Determining the maximum lanthanum incorporation in the fluorite structure of La-doped ceria nanocubes for enhanced redox ability

被引：23

作者：

Loche, Danilo ^{[1
]}

Morgan, Lucy M. ^{[1
]}

Casu, Alberto ^{[2
]}

Mountjoy, Gavin ^{[1
]}

O'Regan, Colm ^{[2
]}

Corrias, Anna ^{[1
]}

Falqui, Andrea ^{[2
]}

机构：

[1] Univ Kent, Sch Phys Sci, Ingram Bldg, Canterbury CT2 7NH, Kent, England

[2] King Abdullah Univ Sci & Technol, Biol & Environm Sci & Engn Div, Thuwal 239556900, Saudi Arabia

来源：

RSC ADVANCES | 2019年 / 9卷 / 12期

基金：

英国工程与自然科学研究理事会;

关键词：

NANOCRYSTALLINE CERIA; NANOPARTICLES; SIZE;

D O I：

10.1039/c8ra09766f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ceria nanocubes have been doped with increasing amounts of lanthanum to enhance their redox ability. X-ray diffraction and transmission electron microscopy techniques provide a consistent picture indicating that there is an upper limit to the lanthanum that can be incorporated in the fluorite structure of ceria nanocubes, which is close to 7.5 mol% La. This limited loading is nevertheless able to produce a significant enhancement of the ceria redox ability as evidenced by use of X-ray absorption spectroscopy to determine the Ce3+/Ce4+ ratio in samples submitted to a degassing treatment at room temperature.

引用

页码：6745 / 6751

页数：7

共 26 条

[1]

[Anonymous], ANGEW CHEM

[2] The effect of Eu doping on the growth, structure and red-ox activity of ceria nanocubes [J].

Bezkrovnyi, Oleksii ;

Malecka, Malgorzata A. ;

Lisiecki, Radoslaw ;

Ostroushko, Volodymyr ;

Thomas, Andrew G. ;

Gorantla, Sandeep ;

Kepinski, Leszek .

CRYSTENGCOMM, 2018, 20 (12) :1698-1704

[3] The water gas shift reaction over Pt-CeO2 nanoparticles confined within mesoporous SBA-16 [J].

Carta, D. ;

Montini, T. ;

Casula, M. F. ;

Monai, M. ;

Bullita, S. ;

Fornasiero, P. ;

Corrias, A. .

JOURNAL OF MATERIALS CHEMISTRY A, 2017, 5 (37) :20024-20034

[4] Electron localization determines defect formation on ceria substrates [J].

Esch, F ;

Fabris, S ;

Zhou, L ;

Montini, T ;

Africh, C ;

Fornasiero, P ;

Comelli, G ;

Rosei, R .

SCIENCE, 2005, 309 (5735) :752-755

[5] Converting ceria polyhedral nanoparticles into single-crystal nanospheres [J].

Feng, Xiangdong ;

Sayle, Dean C. ;

Wang, Zhong Lin ;

Paras, M. Sharon ;

Santora, Brian ;

Sutorik, Anthony C. ;

Sayle, Thi X. T. ;

Yang, Yi ;

Ding, Yong ;

Wang, Xudong ;

Her, Yie-Shein .

SCIENCE, 2006, 312 (5779) :1504-1508

[6] Enhanced Hydroxyl Radical Scavenging Activity by Doping Lanthanum in Ceria Nanocubes [J].

Fernandez-Garcia, Susana ;

Jiang, Lei ;

Tinoco, Miguel ;

Hungria, Ana B. ;

Han, Juan ;

Blanco, Ginesa ;

Calvino, Jose J. ;

Chen, Xiaowei .

JOURNAL OF PHYSICAL CHEMISTRY C, 2016, 120 (03) :1891-1901

[7] Incorporation of Sb5+ into CeO2: local structural distortion of the fluorite structure from a pentavalent substituent [J].

Hiley, Craig I. ;

Fisher, Janet M. ;

Kashtiban, Reza J. ;

Cibin, Giannantonio ;

Thompsett, David ;

Walton, Richard I. .

DALTON TRANSACTIONS, 2018, 47 (29) :9693-9700

[8] Enhanced catalytic properties of La-doped CeO2 nanopowders synthesized by hydrolyzing and oxidizing Ce46La5C49 alloys [J].

Hou, Xueling ;

Lu, Qianqian ;

Wang, Xiaochen .

JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES, 2017, 2 (01) :41-44

[9] Combustion synthesis of nanocrystalline ceria (CeO2) powders by a dry route [J].

Hwang, Chyi-Ching ;

Huang, Ting-Han ;

Tsai, Jih-Sheng ;

Lin, Cheng-Shiung ;

Peng, Cheng-Hsiung .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2006, 132 (03) :229-238

[10] Improved Oxidase Mimetic Activity by Praseodymium Incorporation into Ceria Nanocubes [J].

Jiang, Lei ;

Fernandez-Garcia, Susana ;

Tinoco, Miguel ;

Yan, Zhaoxia ;

Xue, Qi ;

Blanco, Ginesa ;

Calvino, Jose J. ;

Hungria, Ana B. ;

Chen, Xiaowei .

ACS APPLIED MATERIALS & INTERFACES, 2017, 9 (22) :18595-18608

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