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A kind of Prussian blue and similar Prussian blue nanosheet film material and its in-situ preparation method

A Prussian blue-like, in-situ preparation technology, applied in the field of inorganic nano-membrane materials and their preparation, Prussian blue and Prussian blue-like nanosheet thin-film materials and their in-situ preparation, can solve the problems of single nanoparticle morphology and size control. less, nano particles easy to agglomerate, etc., to achieve the effect of simple equipment, convenient and easy operation of the process, and good dispersion

Inactive Publication Date: 2018-06-29
SHANGHAI SECOND POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many articles have reported the use of this technology to assemble Prussian blue or Prussian blue-like nanofilms, and to study the functionality of the film, but there are few studies on size control; moreover, the morphology of nanoparticles on the film is very simple
Although it is possible to embed pre-synthesized nanoparticles of different shapes and sizes into the film using layer-by-layer technology, the controllability is poor and the nanoparticles are easy to agglomerate.

Method used

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  • A kind of Prussian blue and similar Prussian blue nanosheet film material and its in-situ preparation method
  • A kind of Prussian blue and similar Prussian blue nanosheet film material and its in-situ preparation method
  • A kind of Prussian blue and similar Prussian blue nanosheet film material and its in-situ preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0034] (1) Dissolve 20 mg of polyallylamine hydrochloride (PAH) and polystyrene sulfonic acid (PSS) in 20 mL of deionized water, respectively, to prepare a 1 mg / mL aqueous solution;

[0035] (2) Place the clean substrate in step The resulting PAH solution was taken out after 20 minutes, rinsed three times with distilled water, and blown dry with nitrogen; then the substrate was placed in the PSS solution obtained in step 1, taken out after 20 minutes, rinsed three times with distilled water, and blown dry with nitrogen. The completion of one modification of PAH and PSS is called one modification cycle, and 3 to 4 modification cycles are performed to obtain a substrate modified by two polymers;

[0036] (3) Weigh 0.027g FeCl 3 ·6H 2 O is dissolved in 20mL HCl aqueous solution (pH=2), and the configuration concentration is 0.005mol / L FeCl 3 Aqueous solution; Weigh 0.042gK 4 [Fe(CN) 6 ]·3H 2 O is dissolved in 20mL HCl aqueous solution (pH=4), and the concentration is 0.005...

Embodiment 2

[0039] (1) Dissolve 20 mg of polyallylamine hydrochloride (PAH) and polystyrene sulfonic acid (PSS) in 20 mL of deionized water, respectively, to prepare a 1 mg / mL aqueous solution;

[0040] (2) Place the clean substrate in step The resulting PAH solution was taken out after 20 minutes, rinsed three times with distilled water, and blown dry with nitrogen; then the substrate was placed in the PSS solution obtained in step 1, taken out after 20 minutes, rinsed three times with distilled water, and blown dry with nitrogen. The completion of one modification of PAH and PSS is called one modification cycle, and 3 to 4 modification cycles are performed to obtain a substrate modified by two polymers;

[0041] (3) Weigh 0.054g FeCl 3 ·6H 2 O is dissolved in 20mL HCl aqueous solution (pH=2), and the configuration concentration is 0.01mol / L FeCl 3 Aqueous solution; weigh 0.084 gK 4 [Fe(CN) 6 ]·3H 2 O is dissolved in 20mL HCl aqueous solution (pH=4), and the concentration is 0.01 mo...

Embodiment 3

[0044] (1) Dissolve 20 mg of polyallylamine hydrochloride (PAH) and polystyrene sulfonic acid (PSS) in 20 mL of deionized water, respectively, to prepare a 1 mg / mL aqueous solution;

[0045] (2) Place the clean substrate in step The resulting PAH solution was taken out after 20 minutes, rinsed three times with distilled water, and blown dry with nitrogen; then the substrate was placed in the PSS solution obtained in step 1, taken out after 20 minutes, rinsed three times with distilled water, and blown dry with nitrogen. The completion of one modification of PAH and PSS is called one modification cycle, and 3 to 4 modification cycles are performed to obtain a substrate modified by two polymers;

[0046] (3) Weigh 0.216g FeCl 3 ·6H 2 O is dissolved in 20mL HCl aqueous solution (pH=2), and the configuration concentration is 0.04mol / L FeCl 3 Aqueous solution; Weigh 0.338gK 4 [Fe(CN) 6 ]·3H 2 O is dissolved in 20mL HCl aqueous solution (pH=4), and the concentration is 0.04 m...

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Abstract

The invention discloses Prussian blue and Prussian blue analogue nanosheet film materials and an in-situ preparation method thereof. A substrate is modified with two high-molecular polymers with opposite charges, namely PAH (poly allylamine hydrochloride) and PSS (sodium polystyrene sulfonate), and Prussian blue or Prussian blue analogue square nanosheets are synthesized in situ on the modified substrate with metal ionic salt and potassium ferrocyanide as raw materials. A test of a prepared nanosheet film through ultraviolet-visible spectroscopy, a scanning electron microscope and a transmission electron microscope proves that the nanosheets have controllable size and are uniformly dispersed. The growth direction of the nanosheets is limited by the porous network of the high-molecular polymers, so that the nanosheets are square or rectangular, water is used as a solvent in the whole preparation process of the film and is harmless to the environment, the preparation process is simple and feasible, the cost is low, equipment is simple, the film materials with different kinds of functionality are obtained by changing the variety of simple ions, and the in-situ preparation method has important application value in the field of material preparation.

Description

technical field [0001] The invention relates to an inorganic nano-membrane material and a preparation technology thereof, in particular to a Prussian blue and Prussian blue-like nano-sheet thin film material and an in-situ preparation method thereof, and belongs to the field of material technology. Background technique [0002] Prussian blue and Prussian blue-like are a class of octahedral coordination compounds with special physical and chemical properties, which are widely used in the fields of electrochemistry and electronics, such as: electrochromic displays, molecular magnet devices, electrochemical sensors and ion sieves, etc. , have shown excellent performance and have very broad application prospects. In order to better understand their optical, electrical, magnetic and other important properties, it has become a hot spot in recent years to make them into nano-films for research and finally apply them to related fields. [0003] Layer-by-layer electrostatic self-ass...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/42C04B41/52
Inventor 王金敏兰阳
Owner SHANGHAI SECOND POLYTECHNIC UNIVERSITY
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