Size Adjustment of Zinc Oxide Nanostructures by Ultrasmall TiO2 Nanoparticles
Geovanne Lemos de Assis, Artur Luis Hennemann, Helton Pereira Nogueira, Robson Raphael Guimarães, Kalil Cristhian Figueiredo Toledo, Koiti Araki
TL;DR
This study shows how adding tiny titanium dioxide particles can shrink zinc oxide nanorods, creating new nanostructures with potential for size-dependent applications.
Contribution
A novel method to reduce ZnO nanorod size using am-TiO2 NPs through Zn(II) ion adsorption is introduced.
Findings
am-TiO2 NPs significantly reduced the size of nr-ZnO through Zn(II) ion adsorption.
Core@shell xZT materials with varying Zn/Ti molar ratios were successfully synthesized.
Changes in size and structure were confirmed using FTIR, UV–vis, DLS, XRD, and TEM.
Abstract
The interaction of positively charged ZnO nanorods (nr-ZnO) with negatively charged ultrasmall amorphous titanium dioxide (am-TiO2) nanoparticles (NPs) induced a decrease in the nr-ZnO particle size while forming nanostructured core@shell xZT materials (Zn/Ti molar ratios of 16, 8, 4, 2, and 1). Such an unexpected outcome was assigned to the high affinity and Zn(II) ion adsorption capacity of am-TiO2 NP, as confirmed by the amount of Zn(II) ion in equilibrium in solution with am-TiO2 determined by ICP-OES and the respective adsorption isotherm profile. The changes in size, morphology, and crystallinity compared to pure nr-ZnO were monitored by FTIR and UV–vis spectroscopy, dynamic light scattering (DLS), and X-ray diffractometry (XRD) and confirmed by transmission electron microscopy (TEM), suggesting a promising strategy to explore size-dependent nanoscale phenomena in ZnO-based…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsZnO doping and properties · TiO2 Photocatalysis and Solar Cells · Nanoparticles: synthesis and applications