Functional Materials Letters
·
2021
·
IF 2.17
Xi Xu,Junyuan Gan,Yun Huang,Jiapin Liu,Ling Zhao,Chengwei Li,Jiepeng Chen,Xing Li,Mingshan Wang,Yuanhua Lin
The adoption of gel polymer electrolyte (GPE) is a solution to efficiently solve the serious security risk of lithium-ion batteries (LIBs). GPE based on lignocellulose (LC) and sodium alginate (SA) was prepared. When the proportion of SA reaches up to 20 wt.%, the obtained composite membrane has a liquid electrolyte uptake of 337 wt.% and a porosity of 58%, and its mechanical strength is over four times than that of pure LC-based membrane. In addition, the corresponding GPE with 20 wt.% SA (GLCSA-20) presents high lithium-ion transference number of 0.76, distinguished ion conductivity of 2.70 × 10 − 3 S cm − 1 , excellent discharge specific capacity (124 mAh cm − 1 at 1 C when 200th cycle of Li∥GLCSA-20∥LiFePO 4 ) and outstanding cyclic stability. These virtues support that the GLCSA-20 has great potential for applications in safe LIBs.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Yang Wang,Qiaoling Liu,Chuanyu Yan,Guoyong Song,William S. Price,Gang Zheng,Allan M. Torres,Zhimin Xue
High-value utilization of lignocellulose and its components is generally constrained by the pretreatment efficiency and the structural robustness of fractionated components. Harsh pretreatment conditions can promote pretreatment efficiency but also cause serious condensation of lignin structure, thus inhibiting the depolymerization of lignin into valuable chemicals. Herein, we designed a novel deep eutectic solvent (DES) composed of pyridine hydrochloride, ethylene glycol, and AlCl 3 for the pretreatment of lignocellulose. In the developed DES, the lignocellulose could be efficiently fractionated into the natural lignin derivatives with satisfactory hydrogenolysis reactivity and the carbohydrate fraction with high enzymatic digestibility owing to the synthesized DES having adjustable hydrogen-bond acidity, high affinity for lignin, and good protection role on lignin structure. After being pretreated under a mild fractionation condition (70°C, 6 h), a promising delignification ratio of 70.4 % was obtained for poplar, and the extracted lignin exhibited native substructure with well-preserved β-O-4 linkages (42.1 per 100 aromatic units), abundant hydroxyl groups content (4.97 mmol/g), and high molecular weight (5643 g/mol). These structural features contributed to the conversion of the obtained lignin into aromatic monomers with a high yield (27.4 %). Besides, the pretreated residue could be efficiently converted into glucose with a yield of 88.2 % due to the abundant hydroxyl groups of lignin in the cellulose-rich residues. Remarkably, comprehensive studies of lignin structural evolution during pretreatment revealed that the structure-controllable lignin could be effectively isolated by modulating the hydrogen-bond acidity of DESs. This work proposed a mild and efficient lignin-first biorefinery approach that was conducive to the integrated valorization of lignocellulose.
研究领域:
生物质能
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化学工程
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环境科学
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高影响因子
ACS Applied Materials & Interfaces
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2021
·
IF 9.229
Cheng Rao,Maoliang Xie,Sicong Liu,Runlin Chen,Hang Su,Lan Zhou,Yuxia Pang,Hongming Lou,Xueqing Qiu
The photoreforming of lignocellulose is a novel method to produce clean and sustainable H2 energy. However, the catalytic systems usually show low activity under ultraviolet light; thus, this reaction is very limited at present. Visible light-responsive metal-free two-dimensional graphite-phased carbon nitride (g-C3N4) is a good candidate for photocatalytic hydrogen production, but its activity is hindered by a bulky architecture. Although reported layered g-C3N4 modified with active functional groups prepared by the chemical exfoliation enhances the photocatalytic activity, it lost the intrinsic structure and thus is not conducive to understand the structure–activity relationship. Herein, we report an intrinsic monolayer g-C3N4 (∼0.32 nm thickness) prepared by nitrogen-protected ball milling in water, which shows good performance of photoreforming lignocellulose to H2 driven by visible light. The exciton binding energy of g-C3N4 was estimated from the temperature-dependent photoluminescence spectra, which is a key factor for subsequent charge separation and energy transfer. It is found that monolayer g-C3N4 with smaller exciton binding energy increases the free exciton concentrations and promotes the separation efficiency of charge carriers, thereby effectively improving its performance of photocatalytic reforming of lignocellulose, even the virgin lignocellulose and waste lignocellulose. This result could lead to more active catalysts to photoreform the raw biomass, making it possible to provide clean energy directly from locally unused biomass.
研究领域:
能源科学
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材料科学
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环境科学
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高影响因子
BIORESOURCE TECHNOLOGY
·
2026
·
IF 8.2
Yuchong Liu,Guan Wang,Changwen Zhao,Wantai Yang
Visible-light graft polymerization enables topology-controlled polymer brushes. • Linear-bottlebrush brush achieves highest enzyme loading (0.25 mg/cm 2 ). • Immobilized cellulase retains 70 % activity after 8 reuse cycles. • LB-immobilized cellulase enables SSF with 0.6 g/L ethanol and 8-cycle reusability. By providing a flexible microenvironment, immobilization of cellulase on polymer brushes represents an effective strategy to improve the interactions of cellulase with the substrate in biomass conversion. However, manipulation of polymer brush morphology remains largely unexplored, owing to the lack of an effective synthesis strategy. Herein, we developed a versatile visible-light-induced graft polymerization strategy to precisely fabricate three types of polymer brushes with well-defined topologies on low-cost low-density polyethylene (LDPE) films. Benefiting from its unique three-dimensional high-density topology, linear-bottlebrush (LB) architecture exhibited a unique 3D high–density topology and achieved the highest enzyme loading capacity (0.25 mg/cm 2 ) and favorable enzymatic activity. The reusability was also demonstrated with 70 % of its initial activity remained after 8 reuse cycles for LB architecture. Furthermore, potential of LB brush-based immobilized cellulase in simultaneous saccharification and fermentation (SSF) of corncob for bioethanol production was demonstrated with its efficiency and reusability in practical biomass conversion processes. This study provides a synthetic methodology for constructing complex biointerfaces and establishes clear structure–property relationships, offering design principles for high-performance immobilized enzyme systems and advancing sustainable biomanufacturing. Download: Download high-res image (145KB) Download: Download full-size image
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高影响因子
ACS Sustainable Chemistry & Engineering
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2026
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IF 7.6
Deqing Wei,Xu Li,Xinyi Deng,Xiaohui Liu,Peng Lu,Feng-Wu Bai,Yong Guo,Feng-Li Zhang,Yanqin Wang
The high-value utilization of wheat straw, which is a major agricultural residue in China, is of significant importance. This study presents a mild and efficient process for the oxidative fractionation of wheat straw using a synergistic alkaline deep eutectic solvent (DES) combined with Fenton-like reagents (OH– + H2O2 + Fe2+). Under mild conditions (90 °C, 1 h), the process achieved 85.78% delignification while retaining 91.76% of the cellulose. Notably, the resulting pulp showed excellent digestibility, yielding 96.12% glucose and xylose with a very low cellulase loading (6 FPU of CTec3), which outperforms most state-of-the-art systems. Comprehensive investigations confirmed the critical role of alkaline DES and the enhancing effect of the Fenton-like reagents. Furthermore, the DES could be recycled ten times with only a minor reduction in fractionation efficiency. This work offers a promising strategy for the mild and sustainable biorefining of lignocellulosic biomass.
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高影响因子
POLYMER COMPOSITES
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2025
·
IF 4.7
Zhiqiang Shan,Xiaohua Jia,Jin Yang,Haojie Song
This paper shows a method for constructing wood-epoxy-based solid self-lubricating materials through in situ regeneration of lignocellulose (LC) and an LC-assisted mechanical ball-milling process, achieving a “three birds with one stone” benefit while optimizing the interfacial microstructure of the matrix/filler. Specifically, natural wood was dissolved in deep eutectic solvents (DES), resulting in the deconstruction of cellulose micro-nanofibers and the structural cracking and in situ regeneration of lignin to produce LC. The LC and flake graphite was ball-milled together to exfoliate graphite through molecular interactions and π−π conjugation between both. Furthermore, functional groups (hydroxyls, ether bonds, and aromatic rings) in LC can replace segments of the epoxy resin (EP) 3D cross-linking network, enhancing its curing performance. The cellulose micro-nanofiber formed a continuous interdigitated network within the EP matrix, thus improving the stress transfer capability of LC–Graphite–PEEK–EP (LGP–EP) composites. The LGP–EP further eliminate the brittle characteristics of the EP matrix upon curing and exhibits a tensile strength of 17.87 MPa, a toughness of 0.44 MJ/m 3 , and an ultra-low friction coefficient of 0.074, demonstrating robust self-lubricating capability. This research opens up a green and efficient strategy for preparing high-strength, high-stability, and solid self-lubricating functional wood–polymer composites.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Honggang Luo,Yifei Zhang
Efficient ionic thermoelectric (i-TE) conversion relies on maximizing the thermal diffusion asymmetry between cations and anions. However, sustainable strategies for directing cation-selective thermodiffusion through structural engineering remain largely underexplored. Here, we report an all-wood ionic gel (RW i-TE) that achieves superior thermopower enabled by a lignocellulose channel reconstruction strategy within the wood cell wall. Partial dissolution and regeneration of delignified wood, followed by reintroduction of sodium lignosulfonate (Na:lignin) under hydrogen bond-disrupting conditions (NaOH and urea), enables molecular-level integration between dissociated cellulose and Na:lignin, while simultaneously inhibiting microfibril reassembly. The resulting reconstructed lignocellulose ion channels, enriched with surface negative charges and spatially confined fixed anions, promote rapid and selective cation migration driven by a temperature gradient. As a result, the optimized RW i-TE achieves a high thermopower (S i ) of +39.1 mV K −1 and an ionic figure of merit (zT i ) of 1.68 at 50 % relative humidity, delivering an energy density of 68.75 J m −2 over 2 h of discharging under a 5 K temperature gradient in generator mode. Moreover, this strategy is compatible with various woody and gramineous biomass sources, offering a renewable alternative to polymer-ionic liquid gels by enabling structure-induced ion confinement within regenerated lignocellulose matrices.
研究领域:
材料科学
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能源技术
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高分子化学
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高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2025
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IF 6.2
Jingrui Liang,Jian Du,Xiujun Zhang,Mingxue Liu,Yamin Zhang,Nannan Chen,Wenjie Sun,Jingxuan Nie,Mengxian Liang,Pinwen Wang,Xinyu He
High-solids enzymatic hydrolysis is a key process for ensuring the economic feasibility of lignocellulose bioconversion. During enzymatic hydrolysis, the rate of cellulose conversion decreases markedly with increasing solids concentration, which is attributed to inhibition by soluble compounds. Thus, gaining insights into the inhibitory properties of these compounds is essential for reducing enzyme costs. During hydrolysis, glucose-induced inhibition accounted for more than 37 % of the total inhibitory effect after 24 h, and this inhibitory effect increased with time. The inhibitor-to-enzyme ratio was a critical factor influencing the extent of inhibition; however, cellulase was more sensitive to glucose inhibition at high concentrations. As such, glucose-induced inhibition could not be overcome by increasing enzyme loading within normal dosage ranges. Different enzyme components experienced varying degrees of inhibition, and the synergistic effects among these components were also considerably reduced. Glucose inhibition of endoglucanase II involved both competitive and noncompetitive modes, which included competitive binding of carbohydrate-binding modules to the substrate and overlapping binding sites on the catalytic channel of the catalytic domain. We propose that modifying these conflicting binding sites can reliably alleviate glucose inhibition. This study has implications for addressing severe enzyme inhibition and reducing costs in bioconversion processes at a commercial scale.
研究领域:
生物化学
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生物技术
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酶学
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可再生能源
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工业微生物学
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Lian-Jie Zhao,Jia-Ran Li,Yu Li,Li-Li Sun,Shao-Ni Sun,Xue-Fei Cao
The development of low-cost and high-performance water purification adsorbents has attracted increasingly attentions. In this work, corn stalk pith (CSP) and chitosan rich in amino groups were treated with ZnBr 2 ·4H 2 O to prepare lignocellulosic aerogels (LAs) and lignocellulose-chitosan composite aerogels (LCAs) for wastewater treatment. The effects of the ZnBr 2 ·4H 2 O treatment time and the addition of chitosan on the structure and adsorption performance of the aerogels were evaluated. The results showed that the lignocellulosic aerogel LA 15 had a three-dimensional porous structure and the optimal adsorption capacity of which reached 489.4 mg/g for Congo red. After the addition of chitosan, the adsorption performance and the adsorption behavior of LCA 10 for Congo red were evaluated in detail. The maximum adsorption capacity of the prepared LCA 10 for Congo red was up to 641.5 mg/g, which was 31 % higher than that of LA 15 . Adsorption kinetics suggested that the adsorption of Congo red on LCA 10 followed the pseudo-second-order kinetic and the Langmuir isotherm model, indicating that the adsorption was dominated by chemical adsorption and the adsorption of Congo red was mainly occurred on the surfaces of LCA 10 . This study provides a simple method for preparing high-performance dye adsorbents under mild conditions.
研究领域:
环境科学
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材料科学
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水净化
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聚合物复合材料
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产品关联
DOI
PubMed
高影响因子
BIORESOURCE TECHNOLOGY
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2023
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IF 11.4
Hanqi Gu,Xushen Han,Jian Zhang,Jie Bao
Dry acid pretreatment (DAP) as a promising process for industrial biorefinery provide an efficient bioconversion of cellulose without free wastewater, although the partial xylan and lignin degrade to inhibitors or recondense. A biorefinery strategy for carbon efficient conversion of lignocellulose into bioethanol, xylose , and reactive lignin was developed by upgrading DAP with post-hydrolysis. The results showed that lignocellulose after mild DAP (175 °C, acid dosage of 15 mg/g dry material) obtained higher xylan recovery and lower inhibitors than that of general DAP. Subsequently, post-hydrolysis, simultaneous saccharification and ethanol fermentation were performed at solids loading of 20 wt% without detoxification and sterilization, resulting in xylose and ethanol yield of 71.8 % and 67.6 %. The fractionated lignin presented more reactive β-aryl ether linkages and less condensation than that from DAP. 66 % of lignocellulose carbon was recovered as ethanol, xylose and reactive lignin. This upgrading biorefinery strategy provided an easy-to-operate process for integrated utilization of lignocellulose.
研究领域:
生物技术
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可再生能源
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DOI
PubMed
高影响因子
CELLULOSE
·
2018
·Vol. 25
·期 12
·7315-7328
·
IF 3.809
Zhang Lili,Lu Hailong,Yu Juan,Fan Yimin,Yang Yiqin,Ma Jinxia,Wang Zhiguo
Abstract A lignocellulose-based composite hydrogel, as a novel biosorbent, was prepared for Cu 2+ removal from wastewater. TEMPO-oxidized cellulose nanofibrils (TOCN) were dispersed in a 7 wt% NaOH/12 wt% urea aqueous solution at room temperature. Meanwhile, the dissolved cellulose was obtained in the same system at subzero temperature. The composite hydrogels were prepared by blending the dissolved cellulose solution, TOCN dispersion, and alkali lignin solution in an NaOH/urea aqueous solution. The composite hydrogel exhibits excellent adsorption capacity for heavy metals, which can be attributed to the synergistic effects of physical adsorption (porous 3D structure) and chemical adsorption (active sites: carboxyl and phenolic groups). The maximum amount of adsorbed Cu 2+ onto composite hydrogel can reach 541 mg/g, which was achieved after 45 min. The adsorption behavior is well-described by the pseudo-second-order kinetics and the Freundlich model (R 2 > 0.999). Furthermore, the composite hydrogel exhibits high-strength properties, indicating that the presence of TOCN and lignin contributes to mechanical improvements. Graphical abstract
研究领域:
环境科学
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材料科学
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高影响因子
Nature Energy
·
2019
·Vol. 4
·期 7
·575-584
·
IF 54
Luo Nengchao,Montini Tiziano,Zhang Jian,Fornasiero Paolo,Fonda Emiliano,Hou Tingting,Nie Wei,Lu Jianmin,Liu Junxue,Heggen Marc,Lin Long,Ma Changtong,Wang Min,Fan Fengtao,Jin Shengye,Wang Feng
Photocatalytic hydrogen production from biomass is a promising alternative to water splitting thanks to the oxidation half-reaction being more facile and its ability to simultaneously produce solar fuels and value-added chemicals. Here, we demonstrate the coproduction of H 2 and diesel fuel precursors from lignocellulose-derived methylfurans via acceptorless dehydrogenative C−C coupling, using a Ru-doped ZnIn 2 S 4 catalyst and driven by visible light. With this chemistry, up to 1.04 g g catalyst −1 h −1 of diesel fuel precursors (~41% of which are precursors of branched-chain alkanes) are produced with selectivity higher than 96%, together with 6.0 mmol g catalyst −1 h −1 of H 2 . Subsequent hydrodeoxygenation reactions yield the desired diesel fuels comprising straight- and branched-chain alkanes. We suggest that Ru dopants, substituted in the position of indium ions in the ZnIn 2 S 4 matrix, improve charge separation efficiency, thereby accelerating C−H activation for the coproduction of H 2 and diesel fuel precursors.
研究领域:
化学
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材料科学
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可再生能源
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催化
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高影响因子
危险品化学品经营许可证（带存储）