO2-supported TiO2 one-dimensional nano-material. The preparation method comprises: (1) adding a strong base and nano-titanium dioxide or a titanium-containing organic precursor into deionized water, uniformly stirring the solution, and then transferring the mixed solution into a hydrothermal reactor with polytetrafluoroethylene, tightening to seal the reactor, putting the reactor into a constant temperature oven at 150-180 DEG C and carrying out standing for a reaction for 6-12h, (2) repeatedly washing the reaction product through deionized water until the pH is 7-8 and then washing the product with 0.1 to 0.5 mol / L of hydrochloric acid 3 to 5 times, (3) ultrasonically dispersing the washed product into an aqueous solution of a divalent manganese salt, adding a persulfate aqueous solution or hydrogen peroxide solution into the mixed solution drop by drop and continuously stirring the mixed solution, (4) separating and washing the product of the step (3), and then drying the product through an oven at 50-70 DEG C, and (5) after drying, calcining the powder in a muffle furnace at 450-700 DEG C for 3-8 hours.

Description

technical field [0001] The invention belongs to the technical field of material chemistry and relates to a MnO 2 loaded TiO 2 Preparation methods of one-dimensional nanomaterials. Background technique [0002] Manganese oxide is an important industrial catalyst material, which has important applications in fuel cells and other fields. Usually, the catalyst active components are loaded on micron or nanometer alumina, titanium oxide, activated carbon and other carriers to improve utilization efficiency. The available porosity of the loaded granular alumina and titanium oxide after vibration is not high, and more active components are required for the same volume; activated carbon has a porous structure and has a high catalytic efficiency after loading, but the disadvantage is that the mechanical strength is poor. [0003] Titanium dioxide nanobelt structure has a high specific surface area, and manganese oxide catalyst modified on titanium dioxide nanobelts can effectively i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J35/02B01J35/00
CPCB01J23/34B01J35/39B01J35/33B01J35/40
Inventor 陆嘉君
Owner 太仓萃励新能源科技有限公司
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