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Structure Matters: Tailored Graphitization of Carbon Dots Enhances Photocatalytic Performance.
ACS Nano
January 2025
Department of Chemical and Pharmaceutical Sciences, INSTM UdR Trieste, University of Trieste, Via Licio Giorgieri 1, 34127 Trieste, Italy.
The chemical structure and photoredox properties of carbon dots () are not yet fully understood. However, it has been reported that, by carefully choosing the starting materials and tuning their synthesis conditions, it is possible to obtain with different chemical structures and therefore different photocatalytic performance. For this work, a family of different was synthesized in Milli-Q water a microwave-assisted protocol, using citric acid and urea as precursors.
View Article and Find Full Text PDFModeling of parameters affecting the removal of chromium using polysulfone/graphene oxide membrane via response surface methodology.
Environ Monit Assess
January 2025
School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, China.
In this study, an efficient membrane composed of polysulfone and graphene oxide was developed and evaluated for its efficacy in chromium adsorption. Characterization of the synthesized membrane involved comprehensive analyses including scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA) and Fourier-transform infrared spectroscopy (FTIR) to assess its structural properties. Subsequently, the membrane's performance in removing chromium from aqueous solutions was scrutinized, considering key operational parameters.
View Article and Find Full Text PDFA functional helix shuffled variant of the B domain of Staphylococcus aureus.
Protein Sci
February 2025
Institute of Physics, Biophysics, Martin-Luther-University Halle-Wittenberg, Halle (Saale), Germany.
The B domain of protein A is a biotechnologically important three-helix bundle protein. It binds the Fc fragment of antibodies with helix 1/2 and the Fab region with helix 2/3. Here we designed a helix shuffled variant by changing the connectivity of the helices, in order to redesign the helix bundle, yielding altered helix-loop-helix properties.
View Article and Find Full Text PDFComposition of soil fungal communities and microbial activity along an elevational gradient in Mt. Jiri, Republic of Korea.
PeerJ
January 2025
Department of Environmental Engineering, Konkuk University, Seoul, Republic of Korea.
Approximately 64% of the Republic of Korea comprises mountainous areas, which as cold and high-altitude regions are gravely affected by climate change. Within the mountainous and the alpine-subalpine ecosystems, microbial communities play a pivotal role in biogeochemical cycling and partly regulate climate change through such cycles. We investigated the composition and function of microbial communities, with a focus on fungal communities, in Republic of Korea's second tallest mountain, Mt.
View Article and Find Full Text PDFPreparation, structural property, and antioxidant activities of a novel pectin polysaccharide from the flowers of Linn.
Front Nutr
January 2025
Prefabricated Dish Industry Development Research Institute, Zhejiang Dong Fang Polytechnic, Wenzhou, China.
Introduction: Oxidative stress, triggered by an imbalance between reactive oxygen species (ROS) production and cellular antioxidant defense mechanisms, is implicated in various pathological conditions. Plant-derived polysaccharides have gained significant attention as potential natural antioxidants due to their biocompatibility, biodegradability, and structural versatility.
Methods: This study focuses on the purification, structural characterization, and antioxidant activities of a novel pectin polysaccharide (HFPS) isolated from the flowers of Linn.
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