ZrO₂ Nanopowders Prepared by Low‐Temperature Vapor‐Phase Hydrolysis

Abstract

ZrO 2 powder is prepared by low-temperature vapor-phase hydrolysis of ZrCl 4 . TG-DTA, XRD, Raman, BET, and TEM methods are used to investigate the particle size, phase composition, and agglomeration before and after heat treatment. The results show that the as-prepared ZrO 2 powder is characterized by large surface area (150 m 2 /g), fine grain size (5.8 nm), and weak agglomeration. Additionally, the as-prepared ZrO 2 powder shows predominantly tetragonal phase attributed to a grain size effect. This route is free of powder drying and calcination processes that are essential for wet chemical preparation, contributing to less agglomeration.

Aqueous Synthesis at 200°C of Sub‐10 Nanometer Yttria Tetragonally Stabilized Zirconia Using a Metal‐Ligand Approach

“…T here are a variety of ways to produce nanosized yttria tetragonally stabilized zirconia (Y‐TZP) powder including, but not limited to polymerization/sol–gel, coprecipitation, and hydrothermal synthesis 1–18 . Synthesis by polymerization or sol–gel methods typically uses a procedure similar to that of Pechini 1 .…”

Phase transformation in the surface region of zirconia and doped zirconia detected by UV Raman spectroscopy

“…[1][2][3][4][5][6] Zirconia exhibits three different phases: monoclinic (m-ZrO 2 ), tetragonal (tZrO 2 ) and cubic (c-ZrO 2 ). m-ZrO 2 is a stable polymorph of ZrO 2 at room temperature and ambient pressure and t-ZrO 2 is a metastable phase of ZrO 2 at low temperatures that changes into m-ZrO 2 at elevated temperatures.…”

Formation process of m-ZrO2 nanoparticles by the oil/water interface method combined with seeding technique

“…Recent research progress in zirconia has greatly enhanced the prospects for applying this material as catalyst, catalyst support, ceramic, engineering gemstone, fuel cell, pigment, automotive gas sensor, etc [5][6][7][8][9][10]. Especially, its varied chemical properties including oxidization, acidic and basic properties make zirconia an attractive catalyst or a catalyst support for a number of reactions [5,9,[11][12][13].…”