We report the bottom-up assembly of an atomic-scale building block, which consists of four Co(3+) cations, two Co(2+) cations, and eight O(2-) anions, for generating one-dimensional Co(3)O(4) nanostructures with diameters ranging from 0.5 to 3 nm. Controlled experiments were carried out and the growth mechanism of the Co(3)O(4) nanowires was investigated. The effects of a single cation defect on the epitaxial growth of the one-dimensional nanostructures were investigated. We proposed a self-rectifying growth mechanism on the basis of direct experimental observations. This mechanism will help us to understand synthesized crystals usually exhibiting homogeneous composition and uniform morphology, though the existence of defects is inevitable in the growth process.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1088/0957-4484/21/33/335605 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Zr doping CoO nanowires mediated adsorption of chloridion for efficient natural seawater electrolysis.
J Colloid Interface Sci
December 2024
School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China. Electronic address:
Article Synopsis
- Natural seawater electrolysis is a promising method for producing hydrogen, but it faces challenges with long-term instability due to chloride corrosion.
- A new material, Zr doped CoO, shows strong performance, requiring a low overpotential of 570 mV and demonstrating minimal decay (0.78%) over 500 hours of operation.
- A novel membrane electrode setup with a self-developed anion exchange membrane converts the produced hydrogen into ammonia for easier storage, while theoretical calculations reveal how Zr enhances the material's stability and protects it from chloride damage.
Constructing CoO Nanowire@NiCoO Nanosheet Hierarchical Array as Electrode Material for High-Performance Supercapacitor.
Nanomaterials (Basel)
October 2024
School of Chemistry and Materials Engineering, Huainan Normal University, Huainan 232038, China.
The CoO nanowire@NiCoO nanosheet hierarchical array was constructed on Ni foam using hydrothermal and annealing approaches in turn, from which a NiCoO nanosheet could self-assemble on the CoO nanowire. The structure and morphology of the CoO nanowire@NiCoO nanosheet hierarchical array were characterized via XRD, EDS, SEM, and FESEM, respectively. The electrochemical performance of the composite array was measured via a cyclic voltammetry curve, galvanostatic current charge-discharge, charge-discharge cycle, and electrochemical impedance and then compared with the CoO nanowire.
View Article and Find Full Text PDFConstruction of Ternary ZnCuCoO Spinel Structure on Nickel Foam: A Comprehensive Theoretical and Experimental Study from Single to Ternary Metal Oxides for High-Energy-Density Asymmetric Supercapacitor Application.
Small
November 2024
Department of Mechanical Engineering, Chungbuk National University, Cheongju, 28644, Republic of Korea.
Developing nanostructured multi-transition metal-based spinel architectures represents a strategic approach for boosting the energy density of supercapacitors while preserving high power density. Here, the influence of incorporating Zn and Cu into CoO spinel systems on supercapacitor performance is investigated by synthesizing single (ZnO, CuO, CoO), binary (ZnCoO, CuCoO), and ternary (ZnCuCoO) oxides on nickel foam substrates. Theoretical and experimental analyses highlight that the flower-like structures of ZnCuCoO, comprising nanowires and nanoribbons, effectively reduced transport barriers and enhanced ion adsorption, thereby improving electron/ion reaction kinetics.
View Article and Find Full Text PDFBoosting Electrochemical Nitrate Reduction to Ammonia by Fe Doped CuO/CoO Nanosheet/Nanowire Heterostructures.
Chemphyschem
December 2024
Collaborative Innovation Centre for Green Chemical Manufacturing and Accurate Detection, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, China.
The electrochemical nitrate reduction reaction (NO RR) is a novel green method for ammonia synthesis. The development of outstanding NO RR performance is based on reasonable catalyst. Metal oxides have garnered significant attention due to their exceptional electrical conductivity and catalytic properties.
View Article and Find Full Text PDFNanowire-assisted electroporation via inducing cell destruction for inhibiting formation of VBNC bacteria: Comparison with chlorination.
Water Res
July 2024
College of Environment and Climate, Guangdong Provincial Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, PR China. Electronic address:
The induction of viable but nonculturable (VBNC) bacteria with cellular integrity and low metabolic activity by chemical disinfection causes a significant underestimation of potential microbiological risks in drinking water. Herein, a physical CoO nanowire-assisted electroporation (NW-EP) was developed to induce cell damage via the locally enhanced electric field over nanowire tips, potentially achieving effective inhibition of VBNC cells as compared with chemical chlorination (Cl). NW-EP enabled over 5-log removal of culturable cell for various G+/G- bacteria under voltage of 1.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!