High-throughput continuous hydrothermal synthesis of nanomaterials (part II): unveiling the as-prepared CexZryYzO2-δ phase diagram

ACS Comb Sci. 2013 Sep 9;15(9):458-63. doi: 10.1021/co3001346. Epub 2013 Aug 20.

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).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cerium / chemistry*
  • High-Throughput Screening Assays*
  • Nanostructures / chemistry*
  • Oxygen / chemistry*
  • Temperature*
  • Yttrium / chemistry*
  • Zirconium / chemistry*

Substances

  • Cerium
  • Yttrium
  • Zirconium
  • Oxygen