We demonstrate that graphite powder and multiwalled carbon nanotubes (MWCNTs) can be derivatised by 4-nitrobenzylamine (4-NBA) simply by stirring the graphite powder or MWCNTs in a solution of acetonitrile containing 10 mM 4-NBA. We propose that 4-NBA partially intercalates at localised edge-plane or edge-plane-like defect sites and this hypothesis with a range of experimental data provided by electrochemistry in both aqueous and nonaqueous media, electron microscopy and X-ray powder diffraction.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/cphc.200400403 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
An Insight into Chip and Surface Texture Shaping Under Finish Turning of Powder Steels Infiltrated with Tin Bronze.
Materials (Basel)
December 2024
Institute of Mechanical Engineering, University of Zielona Gora, 4 Prof. Z. Szafrana Street, 65-516 Zielona Gora, Poland.
The manufacturing of work parts made of powder (sintered) steels is currently widespread in industry, as it provides minimal processing allowances and high dimensional accuracy, as well as the required properties and unconventional chemical composition. At the same time, their low tensile or bending strength must be considered a serious disadvantage. In order to minimize these disadvantages, a number of strengthening technologies are used, among which is the infiltration of porous base materials with metal alloys.
View Article and Find Full Text PDFEffect of Asphalt Granulation on the Performance of Artificial Graphite Anode Materials for Lithium-Ion Batteries.
Materials (Basel)
December 2024
School of Physics and School of Materials Science and Engineering, Central South University, Changsha 410083, China.
In order to investigate the effects of the softening point, the addition ratio, and the median particle size (D50) of the asphalt on the performance of secondary particles of artificial graphite anode materials prepared by granulation, ten-kilogram orthogonal experiments were designed. D50 and powder orientation index (OI) value of the prepared secondary particles of artificial graphite anode materials were employed as evaluation index, and the results of the orthogonal experiments were subjected to polarity analysis, analysis of variance (ANOVA), and multiple linear regression analysis. It is demonstrated that the addition ratio of the asphalt exerts the most pronounced influence on D50 and powder OI value of secondary granular artificial graphite anode materials, followed by the softening point.
View Article and Find Full Text PDFLaser Upcycling of Hemoglobin Protein Biowaste into Engineered Graphene Aerogel Architectures for 3D Supercapacitors.
Adv Sci (Weinh)
December 2024
Princeton Materials Institute, Princeton University, Princeton, NJ, 08540, USA.
Graphene aerogels (GAs) with engineered architectures are a promising material for applications ranging from filtration to energy storage/conversion. However, current preparation approaches involve the combination of multiple intrinsically-different methodologies to achieve graphene-synthesis and architecture-engineering, complicating the entire procedure. Here, a novel approach to prepare GAs with engineered architectures based on the laser-upcycling of protein biowaste, hemoglobin, is introduced.
View Article and Find Full Text PDFPressure-Induced Assembly of Organic Phase-Change Materials Hybridized with Expanded Graphite and Carbon Nanotubes for Direct Solar Thermal Harvesting and Thermoelectric Conversion.
Nanomaterials (Basel)
December 2024
State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, China.
Direct harvesting of abundant solar thermal energy within organic phase-change materials (PCMs) has emerged as a promising way to overcome the intermittency of renewable solar energy and pursue high-efficiency heating-related applications. Organic PCMs, however, generally suffer from several common shortcomings including melting-induced leakage, poor solar absorption, and low thermal conductivity. Compounding organic PCMs with single-component carbon materials faces the difficulty in achieving optimized comprehensive performance enhancement.
View Article and Find Full Text PDFMechanism of a Novel Carrier Buffer in Arc Atomic Emission Spectroscopy.
ACS Meas Sci Au
December 2024
Kunming Natural Resources Comprehensive Survey Center of China Geological Survey, Kunming 650100, China.
The research, which was a component of a broader initiative, focused on synthesizing a pioneering carrier buffer particularly intended for arc atomic emission spectroscopy. By analyzing various evaporation curves and quickly refining the formula of the novel carrier buffer, a more comprehensive, selective, and expedited condition was established for fractionating the target elements from the sample using the single-electrode carrier distillation method, thereby increasing the sensitivity of atomic emission spectrum analysis. Furthermore, the buffer mechanism was thoroughly investigated, using data from field emission scanning electron microscopy (SEM), X-ray powder diffraction (XRD), and energy-dispersive spectrometry (EDS).
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!