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Method for preparing supported type photocatalyst by ionic imprinting method

An ion imprinting method, photocatalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compounds/hydrides/coordination complex catalysts, etc., can solve problems such as loading uniformity and reusable impact

Inactive Publication Date: 2015-02-18
JIANGSU UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the simple load on TiO 2 Load uniformity and reuse will have some impact

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  • Method for preparing supported type photocatalyst by ionic imprinting method
  • Method for preparing supported type photocatalyst by ionic imprinting method
  • Method for preparing supported type photocatalyst by ionic imprinting method

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] A kind of ion imprinting method prepares the preparation method of supported photocatalyst, is characterized in that carrying out according to following steps: (1) preparation of hydroxyapatite powder: take by weighing 11.80g calcium nitrate and be dissolved in the beaker that a certain amount of deionized water is housed , add 3.4588g of phosphoric acid and place it on a magnetic stirrer to stir vigorously, stir at room temperature for 2 hours, and continuously add dilute ammonia water to control the pH value to 10; after the stirring is completed, let it stand and age for 24 hours, then use Buchner funnel to suction filter, Wash with absolute ethanol, dry at 100°C, place the dried product in a muffle furnace at 900°C for 2 hours and heat it for 1 hour, then cool to room temperature, take it out, and grind it to obtain hydroxyapatite powder. (2) Preparation of ...

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Abstract

The invention discloses a method for preparing a supported type photocatalyst by an ionic imprinting method. The preparation process comprises the following steps: (1) preparing hydroxyapatite powder; (2) preparing TiO2 sol; (3) coating the hydroxyapatite powder with the TiO2 sol to obtain TiO2 / hydroxyapatite; and (4) adding heavy metal ion chitosan liquid to coat TiO2 / hydroxyapatite to obtain the chitosan / TiO2 / hydroxyapatite composite photocatalyst. Degradable chitosan and environment-friendly hydroxyapatite are selected in the aspect of application of raw materials, secondary pollution cannot be caused, and the environment-friendly effect is achieved; and certain heavy metal ions are introduced into the supported type photocatalyst by the ionic imprinting method, and therefore, the sewage treatment effect is improved obviously.

Description

technical field [0001] The invention relates to the technical field of ion imprinting, in particular to a method for preparing a loaded photocatalyst by an ion imprinting method. Background technique [0002] The existing supported photocatalysts can be divided into inorganic carrier type and organic carrier type due to different carriers. The inorganic carrier includes silica gel, activated carbon, molecular sieve, zeolite, etc.; the organic carrier includes polyvinylpyrrolidone, polyethylene, polypropylene, ABS, etc. Regardless of the use of inorganic or organic supports, it is hoped that it will be beneficial to TiO 2 The improvement of catalytic performance does not cause new pollution to the environment. Find high-quality carriers and loading methods for different environmental problems or environmental governance requirements, improve the firmness and reusability of loaded photocatalysts, and research catalysts that can be recycled and fully utilize solar ener...

Claims

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Application Information

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IPC IPC(8): B01J31/38C02F1/28C02F1/42C02F1/30
CPCY02W10/37
Inventor 张洪杰李文凯
Owner JIANGSU UNIV OF SCI & TECH
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