The origin of facet selectivity and alignment in anatase TiO 2 nanoparticles in electrolyte solutions: implications for oriented attachment in metal oxides
Atomic-to-mesoscale simulations were used to reveal the origin of oriented attachment between anatase TiO2 nanoparticles in aqueous HCl solutions. Analysis of the distance and pH dependence of interparticle interactions demonstrates that ion correlation forces are responsible for facet-specific attraction and rotation into lattice co-alignment at long-range. These forces give rise to a metastable solvent separated capture minimum on the disjoining pressure-distance curve, with the barrier to attachment largely due to steric hydration forces from structured intervening solvent.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1358520
- Report Number(s):
- PNNL-SA-113088; KC0302060
- Journal Information:
- Nanoscale, Vol. 8, Issue 47; ISSN 2040-3364
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
Similar Records
Adsorption and Reaction of Methanol on Anatase TiO2(101) Single Crystals and Faceted Nanoparticles
Single-Facet Dominant Anatase TiO2 (101) and (001) Model Catalysts to Elucidate the Active Sites for Alkanol Dehydration
Probing Acid–Base Properties of Anatase TiO2 Nanoparticles with Dominant {001} and {101} Facets Using Methanol Chemisorption and Surface Reactions
Journal Article
·
Thu Oct 03 00:00:00 EDT 2019
· Journal of Physical Chemistry C
·
OSTI ID:1358520
+4 more
Single-Facet Dominant Anatase TiO2 (101) and (001) Model Catalysts to Elucidate the Active Sites for Alkanol Dehydration
Journal Article
·
Thu Feb 20 00:00:00 EST 2020
· ACS Catalysis
·
OSTI ID:1358520
+6 more
Probing Acid–Base Properties of Anatase TiO2 Nanoparticles with Dominant {001} and {101} Facets Using Methanol Chemisorption and Surface Reactions
Journal Article
·
Wed Feb 10 00:00:00 EST 2021
· Journal of Physical Chemistry. C
·
OSTI ID:1358520
+3 more