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High-Throughput Continuous Hydrothermal Synthesis of Nanomaterials (Part II): Unveiling the As-Prepared Ce x Zr y Y z O 2−δ Phase Diagram

DOI: 10.1021/co3001346 DOI Help

Authors: Raul Quesada (University College London) , Xiaole Weng (Zhejiang University) , Geoffrey Hyett (University College London) , Robin J. H. Clark (University College London) , Xue Z. Wang (University of Leeds) , Jawwad Darr (University College London)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Acs Combinatorial Science , VOL 15 , PAGES 458 - 463

State: Published (Approved)
Published: September 2013

Abstract: High-throughput continuous hydrothermal flow synthesis was used to manufacture 66 unique nanostructured oxide samples in the Ce-Zr-Y-O system. This synthesis approach resulted in a significant increase in throughput compared to that of conventional batch or continuous hydrothermal synthesis methods. The as-prepared library samples were placed into a wellplate for both automated high-throughput powder X-ray diffraction and Raman spectroscopy data collection which allowed comprehensive structural characterization and phase mapping. The data suggested that a continuous cubic-like phase field connects all three Ce-Zr-O Ce-Y-O, and Y-Zr-O binary systems together with a smooth and steady transition between the structures of neighboring compositions. The continuous hydrothermal process led to as-prepared crystallite sizes in the range of 2-7 nm (as determined by using the Scherrer equation).

Journal Keywords: High-throughput; hydrothermal synthesis; phase diagram; Raman spectroscopy; X-ray diffraction

Subject Areas: Chemistry

Instruments: I11-High Resolution Powder Diffraction