ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Haixu Wang,Ying-An Mai,Wenlian Qiu,Weifeng Liu,Dongjie Yang,Zhiqiang Fang,Xueqing Qiu
Degradable paper-based packaging materials are promising alternatives to plastic packaging. However, the inherent limitations of paper, such as poor water and oil resistance, restrict its broader applications. It is essential to develop green and degradable coatings to compensate for the shortcomings of paper materials. In this study, we prepared a tough, hydrophobic, stain-resistant, and degradable lignin-based waterborne polyurethane (LWPU) for a paper packaging coating. LWPU emulsions with good stability were synthesized using low-molecular-weight lignin (LMWL) and polycaprolactone diol (PCL) as raw materials and poly(dimethylsiloxane) (PDMS) as a modifier. LWPU films exhibited excellent mechanical properties, with the optimal tensile strength of 40.3 MPa and elongation at break of 1148%, hydrophobicity, antiaging properties, and UV shielding. The mechanical properties of the coated papers were significantly affected by the emulsion permeation and the type of paper substrate. The dense LWPU coating enhanced the barrier performance of the paper against water, oil, and gas. Incorporating PDMS segments into the coating further improved the hydrophobicity and stain resistance of the paper, allowing for easy removal of common stains. Moreover, the coating can be completely removed from the paper using solvent-dissolving and chemical degradation methods, which is advantageous for paper recycling. This work provides a reference for the industrial application of LWPU emulsions as green paper coatings.
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Journal of Water Process Engineering
·
2025
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IF 6.7
Jiahai Yu,Xiong Yang,Lei Xiao,Shizhu Song,Jiayue Chen,Liwen Cao,Min Xia,Pan Wu,Kewu Pi,Guohong Qiu
Lignin derived from papermaking black liquor is an abundant and economical biochar precursor, however, its direct pyrolysis products often exhibit limited adsorption capacity for heavy metal ions due to their inherent poor pore structure. In order to improve the adsorption ability of lignin-based biochar, an electrochemical adsorption strategy was used to significantly enhance its removal performance for heavy metal in this study. Using alkali lignin and sodium lignosulfonate as precursors, biochar electrodes were prepared via direct pyrolysis. Their physical and chemical properties were comprehensively compared, and their selective electrochemical adsorption efficiency for Cd 2+ in high-salt wastewater was systematically evaluated. The effect of the applied voltage was investigated, and 1.2 V was determined as the optimal operating voltage within the tested range. Under this condition, alkali lignin biochar (AL-BC) exhibited a maximum electrochemical adsorption capacity of 409.3 mg g −1 , significantly exceeding the 82.8 mg g −1 observed for sodium lignosulfonate biochar (LS-BC). The electrochemical process increased the adsorption capacity of AL-BC and LS-BC by about 6.95 and 3.53 times, respectively. Quantitative analysis of electrochemical adsorption mechanisms revealed that the selective capture of Cd 2+ on AL-BC was primarily governed by chemical adsorption mechanisms. Surface precipitation was the dominant contributor (67.1 %), followed by ion exchange (26.2 %), whereas EDLs adsorption (4.8 %) and surface complexation (2.0 %) played minor roles. This study revealed the potential of lignin biochar as a highly efficient and selective electrochemical adsorbent for heavy metal ions in wastewater, providing a new strategy for the high-value utilization of lignin.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Mingjun Zou,Yikun Ji,Bin Liu,Shujuan Liu,Qian Ye,Feng Zhou
Hydrogels exhibit great potential in marine antifouling applications due to their ability to form a surface hydration layer that resists microbial adhesion. However, their practical application is often hindered by poor mechanical properties and limited antifouling performance. To address these challenges, nanomaterials have been employed to enhance hydrogel performance. Herein, we functionalized MXene nanosheets by grafting methacryloxyethyltrimethyl ammonium chloride (METAC) microgels, followed by electrostatic adsorption of sodium lignosulfonate (SLS), resulting in functionalized MXene nanosheets with enhanced antibacterial and antifouling properties. These nanosheets were then embedded within hydrogel matrix to form nanocomposite hydrogels. The reinforced internal crosslinking network significantly improved the mechanical performance, increasing tensile stress from 55 KPa to 167 KPa and tensile strain from 636 % to 971 %. The MXene-METAC-SLS/Gel also exhibited excellent antifouling performance, achieving antibacterial rates of 91.0 % and 93.1 % against Staphylococcus aureus and Escherichia coli , along with algal removal rates of 83.5 % and 85.1 % for Dunaliella and P orphyridium , respectively. The incorporation of functionalized nanosheets not only enhanced antimicrobial capability but also strengthened the surface hydration layer, further resisting microbial adhesion. This study expands the potential applications of nanocomposite hydrogels in marine antifouling coatings.
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MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2025
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IF 2.7
Siriguleng Bao,Yong Sheng Bao,Agula Bao
Lignin has a high carbon content, but the production of porous carbon materials from it is challenging because of its complex structure and stable physicochemical properties. In this study, nitrogen-doped porous carbon materials are prepared by impregnating lignin with urea, using potassium hydroxide (KOH) as an activator. The physicochemical properties of the samples are investigated using various characterization methods. The results showed that the CO 2 adsorption capacity of the sample LUN-10-7, which has a urea solution concentration of 10% and an immersion time of 7 days, is 3.80 mmol g −1 at 1 bar and 298 K. The characterization results indicated that the abundant pore structure and excellent surface chemistry enhanced the sample's CO 2 adsorption performance. Additionally, the sample demonstrated high CO 2 /N 2 selectivity and cyclic stability, making it suitable for practical applications as an adsorbent.
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Advanced Science
·
2025
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IF 14.1
Zhimin Kou,Ye Sha,Lihong Hu,Meiting Liu,Fuchun Huang,Jie Wang,Caiying Bo,Yonghong Zhou,Dawei Zhao,Puyou Jia
Ionogels have emerged as a groundbreaking category of materials for flexible electronics, yet the challenge of integrating high mechanical stretchability, rapid electrical response, and reliable self-repair in bio-based ionogels persists. Here, a lignin-derived ionogel is presented, designated P(LA-TA)-gel, through a straightforward, one-step solvent-free process. By leveraging arginine-grafted lignin-terminated polythioctic acid and incorporating imine and hydroxyl groups into the supramolecular framework, the P(LA-TA)-gel with both dynamic disulfide bonds and supramolecular hydrogen bonds achieves effective energy dissipation channels. This configuration adeptly balances mechanical stretchability—exhibiting a strain of 1233%—with dynamic reversibility, evidenced by an adhesion strength of 335.5 kPa. Notably, the P(LA-TA)-gel showcases rapid response characteristics, achieving a response time of 0.1 s, along with high ionic conductivity of 17.36 mS cm −1 and robust self-healing capabilities exceeding 90%. When utilized in flexible sensors, this ionogel demonstrates a wide response range and high sensitivity. This study establishes a sustainable platform for the development of next-generation flexible sensors and highlights significant potential applications across wearable electronics, electronic skin technology, and soft robotics.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xuan Liu,Jianfeng Zhan,Shixue Ren,Lina Jia,Tengfei Hu
To address the growing demand for sustainable smart materials, a novel strategy was used to design lignin-reinforced photothermal shape memory polymers (ELBEs) incorporating dynamic boronic ester bonds. 1,4-Benzenediboronic acid serves as a dual functionality crosslinker that covalently bridges enzymatic lignin and poly(ethylene- co -vinyl alcohol) through boronic ester bonds. The resulting dynamic covalent networks reinforce and toughen the ELBEs, without complex chemical modifications. The ELBEs have an excellent balance of toughness and strength, with tensile strength, fracture strain and Young's modulus as high as 50.1 MPa, 102 % and 636.3 MPa, respectively. This comprehensive performance exceeds that of most existing lignin-containing shape memory materials. The dynamic boronic ester bonds confer rapid stress relaxation, water-assisted room temperature self-healing and solvent cycling performance, while intrinsic photothermal conversion by lignin confers excellent light-controlled shape memory performance. To illustrate utility, an optimized ELBE was successfully used as a photo-responsive circuit protection device. The superior photothermal properties of the optimized ELBE also allow generation of electricity when the material is incorporated into a thermoelectric generator, highlighting its excellent light-thermal-electricity conversion. Despite the relatively low proportion of EL in ELBE materials (ranging from 2 to 8 wt%), its high functional efficiency significantly enhances various properties of the system. This work not only provides a novel paradigm for the development of recyclable smart materials suitable for use in flexible electronics and green energy generation, but also offers a new strategy for high-value utilization of lignin.
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CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Sabarinathan Ravichandran,Shuhua Hao,Fangbao Fu,Zihong Zu,Xueqing Qiu,Wenli Zhang
Developing an efficient bifunctional electrocatalyst in the oxygen reduction and evaluation reactions (ORR/OER) remains a major challenge for practical applications of zinc-air rechargeable batteries (ZABs). Herein, we designed a simple approach for fabricating heteroatom-doped (N and P) porous carbon materials using a controlled lignin-supermolecule aggregate that uniformly distributes lignin macromolecules in Lewis acid-base supermolecules. The obtained lignin derived N, P doped carbon (LNPC) with topological defects was prepared by direct pyrolyzing lignin-supermolecule aggregate at high carbonization temperatures. LNPC-1000 exhibited an excellent ORR activity with a high kinetics current density of 25.17 mA cm −2 at 0.85 V, and a superior bifunctional performance (ORR/OER) of a lower ∆E value of 0.87 V, surpassing the benchmark commercial Pt/C electrocatalysts. Besides, a rechargeable zinc-air battery using LNPC-1000 catalyst as the cathodes possesses a high specific capacity of 784.6 mAh g −1 and power density of 143.5 mW cm −2 along with an excellent charge-discharge stability (cumulative 1200 h). Density functional theory (DFT) indicates that heteroatom-doped (N and P) porous carbon with topological defects enhances the bifunctional catalytic effectiveness and can be utilized for practical ZAB applications.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Bingqing Fu,Yihua Xu,Jun Yang,Hongyan Li,Fangtao Xiong,Lizheng Sha,Huifang Zhao,Xiaohong Chen,Jing Li
To achieve high-value utilization of lignin, kraft lignin (KL) extracted from eucalyptus pulping black liquor was modified by demethylation using Lewis acids AlCl 3 (AL) and HBr (HL) and used to partially substitute of polypropylene glycol (PPG) to prepare lignin-based waterborne polyurethane (WPU) emulsion by reacting with isophorone diisocyanate (IPDI). The results of 1 H NMR spectra showed that the hydroxyl content of lignin were respectively 10.13 mmol/g and 8.31 mmol/g after demethylation with AlCl 3 and HBr, which were 73.2 % and 43.1 % higher than that of KL. When 20 wt% of PPG was replaced by AL and HL, the prepared ALWPU-20 % and HLWPU-20 % emulsions had good dispersion and storage stability, with an average particle size of 400 nm and a viscosity of 35.3 Pa·s and 24.5 Pa·s, respectively. Both ALWPU-20 % and HLWPU-20 % films had good mechanical strength, thermal stability and biodegradability, and their crosslinking density, tensile strength and natural degradation rate after 100 days’ landfilling were 19.1 mmol/cm 3 and 17.2 mmol/cm 3 , 10.9 MPa and 10.3 MPa, and 19.21 % and 21.21 %, respectively. Moreover, ALWPU-20 % and HLWPU-20 % films had excellent ultraviolet (UV) shielding performance and the UV light transmittance of them was nearly zero. Compared with HL, AL had higher reactivity and ALWPU-20 % emulsion and film had better comprehensive performance.
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CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Shuhua Liang,Zhaohui Liang,Minting Liang,Liheng Chen,Jiayi Zheng,Xueqing Qiu
Fatty acid phase change materials encounter leakage issues during phase transition and limited single working temperature in practical use. Therefore, our study developed temperature-responsive phase change microcapsules by compounding lauric acid-stearic acid eutectics (LA-SA) with lignin. Alkali lignin-based AL/LA-SA capsules exhibit stable nanostructure, tunable phase transition temperature within the range of 36–39 °C, which can be adjusted to approach human body temperature, excellent phase change performance with low supercooling, wide operating temperature range, and maintained stability over 50 cycles. Experimental and DFT calculations reveal synergistic effects between lignin’s hydrophilic and hydrophobic groups enable efficient PCM encapsulation and provide nucleation sites for supercooling suppression, offering new theoretical basis for PCM supercooling regulation. Temperature-controllable phase change capsules show broad application prospects, facilitating targeted development and efficient utilization of phase change materials.
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GREEN CHEMISTRY
·
2025
·
IF 9.2
Qian Jiang,Shuguang Xu,Zuzhi Li,Xingjie Guo,Rui Zhang,Zhicheng Jiang,Bi Shi
The design of heterogeneous catalysts to enhance substrate adsorption and hydrogen spillover plays a key role in the hydrogenation of biomass-derived chemicals. Herein, a composite catalyst support featuring a nano-SiO2 core and a nitrogen-doped carbon shell was developed for Pd loading (Pd/SiO2@NC). Following NC coating, the pyridine-N and pyrrole-N in the porous NC shell interacted with Pd through their lone pair electrons, enabling the anchoring and dispersion of Pd nanoparticles. The incorporation of SiO2 with NC notably increased the electronegativity at the interface, improving the vanillin (VAN) adsorption through both VAN-Pd and VAN-SiO2@NC interactions. Moreover, electron transfer between SiO2 and NC promoted hydrogen spillover, effectively lowering the energy barrier for the hydrogenation process. Consequently, >99% of VAN was completely hydrogenated to vanillyl alcohol over Pd/SiO2@NC under mild conditions (0.5 MPa H2, 20 °C, 60 min). The catalyst exhibited widespread activity for various lignin-derived aromatic aldehydes, indicating considerable potential for industrial applications. This study constructed the active catalyst surface that successfully synthesized aromatic alcohols from renewable lignin-derived compounds, effectively replacing traditional synthesis process.
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Journal of Composites Science
·
2025
·Vol. 9
·期 5
·223
·
IF 3.7
Zhi-Hong Ren,Xiao-Ying Li,Yan-Qing Zhao,Yong-Sheng Li,Qiang Wang,Jie-Ping Jia,Julio Sánchez,Kai-Ruo Zhu,Shangru Zhai,Ling-Ping Xiao,Run-Cang Sun
In this study, a novel lignin-based magnetic composite with a shell-and-core structure and high saturated magnetic strength has been developed for the efficient removal of Pb(II) from wastewater. The adsorbent was fabricated through the introduction of silica–amino groups and a cross-linking complex with lignin, utilizing Fe-Fe2O3as a magnetic source. The paramagnetic characteristics enabled its rapid separation from the aqueous solution within merely 15 s. Batch adsorption experiments demonstrated that the adsorbents could reach equilibrium for Pb(II) adsorption within 30 min. When the concentration of Pb(II) is in the low range of 0 to 200 mg/L, the removal rate of Pb(II) approaches 100%, and the theoretical maximum adsorption capacity is as high as 384.2 mg/g. The mechanism analysis indicated that the adsorption process was primarily characterized as monolayer chemisorption. Notably, the resultant bio-composites demonstrated a high level of stability even after eight consecutive adsorption and desorption cycles, with the removal rate of Pb(II) still reaching 82.3%. This work outlines a novel approach for designing highly efficient lignin-derived adsorbents toward wastewater treatment.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
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IF 3.9
Zitao Yu,Xiyan Dong,Danyang Cao,Zhongfan Luo,Yongguang Yu,Huaze Sun,Zhenyuan Xiao,Jiahua Zhu,Xiaohua Lu,Liwen Mu
Lignin, as a renewable and sustainable additive to replace traditional rubber additives, holds great potential in the development of green tires. However, its application is limited by its complex and heterogeneous structure and its poor compatibility with rubber. This study focuses on the complex structure of lignin, using the Pearson correlation coefficient (PCC) and Spearman correlation coefficient (SCC) to deeply analyze the intrinsic relationship between its structural features and rubber performance. The experimental results demonstrate that the incorporation of lignin significantly enhances the plasticity of rubber materials. Meanwhile, PCC and SCC reveal a significant correlation between the hydroxyl group density in lignin and the performance of rubber. Specifically, an increase in hydroxyl group density contributes to the enhancement of rubber plasticity while concurrently leading to a reduction in its strength. This finding provides important theoretical guidance for the molecular design of lignin-based rubber additives while also confirming the feasibility of lignin as a green rubber additive. Additionally, it offers a new perspective for using data analysis methods to investigate the influence of lignin structure on material properties.
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