ChemSusChem
·
2026
·Vol. 19
·期 15
·e70925
·
IF 5.9
Juanhua Kong,Xiong Zhang,Huizhen Hu,Luyao Lian,Sijie Liu,Xuehui Li
In order to tackle the challenges of biological refining, including strong acids/alkalis and high temperatures, the aerobic oxidation was implemented in the pretreatment of biomass for one‐pot extraction and separation of lignin and carbohydrates by combining the processes of biomass hydrolytic fractionation and in situ lignin oxidative modification. As expected, the yields of oxidized lignin and carbohydrate residue under optimized pretreatment condition are up to 17.1% and 59.9%, respectively, and the oxidized lignin exhibits improved depolymerization performance, giving the phenolic monomer yield of around 245.0 mg g −1 , which are higher than those of Kraft lignin (26.3 mg g −1 ) and sodium lignosulfonate (44.0 mg g −1 ) under identical conditions. Intensive investigation showed that this enhanced depolymerization performance is contributed to the existence of large number of aryl α‐ketone functional groups in oxidized lignin obtained from the oxidation of β–O–4, β–5, and β–β linkages, reducing the activation energy of C–O interlinkages. Besides, the carbon material derived from carbohydrate calcination exhibits graphene‐like structure and hierarchical porous architecture with micro‐, meso‐, and macro‐pores. It is thus believed that the lignin‐first process can significantly demonstrate unprecedented potential to accomplish the utilization of whole biomass components. Lignin‐first technology was developed by hydrolytic fractionation and in situ lignin oxidation, which resulted in 17.1% of oxidized lignin and 59.9% of carbohydrate residuce, and 24.5% yield of phenolic monomers could be obtained from the depolymerization of oxidized lignin.
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PubMed
高影响因子
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
·
2026
·
IF 4.4
Weixi Shi,Jinyu Hou,Zilu Qiu,Changmin Peng,Mengran Zhang,Changxun Dong,Wuxing Liu,Yongming Luo
PET-based lignin biostimulants removed up to 76.0% of soil PAHs. • SRB achieved 65.8% removal of recalcitrant HMW-PAHs. • Moderate nitrogen pulses enhanced PAH removal more than release stability. • PET treatments enriched Mycobacterium and increased bacterial diversity. • SRR increased positive bacteria-bacteria interactions to 39.2%. Polycyclic aromatic hydrocarbons (PAHs) pose a major challenge for soil remediation owing to their structural recalcitrance, and conventional bioremediation is often ineffective against high-molecular-weight PAHs (HMW-PAHs). In this study, two lignin-based slow-release biostimulant strategies were compared for the remediation of PAH-contaminated soil collected from a coking site over 120 days: physically encapsulated materials, including lignin-biochar (SRB) and lignin-resin (SRR) coated fertilizers, and a chemically synthesized aminated lignin material (CSK). All biostimulants were applied at an equivalent lignin input of 1% of soil dry weight. These biostimulants were designed to enhance PAH degradation by regulating nutrient availability and stimulating PAH-degrading microbial communities, while lignin may additionally contribute substrates associated with co-metabolic processes. The materials were characterized by SEM, FTIR, XPS, TGA/DSC, 1 H NMR, and elemental analysis, confirming their distinct structural features and successful modification. Nutrient-release assays showed that the physically encapsulated materials released 26.2% and 24.4% of their total nitrogen by day 5 for SRB and SRR, respectively, followed by continued release to 61.5% and 57.8% by day 25. In contrast, CSK exhibited the strongest slow-release capacity, with cumulative nitrogen release of 11.2% by day 5 and 46.1% by day 25, but maintained a consistently lower release amplitude. The physically encapsulated materials showed superior remediation performance, achieving ΣPAHs removal rates of 76.0% for SRB and 74.4% for SRR, compared with 66.0% for CSK. They were particularly effective against HMW-PAHs, with removal rates of 65.8% and 57.1%, respectively, compared with 47.7% for CSK. The physically encapsulated treatments maintained relatively high and sustained available nitrogen concentrations, with coefficients of variation of 0.16-0.17. Available nitrogen concentrations were strongly positively correlated with residual ΣPAH, MMW-PAH, and HMW-PAH concentrations ( r = 0.8-0.9). Despite its greater material stability and slow-release capacity, CSK released only 11.2% of its total nitrogen by day 5 and 46.1% by day 25 and maintained relatively small temporal variation in soil available nitrogen (CV ≈ 0.04); this nutrient-supply pattern was associated with lower PAH degradation, particularly for HMW-PAHs. These results indicate that the magnitude and temporal pattern of nitrogen supply, rather than release stability alone, are important factors associated with biostimulation efficacy. Microbial analysis showed that the physically encapsulated materials increased bacterial α-diversity and enriched PAH-degrading genera such as Mycobacterium , which was significantly correlated with PAH removal. Co-occurrence network analysis further indicated that SRR promoted positive bacteria-bacteria interactions (39.2%) while maintaining low cross-domain antagonism (6.3%). Overall, under the tested conditions, the physically coated lignin-based slow-release formulations evaluated here provided an effective strategy for the targeted remediation of PAH-contaminated soils, particularly those containing substantial HMW-PAH fractions, with their performance supported by coordinated nutrient-release and microbial-community responses.
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高影响因子
ACS Applied Polymer Materials
·
2026
·
IF 5.2
Biru Zhu,Qi Bu,Sai Hu,Xiaodi Wang,Yongchao Zhang
Wooden products (such as plywood) are expected to meet the needs of different application scenarios. Wood adhesive is essential for the adhesion strength, weather resistance, and environmental health performance of wood-based composite. However, sustainability of raw materials, a simple production pathway, and reliance on extreme environments are still issues that traditional adhesives urgently need to address. Herein, we propose a lignin-based, formaldehyde-free adhesive system through a simple one-pot strategy. This study lay not merely in the use of lignin as an adhesive precursor, but in the construction of a dual-cross-linked network through the synergistic integration of glyoxal-induced covalent cross-linking and Cu2+-mediated coordination chelation. This structural design enabled the adhesive to achieve both high bonding strength and multienvironmental adaptability. The plywood bonded with the optimized adhesive exhibited dry and wet bond strengths of 2.8 and 1.4 MPa, respectively. Remarkably, the bonding strength loss remained within an acceptable range (0.9–2.3 MPa) in the extreme temperature range (−196 to 100 °C). Additionally, the prepared plywood exhibited a long-lasting solvent resistance. The strength properties retained nearly 100% after 24 h of solvent immersion, without significant strength loss compared with the sample after being exposed to air. Environmental impact assessment demonstrated that the synthetic approach developed herein possesses excellent environmental compatibility. This work presented a simple and distinctive strategy for synthesizing green, sustainable, multienvironmental adaptive adhesives.
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高影响因子
TALANTA
·
2026
·
IF 6.7
Dandan Zhang,Mingjie Chen,Huiming Liu,Xianbing Song,Qingshan Shi,Kaijin Yu,Rizwan Ullah,Jadranka Travas-Sejdic,Xiaobao Xie
Urea-modified lignin was successfully prepared with effective metal-chelating properties. • Modified lignin can promote the growth of crop seedlings. • RNA sequencing revealed the molecular-level effects on rice seedlings. • Achieving high-value utilization of lignin and enhancing urea use efficiency. In recent years, agricultural development has received considerable attention due to the growing global demand for sustainable food production and environmental stewardship. Trace elements and nitrogen are essential nutrients that critically regulate plant seedling growth. Lignin, the second most abundant natural organic macromolecule after cellulose, is abundantly present in the low-cost byproduct from industrial biorefineries. Here, the modified lignin compounds were prepared by grafting urea onto lignin via the Mannich reaction, which could promote rice seedling growth through the slow release of nitrogen during lignin degradation. The as-prepared modified lignin showed strong ion-chelating properties, which can simultaneously provide nitrogen nutrition and metal trace elements. Then, multi-technique characterization strategies for the resulting lignin-based complexes were performed to systematically evaluate their physicochemical properties, including DLS, TEM, GPC, FTIR, XPS, and 13 C NMR. Multi-dimensional analytical strategies were also applied to analyze plant growing status, such as root/shoot dimensions and biomass, chlorophyll quantification and EdU staining. Last, RNA sequencing analysis unraveled the underlying molecular mechanisms of L-Urea/Fe on seedlings, including enhanced nutrient reservoir activity and significant upregulation of pathways related to nitrate transport, assimilation and response. Furthermore, α -amylase activity, iron-binding activity and FAD-binding (a key cofactor for iron-dependent oxidoreductases), were also significantly increased in seedlings. This work clarified the interactive regulatory network of nitrogen utilization, iron homeostasis and antioxidant defense of plants by modified lignin, providing solid evidence for the utilization of eco-friendly lignin-derived fertilizers to boost plants seedling growth. Download: Download high-res image (326KB) Download: Download full-size image
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高影响因子
Drug Design Development and Therapy
·
2026
·
IF 6.1
Xiuliang Dai,Ruitong Liu,Yujie Zhou,Tingting Fan,Cheng Wang,Hongbin Xu
Background The global rise of antibiotic-resistant bacterial infections has intensified the need for scalable and biocompatible antimicrobial nanomaterials. Lignin is an abundant renewable biopolymer with intrinsic antimicrobial activity, but its limited aqueous processability and modest antibacterial efficacy restrict its direct application.Methods Lignin–ferric nanoparticles (LS-Fe) were prepared through an aqueous one-pot process using sodium lignosulfonate (SLS) as the lignin precursor and Fe3⁺ as the coordination component, without the use of organic solvents. The nanoparticles were characterized for size, dispersity, surface charge, morphology, Fe incorporation, and batch-to-batch reproducibility. Their antibacterial activity against Staphylococcus aureus and Escherichia coli, effects on bacterial growth, biofilm biomass, membrane integrity, intracellular reactive oxygen species (ROS), and lipid peroxidation were evaluated. Fe/ROS-modulation experiments were performed using deferoxamine, thiourea, catalase, and H2O2. Exploratory in vivo efficacy and safety were assessed in a small mouse model of S. aureus-infected wounds.Results LS-Fe formed stable colloidal nanoparticles with a hydrodynamic diameter of 126.63 nm, a polydispersity index of 0.19, and a zeta potential of −44.7 mV. In preliminary in vitro assays, LS-Fe showed a descriptive trend toward greater antibacterial activity than pristine SLS against both bacterial strains. LS-Fe treatment was associated with increased intracellular ROS and lipid peroxidation, bacterial membrane damage, inhibition of biofilm formation, and reduced residual biomass of preformed biofilms. The attenuation of LS-Fe-mediated antibacterial activity by deferoxamine, thiourea, and catalase, together with its enhancement by exogenous H2O2, supported a possible Fe-mediated oxidative antibacterial contribution. In the exploratory infected-wound model, topical LS-Fe treatment was associated with faster wound closure, reduced bacterial burden, and improved histological features of wound repair, while no obvious histopathological abnormalities were observed in major organs at the tested dose.Conclusion Aqueous one-pot preparation of LS-Fe provides a simple organic-solvent-free strategy for integrating lignin nanoparticle formation with ferric functionalization. The preliminary findings support further investigation of LS-Fe as a sustainable antibacterial nanomaterial for infected-wound management, while larger confirmatory studies and more comprehensive mechanistic and safety evaluations remain necessary.
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高影响因子
CATALYSIS LETTERS
·
2025
·Vol. 155
·期 11
·1-18
·
IF 2.4
Zheng Chenyu,Sun Dayu,Gan Jingyi,Wang Rui,Gao Lijing,Wei Ruiping,Xiao Guomin
Lignin, a promising sustainable biopolymer, exhibits immense potential as a renewable feedstock for aromatic chemicals and advanced materials, offering a green alternative to fossil resources. However, its complex aromatic structure and recalcitrant β-O-4 ether bond pose significant challenges for efficient depolymerization. In this study, a series of Ce-modified Cu-Ni-Al layered double hydroxide (LDH) catalysts (CuNiAlCe x ) were designed for the catalytic transfer hydrogenolysis (CTH) of enzymatic hydrolysis lignin (EHL) using ethanol as a hydrogen donor, aiming to produce low-molecular-weight lignin oil (LO) enriched with phenolic hydroxyl groups. Structural and surface analyses revealed that Ce modification enhanced oxygen vacancy concentration through dynamic Ce 3+ /Ce 4+ redox cycling and optimized acid site distribution, synergistically facilitating C-O bond cleavage. The highest LO yield of 71.8% was attained under optimized reaction parameters, accompanied by a marked reduction in molecular weight and concurrent increases in phenolic hydroxyl and carboxyl groups. GC-MS analysis identified diverse aromatic monomers (total yield: 21.34%), predominantly guaiacyl derivatives. This study reveals the synergistic interaction between oxygen vacancies and acid sites in CuNiAlCe x catalysts, providing a green strategy for the selective valorization of lignin into aromatic compounds, thereby advancing sustainable biorefinery technology. Graphical
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高影响因子
ACS Applied Polymer Materials
·
2026
·
IF 4.7
Nan Shi,Kangjia Ji,Tong Xu,Peng Li,Fushan Wen,Dong Liu
Solar-driven interfacial water evaporation is a promising technology for sustainable freshwater production. In this study, a series of thermo-switchable Janus hydrogel evaporators were fabricated via a facile copolymerization of N-isopropylacrylamide and acrylamide, using lignin methacrylate as the dual-functional photothermal cross-linker. No additional light absorbers or cross-linkers were required in the preparation. Under illumination, the Janus structure, featuring a reduced-hydrophilic top surface and a highly hydrophilic bottom layer, was induced in situ by the photothermal-thermoresponsive cascade, avoiding mismatches inherent in conventional predesigned structural or compositional asymmetry. The asymmetric architecture synergistically suppressed salt crystallization, relieved heat loss, and facilitated fast water transportation, resulting in an evaporation rate of 2.46 kg·m–2·h–1 under 2 sun irradiation in deionized water. The evaporation rates exceeded 2.34 kg·m–2·h–1 in 3.5 wt % NaCl and 2.25 kg·m–2·h–1 in real seawater, slightly degraded when compared to that in freshwater. In the dark, the hydrogel recovered its full hydrophilicity, which could completely dissolve the accumulated surface salt within 3 h. The light-adaptive dynamic Janus switching and hydrophilicity alternation offered a feasible route for sustainable and diurnal solar desalination, enabling daytime evaporation and nighttime regeneration. This capability was validated by stable evaporation performance during the 7 day outdoor seawater evaporation experiment. The integration of photothermal conversion and covalent cross-linking into the single lignin-derived component ensured the stability of the hydrogel for long-term evaporation and provided a promising avenue for developing simple and robust biomass-based solar-driven evaporators.
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高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2026
·
IF 9.9
Zhikai Tu,Junjie Lei,Shuangquan Liao,Weifeng Liu,Jinhao Huang,Hongming Lou,Xueqing Qiu,Jingpeng Zhou,Fengshan Zhang
Eco-friendly and intelligent elastomer materials with strain-adaptive stiffening and thermo-adjustable modulus are promising for safe tire applications, yet their preparation remains challenging. Herein, inspired by the lignin role in bridging cellulose and hemicellulose in plants and the self-strengthening of skeletal muscles by physical exercise, high performance eco-friendly and intelligent elastomer composite is prepared by rearrangement of interfacial hydrogen bonds via a repetitive mechanical training process. Biomass lignin is incorporated as a bridging agent for the construction of interfacial hydrogen bonds between silica filler and bromobutyl rubber matrix. The incorporation of lignin decreases 40% usage of silane coupling agent, 25% usage of silica for elastomer biocomposite. After mechanical training, the ordered hydrogen bond networks are formed among fillers, which endow the elastomer biocomposite with excellent strain-adaptive stiffening performance (elastic modulus increasing from 1.0 MPa to 24.7 MPa during deformation) and thermally tunable modulus (reversible variations between 2.0 MPa and 3.2 MPa). In this work, we show a facile strategy for the fabrication of eco-friendly intelligent elastomer biocomposite using easily available green raw materials.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Leiming Wang,Wenjiao Ge,Chen Chaoli,Kang Li,Han Zhou,Ximin Li,Caili Li,Xiaohui Wang
Acidic deep eutectic solvents (DESs) facilitate lignocellulosic fractionation, yet their high viscosity and acidity often limit mass transfer and promote lignin condensation and byproduct formation, particularly for compositionally complex feedstocks. In this work, water was introduced into a p-toluenesulfonic acid/choline chloride (PTSA/ChCl) DES system to regulate lignin extraction and product properties during the fractionation of protein-rich brewer’s spent grains (BSG). At a water content of 20%, efficient lignin separation was achieved under mild conditions (80 °C, 45 min), with a lignin removal rate of 81.2% and a cellulose retention rate of 87.4%. Structural analyses show that the extracted lignin exhibits favorable structural integrity, with reduced condensation and limited solvent incorporation. Molecular dynamics simulations indicate that water restructures hydrogen-bonding interactions and suppresses dehydration-driven lignin condensation without compromising solubility. These results identify water as a key regulator in acidic DES systems, enabling efficient and selective lignin fractionation from compositionally complex biomass.
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高影响因子
Polymers
·
2026
·Vol. 18
·期 9
·1109
·
IF 5.8
Liuli Zhu,Jiatian Zhu,Jingpeng Zhou,Qin Feng,Baojie Liu,Chengrong Qin,Chen Liang,Caoxing Huang,Shuangquan Yao
To address the challenges of inefficient depolymerization and undesirable condensation side reactions of lignin in lignocellulosic biomass, this study employed an ethanolamine pyruvate protic ionic liquid (EAP) pretreatment system to achieve selective separation of lignin from eucalyptus while simultaneously enabling its in situ structural activation. Under optimized conditions (pyruvate-to-ethanolamine mole ratio of 1:3, 120 °C, 40 min), the EAP system afforded a lignin separation yield of 79.0 ± 0.6%, with dissolution yields of cellulose and hemicellulose of 9.6 ± 0.3% and 11.2 ± 0.4%, respectively. According to 2D-HSQC NMR and31P NMR analyses, the relative content of β-O-4 ether linkages in the isolated lignin decreased from 18.4 ± 0.4% to 14.2 ± 0.3% after EAP treatment. The total phenolic hydroxyl content reached 2.26 ± 0.08 mmol/g, and the syringyl-to-guaiacyl (S/G) ratio declined from 1.72 ± 0.04 to 0.71 ± 0.03. Based on these observations, it is proposed that the ethanolamine component facilitates the dissociation of the lignin network through hydrogen bonding and stabilizes reactive intermediates, while the pyruvate component participates in the cleavage of β-O-4 ether linkages and the removal of methoxy groups via proton catalysis and nucleophilic attack. Compared with the ethanolamine and ethanolamine acetate systems, EAP pretreatment yielded lignin of higher purity (98.4 ± 0.3%) under milder conditions, and the isolated lignin exhibited stronger antioxidant activity (IC50= 0.17 ± 0.02 mg/mL). This work offers insights into the development of pretreatment systems that combine efficient separation with structural preservation of lignin.
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高影响因子
BIOMASS & BIOENERGY
·
2026
·
IF 7
Shengtao Zhou,Zhaohui Zhang,Jun Xu,Jun Li,Wei Zhang,Kefu Chen
Efficient biomass pretreatment is a crucial step for improving the conversion efficiency of lignocellulosic resources into bioenergy and bio-based products, while the sustainable management of solvent systems remains a major challenge. In this work, a novel and sustainable recovery strategy for deep eutectic solvents (DES) used in biomass fractionation was developed by integrating antisolvent precipitation with activated carbon adsorption. This approach enabled high-purity DES recovery while simultaneously facilitating the hierarchical utilization of lignin. Experimental results showed that, within an activated carbon mass ratio range of 1:80 to 1:40, the retention rates of all DES components exceeded 96%, ensuring stable solvent purity during recycling. The removal efficiencies of lignin and glucose reached 89.27% and 92.67%, respectively, leading to the isolation of high-purity water-insoluble lignin (WL) exhibiting a lignin content of 76.22%, and water-soluble lignin (ACL) enriched in sugars (24.01% glucose and 10.95% xylose). These lignin-rich and sugar-rich components represent promising feedstocks for downstream biomass conversion. Furthermore, the recovered DES maintained stable chemical structure and pulping performance over three reuse cycles, with screened pulp yields remaining at approximately 40% and negligible changes in fiber morphology. Overall, this work provides an efficient and sustainable solvent recovery strategy for biomass pretreatment, contributing to cost-effective and scalable biomass conversion production from lignocellulosic resources.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Liangyuan Jia,Yi Shao,Ruibin Yuan,Zuoying Wen,Peiqi Liu,Hualin Wang,Zhongyue Zhou,Cunyong Zhang,Shaolin Ge,Xiaofeng Tang
Lignin pyrolysis exhibits limited yield and selectivity of monophenols, primarily due to the formation of undesirable phenolic oligomers. Previous studies predominantly focused on oligomers derived from the incomplete depolymerization of lignin macromolecules, while the contribution of monomer repolymerization to oligomers remains poorly understood. To address this knowledge gap, this study introduces the first-time application of vacuum ultraviolet photoionization aerosol mass spectrometry (VUV-PI-AMS) for real-time tracking of the dimerization dynamics of lignin model monomers (guaiacol and syringol) during fast pyrolysis. By directly analyzing aerosol-phase products, our work reveals critical mechanistic insights. Results demonstrate that elevated pyrolysis temperatures and prolonged residence times significantly enhance both the diversity and the extent of dimer formation. Notably, syringol generates heavier and structurally more complex dimers than guaiacol, highlighting the role of methoxy groups in radical–radical coupling reactions. Complementary offline analyses (ESI-HRMS and GC-MS) further corroborate the prevalence of biphenyl-core structures linked via ether, ketone, or direct C–C bonds. These findings elucidate distinct radical-initiated pathways for monomer repolymerization in lignin pyrolysis, confirming its important role in phenolic oligomer formation. The mechanistic insights from this aerosol-focused study guide the development of future strategies to suppress oligomer formation and enhance monophenol yields.
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高影响因子
危险品化学品经营许可证（带存储）