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Preparation method of silver phosphate/resin compound

A technology of resin composites and silver phosphate, applied in chemical instruments and methods, chemical/physical processes, organic compounds/hydrides/coordination complex catalysts, etc., can solve the problem of difficult recovery and reuse of catalysts, secondary pollution, etc. problems, achieve the effect of facilitating recycling and reuse, reducing costs and investment, and avoiding secondary pollution

Inactive Publication Date: 2014-11-05
HEFEI UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing silver phosphate / resin composites, which solves the problems that catalysts in the prior art are difficult to recycle and reuse and secondary pollution

Method used

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  • Preparation method of silver phosphate/resin compound
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preparation example Construction

[0024] The present invention provides a kind of preparation method of silver phosphate / resin composite, specifically implement according to the following steps:

[0025] Step 1, the preparation of phosphate ion resin: according to mass volume ratio (g / mL) be 1: 25-1: 30 take the anion exchange resin that exchange capacity is 3.2mmol / g and the Na of 0.1mol / L 3 PO 4 solution; put the anion exchange resin in a stoppered Erlenmeyer flask, wash with distilled water 3 to 5 times, decant the washed distilled water, and then add 0.1mol / L Na 3 PO 4 solution, after shaking for 5-10 minutes, let it stand for 3-5 hours, and weigh the above 0.1mol / L Na 3 PO 4 Solution equal volume of 0.1mol / L Na 3 PO 4 solution, replacing 0.1mol / L Na 3 PO 4 solution; repeat the above operation three times, wash the ion exchange resin after the above treatment with distilled water for 3 to 5 times, filter, put it in a drying oven and dry it to obtain PO 4 3- resin.

[0026] Step 2, preparation of ...

Embodiment 1

[0032] Step 1, the preparation of phosphate ion resin: take the anion exchange resin of 2.5g (exchange capacity is 3.2mmol / g) and place in the Erlenmeyer flask with stopper of 250mL, wash 3~5 times with distilled water, decant after washing of distilled water, and then add 0.1mol / L of Na 3 PO 4Solution 64mL, shake for 5min, let stand for 3.5h, replace with new 0.1mol / L Na 3 PO 4 Solution 64mL, repeat the above operation three times, wash the ion exchange resin after the above treatment with distilled water for 3 to 5 times, filter, put it in a drying oven to dry, and then obtain PO 4 3- resin.

[0033] Step 2, preparation of silver phosphate / resin composite containing PVP: Weigh the above PO 4 3- Put 2.5g of anion resin in a beaker, measure 100mL of 0.1mol / L AgNO 3 solution, and add 10mg PVP, after dissolving, pour into the above beaker to soak PO 4 3- Anion resin for 45 minutes, rinse the treated sample with distilled water 3-5 times, pour off the remaining distilled...

Embodiment 2

[0035] Step 1, the preparation of phosphate ion resin: take the anion exchange resin of 2.5g (exchange capacity is 3.2mmol / g) and place in the Erlenmeyer flask with stopper of 250mL, wash 3~5 times with distilled water, decant after washing of distilled water, and then add 0.1mol / L of Na 3 PO 4 Solution 62.5mL, after shaking for 8min, let it stand for 3h, weigh the above 0.1mol / L Na 3 PO 4 Solution equal volume of 0.1mol / L Na 3 PO 4 solution, replacing 0.1mol / L Na 3 PO 4 solution; repeat the above operation three times, wash the ion exchange resin after the above treatment with distilled water for 3 to 5 times, filter, put it in a drying oven and dry it to obtain PO 4 3- resin.

[0036] Step 2, preparation of silver phosphate / resin composite containing PVP Weigh the above PO 4 3- Put 2.5g of anion resin in a beaker, measure 62.5mL of 0.1mol / L AgNO 3 solution, and add 62.5mg of PVP, stir and dissolve; pour the above mixture into the above beaker to soak PO 4 3- Res...

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Abstract

The invention discloses a preparation method of a silver phosphate / resin compound. The preparation method comprises the following steps of preparing phosphate ion resin (PO4<3-> resin), and preparing PVP-containing silver phosphate / resin compound. Through the preparation method, silver phosphate having good visible light catalytic oxidation performances is uniformly and stably compounded to the resin surface so that silver phosphate / resin photocatalyst particles having large particle sizes are obtained. The silver phosphate / resin compound can treat and purify waste water by natural light / sunshine catalytic oxidation, prevents secondary pollution may produced in waste water treatment and is convenient for photocatalyst recovery and reuse.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a preparation method of a silver phosphate / resin compound. Background technique [0002] The use of solar energy and the control of environmental pollution are major issues that human beings face and need to be solved urgently. Since someone discovered that TiO 2 As a photoanode, UV irradiation can decompose H 2 O is H 2 and O 2 Since nano-TiO 2 Semiconductor photocatalytic oxidation technology has received extensive attention in the field of environmental pollution control. However, the commonly used wide-bandgap photocatalytic material TiO 2 , because the quantization efficiency is low, about 4%, and the photocatalytic reaction can only be carried out under ultraviolet light, which greatly limits its utilization of sunlight, and because it needs to be irradiated with ultraviolet light, the operating cost of this technology is increased, and the use of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26C02F1/30
CPCY02W10/37
Inventor 崔康平许为义王郑朱越
Owner HEFEI UNIV OF TECH
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