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Preparation of nitrogen-doped lignin porous carbon using low dosage KHCO for efficient methylene blue adsorption: Activation mechanism and adsorption performance.
Int J Biol Macromol
December 2024
School of Chemical Engineering and Light Industry, Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangdong University of Technology, Guangzhou 510006, Guangdong, China; Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center, Jieyang 515200, China; Guangdong Basic Research Center of Excellence for Ecological Security and Green Development, Guangdong University of Technology, Guangzhou 510006, China. Electronic address:
The previous requirement for activation of porous carbon adsorbents commonly exceeded several times the mass of the carbon precursor. Therefore, it was crucial to develop cost-effective and efficient carbon adsorbent materials for long-term environmental remediation. In this study, biorefinery lignin was utilized to fabricate porous carbon with an ultrahigh specific surface area (3423 m g) and pore volume (1.
View Article and Find Full Text PDFMultifunctional acoustic and mechanical metamaterials prepared from continuous CFRP composites.
Mater Horiz
November 2024
School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
The imperative advance towards achieving "carbon neutrality" necessitates the development of porous structures possessing dual acoustic and mechanical properties in order to mitigate energy consumption. Nevertheless, enhancing various functionalities often leads to an increase in the structural weight, which limits the feasibility of using such structures in weight-sensitive applications. In accordance with the outlined specifications, a novel structural design incorporating carbon fiber reinforced polymer (CFRP) composites alongside mechanical and acoustic metamaterials has been introduced for the first time.
View Article and Find Full Text PDFMelamine-Derived Mesoporous Carbon for Efficient and Selective Removal of Trace Hg(II) from Honeysuckle Decoction.
ACS Omega
November 2024
School of Pharmacy, Zunyi Medical University, Zunyi 563000, China.
Melamine-derived mesoporous carbon, which was obtained from pyrolysis of modified melamine, was employed for the purpose of eliminating trace amounts of Hg(II) from honeysuckle decoction. The specific surface area of the mesoporous carbons with N-functional (MCN) was 648.372 m·g.
View Article and Find Full Text PDFBenchmark Dose of Melamine Exposure for a Renal Injury Marker Mediated by Oxidative Stress: Examples in Patients with Urolithiasis and Occupational Workers.
Toxics
August 2024
Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Room 721, CS Research Building, 100 Shih-Chuan 1st Road, Kaohsiung 807378, Taiwan.
Establishing a safe exposure level from epidemiological studies while providing direct hazard characterization in humans often faces uncertainty in causality, especially cross-sectional data. With advances in molecular epidemiology, it is reasonable to integrate identified intermediate biomarkers into health risk assessment. In this study, by considering the mediation of the oxidative stress marker malondialdehyde (MDA), we explored the exposure threshold of melamine on the early renal injury marker N-acetyl-β-D glucosaminidase (NAG).
View Article and Find Full Text PDFCombination of Standard Addition and Isotope Dilution Mass Spectrometry for the Accurate Determination of Melamine and Cyanuric Acid in Infant Formula.
Foods
July 2024
Sigma-Aldrich Production GmbH (Subsidiary of Merck KGaA), Industriestrasse 25, 9471 Buchs, SG, Switzerland.
In the melamine scandals of the early 2000s, different companies of the dairy industry cheated their products by applying chemical substances to feign a higher content of nitrogen. However, this had a severe toxic impact on the kidney health of consumers. As a result, tremendous effort was put into the prevention of further harm to the public.
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