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Method for preparing lanthanide series rare earth ions doped with bismuth titanate non-plumbum ferroelectric nano-wire

A technology of ion doping and lanthanide rare earth, which is applied in the field of preparation of lanthanide rare earth ion-doped bismuth titanate lead-free ferroelectric nanowire material, can solve the problems of complex operation process, high pressure of catalyst, long preparation cycle, etc., and achieve The effect of simple technical process, easy control and good market prospect

Inactive Publication Date: 2008-10-22
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gu Haoshuang and others prepared Nd-doped bismuth titanate nanowires by hydrothermal method, but the method they used had the disadvantages of complex operation process, need of catalyst and high pressure, and long preparation cycle

Method used

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  • Method for preparing lanthanide series rare earth ions doped with bismuth titanate non-plumbum ferroelectric nano-wire
  • Method for preparing lanthanide series rare earth ions doped with bismuth titanate non-plumbum ferroelectric nano-wire
  • Method for preparing lanthanide series rare earth ions doped with bismuth titanate non-plumbum ferroelectric nano-wire

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]With electronic balance, according to the molar ratio of Bi and Nd is 3.15: 0.85, take by weighing bismuth nitrate (excessive 10%) and neodymium nitrate 1.6978g and 0.3865g respectively, then add glacial acetic acid as solvent and carry out magnetic stirring, its mixture is mixed at normal temperature Completely dissolve to obtain solution A; according to the molar ratio of bismuth, neodymium and titanium is 3.15:0.85:3, weigh 1.0419g of tetrabutyl titanate and put it into another container, then add an appropriate amount of acetylacetone as a stabilizer, and then add solvent Glacial acetic acid, stirred for a while to obtain solution B; while stirring solution A with a magnetic stirrer, slowly add solution B to solution A dropwise, then dilute it with glacial acetic acid, and continue stirring for 1 hour to obtain a 0.05mol / L solution 20ml, after standing for 3 days, filter to get clear and transparent orange-yellow Bi 3.15 Nd 0.85 Ti 2 o 12 solution. Weigh 0.06g of...

Embodiment 2

[0037] Bi 3.15 Nd 0.85 Ti 3 o 12 The preparation process of the solution is the same as in Example 1. Weigh 0.2g of polyvinylpyrrolidone (PVP, Mw=630,000), dissolve it in 1ml of dichloromethane, magnetically stir at room temperature for 40min until completely dissolved, and prepare a 13.1% polyvinylpyrrolidone solution by mass ratio. Using acetylacetone as a stabilizer, take 1ml of Bi 3.15 Nd 0.85 Ti 3 o 12 The solution was added to the above-mentioned polyvinylpyrrolidone solution, and subjected to vigorous magnetic stirring at room temperature for 3 hours until the solution was completely uniformly mixed to obtain an orange-yellow transparent viscous solution, which was used as an electrospinning precursor solution for preparing nanowires. Put the above-mentioned electrospinning precursor solution into a plastic syringe, install a stainless steel needle and connect it to the positive electrode, the inner diameter of the needle is 0.5mm, adjust and control the voltage ...

Embodiment 3

[0039] With an electronic balance, according to the molar ratio of Bi and Nd is 3.54:0.46, respectively weigh bismuth nitrate (10% excess) and neodymium nitrate 1.9079g and 0.2092g, then add glacial acetic acid as solvent and carry out magnetic stirring, and its mixture is mixed at normal temperature Completely dissolve to obtain solution A; according to the molar ratio of bismuth, neodymium and titanium is 3.54:0.46:3, weigh 1.0419g of tetrabutyl titanate and put it into another container, then add an appropriate amount of acetylacetone as a stabilizer, and then add solvent Glacial acetic acid, stirred for a while to obtain solution B; while stirring solution A with a magnetic stirrer, slowly add solution B to solution A dropwise, then dilute it with glacial acetic acid, and continue stirring for 1 hour to obtain a 0.05mol / L solution 20ml, after standing for 7 days, filter to get clear and transparent orange-yellow Bi 3.54 Nd 0.46 Ti 3 o 12 solution. Weigh 0.06g of polyvi...

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Abstract

The invention is provides a simple, convenient, and inexpensive method for producing lanthanide series rare earth ion adulterating bismuth titanate non-lead ferro-electricity nanowire, including 1) preparing the electrospinning precursor solution that preparing the lanthanide series rare earth ion adulterating bismuth titanate solution according to the formula of Bi4-xRxTi3O12 (R is lanthanide series rare earth element, 0 C04B 35 / 475 C04B 35 / 462 C04B 35 / 624 C04B 35 / 64 3 7 2 2007 / 4 / 29 101037330 2007 / 9 / 19 100427431 2008 / 10 / 22 2008 / 10 / 22 2008 / 10 / 22 Xiang Tan University Hunan 411105 Zhong Xiangli Liao Min Wang Jinbin Zhou Yichun yanyong 43114 The Patent Agency of Changsha City The People's Road, the City of Changsha (Yaoling), Hunan Province 410011

Description

technical field [0001] The invention relates to a method for preparing a novel lead-free ferroelectric memory material, more specifically, the invention provides a method for preparing a lead-free ferroelectric nanowire material doped with bismuth titanate by lanthanide rare earth ions. Background technique [0002] Due to their excellent ferroelectric, piezoelectric, dielectric, pyroelectric and photoelectric effects, ferroelectric materials have broad application prospects in the fields of memory, drives, sensors, micro-electromechanical systems, capacitors and microwave devices, and have been recognized by the scientific community. of great importance. However, the main object of current research is lead-based ferroelectric materials. During the preparation process, not only the product consistency is poor due to the volatilization of lead oxide, but the cost is high. In particular, lead is highly toxic and has irreversible damage to human organs and the brain nervous sys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/475C04B35/462C04B35/624C04B35/64
Inventor 钟向丽廖敏王金斌周益春
Owner XIANGTAN UNIV
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