Adsorption performance and mechanisms of MgO-modified palygorskite/biochar composite for aqueous Cd (II): Experiments and theoretical calculation

Applied Surface Science, Год журнала: 2023, Номер 638, С. 157965 - 157965

Опубликована: Июль 16, 2023

Язык: Английский

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Insight into the mechanism of lignin amination pretreatment on lignin structure and its pyrolysis property for lignin valorization

Chemical Engineering Journal, Год журнала: 2024, Номер 499, С. 156386 - 156386

Опубликована: Окт. 2, 2024

Язык: Английский

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Co-removal of mercury and organic dye via the rectangle-shaped nanosheets loaded hydrochar: Surface interactions and DFT calculations

Separation and Purification Technology, Год журнала: 2024, Номер 353, С. 128553 - 128553

Опубликована: Июнь 30, 2024

Язык: Английский

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Dual-functionalization of lignin towards superior reinforcement for styrene-butadiene rubber

Industrial Crops and Products, Год журнала: 2025, Номер 225, С. 120500 - 120500

Опубликована: Янв. 13, 2025

Язык: Английский

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A functional lignin for heavy metal ions adsorption and wound care dressing

International Journal of Biological Macromolecules, Год журнала: 2023, Номер 239, С. 124268 - 124268

Опубликована: Март 31, 2023

Язык: Английский

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Polyglutamic acid and its derivatives as multi-functional biopolymers for the removal of heavy metals from water: A review

Journal of Water Process Engineering, Год журнала: 2023, Номер 56, С. 104367 - 104367

Опубликована: Окт. 9, 2023

Язык: Английский

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Benign and Selective Amination of Lignins towards Aromatic Biobased Building Blocks with Primary Amines

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(41)

Опубликована: Июль 16, 2024

Lignin is a widely available second-generation biopolymer and the main potential source of renewable aromatic building blocks. Lignin-based polyamines offer great in applications based on chemical materials sciences. However, common aminations techniques for lignin usually involve toxic chemicals generate hindered low reactivity amines. In this study, we developed two new, simple, benign 2-step methodologies elaboration lignin-based from different technical lignins (kraft, soda organosolv) with selectivity towards reactive primary These methods grafting amide groups onto followed by hydrolysis step. Non-toxic heterocyclic compounds N-acetyl-2-oxazolidinone 2-methyl-2-oxazoline were used as amidation agents. Hydrolysis was performed acetone-water mixtures. Reactions studied model optimized lignins. Aminated fully characterized amines quantified using quantitative

Язык: Английский

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Molecularly engineered lignin to polyphenol via organocatalysis as an active sunscreen ingredient

Journal of Bioresources and Bioproducts, Год журнала: 2024, Номер 9(2), С. 197 - 210

Опубликована: Март 21, 2024

Phenolation is one of the effective strategies to synthesize lignin-based polyphenols, improve lignin's properties, and extend its value-added applications in biological, medicinal cosmetic fields. Herein, by taking structural feature advantage lignin, an green strategy was developed molecularly engineer lignin into a robust lignin-3-(2-hydroxyphenyl)propionate ester (LPPE) derivative via transesterification reaction between 3,4-dihydrocoumarin (DHC) aliphatic hydroxyls under organocatalysis. The optimized novel systematically characterized 1H, 13C 31P nuclear magnetic resonance (NMR) Fourier transform infrared (FT-IR) spectroscopy. findings indicated that successful introduction 3-(2-hydroxyphenyl)propionate groups using OH groups/DHC/organic base molar ratio 1꞉1꞉0.3 at 120 °C for 6 h increased content phenolic hydroxyl from 1.793 1 3.017 9 mmol/g, LPPE exhibited excellent ultraviolet-absorbing antioxidant performance with up 90 % free radical scavenging activity within 20 min 5 mg/mL LPPE. In addition, good biocompatibility high Sun protection factor (SPF) value 40.9 were achieved (w) dosage cream, indicating significant application potential sunscreen.

Язык: Английский

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Investigation of regeneratable biopolymer-based aerogels for heavy metal decontamination from water: Quantum chemical analysis and experimental investigation

Separation and Purification Technology, Год журнала: 2024, Номер 353, С. 128311 - 128311

Опубликована: Июнь 6, 2024

Heavy metals pose a significant threat to human health and ecological security due their high toxicity, mobility, persistence in the environment. Herein, synthesis of novel cellulose nanofiber-based aerogel using non-toxic biopolymers such as sodium alginate polyglutamic acid eradicate lead, zinc, copper from water. The physical characterisation adsorption performance aerogels were evaluated monolithic bead configurations. study revealed superior for beads compared configuration. achieved maximum capacity 171.7 mg/g, 100 mg/g 142.0 respectively. exhibited specific surface area aerogels. presence functional groups including carboxyl, amino hydroxyl on likely facilitated through coordinate bond formation electrostatic interactions. Density Functional Theory calculations supported role oxygen nitrogen containing capturing heavy metal ions. displayed remarkable regeneration ability reused 20 times without any reduction indicating its potential sustainable adsorbent removal

Язык: Английский

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Enhanced removal of Cr(VI) by polyethyleneimine-modified bamboo hydrochar

Environmental Science and Pollution Research, Год журнала: 2023, Номер 30(41), С. 94185 - 94194

Опубликована: Авг. 1, 2023

Язык: Английский

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