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MoO3@PEDOT composite material, preparation method and applications thereof

A composite material and reaction technology, applied in instruments, optics, nonlinear optics, etc., can solve problems such as zero-dimensional nanoparticle disorder, achieve outstanding electrochromic performance, simple preparation process, and low cost

Active Publication Date: 2020-03-20
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these studies have utilized MoO 3 Nanoparticles and PEDOT:PSS are combined to prepare composite materials, but zero-dimensional nanoparticles are disordered, and the order of nanostructures cannot be better utilized to provide convenient channels for ion or electron transport, and the current research on MoO 3 There are no reports on the literature or patents on the use of composite materials with PEDOT in the field of electrochromism

Method used

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  • MoO3@PEDOT composite material, preparation method and applications thereof
  • MoO3@PEDOT composite material, preparation method and applications thereof
  • MoO3@PEDOT composite material, preparation method and applications thereof

Examples

Experimental program
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Embodiment 1

[0048] 1) Conductive glass pretreatment: ITO glass is ultrasonicated for 15 minutes each in acetone, absolute ethanol, and deionized water, and then dried as a spin-coating substrate.

[0049] 2) MoO 3 Preparation of nanobelts: with reference to Zhang Yuan, etc. in the literature (imaging science and photochemistry, 2012,30 (5): 384-389), the molybdenum powder that takes 1g is dispersed in 200mL H 2 o 2 (30%) and H 2 In the mixed solution of O (volume ratio 1:1), after rapid stirring, a light yellow clear and transparent solution was obtained; then transferred to a three-necked flask and stirred and heated at reflux at 100°C for 24h; 2 O. Wash the product by centrifugation with absolute ethanol, recover the precipitate, and dry it under vacuum at 50°C to obtain MoO 3 nanoribbons, such as figure 1 As shown, observed by scanning electron microscope, MoO 3 The morphology of the nanoribbons is very uniform, and the width is about 0.25 μm.

[0050] 3) MoO 3 Preparation of @P...

Embodiment 2

[0055] Same as Example 1, the difference is:

[0056] In the preparation of the composite material in the embodiment 2 step (3), at first, weigh the MoO prepared above of 0.1g 3 The nanobelts were dispersed in 10 mL of deionized water, and after ultrasonic treatment for 2 h, a 1 mol / L HCl (10 mL) solution containing 0.359 mL of EDOT monomer was added dropwise to the above solution. Subsequently, 1 mol / L HCl (10 mL) containing 0.18 g of ammonium persulfate (APS) was added dropwise to the above cloudy solution, and finally the solution was transferred to a constant temperature shaker, and the temperature was set at 25 ° C, and the rotation speed was 100 rpm for 8 h. Wash by centrifugation, recover the precipitate, and dry to obtain MoO 3 @PEDOT composite material, there is a scanning electron microscope to observe that PEDOT is evenly wrapped in MoO 3 On the surface, the thickness of the composite PEDOT is about 30nm.

[0057] 4) Preparation of composite electrochromic film: ...

Embodiment 3

[0060] Same as Example 1, the difference is:

[0061] In the preparation of the composite material in the step (3) of embodiment 3, at first, weigh the MoO prepared above of 0.1g 3 Nanobelts were dispersed in 10 mL of deionized water, and after ultrasonic treatment for 1.5 h, a 1 mol / L HCl (10 mL) solution containing 0.359 mL of EDOT monomer was added dropwise to the above solution. Subsequently, 1 mol / L HCl (10 mL) containing 0.18 g of ammonium persulfate (APS) was added dropwise to the above turbid solution, and finally the solution was transferred to a constant temperature shaker, and the temperature was set at 15 ° C, and the rotation speed was 300 rpm for 24 h. Wash by centrifugation, recover the precipitate, and dry to obtain MoO 3 @PEDOT composite material, there is a scanning electron microscope to observe that PEDOT is evenly wrapped in MoO 3 On the surface, the thickness of the composite PEDOT is about 85nm.

[0062]4) Preparation of composite electrochromic film:...

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Abstract

The invention discloses a MoO3@PEDOT composite material, a preparation method and applications thereof, wherein the MoO3@PEDOT composite material comprises a MoO3 nanobelt and PEDOT coating the surface of the MoO3 nanobelt. The preparation method comprises the following steps: synthesizing a MoO3 nanobelt, and then polymerizing PEDOT on the surface of the MoO3 nanobelt by adopting an in-situ chemical oxidation reduction method to obtain the MoO3@PEDOT composite material with a coaxial nanobelt structure. The application of the composite material in the field of electrochromism is that a MoO3@PEDOT compound suspension is prepared, then MoO3@PEDOT composite films with different thicknesses are prepared by utilizing a film forming method, and the electrochromism performances of the MoO3@PEDOTcomposite films are researched. According to the material, the compounding of organic and inorganic electrochromic materials on a micro-nano level is realized, and a convenient channel can be provided for ion or electron transmission by utilizing the orderliness of a one-dimensional nanobelt, so that a film prepared from the material has good electrochromic performance, and has wide application prospects in the fields of intelligent windows, anti-glare glasses and the like.

Description

technical field [0001] The invention relates to the field of electrochromism. More specifically, a MoO 3 @PEDOT Composite materials and their preparation and application. Background technique [0002] Electrochromic materials can achieve reversible optical changes at a small driving voltage (<3V), and are widely used in smart windows, displays, military camouflage, infrared thermal radiation modulation, automotive anti-glare rearview mirrors and information storage, etc. field. At present, electrochromic materials are mainly divided into inorganic electrochromic materials, organic electrochromic materials and composite electrochromic materials. Inorganic electrochromic materials are mainly metal oxides such as tungsten trioxide, molybdenum trioxide, iridium oxide or titanium oxide. . Inorganic electrochromic materials have the advantages of good environmental stability, low toxicity of the reaction system, strong adhesion, strong radiation resistance, and good cycle s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L65/00C08G61/12C08K3/22C08J5/18G02F1/15
CPCC08G61/126C08K3/22C08J5/18G02F1/15C08K2201/011C08K2003/2255C08G2261/11C08G2261/228C08G2261/3223C08J2365/00C08L65/00
Inventor 孙承华郑金晓周树云胡秀杰
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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