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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JOURNAL OF CATALYSIS
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2025
·
IF 6.5
Yixin Li,Jianhao Qiu,Jie Xu,Yong Tang,Dingliang Dai,Guanglu Xia,Biyao Fang,Jianfeng Yao
The utilization of solar energy to break the C α C β bonds in lignin under mild conditions is highly important for lignin valorization. This work presents an MIL-125-derived titanium oxide (M-TiO 2 )-modified carbon nitride (g-C 3 N 4 ) heterostructure for selective photocatalytic lignin C α C β bond cleavage at room temperature. The conversion of lignin model 2-phenoxy-1-phenylethanol (PP-ol) reached 90.8 % over M-TiO 2 /g-C 3 N 4 composites, which is visibly higher than that of bare M-TiO 2 (33.2 %) and g-C 3 N 4 (57.3 %). Furthermore, the selectivity of C α C β bond breakage reached 96.8 %, and the yield of benzaldehyde was as high as 86.4 %. A mechanistic study innovatively demonstrated that lignin C α C β bond cleavages are achieved by the cooperative effect between holes and 1 O 2 , where holes dominate PP-ol conversion, whereas 1 O 2 governs C α C β bond cleavages. M-TiO 2 has relatively large surface areas and high porosities, and the Z-scheme heterojunctions retard charge carrier recombination and outfit strong redox abilities, which separately prompt O 2 adsorption and evolution to generate 1 O 2 , accounting for the high selectivity of C α C β bond breakages over M-TiO 2 /g-C 3 N 4 composites. This study sheds new light on the potential of metal–organic framework-derived materials in photocatalysis and provides valuable insights into the photocatalytic cleavage of lignin C α C β bonds.
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Polymers
·
2025
·Vol. 17
·期 1
·94
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IF 4.9
Yufei Jia,Yimiao Zhang,Fuliang Meng,Zeyu Chen,Hongwei Fei,Dapeng Zhou,Maiyong Zhu,Xinhua Yuan
The preparation of biological phenolic resin (PF) with green recyclable biomaterials instead of phenol is a research hotspot for solving current resource and environmental problems. In this study, on the basis of introducing lignin into the phenolic system, daidzein of a renewable resource with a rigid structure was selected to modify lignin-based phenolic resin (LPF), and the improvement of the mechanical and thermal properties of the modified phenolic resin under different substitution ratios was studied. The friction materials were prepared with a daidzein-modified lignin-based phenolic resin (D-LPF) as the matrix binder, and their effects on the mechanics and friction and wear properties of friction materials were investigated. The results show that when the proportion of daidzein replacing phenol is 12%, the highestTpcan reach 152.4 °C, and theTgof the modified D-LPF resins is significantly higher than those of PF and LPF. The highestTsof D-LPF is 203.3 °C, which is also significantly higher than those of PF and LPF (184.7 °C and 174.6 °C, respectively). The maximum carbon residue rate at 800 °C is 64.2% and is greatly improved compared with the 55.1% and 56.7% of PF and LPF. The bending strength and impact strength of D-LPF-matrix friction materials are obviously higher than those of PF- and LPF-matrix friction materials. The specific wear rate of D-LPF-matrix friction materials is 0.70 × 10−4mm3/Nm, which is obviously lower than those of PF- and LPF-matrix friction materials and shows good applicational prospect as a matrix resin in friction materials.
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高影响因子
JOURNAL OF POLYMER SCIENCE
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2024
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IF 3.9
Zhoujian Wang,Xin Zeng,Lishu Shao,Na Liu,Hao'nan Wang,Yulian Tang,Peng Zhan,Lin Zhang,Zhiping Wu
Here, we tried to use the natural biomass resources (lignin) to modify porous organic polymers (POPs) and expected to reduce the preparation cost and enhance the adsorption performance. Specifically, the surfactant-assisted glycerol organosolv lignin (saGO lignin) was used as the modified agents to prepare lignin modified hyper-cross-linked polymers (LHCPs) by the copolymerization and Friedel-Crafts reaction. We investigated the effect of synthesis conditions (the types and dosages of crosslinkers, the feeding amount of lignin, and so on) on the structure and adsorption performance of LHCPs. The results showed that divinyl benzene (DVB) crosslinked LHCP-D (1041.3 m 2 /g) showed higher specific areas ( S BET ) than N,N′-methylene diacrylamide (MBA) crosslinked LHCP-M (183.1 m 2 /g), and the S BET had a certain increase with increasing the amount of DVB. Intriguingly, the S BET and micropore volume ( V micro ) of LHCPs appeared a linear decrease with the increase of lignin dosage, meanwhile, their morphology had a change from irregular block to agglomerated spherical particles, indicated their porosity and morphology can be well controlled. The Rhodamine B (RhB) adsorption experiments indicated that these LHCPs possessed fast adsorption rate (equilibrium time < 240 min) and good recycling performance, especially, LHCP-D (lignin of 0.5 g, DVB of 1.0 g, catalyst of 3.0 g, reaction time of 10 h) showed the ultrahigh adsorption capacity, up to 743.7 mg/g. The adsorption mechanism was preliminarily investigated by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), and adsorption models analysis, we found that the physical adsorption played the dominated roles by the π–π interaction, hydrogen bonding, and electrostatic interaction. This work not only offered an important reference for the high-value utilization of lignin, but also provided an effective sustainable adsorbent for environmental remediation. Graphical
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ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Xuan Zhou,Qiyu Liu,Dongjie Yang,Xueqing Qiu,Liheng Chen,Jinhao Huang,Hongming Lou,Qizhao Shao
Biomass-based photonic materials have broad application prospects due to their excellent biocompatibility. Lignin is the most abundant aromatic polymer in nature, and it can be transformed into monodispersed particles for photonic materials preparation. However, the heterogeneity of lignin often leads to nonuniform lignin particle formation. To address this issue, a novel separation method using citric acid-acidified molten salt hydrate (MSH) was proposed to dissolve cellulose and hemicellulose while partially depolymerizing lignin from pine wood. The removal of cellulose and hemicellulose significantly improved the purity of lignin to 97.11% and the selective cleavage of β-O-4 bonds minimized lignin condensation. Low-molecular-weight lignin with high hydroxyl groups of 8.06 mmol g–1 was obtained, exhibiting a narrow distribution of intermolecular forces. Monodispersed colloidal spheres can be readily prepared from the rich-hydroxyl lignin through antisolvent self-assembly, allowing precise control over particle size ranging from 150 to 250 nm and enabling tunable single-color coverage across the full spectrum of visible light. This green and sustainable extraction and modification method for lignin provides a simple and economical strategy for preparing biomass-based photonic materials in high yield with minimal chemical utilization.
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GREEN CHEMISTRY
·
2024
·Vol. 26
·期 13
·8020-8029
·
IF 9.3
Jianglin Liu,Xueqing Qiu,Shirong Sun,Bowen Liu,Yuhui Tian,Yanlin Qin,Xuliang Lin
The utilization of plant polyphenols as catalyst carriers holds promise for environmentally friendly catalysis. However, challenges such as the inhomogeneous distribution of organic ligands often hinder their effectiveness. In this study, lignin–metal supramolecular framework were formed through ionic coordination self-assembly, achieved by oxidative ammonolysis modified lignin. The specific spatial domain-limiting effect of lignin–metal supramolecular framework ensures the dispersion and stability of catalyst active sites. Carbon-coated trimetallic catalysts (Ru–FeNi@OALC) derived from lignin–metal supramolecules exhibit promising performance, with low overpotentials for the oxygen evolution reaction (OER, η10 = 290 mV) and the hydrogen evolution reaction (HER, η10 = 52 mV), surpassing commercial noble metal catalysts. Additionally, these catalysts demonstrate long-lasting water-splitting performance, highlighting their potential for sustainable catalytic reactions. Molecular simulations and DFT theoretical calculations elucidate the feasibility of lignin oxidative ammonolysis modification and reveal the coordination mechanism. Furthermore, the abundant defects and disorder in the coordination polymer-derived carbon materials optimize electron transfer processes and accelerate reaction kinetics. This construction strategy towards designable polyphenol–metal supramolecular framework presents a promising avenue for the green synthesis of a variety of metal/carbon composite catalysts, contributing to sustainable catalysis and environmental protection.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Qiang Xiao,Xianliang Song,Xiaojuan Jin
The advancement of rechargeable zinc-air batteries (ZABs) faces significant challenges, particularly due to substantial polarization and the slow kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Multi-element doping represents an effective strategy to address the deficiencies in catalytic activity and stability observed in single-atom catalysts. In this study, we prepare an activated lignin carbon catalyst doped with three elements (N, S, and B) via salt assisted (KOH), referred to as AL-NSB, with the aim is to achieve bifunctional catalysis through the synergistic interaction between the three elements to influence the distribution of the electron cloud and the extent of carbonaceous defects within the catalyst. The catalyst exhibits an ORR half-wave potential ( E 1 / 2 ) of 0.798 V relative to the reversible hydrogen electrode. The superior activity of AL-NSB results in a peak power density of 293.76 mW cm − 2 for the ZAB, along with an excellent cycle lifetime exceeding 1000 h, surpassing the performance of commercial Pt/C-RuO 2 catalysts. The findings of this study underscore the critical roles of N, S, and B in enhancing the activity and stability of both the oxygen reduction and evolution reactions.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Jiawei Li,Yunpeng Wang,Changzhou Chen,Xinyu Cao,Liancen Li,Yihao Xu,Ruyu Zhang,Jinli Chen,Minsheng Lu,Douyong Min,Guangfu Qian
To address the intrinsic activity and stability limitations of nickel-based heterojunction catalysts in the urea oxidation process (UOR) and the hydrogen evolution reaction (HER) under strongly alkaline conditions, a sulfur-doped lignin-derived carbon-encapsulated NiCo@MoO 2 heterostructure (NiCo@MoO 2 /SC) as a bifunctional catalyst is engineered. The physical properties, electrochemical characterization, and simulation results demonstrate that the built-in electric field at the triphasic interface synergistically optimizes the electronic structure of NiCo@MoO 2 /SC, enhancing the UOR process by rapidly generating the NiOOH active site. Meanwhile, charge redistribution in this heterostructure activates ortho‑carbon in the sulfur-doped carbon as HER active sites, significantly enhancing the HER process. Consequently, NiCo@MoO 2 /SC delivers exceptional catalytic activity in both UOR ( E 10/500/1000 = 1.26/1.38/1.40 V) and HER ( E −10/−500/−1000 = −27/−216/−288 mV). Besides, the carbon-encapsulated strategy improves corrosion resistance to enhance chemical stability, while the micro-nano array structure with the superhydrophilic/superaerophobic surfaces facilitates gas-liquid desorption to boost mechanical stability, enabling stable operation at ±1000 mA cm −2 for 100 h, even in a two-electrode system. This study proposes a viable approach to designing efficiency bifunctional electrocatalysts for urea electrolysis, while broadening the prospects of high-value utilization in biomass-derived carbon materials.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Kejia Wu,Zixuan Guo,Zijun Wu,Yuqian Liu,Qiang Zeng,Min Wang,Xuehui Li
Lignin is the primary renewable source of aromatic compounds in nature, and efficiently valorizing lignin can potentially help address the conflict between energy resources supply and demand. Electrochemical oxidation, when combined with extra oxidizing mediums, would be considered as a more powerful and environmentally friendly tool for lignin depolymerization. However, possible mechanisms of these combined oxidation processes lack to be fully elucidated. Herein, reactive oxygen species (ROSs) have been introduced into electrochemical conversion processes of both β O 4 model compounds and organosolv birch lignin through a coupled O 2 cathodic reduction to better improve the efficiency of power utilization. Supported by electrochemical, in situ spectroelectrochemical and product analysis studies, a combined oxidation path has been revealed for the conversion processes of dimers with contributions of anode and O 2 cathodic reduction induced ROSs. In particular, this study also addresses the role of ROSs in the promoted selectivity of C α C β bond cleavage and further clarified the dimer structural and electrochemical process effects on product distribution for lignin conversion in details as well.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jialong Xu,Liang Zhu,Wei Cai,Zixia Ding,Dengyu Chen,Wenbiao Zhang,Chuang Xing,Kaige Wang,Zhongqing Ma
The oxidative torrefaction pretreatment (OTP) is a promising approach to upgrade the quality of biomass. This work investigated the oxidative torrefaction mechanism based on the OTP experiment of biomass pseudo component (cellulose, hemicellulose, and lignin) at varying OTP temperatures and oxygen concentrations. Results showed that more mass of biomass was transferred into the torrefied gaseous and liquid products with OTP temperature and oxygen concentration increasing, remaining less mass in torrefied solid product. The element distribution in biomass pseudo component was optimized after OTP, presenting as the removal of oxygen element and the enrichment of carbon element. The variation of these two elements in hemicellulose after OTP was much higher than that of cellulose and lignin due to the more intensive thermal decomposition reaction in hemicellulose. The chemical compounds in torrefied liquid products from biomass pseudo component were highly differentiated with each other, the anhydrosugars (e.g., levoglucosenone (LGO) and levoglucosan (LG)) and furans (e.g., furfural (FF)) from OTP of cellulose, the furans (e.g., furfural (FF)) and acids (e.g., acetic acid (AA)) from OTP of hemicellulose, the phenols from OTP of lignin. The concentrations of the released gas components during OTP of biomass pseudo component were ranked as CO 2 > CO > H 2 ≈ CH 4 . The thermal degradation mechanism of biomass OTP was revealed.
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JOURNAL OF THE ENERGY INSTITUTE
·
2025
·
IF 6.2
Longfei Wang,Yuanjun Tang,Guoneng Li,Jun Dong,Yao Fang,Wenwen Guo,Chao Ye
This study systematically investigates the effects of Fe-loading on the pyrolysis behavior of three key biomass components: cellulose , xylan , and lignin . Complementary analytical techniques, thermogravimetric analysis (TGA), thermogravimetry-mass spectrometry (TG-MS), and pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS), were utilized to assess the impact of Fe-loading on: ( i ) pyrolysis characteristics, ( ii ) the combined pyrolysis index ( CPI ), ( iii ) small-molecule gas evolution, and ( iv ) tar product distribution. Results demonstrate that the loading of Fe(NO 3 ) 3 significantly reduced the initial pyrolysis temperatures of cellulose and xylan by ∼140 °C and ∼62 °C, respectively, resulting in 58 % and 37 % decreases in CPI values. Conversely, lignin exhibited a 111 % CPI increase under Fe loading conditions, attributable to accelerated aryl-ether bond cleavage. The presence of Fe enhanced CO 2 evolution while suppressing H 2 O and CO generation in cellulose / xylan conditions. In contrast, it promoted CH 4 , H 2 , CO, and CO 2 evolution during lignin pyrolysis. Py-GC/MS analysis indicated that the presence of Fe drives aromatization through deoxygenation pathways while inhibiting ring-opening depolymerization, consequently shifting tar composition toward higher-carbon-number aromatic hydrocarbons. The findings can serve as a valuable reference for the application and promotion of the high-value valorization of waste biomass.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Honghong Deng,Xi Liang,Ziyang Zhang,Chao Peng,Xueying Wang,Liumin Li,Binqi Li,Qiang Yang,Junwei Liu,Muhammad Moaaz Ali,Sheng-Yen Wu,Faxing Chen
Plums are economically important stone fruits, valued for their nutritional quality and health-promoting properties. However, their quality and marketability are often compromised by a physiological disorder called fruit hollowness and browning (HB). This study employed an integrated physiological, biochemical, and proteomic approach to investigate the molecular mechanisms underlying HB in Huangguan plum. Huangguan plum fruit samples from seven developmental stages were analyzed for lignin content, key enzyme activities, and expression patterns of genes involved in lignin biosynthesis. The results demonstrated that HB-affected fruit accumulated significantly higher lignin levels, particularly during post-veraison stages, accompanied by elevated activities of lignin biosynthesis-related enzymes like phenylalanine ammonia-lyase and laccase. Expression analysis of lignin pathway genes revealed distinct transcriptional dynamics, with notable upregulation of PsPAL1 and PsLAC7 in HB fruit at critical developmental stages. Proteomic profiling identified 941 and 1249 differentially expressed proteins between HB and non-HB fruit at the veraison and ripe stages, respectively. KEGG enrichment analysis highlighted significant alterations in the phenylpropanoid biosynthesis pathway (map00940), which is central to lignification. These findings provide new insights into the physiological and molecular basis of HB in plum fruit and a scientific foundation for developing effective strategies to mitigate or address this disorder and improve fruit quality.
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高影响因子
危险品化学品经营许可证（带存储）