SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Xiaonuo Xu,Yueli Wen,Yuxuan Zhao,Bin Wang,Maohong Fan,Zhiju Chen,Shiyun Guo,Wei Huang
As the primary byproduct of paper making industry, alkali lignin can lead to biological anoxia and disrupt aquatic ecosystems. Application of it in wastewater treatment can not only realize its high value utilization, but realizing reduction of carbon emission. In this study, a renewable alkali lignin-modified MOFs adsorbent AL@PCN-250 was prepared by in-situ synthesis strategy and was used to adsorb and remove Methylene blue (MB) and Rhodamine B (RhB) from textile wastewater. The effects of adsorbent dosage, pH, contact time, and initial concentration on the adsorption behavior of RhB and MB by AL@PCN-250 were investigated to evaluate its adsorption capacity and reusability. The results showed that the maximum adsorption capacities of AL@PCN-250 for RhB and MB were 299.292 mg g −1 and 209.260 mg g −1 , respectively. The Sips models fitted the adsorption isotherms well, indicating that the adsorption sites on the surface of AL@PCN-250 are heterogeneous, with varying affinities for the adsorbates. Notably, after six cycles, the removal efficiency of AL@PCN-250 for the two dyes remained above 80 %. Experimental and theoretical calculations revealed that adsorption mainly involved hydrogen bonding, Van der Waals’ force, π-π interactions, and electrostatic interactions. This study provides new insights into the high-value utilization of lignin and the synthesis of efficient adsorbents.
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GREEN CHEMISTRY
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2024
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IF 9.3
Jie Li,Pengpeng Shao,Weijie Geng,Peng Lei,Jing Dong,Yingnan Chi,Changwen Hu
The oxidative depolymerization of β-O-4 linkages into value-added aromatic chemicals is of great importance for lignin valorization. However, achieving highly selective and rapid cleavage of β-O-4 linkages under mild conditions remains a challenge. Herein, cobalt–cobalt oxides (Co-CoOx) supported on N-doped carbon (CoMA/C900) combined with a green and recyclable base K7HNb6O19 (KNb6) have shown remarkable activity for the one-step oxidative cleavage of lignin β-O-4 linkages. Under relatively mild conditions (100 °C, 0.2 MPa O2), a lignin β-O-4 alcohol model compound was almost completely converted within 3 h, affording a narrow product distribution of phenol (yield: 99%) and methyl benzoate (yield: 98%). Based on the control experiments, kinetic study, and spectroscopic analysis, a synergistic oxidative cleavage mechanism was proposed: CoMA/C900 activates molecular oxygen to form a superoxide radical, while basic KNb6 promotes deprotonation of secondary alcohol, and they synergistically catalyze the oxidation of β-O-4 alcohol and the rapid cleavage of Cβ–O and Cα–Cβ bonds. During the reaction, the oxidation of β-O-4 alcohol to β-O-4 ketone is the rate-determining step, while the cleavage of PP-one to phenol and methyl benzoate can be completed within 15 min. Moreover, the CoMA/C900–KNb6 catalyst is recyclable at least three times and highly active for the oxidative cleavages of other lignin models and organosolv birch lignin.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Juping Liu,Changzhi Li,Yang Yang,Yingquan Chen,Hanping Chen,Xianhua Wang,Haiping Yang
Lignin-derived oxygenated aromatic compounds have the potential to serve as renewable feedstocks to cycloalkanes that can be used as liquid organic hydrogen carriers. In this work, different trimetallic hydrotalcite-based catalysts were prepared for the hydrodeoxygenation of lignin monomers into cycloalkanes. The results showed that the RuNiAlO x catalysts possessed unique flower-like pore structure, excellent surface properties, abundant active and acidic sites, strong adsorption capacity, and oxygen vacancies, which jointly determine the superb performance of RuNiAlO x catalysts in catalyzing a spectrum of lignin monomers into cycloalkanes. Using vanillin as the substrate, the conversion reached 100 % to afford cycloalkane in yield up to ∼99 % at 260 °C, 2 MPa H 2 and 3 h. The present study offers the possibility of an efficient conversion and utilization of lignin oil, which is expected to alleviate the challenges associated with hydrogen storage and transportation.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Yudong Huo,Shiqi Yuan,Na Zhang,Chun Pei,Yuwei Pan,Ying Zhang,Xiang Mei,Weichuan Qiao,Lijie Xu,Lu Gan
The mechanism of producing iron-carbon composites with different crystal structures by varied wood-based biomass remains unclear. Herein, cellulose and lignin as the important components of wood-based biomass were used to investigate the influence on the crystal structure of iron-carbon composites. Results showed that Fe 3 C could only be produced in cellulose-containing pyrolysis processes, while the pyrolysis of lignin could reduce the iron salt to Fe 0 . Additionally, prolonging pyrolysis time and increasing the ratio of cellulose to Fe also favored the production of Fe 3 C. When applied to activate peroxymonosulfate (PMS), the Fe@Cel 0.5 -4 typically dominated by Fe 3 C showed better performance than Fe@Ln 1.0 -4 which was dominated by Fe 0 in the aspects of adsorption, electron transfer, retaining the iron species, sustainability, adaptability to complex water conditions, and the catalytic capability to degrade diclofenac (DCF). Quenching experiments and electron spin resonance results indicated the presence of free radicals ( OH, SO 4 − , SO 5 − and O 2 − ) and non-radical ( 1 O 2 and electron transfer process) pathways in both processes. However, the degradation of DCF in Fe@Cel 0.5 -4/PMS process was mainly dominated by 1 O 2 and electron transfer while was contributed by radical and nonradical pathways almost equally in Fe@Ln 1.0 -4/PMS process. This study may cast some light on the development of iron-carbon composites using wood-based biomass as the carbon source to synthesize the highly efficient catalyst for PMS activation.
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FOOD CHEMISTRY
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2024
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IF 8.5
Jin Liu,Yuanjun Nie,Yu Niu,Li Li,Xu Jing
A universal, green, and rapid lignin-based emulsive liquid-liquid microextraction (ELLME) method was established to detect nine triazole fungicides in water, juice, vinegar , and alcoholic beverages via UHPLC-MS/MS. By employing an environmentally friendly emulsifier (lignin), the proposed ELLME was compatible with more extractants, and not restricted to fatty acids. Due to the high amphiphilic properties and three-dimensional structure of lignin, the emulsion was quickly formed through several aspirate-dispense cycles of the green extractant (guaiacol) and lignin solution. And a micropipette was used for rapid microextraction . The limit of detection was 0.0002–0.0057 μg L −1 . The extraction recoveries and relative standard deviation were 81.7%–102.0% and 0.9%–7.1%, respectively. Finally, three green metric tools were used to verify the greenness of the whole procedure. The proposed lignin-based ELLME successfully emulsified green solvents , indicating that emerging solvents may be excellent alternatives as extractants in ELLME for pesticide residue analysis in food samples.
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PubMed
高影响因子
Journal of Energy Storage
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2024
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IF 8.9
Leyi Wang,Wenbin Jian,Zhu Jiang,Bingchi Wu,Xihong Zu,Gaixiu Yang,Wenli Zhang,Xueqing Qiu
Zinc-ion hybrid supercapacitors is a new type of electrochemical energy storage device that could realize high power density and high energy density . However, porous carbon cathode has a high cost of production due to the expensive precursors and excessive consumption of activation agents. Here, a hierarchical porous carbon was prepared by one-step carbonization of lignocellulose-based hydrogels containing alkaline activation agent. This strategy enables the activation agent to be uniformly dispersed in the lignocellulose precursor, which effectively utilizes the activation agent and thus reduces the amount of the activation agent (w(KOH)/w(precursor) <1). Moreover, the porous carbon could partially retain the macroporous and mesoporous structures formed in the lignocellulose-based hydrogel. The obtained porous carbons feature abundant mesopores (average pore sizes of ∼2.0 nm and mesopore ratio of 15.0 % – 79.8 %) and high specific surface areas (1358–1819 m 2 g −1 ). The zinc-ion hybrid supercapacitors with an obtained porous carbon cathode displayed a specific capacitance of 292.4 F g −1 , high rate capability, and long cycle stability (95.4 % capacitance retention after 12,000 cycles at 2 A g −1 ). In addition, we found that the pores larger than 0.65 nm could improve the storage efficiency of zinc ions.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Yu-Qin Yang,Xiao-Wen Pang,Zi-Fan Zeng,Zhi-Chao Xu,Yu-Qing Qin,Li-Xiu Gong,Haichang Ding,Jinfeng Dai,Shi-Neng Li
Conductive hydrogels have been showcased with substantial potential for soft wearable devices. However, the tedious preparation process and poor trade-off among overall properties, i.e., mechanical and sensing performance, severely limits flexibility of electronics' applications. Herein, we have developed a rapid self-gelation system for achieving high-performance conductive hydrogel within several minutes at ambient condition. The rapid gelation mechanism is attributed to the hydroxyl radical species generated with the help of lignin nanoparticle-M n+1 (Ag + , Ca 2+ , Mg 2+ , Al 3+ and Fe 3+ ) based on reversible redox reaction and MXene activization effect. By adjusting the material components, the cross-linked polymer network can be highly strengthened by multiple physical interactions and nano-reinforcement, strongly supporting the mechanical performance. Comparatively, Fe 3+ -based conductive hydrogel displays integrated merits of mechanical robustness, high stretchability and good electrical conductivity. Meanwhile, due to excellent mechanical and electrical performance, such hydrogel-based sensor possesses good sensing performance, i.e., high sensitivity (maximum GF: 1.08), cyclic reliability and wide work window (0–860 %), displaying promising application in strain-induced detection. Our sensors also produce stable and reliable signal output for signature/vocal recognition. Apparently, the strategy developed herein sets up an innovative concept for highly-efficient green fabricating advanced hydrogel materials for emerging wearable electronics.
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PubMed
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PROGRESS IN ORGANIC COATINGS
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2025
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IF 7.3
Xin Lai,Jianfeng Hu,Jinqing Qu
Developing epoxy (EP) anti-corrosion coatings with ultraviolet (UV) resistance by incorporating natural fillers remains a significant challenge. Herein, a functionalized biomass filler (LMNS@PDA/ODE) is synthesized via sequentially grafting polydopamine (PDA) and low surface energy substances (ODE) on the surface of lignin micro-nanospheres (LMNS) and further preparing a multifunctional LMNS@PDA/ODE-EP coating for corrosion protection of carbon steel. As expected, LMNS@PDA/ODE exhibits excellent dispersion stability in EP and endows the composite coating with a high adhesion strength (5.9 MPa). Benefiting from the reinforced physical barrier (a water absorption rate of 0.55 %) and superhydrophobic performance (a surface free energy of 4.65 mJ∙m −2 ), the initial impedance modulus (|Z| 0.01 Hz ) of 2LMNS@PDA/ODE-EP coating (8.05 × 10 8 Ω∙cm 2 ) is significantly higher than that of EP coating (8.91 × 10 4 Ω∙cm 2 ) after immersing in 3.5 wt% NaCl solution for 50 days. In addition, 2LMNS@PDA/ODE-EP coating exhibits excellent UV-blocking properties, as demonstrated by the high |Z| 0.01 Hz of 4.86 × 10 9 Ω∙cm 2 , as well as the low gloss loss (11.0 %) and minimal color difference (2.2). Furthermore, the superhydrophobicity of the 2LMNS@PDA/ODE-EP coating is capable of restoration after simulating sunlight exposure for 10 min under 200 mW·cm −2 owing to the efficient photothermal conversion performance. Therefore, this work provides a multifunctional coating for long-term corrosion protection, facilitating the value-added utilization of lignin and the development of environmentally friendly coatings.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Yuanlong Guo,Juchun Liu,Tianlong He,Tao Wu,Tonghui Xu,Yunqi Li,Haibo Xie
Traditional phenolic resins (PF) are extremely widely applied in industrial and daily life due to their low cost and outstanding adhesion. However, they are also limited by the toxicity of phenol and formaldehyde as well as the petroleum-based origin at the same time. Herein, a comprehensive strategy for the development of formaldehyde-free lignin-based furfural resin (LFR) with dual functions for adhesive and photothermal conversion materials was presented. Firstly, a newly developed phenolated lignin was obtained via the transesterification of 3,4-dihydrocoumarin (DHC) and aliphatic hydroxyl group of lignin under organocatalysis. Then, the phenolated lignin can be regarded as a highly versatile and precise building block polymer for the design and development of LFR. LFR exhibited excellent adhesion performance from 1.12 to 2.75 MPa on various substrates. Additionally, the low-temperature and wet adhesion strength of LFR were also investigated. Different from traditional thermosetting PF, LFR was hot-melt and possessed outstanding photothermal conversion and hydrophobicity properties, which provided the possibility for its use as a photothermal power generation coating and anti/de-icing material. The maximum temperature and output voltage as well as current of LFR-2 coating could reach 154 °C, 310 mV and 43.2 mA via a thermoelectric generator, respectively. Finally, the hydrophobic, smooth and self-cleaning surface of LFR-2 could effectively help melt and remove ice even in a − 20 °C environment, which was beneficial for the utilization of photothermal material in real environment.
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GREEN CHEMISTRY
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2025
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IF 9.2
Weiyu Xia,Lupeng Shao,Chao Wang,Yu Liu,Xianhai Zeng,Feng Xu
Lignocellulose as an appealing renewable carbon resource holds great potential to produce high-value-added products. The implementation of an integrated pretreatment process that enables effective fractionation and targeted valorization is crucial for ensuring the feasibility of future biorefinery scenarios. In this study, a stepwise approach using formic acid (FA)–LiBr molten salt hydrate (LiBr MSH) pretreatment was successfully developed for producing high yields of xylose, glucose, glucan oligomers, and less-condensed lignin from poplar. Results showed that FA pretreatment removed the most hemicellulose, releasing a high yield (71.63%) of xylose at 160 °C for 1 h. Subsequent acidified LiBr MSH pretreatment at 100 °C for 0.5 h resulted in a remarkably high cellulose degradation rate of 84.55%, yielding 41.87% glucose and 42.68% glucan oligomers. Meanwhile, 95.57% purity of lignin with abundant uncondensed moieties (i.e., β-O-4 bonds, Hibbert’s ketones) was obtained. The proposed integrated FA–LiBr MSH pretreatment exhibited great potential as an efficient deconstruction strategy in the current biorefinery scenario.
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INDUSTRIAL CROPS AND PRODUCTS
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2024
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IF 5.6
Tao Wang,Wei Wang,Chunyan Hu,Jian Zheng,Baojiang Liu,Zhijia Zhu
Marine oil spill pollution poses a significant environmental issue, and its swift cleanup remains a global challenge and intricate dilemma. To address this problem, a polyvinyl alcohol/lignin-based multifunctional aerogel adsorbents were successfully crafted using unidirectional freeze-drying and chemical vapor deposition with alkali lignin (AL), poly(vinyl alcohol) (PVA), multi-armed carbon nanotubes (CNTs), and methyltrimethoxysilane (MTMS). These aerogels excel in photothermal conversion, leveraging lignin and CNTs' synergistic heat transfer. Swiftly warmed by sunlight, they reach surface temperatures of 76.1 °C and 96.0 °C in 120 s under 100 mW cm −2 and 200 mW cm −2 intensities. With an adsorption capacity 36–86 times its weight, the aerogel is reusable, maintaining 90 % efficiency after 10 cycles. Furthermore, it maintains high oil absorption rates in acidic, alkaline, high-temperature, and high-salt environments. Hence, this aerogel is promising for marine oil spill responses. Additionally, this work introduces a novel method for synthesizing high-performance oil-absorbing agents from biological resources, realizing the concept of waste-to-treasure and enhancing the high-value utilization of lignin.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Ishioma Laurene Egun,Bamidele Akinwolemiwa,Haiyong He,Mingchan Ma,Zhengfei Chen,George Z. Chen,Di Hu
Non-lignin-rich biomass has abundant reserves but remains underutilised as a sustainable carbon source for producing functional carbon materials in energy storage applications. The primary challenge is to develop an efficient and sustainable process to convert these resources into high-performance carbon as electrode active material for supercapacitors. To address this issue, a facile, low-cost molten base carbonisation and activation (MBCA) process is investigated to convert wet Radish (a non-lignin–rich biomass) into hierarchical porous carbon via a single thermal stage. This approach integrates carbonisation, in-situ activation, and heteroatom retention, yielding carbon with a specific surface area of 1172 m 2 g −1 , ultramicropores (0–0.7 nm), partial graphitic structure and nitrogen/oxygen-rich functional groups. The optimised carbon, obtained at 700 ˚C, as a supercapacitor electrode active material exhibited electrochemical performance, with a specific capacitance of 257F g −1 at 5 mV s −1 and 96F g −1 at 2 A g −1 , alongside remarkable cycle stability (92.6 % capacitance retention over 20,000 cycles) and low self voltage decay over 50 h. These results highlight the MBCA process as a viable solution for converting non-lignin-rich biomass into high-performance carbon materials, offering a practical and sustainable alternative for energy storage applications while mitigating environmental pollution from biomass decomposition.
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