798495 Sigma-Aldrich

Titanium dioxide

22 nm, nanocrystalline colloidal paste for transparent film, >95% (anatase (XRD))

Synonym: Nanocrystalline TiO2, TiO2 paste, Titania paste

  • Linear Formula TiO2



Related Categories 22: Ti, 3D Printing Materials for Research and Development, Alternative Energy, Conductive Inks for 3D Printing, Inks for Printing Applications,
description   Metals purity: ≤ 11 ppm Fe, Na and K (ICP)
  Rheology at shear rate: 0.428 at 1000cm-1 (Pa.s)
  Rheology at shear rate: 1850 at 0.01 cm-1 (Pa.s)
assay   >95% (anatase (XRD))
form   paste (nanocrystalline colloid)
concentration   16 wt. %
particle size   22 nm
  22-25 nm (BET)
pore size   21-22 nm average pore size (BET)
  60-65 % porosity (BET)
surface area   spec. surface area 65-75 m2/g (BET)
pH   <1
conductivity   96.4 mS/cm



25 g in poly bottle


Titanium dioxide (TiO2) is used in the creation of photoelectrodes for the production of dye sensitized perovskite and other solid state solar cells. Our TiO2 pastes allow deposition of titania films with large surface to volume ratio. Select transparent TiO2 paste for applications that require a transparent sintered titania film and use opaque TiO2 paste for applications that do not require transparency. The opaque TiO2 paste contains larger scattering TiO2 particles.

Safety & Documentation

Safety Information

UN 3260 8 / PGII


Certificate of Analysis

Certificate of Origin

Protocols & Articles


3D Printing of Carbon Fiber-Reinforced Composites

3D printing is a type of additive manufacturing that can be used to rapidly fabricate components with highly customizable geometries, most typically using a layer-by-layer fabrication process. 3D pri...
Zhenyu Bo* (Ph.D Candidate at Northwestern University) and Jia Choi*, PhD, Product Manager

*Materials Science Product Management Team, MilliporeSigma, Milwaukee, WI.
Keywords: Deposition, Nanomaterials, Nanotubes

Few Monolayer Atomic Layer Deposition (ALD) on Surfaces and Interfaces for Energy Applications

Department of Mechanical Engineering and Materials Science, One Brookings Drive, Washington University in St. Louis, St. Louis, MO 63130 *Email:
Keywords: Atomic layer deposition, Catalysis, Chemical reactions, Degradations, Dehydrogenation, Deposition, Hydrogenations, Ion Exchange, Ligands, Magnetic resonance spectroscopy, Materials Science, Nanomaterials, Oxidations, Photovoltaics, Precipitation, Recombination, Reductions, Renewable energy, Separation, Solar cells, Thin film deposition

Nanoparticle-based Zinc Oxide Electron Transport Layers for Printed Organic Photodetectors

Gerardo Hernandez-Sosa,1,2* Ralph Eckstein,1,2 Tobias Rödlmeier,1,2 Uli Lemmer1,2,3 1Lichttechnisches Institut, Karlsruher Institut für Technologie, Engesserstrasse 13, 76131 Karlsruhe, Germany 2Inno...
Gerardo Hernandez-Sosa*, Ralph Eckstein, Tobias Rödlmeier, Uli Lemmer
Material Matters, 2016, 11.2
Keywords: Deposition, Electronics, Positron Emission Tomography, Recombination, Reductions, Solar cells, Thin film deposition

Organic and Hybrid Electronics in Optical Analytical Applications

1Microelectronics Research Center and Department of Electrical & Computer Engineering, Iowa State University, Ames, IA, 50011, USA 2Department of Physics & Astronomy, Iowa State University, Ames, IA,...
Keywords: Absorption, Cardiovascular, Catalysis, Chromatin immunoprecipitation, Diagnostic, Electronics, Evaporation, Infrared spectroscopy, Materials Science, Oxidations, Recombination, Semiconductor, Sol-gel, Solar cells

Recent Advances in Hybrid Halide Perovskites-based Solar Cells

Kuppuswamy Kalyanasundaram, Shaik. M. Zakeeruddin, Michaël Grätzel* Laboratory for Photonics and Interfaces (LPI) Swiss Federal Institute of Technology at Lausanne (EPFL) 1015 Lausanne, Switzerland *...
Kuppuswamy Kalyanasundaram, Shaik. M. Zakeeruddin, Michaël Grätzel
Material Matters, 2016, 11.1, 3
Keywords: Absorption, Atomic layer deposition, Capillary electrophoresis, Degradations, Deposition, Diffusion, Environmental, Infrared spectroscopy, Nanomaterials, Nanotubes, Nucleic acid annealing, Recombination, Semiconductor, Separation, Sol-gel, Solar cells, Solvents, Spectroscopy, Spin coating, Substitutions

Thiolated gold nanoclusters: A new class of photosensitizers

Kevin Stamplecoskie, Yong-Siou Chen, Prashant V. Kamat* Radiation Laboratory and Department of Chemistry and Biochemistry University of Notre Dame, Notre Dame, Indiana, USA *Email:
Keywords: Absorption, Biochemistry, Diffraction, Ligands, Nanomaterials, Oxidations, Photovoltaics, Reductions, Solar cells, Spectroscopy, X-Ray diffraction

Titania Nanotubes: Synthesis and Applications

Eugen Panaitescu1 and Latika Menon2 Department of Physics Northeastern University, Boston, MA 02115 USA Email:,
Keywords: Adsorption, Agriculture, Antimicrobials, Apoptosis, Automotive, Calorimetry, Cosmetics, Degradations, Deposition, Diffusion, Electrochemical analysis, Environmental, Filtration, Melting, Nanotubes, Oxidations, Photovoltaics, Precipitation, Recombination, Redox Reactions, Reductions, Semiconductor, Separation, Sol-gel, Solar cells, Solvents

Ultra-High Efficiency Perovskite-Perovskite Tandem Solar Cells

Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, Colorado 80401, USA *Email:
Zhen Li and Kai Zhu*
Material Matters, 2018, 13.1
Keywords: Absorption, Adhesion, Degradations, Deposition, Diffraction, Evaporation, Infrared spectroscopy, Nanotubes, Nucleic acid annealing, Oxidations, Photovoltaics, Recombination, Renewable energy, Semiconductor, Solar cells, Solvents, Ultraviolet-Visible spectroscopy, X-Ray diffraction

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