Poly-copper tetraaminophthalocyanine (CuTAPc) nanowires and nanotubes were successfully fabricated on porous alumina templates by electropolymerization and characterized using field-emission scanning electron microscopy (FE-SEM), energy-dispersive x-ray spectroscopy (EDX), transmission electron microscopy (TEM) and Raman microscopy. The lengths of these nanostructures could be controlled by the number of cycles applied and the monomer concentrations, while their diameters are confined by the pore size of the template. The product of electropolymerization (whether as nanowires or nanotubes) is a function of the monomer concentrations. The morphology of electropolymerized nanowires was found to be sensitive to the changes in scan rates and monomer concentrations. These organometallic nanostructures may have applications in micro-electronics, chemical sensing, and catalysis.
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http://dx.doi.org/10.1088/0957-4484/19/14/145606 | DOI Listing |
Discov Nano
December 2024
IMDEA Materials Institute, C/Eric Kandel 2, 28906, Getafe, Madrid, Spain.
New materials for electrical conductors, energy storage, thermal management, and structural elements are required for increased electrification and non-fossil fuel use in transport. Appropriately assembled as macrostructures, nanomaterials can fill these gaps. Here, we critically review the materials science challenges to bridge the scale between the nanomaterials and the large-area components required for applications.
View Article and Find Full Text PDFNanomaterials (Basel)
November 2024
Instituto de Ciencia de Materiales Nicolás Cabrera, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
This study explores the hydrogen generation potential via water-splitting reactions under UV-vis radiation by using a synergistic assembly of ZnO nanoparticles integrated with MoS, single-walled carbon nanotubes (SWNTs), and crystalline silicon nanowires (SiNWs) to create the MoS-SiNWs-SWNTs@ZnONPs nanocomposites. A comparative analysis of MoS synthesized through chemical and physical exfoliation methods revealed that the chemically exfoliated MoS exhibited superior performance, thereby being selected for all subsequent measurements. The nanostructured materials demonstrated exceptional surface characteristics, with specific surface areas exceeding 300 m g.
View Article and Find Full Text PDFEnviron Res
December 2024
U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, PA, 15236-0940, USA.
Cadmium sulfide is widely employed in environmental catalysis due to its excellent catalytic behaviors. However, the inherent toxicity and leaching risk of CdS-based catalyst presents significant challenges for practical applications. This study explored the incorporation of CdS nanowires on the nitrogen-doped multi-wall carbon tubes (N-MWCNTs) substrate to minimize the leaching rate and mitigate the bio-toxicity by regulating the electron transfer process.
View Article and Find Full Text PDFChem Commun (Camb)
December 2024
Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China.
With the development of hydrogen energy, there has been increasing attention toward fuel cells and water electrolysis. Among them, the zero-gap membrane electrode assembly (MEA) serves as an important triple-phase reaction site that determines the performance and efficiency of the reaction system. The development of efficient and durable MEAs plays a crucial role in the development of hydrogen energy.
View Article and Find Full Text PDFNanoscale
December 2024
Department of Chemistry, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay Rd., Kowloon, Hong Kong (SAR) 999077, China.
Quantum information science has garnered significant attention due to its potential in solving problems that are beyond the capabilities of classical computations based on integrated circuits. At the heart of quantum information science is the quantum bit or qubit, which is used to carry information. Achieving large-scale and high-fidelity quantum bits requires the optimization of materials with trap-free characteristics and long coherence times.
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