INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Fang Yuan,Xiangyang Lan,Fuguang Ban,Yanchun He,Meiqing Wei,Chunyan Wang,Xuezhu Xu,Haohe Huang,Chongxing Huang
Deep eutectic solvents (DESs) have gained increasing attention owing to their effectiveness in extracting lignin from biomass. This study aims to investigate the mechanism of selective extraction of lignin from bagasse by adjusting the ratio of oxalic acid (OA) to lactic acid (LA) within a choline chloride (ChCl)-based ternary DES. The objective is to obtain bagasse cellulose and lignin of different qualities. The experimental results indicated that incorporating OA into the ChCl/LA DES system successfully reduced the lignin content in bagasse cellulose from 16.51 wt% to 8.75 wt% and generated bagasse with a more uniform morphology. This study also examined how ratio variations in the ternary DES influenced the molecular weight, degree of polymerization (DP), and elemental/structural compositions of both lignin and bagasse cellulose, thereby providing insights into the underlying mechanisms. The excessive amounts of OA tended to break the β-O-4 bond within lignin and disrupt fiber uniformity. Overall, this study investigated the roles of different components in the ternary DES in producing wood fiber materials of various qualities, providing a theoretical basis for the comprehensive utilization of cellulose materials.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
Peng Qiannan,Zhao Cheng,Wang Xiaopeng,Cheng Kelin,Wang Congcong,Xu Xihui,Lin Lu
Lignin, as the abundant carbon polymer, is essential for carbon cycle and biorefinery. Microorganisms interact to form communities for lignin biodegradation, yet it is a challenge to understand such complex interactions. Here, we develop a coastal lignin-degrading bacterial consortium (LD), through “top-down” enrichment. Sequencing and physiological analyses reveal that LD is dominated by the lignin degrader Pluralibacter gergoviae (>98%), with additional rare non-degraders. Interestingly, LD, cultured in lignin-MB medium, significantly enhances cell growth and lignin degradation as compared to P. gergoviae alone, implying a role of additional outliers. Using genome-scale metabolic models, metabolic profiling and culture experiments, modeling of inter-species interactions between P. gergoviae , Vibrio alginolyticus , Aeromonas hydrophila and Shewanella putrefaciens , unravels cross-feeding of amino acids, organic acids and alcohols between the degrader and non-degraders. Furthermore, the sub-population ratio is essential to enforce the synergy. Our study highlights the unrecognized role of outliers in lignin degradation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Catalysis Science & Technology
·
2024
·Vol. 14
·期 4
·973-979
·
IF 4.4
Peidong Ren,Lei Shi,Ziwang Kan,Jiaxiao Bai,Yunyi Liu,Shucheng Yang,Siqi Li,Song Liu
The electrochemical conversion of lignin for the production of high-value aromatic compounds holds immense potential. However, the process of depolymerizing lignin faces significant challenges due to its intricate structure, particularly the existence of C–C bonds, resulting in low conversion and product yields. In this work, we report the successful synthesis of a molecular palladium catalyst and its inaugural application in the electrochemical conversion of lignin model compounds. This catalyst with well-defined coordination structure demonstrates exceptional efficacy and achieves a remarkable 99% conversion rate for the lignin model compound 2-phenoxy-1-phenylethanol with a yield of 32% of the benzaldehyde product while valuable hydrogen is produced at the electrode under ambient conditions. Furthermore, employing radical trapping and EPR test point that the tBuO˙ radical was the key to inducing C–C cleavage for high conversion and enabled a comprehensive elucidation of the possible reaction pathways involving radical/radical cross-coupling. Based on this study, we believe that molecular catalysts will open a new chapter in the electrocatalytic conversion of lignin.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Shihao Feng,Qi Fan,Qin Ouyang,Xilin Zhang,Kun Liang,Qing Huang
Lignin-derived porous carbon (LDPC) is a low-cost and sustainable electrode material for supercapacitors . However, the complex three-dimensional amorphous structure of lignin brings challenges to the morphology and structure control of LDPC, which limits the electrochemical performance of these electrodes. Herein, a series of LDPCs with different particle morphologies and hierarchical pore structures are prepared by spray drying and KOH activation. It is found that the morphology and structure of LDPCs can be effectively controlled by adjusting the spray drying temperature and KOH ratio. A systematic investigation has been conducted on the relationship between the morphology and structure of LDPCs and their electrochemical performance. The preferred LDPC exhibits excellent electrochemical performance, showing high specific capacitances of 372.5 F g − 1 and 264.8 F g −1 at current densities of 0.2 A g −1 and 20 A g −1 , respectively, in the three-electrode test. The symmetric supercapacitor assembled with the LDPC electrode material exhibits superior cycling stability and energy density . After 10000 cycles of continuous charging and discharging at current density of 1 A g −1 , the specific capacitance retention is as high as 96.4%. When the power density is 493.3 W kg −1 , the energy density reaches ∼9.1 Wh kg −1 . This work offers a viable method for regulating the morphology and structure of LDPC electrode material for high-performance supercapacitor application.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Shitong Yu,Leilei Bie,Zhicheng Luo
Lignin is mainly composed of three basic C9 phenolic monomers, which makes it a formidable challenge to selectively produce C8 phenolic monomers, precursors for the ethylbenzene and styrene, due to intricate C–O and C–C cleavages. Here, we introduce a Ni 0.5% /AlN catalyst, featuring atomically dispersed Ni on a basic AlN support. The catalyst yields 52.7 % relative phenolic monomers with an unparalleled selectivity of 58.7 % for C8 phenolic species (Phenol, 4-ethyl, and Phenol, 4-ethyl-2-methoxy). The inherent basic sites within the AlN support crucially facilitate the formation of quinone intermediates, subsequently directed by single-atom Ni into C8 phenolic monomers. The catalyst showcases robust recyclability over five cycles, because of the strong interactions between Ni and AlN support. This study reveals a synergistic interplay between single-atom Ni and the basic support, paving a transformative pathway for the selective valorization of lignin.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Hongtao Zhu,Shifeng Zhang,Yongjun Chen,Xuejun Lai,Jianping Ding,Hongqiang Li,Xingrong Zeng
Flexible strain sensors have attracted great attention for their important application potential in soft robot, wearable device, electronic skin, and human–computer interaction, yet there are still challenges such as the loss of service life by external force and produced electronic waste that need to be solved. Herein, a self-healable, degradable, and reprocessable lignin-based polyurethane (LPU) elastomer was synthesized for a flexible strain sensor. Owing to the formation of a cross-linking network by lignin and the reinforcement role of unreacted lignin, the tensile strength and elongation at break of the LPU elastomer reached 2.72 MPa and 712%, respectively. The plentiful hydrogen and disulfide bonds endowed the elastomer with not only good self-healing capability but also superior reprocessing performance. Importantly, the elastomer was able to be completely degraded within only 2 h in 1 mol L–1 NaOH water/ethanol solution. The LPU elastomer-based flexible strain sensor with liquid metal (LM) as the conductive material was successfully applied to detect various human motions and could restore its sensing function with the healing of the substrate and reconnection of the LM conductive layer. Moreover, the LM in the discarded sensor could be easily recycled to prepare the sensor after the degradation of the LPU substrate. The functional and environmentally friendly biobased elastomer will greatly promote the sustainable development and application of flexible electronics.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 47
·21882-21894
·
IF 3.5
Hu Hao,Zhao Xia,Mao Xiang,Dong Yongrun,Li Wen,Xue Jinkun,Li Zequan,Gao Wei
White light-emitting diodes (WLEDs), as strong contenders for future solid-state light sources, hold significant promise in solid-state lighting due to their high efficiency, low power consumption, self-emission, and versatility. Carbon dots (CDs), a novel type of carbon nanomaterials, exhibit excellent luminescence properties. However, their intricate structure and unclear fluorescence mechanism hinder long-wavelength modulation, and solid-state aggregation leads to luminescence quenching, limiting their application in optoelectronic devices. This study focuses on the preparation of CDs with dual yellow–green emission peaks via a hydrothermal method using sodium lignosulfonate as a carbon source. The mechanism behind the dual emission is elucidated by analyzing the morphology and chemical composition of the CDs. Specifically, the green light originates from surface-related states due to N doping, while the yellow light results from the carbon-core state at higher hydrothermal temperatures. By incorporating these CDs into transparent wood, a material capable of emitting white light under blue light excitation is achieved. This transparent wood was successfully applied in the fabrication of WLEDs, providing valuable insights into CDs modulation and their utilization for white light solid-state lighting applications.
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2025
·
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.
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
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.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Weijie Lin,Dengwen Ning,Dezhong Xu,Shuai Wu,Qiuxia Zou,Ajoy Kanti Mondal,Fang Huang
This study compares the behavior of combined and free lignin on the cellulose enzymatic hydrolysis (EH). The combined lignin refers to the lignin naturally existed in the lignocellulose and the free lignin refers to the cellulolytic enzyme lignin. Three kinds of lignocelluloses (i.e., Moso bamboo, horsetail pine and aspen) are chosen for the research. Lignin is mainly biosynthesized of guaiacyl (G), syringyl (S), and p -hydroxyphenyl (H) structural units. The HSQC NMR analysis shows that the free lignin of Moso bamboo, horsetail pine and aspen are mainly composed of G-S-H, G-H and G-S type lignin units, respectively. Furthermore, a blood glucose meter (BGM), UV and fluorescence spectrophotometer are used to determine the cellulose conversion, enzyme adsorption and fluorescence intensities in the EH. It shows that the combined lignin has a weaker inhibitory effect on the EH breakdown than the free lignin. The influence of EH follows the order of Moso bamboo > aspen > horsetail pine. This study can be applied to the development of theoretical guidelines for mitigating the residual prohibition of lignin in the lignocellulose EH.
✓ 已验证
产品关联
DOI
高影响因子
Materials Horizons
·
2025
·
IF 10.7
Weijun Yang,Yu Zhang,Bing Li,Xiang Zhang,Debora Puglia,Deyu Niu,Pengwu Xu,Piming Ma
This work focuses on a simple approach for designing the polyurethane elastomers with ultra-robust properties. Initially, polyurethane/lignin elastomers were synthesized using polytetramethylene ether glycol (PTMG) as soft segment, hexamethylene diisocyanate (HDI) along with 4,4'-dihydroxydiphenyl ether (DO) as hard segments, and lignin nanoparticles (LNP) as the biomacromolecule crosslinker. Subsequently, the resulting elastomer were pre-stretched at certain ratios (λ), and surprisingly, the pre-stretched polyurethane/lignin elastomer (λ=14) displayed significant improvement in mechanical properties, while the tensile strength and toughness were sharply enhanced from 32.4 MPa and 298.7 MJ/m3 to 120.2 MPa and 501.3 MJ/m3, respectively. The improvement can be attributed to the denser cross-linked networks combined with the multiscale structure orientation and stress-induced crystallization (SIC) effects induced by pre-stretching. The interphase distance (d_p) decreased from 15.708 to 14.612 nm, while the interplanar crystal distance (d_c) increased from 4.387 Å to 4.398 Å, and the Herman orientation factor (f) increased from -0.0066 to 0.0518. This work presents a novel strategy for preparing polyurethane elastomers with exceptional mechanical performance.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2025
·
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.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）