Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Nano sensor with catalytic activity triggered by Hg ions, preparation method of nano sensor and application of nano sensor in Hg ion detection

A nano sensor and catalytic activity technology, which is applied in chemical analysis by catalysis, analysis by making materials undergo chemical reactions, and material analysis by observing the impact on chemical indicators, etc., can solve the secondary hazards of the human body and improve Process cost, eye damage and other problems, to achieve the effect of easy operation, solving specific problems, and cheap raw materials

Pending Publication Date: 2022-02-25
NANHUA UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The relatively complicated pretreatment in this invention puts forward certain requirements on the operation technology, and the argon gas required for the detection not only increases the process cost but also causes secondary harm to the human body, such as silicosis and eye damage.

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
  • Nano sensor with catalytic activity triggered by Hg ions, preparation method of nano sensor and application of nano sensor in Hg ion detection
  • Nano sensor with catalytic activity triggered by Hg ions, preparation method of nano sensor and application of nano sensor in Hg ion detection
  • Nano sensor with catalytic activity triggered by Hg ions, preparation method of nano sensor and application of nano sensor in Hg ion detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] (1) Nanosensor preparation: Weigh 0.1g of MCM-41 and 0.01mmoL of MnSO4 4H2O, dissolve in 20mL of deionized water, ultrasonically disperse for 2min, stir vigorously with a magnetic stirrer for 30min, and add dropwise while stirring 0.05mL triethanolamine, keep stirring for 2 hours, centrifuge with high-speed centrifuge to obtain particles, add water and ethanol to wash three times, dry at 60°C, the SEM image is as follows figure 2 shown by figure 2 It can be seen that the manganese chelate is evenly attached to the surface of MCM-41.

[0071] (2) Preparation of test strips: Weigh 10 mg of nanosensors from step (1) and disperse them in 4 mL of HAc-NaAc buffer solution (pH = 4), sonicate at 30°C for 30 min to form a uniform suspension, and use a spray gun to 0.2 MPa N 2 Spray the suspension onto the test paper at a distance of 15 cm, and dry it at 50°C for later use.

[0072] (3) Drawing of calibration line: configure standard Hg with concentrations of 0 μM, 1 μM, 2 μM...

Embodiment 2

[0081] (1) Nanosensor preparation: Weigh 0.1g of MCM-41 and 0.01mmoL of Mn(NO 3 ) 2 , dissolved in 20mL deionized water, sonicated for 2min to disperse evenly, stirred vigorously with a magnetic stirrer for 30min, and added dropwise 0.05mL ethylenediamine (record Sample 1) or 5mg PVP (denote Sample 2) or cyclodextrin ( Record Sample 3) or glucose (record Sample 4), continue to stir for 2 hours, centrifuge with a high-speed centrifuge to obtain particles, add water and ethanol to wash three times, and dry at 60°C.

[0082] (2) Preparation of test strips: Weigh 10 mg of nanosensors from step (1) and disperse them in 4 mL of HAc-NaAc buffer solution (pH = 4), sonicate at 30°C for 30 min to form a uniform suspension, and use a spray gun to 0.2 MPa N 2 Spray the suspension onto the test paper at a distance of 15 cm, and dry it at 50°C for later use.

[0083] (3) Wastewater Hg 2+ Test: take 20μL of 1mMABTS and 10μL containing different Hg 2+ Concentration of wastewater samples w...

Embodiment 3

[0088] (1) Nanosensor preparation: Weigh 0.1g of MCM-41 and 0.01mmoL of Mn(NO 3 ) 2 , dissolved in 20mL deionized water, ultrasonicated for 2min to disperse evenly, stirred vigorously with a magnetic stirrer for 30min, while stirring, added 0.05mL triethanolamine dropwise, continued stirring for 2h, centrifuged with a high-speed centrifuge to obtain particles, added water and ethanol to wash Three times, dry at 60°C.

[0089] (2) Preparation of test strips: Weigh 10 mg of nanosensors from step (1) and disperse them in 4 mL of HAc-NaAc buffer solution (pH=4), sonicate at 30°C for 30 min to form a uniform suspension, and use a spray gun to N 2 Spray the suspension onto the test paper at a distance of 15 cm, and dry it under vacuum at 50°C for later use.

[0090] (3) Wastewater Hg 2+ Test: Take 20μL of 1mM ABTS and 10μL containing different Hg 2+ The wastewater samples at the concentration were added together into HAc-NaAc (50 mM) at pH=4, centrifuged after 1 min to obtain the...

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 provides a nano sensor with catalytic activity triggered by Hg < 2 + >. The nano sensor comprises a mesoporous molecular sieve carrier and a manganese chelate loaded on the surface of the mesoporous molecular sieve carrier. Under the stimulation of Hg < 2 + >, the manganese chelate can quickly enhance the oxidation capacity to ABTS. On the basis, ABTS is used as an indicator, the manganese chelate can specifically detect Hg < 2 + >, and further, the prepared pure white powder can be processed into a test strip convenient for testing for rapid colorimetric detection of Hg < 2 + > in wastewater and batteries in the environment. The detection external environment is mild (no additional additive, especially oxidant), and the method is simple and convenient to operate, low in cost, high in specificity and low in detection limit. The preparation process of the nano material is simple, raw materials are cheap, and the nano material is very suitable for large-scale industrial production and has potential industrial application value.

Description

technical field [0001] The invention relates to the technical field of environmental detection, in particular to a nanometer sensor whose catalytic activity is triggered by Hg ions, a preparation method thereof and an application in Hg ion detection. Background technique [0002] my country is the main mercury-producing country in the world, and it is also a country with serious mercury pollution. Due to its excellent physical and chemical properties, metallic mercury and its compounds are widely used in chemistry, medicine, metallurgy, electrical equipment, military and other precision high-tech fields, such as measuring instruments, electronic and electrical products, chemical drugs, catalysts, mercury vapor lamps , Thunder Mercury, etc. However, with the migration and transformation of mercury in nature, it poses a serious threat to human health, plant growth and soil environment. For example, mercury is easy to accumulate in the human body. Once the mercury in the huma...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/10G01N21/78
CPCG01N31/10G01N21/78
Inventor 吴生焘林英武詹璇黄刚强
Owner NANHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com