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Ultrasonic chemical in-situ preparation method for phthalocyanine-sensitized vanadate nano-powder

A technology of phthalocyanine-sensitized bismuth vanadate and ultrasonic chemistry, which is applied in chemical instruments and methods, catalyst activation/preparation, organic compound/hydride/coordination complex catalysts, etc., can solve the problem of inability to provide uniform bismuth vanadate Nano-powder, sensitization modification, poor utilization effect, unsatisfactory photocatalytic performance, etc., to achieve the effect of increasing photocatalytic performance, increasing light absorption and photon efficiency, and inhibiting recombination

Inactive Publication Date: 2011-10-19
海门嘉濠建材贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bismuth vanadate prepared by the above two methods cannot provide bismuth vanadate nanopowder with good uniformity. Chemical modification utilization effect is not good

Method used

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  • Ultrasonic chemical in-situ preparation method for phthalocyanine-sensitized vanadate nano-powder

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Experimental program
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Effect test

Embodiment 1

[0029] 10mmol Bi(NO 3 ) 3 ·5H 2 O was dissolved in 100ml of 2mol / L nitric acid solution, and 10mmol of NH 4 VO 3 Dissolve in 100ml of distilled water; then add 20mg of sulfonated cobalt phthalocyanine (CoPcTs) to Bi(NO 3 ) 3 In the solution, add an appropriate amount of NaOH solution, control its pH value to 1, adjust the temperature of the mixed solution to 50°C, and keep the temperature for 4h; finally add NH 4 VO 3 The aqueous solution was slowly added dropwise into the Bi(NO 3 ) 3 solution, and the solution was ultrasonicated for 2 hours at the same time, the ultrasonic frequency and power were 40KHz and 150W, respectively, centrifuged, washed, and dried in vacuum at 60°C for 12 hours to prepare a cobalt phthalocyanine-sensitized bismuth vanadate photocatalyst powder sample.

[0030] In the cobalt phthalocyanine sensitized bismuth vanadate nanometer powder, the sensitizer accounts for about 0.6% of the total mass of the powder. Using JADE5 software analysis, the r...

Embodiment 2

[0034] 10mmol Bi(OH) 3 Dissolve in 50ml of 5mol / L hydrochloric acid solution, dissolve 10mmol of bis(1,1-cyclobutanedicarboxylic acid)vanadyl in 50ml of distilled water; then add 100mg of sulfonated copper phthalocyanine (CuPcTs) to Bi(OH) 3 In the solution, add an appropriate amount of ammonia water, adjust the pH value of the solution to 4, adjust the temperature of the mixed solution to 95 ° C, and keep the temperature for 2 hours; finally, slowly add the bis(1,1-cyclobutanedicarboxylic acid) vanadyl solution dropwise To Bi(OH) 3 solution, and the solution was ultrasonicated for 4 hours at the same time, the ultrasonic frequency and power were 40KHz and 150W, respectively, centrifuged, washed, and dried in vacuum at 100°C for 6 hours to prepare copper phthalocyanine sensitized BiVO 4 Photocatalyst powder samples.

[0035] In this copper phthalocyanine sensitized BiVO 4 In the nanometer powder, the sensitizer accounts for about 3% of the total mass of the powder. The pho...

Embodiment 3

[0037] Dissolve 30mmol of bismuth subsalicylate in 100ml of a mixed acid solution of 3mol / L hydrochloric acid and nitric acid, dissolve 30mmol of sodium metavanadate in 100ml of distilled water; then add 80mg of sulfonated iron phthalocyanine (FePcTs) to the above basic formula Add an appropriate amount of triethanolamine to the bismuth salicylate solution, control its pH value to 2, adjust the temperature of the mixed solution to 60°C, and keep the temperature for 3 hours; finally, slowly add the aqueous solution of sodium metavanadate into the alkaline water Bismuth sylate solution was ultrasonicated for 3 hours at the same time, the ultrasonic frequency and power were 40KHz and 150W respectively, centrifuged, washed, and dried in vacuum at 90°C for 8 hours to prepare iron phthalocyanine sensitized BiVO 4 Photocatalyst powder samples.

[0038] In this phthalocyanine iron sensitized BiVO 4 In the nanometer powder, the sensitizer accounts for about 0.8% of the total mass of t...

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Abstract

The invention belongs to the technical field of photocatalysts, in particular to an ultrasonic chemical in-situ preparation method for phthalocyanine-sensitized vanadate nano-powder. The method comprises the following steps specifically: dissolving a bismuth-containing reactant A in 2 to 5 mol / L acidic diluting agent to obtain a reaction liquid A; dissolving a vanadate-containing reactant B in distilled water to obtain a reaction liquid B of which the concentration is the same as that of the reaction liquid A; adding phthalocyanine serving as a sensibilizer into the reaction liquid A; adjusting the pH value of the solution to be between 1 and 4 by using an alkaline diluting agent; adjusting the temperature of the reaction liquid A to be between 50 and 95 DEG C; holding the temperature for2 to 4 hours; adding the reaction liquid B into the reaction liquid A dropwise; and performing an ultrasonic reaction on the mixed liquid for 2 to 4 hours to obtain a product. The bismuth vanadate photocatalyst prepared by the method has the characteristics of good uniformity and higher photocatalytic activity.

Description

technical field [0001] The invention belongs to the technical field of photocatalysts, and in particular relates to a sonochemical in-situ preparation method of phthalocyanine-sensitized bismuth vanadate nanopowder. Background technique [0002] At present, the preparation of phthalocyanine-sensitized nano-powder mainly adopts the direct composite method, that is, the phthalocyanine and the prepared nano-powder are made directly by chemical reaction method, physical blending method, vacuum sublimation deposition method and impregnation adsorption method. produce a physical or chemical bond. The phthalocyanine-sensitized nano-powder system prepared by the above method has poor uniformity, and it is difficult to accurately control the doping concentration and microstructure, and the prospect of industrial application is worrying. [0003] The invention with application number 200510049270.2 dated October 12, 2005 discloses an ultrasonic in-situ preparation method of phthalocy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/36B01J37/34
Inventor 陈海锋唐培松潘国祥曹枫
Owner 海门嘉濠建材贸易有限公司
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