The pore microstructures in two viscouse rayon-based ACF samples were characterized by nitrogen adsorption and HRTEM. For TEM, a two-dimensional fast Fourier transform (FFT) of the original TEM images was performed, and pores in different size ranges were extracted by the inverse FFT (IFFT) operation. The surface fractal dimensions of the samples were evaluated by using both N(2) adsorption and TEM image analysis. The results show that TEM can portray the shapes of the pore, and it can give a quantitative evaluation of surface irregularity that is consistent with nitrogen adsorption results.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1006/jcis.2002.8274 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Nitrogen-doped reduced graphene oxide for high efficient adsorption of methylene blue.
Front Chem
January 2025
Department of Energy Chemistry and Materials Engineering, Shanxi Institute of Energy, Jinzhong, China.
A highly efficient and widely applicable adsorbent for the removal of methylene blue (MB) was created using nitrogen-doped and reduced graphene oxide (NRGO). The effects of NRGO mass, pH, contact time, and the initial MB concentration on the adsorption properties of MB onto NRGO were investigated. The results showed that the adsorption behavior remained stable within the pH range of 2.
View Article and Find Full Text PDFPhotocatalytic upcycling of polylactic acid to alanine by sulfur vacancy-rich cadmium sulfide.
Nat Commun
January 2025
Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore, Singapore.
Photocatalytic conversion has emerged as a promising strategy for harnessing renewable solar energy in the valorization of plastic waste. However, research on the photocatalytic transformation of plastics into valuable nitrogen-containing chemicals remains limited. In this study, we present a visible-light-driven pathway for the conversion of polylactic acid (PLA) into alanine under mild conditions.
View Article and Find Full Text PDFDesign of bifunctional nitrogen-doped biochar with adsorption and catalytic oxidation capabilities for enhanced toluene emission control.
Environ Res
January 2025
Department of Environmental Engineering, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea. Electronic address:
Volatile organic compounds (VOCs), such as toluene, are hazardous air pollutants that pose significant health and environmental risks. This study addresses remediation of toluene by developing a bifunctional nitrogen-doped biochar (NDB) activated with sodium hydroxide (NaOH), aimed at reducing toluene emissions through both adsorption and catalytic oxidation. A series of NDB samples were prepared via NaOH activation and pyrolysis at varying temperatures to optimize their adsorption capacity and catalytic performance.
View Article and Find Full Text PDFSecondary Coordination Effects of Adjacent Metal Center in Metal-Nitrogen-Carbon Improve Scaling Relation of Oxygen Electrocatalysis.
J Phys Chem Lett
January 2025
Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China.
Heterogenous single-atom catalysts (SACs) are reminiscent of homogeneous catalysts because of the similarity of structural motif of active sites, showing the potential of using the advantage of homogeneous catalysts to tackle challenges in hetereogenous catalysis. In heterogeneous oxygen electrocatalysis, the homogeneity of adsorption patterns of reaction intermediates leads to scaling relationships that limit their activities. In contrast, homogeneous catalysts can circumvent such limits by selectively altering the adsorption of intermediates through secondary coordination effects (SCEs).
View Article and Find Full Text PDFEngineering Planar Crystallinity in Nitrogen-Vacancy-Incorporated Carbon Nitride for Efficient Photoredox Catalysis.
ACS Appl Mater Interfaces
January 2025
Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, People's Republic of China.
The concurrent evolution of value-added benzimidazole compounds and hydrogen within the domain of chemical synthesis is of paramount importance. The utilization of photocatalysis enhances both the efficiency and environmental benignity of the synthetic process. However, it is profoundly challenging within a photocatalytic system to simultaneously augment the number of active sites and the internal transport rate of photogenerated charge carriers.
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!