Preparation method of three-dimensional thin film heterojunction photocatalyst based on cuprous oxide
A cuprous oxide and photocatalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as limitations and achieve low cost effects
Inactive Publication Date: 2015-09-30
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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However, these methods are usually grown and prepared under acidic or alkaline conditions, which requires the substrate material to have a certain ability to resist acid and alkali corrosion. If it is necessary to grow dendrites on other semiconductor materials that are susceptible to acid and alkali corrosion, such as ZnO and TiO 2 etc., the application of this method is limited
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Embodiment 1
[0020] Select ITO conductive glass or FTO conductive glass as the substrate to grow a layer of one-dimensional ZnO nanorod array film by hydrothermal method (Xinwei Zou et al, Materials Letters, 2013, 107: 269-272, and then use it as the working electrode for electrodeposition. To prepare a three-dimensional heterojunction thin film photocatalyst. The specific implementation steps are as follows:
[0021] 1) Prepare a dimethyl sulfoxide solution with a concentration of 0.75M copper nitrate as the electrolyte;
[0022] 2) Build a three-electrode deposition system, using a platinum electrode as the counter electrode, a saturated silver chloride electrode as the reference electrode, and a ZnO nanorod array film grown on ITO conductive glass as the working electrode;
[0023] 3) Electrodeposition was performed at 60° C., the applied potential was -0.4 V (relative to the saturated silver chloride electrode), and the deposition time was 30 minutes. Cu leaf-like crystals can be grow...
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Abstract
The invention belongs to the technical field of inorganic material preparation, and relates to a preparation technology and a preparation method of a three-dimensional heterojunction photocatalyst based on cuprous oxide. The thin film photocatalyst with a three-dimensional heterojunction is prepared by a three-electrode electro-deposition method by taking a zinc oxide or titanium dioxide one-dimensional nano-structure thin film growing on a conductive substrate as a working electrode, silver chloride or a saturated calomel electrode as a reference electrode and platinum as a counter electrode and a dimethyl sulfoxide solution of copper nitrate as electrolyte, wherein cuprous oxide is in tree leave type and nano particle type distribution and can form a good composite thin film heterostructure together with the zinc oxide or titanium dioxide one-dimensional nano-structure thin film. The photocatalyst disclosed by the invention is arranged in an aqueous solution to be treated, so that extremely high degrading capacity can be achieved on methyl orange under visible light.
Description
technical field [0001] The invention relates to a method for preparing a thin-film heterojunction photocatalyst, in particular to a method for preparing a three-dimensional thin-film heterojunction photocatalyst based on cuprous oxide, and belongs to the technical field of inorganic material preparation. technical background [0002] Cuprous oxide (Cu 2 O) As a p-type semiconductor material, its narrow band gap is about 2.1eV, and it has good solar light absorption performance, so it has good applications in the fields of photovoltaics, photocatalysis, photoelectrochemistry and gas sensors. prospect. The crystalline materials with leaf-like structure have good application prospects as catalysts and carrier materials due to their low density, large specific surface area and good surface permeability. [0003] In recent years, researchers have prepared cuprous oxide leaf-shaped film materials by electrodeposition. For example, Lingling Wu and Nageh K.Allam et al. have prepar...
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Login to View More IPC IPC(8): B01J23/72B01J23/80
Inventor 邹欣伟柴跃生田玉明
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY