Sol–gel synthesis of high surface area nanostructured zirconia powder by surface chemical modification

Bangi, Uzma K.H.; Park, Chang Sun; Baek, Seungsu; Park, Hyung Ho

doi:10.1016/j.powtec.2013.02.014

Cited by 24 publications

(21 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The simple chemical reactions at the base of the process are triggered when the precursors are brought into contact with water. To prepare the pure zirconia powders [37][38][39][40][41], the precursor used is zirconium n-propoxide (Zr(OC 3 H 7 ) 4 , 70% diluted in n-PrOH) [42]. Sol-gel synthesis can also be carried out to obtain zirconia powders doped with 3% of Yttria [43].…”

Section: Zirconia Nanopowder Synthesesmentioning

confidence: 99%

Nanostructured Pure and Doped Zirconia: Synthesis and Sintering for SOFC and Optical Applications

Prakasam¹,

Valsan²,

Lu³

et al. 2018

Sintering Technology - Method and Application

View full text Add to dashboard Cite

Zirconia is a multifunctional material with potential applications in wide domains. Rareearth doped zirconia and stabilized zirconia yield interesting properties based on the phase transitions induced by the sintering conditions. Zirconia nanopowders were prepared by hydrothermal technique. Synthesis methods of zirconia with various rare earths are discussed here. An overview of the sintering of zirconia-based ceramics is presented in particular for SOFC and sensors and optical applications.

show abstract

Section: Zirconia Nanopowder Synthesesmentioning

confidence: 99%

Nanostructured Pure and Doped Zirconia: Synthesis and Sintering for SOFC and Optical Applications

Prakasam¹,

Valsan²,

Lu³

et al. 2018

Sintering Technology - Method and Application

View full text Add to dashboard Cite

show abstract

“…Мікроструктура і властивості матеріалів значною мірою визначаються характеристиками вихідних порошків, які, в свою чергу, залежать від способу їх одержання [7]. В якості вихідних порошків для мікроструктурного проектування біоінертних імплантатів на основі ZrO 2 ефективно застосувати гідротермальні порошки [5][6][7].…”

Section: вступunclassified

Nanocrystalline Powders Based on ZrO2 for Fabrication of Composites Stable to Ageing

2017

Nanosist. Nanomater. Nanotehnol.

View full text Add to dashboard Cite

Гідротермальним синтезом у лужному середовищі одержано нанокристалічні порошки твердого розчину на основі ZrO 2 (мол.%): 97ZrO 2-3Y 2 O 3 , 90ZrO 2-2Y 2 O 3-8CeO 2 та досліджено зміну їхніх властивостей при термічному обробленні в інтервалі температур 400-1300С. Для дослідження властивостей порошків використано методи рентґенофазового, диференційно-термічного та хімічного аналізів, електронної мікроскопії та метод БЕТ. Встановлено, що після гідротермального синтезу в порошках формується термодинамічно нерівноважна система, до складу якої входить суміш низькотемпературного метастабільного кубічного твердого розчину на основі ZrO 2 (F-ZrO 2) та тетрагонального твердого розчину на основі ZrO 2 (Т-ZrO 2). Розмір первинних частинок не перевищує 10-15 нм. Питома поверхня порошків змінюється від 1 до 99 м 2 /г. Nanocrystalline powders of solid solutions based on ZrO 2 (mol.%), 97ZrO 2-3Y 2 O 3 , 90ZrO 2-2Y 2 O 3-8CeO 2 , are fabricated by the hydrothermal synthesis in an alkaline medium. The powder-properties' variations are investigated after heat treatment in the temperature range 400-1300C. X-ray diffraction methods, differential-thermal and chemical analyses, electron microscopy and BET method are used for the investigation of the powder properties. The formation of thermodynamically nonequilibrium system, which includes a mixture of low-temperature metastable cubic solid solution based on ZrO 2 (F-ZrO 2) and tetragonal solid solution based on ZrO 2 (t-ZrO 2), is revealed after the hydrothermal synthesis of powders. The primary-particles' size is less than 10-15 nm. Specific surface of powders is varying from 1 to 99 m 2 /g. Гидротермальным синтезом в щелочной среде получены нанокристаллические порошки твёрдого раствора на основе ZrO 2 (мол.%): 97ZrO 2-3Y 2 O 3 , 90ZrO 2-2Y 2 O 3-8CeO 2 и исследованы изменения их свойств при термической обработке в интервале температур 400-1300С. Для иссле

show abstract

“…There are many studies regarding zirconia surface modifications to enhance osseointegration, involving machining 13) , sandblasting 14,15) , laser treatment 16) , plasma spraying 17) , sol-gel 18) and surface bioactive coatings [19][20][21] . However, surface modification of zirconia ceramics is technically difficult 22) due to its high hardness.…”

Section: Introductionmentioning

confidence: 99%

“…Plasma spraying would change the component of the coatings. In addition, there is a weak bonding between the substrate and coating layer by plasma spraying 17) , as well as sol-gel method 18) . Recently, coating with cell adhesion peptides surface modification has been studied as a strategy to promote zirconia implant integration.…”

Section: Introductionmentioning

confidence: 99%

Ca-P spots modified zirconia by liquid precursor infiltration and the effect on osteoblast-like cell responses

Liu

Zhang

et al. 2018

Dent. Mater. J.

View full text Add to dashboard Cite

Ca-P spots modified zirconia by liquid precursor infiltration and the cell responses were investigated. Pre-sintered zirconia specimens were immersed in Ca-P precursor solution. After dense sintering, scanning electron microscopy showed Ca-P spots were formed on the zirconia and anchored with zirconia substrates. The distribution density was increased with the extension of immersion time. Energy dispersive spectrometer confirmed the stoichiometric Ca/P ratio was about 1.67. After hydrothermal treatment, Ca-P spots turned into rod crystals where diffraction peaks of tricalcium phosphate and hydroxyapatite were detected by X-ray diffraction, and Ca 2+ and PO4 3− release decreased slightly (p>0.05). There was no significant decrease on three-point bending strength (p>0.05). Osteoblast-like MC3T3-E1 cells attached and spread well and showed higher proliferation on Ca-P spots modified zirconia (p<0.05), though its initial alkaline phosphatase activity was not significant high (p>0.05). In conclusion, Ca-P liquid precursor infiltration is a potential method to modify the zirconia ceramics for improving bioactivity.

show abstract

Sol–gel synthesis of high surface area nanostructured zirconia powder by surface chemical modification

Cited by 24 publications

References 19 publications

Nanostructured Pure and Doped Zirconia: Synthesis and Sintering for SOFC and Optical Applications

Nanostructured Pure and Doped Zirconia: Synthesis and Sintering for SOFC and Optical Applications

Nanocrystalline Powders Based on ZrO2 for Fabrication of Composites Stable to Ageing

Ca-P spots modified zirconia by liquid precursor infiltration and the effect on osteoblast-like cell responses

Contact Info

Product

Resources

About