ACS Catalysis
·
2024
·
IF 11.3
Haohan Wu,Bowen Liu,Yi Qi,Xueqing Qiu,Liheng Chen,Yanlin Qin
The electrocatalytic oxidation of 5-hydroxymethylfurfural (HMF) provides a viable pathway for the efficient utilization of biomass resources. However, designing and regulating the activity and selectivity of the corresponding electrocatalysts remain significant challenge. Spinel compounds show great potential as catalysts due to their adjustable electronic structures and notable catalytic properties, but their intrinsic low conductivity has limited their further application. Herein, a lignin-based carbon fiber (LCF) embedded CuFe2O4 catalyst (CuFe2O4/LCF) is successfully constructed using an electrospinning technique. The catalyst can efficiently and selectively synthesize 2,5-furandicarboxylic acid (FDCA) at a relatively low potential. The experimental results and theoretical simulations demonstrate that the introduction of lignin can significantly optimize the pregraphitic turbine carbon microstructure of the carbon fibers and facilitate rapid electron transfer between CuFe2O4 and the carbon layer. Furthermore, the ATd–O–BOh interactions on the surface of the CuFe2O4 spinel structure significantly enhance the adsorption capacity for the substrates and OH– species, effectively promoting the catalytic reaction. The findings hope to provide a unique perspective to improve the catalytic activity of lignin carbon fiber spinel catalysts and the stability of biomass value-added mechanism.
✓ 已验证
产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2024
·
IF 11
Jianming Tao,Qian Ma,Zehua Zhang,Zicong Hu,Lin Lei,Guohua Zhao
Sodium caseinate (Cas) is an attractive candidate for food emulsion formulation due to its surface-active properties as well as the ability to prevent the oxidation of encapsulation oils. However, the emulsions underwent destabilization near its isoelectric point ( pI, around pH 4.8) due to the lack of enough electronic repulsion. To overcome the drawback, colloidal lignin particles (CLPs) fabricated from dietary fiber with superior negative repulsion and abundant surface active sites will be inspiring as the patch of Cas-based emulsion. This study systemically explored the modified effect of varied CLPs concentrations in the Cas-based emulsions prepared at pH 4.8. Due to hydrophobic attractions and hydrogen bonds between protein and CLPs, the CLPs significantly increased the negative charge and viscosity of composites while reduced surface hydrophobicity of Cas. Thus, in contrast to Cas, Cas/CLPs complex can fabricate a more elastic oil-water interfacial film, accompanying with a reduced droplet size (52–136 μm). Despite the inhibition of Cas adsorption at interfacial film, Cas/CLPs complex increase the stability of emulsion mainly by increasing electrostatic repulsion, enhancing film elasticity, and thickening continuous phase. Emulsions fabricated with Cas/CLPs complex effectively protected polyunsaturated fatty acids from deterioration, with the lowest levels of hydroperoxide and malondialdehyde observed in Cas/1.00 %CLPs emulsion. This study uncovered the facts behind the non-covalent interactions of Cas and lignin and proposed a novel strategy to stabilize Cas-based emulsions in acidic conditions.
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2024
·
IF 13
Xiaoxue Wu,Zhiqiang Qi,Wenbin Zhang,Hongzhen Cai,Xiangsheng Han,Keyan Yang
Biomass-encapsulated liquid metals (LMs) composite gels have aroused tremendous attention as epidermal smart materials due to their biocompatibility and sustainability. However, they can still not simultaneously possess toughness, adhesion, and recoverability. In this work, the tough, sticky, and recyclable protein-encapsulated LMs organogels (GLM x ) are fabricated through the micro-interfacial stabilization of LMs by lignin and the following preparation of food-making inspired gels. With the help of lignin modification, the LMs micro-drops demonstrated uniform dispersion in the protein matrix, as well as dense non-covalent interactions (e.g., H─bond and hydrophobic interaction) with amino acid residues in peptide chains, which endowed the GLM x with high conductivity (≈5.4 S m −1 ), toughness (≈738.2 kJ m −3 ), self-adhesiveness (a maximal lap-shear strength of ≈58.3 kPa), and recoverability. By tightly adhering onto human skin, the GLM x can act as epidermal sensors to detect drastic (e.g., joint bending) and subtle body movements (e.g., swallowing) and even recognize handwriting and speaking in real-time. Moreover, the organogels can also harvest solar energy and convert it into heat and electricity, which is promising in self-powered intelligent devices. Thus, this work paves a facile way to prepare protein/LMs composite organogels that are suitable for multiple applications like healthcare, human-robot interactions, and solar energy conversion.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DIAMOND AND RELATED MATERIALS
·
2025
·
IF 5.1
Qiujie Gao,Kai Liu,Miaoyan Hu,Shiyu Gao,Li Xu,Hailan Lian,Changyan Xu
Efficient utilization of lignin, an abundant yet underutilized biomass resource, is essential for sustainable development and advancing functional material innovation. However, strategies for transforming lignin into practical sensing materials remain limited. In this study, carbon quantum dots (CQDs) were synthesized using lignin as a carbon source through a simple one-pot hydrothermal method. The CQDs exhibited a fluorescence quantum yield of 15.28 % and significant solvent-dependent optical properties. Upon exposure to varying water content in ethanol, the CQDs showed a red shift in emission spectra and a decrease in fluorescence intensity due to hydrogen bonding-induced aggregation. Leveraging these properties, the CQDs were used as a sensitive fluorescent probe for detecting water content in ethanol, demonstrating a good linear correlation (R 2 = 0.989) and a detection limit as low as 0.288 %. To further validate the practicality of the CQDs, their anti-interference ability was evaluated by testing the fluorescence response in the presence of common interfering solvents, including methanol, acetone, isopropanol, ethyl acetate, n-hexane, and DMSO. The results demonstrated high sensitivity and minimal interference, particularly from non-polar solvents. Furthermore, the sensing platform was converted into a portable paper-based sensor for convenient, real-time detection of water content in ethanol under UV light. This study presents a sustainable approach for lignin utilization and offers a promising tool for monitoring water content in ethanol and potentially other organic solvents, even in complex environments.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Binpeng Zhang,Yuting He,Chunshan Zhu,Wanpeng Sun,Han Wang,Dan Liu,Baoqiang Huang,Pinbo Fan
The porous structure of adsorbents is an important factor of their adsorption performance, especially in fixed-bed systems. In this study, we fabricated lignin-derived porous carbon (LPC-Mg) with interconnected pores, which exhibited low resistance for the transport of contaminants in water. The maximum adsorption capacity of LPC-Mg toward Rhodamine B (RhB) and Congo red (CR) was 403.2 and 735.3 mg·g −1 in the batch adsorption mode and 330.5 and 718.6 mg·g −1 in the column adsorption mode. Microporous, hierarchical porous, and commercial activated carbon were used as carbonaceous adsorbents for comparison. The RhB and CR adsorption capacity of LPC-Mg was 1.8–26.6 and 4.0–33.6 times those of other carbonaceous adsorbents at the breakthrough points in fixed-bed systems, respectively. This study developed an effective strategy toward the improvement in the adsorption efficiency of carbon-based adsorbents in fixed-bed systems.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2024
·
IF 5.8
Hong Tian,Xuan Huang,Bin Zhao,Huang Zhang,Shan Cheng,Lei Liu
Biomass pyrolysis has the potential to be transformed into valuable chemicals and fuels. Nitrogenous chemicals exert a substantial influence on the quality of bio-oil. Studying the impact of lignin on the transformation of nitrogen-containing elements in biomass during biomass pyrolysis is crucial for achieving efficient and effective utilization of biomass resources. In this study, tube furnace experiments, thermogravimetric infrared experiments (TG-FTIR), and gas chromatography-mass spectrometry (Py-GC/MS) were used to investigate the interactions of typical lignins (vanillin and syringol), nitrogenous components (glutamic acid), and the effect of lignin on the pyrolysis gas release of glutamic acid and the pyrolysis products during the co-pyrolysis process. In addition, the impact of lignin on the effect of pyrrolidone formation from glutamic acid was investigated in this study in conjunction with quantum chemical calculations. The experimental findings demonstrated that the co-pyrolysis of lignin and glutamic acid resulted in a reduction in the pyrolysis temperature. This reduction facilitated the release of HCN, NH 3 , and CO 2 while notably impeding the formation of nitrogen-containing compounds in the oil. The nitrogen concentration in the pyrolysis oil declined from 97 % to a range of 51.06–79.63 %, and the inhibitory impact decreased as the pyrolysis temperature increased. At an elevated pyrolysis temperature of 800 °C, lignin facilitated the decarboxylation process of glutamic acid, resulting in an increased production of pyrrolidone.Simulation results demonstrated that the lowest energy barrier paths were the dehydration condensation process and the Maillard reaction involving glutamic acid and lignin and their pyrolysis intermediates, with a particular competitive connection between the two pathways. The results explained the interaction mechanism between the two pyrolysis products and provided a fundamental theoretical basis for nitrogen conversion in biomass pyrolysis.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Zhibiao Guo,Mingkun Wang,Lei Qiao,Zhiwei He
Frequent oil spills and the discharge of oily wastewaters become a significant threat to the environment and ecosystem. Herein, a non-fluorinated lignin-based melamine sponge with superhydrophobic and photothermal properties (labeled as MS@COF/LPs/PDMS) has been achieved by decorating with covalent organic framework (COF), lignin particles (LPs) and PDMS. The MS@COF/LPs/PDMS shows excellent surface superhydrophobicity with a water contact angle of 152.3° and a sliding angle of 6°. The adsorption capacities of the MS@COF/LPs/PDMS range from 38.4 g/g to 100.3 g/g for various oils and organic solvents, and the separation efficiency of the MS@COF/LPs/PDMS for CCl 4 reaches 99.7 %. Furthermore, the maximum surface temperature of the MS@COF/LPs/PDMS reaches 61.2 °C because of the thermal vibration of LPs and COF under solar irradiation (1.0 kW/m2). Surprisingly, the MS@COF/LPs/PDMS can rapidly adsorb a droplet of crude oils within 32 s due to the superoleophilicity and excellent photothermal effect. Besides, the melting time of the MS@COF/LPs/PDMS (400 s) reduces by 70 % for an ice droplet under solar irradiation than that of pristine melamine sponge (1330 s). Thus, this study provides new insights into the rational design of low-cost lignin-based melamine sponges for the applications of oil/water separation, crude oil recovery, and de-icing.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Gege Cheng,Fajian Zeng,Xiuyu Liu,Qiuni Yang,Shizhen Wei,Qin Huang
Lignin-containing cellulose nanofiber (LCNF)-based hydrogels are promising eco-friendly biomaterials, yet the role of lignin in enhancing their adhesion and mechanics remains to be explored. Herein, quaternized lignin-containing cellulose nanofibers (QALCNFs) with varying lignin contents were synthesized from bagasse using a deep eutectic solvent (DES). The relationship between lignin content and the adhesion and mechanical properties of QALCNF hydrogels was systematically investigated. Results demonstrated that lignin in QALCNFs enhanced the hydrogel's gelation time, adhesion and mechanical properties through the provision of quinone/catechol groups, which undergo reversible free radical transformations. As the lignin content decreased, the nanofiber bundles gradually transitioned into more uniform nanofibers, forming a hydrogel with a hierarchical porous structure, superior adhesion, and mechanical properties. Conversely, insufficient lignin content weakened the hydrogel's performance by reducing the quinone/catechol content and decreasing hydrogel porosity. Consequently, QAMLCNF-H exhibited outstanding toughness (2400 J/m 2 ), adhesion strength (114.6 kPa), and high porosity (∼86 %), along with sustained drug release performance, effective antibacterial properties, and excellent cytocompatibility. This study provides a comprehensive understanding of how lignin content in QALCNFs influences hydrogel adhesion, mechanical properties, and drug release behavior, offering valuable insights for the development of high-performance LCNF-based hydrogel biomaterials.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Jieyu Xiong,Kexin Li,Canhui Lin,Hua Shen,Chunhong Lu
Owing to the weak intermolecular interaction and inferior mechanical properties, the application of biobased gelatin as a textile fiber can be limited. Although lignin is a promising biobased filler for reinforcing gelatin, the interaction mechanism and mechanical performance of lignin/gelatin composites remain insufficiently explored. In this work, the molecular interaction mechanism in lignin/gelatin blends was systematically investigated by using molecular dynamics (MD) simulations. Simulation models of gelatin composites with varying lignin contents (0, 5, 10, and 20%) were constructed to elucidate the influence of the lignin content on the molecular interaction and mechanical performance. The results implied that the addition of lignin into the gelatin matrix has a significant effect on the hydrogen bonding interaction, which is primarily formed between the hydroxyl/amino groups in gelatin and the hydroxyl groups in lignin. The mechanical properties of the 10% lignin/gelatin composite achieved optimal values, attributed to the improved interfacial interaction and compatibility between lignin and gelatin. The simulation findings were further validated by the experimental data. This study provides valuable insights into the potential fabrication of lignin-reinforced gelatin textile fibers with enhanced mechanical properties.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Jun Yang,Huifang Zhao,Supeng Qiu,Fangtao Xiong,Bingqing Fu,Feiyang Zhang,Jing Li,Lizheng Sha,Xiaohong Chen,Daliang Guo
Lignin has gained significant attention in wastewater treatment due to its abundant resources and good adsorbability. In this work, magnetic lignin micro-nano spheres (Fe 3 O 4 @SiO 2 -LNS) was prepared using alkali lignin as the raw material, and was used as the adsorbent and catalyst to activate peroxymonosulfate (PMS) to build an inhomogeneous catalytic oxidation system (Fe 3 O 4 @SiO 2 -LNS/PMS). The system was then used to remove the stubborn acid blue 9 (AB9) dye in wastewater, and the effects of pH, catalyst dosage, PMS dosage of the system on the removal percentage of AB9 dye and the corresponding degradation mechanism were explored. The results showed that Fe 3 O 4 @SiO 2 -LNS/PMS system had good removal efficiency for AB9 in wastewater, and AB9 dye was completely oxidized and finally degraded into CO 2 and H 2 O. The maximum removal percentage of AB9 was observed when the pH and temperature of the system were 6.0 and 313 K, and the removal percentage of AB9 achieved 100 % when the optimal dosage of Fe 3 O 4 @SiO 2 -LNS and PMS were 3.44 g/L and 53.15 mM, respectively. In addition, Fe 3 O 4 @SiO 2 -LNS had good stability and reusability. This work provides a promising approach for abatement of dyeing wastewater pollution and a new direction for high-value utilization of alkali lignin.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Shitong Yu,Pan Xu,Zhicheng Luo
Converting lignin into renewable fuels via hydrogenolysis is crucial for achieving carbon neutrality. Existing methods primarily produce monomers in the carbon range of 6–9, inadequate for sustainable aviation fuels requiring heavier components. This study introduces a Ni/Nb 2 O 5 catalyst for catalytic transfer hydrogenolysis of organosolv birch lignin with isopropanol, predominantly resulting in dimers and trimers within carbon ranges of 8–16 and 16–30, comprising 24.7 % and 60.5 % of the lignin-oil, respectively. The catalyst's oxygen vacancies and acid sites facilitate efficient C-O and C-C bonds cleavage, preserving a highly aromatic structure with reduced O/C ratio, elevated H/C ratio, and decreased unsaturation. Characterization techniques confirm a significant 55.5 % deoxygenation degree of the lignin-oil, making it suitable for the synthesis of customized fuel across various carbon numbers. This approach offers a practical pathway for obtaining renewable heavier fuel components and precursors from lignin, significantly advancing sustainable fuel technologies.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Jian Wei,Jianjun Sun,Yucui Hou,Zhuosen He,He Li,Shuhang Ren,Weize Wu
The structural analysis of lignin is highly significant in practical terms. We investigated the presence of fused aromatic multirings (FARs) distinct from conventional phenylpropane units in seven lignin types using synchronous fluorescence spectroscopy (SFS) and quantified their relative proportions. Our findings reveal that FARs are present in all lignin samples, primarily composed of 2–6 rings. The relative distribution of FARs in lignin is ranked as follows: 2 rings > 1 ring > 4 rings > 3 rings > 6 rings > 5 rings. The relative contents of these FARs (1–6 rings) exhibit slight variations across all lignin samples. Notably, FARs with 2 rings are the highest at 35 %−53 %, while those with 5 and 6 rings are the lowest, collectively accounting for less than 1.37 %. Moreover, the relative contents of FARs with 1 and 2–6 rings range approximately 24 %−32 % and 68 %−76 %, respectively. Furthermore, the catalytic hydro-depolymerization of lignin was performed and the experimental results demonstrate that the hydro-liquefied oil from lignin contains aromatic compounds with 1–7 rings, and the relative contents of aromatic compounds with 1 ring and 2–7 rings in the oil are 29 % and 71 %, respectively, which is consistent with that of lignin SFS. These findings are also consistent with the existing literature and experimental results. This study offers an explanation for the low yields observed in current depolymerization processes targeting small molecules within lignin and establishes a theoretical foundation for achieving high yields in the preparation of multiring aromatic hydrocarbons.
✓ 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）