Preparation method for tin-based oxide nanorods

Abstract

A preparation method for tin-based oxide nanorods includes the following steps of weighing one of rare earth nitrate, rare earth oxide, rare earth ocyhydrate or rare earth carbonate according to stoichiometric ratio of metallic elements in Sn1-xREx02-delta, weighing one of rare earth nitrate, rare earth oxide, rare earth ocyhydrate or rare earth carbonate to prepare nitric acid rare earth solution, then weighing SnC14.5H2O to be dissolved to the prepared nitric acid rare earth solution and obtaining mixed solution, then respectively weighing an appropriate amount of organic fuels, a combustion improver of ammonium nitrate and soluble chloride to be dissolved to the mixed solution; after heating the mixed solution to concentrate the solution to a state of being approximately sticky, heating in microwave mode, and initiating self-spreading burning; roasting the self-spreading burning product in the air, after cooling, washing in ultrasonic mode, filtering, removing constitution ions of the chloride, and drying at 80 DEG C. The preparation method shortens technological process, lowers preparation cost, and is simple in synthesis equipment, low in post-treatment temperature and short in time, and easy for achieving industrialized preparation.

Description

technical field [0001] The invention belongs to the technical field of materials and relates to a preparation method of nanometer materials. Background technique [0002] One-dimensional nanomaterials such as nanorods, nanotubes, and nanowires have become a research hotspot and one of the most important research fronts in the fields of physics, chemistry, and materials in recent years. Due to the reduction of material scale and dimension, it presents novel and unique electrical, magnetic, optical, thermal and other physical and chemical properties different from traditional materials, so it has a wide range of applications in optoelectronic materials, sensors, catalysts, composite materials, etc. prospect. Tin dioxide is a typical n-type semiconductor material, its E g =3.6eV (300K), it can be used in the fields of conductive materials, thin film resistors and optoelectronic devices. However, pure SnO 2 It is difficult to meet the requirements of optical, electrical and ...

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Problems solved by technology

Congkang Xu et al. (Large-scale synthesis of rutile SnO 2 nanorods, Solid State Commun. 2003, 125, 301) and Yingkai Liu et al [Improved molten salt synthesis (MSS) for SnO 2 nanorods and nanotwins, Mater. Chem. Physics 2008, 112, 381] The preparation methods related to molten salt all use expensive surfactants without exception, and the preparation process is complicated or there are special requirements for precursors and salts The mixing is uneven, the calcination temperature must be above the melting point of the salt, and the energy consumption is large

At present, there is no simple, fast, low-cost, low-energy method for preparing tin-based nanorods

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