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Preparation method of gradated stannic oxide octahedrons

A technology of tin dioxide and octahedron is applied in the field of preparation of tin dioxide nanomaterials, which can solve the problems of time-consuming and energy-consuming synthesis, and achieve the effects of low cost, abundant raw materials and simple process technology.

Inactive Publication Date: 2012-08-22
SUN YAT SEN UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Most of the reported tin dioxide are nanoparticles, and only a few literatures report the synthesis of tin dioxide octahedrons, all of which are prepared by hydrothermal reaction method based on surfactant, which is time-consuming and energy-consuming.

Method used

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  • Preparation method of gradated stannic oxide octahedrons
  • Preparation method of gradated stannic oxide octahedrons
  • Preparation method of gradated stannic oxide octahedrons

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Embodiment

[0030] Using stannous chloride, diethylene glycol, water, and diethanolamine as raw materials, graded tin dioxide octahedrons were synthesized by ultrasonic irradiation. Add 2.256g of stannous chloride to a 150ml beaker, add 80ml of diethylene glycol, stir for 10min, then add 20ml of water, stir for 10min, add 10ml of diethanolamine drop by drop, continue stirring for 10min, put the ultrasonic cell disruptor Put the probe into the beaker, adjust its power to 300W, set the ultrasonic mode to 8s, the amplitude to 50%, and the time to 10min. After the ultrasonic is finished, centrifuge to collect the white precipitate, and wash the obtained precipitate with water and alcohol for 3 minutes each. Second-rate. Dry at 60°C, and then heat-treat at 800°C in air for 3h to obtain hierarchical tin dioxide octahedrons composed of nanoparticles.

[0031] The dried white powder was directly used for powder diffraction test to determine its crystal form, and the results showed that the prepa...

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Abstract

The invention discloses a preparation method of gradated stannic oxide octahedrons, which comprises the following steps: (1) dissolving tin salts into mixed solvents of organic solvents and water; adding alkali for regulating the pH value, and carrying out ultrasonic reaction; (2) carrying out centrifugal separation on products, and obtaining Sn6O4(OH)4 octahedrons through water washing, alcohol washing and drying; and (3) carrying out heat treatment on the Sn6O4(OH)4 octahedrons to obtain the gradated stannic oxide octahedrons consisting of SnO2 nanometer particles. The method of the invention has the advantages of simplicity, convenience, high speed and good repeatability, and the synthesized gradated stannic oxide octahedrons can be widely used in the fields of catalysis, sensors, cosmetics, paint, solar batteries and the like.

Description

technical field [0001] The invention relates to the field of preparation of tin dioxide nanomaterials, in particular to a preparation method of graded tin dioxide octahedra. Background technique [0002] The preparation methods of tin dioxide mainly include vapor phase deposition method, hydrothermal synthesis method, sol-gel method, microemulsion method, template method and so on. Most of the reported tin dioxide is nanoparticles, and only a few literatures report the synthesis of tin dioxide octahedra, all of which are prepared by hydrothermal reaction method based on surfactant, which is time-consuming and energy-consuming. [0003] As an efficient and convenient synthesis method, sonochemistry has been widely used to prepare nanomaterials with various morphologies. The "acoustic cavitation" effect produced by ultrasonic irradiation will produce an instantaneous high temperature of 5000K and high pressure (20MPa) and a cooling rate exceeding 1010K / S in a very short perio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/02
Inventor 匡代彬王玉芬李建文苏成勇
Owner SUN YAT SEN UNIV