Preparation method of multi-shell core-shell micro/nano structure Cu2O
A technology of micro-nano structure and shell layer, applied in the field of semiconductors, can solve problems such as high cost, impurity in products, and cumbersome methods
Inactive Publication Date: 2015-03-11
ANHUI UNIVERSITY OF ARCHITECTURE
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[0004] Currently preparing Cu with core-shell structure (multi-shell structure) morphology 2 In the O process, templates or intermediate phases are used, and then related physical or chemical methods are used to remove these templates or intermediate phases, but these methods are relatively cumbersome and may lead to the presence of impurities in the product. In addition, these preparation methods may be harmful to the equipment. Higher requirements, resulting in higher costs
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[0022] 1. Put the pre-cleaned and activated substrate horizontally in 0.3mol / L copper sulfate solution according to the concentration ratio of 12:9:8, add the prepared trisodium citrate solution, add glucose solution after fully complexing, and stir evenly And set the volume to 50ml, adjust the pH value of the solution to 12.5, react at 80°C for 2 hours, take it out and clean it to get Cu 2 O sample (F).
[0023] 2. Put the pre-cleaned and activated substrate horizontally in the 0.3mol / L copper sulfate solution according to the concentration ratio of 12:9:8, add the prepared trisodium citrate solution, add the glucose solution after fully complexing, and stir evenly And set the volume to 50ml, adjust the pH value of the solution to 10.5, react at 80°C for 4 hours, take it out and clean it to get Cu 2 O sample (a).
[0024] 3. Put the pre-cleaned and activated substrate horizontally in 0.3mol / L copper sulfate solution according to the concentration ratio of 12:9:8, add the pr...
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The invention relates to a preparation method of multi-shell core-shell micro / nano structure Cu2O, belonging to the field of semiconductors. The existing method has the defects of higher facility request, complex process and difficulty in control of cost, and seriously influences the application range of the Cu2O sample. The preparation method is characterized by comprising the following steps: adding a trisodium citrate solution into a copper sulfate solution to implement sufficient complexation, and adding a glucose solution, wherein the mol concentration ratio of copper sulfate to trisodium citrate is 12:4-12:18, and the mol concentration ratio of copper sulfate to glucose is 12:2-12:22; regulating the pH value of the solution to 12.3-14.0; reacting at 50-95 DEG C for 1.5-6.0 hours; and after the reaction finishes, flushing, and drying to obtain the required product. Compared with other liquid-phase methods for preparing the core-shell (multi-shell) micro / nano structure Cu2O (template or intermediate phase method), the method (chemical bath deposition method using glucose as a reducer) simplifies the preparation technique, lowers the production cost, and avoids introducing impure phases due to incomplete elimination of the template or intermediate phase; and the prepared product is high-purity multi-shell core-shell micro / nano structure Cu2O.
Description
technical field [0001] A multi-shell core-shell micro-nanostructure Cu 2 The preparation method of O belongs to the semiconductor field. technical background [0002] Recently, solid materials with core-shell structure and hollow structure have received more and more attention because they have an important impact on the development of related fields of nanotechnology, such as energy storage systems, drug delivery vehicles, composite catalysts, The preparation and properties of photonic crystals, plasma generation, magnetic imaging agents, low κ-electrolytes, chemical and optical sensors, and protective functional materials have important influences. The current methods for preparing core-shell structures and hollow structures can be divided into hard template methods (such as polymers, ceramics, metal spheres, etc.), soft template methods (such as emulsion droplets, surfactants, and bubbles, etc.) , Ostwald ripening effect and chemical substance induction effect etc. phys...
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IPC IPC(8): C01G3/02B01J13/02
Inventor 徐海燕陈琛董金矿
Owner ANHUI UNIVERSITY OF ARCHITECTURE