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Preparation method of Ag3PO4 nanowire/AAO nano semiconductor compound photocatalytic material

A nano-semiconductor and composite photocatalysis technology, applied in the field of photocatalysis, can solve the problems of difficult recovery of photocatalysts, easy aggregation of catalysts, migration of photocatalysts, etc., and achieve good size uniformity, increase of surface active sites, and good repeatability Effect

Active Publication Date: 2018-03-06
JIANGSU UNIV OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the technology of photocatalytic degradation of organic polluted wastewater generally uses powdered photocatalysts. The catalysts are dispersed in the degraded wastewater in a suspended state, which makes it difficult to recover the photocatalysts. The photocatalysts migrate into the water body, causing secondary pollution of the water. Low utilization rate of light energy

Method used

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  • Preparation method of Ag3PO4 nanowire/AAO nano semiconductor compound photocatalytic material
  • Preparation method of Ag3PO4 nanowire/AAO nano semiconductor compound photocatalytic material

Examples

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Embodiment 1

[0027] Under stirring conditions, 20mL 0.05mol / L phosphoethanol solution (the concentration of PVP is 0.02mol / L) was dropped into 30mL of 0.025mol / L AgNO cyclohexane solution containing AAO (2cm×4cm) (the concentration of oleylamine was 0.002mol / L), after reacting at room temperature for 60min, let it stand for 60min, take it out, wash with water, and dry to obtain the Ag3PO4 nanowire / AAO nanosemiconductor composite photocatalytic material, and its SEM spectrum and XRD diffraction spectrum are respectively as follows figure 1 and figure 2 shown.

[0028] In order to test the Ag prepared in this example 3 PO 4 The photocatalytic performance of nanowires / AAO, and its photocatalytic degradation of rhodamine: the photocatalytic reaction was carried out in a 20mL cylindrical glass reactor, with a 300W xenon lamp as the light source, the light source was 20cm away from the liquid surface, and the spot area was 1cm 2 Add magnetic stirring under the reaction vessel to fully mix th...

Embodiment 2

[0030] Under the condition of stirring, 20mL of 0.5mol / L phosphoric acid aqueous solution (the concentration of PVP is 0.025mol / L) was dropped into 30mL of 0.05mol / L AgNO containing AAO (2cm×4cm). 3 In cyclohexane solution (the concentration of oleylamine is 0.001mol / L), react at room temperature for 30 minutes, let it stand for 30 minutes, take it out, wash it with water, and dry it to obtain Ag 3 PO 4 Nanowire / AAO nanosemiconductor composite photocatalytic material. Referring to the test method in Example 1 to detect the photocatalytic performance, the photocatalytic degradation rate of rhodamine reached 80.56%.

Embodiment 3

[0032] Under the condition of stirring, 25mL of 0.5mol / L trisodium phosphate ethanol solution (the concentration of PVP is 0.015mol / L) was dropped into 10mL of 0.005mol / L AgNO containing AAO (1cm×2cm). 3 In cyclohexane solution (the concentration of oleylamine is 0.005mol / L), react at room temperature for 45 minutes, let it stand for 30 minutes, take it out, wash it with water, and dry it to obtain Ag 3 PO 4 Nanowire / AAO nanosemiconductor composite photocatalytic material. Referring to the test method in Example 1 to detect the photocatalytic performance, the photocatalytic degradation rate of rhodamine reached 86.78%.

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Abstract

The invention relates to the field of nano semiconductor photocatalytic materials and aims to provide an Ag3PO4 nanowire / AAO nano semiconductor compound photocatalytic material and a preparation method thereof. The preparation method comprises the following steps: adding an AAO template into a container; and then adding an Ag<+> solution and a PO4<3-> solution into the container. The prepared Ag3PO4 / AAO has a unique shape and a good photocatalytic performance, and is simple in preparation process, short in reaction time, environment-friendly in process, good in repeatability and easy for industrial production.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis, in particular to an Ag 3 PO 4 A method for preparing a nanowire / AAO nanosemiconductor composite photocatalytic material. Background technique [0002] With the rapid development of productivity, environmental problems are becoming more and more serious. Semiconductor photocatalysts can directly degrade organic polluted wastewater into harmless CO 2 and H 2 O and much attention. Among many semiconductor catalysts, TiO 2 Due to its non-toxicity, low cost, high stability and excellent photocatalytic ability, it has become the most researched and most promising semiconductor material. However, due to its large energy gap (such as anatase TiO 2 3.2eV), can only use the ultraviolet (UV) part that accounts for 3-4% of sunlight, and the quantum efficiency is low, thus limiting the TiO 2 Applications. Therefore, methods such as doping, metal deposition, and preparation of composite materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/18C02F1/30
Inventor 张春勇郑德峰邵晓强陆芳程洁红秦恒飞文颖频舒莉刘维桥梁国斌汪斌周月郑纯智张国华
Owner JIANGSU UNIV OF TECH