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Process for preparing uniform dense orientational poly metal oxide nano film

A nano-film, multi-metal technology, applied in metal material coating process, liquid chemical plating, coating and other directions, can solve the problems of complex device, high substrate requirements, high operating cost, easy operation and equipment requirements. Simple, targeted effects

Inactive Publication Date: 2007-04-11
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of the above-mentioned preparation methods have high requirements on the substrate, such as lattice induced growth on a single crystal substrate with a specific crystal plane, or the substrate must be pretreated and activated before it can be used; and the removal of sol- Except for the gel method, there are disadvantages of complex devices and high operating costs, which are limited in research and application.

Method used

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  • Process for preparing uniform dense orientational poly metal oxide nano film
  • Process for preparing uniform dense orientational poly metal oxide nano film
  • Process for preparing uniform dense orientational poly metal oxide nano film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Step A: take by weighing 38.68g Ni(NO 3 ) 2 ·6H 2 O and 24.99g Al(NO 3 ) 3 9H 2 O dissolved in 250mL to remove CO 2 In the water, prepare a mixed salt solution, another 15.20g NaOH is dissolved in 250mL to remove CO 2 At room temperature, quickly pour the alkali solution and the mixed salt solution into the fully back-mixed rotary liquid film reactor to react for 1min, and the obtained slurry was heated at 100°C under N 2 Crystallize under protection for 8 hours, centrifuge, wash to neutral, weigh a certain amount of product to prepare 10mL aqueous solution with a concentration of 4.3wt%, stir evenly at room temperature, pour into a petri dish with a diameter of 90mm, and store at 20°C Drying for 4 days, you can get NiAl-NO 3 LDHs precursor, its Ni 2+ / Al 3+ =2.

[0022] Step B: NiAl-NO obtained in step A 3 The LDHs precursor was placed in a muffle furnace at 900 °C for 2 hours to obtain NiAl-MMO 900 nano film.

[0023]The resulting NiAl-MMO 900 The XRD sp...

Embodiment 2

[0025] Step A: take by weighing 38.68g Ni(NO 3 ) 2 ·6H 2 O and 26.91g Fe(NO 3 ) 3 9H 2 O dissolved in 250mL to remove CO 2 In the water, prepare a mixed salt solution, another 15.20g NaOH is dissolved in 250mL to remove CO 2 At room temperature, quickly pour the alkali solution and the mixed salt solution into the fully back-mixed rotary liquid film reactor to react for 1min, and the obtained slurry was heated at 100°C under N 2 Crystallize under protection for 8 hours, centrifuge, wash to neutral, weigh a certain amount of product to prepare 10mL aqueous solution with a concentration of 5wt%, stir evenly at room temperature, pour it into a petri dish with a diameter of 90mm, and store it at 40°C Dry for 8 hours to get NiFe-NO 3 LDHs precursor, its Ni 2+ / Fe 3+ =2.

[0026] Step B: NiFe-NO obtained in step A 3 The LDHs precursor was placed in a muffle furnace at 1000 °C for 24 hours to obtain NiFe-MMO 1000 nano film.

[0027] Via NiFe-MMO 1000 The XRD and SEM cha...

Embodiment 3

[0029] Step A: take by weighing 28.56g Zn(NO 3 ) 2 ·6H 2 O and 18.01g Al(NO 3 ) 3 9H 2 O dissolved in 150mL to remove CO 2 In the water, it is prepared as a mixed salt solution, and another 9.12g NaOH is dissolved in 150mL to remove CO 2 At room temperature, quickly pour the alkali solution and the mixed salt solution into the fully back-mixed rotary liquid film reactor to react for 1min, and the obtained slurry was heated at 100°C under N 2 Crystallize under protection for 8 hours, centrifuge, wash to neutral, weigh a certain amount of product to prepare 10mL aqueous solution with a concentration of 3.6wt%, stir evenly at room temperature, pour into a petri dish with a diameter of 90mm, and store at 50°C Dry for 6 hours to get ZnAl-NO 3 LDHs precursor, its Zn 2+ / Al 3+ =2.

[0030] Step B: the ZnAl-NO obtained in step A 3 The LDHs precursor was placed in a muffle furnace and calcined at 500 °C for 15 min to obtain ZnAl-MMO 500 nano film.

[0031] by ZnAl-MMO 500...

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Abstract

The process of preparing uniform dense oriented nanometer multiple metal oxide (MMO) film belongs to the field of nanometer MMO film preparing technology. Oriented composite metal hydroxide precursor is made to produce solid phase reaction at proper temperature so that its crystal structure is converted toward specific crystal form and homogeneous dense oriented nanometer MMO film is formed. The present invention is superior in that the prepared nanometer MMO film is dense, homogeneous, oriented, continuous and great in area, and may have different composition and structure obtained through regulating the metal element variety and composition of the precursor, and that the present invention is simple and without inducing growth of monocrystal chip.

Description

[0001] Field [0002] The invention belongs to the technical field of multi-element metal oxide nano-films, and in particular relates to a method for preparing uniform and dense oriented multi-element metal oxide nano-films. Background technique [0003] Multi-element metal oxide (Mixed Metal Oxides, abbreviated as MMO) nano-thin film is one of the main directions of thin film research at present, and has been widely used in the fields of semiconductor materials, dielectric materials, electrode materials, catalysts and sensors. The multi-component MMO nano-film organically composites a variety of metal oxides, optimizes the properties of the metal oxides of each component, and may have new properties that the metal oxides of each component do not have, thereby further expanding its application. research object of interest. [0004] Ordered nano-film refers to a nano-film that is constructed of nanoparticles, nanopores or molecules and has a certain arrangement in the long-ran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G1/02
CPCC23C18/1216
Inventor 段雪王连英刘淼李仓
Owner BEIJING UNIV OF CHEM TECH
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