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Preparation method of Ag3PO4/ZnO composite powder

A composite powder, powder technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., to achieve excellent photocatalytic activity and easy operation.

Inactive Publication Date: 2018-09-04
QIDONG CHUANGLYU GREENING ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have improved the performance of ZnO photocatalysts to a certain extent, but there are still some limitations in terms of preparation methods, required equipment, cost and output control.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] a kind of Ag 3 PO 4 The preparation method of ZnO composite powder comprises the following steps: adding 25 parts of ZnO powder and 10 parts of polyvinylpyrrolidone to 65 parts of deionized water, ultrasonically dispersing for 15 minutes, and then adding 8 parts of Na 2 HPO 4 , sonicated to make it fully contact with ZnO to obtain a milky white suspension, and then 35 parts of AgNO with a concentration of 0.6mol / L were added dropwise to the suspension. 3 The solution was reacted in the dark for 3.5 hours after the dropwise addition was completed, then the stirring was stopped, ethanol was added and washed by centrifugation for 5 times, vacuum-dried at 55° C. and placed in the dark; each raw material was in parts by weight.

Embodiment 2

[0015] a kind of Ag 3 PO 4 The preparation method of ZnO composite powder comprises the following steps: adding 20 parts of ZnO powder and 5 parts of polyvinylpyrrolidone into 60 parts of deionized water, ultrasonically dispersing for 10 minutes, and then adding 7 parts of Na 2 HPO 4 , sonicate it to make it fully contact with ZnO to obtain a milky white suspension, and then add 30 parts of AgNO with a concentration of 0.6mol / L dropwise to the suspension 3 After the solution was added dropwise and reacted in the dark for 3 hours, the stirring was stopped, ethanol was added and washed by centrifugation for 4 times, vacuum-dried at 50° C. and placed in the dark; each raw material was in parts by weight.

Embodiment 3

[0017] a kind of Ag 3 PO 4 The preparation method of ZnO composite powder comprises the following steps: adding 30 parts of ZnO powder and 15 parts of polyvinylpyrrolidone into 70 parts of deionized water, ultrasonically dispersing for 20 minutes, and then adding 9 parts of Na 2 HPO 4 , sonicate it to make it fully contact with ZnO to obtain a milky white suspension, and then add 40 parts of AgNO with a concentration of 0.6mol / L dropwise to the suspension 3 The solution was reacted in the dark for 4 hours after the dropwise addition was completed, then the stirring was stopped, and ethanol was added to wash it by centrifugation for 6 times, then vacuum-dried at 60° C. and placed in the dark; each raw material was in parts by weight.

[0018] The method is simple, fast and easy to operate, and the prepared Ag 3 PO 4 / ZnO composite powder has excellent photocatalytic activity and can be prepared on a large scale.

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Abstract

The invention discloses a preparation method of Ag3PO4 / ZnO composite powder. The preparation method comprises the following steps: adding ZnO powder and polyvinylpyrrolidone into deionized water, performing ultrasonic dispersion for 10 to 20 min, then adding Na2HPO4, performing ultrasonic treatment to enable the Na2HPO4 to be in complete contact with the ZnO to obtain milky suspension, dropwise adding an AgNO3 solution into the suspension, performing light-resistant reaction for 3 to 4 h after dropwise adding, then stopping stirring, then adding ethanol for centrifugal washing for 4 to 6 times, drying the product in vacuum at 50 to 60 DEG C, and storing the product without light. The method is simple, convenient, quick and easy to operate; the prepared Ag3PO4 / ZnO composite powder is excellent in photocatalysis activity and can be prepared in large batches.

Description

technical field [0001] The present invention relates to an Ag 3 PO 4 / ZnO composite powder preparation method. Background technique [0002] Photocatalytic technology has the advantages of high efficiency, simplicity and no secondary pollution. In recent years, this technology has been widely used in the field of wastewater treatment. Obtaining high-performance photocatalysts is the key to this technology. Ag 3 PO 4 As a new type of semiconductor material, it has excellent visible light catalytic activity (the maximum absorption wavelength can reach 520nm), and has become a research hotspot for materials scholars. However, compared with other photocatalysts, Ag 3 PO 4 The cost of photocatalyst is relatively high, and its practical application is limited. ZnO is a commonly used photocatalyst with a band gap of about 3.26eV, high photostability and good photocatalytic activity, and is widely used. Compared to Ag 3 PO 4 Generally speaking, ZnO has a lower price and a...

Claims

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Application Information

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IPC IPC(8): B01J27/14
CPCB01J27/14B01J35/39
Inventor 不公告发明人
Owner QIDONG CHUANGLYU GREENING ENG CO LTD