Controllable synthesis and growth mechanism of {alpha}-Co(OH){sub 2} nanorods and nanoplates by a facile solution-phase route
- School of Science, Minzu University of China, Beijing 100081 (China)
A facile chemical precipitation route has been developed to control synthesis of {alpha}-cobalt hydroxide nanostructures with rod-like and plate-like morphologies. The {alpha}-Co(OH){sub 2} nanorods were achieved in large quantity when the experiments were carried out in the presence of a suitable shape-controlling reagent polyvinyl pyrrolidone (PVP), while the {alpha}-Co(OH){sub 2} nanoplates were obtained when the experiments were conducted in the absence of PVP, whilst keeping other experimental conditions constant. The chemical composition and morphologies of the as-prepared {alpha}-Co(OH){sub 2} nanoparticles were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The effect of polymer PVP on the morphologies of {alpha}-Co(OH){sub 2} nanoparticles were discussed in detail. The results indicated that PVP played a key role for the formation of {alpha}-Co(OH){sub 2} nanorods. The growth mechanism of the as-synthesized nanorods and nanoplates were discussed in detail based on the experimental results. A possible growth mechanism has been proposed to illustrate the growth of {alpha}-Co(OH){sub 2} nanorods. - Graphical abstract: A facile solution-phase route has been developed to synthesize {alpha}-Co(OH){sub 2} nanorods and nanoplates. The possible growth mechanism of nanorods and nanoplates was proposed. Highlights: Black-Right-Pointing-Pointer A facile controllable route was described for {alpha}-Co(OH){sub 2} nanowires and nanoplates. Black-Right-Pointing-Pointer The {alpha}-Co(OH){sub 2} nanowires were achieved in the presence of shape controller PVP. Black-Right-Pointing-Pointer The {alpha}-Co(OH){sub 2} nanoplates were obtained in the absence of shape controller PVP. Black-Right-Pointing-Pointer The shape controller PVP played a key role in the formation of {alpha}-Co(OH){sub 2} nanowires.
- OSTI ID:
- 21612831
- Journal Information:
- Journal of Solid State Chemistry, Vol. 184, Issue 12; Other Information: DOI: 10.1016/j.jssc.2011.10.027; PII: S0022-4596(11)00569-X; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHEMICAL COMPOSITION
COBALT HYDROXIDES
CONTROL
CRYSTAL STRUCTURE
MATERIALS
MORPHOLOGY
PARTICLES
PRECIPITATION
PVP
QUANTUM WIRES
SHAPE
SOLUTIONS
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
AMIDES
AZOLES
BLOOD SUBSTITUTES
COBALT COMPOUNDS
COHERENT SCATTERING
DIFFRACTION
DISPERSIONS
DRUGS
ELECTRON MICROSCOPY
HEMATOLOGIC AGENTS
HETEROCYCLIC COMPOUNDS
HOMOGENEOUS MIXTURES
HYDROGEN COMPOUNDS
HYDROXIDES
LACTAMS
MICROSCOPY
MIXTURES
NANOSTRUCTURES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
POLYMERS
POLYVINYLS
PYRROLES
PYRROLIDONES
SCATTERING
SEPARATION PROCESSES
TRANSITION ELEMENT COMPOUNDS