skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Discovery of a ternary pseudobrookite phase in the earth-abundant Ti–Zn–O system

Journal Article · · Dalton Transactions
DOI:https://doi.org/10.1039/c5dt04145g· OSTI ID:1238274
 [1];  [2];  [3];  [4]
  1. Kyushu Univ., Fukuoka (Japan); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Colorado School of Mines, Golden, CO (United States); National Renewable Energy Lab. (NREL), Golden, CO (United States)
  3. Stanford Univ., CA (United States)
  4. Northwestern Univ., Evanston, IL (United States)

In this work, we combine theory with experiment in searching for “missing”, stable materials within the Zn–Ti–O chemical system, leading to the discovery of a new pseudobrookite phase, ZnxTi3–xO5–δ. This ternary system was chosen for (1) technological relevance, (2) earth abundance, and (3) the fact that many compounds in this system are predicted from enthalpies of formation to be borderline stable, suggesting an important role of entropic contributions in their stabilization and making this chemical system a perfect test bed for exploring the limits of theoretical predictions. The initial set of exploratory experimental syntheses, via sintering in evacuated ampoules and quenching, resulted in a single phase ZnxTi3–xO5–δ composition with x ≈ 0.6 and an almost stoichiometric oxygen content, as evaluated by X-ray fluorescence, energy dispersive spectroscopy, thermogravimetric analysis, and X-ray photoelectron spectroscopy. The theoretically calculated lowest energy crystal structure for the closest stoichiometric ZnTi5O10 composition matched that measured experimentally by synchrotron X-ray diffraction (allowing for differences attributable to cation disorder). The measured broad optical absorption, n-type electrical conductivity, and stability in acidic media are comparable to those of other ternary pseudobrookites and Ti–O Magnéli phases, suggesting comparable applicability as a robust electrode or catalyst support in electrochemical devices or water remediation. However, the new phase decomposes upon heating in air as it oxidizes. The success of the present approach to identify a “missing material” in an earth-abundant and applications-rich system suggests that future efforts to experimentally realize and theoretically confirm missing materials in this and similar systems are warranted, both scientifically and technologically.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Ministry of Education, Culture, Sports, Science and Technology (MEXT); National Science Foundation (NSF)
Grant/Contract Number:
AC36-08GO28308; AC02-06CH11357; DMR-1121262
OSTI ID:
1238274
Journal Information:
Dalton Transactions, Vol. 45, Issue 4; ISSN 1477-9226
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

References (40)

Compound Formation and Crystal Structure in the System ZnO-TiO2 journal October 1961
Generalized Gradient Approximation Made Simple journal October 1996
Pseudobrookite mit weitgehend geordneter Metallverteilung: CoTi2O5, MgTi2O5 und FeTi2O5 journal January 1983
Electrochemical Photolysis of Water at a Semiconductor Electrode journal July 1972
Novel mixed polyanions lithium-ion battery cathode materials predicted by high-throughput ab initio computations journal January 2011
Projector augmented-wave method journal December 1994
Prediction of A 2 B X 4 metal-chalcogenide compounds via first-principles thermodynamics journal July 2012
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Microfine Zinc Oxide is a Superior Sunscreen Ingredient to Microfine Titanium Dioxide journal January 2000
Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides journal September 1976
A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films journal October 1991
The continuing development of Magnéli phase titanium sub-oxides and Ebonex® electrodes journal September 2010
Energy Band Structure and Photocatalytic Property of Fe-doped Zn 2 TiO 4 Material journal December 2009
First Example of ZnO−TiO 2 Nanocomposites by Chemical Vapor Deposition:  Structure, Morphology, Composition, and Gas Sensing Performances journal November 2007
UV Irradiation Effect on the Electrical Properties of ZnO Thermal Control Coating Pigment journal July 1970
Special points for Brillouin-zone integrations journal June 1976
Transparent Conductive Zinc Oxide book January 2008
Crystal structure studies on trititanium pentoxide, Ti 3 O 5 journal August 1959
Aerogel processing of MTi2O5 (M=Mg, Mn, Fe, Co, Zn, Sn) compositions using single source precursors: synthesis, characterization and photocatalytic behavior journal March 2005
Crystallization and Phase-Transition Characteristics of Sol−Gel-Synthesized Zinc Titanates journal March 2011
Synthesis, Computed Stability, and Crystal Structure of a New Family of Inorganic Compounds: Carbonophosphates journal November 2012
Heterogeneous photocatalytic degradation of phenols in wastewater: A review on current status and developments journal October 2010
Untersuchungen an elektronenleitenden Oxidsystemen. XVI. Mischkristallbildung und Leitf�higkeit im System MgTi2O5?Ti3O5 journal March 1991
Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study journal January 1998
Prediction and accelerated laboratory discovery of previously unknown 18-electron ABX compounds journal March 2015
Increased Compressibility of Pseudobrookite-Type MgTi 2 O 5 Caused by Cation Disorder journal September 1997
Phase relationships and electrical properties of Ti 3 O 5 , CrTi 2 O 5 and the pseudobrookite-type systems Mg x Ti 3 –x O 5 and Li x Ti 3 –x O 5 journal January 1992
Structure and microwave dielectric properties of (Zn 1− x Ni x )TiO 3 ceramics journal May 2003
XPS characterization of surface and interfacial structure of sputtered TiNi films on Si substrate journal August 2005
TiO2 pigment technology: a review journal May 1992
The System zinc Oxide-Titanium Dioxide. zinc Orthotitanate and Solid Solutions with Titanium Dioxide journal February 1938
Fabrication of TiO2/ZnO composite nanofibers by electrospinning and their photocatalytic property journal June 2010
Phase Equilibria in the System ZnO-TiO2 journal March 1960
Theoretical Prediction and Experimental Realization of New Stable Inorganic Materials Using the Inverse Design Approach journal June 2013
Magnéli phases TinO2n−1 nanowires: Formation, optical, and transport properties journal May 2008
Correcting density functional theory for accurate predictions of compound enthalpies of formation: Fitted elemental-phase reference energies journal March 2012
Phase equilibria in the titanium-oxygen system journal June 1997
Energy Positions of Oxide Semiconductors and Photocatalysis with Iron Complex Oxides journal November 1996
Measurement of Sheet Resistivities with the Four-Point Probe journal May 1958
Accuracy of density functional theory in predicting formation energies of ternary oxides from binary oxides and its implication on phase stability journal April 2012

Similar Records

The chemistry of the thermal decomposition of pseudobrookite ferrous titanium oxides
Journal Article · Mon Oct 01 00:00:00 EDT 1990 · Journal of Solid State Chemistry; (USA) · OSTI ID:1238274

Hole antidoping of oxides
Journal Article · Mon Jun 08 00:00:00 EDT 2020 · Physical Review B · OSTI ID:1238274

The CaO-TiO{sub 2}-ZrO{sub 2} system at 1,200{degree}C and the solubilities of Hf and Gd in zirconolite
Technical Report · Fri Dec 01 00:00:00 EST 1995 · OSTI ID:1238274