Cu2OTiO2 nanotube array and preparation method thereof

A nanotube array and nanotube array technology, applied in the field of environmental science, can solve the problems of inability to make full use of natural sunlight, inability to form nanotube-like structures, and insufficient specific surface area to achieve excellent photocatalytic efficiency and improve photoelectric conversion efficiency. , the effect of mass production improvement
CN101851772AInactive Publication Date: 2010-10-06HUNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN UNIV
Publication Date
2010-10-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an environmental function nano-material-Cu2O / TiO2 nanotube array and a preparation method thereof. A TiO2 nanotube array is placed in 5mmol-20mmol of CuSO4 solution, and copper is electrodeposited on the TiO2 nanotube array in a standard three-electrode system by using pulse plating so as to obtain the Cu / TiO2 composite nanotube array; and after the deposition, the Cu / TiO2 composite nanotube array is electro-oxidized for certain time in an alkaline solution NaOH to obtain a TiO2 nanotube array modified by ultrafine Cu2O nanowires with the diameter of less than 5 nanometers. The nanaowires are intertwined and connected to from a network structure to be attached to the TiO2 nanotube array but do not fully block TiO2 nanotubes; the Cu2O / TiO2 nanotube array is very favorable for the transmission of photo-carriers, reduces the recombination probability of electron-hole pairs, effectively expands the absorption range of TiO2 in the visible region, reduces optical corrosion, improves photoelectric conversion efficiency, and shows good photocatalytic efficiency.
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Description

technical field

[0001] The invention belongs to the field of environmental science, and in particular relates to a novel and highly efficient environmental functional nanomaterial—Cu 2 O / TiO 2 Nanotube arrays and methods of making them. Background technique

[0002] Titanium dioxide nanotube arrays prepared by anodic oxidation have excellent characteristics such as large specific surface area and adjustable pore size. Its special nanotube-like structure has become a research hotspot in the scientific field of various countries. The electrolyte for preparing titanium dioxide nanotube arrays by anodic oxidation is usually an inorganic aqueous solution system. Since various ions migrate relatively fast in aqueous solution, the electrochemical anodic oxidation is also fast, and nanotube arrays can be formed in a relatively short time. However, the applied anodic oxidation voltage is generally only in the range of 10-25V, beyond this voltage range, the nanotube-like structure c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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