N-Doped Carbon Nitride with Embedded Pd Nanoparticles for Selective Photocatalytic Valorisation of Biomass-Derived Vanillin into Vanillyl Alcohol and 2-Methoxy-4-Methyl Phenol DOI

Himanshu Dhiman,

Rajat Ghalta, Rajaram Bal

и другие.

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(21), С. 24819 - 24832

Опубликована: Окт. 28, 2024

Efficient conversion of abundant biomass into high-value chemicals is crucial for sustainable chemical production. Herein, we report the design and synthesis a Pd nanoparticles (NPs)-embedded N-doped carbon nitride (Pd@NCN) nanocomposite photocatalytic transformation biomass-derived compounds. N-doping using DMF significantly enhanced visible light absorption, as evidenced by DRUV spectroscopy, making it suitable photocatalyst blue LED-driven reactions. Subsequent decoration with NPs remarkably improved catalyst's performance. UPS measurements revealed that NPs, their lower Fermi level higher work function compared to photoactive support, act efficient electron acceptors, promoting charge separation improving catalytic activity. This was corroborated PL, TCSPC, EIS studies. Photogenerated electrons on surface-activated hydrogen, enabling hydrogenation derivatives at room temperature. Concurrently, photogenerated holes were consumed IPA via O–H C–H, leading acetone formation. The optimized 1% [email protected] catalyst exhibited exceptional activity in vanillin (VAN), achieving 79.6% 94.4% selectivity vanillyl alcohol (VOL) within an hour. Moreover, reaction could be tuned adjusting loading time, complete VAN excellent (∼99%) 2-methoxy-4-methylphenol (MMP) 2% 4.5 h. Comprehensive characterization mechanistic studies provided insights structure–activity relationship, paving way development advanced NPs-based photocatalysts challenging valorization ambient conditions.

Язык: Английский

Development and Thermo-Mechanical Analysis of Bio-based Epoxy Resin/Cardanol Blends as Matrices for Green Composites Manufacturing DOI
Lorena Saitta, Giuliana Rizzo, Claudio Tosto

и другие.

Journal of Polymers and the Environment, Год журнала: 2025, Номер unknown

Опубликована: Янв. 18, 2025

Язык: Английский

Процитировано

0

Oxidative depolymerization of lignin in a Fixed-Bed tubular membrane reactor DOI

Dayu Sun,

Huijun Liu, Hongwei Wu

и другие.

Separation and Purification Technology, Год журнала: 2025, Номер unknown, С. 132478 - 132478

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0

A novel N-(2-acetamido)-2-aminoethanesulfonic acid (AASA) and Zr3C2Tx MXene-modified organosolv lignin (OL) (AASA@ Zr3C2Tx @OL) composite for simultaneous adsorption of tetracycline and U(VI) DOI
Irfan Ijaz, Aysha Bukhari,

Ammara Nazir

и другие.

Materials Chemistry and Physics, Год журнала: 2025, Номер unknown, С. 130726 - 130726

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0

Recent progress towards fuels and value-added chemicals through lignin depolymerization DOI
Yu Yin,

Changsheng Suo,

Chunhui Ma

и другие.

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116321 - 116321

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0

Chemically Recyclable, Hydroxycinnamic Acid‐Derived Semi‐Aromatic Polycarbonates DOI Creative Commons

Ghezae Tekleab,

Pascal Schouwink,

Harm‐Anton Klok

и другие.

Journal of Polymer Science, Год журнала: 2025, Номер unknown

Опубликована: Апрель 9, 2025

ABSTRACT Polycarbonate polymers find widespread use for a variety of applications. Driven by the need to transition away from fossil‐based resources, there is increasing interest in exploring bio‐based monomers synthesis polycarbonates. One interesting class molecules that can be isolated biological including lignin, are hydroxycinnamic acids. This paper reports library aromatic diols using p ‐coumaric acid, ferulic and sinapic acid as starting materials. Using dimethyl carbonate, these polymerized generate semi‐aromatic polycarbonate homo‐ copolymers. These polycarbonates depolymerized via an organocatalyzed process afford essentially quantitative yield. The obtained this depolymerization could subsequently repolymerized, with no purification needed, regenerate original polymer identical molecular weight, providing pathway chemical recycling

Язык: Английский

Процитировано

0

Structural Properties of Lignin DOI
Yousaf Khan,

Anila Mukhtiar,

Komal Arooj

и другие.

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0

Lignin extraction from lignocellulosic biomass and its valorization to therapeutic phenolic compounds DOI
Harmeet Kaur, Dinesh Goyal

Journal of Environmental Management, Год журнала: 2024, Номер 372, С. 123334 - 123334

Опубликована: Ноя. 16, 2024

Язык: Английский

Процитировано

2

Combining isosorbide and lignin-related benzoic acids for high-Tg polymethacrylates DOI Creative Commons

Siim Laanesoo,

Olivier Bonjour, Rauno Sedrik

и другие.

European Polymer Journal, Год журнала: 2023, Номер 202, С. 112595 - 112595

Опубликована: Ноя. 14, 2023

The insertion of rigid aliphatic or aromatic building blocks in polymer structures is an efficient synthetic strategy towards high-Tg materials. In the present work, we have functionalized isosorbide 5-methacrylate with various lignin-inspired esters to yield a series isosorbide-2-aryl carboxylate-5-methacrylate monomers (ArIMAs) as single regioisomers. selection phenyl carboxylate side groups included benzoate, p-cyanobenzoate, meta/para-methoxybenzoates, and different vanillic acid esters. This afforded range seven bio-based size, polarity, substitutions. Polymerizations were carried out by conventional free radical initiation obtain corresponding high molecular-weight poly(aryl methacrylate)s (PArIMAs). polymerizations evaluated solvents, including toluene, EtOAc, γ-valerolactone, 2-MeTHF, DMSO identify most suitable conditions. polymers exhibited glass transition temperatures broad range, from 80 168 °C, thermally stable up 268 °C. Furthermore, dynamic rheology experiments indicated that sufficiently for melt processing. availability combined stability make these materials attractive use high-performance plastics coatings.

Язык: Английский

Процитировано

4

Eugenol’s journey to high-performance and fire-retardant biobased thermosets DOI
Pierre Delliere, Camille Bakkali‐Hassani, Sylvain Caillol

и другие.

Current Opinion in Green and Sustainable Chemistry, Год журнала: 2024, Номер 51, С. 100988 - 100988

Опубликована: Ноя. 29, 2024

Язык: Английский

Процитировано

1

Thermal and Mechanical Properties of Lignin Derivative–Sulfur Composites DOI Creative Commons
Nawoda L. Kapuge Dona, Perla Y. Sauceda‐Oloño, Rhett C. Smith

и другие.

Journal of Polymer Science, Год журнала: 2024, Номер unknown

Опубликована: Дек. 11, 2024

ABSTRACT Lignin, comprising 20%–35% of lignocellulosic biomass, is the second most abundant biopolymer after cellulose. As bioethanol industry expands, accumulation lignin by‐products necessitates innovative valorization strategies. This study explores synthesis and characterization lignin‐derived composites. Specifically, reaction 20 wt. % guaiacol or syringol with 80 elemental sulfur gives composites GS SS , respectively. The chemical structures were elucidated using GC–MS, 1 H NMR, UV–Vis spectroscopy, revealing formation both SC aryl alkyl bonds. Thermal morphological analysis (via TGA, DSC, PXRD, SEM‐EDS) indicated has higher crystallinity thermal stability than attributed to a degree crosslinking greater content dark sulfur. Mechanical testing showed exhibits superior compressional flexural strengths, enhanced Young's modulus Shore hardness, compared . Notably, mechanical strength parameters for are comparable those C62 class bricks used in construction applications. These findings suggest that composites, particularly incorporating syringol, can provide viable alternatives traditional materials various applications, contributing waste sustainable science.

Язык: Английский

Процитировано

1