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In-situ self-assembly preparation method of ZnTPP (zinc tetraphenylporphyrin)/ZnO composite membrane nanomaterial

A technology of zinc tetraphenylporphyrin and tetraphenylporphyrin, applied in the field of in-situ self-assembly preparation of zinc tetraphenylporphyrin/zinc oxide composite film nanomaterials, to achieve improved quantum yield, high selectivity and High-efficiency photocatalysis, realizing the effect of visible light response

Active Publication Date: 2017-05-31
FUZHOU UNIV
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  • Application Information

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Problems solved by technology

Semiconductor oxide photocatalysts are generally considered to be non-selective in the treatment of pollutants. According to the free radical mechanism of the photocatalytic reaction, that is, the substrate to be degraded is rapidly attacked by strong oxidant hydroxyl radicals, and there is no selectivity.

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  • In-situ self-assembly preparation method of ZnTPP (zinc tetraphenylporphyrin)/ZnO composite membrane nanomaterial
  • In-situ self-assembly preparation method of ZnTPP (zinc tetraphenylporphyrin)/ZnO composite membrane nanomaterial
  • In-situ self-assembly preparation method of ZnTPP (zinc tetraphenylporphyrin)/ZnO composite membrane nanomaterial

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Embodiment

[0033] A preparation method for in-situ self-assembly of tetraphenylporphyrin zinc / zinc oxide composite film nanomaterials, the specific steps of which are:

[0034] (1) The ITO conductive glass is ultrasonically cleaned with cleaning agent, acetone, ethanol and deionized water respectively, with an interval of 10 minutes each time, and then dried in an oven at 80°C for later use;

[0035] (2) Weigh 0.5g of PVP and dissolve it in 30mL of water, then add 0.2g of glycine, 0.2g of zinc acetate and 0.2g of Na 2 SO 4 , and stirred evenly to form solution A, in addition, weighed 0.19g ammonium carbonate and dissolved in 20mL water to form solution B; then, under stirring conditions, slowly added solution B dropwise to solution A to form a mixed solution; then washed Put the clean ITO into the polytetrafluoroethylene reaction kettle, then pour the above mixed solution into the reaction kettle, then place the reaction kettle in a box-type resistance furnace, react at 180°C for 3 hour...

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Abstract

The invention discloses an in-situ self-assembly preparation method of a ZnTPP (zinc tetraphenylporphyrin) / ZnO composite membrane nanomaterial. The method comprises the following steps: 1) synthesizing a nest-like ZnO membrane nanomaterial on ITO conducting glass; 2) synthesizing H2TPP (tetraphenylporphyrin); 3) dissolving H2TPP in a trichloromethane solvent; 4) impregnating the ZnO membrane nanomaterial attached to the ITO conducting glass in the H2TPP solution to realize uniform spin coating adhesion immediately; 5) calcining the ITO conducting glass in a tube furnace. During preparation, ZnTPP is formed through in-situ self-assembly on ZnO surface, the obtained organic matter and inorganic matter composite is clean in interface and good in chemical bonding and stability, the visible light absorption spectrum of the composite is broadened, separation efficiency of photogenerated charges is increased, photocatalytic degradation efficiency is increased substantially, and the composite shows hydrophobicity and obvious organic dye selectivity.

Description

technical field [0001] The invention belongs to the field of preparation of nanometer functional materials, and in particular relates to an in-situ self-assembly preparation method of tetraphenylporphyrin zinc / zinc oxide composite film nanometer material. Background technique [0002] Among many environmental water pollution control technologies, photocatalytic oxidation technology has become an environmental water pollution control technology with broad application prospects due to its unique properties such as deep reaction at room temperature and simple catalytic conditions. At present, the nano-semiconductor ZnO is mainly used as a photocatalyst. Due to the use of nanotechnology, ZnO has a small size, a large specific surface area, and a large number of dangling bonds on the surface, and it is fully in contact with water pollutants, which not only improves the catalytic rate, but also reduces the reaction temperature. , and the method is simple and easy to implement. Ho...

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Application Information

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IPC IPC(8): B01J31/22B01J31/26C02F1/30C02F101/34C02F101/38
CPCC02F1/30B01J31/183B01J31/26C02F2305/10C02F2101/34C02F2101/345C02F2101/38C02F2101/308B01J2531/26B01J2531/025B01J35/39
Inventor 潘海波黄慧涵张俊贤沈水发姜蓉
Owner FUZHOU UNIV
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