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HF-free low-temperature synthesis of MXene for electrochemical hydrogen production.
Nanotechnology
January 2025
Advanced Hybrid Nanomaterial Laboratory, Department of Chemistry, School of Energy Technology, Pandit Deendayal Energy University, Gandhinagar 382426, Gujarat, India.
MXenes [two-dimensional (2D) transition-metal carbides, nitrides and carbonitrides] are gaining significant interest as alternative electrocatalysts for the hydrogen evolution reaction due to their excellent properties such as high electrical conductivity, large surface area and chemical stability. MXenes are traditionally synthesized using hydrofluoric acid (HF), which raises safety and environmental concerns due to its highly corrosive and toxic nature. HF introduces fluoride functional groups on the surface of MXenes, and these have been reported to have a detrimental effect on electrocatalysis.
View Article and Find Full Text PDFEnriching fluorotelomer carboxylic acids-degrading consortia from sludges and soils.
Sci Total Environ
January 2025
Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ, United States. Electronic address:
Fluorotelomer carboxylic acids (FTCAs) has drawn increasing attention due to their prevalent occurrence, high toxicity, and bioaccumulating effects. In this study, microbial consortia with sustainable FTCA removal abilities were enriched and characterized from two activated sludges and five soils when no external carbon sources were supplemented. After four generations of enrichment, stable 6:2 FTCA and 5:3 FTCA biodegradation were achieved, reaching 0.
View Article and Find Full Text PDFComparative evaluation of remineralizing efficacy of calcium sodium phosphosilicate, ginger, turmeric, and fluoride.
Dent Res J (Isfahan)
October 2024
Dentistry Department, Children's Hospital of Queen Fabiola (HUDERF), Free University of Brussels (ULB), Brussels, Belgium.
Background: White lesions, also known as white spots, are the earliest signs of tooth decay. At this stage, noninvasive preventive treatments, such as fluoride application, can help to slow down or even reverse the progression of white lesions. For decades, fluoride has held the spotlight as the go-to agent in oral preventive care, demonstrating significant remineralizing power.
View Article and Find Full Text PDFConcentration and Stability of Fluoride Chemically Available in Charcoal-Containing Toothpastes.
Caries Res
November 2024
Faculdade de Odontologia de Piracicaba, State University of Campinas (UNICAMP), Piracicaba, Brazil.
Introduction: Among the wide variety of commercially oral hygiene products, activated charcoal-based toothpastes have irrupted the market, claiming multiple benefits. Although most are fluoride free, others incorporate fluoride into their formulations, yet the chemical availability and stability of fluoride in these products remain unclear. Our study aimed to assess the chemical availability and stability of fluoride in commercially fluoridated toothpastes formulated with activated charcoal.
View Article and Find Full Text PDFFluoride Ingestion Induces Formation of Unusual Macromolecular Complexes in Gut Lumen Which Retard Absorption of Essential Minerals and Trace Elements by Chelation.
Biol Trace Elem Res
October 2024
Clinical Ecotoxicology Diagnostic & Research Facility, Department of Anatomy, AIIMS, New Delhi, 110029, India.
Article Synopsis
- * Results showed that fluoride-exposed groups had significantly lower levels of essential minerals in their blood and higher amounts excreted in the stool compared to the control group.
- * The analysis revealed that fluoride causes the formation of unusual chemical complexes in stool, which hinders mineral absorption and alters the chemical environment in the gut.
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