title: Facet-dependent properties of polyhedral nanocrystals.
abstract: Syntheses of metal and oxide nanocrystals with cubic crystal structures and well-controlled polyhedral morphologies such as cubic, octahedral, and rhombic dodecahedral shapes exposing, respectively, {100}, {111}, and {110} surfaces enable a more accurate determination of their facet-dependent properties. So far molecular adsorption, photocatalytic, organocatalytic, and electrical conductivity properties have been demonstrated to be surface-related or facet-dependent. Chemical etching and metal nanoparticle deposition can also be face-selective. Examples of these surface properties are presented. In general, ionic solids such as Cu2O nanocrystals exhibit more sharply different surface properties than those seen in metal nanoparticles. A better understanding of these facet-dependent properties is necessary to prepare nanomaterials with enhanced properties such as their catalytic activities.
authors.affiliation: Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan. hyhuang@mx.nthu.edu.tw.
authors.forename: Michael H
authors.initials: MH
authors.lastname: Huang
authors.forename: Sourav
authors.initials: S
authors.lastname: Rej
authors.forename: Shih-Chen
authors.initials: SC
authors.lastname: Hsu