Cobalt-Assisted Morphology and Assembly Control of Co-Doped ZnO Nanoparticles
AbstractThe morphology of metal oxide nanostructures influences the response of the materials in a given application. In addition to changing the composition, doping can also modify the morphology of a host nanomaterial. Herein, we determine the effect of dopant concentration, reaction temperature, and reaction time on the morphology and assembly of CoxZn1−xO nanoparticles synthesized through non-aqueous sol-gel in benzyl alcohol. With the increase of the atom % of cobalt incorporated from 0 to 15, the shape of the nanoparticles changes from near spherical, to irregular, and finally to triangular. The tendency of the particles to assemble increases in the same direction, with Co0.05Zn0.95O consisting of non-assembled particles, whereas Co0.15Zn0.85O consists of triangular nanoparticles forming spherical structures. The morphology and assembly process are also sensitive to the reaction temperature. The assembly process is found to occur during the nucleation or the early stages of particle growth. The cobalt ions promote the change in the shape during the growth stage of the nanoparticles. View Full-Text
- Supplementary File 1:
PDF-Document (PDF, 259 KB)
Share & Cite This Article
Han, X.; Wahl, S.; Russo, P.A.; Pinna, N. Cobalt-Assisted Morphology and Assembly Control of Co-Doped ZnO Nanoparticles. Nanomaterials 2018, 8, 249.
Han X, Wahl S, Russo PA, Pinna N. Cobalt-Assisted Morphology and Assembly Control of Co-Doped ZnO Nanoparticles. Nanomaterials. 2018; 8(4):249.Chicago/Turabian Style
Han, Xianying; Wahl, Sebastian; Russo, Patrícia A.; Pinna, Nicola. 2018. "Cobalt-Assisted Morphology and Assembly Control of Co-Doped ZnO Nanoparticles." Nanomaterials 8, no. 4: 249.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.