Method for growing porous tin dioxide nano-tubes on electric conduction substrate

Abstract

The invention discloses a method for preparing one-dimensional porous tin dioxide nano-tubes on an electric conduction substrate based on an in-situ self-etching template mechanism, and belongs to the field of inorganic chemistry and material synthesis. The method comprises: washing an electric conduction glass, preparing a ZnO precursor solution, growing a ZnO / electric conduction glass, preparing a SnO2 precursor solution, and growing SnO2 nano-tubes. According to the present invention, the method is characterized in that the two-step template method for preparing the SnO2 nano-tubes through the in-situ etching based on the self-produced alkaline environment without strong acid / alkali is achieved, the experimental steps are simplified, the product size is uniform, the cost is low, and the advantages of energy saving and environment protection are provided; and the method has the simple operation and provides the new idea for the large batch preparation of the SnO2 nano-tubes, and the prepared tin oxide has the large specific surface area and has wide application prospects in the fields of photocatalysis, solar cells, and the like.

Description

technical field [0001] The invention relates to the technical field of nanomaterial synthesis, in particular to a method for preparing one-dimensional porous tin dioxide nanotubes on a conductive substrate based on an in-situ self-etching template mechanism. Background technique [0002] Tin dioxide is an n-type semiconductor material with a band gap of 3.6 eV and an exciton binding energy as high as 130 meV. It also has excellent electrical conductivity, good ultraviolet absorption performance and excellent chemical stability. It is used in optoelectronic devices, transparent conductive electrodes of solar cells, electrode materials of lithium ion batteries and biosensors and other fields. In the past few decades, there have been a large number of reports on the synthesis of tin dioxide, which can be roughly divided into gas-phase methods, liquid-phase methods and solid-phase methods, and tin dioxide with different structures and morphologies have been successfully prepared...

AI Technical Summary

Problems solved by technology

However, the preparation method of tin dioxide nanotubes is not very perfect, and it is still difficult to realize the simple one-step preparation of tin dioxide nanotubes. Among them, the template method is widely used, but most template methods need to add strong acid / Alkali is used as an etchant to remove the template to form a hollow structure. However, the acid-base etching step will not only increase the risk of the experiment and make the experimental steps more cumbersome, but also not conducive to the cleaning of the product, increase the preparation cost, and cause environmental pollution.

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