Preparation and Characterization of Multielement Composite Oxide Nanomaterials Containing Ce, Zr, Y, and Yb via Continuous Hydrothermal Flow Synthesis

被引:0
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作者
Li, Qingyun [1 ]
Wang, Zihua [2 ]
Wang, Xuezhong [3 ]
机构
[1] Beijing Inst Technol, Sch Mat & Environm, Zhuhai 519088, Peoples R China
[2] South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510641, Peoples R China
[3] Beijing Inst Petrochem Technol, Sch Chem Engn, Beijing Key Lab Enze Biomass & Fine Chem, Pharmaceut & Crystallizat Syst Engn Grp, Beijing 102617, Peoples R China
基金
中国国家自然科学基金;
关键词
confined jet mixer; multielement composite oxide; continuous hydrothermal flow synthesis; oxygen storage capacity; ionic conductivity; HYDROGEN PERMEATION; REDOX PROPERTIES; NANOPARTICLES; PARTICLES; SIMULATION; ZIRCONIA;
D O I
10.3390/mi15010154
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The synthesis of multielement composite oxide nanomaterials containing Ce, Zr, Y, and Yb was investigated using a micro confined jet mixer reactor operated in continuous mode under supercritical water conditions. The obtained nanoparticles were characterized using ICP-AES, SEM-EDS, FTIR, Raman spectroscopy, XRD, and TEM. All samples exhibited a uniform particle shape and a narrow particle size distribution. An analysis of the d-spacing results using selected electron area diffraction (SAED) patterns confirmed the production of cubic-phase crystals. A BET test was employed to determine the specific surface area of the prepared nanoparticles. OSC and TPR techniques were utilized to characterize the oxygen storage capacity and reduction performance of the obtained samples, with an analysis conducted to determine how the different proportions of elements affected the performance of multielement mixed oxides. The ionic conductivity of multielement composite oxide was measured using alternating current impedance spectroscopy (EIS), and the impact of Y, Ce, and Yb on the electrolyte material's ionic conductivity was analyzed.
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页数:14
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