Sol gel synthesis of macroporous barium zirconate monoliths from ionic precursors via a phase separation route

被引：13

作者：

Guo, Xingzhong ^{[1
]}

Wang, Zichen ^{[1
]}

Song, Jie ^{[1
]}

Yang, Hui ^{[1
]}

机构：

[1] Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2017年 / 102卷

基金：

中国国家自然科学基金;

关键词：

Barium zirconate; Porous monolith; Sol-gel; Phase separation; WELL-DEFINED MACROPORES; FE-DOPED BAZRO3; MESOSTRUCTURED SKELETONS; OXYGEN VACANCIES; PORE STRUCTURE; SILICA; STABILITY; OXIDE;

D O I：

10.1016/j.jpcs.2016.11.012

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Monolithic macroporous barium zirconate derived from ionic precursors has been successfully prepared via a phase separation route in the presence of poly(ethylene oxide) (PEO) and propyleneoxide (PO). Poly(ethylene oxide) (PEO) acts as a phase separation inducer, while propyleneoxide (PO) acts as a gelation accelerant in the sol gel process. Appropriate choice of poly(ethylene oxide) (PEO) and propyleneoxide (PO) allows the production of continuous macroporous monolithic gel with a porosity of ca. 63% and a macropore size of 1.8 mu m Some BaCl2 recrystallizes in the dried gel, and subsequently tetragonal ZrO2 phase precipitates after heat-treated at 800 degrees C. The crystalline phase barium zirconate forms after heat treatment at 1100 degrees C in air, while the macroporous structure is preserved with a slight increase of porosity and a decrease of macropore size.

引用

页码：105 / 109

页数：5

共 30 条

[1] Monolithic periodic mesoporous silica with well-defined macropores [J].

Amatani, T ;

Nakanishi, K ;

Hirao, K ;

Kodaira, T .

CHEMISTRY OF MATERIALS, 2005, 17 (08) :2114-2119

[2] A-Site Cation Substitutions in Strained Y-Doped BaZrO3 Multilayer Films Leading to Fast Proton Transport Pathways [J].

Aruta, Carmela ;

Han, Chu ;

Zhou, Si ;

Cantoni, Claudia ;

Yang, Nan ;

Tebano, Antonello ;

Lee, Tien-Lin ;

Schlueter, Christoph ;

Bongiorno, Angelo .

JOURNAL OF PHYSICAL CHEMISTRY C, 2016, 120 (15) :8387-8391

[3] Surface Segregation Entropy of Protons and Oxygen Vacancies in BaZrO3 [J].

Bjorheim, Tor S. ;

Arrigoni, Marco ;

Saeed, Sarmad W. ;

Kotomin, Eugene ;

Maier, Joachim .

CHEMISTRY OF MATERIALS, 2016, 28 (05) :1363-1368

[4] Thermodynamic properties of neutral and charged oxygen vacancies in BaZrO3 based on first principles phonon calculations [J].

Bjorheim, Tor S. ;

Arrigoni, Marco ;

Gryaznov, Denis ;

Kotomin, Eugene ;

Maier, Joachim .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2015, 17 (32) :20765-20774

[5] Structure and thermodynamic stability of hydrogen interstitials in BaZrO3 perovskite oxide from density functional calculations [J].

Bjorketun, Marten E. ;

Sundell, Per G. ;

Wahnstrom, Goran .

FARADAY DISCUSSIONS, 2007, 134 :247-265

[6] Crystalline and narrow band gap semiconductor BaZrO3: Bi-Si synthesized by microwave-hydrothermal synthesis [J].

Borja-Urby, R. ;

Diaz-Torres, L. A. ;

Garcia-Martinez, I. ;

Bahena-Uribe, D. ;

Casillas, Gilberto ;

Ponce, A. ;

Jose-Yacaman, M. .

CATALYSIS TODAY, 2015, 250 :95-101

[7] Sonochemical synthesis of monodispersed perovskite barium zirconate (BaZrO3) by using an ethanol-water mixed solvent [J].

Charoonsuk, Thitirat ;

Vittayakorn, Wanwilai ;

Vittayakorn, Naratip ;

Seeharaj, Panpailin ;

Maensiri, Santi .

CERAMICS INTERNATIONAL, 2015, 41 :S87-S94

[8] The use of BaZrO3 crucibles in crystal growth of the high-T-c superconductors - Progress in crystal growth as well as in sample quality [J].

Erb, A ;

Walker, E ;

Flukiger, R .

PHYSICA C, 1996, 258 (1-2) :9-20

[9] Use of epoxides in the sol-gel synthesis of porous iron(III) oxide monoliths from Fe(III) salts [J].

Gash, AE ;

Tillotson, TM ;

Satcher, JH ;

Poco, JF ;

Hrubesh, LW ;

Simpson, RL .

CHEMISTRY OF MATERIALS, 2001, 13 (03) :999-1007

[10] Properties of yttrium-doped barium zirconate ceramics synthesized by the oxidant-peroxo method [J].

Goncalves, M. D. ;

Muccillo, R. .

CERAMICS INTERNATIONAL, 2014, 40 (01) :911-917

← 1 2 3 →