Cellulose Nanocrystal-in-Solvent Processing for Efficient One-Pot Upcycling of Commercial Polymeric PFAS DOI
Jinsu Park, Youngeun Kim, Seung‐Yeop Kwak

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(42), P. 57915 - 57926

Published: Oct. 10, 2024

Upcoming regulations aim to ban per- and polyfluoroalkyl substances (PFAS), including commercial polymeric PFAS, or fluoropolymers, such as poly(tetrafluoroethylene) (PTFE) poly(vinylidene fluoride) (PVDF), due their environmental toxicological impacts. However, fluoropolymers also provide crucial properties for clean energy transitions, regulation may hinder further technological advancements. Therefore, a facile one-pot recycling–upcycling strategy using inexpensive biomass, cellulose nanocrystals (CNCs), absorbents cocomponents fluoro-functionalized composites could align with global sustainability goals demands. Herein, we present closed-loop CNC-in-solvent (CiS) processing system, which involves stirring CNCs in only low-polarity solvents like toluene (CiS-T). Our study reveals that CiS-T is two-step process where the CNC–solvent interaction exposes CNCs' reducing end aldehyde protons solvent polarity promotes H–F bond formation. The used was recollected reused. Additionally, demonstrate practical application of PTFE– PVDF–CNC hybrids, byproducts process, performance-enhancing agents green-energy-harvesting devices triboelectric nanogenerators. findings not offer sustainable method overcome challenges from against but insights into developing an efficient, solvent-mediated CNC functionalization addresses forthcoming key industries.

Language: Английский

Bioadsorbent nanocellulose aerogel efficiency impregnated with spent coffee grounds DOI
Ahmad Azfaralariff,

Khaled Mohamed Omar,

Amerh Aiad Alahmadi

et al.

International Journal of Biological Macromolecules, Journal Year: 2023, Volume and Issue: 258, P. 128746 - 128746

Published: Dec. 15, 2023

Language: Английский

Citations

6
Nitrogen-rich, potato peel-derived hydrochar as an effective dye adsorbent DOI

Ahmed A. Goyi,

Nidhal M. Sher Mohammad,

Khalid M. Omer

et al.

Biofuels, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 14

Published: April 21, 2024

This study explores the potential of hydrochar derived from potato peels as a cost-effective option for efficient adsorption. Potato peel (PPH) was produced via hydrothermal carbonization (HTC) with KOH activation at 200 °C 2 h. The resulting then divided into three portions, two which underwent mixing urea followed by pyrolysis under N2 gas 600 and 3 h, respectively, in formation N-doped pyrochars (N-PPH.2 hrs N-PPH.3 hrs). Characterization using Brunauer-Emmett-Teller (BET), Scanning Electron Microscope (SEM), Energy-Dispersive X-ray Spectroscopy (EDS), Diffraction (XRD), Fourier Transform Infrared (FTIR) revealed distinctive properties. results showed that nitrogen atoms were effectively incorporated pyrochar, increasing significantly 3.7 to 8.3% 45.6% new compounds. modification impacted acidity basicity chemical surfaces pyrochar. particle sizve compounds 296.11 nm, demonstrated most adsorption Congo red (CR). efficiency achieved through various mechanisms, including pore filling, Lewis acid-base interaction, hydrogen bonding, π–π interaction. presence highly available functional groups, primarily pyridinic-N, pyrrolic-N, graphitic-N, further enhanced capacity. highest capacities observed 310 mg g−1 N-PPH-2Hr 400 N-PPH-3Hr, respectively. Increased temperature CR concentration correlated positively adsorption, following Freundlich isotherm pseudo second-order kinetics. Further, indicate prepared chars is endothermic, increases disorder, spontaneous process. highlights cost-effectiveness agro-industrial waste-derived removal, highlighting economic environmental benefits.

Language: Английский

Citations

1
Elucidating the synergistic interactions of macroalgae and cellulose nanofibers on the 3D structure of composite bioaerogel properties DOI Creative Commons
Rayan Y. Mushtaq, Ahmad Azfaralariff,

H. P. S. Abdul Khalil

et al.

eXPRESS Polymer Letters, Journal Year: 2024, Volume and Issue: 18(7), P. 760 - 777

Published: Jan. 1, 2024

Seaweed from macroalgae and cellulose nonwood materials have gained attention in various fields.This study explores how seaweed nanofibers (CNF) interact to form 3D networks composite bioaerogels.The ratio of CNF was varied see it affects the aerogel's inside its properties.The observations show that biocomposite aerogel is more rigid shrinks less than using a single biopolymer.The has fine, thin network structure, sheet structure.The combines both fine mechanical properties are significantly influenced by composition.The introduction increases elasticity, while enhances firmness.Generated computer modelling revealed abundant hydroxyl groups facilitated formation intermolecular bonds with seaweed.The bonding led increased adhesion entanglement between biopolymers, consequently enhancing elasticity establishing stable interaction.The X-ray imaging model shows skeletal framework primarily consists biopolymer, serving reinforce this structure thus robustness bioaerogels.

Language: Английский

Citations

1
Flexible aerogel composites for the elimination of crystal violet and methyl orange DOI

Phuong X.T. Nguyen,

Anh P.N. Pham,

Hong T.T. Nguyen

et al.

Journal of Porous Materials, Journal Year: 2024, Volume and Issue: 31(6), P. 2003 - 2016

Published: July 2, 2024

Language: Английский

Citations

1
Cellulose Nanocrystal-in-Solvent Processing for Efficient One-Pot Upcycling of Commercial Polymeric PFAS DOI
Jinsu Park, Youngeun Kim, Seung‐Yeop Kwak

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(42), P. 57915 - 57926

Published: Oct. 10, 2024

Upcoming regulations aim to ban per- and polyfluoroalkyl substances (PFAS), including commercial polymeric PFAS, or fluoropolymers, such as poly(tetrafluoroethylene) (PTFE) poly(vinylidene fluoride) (PVDF), due their environmental toxicological impacts. However, fluoropolymers also provide crucial properties for clean energy transitions, regulation may hinder further technological advancements. Therefore, a facile one-pot recycling–upcycling strategy using inexpensive biomass, cellulose nanocrystals (CNCs), absorbents cocomponents fluoro-functionalized composites could align with global sustainability goals demands. Herein, we present closed-loop CNC-in-solvent (CiS) processing system, which involves stirring CNCs in only low-polarity solvents like toluene (CiS-T). Our study reveals that CiS-T is two-step process where the CNC–solvent interaction exposes CNCs' reducing end aldehyde protons solvent polarity promotes H–F bond formation. The used was recollected reused. Additionally, demonstrate practical application of PTFE– PVDF–CNC hybrids, byproducts process, performance-enhancing agents green-energy-harvesting devices triboelectric nanogenerators. findings not offer sustainable method overcome challenges from against but insights into developing an efficient, solvent-mediated CNC functionalization addresses forthcoming key industries.

Language: Английский

Citations

1