Research Progress on the Preparation and High-Value Utilization of Lignin Nanoparticles

Liu, Kefeng; Zhuang, Yuntang; Chen, Jiachuan; Yang, Guihua; Dai, Lin

doi:10.3390/ijms23137254

Cited by 20 publications

(14 citation statements)

References 68 publications

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“…In this context, the advent of lignin hydrocolloids as biobased building blocks has gathered considerable attention and has transformed the possibilities of using lignin in many prospective end-uses . Lignin is a plant-based polyphenol that allows trees to have a strong structure and protection against pests and microorganisms. − Considering its inherent attractive properties such as high carbon content (>60 atom %) and thermal stability, biodegradability, antioxidant activity, and the absorbance of UV irradiation, − lignin has emerged as a prime candidate for biobased nanoparticles and nanohybrids. − In particular, the spherical and colloidally stable lignin nanoparticles (LNPs) display benefits compared to crude lignin powders that are poorly soluble in many common solvents and are heterogeneous both in molecular weight and distribution of functional groups. − …”

Section: Introductionmentioning

confidence: 99%

Stabilized Lignin Nanoparticles for Versatile Hybrid and Functional Nanomaterials

et al. 2022

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Spherical lignin nanoparticles are emerging biobased nanomaterials, but instability and dissolution in organic solvents and aqueous alkali restrict their applicability. Here, we report the synthesis of hydroxymethylated lignin nanoparticles and their hydrothermal curing to stabilize the particles by internal cross-linking reactions. These colloidally stable particles contain a high biobased content of 97% with a tunable particle size distribution and structural stability in aqueous media (pH 3 to 12) and organic solvents such as acetone, ethanol, dimethylformamide, and tetrahydrofuran. We demonstrate that the free phenolic hydroxyl groups that are preserved in the cured particles function as efficient reducing sites for silver ions, giving rise to hybrid lignin−silver nanoparticles that can be used for quick and facile sensing of hydrogen peroxide. The stabilized lignin particles can also be directly modified using base-catalyzed reactions such as the ring-opening of cationic epoxides that render the particles with pHdependent agglomeration and redispersion properties. Combining scalable synthesis, solvent stability, and reusability, this new class of lignin nanoparticles shows potential for its use in circular biobased nanomaterials.

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Section: Introductionmentioning

confidence: 99%

Stabilized Lignin Nanoparticles for Versatile Hybrid and Functional Nanomaterials

et al. 2022

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“…This process generated solid spheres with an approximate diameter of 80 nm, and they remained stable at pH 12 . In nanoprecipitation, the solubility of the solute (i.e., amphiphilic lignin) decreases with a decreasing quality of the solvent or an increasing amount of the antisolvent, and a supersaturation force promotes chain nucleation above the critical micelle concentration, resulting in cluster growth to form well-defined nano/microparticles. , From Table , we conclude that precursors of high hydrophobicity are more suitable, yielding uniform and monodispersed solid spheres . Furthermore, hydrophobic chains tend to render particles with smaller diameters .…”

Section: Analysis Of Effects Of Lignin Precursor and Synthetic Nanopa...mentioning

confidence: 83%

Lignin Smart Nanoparticles for Effective and Eco-Friendly Resource Recovery from Wastewater: Status, Challenges, and Opportunities

Andeme Ela,

Heiden

2024

ACS Sustainable Resour. Manage.

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The overexploitation of finite natural resources and anthropogenic pollution pose a threat to economic security and human health. One approach for tackling these challenges is the development of effective, accessible, low-cost, bioderived, and eco-friendly technologies for the recovery of resources from wastewater. Wastewater contains resources of appreciable market value, including metals, pesticides, inorganic nutrients, dyes, and per- and polyfluorinated substances (PFAS). Established technologies, such as low-pressure membranes, biological treatments, and oxidation, are ineffectual, while more intricate technologies such as customized granular activated carbon and anion exchange resins suffer predominantly from high fouling rates and operating costs, which eventually reduce the effectiveness of resource recovery; thus, these limitations motivate the development of experimental technologies. Green, biopolymeric, smart lignin nanoparticles are potential candidates growing in popularity for their effective recovery of resources from wastewater via adsorption, as lignin-based nanoparticles with metal adsorption capacities higher than 40 mg/g have been reported. In addition, employing lignin nanoparticles for this purpose will promote the circular economy of biorefineries and support the sustainable development of nations. Nonetheless, the valorization of lignin through nanotechnology is limited by the inhomogeneity of technical lignins and the resultant nanoparticles. For instance, the physical (e.g., surface area and electrostatic charge) and chemical (e.g., concentration of hydroxyl and carbonyl groups) properties of the lignin precursor will determine the affinity of the resultant nanoparticles to specific metal ions and their adsorption capacity. Hence, a profound understanding of the relationship between lignin derivation and nanoparticle synthetic methodology with resultant nanoparticle properties (e.g., hydrodynamic size) and performance (i.e., adsorption capacity) is needed to advance the adoption of lignin nanoparticles in sustainable industrial wastewater treatment. Alas, reviews of this nature are lacking. To fill this gap, this perspective reflects on the state-of-the art techniques for lignin nanoparticle synthesis and their application in the retrieval of various substances from aqueous environments, highlighting the properties–performance correlations, the specificity of the nanoparticles, and their comparative performance against established and laboratory-scale technologies. Ultimately, standardized strategies will be needed to control the functionality of lignin nanoparticles (e.g., hydrodynamic size and programmable morphology) to enhance the effective recovery of valuable resources from copious and diverse wastewater resources.

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“…Without chemical conversion, lignin can be incorporated directly into polymer matrices to reduce production costs and improve performance. For example, unmodified lignin can be used as UV stabilizers, antioxidants, flame retardants and additives to promote plasticity and flowability of the final product [67][68][69][70][71][72][73][74]. Although there is potential for direct industrial application, unmodified lignin can only be incorporated in small amounts due to its weak mechanical properties.…”

Section: Biomass-based Materials Optimizationmentioning

confidence: 99%

Bioresource Upgrade for Sustainable Energy, Environment, and Biomedicine

Новоселов

et al. 2023

Nano-Micro Lett.

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We conceptualize bioresource upgrade for sustainable energy, environment, and biomedicine with a focus on circular economy, sustainability, and carbon neutrality using high availability and low utilization biomass (HALUB). We acme energy-efficient technologies for sustainable energy and material recovery and applications. The technologies of thermochemical conversion (TC), biochemical conversion (BC), electrochemical conversion (EC), and photochemical conversion (PTC) are summarized for HALUB. Microalgal biomass could contribute to a biofuel HHV of 35.72 MJ Kg−1 and total benefit of 749 $/ton biomass via TC. Specific surface area of biochar reached 3000 m2 g−1 via pyrolytic carbonization of waste bean dregs. Lignocellulosic biomass can be effectively converted into bio-stimulants and biofertilizers via BC with a high conversion efficiency of more than 90%. Besides, lignocellulosic biomass can contribute to a current density of 672 mA m−2 via EC. Bioresource can be 100% selectively synthesized via electrocatalysis through EC and PTC. Machine learning, techno-economic analysis, and life cycle analysis are essential to various upgrading approaches of HALUB. Sustainable biomaterials, sustainable living materials and technologies for biomedical and multifunctional applications like nano-catalysis, microfluidic and micro/nanomotors beyond are also highlighted. New techniques and systems for the complete conversion and utilization of HALUB for new energy and materials are further discussed.

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Research Progress on the Preparation and High-Value Utilization of Lignin Nanoparticles

Cited by 20 publications

References 68 publications

Stabilized Lignin Nanoparticles for Versatile Hybrid and Functional Nanomaterials

Stabilized Lignin Nanoparticles for Versatile Hybrid and Functional Nanomaterials

Lignin Smart Nanoparticles for Effective and Eco-Friendly Resource Recovery from Wastewater: Status, Challenges, and Opportunities

Bioresource Upgrade for Sustainable Energy, Environment, and Biomedicine

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