Preparation method and application of CdIn2S4 nanoparticle/BiVO4 nanorod composite structure

A technology of nano-particles and composite structures, applied in chemical instruments and methods, water/sludge/sewage treatment, chemical/physical processes, etc., can solve undiscovered problems, achieve mild and easy-to-control reaction conditions, be easy to obtain, and improve The effect of electron transport ability

Active Publication Date: 2020-05-29
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] After checking, no information about CdIn has been found so far 2 S 4 Nanoparticles / BiVO 4 Preparation of Nanorod Composite Structure and Its Application to Degrade Tetracycline Hydrochloride (TC) and Oxytetracycline Hydrochloride (OTC) Related Reports

Method used

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  • Preparation method and application of CdIn2S4 nanoparticle/BiVO4 nanorod composite structure
  • Preparation method and application of CdIn2S4 nanoparticle/BiVO4 nanorod composite structure
  • Preparation method and application of CdIn2S4 nanoparticle/BiVO4 nanorod composite structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Weigh Bi(NO 3 ) 3 ·5H 2 O, PVP, NaVO 3 , the Bi(NO 3 ) 3 ·5H 2 Add O and PVP into 25mL ethanol, and ultrasonically disperse for 20min to obtain a uniform dispersion A;

[0037] Measure 15mL of water, add NaVO 3 , Ultrasound 10min to obtain dispersion B.

[0038] Slowly add B to A dropwise, stir for 30 minutes, transfer to a hydrothermal kettle for 16 hours at 140°C, wait for it to cool down to room temperature naturally, wash, dry and grind, put the ground sample into a tube furnace for calcination , where the heating rate is 3°C / min, the calcination temperature is 450°C, and the calcination time is 1h, and the BiVO 4 Nano stave.

[0039] (2) BiVO obtained in step (1) 4 0.5mmol of nanorods (mass 0.1620g) were dispersed in a mixed solvent of 15mL of methanol and 15mL of water, sonicated for 10min, stirred for 10min, and sonicated and stirred for 3 times to obtain uniformly dispersed BiVO 4 nanorod suspension;

[0040] 3.0772g CdIn 2 S 4 Nanoparticles di...

Embodiment 2

[0047] (1) Weigh Bi(NO 3 ) 3 ·5H 2 O, PVP, NaVO 3 , the Bi(NO 3 ) 3 ·5H 2 O. PVP was added to 50mL ethanol, and ultrasonically dispersed for 30min to obtain a uniform dispersion A;

[0048] Measure 30mL of water, add NaVO 3 , Ultrasound 15min to obtain dispersion B.

[0049] Slowly add B to A dropwise, after stirring for 30 minutes, transfer to a hydrothermal kettle to react at 160°C for 12 hours, wait for it to cool down to room temperature naturally, wash, dry and grind, and put the ground sample into a tube furnace for Calcination, where the heating rate is 3°C / min, the calcination temperature is 400°C, and the calcination time is 3h, the BiVO 4 Nano stave.

[0050] (2) BiVO obtained in step (1) 4 1.0mmol of nanorods (0.3240g in mass) were dispersed in a mixed solvent of 45mL of methanol and 30mL of water, sonicated for 10min, stirred for 10min, repeated sonication and agitated 5 times, and uniformly dispersed BiVO 4 nanorod suspension;

[0051] 2.9160g CdIn 2 ...

Embodiment 3

[0056] (1) Weigh Bi(NO 3 ) 3 ·5H 2 O, PVP, NaVO 3 , the Bi(NO 3 ) 3 ·5H 2 O. PVP was added to 75mL ethanol, and ultrasonically dispersed for 40 minutes to obtain a uniform dispersion A;

[0057] Measure 45mL of water, add NaVO 3 , Ultrasound 20min to obtain dispersion B.

[0058] Slowly add B to A dropwise, after stirring for 40 minutes, transfer to a hydrothermal kettle to react at 180°C for 8 hours, wait for it to cool down to room temperature naturally, wash, dry and grind, and put the ground sample into a tube furnace for Calcination, where the heating rate is 1.5°C / min, the calcination temperature is 480°C, and the calcination time is 2h, and the BiVO 4 Nano stave.

[0059] (2) BiVO obtained in step (1) 4 1.5mmol of nanorods (mass 0.4860g) were dispersed in a mixed solvent of 45mL of methanol and 45mL of water, ultrasonicated for 20min, stirred for 20min, repeated ultrasonicated and stirred for 6 times, and uniformly dispersed BiVO 4 nanorod suspension;

[006...

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Abstract

The invention belongs to the technical field of nano composite materials, and discloses a preparation method and application of a CdIn2S4 nano particle / BiVO4 nanorod composite structure. The method comprises the following steps: firstly, carrying out hydrothermal synthesis to obtain BiVO4 nanorods; preparing a suspension of the BiVO4 nanorods and CdIn2S4 nanoparticles, and finally, compounding theBiVO4 nanorods and the CdIn2S4 nanoparticles by adopting a hydrothermal method to prepare the CdIn2S4 nano particle / BiVO4 nanorod composite structure. The prepared composite structure can be appliedto catalytic degradation of tetracycline hydrochloride and oxytetracycline hydrochloride under visible light. The method has the advantages of abundant raw material sources, simple operation process and mild reaction conditions. BiVO4 nanorods and CdIn2S4 nanoparticles are compounded, and the characteristics of ultrasonic dispersion and hydrothermal method are fully utilized, so that the BiVO4 nanorods and the CdIn2S4 nanoparticles are in close contact, effective transmission and separation of photo-induced electrons are realized, and the electron transmission capacity in composite materials is improved; the light absorption range of the monomer photocatalyst is widened by utilizing the matched band gap of the two components, so that the overall photocatalytic activity is improved, and theCdIn2S4 nano particle / BiVO4 nanorod composite structure has important and wide application prospects in the aspect of environmental governance.

Description

technical field [0001] The present invention relates to a kind of CdIn 2 S 4 Nanoparticles / BiVO 4 The invention relates to a method for preparing a nano-rod composite structure, which belongs to the preparation of nano-composite materials and their application in the field of environmental protection. Background technique [0002] With the continuous improvement of my country's economic level and the rapid increase of industrialization, environmental issues have been widely concerned. As a means of reducing water pollution, sewage treatment is of great importance to its technological development. Due to the shortcomings of traditional sewage treatment methods such as low removal efficiency, high cost, and secondary pollution, the sewage treatment technology using photocatalytic oxidation has begun to receive widespread attention, and the corresponding semiconductor materials have also become a focus in the field of materials. Research hotspots. However, due to the charac...

Claims

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Application Information

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IPC IPC(8): B01J27/04B01J35/02C02F1/30C02F101/38
CPCB01J27/04C02F1/30C02F2101/38C02F2305/10B01J35/00B01J35/30B01J35/39
Inventor 王啟源刘笑龙韦运梅周二帅张申蒋银花张文莉
Owner JIANGSU UNIV
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