CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Feng Chen,Xuebin Lin,Wei Chen,Na Wen,Yanqiao Jin
The design of a highly active Cu-Co catalyst for catalytic transfer hydrogenolysis of lignin without the use of external hydrogen remains highly challenging. In this work, Cu 2 O was initially encapsulated in ZIF-67, and subsequently Cu 2 O@ZIF-67 was utilized as a precursor and sacrificial template to prepare the unique double core–shell hollow nanocage CuO@Co 3 O 4 . Co and Cu, serving as Lewis acid sites and dehydrogenation sites for the hydrogen-donor solvent isopropanol, respectively, exhibited synergistic enhancement, further increasing the catalytic activity. Under the optimal conditions of 220 °C, 1 MPa N 2 , and 4 h, the catalyst achieved 100 % conversion of 2-phenoxy-1-phenylethanol and 100 % yield towards cyclohexanol and ethylbenzene. Furthermore, the catalyst remained stable and reusable after 5 cycles, providing a practicable guidance for the value-added conversion of lignin.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Man Liu,Tong Song,Xuan Wu,Qian Li,Shiwei Wang
In this paper, the foamed polylactic acid (PLA) composites with different ratios of titanium dioxide (TiO 2 ) and lignin (Lg) are prepared. Molecular dynamics simulation analysis indicates that the fillers enhance the mechanical properties of the composites. The optimal foaming temperatures for PLA/Lg and PLA/TiO 2 composites are found to be 110 and 100°C, respectively. The supercritical carbon dioxide foaming process is applied to get the foamed composites, and their mechanical and thermal properties are analyzed. The results show that the addition of TiO 2 improves the melting point and compression properties of the PLA composites. Furthermore, the inclusion of Lg increases the molecular chain mobility, foaming multiplicity, and compression strength of the composite materials.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Xing Long,Yadan Luo,Zhi Luo,Yiyan Wu,Baojie Liu,Chengrong Qin,Chen Liang,Caoxing Huang,Shuangquan Yao
Microplastic contamination of low-density polyethylene mulch and nutrient loss from fertilizers present significant challenges in the crop-growing. In this study, the focus was on creating a biodegradable film that combines the advantages of plastic film, thermal insulation and water retention, as well as the controlled release of fertilizer. A key innovation was the efficient introduction of low molecular weight and low dispersibility of poplar lignin into chitosan and polyvinyl alcohol matrices. The lignin was extracted using deep eutectic solvents of binary carboxylic acids (choline chloride and maleic acid). The refined lignin was used as a superhydrophobic additive to improve the mechanical properties, hydrophobicity, and controlled nutrient release properties of the films through cross-linking. The mulch attained a tensile strength of 37.6 MPa, an elongation of 644.1 %, and a precise release of 53.1 % urea over 30 d at the ideal lignin content ratio (10 %). Furthermore, the film proficiently regulated soil temperature and moisture content. Successful enhancement of cabbage growth was achieved by actual measurements. This discovery provides innovative ideas for the development of nutrient slow-release high-strength integrated agricultural mulching films to promote sustainable, high-quality green agriculture.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MACROMOLECULES
·
2024
·
IF 5.1
Hai Li,Yang You,Chun Hui Xie,Yun Qi Li,Hai Bo Xie
Despite the significant attention that biobased polymers have garnered, the potential value of the intrinsic structural characteristics inherited from biomass in the molecular design of these polymers remains underexplored. In this study, a noncoplanar triaryl-imidazole was designed to serve as a curing agent for high-performance epoxy adhesives. The curing behavior can be modulated through the conjugative effects of the aryl groups and the electron-donating properties of the methoxy groups, both of which are inherited from lignin. Furthermore, both theoretical and experimental results indicate that π–π stacking interactions involving the aromatic rings, cation–π interactions involving the imidazolium cation, and hydrogen bonds involving the methoxy groups coexist within the cured resins, thereby forming a multivalent supramolecular network centered around the lignin-derived noncoplanar triaryl-imidazolium. As a result, the system demonstrates a high glass transition temperature (TgDMA = 230.85 °C), enhanced strength and toughness, strong adhesion, and a wide working temperature range (−196 to 200 °C). These findings contribute to the establishment of structure–property relationships for lignin-based polymers and provide valuable insights for the rational design of biobased chemicals and polymers.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Xiaopeng Yue,Yongjun Mao,Siqian Zhang,Panpan Cao,Yang Xu,Zhiwei Wang
In this paper, epoxidized lignin (HL) and sebacic acid (HSA) were used as the hard and soft segments, respectively, and a kind of reactive coordinated phosphorous-nitrogen flame retardants (DTZ) was designed and synthesized via Zn 2+ coordination to fabricate a multifunctional non-bisphenol A lignin based epoxy (EP) composite. The swelling behavior and morphological analysis demonstrated that the crosslinking density of EP increased significantly after adding HL and DTZ. The existence of coordination sacrificial bond of DTZ dissipated more energy when it was subjected to external forces, thereby making 80HSA/14HL/6DTZ maintained a high tensile strength (10.65 MPa) while having little damage to the elongation at break (30.74 %). The limiting oxygen index (LOI) of 80HSA/14HL/6DTZ was significantly higher than that of 100HSA (22.3 %), reaching 36.6 %, and the vertical combustion test (UL-94) reached V-0 level. The morphology of carbon layer and residual carbon analysis showed that HL and DTZ had synergistic effect, and the flame retardancy mechanism of gas phase and condensed phase existed in the combustion process. Simultaneously, the addition of HL and DTZ also endowed the EP composite with excellent corrosion resistance and antibacterial properties.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ENERGY INSTITUTE
·
2024
·
IF 5.6
Xiaoxin Chen,Bowen Luo,Junyao Wang,Jianping Liu,Chao Wang,Zhipeng Tian,Riyang Shu,Ying Chen
The hydrodeoxygenation of lignin-derived phenolic compounds holds great promise for biomass-derived liquid fuel production. However, achieving a consistently high cyclohexane yield poses a formidable challenge. In this study, NiCoAl catalysts were successfully synthesized using the solution combustion method for the hydrodeoxygenation of lignin-oil. The impact of calcination temperature on the preparation of NiCoAl catalysts was investigated. The results indicate that the selectivity of cyclohexane exhibits an initial increase followed by a decrease as the calcination temperature rises. Notably, the NiCoAl-600 catalyst reached 99.99% guaiacol conversion, with the highest selectivity of cyclohexane (97.96%) achieved. Characterization results demonstrate that the transition of the spinel structure from normal to inverse with rising calcination temperature. Moreover, the catalyst particle size initially decreases and then increases, while the oxygen vacancy concentration in the catalyst increases. It was found that these properties contribute to a better hydrodeoxygenation performances of guaiacol and other phenolic compounds over non-noble NiCoAl catalyst. Possible reaction pathway and mechanism are proposed and discussed. Additionally, the spinel-structured NiCoAl-600 catalyst has good thermal stability, ensuring potential application in the upgrading of lignin-oil.
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Jiajia Tai,Quanxiong Lu,Xianliang Song
The progress in developing inexpensive and highly effective catalysts is vital for overcoming the current limitations of oxygen reduction reaction (ORR) and the practical application of fuel cells. This study constructed a three-dimensional (3D) composite catalyst using etra-β-(8-quinolinoxy) iron phthalocyanine (EFePc) as the sites of catalytic activity, nitrogen-doped reduced graphene oxide (NRGO) as the basal plane, and oxidized carbon black (OCB) as the intercalating agent. The morphological and structural characteristics of the composite catalyst were thoroughly analyzed using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, Brunauer-Emmett-Teller (BET) surface area analysis, Fourier-transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). Evidence from the results suggested that the 3D catalyst has been synthesized successfully. The EFePc-NRGO/OCB exhibited a half-wave potential (E 1/2 ) of 0.80 V, closely approximating those of commercial Pt/C (20 wt%). The average electron transfer number was 3.77, indicating a 4-electron transfer process. Furthermore, when the catalyst was applied to direct lignin fuel cells (DLFCs), the maximum power density reached 247.87 mW/m² which far exceeded Pt/C (53.13 mW/m²). This offers a novel perspective for the advancement of high-efficiency non-noble metal catalysts and the high-value utilization of lignin.
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2024
·
IF 5.2
Penghua Zhao,Jiachuan Chen,Lei Zhang,Chenglong Qiu,Baobin Wang,Jinze Li,Kai Zhang,Guihua Yang
Heteroatom-doped porous carbon has become a key material in the field of supercapacitors (SCs) and the oxygen reduction reaction (ORR). Here, eucalyptus pulping red liquor was used as the starting material for a straightforward one-step NH4Cl-assisted carbonization technique that produced a nitrogen and sulfur codoped bifunctional porous carbon material. The sulfur in sodium lignosulfonate was used as a S atom dopant. NH4Cl added to the red liquor can not only produce NaCl as a template but also as a nitrogen source. The resulting carbons possess rich hierarchical porous structures and high specific surface area (1092 m2 g–1) and ID/IG ratio (1.04), leading to remarkable electrocatalytic activity with a specific capacitance of 326 F g–1 at 0.5 A g–1 for capacitance and an identical onset and half-wave potentials of 0.988 V vs reversible hydrogen electrode (RHE) and 0.847 V vs RHE for the ORR, as compared with the benchmark Pt/C catalyst. Furthermore, when BLC-N/S-1000 was used as an electrocatalyst in an air electrode of a zinc–air battery, it showed superior long-term stability for 356 h at 5 mA cm–2 and 20 min/cycle. Results in the present work pave a new green method to convert abundant low-cost biomass into high-end heteroatom-doped carbons with rich hierarchical porous structures for electrochemical energy devices.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2025
·
IF 4.7
Hongliang Sheng,Shuainan Wang,Tao He,Xiaoben Zhao,Jinfeng Zhang,Song He,Yajun Huang
In this study, mesoporous activated carbon with high specific surface area was synthesized using lignin as the carbon source through hydrothermal pretreatment and alkali activation. The prepared activated carbon HL-4–200–800 exhibited a specific surface area as high as 3057 m²/g and a pore volume of 2.80 cm³/g. The excellent physicochemical properties were confirmed by comprehensive characterization methods including nitrogen adsorption/desorption isotherms, elemental analysis (EA), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FTIR). Moreover, the prepared samples demonstrated outstanding adsorption performance, with a saturated adsorption capacity of 2030.13 mg/g for gaseous benzene and 140.41 mg/g for NO at 298 K. Further analysis through isotherm fitting, adsorption kinetics modeling, and ideal adsorbed solution theory (IAST) indicated that the material showed significantly better adsorption selectivity for benzene than for NO. Density functional theory (DFT) simulations revealed the competitive adsorption mechanism between benzene and NO, highlighting the crucial role of surface functional groups in enhancing adsorption efficiency.
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2025
·
IF 3.7
Zhengtao Wei,Xiaofei Wang,Xuliang Lin,Xueqing Qiu
The emission of organic pollutants from the dye industry and medical treatment represents a significant threat to the quality of water resources and human health. The development of green, environmentally friendly and efficient photocatalysts for the removal of organic pollutants from the environment is of paramount importance in addressing these issues. Flower-like lignin-derived carbon (LC)/zinc oxide (ZnO) composites with controllable morphology were synthesized via a direct precipitation method. In this study, alkali lignin was employed as an anionic active agent to alter the molecular arrangement on the liquid surface during the synthesis reaction and to reduce the surface tension between mixtures, thereby forming a special stacked morphology, which was then used for the highly efficient removal of methylidene blue (MB) and tetracycline hydrochloride (TCH) in water under different light conditions. The formation mechanism of LC/ZnO and the degradation characteristics under different reaction conditions were investigated. The loading of LC can form composites with large specific surface area and rich porous structure. In addition, with the help of lignin, the morphology of ZnO was changed from a rod-like structure to a lamellar structure, and LC could effectively reduce the band gap of ZnO, which could improve the electron transfer rate in the photocatalytic process. The ·O₂⁻ and ·OH radicals generated under photoexcitation promoted the decomposition of pollutants. This study presents a simple, economical, and scalable method for the application of photocatalysts and explores new ways for the high-value application of industrial lignin.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xin Zhang,Haicun Yang,Shi Liu,Jinchun Li
Efficient capacitive deionization (CDI) technology puts forward higher requirements for electrode materials. However, the traditional process of preparing porous carbon (PC) electrodes by alkaline chemical activation is polluting and energy-consuming. In this work, the N/P co-doped biocarbon material (H-AL/APP) was prepared by using alkali lignin (AL) and ammonium polyphosphate (APP) as carbon precursors based on laser-induced carbonization and hydrothermal activation technology. The as-prepared carbon material shows a three-dimensional (3D) structure with a hierarchical porous structure, large specific surface area of 405.98 m 2 /g (SSA), excellent pore volume, and outstanding mesoporosity. Compared with commercial YP80 activated carbon, The H-AL/APP electrode exhibits a higher specific capacitance of 210F/g with excellent rate performance and cycle stability. When assembled for desalination, H-AL/APP shows the highest removal rate of 23 mg/g/min with an outstanding desalination capacity of 34.6 mg/g than those of YP80 activated carbon. Furthermore, reasonable cycle stability and reproducibility highlight their promising application prospects. In summary, this work provides a green, efficient, and economical method for preparing high-performance heteroatom-doped PCs for efficient CDI desalination.
✓ 已验证
产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2025
·
IF 9.2
Yukang Fan,Dongjie Yang,Fangbao Fu,Xueqing Qiu,Wenli Zhang
Nitrogen and oxygen co-doped porous carbon holds considerable potential for enhancing zinc-ion hybrid capacitors (ZIHCs) in large-scale energy storage. However, designing high-performance carbonaceous cathodes with accessible active sites and efficient ion transport pathways remains challenging. Herein, we employed a multi-scale assembly strategy to construct lignin-based organic–inorganic supramolecular aggregates (LSA) to prepare nitrogen and oxygen co-doped porous carbon nanosheets (S-NLPC), achieving an exceptionally high specific surface area of 2848.1 m2 g−1, a hierarchical porous structure, and substantial levels of nitrogen and oxygen doping (N: 4.0 at% and O: 8.9 at%). The carbon nanosheets saturated with customized micro–mesopores significantly enhance the kinetics of ion transport and storage, while the nitrogen and oxygen doping improves the accessibility of high-density active sites and introduces additional chemisorption sites. As a result, the ZIHCs utilizing S-NLPC as the cathode demonstrate an enhanced specific capacitance of 433 F g−1 (192.4 mA h g−1), superior energy density of 154.3 W h kg−1 at 80.2 W kg−1, and remarkable cycling stability with a capacity retention of 90.2% after 20 000 cycles at 5 A g−1. Furthermore, ex situ characterization reveals that the superior zinc ion storage performance of S-NLPC is primarily attributed to the reversible chemisorption of oxygen functional groups and the co-adsorption mechanism of Zn2+ and H+. This work presents a novel strategy for constructing lignin-based inorganic–organic aggregates utilizing multi-scale forces, providing new insights into the structural design of carbon-based cathodes for high-performance ZIHCs.
✓ 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）