Journal ArticleDOI
Aqueous Synthesis of Mn- and Co-Doped ZnO Nanorods
TLDR
In this article, the optical and magnetic properties of Mn-and Co-doped ZnO nanorods fabricated via a simple one-step aqueous-based chemical method were reported.Abstract:
Herein, we report the optical and magnetic properties of Mn- and Co-doped ZnO nanorods fabricated via a simple one-step aqueous-based chemical method. Interestingly, SEM results reveal a uniform size distribution of the nanorods throughout the substrate. The UV emission band of doped ZnO nanorods reveals a red shift from 382 to 384.5 nm, indicating a band-edge bending due to the dopants. The defect-related band centered at 600 nm is suppressed (ID/IUV = 1−0.35) considerably in doped nanorods, revealing the quenching of surface defects present in the nanostructures. XRD, XPS, Raman spectra, and EDS data demonstrate a successful incorporation of TM dopants in ZnO nanorods. Localized SAED patterns taken using nanoprobe size reveals that the nanorods are single crystals, grown along the c-axis [0002] direction. A systematic evalution of the enhancement in ferromagnetism (M = 0.15 × 10−2 to 1.3 × 10−2 emu/g) is found in modified doped ZnO nanorods.read more
Citations
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Journal ArticleDOI
Doped quantum dots for chemo/biosensing and bioimaging
Peng Wu,Xiu-Ping Yan +1 more
TL;DR: The lifetime of dopant emission from transition-metal ion or lanthanide ion-doped QDs is generally longer than that of the bandgap or defect-related emission of host, and that of biological Background fluorescence, providing great opportunities to eliminate background fluorescence for biosensing and bioimaging.
Journal ArticleDOI
ZnO nanoparticles applied to bioimaging and drug delivery.
TL;DR: The recent exciting progress on the biomedical applications of ZnO‐based nanomaterials is reviewed here, along with discussions on the advantages and limitations of these advanced materials and suggestions for improving methods.
Journal ArticleDOI
Enhanced photocatalytic activity of Co doped ZnO nanodisks and nanorods prepared by a facile wet chemical method
TL;DR: The results showed that Co doped ZnO nanodisks and nanorods exhibit highly enhanced photocatalytic activity, as compared to pure Zn O nanod risks and nanors, due to the combined effects of enhanced surface area and improved charge separation efficiency due to optimal Co doping.
Journal ArticleDOI
Size Dependence of Defect-Induced Room Temperature Ferromagnetism in Undoped ZnO Nanoparticles
TL;DR: In this paper, the intrinsic room-temperature ferromagnetic properties in undoped ZnO nanoparticles with different sizes synthesized by a wet chemical method at different temperatures were investigated.
Journal ArticleDOI
Synthesis of ZnFe2O4/ZnO nanocomposites immobilized on graphene with enhanced photocatalytic activity under solar light irradiation
TL;DR: Magnetically recyclable ZnFe 2 O 4 /ZnO nanocomposites immobilized on different content of graphene with favorable photocatalytic activity under solar light irradiation were successfully prepared on the basis of an ultrasound aided solution method as discussed by the authors.
References
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Journal ArticleDOI
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Journal ArticleDOI
Zener Model Description of Ferromagnetism in Zinc-Blende Magnetic Semiconductors
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Journal ArticleDOI
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Journal ArticleDOI
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TL;DR: Single-nanowire photoluminescent, electrical transport and electroluminescence measurements show the unique photonic and electronic properties of these nanowire superlattices, and suggest potential applications ranging from nano-barcodes to polarized nanoscale LEDs.