Check patentability & draft patents in minutes with Patsnap Eureka AI!

Preparation of CdSQDs@CdIn2S4/CdWO4 material

A CH4N2S, quality technology, applied in the chemical industry, can solve problems such as restricting applications, and achieve the effects of enhancing absorption, enhancing charge transfer efficiency, and improving photostability

Inactive Publication Date: 2018-12-28
QIQIHAR UNIVERSITY
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many semiconductor photocatalysts have been applied in the photolysis of water to produce hydrogen, but their respective shortcomings limit their practical application.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation of CdSQDs@CdIn2S4/CdWO4 material
  • Preparation of CdSQDs@CdIn2S4/CdWO4 material
  • Preparation of CdSQDs@CdIn2S4/CdWO4 material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] Weighed 99.5% cadmium acetate (Cd(CH 3 COO) 2 ), a quality of 0.5531g, purchased from Tianjin Kaitong Chemical Reagent Co., Ltd. 99.5% sodium tungstate (Na 2 WO 4 ), with a mass of 0.5877 g, purchased from Indium Nitrate (In(NO 3 ) 3 ), with a mass of 0.2551 g, purchased from thiourea (CH 4 N2 S), with a mass of 0.1218 g, dissolved the above-mentioned weighed medicine in 30 mL of double distilled water, ultrasonicated for 10 min, and stirred for 30 min to obtain a uniform and transparent solution, and poured the solution into a 100 mL polytetrafluoroethylene-lined microwave In the reactor, a microwave hydrothermal reaction was carried out at a reaction temperature of 160 °C and a reaction time of 90 min. After the reaction, the precipitate was repeatedly washed with deionized water and absolute ethanol for 4-5 times respectively, put into a drying box, set the drying temperature at 60 °C, and dried for 12 h, and the product CdIn was taken out. 2 S 4 / CdWO 4 . W...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a synthesis method of a CdS QDs@CdIn2S4 / CdWO4 photocatalyst, and belongs to the technical field of chemical industry. The method includes mixing four chemical reagent raw materials of thiourea (CH4N2S), sodium tungstate (Na2WO4), indium nitrate (In(NO3)3) and cadmium acetate (Cd(CH3COO)2) in secondary distilled water for ultrasonic treatment, stirring evenly and conductingmicrowave irradiation reaction through a microwave reactor to obtain CdIn2S4 / CdWO4; adding a CdS QDs precursor solution synthesized by using the cadmium acetate (Cd(CH3COO)2), the thiourea (CH4N2S) and mercaptopropionic acid (C3H6O2S), conducting secondary microwave irradiation and drying to obtain a final product CdS QDs@CdIn2S4 / CdWO4 composite photocatalyst. The crystal structure, the microstructure and the photocatalytic activity are measured. The product performance is greatly improved in the aspects of degradation of an organic pollutant like methyl orange and photocatalysis in hydrogenproduction by photolysis of water. A microwave assisting method is adopted and has the advantages of rapid reaction, good product crystal phase, simple practical operation method and stable and reliable sample and mass production performance.

Description

technical field [0001] The present invention relates to CdS QDs@CdIn 2 S 4 / CdWO 4 The invention relates to a synthesis method of a photocatalyst, belonging to the technical field of the chemical industry. Background technique [0002] The consumption of traditional energy sources and the related environmental problems caused by them have triggered an urgent demand for renewable and clean energy sources. At present, many semiconductor photocatalysts have been applied in the photolysis of water to produce hydrogen, but their respective shortcomings limit their practical applications. Typically, quantum dots have the property of generating multiple charge carriers using hot electrons or a single high-energy photon, thereby enhancing the photocatalytic performance of the material. In recent years, metal sulfides and tungstates have attracted much attention due to their unique optical and electrical properties, and they have been studied in photocatalysis due to their suitab...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J27/047B01J37/10B01J37/34C01B3/04
CPCC01B3/042B01J27/047B01J37/10B01J37/346C01B2203/0277C01B2203/1041B01J35/39Y02E60/36
Inventor 李莉刘雁南王润田宇
Owner QIQIHAR UNIVERSITY
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com