Preparation method for indium oxide sequential nano mesoporous materials doping with metal

A nano-mesoporous material, indium oxide technology, applied in chemical instruments and methods, nanotechnology for materials and surface science, nanotechnology, etc., can solve problems such as inappropriate doping of various metals, and achieve broadened uses and shapes Consistent, low-equipment-required results

Inactive Publication Date: 2012-08-22
CHINESE ACAD OF INSPECTION & QUARANTINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the synthesis of indium oxide nanowires by laser ablation method is a relatively commo

Method used

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  • Preparation method for indium oxide sequential nano mesoporous materials doping with metal
  • Preparation method for indium oxide sequential nano mesoporous materials doping with metal
  • Preparation method for indium oxide sequential nano mesoporous materials doping with metal

Examples

Experimental program
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Example Embodiment

[0034] Example 1: Preparation of Zn doped In 2 O 3 Ordered Nano Mesoporous Materials

[0035] 10g surfactant P123, 3g In(NO 3 ) 3 ·4.5H 2 O, 0.291g Zn(NO 3 ) 2 ·6H 2 O, 50g ethanol is stirred until it is completely dissolved, then add 25g TEOS, stir for 10min, add 3g 1mol / L HCl and stir for 10min, transfer to a porcelain boat and place in the air for 72h; spread 3mm thick paraffin on the surface of the sample, oil bath Heat at 60°C for 24h, wipe off the paraffin on the surface of the sample, and then roast in a muffle furnace (heating rate 3°C / min) at 500°C for 8h; add 40ml of 2mol / L NaOH solution to the sample and stir for 2h, then centrifuge to remove the upper layer Clear liquid, repeat the operation 3 times, then wash twice with water and ethanol, and dry in air to obtain In 2 O 3 Ordered nano mesoporous materials.

[0036] After structural characterization, the obtained Zn doped In 2 O 3 Ordered nanometer mesoporous materials have a pore diameter of 2.8nm and a specific surfac...

Example Embodiment

[0037] Example 2. Preparation of Cu-doped In 2 O 3 Ordered Nano Mesoporous Materials

[0038] 10g surfactant P123, 3g In(NO 3 ) 3 ·4.5H 2 O, 0.236gCu(NO 3 ) 2 ·3H 2 O, 50g ethanol is stirred until it is completely dissolved, then add 25g TEOS, stir for 10min, add 3g 1mol / L hydrochloric acid and stir for 10min, transfer to a porcelain boat and place in the air for 72h; spread 3mm thick paraffin on the surface of the sample, oil bath Heat at 50°C for 30h, wipe off the paraffin on the surface of the sample, and then roast at 500°C for 8h in a muffle furnace (heating rate 1°C / min); add 30ml of 3mol / L NaOH solution to the sample and stir for 2h, then centrifuge to remove the upper layer Clear liquid, repeat the operation 3 times, then wash twice with water and ethanol, and dry in the air to obtain In 2 O 3 Ordered nano mesoporous materials.

[0039] After structural characterization, the Cu doped In 2 O 3 The ordered nano mesoporous material has a regular pore diameter of 2.9nm and a sp...

Example Embodiment

[0040] Example 3: Preparation of Mg doped In 2 O 3 Ordered nano mesoporous materials

[0041] 10g surfactant P123, 3g In(NO 3 ) 3 ·4.5H 2 O, 0.25g Mg(NO 3 ) 2 ·6H 2 O, 50g ethanol is stirred until it is completely dissolved, then add 25g TEOS, stir for 10min, add 3g 1mol / L HCl and stir for 10min, transfer to a porcelain boat and place in the air for 72h; spread 3mm thick paraffin on the surface of the sample, oil bath Heat at 60°C for 24h, wipe off the paraffin on the surface of the sample, then calcinate at 500°C for 7h in a muffle furnace (heating rate 5°C / min); add 60ml of 1mol / L NaOH solution to the sample and stir for 2h, then centrifuge to remove the upper layer Clear liquid, repeat the operation 5 times, then wash twice with water and ethanol, and dry in the air to obtain In 2 O 3 Ordered nano mesoporous materials.

[0042] After structural characterization, the obtained Mg doped In 2 O 3 The ordered nano mesoporous material has a pore size of 4.1nm and regular pores, with a...

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Abstract

The invention provides a preparation method for indium oxide sequential nano mesoporous materials doping with metal, which comprises the following steps of: 1) the mass ratio of surfactants, nitrate of indium, ethanol, template tetraethoxysilane and hydrochloric acid in raw materials is (5-20):(1-6):50:(10-40):(0.07-0.15), the mass ratio of doping metal and indium is (0.02-0.15):1, and the doping metal is in the form of metal salt; mixing up salt with doping metal, surfactants, nitrate of indium and ethanol, stirring the mixture until the solid is totally dissolved; 2) adding tetraethoxysilane and hydrochloric acid and evenly mixing up; 3) removing dissolvent through standing and heating; 4) removing surfactants via roasting; and 5) removing the template via dissolving by aqueous alkali. According to the method provided by the invention, various different metal elements can be doped, the shape of synthesized In2O3 sequential nano mesoporous material is uniform, the operation is simple, the requirement on equipment is low, and the industrial practicality is realized.

Description

technical field [0001] The invention belongs to the field of main group metal oxides, in particular to a method for preparing a metal-doped indium oxide ordered nanometer mesoporous material. Background technique [0002] Indium oxide (In 2 o 3 ) is an important transparent conductor oxide with a large band gap (about 3.65eV, close to GaN), and is widely used in solar cells and solid-state optoelectronic devices, and has become one of the research hotspots of semiconductor oxides in recent years. one. with SnO 2 , ZnO, Fe 2 o 3 In contrast, indium oxide has the characteristics of wider band gap, smaller resistivity and higher catalytic activity. Its physical and chemical properties can be adjusted by doping different types of metal elements, and it can be applied to combustible gases and toxic gases. alarm, environmental gas monitoring and other fields. As a new gas-sensitive material, In 2 o 3 Mesoporous nanostructure materials have good application prospects. Ind...

Claims

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Application Information

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IPC IPC(8): C01G15/00B82Y30/00B82Y40/00
Inventor 杨海峰闫妍李俊芳王超
Owner CHINESE ACAD OF INSPECTION & QUARANTINE
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