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A kind of cobalt-containing layered potassium titanate plate-like particle and its hydrothermal preparation method

A potassium titanate, plate-shaped technology, applied in the field of cobalt-containing layered potassium titanate plate-shaped particles and its hydrothermal preparation, can solve the problems of unfavorable industrial production, long reaction cycle, complex process, etc. The effect of controllable structure, high repeatability and simple preparation process

Active Publication Date: 2019-06-14
陕西水热创材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, these methods have disadvantages such as complex process, high energy consumption, and long reaction cycle, which are not conducive to industrial production.

Method used

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  • A kind of cobalt-containing layered potassium titanate plate-like particle and its hydrothermal preparation method
  • A kind of cobalt-containing layered potassium titanate plate-like particle and its hydrothermal preparation method
  • A kind of cobalt-containing layered potassium titanate plate-like particle and its hydrothermal preparation method

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Experimental program
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Effect test

Embodiment 1

[0022] 5g TiO 2 And 6.07g Co(NO 3 ) 2 ·6H 2 O was added to 15mL of KOH aqueous solution with a concentration of 3mol / L, stirred to make the raw materials evenly mixed, and hydrothermally reacted at 150℃ for 4h. After the reaction, filtered, washed and dried to obtain cobalt-containing layered potassium titanate K 0.8 Co 0.4 Ti 1.6 O 4 The plate-shaped particles have a length of about 1 to 2 μm and a thickness of 100 to 200 nm.

Embodiment 2

[0024] 5g TiO 2 And 6.07g Co(NO 3 ) 2 ·6H 2 O was added to 20mL of KOH aqueous solution with a concentration of 6mol / L, stirred to make the raw materials evenly mixed, and hydrothermally reacted at 180°C for 8h. After the reaction, filtered, washed and dried to obtain cobalt-containing layered potassium titanate K 0.8 Co 0.4 Ti 1.6 O 4 The plate-shaped particles have a length of about 1 to 2 μm and a thickness of 100 to 200 nm.

Embodiment 3

[0026] 5g TiO 2 And 6.07g Co(NO 3 ) 2 ·6H 2 O was added to 15 mL of KOH aqueous solution with a concentration of 10 mol / L, stirred to make the raw materials evenly mixed, and hydrothermally reacted at 250°C for 12 hours. After the reaction, filtered, washed, and dried to obtain cobalt-containing layered potassium titanate K 0.8 Co 0.4 Ti 1.6 O 4 The plate-shaped particles have a length of about 1 to 2 μm and a thickness of 100 to 200 nm.

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Abstract

The invention discloses a cobalt-containing stratified potassium titanate laminar particle and a hydrothermal preparation method thereof and belongs to the field of material preparation. TiO2 and Co(NO3)2.6H2O are added into a KOH water solution, stirring is performed to uniformly mix the raw materials for a hydrothermal reaction, and after finish of the reaction, filtering, washing and drying areperformed to obtain the cobalt-containing stratified potassium titanate laminar particle. The laminar particle has the composition expression formula of K0.8Co0.4Ti1.6O4,and is 1-2 [mu]m in length and 100-200 nm in thickness. Compared with a traditional solid-phase method and a traditional molten-salt growth method, the hydrothermal preparation method has the advantages that the prepared laminarK0.8Co0.4Ti1.6O4 laminar particle is small in grain size, high in purity and controllable in shape and microstructure, and the hydrothermal preparation method is simple in preparation process, low inenergy consumption, high in repeatability and favorable for industrial production.

Description

Technical field [0001] The invention belongs to the field of material preparation, and specifically relates to a cobalt-containing layered potassium titanate plate-shaped particle and a hydrothermal preparation method thereof. Background technique [0002] Layered titanate is a typical layered compound, which has good photocatalytic, electrochemical, and ion exchange properties, and can be modified at the molecular level by doping, interlayer pillaring, etc. Design, tailoring and assembly to improve the photocatalytic activity and electrochemical performance of materials have important potential applications. [0003] As a battery active material and photocatalytic material, the performance of layered titanate is largely determined by its microscopic morphology, particle size and specific surface area. Currently, cobalt-containing layered potassium titanate (K 0.8 Co 0.4 Ti 1.6 O 4 The preparation methods of) are mainly solid phase method and molten salt method. Li B W, Osada et ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G51/00
Inventor 孔新刚王兴冯旗黄剑锋殷立雄刘毅李嘉胤
Owner 陕西水热创材科技有限公司