Amino acid intercalation manganese dioxide and its preparation method

A technology of manganese dioxide and amino acids, applied in chemical instruments and methods, manganese oxide/manganese hydroxide, inorganic chemistry, etc., can solve problems such as intercalation difficulties

Inactive Publication Date: 2006-07-12
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong force between the manganese dioxide layers, the intercalation of the guest is difficult, and the literature on amino acid intercalation into manganese dioxide has not been reported yet.

Method used

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  • Amino acid intercalation manganese dioxide and its preparation method
  • Amino acid intercalation manganese dioxide and its preparation method
  • Amino acid intercalation manganese dioxide and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 200mL containing 0.6mol / L NaOH and 1.5mol / L H 2 o 2 The mixed solution was quickly added to 100mL containing 0.4mol / L Mn(NO 3 ) 2 solution, stirred vigorously for 30 minutes, filtered, transferred the filter cake to a 100mL polytetrafluoroethylene cup, added 40mL NaOH solution with a concentration of 2mol / L, stirred to form a paste, sealed the polytetrafluoroethylene cup in water In a hot kettle, hydrothermal treatment was carried out at 160°C for 15 hours. After the hydrothermal kettle was naturally cooled to room temperature, the kettle was opened for suction filtration, and the filter cake was washed with deionized water until the pH value of the filtrate was 8. The filter cake was dried in an air atmosphere at 70° C. for 9 hours to obtain layered manganese dioxide.

[0043] Weigh 2.5g of layered manganese dioxide solid powder and add to 300mL of HNO with a concentration of 1.0mol / L 3 solution, stirred at room temperature for 3 days, during which a new 1.0mol / L ...

Embodiment 2

[0048] 200mL containing 0.8mol / L NaOH and 1.2mol / L H 2 o 2 The mixed solution was quickly added to 100mL containing 0.4mol / L Mn(NO 3 ) 2 solution, stirred vigorously for 20 minutes, filtered, transferred the filter cake to a 100mL polytetrafluoroethylene cup, added 50mL NaOH solution with a concentration of 3mol / L, stirred to form a paste, sealed the polytetrafluoroethylene cup in water In a hot kettle, hydrothermal treatment was carried out at 150°C for 20 hours. After the hydrothermal kettle was naturally cooled to room temperature, the kettle was opened for suction filtration, and the filter cake was washed with deionized water until the pH value of the filtrate was 9. The filter cake was dried in an air atmosphere at 80° C. for 6 hours to obtain layered manganese dioxide.

[0049] Weigh 2.5g of layered manganese dioxide solid powder and add to 280mL of HNO with a concentration of 1.5mol / L 3 solution, stirred and reacted at room temperature for 3 days, during which a n...

Embodiment 3

[0054] Manganese dioxide stripping method is the same as in Example 1.

[0055] Take exfoliated manganese dioxide and add it to deionized water to make 100mL of exfoliated manganese dioxide sol with a manganese dioxide content of 0.04mol / L; Concentration is the hydrochloric acid solution of 0.1mol / L to adjust the pH value to 8, according to L-lysine and MnO 2 Mix the two solutions at a molar ratio of 0.2:1, stir and react at 40°C for 24 hours, filter, wash with deionized water for 3 to 4 times, and clean the L-lysine adsorbed on the surface of the precipitate, and then in air at 70°C Let dry for 12 hours.

[0056] Adopt the method for embodiment 1 to analyze product, obtain its chemical composition as:

[0057] Na 0.043 h 0.067 (C 4 h 12 N) 0.070 (C 6 h 15 N 2 o 2 ) 0.050 MnO 2 0.38H 2 O, X-ray powder diffraction analysis results see image 3 (c), d 001 It is 0.89nm, indicating that L-lysine is successfully inserted into the manganese dioxide layer.

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Abstract

The invention discloses a manganese dioxide composite material of amino intercalation and making method of planar assembly, wherein the chemical composition of composite material is (A<+>)a(Amino+)bMnO2mH2O ( A<+> is inorganic or organic cation, such as one, two or three of sodium ion, hydrogen ion and tetramethyl ammonium ion; Amino is one of L- lysine, L- arginine and L-histidine; a and b is the quantity of A<+> and Amino<+> separately; a+b<=0.4; m is the quantity of crystallinic water; 0.1 and A<+> in the middle; the stratified structure Delta-MnO2 is prepared by hot water, which is stripped by tetramethyl ammonium hydroxide to form plywood with negative electricity; the plywood and amino cation are self-assembly by electrostatic action, which produces the composite material of intercalation-structured amino acid-manganese dioxide. The invention possesses potential appliance value in the chiral catalysis, electrochemical catalysis and electrochemical biological sensor domain.

Description

technical field [0001] The invention relates to the preparation of an amino acid-manganese dioxide composite material with an intercalation structure by adopting a peeling and assembling method, and belongs to the technical field of organic-inorganic composite materials and their preparation. Background technique [0002] Based on the layered structure precursor, the intercalation assembly technology is used to introduce the guest species into the interlayer to construct the intercalation structure material, which can realize the design and tailoring of the material structure at the molecular level, endow the material with more powerful advanced functions, and can be widely used in Catalyst materials, energy storage and conversion materials, sensor sensitive materials and other fields are hot spots in the research and development of advanced functional materials at home and abroad. [0003] As a layered structure precursor, it can be a cationic layered compound, such as mont...

Claims

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Application Information

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IPC IPC(8): C01B37/00C01B39/00C01G45/02
Inventor 杨文胜张熊段雪
Owner BEIJING UNIV OF CHEM TECH
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