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Process for producing flower shaped indium hydroxide powder having high specific surface area

A high specific surface area, indium hydroxide technology, applied in chemical instruments and methods, inorganic chemistry, gallium/indium/thallium compounds, etc., to achieve good application prospects, high specific surface area, and size controllable effects

Inactive Publication Date: 2009-08-19
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no report on flower-like indium hydroxide assembled from nanosheets with high specific surface area and controllable morphology in the relevant literature.

Method used

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  • Process for producing flower shaped indium hydroxide powder having high specific surface area
  • Process for producing flower shaped indium hydroxide powder having high specific surface area
  • Process for producing flower shaped indium hydroxide powder having high specific surface area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Prepare 80 mL of an aqueous solution of indium chloride inorganic salt with a molar concentration of 0.01 mol / L, add 0.0008 mol of surfactant sodium lauryl sulfate, and then add 0.004 mol of urea as an alkali source. After ultrasonic vibration for several minutes, the mixture was put into a 100mL stainless steel reaction kettle lined with polytetrafluoroethylene, sealed and then hydrothermally reacted at a low temperature of 90°C for 12h. Take it out, cool it down to room temperature, wash the precipitate obtained by filtration with a mixed solution of ethanol and water with a volume ratio of 1:1, centrifuge to precipitate, and dry at 80°C to obtain flower-shaped indium hydroxide powder. The obtained powder BET is 38m 2 / g, XRD diffraction shows that it is mainly oriented along the [100] direction, and the amount of InOOH is 8%. Such as figure 1 shown.

Embodiment 2

[0023] Prepare 80 mL of indium chloride aqueous solution with a molar concentration of 0.1 mol / L, add 0.008 mol of sodium lauryl sulfate and 0.048 mol of urea. The reaction temperature is 95°C, the reaction time is 18h, and the BET can be obtained as 31m 2 / g, flower-shaped indium hydroxide powder containing 10% InOOH. All the other are with embodiment 1. Such as figure 2 shown.

Embodiment 3

[0025] Prepare 80 mL of indium nitrate aqueous solution with a molar concentration of 0.2 mol / L, add 0.032 mol of sodium lauryl sulfate and 0.112 mol of urea. The reaction temperature is 105°C, the reaction time is 24h, and the BET can be obtained as 23m 2 / g, flower-shaped indium hydroxide powder containing 11% InOOH. All the other are with embodiment 1. Such as image 3 shown.

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Abstract

The invention relates to a method for preparing flower indium hydroxide with high specific surface area, which belongs to the technical field of inorganic material preparing process. The method uses In water soluble salt as an indium source, urea as an alkali source and sodium dodecyl sulfate as a surfactant to prepare indium hydroxide powder by a hydro-thermal method, wherein the compositions react at a constant temperature for 12 to 24 hours under a low-temperature hydrothermal condition of between 90 and 105 DEG C; and precipitate is obtained through filtration after the reactant is cooled to room temperature, and is washed, centrifugally precipitated and dried to obtain the flower high specific surface area indium hydroxide assembled by nanometer flakes. The method has the advantages that the method prepares the flower indium hydroxide by the low-temperature hydro-thermal method, not only can make crystal sufficiently grow under unrestricted condition with advantages of high specific surface area, controllable appearance and size of the crystal, perfect crystal and the like, but also can obtain powder body with specific surface area of between 20 and 40 mg; and XRD diffraction indicates that a main crystal phase is In(OH) and grows with preferred orientation along (100) direction, and impurity phase is InOOH with content totally less than 12 percent. The system has excellent application prospect in microelectronics, photoelectricity, sensing devices, catalysts, alkaline cells and other fields.

Description

technical field [0001] The invention belongs to the technical field of inorganic material preparation technology, in particular to a preparation method of flower-shaped indium hydroxide with high specific surface area. Background technique [0002] Indium (In) is a group IIIA element and a low-melting metal with a tetragonal crystal structure. It is easy to synthesize III-V alloy semiconductors such as InN, InGaN, InP and InAs, and can be used to make optoelectronic devices such as light-emitting diodes (LEDs). In recent years, with the development of science and technology, indium and its compounds have been widely used in the manufacture of various alloys, the synthesis of semiconductor materials, the manufacture of infrared detectors and oscillators, as well as tumor radiation therapy and radionuclides in clinical medicine. Development and other industries. Indium hydroxide, as a compound of indium, can be used as a photodegradation catalyst for refractory organics such ...

Claims

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Application Information

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IPC IPC(8): C01G15/00
Inventor 陈曙光周杨夏清廖红卫陈颖李富进
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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