Green Energy & Environment
·
2025
·
IF 14.6
Wen Zhao,Qun Yu,Bingqing Wei,Lei Nie,Fabio Souza Toniolo,Zhenglong Li
Although current methods enable lignin extraction and depolymerization, the selective hydrogenolysis of lignin into alkene-functionalized monomers remains a significant scientific challenge. These monomers can be further functionalized into diverse natural products or pharmaceutical intermediates, thereby enabling higher-value utilization of biomass resources. Here, we report a catalyst with low Pd loading (0.4 wt%) supported on ZnO-modified carbon nanotubes (Pd/ZnNC) for the selective catalytic hydrogenolysis of the dimer β-O-4 lignin model compound (veratrylglycerol-β-guaiacyl ether, VG) via distinct reaction pathways. The Pd/ZnNC catalyst achieves a selectivity of 37.5% toward alkene-functionalized monomers (1,2-dimethoxy-4-allylbenzene and 1,2-dimethoxy-4-propenylbenzene), approaching 75% of the theoretical maximum selectivity (50%). In contrast, the Pd/CNT catalyst predominantly produces 3-(3,4-dimethoxyphenyl)-1-propanol, and excessive side-chain saturation of monomers are not conducive to subsequent utilization processes. Moreover, the Pd/ZnNC catalyst achieves a conversion rate seven-fold higher than that of commercial catalysts Pd/C (5 wt%). Experimental characterization results demonstrate that the ZnO sites on carbon nanotubes facilitate the dispersion of Pd nanoparticles, resulting in a reduction in particle size. Furthermore, the synergistic effect between ZnO and Pd active sites promotes the selective catalytic formation of monomers containing unsaturated C=C bonds. The DFT calculations reveal that the Cγ-OH elimination is facilitated by Pd nanoparticles supported on ZnO, which reduces the reaction energy barrier and promotes the generation of propenyl-substituted monomers. The pathway enabled by Pd/ZnNC catalyst offers a great potential for lignin depolymerization into high-value products.
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Surfaces and Interfaces
·
2025
·
IF 6.3
Tang Xiaojing,Shakeel Zeb,Hao Li,Abdul Haleem,Zhong Hua
The removal of hexavalent chromium from wastewater is a pressing environmental challenge due to its high toxicity and strong mobility in aquatic systems. To address this issue, we engineered a three-dimensional porous biomonolith via redox cryopolymerization, leveraging the abundant functional groups and structural advantages of covalently crosslinked lignin and chitosan for efficient chromium adsorption. Remarkably, the developed biomonolith exhibited a high chromium adsorption capacity of 232.2 mg/g at pH 2, reaching 63.6% of equilibrium uptake within the first 30 min and achieving full equilibrium in 90 min. This enhanced performance stems from the synergistic effects of the material’s macroporous structure, which facilitates rapid chromium diffusion, and its multifunctional surface chemistry, featuring amine, amide, sulfonic, and oxygen-containing groups. These functional groups promote chromium adsorption through electrostatic interactions and partial reduction of Cr(VI) to Cr(III), as confirmed by X-ray photoelectron spectroscopy (XPS). The positively charged Cr(III) further strengthens electrostatic interactions with lignin’s oxygen-containing groups, enhancing adsorption. The chromium adsorption process followed the pseudo-second-order kinetic model (R² = 0.972) and the Freundlich isotherm (R² = 0.93), indicating chemisorption and surface complexation as the dominant mechanisms. The developed biomonolith exhibits enhanced selectivity, improved shelf stability, and excellent reusability for chromium adsorption. This lignin-based biomonolith presents a promising solution for Cr(VI) removal, offering significant potential for environmental applications and advancing research in sustainable wastewater treatment.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Hao Tong,Yehan Tao,Jinwen Hu,Jian Du,Jie Lu,Bin Li,Chenglong Fu,Zhenglei Jia,Haisong Wang
The efficient pretreatment of biomass to achieve high-value utilization is a critical challenge in advancing bioenergy applications. This study presents a synergistic pretreatment method using sodium sulfite and ethanolamine to enhance the conversion efficiency of reed biomass. This approach facilitates the direct utilization of lignin while significantly improving the enzymatic hydrolysis of cellulose fibers. At optimal pretreatment conditions (20 % sodium sulfite and 25 % ethanolamine; 170 °C; 40 min), the enzymatic hydrolysis of pretreated reed achieved an efficiency of 81.68 % and a glucose yield of 77.52 %. Compared to single-agent pretreatment, the synergistic pretreatment with sodium sulfite and ethanolamine increased the reed lignin removal rate by 46.86 % and 60 %, respectively. Ethanolamine functions as a surfactant, enhancing the penetration of sodium sulfite and promoting lignin sulfonation, thereby improving biomass accessibility. This study demonstrates that the synergistic pretreatment method not only streamlines lignin separation but also significantly improves enzymatic hydrolysis efficiency, offering a promising pathway for advancing renewable bioenergy production and energy-efficient biomass utilization.
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PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Weisheng Yang,Shu Feng,Danning Wang,Shuzhen Ni,Yihui Zhou,Chaozheng Liu,Wangwang Xu,Jiantao Li,Huiyang Bian,Shaohua Jiang,Huining Xiao,Hongqi Dai,Jingquan Han
Graphene oxide (GO)-based energy storage faces dual bottlenecks: unsustainable reduction methods and sluggish proton transfer kinetics. Here, we introduce a groundbreaking green strategy using lignin-derived vanillyl alcohol (VA) as a dual-function monomer to simultaneously address these challenges. By thermally annealing GO/VA films at mild temperatures (<100 °C), VA triggers an interface-confined reduction of GO while self-polymerizing into redox-active oligomers (P-VA) that intercalate between graphene layers. This dual role-reducing agent and proton highway enables a 3D conductive network with minimized graphene restacking, abundant redox sites, and rapid H + transport pathways. Density Functional Theory (DFT) reveals how P-VA optimizes proton dynamics, while the resulting rGO-P-VA4-T90 electrode achieves a record volumetric capacitance of 311.1F/cm 3 (777.8F/cm 2 ) and retains 87.8 % capacity after 10,000 cycles. Flexible solid-state supercapacitors deliver 94.2 μWh/cm 2 energy density at 63.8 μW/cm 2 , rivaling state-of-the-art devices. This work redefines sustainable graphene engineering, merging biomass valorization with high-performance energy storage in a scalable, eco-friendly paradigm.
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高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Longhai Yi,Sheng Dai,Ajiao Zhao,Hua Qiu,Kunlin Chen
Textiles often subjected to a variety of challenging environments during outdoor use. To improve the performance and lifespan of textiles, this study presents the development of a flexible fabric coating based on waterborne multi-branched sulfonated lignin-based amphiphilic polyurethane. The coating incorporates a specially designed perfluorinated alcohol chain extender, along with choline phosphate glycol and biomass material lignin as additional chain extenders integrated into the polyurethane side chains. The introduction of polyethylene glycol with varying molecular weights was conducted to explore how polymerization degree of the hydrophilic soft segment in polyurethane influences the coating's waterproof and moisture-permeable properties. The findings indicated that incorporating polyethylene glycol-1000 as the soft segment could effectively balance the hydrophobic and breathable moisture-permeable properties of the coating. The effect of sulfonated lignin content on the UV resistance of the coating was further investigated. At a sulfonated lignin content reached 6 wt%, the coated fabric demonstrated exceptional UV shielding capabilities. Moreover, due to the amphoteric ionic side chain and terminated sulfonated lignin of polyurethane, the fabric coating exhibited excellent antibacterial properties, with an inhibition rate exceeding 99.9 % against Staphylococcus aureus and Escherichia coli . This fabric coating is suitable for use in outdoor clothing, protective gear, outdoor tents, and other fields.
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INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Xu Dong,Longxue Gao,Tianyuan Xiao,Jian Zhang,Qingwei Ping
Environmentally sustainable, non-toxic, and harmless multifunctional cotton fabrics, which are endowed with antioxidant and UV-resistant properties, exhibit considerable potential for applications in food protection and packaging. Consequently, there is an imperative need for the advancement of novel coating systems that can endow cotton fabrics with supplementary functional properties. Bamboo ethanol lignin (EL) was synthesized using a clean ethanol pulping process, and a multifunctional coating of EL was fabricated through a one-pot dipping method. In brief, EL interacts with cotton fibers via hydrogen bonding and physical adhesion, and the optimized sample, designated as Cotton@EL 1 , demonstrates outstanding antioxidant and UV-blocking properties. Compared to EL 0 , EL 1 exhibited a substantially higher antioxidant efficiency of 80.3 % and effectively blocked both UVA (99.99 %) and UVB (100 %) radiation. Furthermore, Cotton@EL 1 exhibited a UPF value of 48.2, with UV transmittance below 3 %, showcasing exceptional UV protection performance. In conclusion, this study presents a novel approach for the utilization of high-value wood materials in the development of environmentally sustainable, non-toxic, and multifunctional food protection and packaging fabrics.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Yangyang Ma,Ju Lin,Miaoyun Li,Yaodi Zhu,Lijun Zhao,Dong Liang,Dong Hyun Cho,Gaiming Zhao
In order to explore the influence of wood types on formation of polycyclic aromatic hydrocarbons (PAHs) in traditional smoked and grilled meat products, the effect of lignin in woods on formation of PAHs was investigated in meat model systems. The results showed that PAHs formation was much dependent on the heating conditions. The addition of lignin led to significantly increased PAHs, which being connected with lignin structure. In comparison, the formation of PAHs was more facilitated by lignin with G structure than that with G/S structure. However, further study of adding lignin precursors demonstrated that lignin precursors with S structure were more favorable to the formation of PAHs than those with G structure. It was proposed that the relative content and activity of G/S structure of lignin in wood played a significant role in the formation of PAHs, which might provide theoretical reference for inhibition of PAHs fundamentally.
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PubMed
高影响因子
POLYMER
·
2025
·
IF 4.5
Zhihao Du,Xiaoqiu Zhong,Jianhui Qiu,Longxiang Zhu
With the rapid development of new electronic technologies, flexible electronic devices based on conductive gels have emerged and are widely used in wearable electronic devices, electronic skins, electronic fabrics and other fields. However, traditional deep eutectic solvent polymer (PDES) gels face many problems in terms of mechanical strength and conductive properties. In this study, hemicellulose-lignin complex (HLC) extracted from straw was used as a physical cross-linker (additive) to prepare polymethacryloxyethyltrimethyl ammonium chloride-Glycerol (PDMC-Gly) gel. With the addition of 2 wt% HLC, the tensile strength and elastic modulus of HLC/PDMC-Gly gel were 846.2 kPa and 290.0 kPa respectively, both of which were significantly higher than pure PDMC-Gly gel. The introduced HLC with lignin benzene ring structure units gave the gel excellent light transmittance and ultraviolet blocking properties. In addition, the incorporation of HLC reconstructed the hydrogen bonding network within the gel, resulting in the release of free Cl − ions. Consequently, the ionic conductivity of gels was significantly enhanced, reaching of 1.61 × 10 3 mS/cm. This gel has excellent sensing sensitivity, humidity responsiveness and thermal stability, and has potential application prospects in the fields of real-time human body detection, environmental detection and fire early warning.
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ChemSusChem
·
2020
·Vol. 13
·期 17
·4409-4419
·
IF 7.962
Xinxin Li,Bo Zhang,Xiaoli Pan,Jianwei Ji,Yujing Ren,Hua Wang,Na Ji,Qiying Liu,Changzhi Li
Graphical Oh! Sweet naphthene : Ir-ReO x /SiO 2 is employed for the one-pot conversion of lignin feedstocks and typical lignin model compounds into naphthenes. The excellent activity of Ir-ReO x /SiO 2 is attributed to the synergistic effect between Ir and ReO x species based on characterization of the catalysts and control experiments. The direct transformation of lignin into fuels and chemicals remains a huge challenge because of the recalcitrant and complicated structure of lignin. In this study, rhenium oxide-modified iridium supported on SiO 2 (Ir-ReO x /SiO 2 ) is employed for the one-pot conversion of various lignin model compounds and lignin feedstocks into naphthenes. Up to 100 % yield of cyclohexane from model compounds and 44.3 % yield of naphthenes from lignin feedstocks are achieved. 2 D HSQC NMR spectroscopy before and after the reaction confirms the activity of Ir-ReO x /SiO 2 in the cleavage of the C−O bonds and hydrodeoxygenation of the depolymerized products. H 2 temperature-programmed reduction, temperature-programmed desorption of NH 3 , IR spectroscopy of pyridine adsorption, X-ray photoelectron spectroscopy, X-ray absorption fine structure analysis, and control experiments reveal that a synergistic effect between Ir and ReO x in Ir-ReO x /SiO 2 plays a crucial role in the high performance; ReO x is mainly responsible for the cleavage of C−O bonds, whereas Ir is responsible for hydrodeoxygenation and saturation of the benzene rings. This methodology opens up an energy-efficient route for the direct conversion of lignin into valuable naphthenes.
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Journal of Biobased Materials and Bioenergy
·
2024
·Vol. 18
·期 6
·1116-1124
·
IF 0.5
Cai Xin,Zhang Xuan,Zhou Yujun,Xia Nannan,Xu Xintong,Zhang Fengshan,Wang Jianmin,Wu Qin
A novel water-soluble polyurethane copolymer (i.e., LnBPU-[Zn(DOPA)2]) was synthesized through a route mainly using a prepolymer (i.e., BPU), lignin, dopamine and Zn2+ as the raw materials by cross-linking copolymerization. The optimal reaction conditions are as
follows: m(Lignin):m(BPU) is 1:4, time is 4 h and temperature is 70 °C. The prepared LnBPU-[Zn(DOPA)2] was turned out to improve the strength, resistance to water, oil and Escherichia coli of fibre when it was evenly coated on the paper
with a dose of 15 g/m2. SEM & EDS, FT-IR, GPC confirmed that the crosslinking copolymerization was enhanced by dopamine and Zn2+, which can give the polyurethane copolymer better strength and water and oil resistance. This study provided an efficient and green approach
for preparing lignin-based polyurethane, and contributes to the application of paper in more fields such as food or medical packaging.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2020
·
IF 5.162
Yueping Jiang,Yanhong Feng,Bo Lei,Huiting Zhong
A compounded medium of supercritical CO 2 , ethanol, and water (SEW) was used to extract lignin from eucalyptus fiber and the mechanism of the extraction was studied. Compared with the extraction method based on high-temperature ethanol (HTE), the lignin yield of the SEW method was 49.7% higher with higher average molecular weight. Physical and chemical synergies occurred during the extraction process. SEW compound medium penetrated eucalyptus fiber cell walls because of strong permeability, while the fast discharge of the compounded medium facilitated efficient lignin dissociation and removal. Carbonic acid formed from CO 2 and water under high temperature and pressure can provide an acidic environment to effectively degrade hemicellulose . Formaldehyde formed from CO 2 and ethanol in the process also prevented condensation of the extracted lignin fragments. The obtained lignin had high content of β-O-4 linkages and syringyl units.
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2020
·
IF 4.192
Da-xia Zhang,Guang Liu,Tong-fang Jing,Jian Luo,Guang Wei,Wei Mu,Feng Liu
It is highly desirable to fabricate a pesticide delivery system with excellent permeability to reduce the damage caused by root-knot nematodes in the soil. In this work, a novel electronegative pesticide nanocarrier was established by bonding anionic lignosulfonate with epoxy resin nanocarriers, which were loaded with abamectin (Aba). The results demonstrated that nanoparticles were negatively charged (−38.4 mV) spheres with an average size of 150 nm, and the encapsulation efficiency of nanocarriers for Aba was 93.4%. Polymer nanocarriers could prevent premature release of Aba and protect active ingredients from microbiological degradation. The adsorption strength of the soil to Aba loaded in nanocarriers was reduced by 6 to 10 times, so nanonematicides have remarkable soil mobility. Meanwhile, nanoparticles could easily penetrate the roots and nematodes. The application test confirmed that the control effect of this nanopesticide was 26–40% higher than that of the other agrochemicals. In consideration of its superior bioactivity and utilization rate, this pesticide delivery system has promising potential to control root-knot nematodes and improve the pesticide’s utilization efficiency.
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