Sol-gel synthesis of tetragonal ZrO2 nanoparticles stabilized by crystallite size and oxygen vacancies

被引：59

作者：

Mahmood, Qaiser ^{[1
]}

Afzal, Adeel ^{[1
,2
,3
]}

Siddiqi, Humaira M. ^{[1
]}

Habib, Amir ^{[4
]}

机构：

[1] Quaid I Azam Univ, Dept Chem, Islamabad 45320, Pakistan

[2] Univ Bari, Dept Chem, I-70126 Bari, Italy

[3] King Fahd Univ Petr & Minerals, Affiliated Coll Hafr Al Batin, Hafar al Batin 31991, Saudi Arabia

[4] Natl Univ Sci & Technol, Sch Chem & Mat Engn, Islamabad 44000, Pakistan

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2013年 / 67卷 / 03期

关键词：

Ceramics; Crystallite size; Oxygen vacancy; Nanoparticles; Zirconia; ZIRCONIA NANOPARTICLES; PHASE-TRANSITION; THIN-FILMS; GROWTH; NANOCRYSTALLITES; TRANSFORMATION; POWDERS;

D O I：

10.1007/s10971-013-3112-8

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this letter, we present a facile route to produce metastable tetragonal zirconia (ZrO2) nanoparticles via pH-controlled precipitation of dilute zirconyl nitrate dihydrate [ZrO(NO3)(2)center dot 2H(2)O] solution in liquid NH3 under ambient conditions and calcination at 500 A degrees C for 2 h. The phase pure tetragonal ZrO2 nanoparticles are obtained at pH 9. The effect of pH on metastable phase stabilization in precipitated ZrO2 nanoparticles is demonstrated with the help of XRD, SEM/EDX, and X-ray photoelectron spectroscopy techniques. The stability of tetragonal ZrO2 phase is attributed to the smaller crystallite size and greater oxygen deficiency in phase-pure tetragonal ZrO2.

引用

页码：670 / 674

页数：5

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