CONSTRUCTION AND BUILDING MATERIALS
·
2024
·
IF 7.4
Guolan Dou,Chen Wang,Xiaoxing Zhong,Botao Qin
In this study, lignin modified cementitious materials (LFGS) were synthesized to determine the viability of mineral cementitious sealing and firefighting materials using uncalcined coal gangue (UCG) and fly ash (FA) as raw materials in order to realize the resource utilization of coal-based solid waste and prevent spontaneous combustion of coal gangue and coal fires. The 28-d compressive strength was increased to 63 MPa, the fluidity was improved to 142 mm, and the final setting time was shortened to 75 min with 0.1 wt% lignin. Thermal exposure experiments demonstrated that lignin modification could improve the high temperature resistance in terms of residual compressive strength , thermal crack and shrinkage resistance. The microstructure and thermogravimetric characterization of the resulting cementitious materials revealed the generation of a dual-crosslinked network composed of covalent linkages (Si-O-Al bonds) and hydroxyl groups-Ca 2+ coordination bonds. The average air sealing efficiency of LFGS was found to be 53.7% higher than that of ordinary Portland cement slurry. The examination of the CO 2 emissions of the cementitious materials revealed that the carbon emission index of LFGS was approximately 55% lower than that of ordinary Portland cement . This study not only presents a resource utilization strategy for uncalcined coal gangue and coal fly ash, but also a green and low carbon emission cementitious firefighting material to prevent coal fires.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Guosheng Jia,Zhiwei Huang,Yameng Fan,Lingfei Zhao,Weihong Lai,Shi Xue Dou,Xuefen Wang,Hengxue Xiang,Meifang Zhu
The environmental problems caused by the abuse of antibiotics are raising serious attention, and the removal of antibiotics in wastewater is meaningful yet challenging. In this work, lignin-derived carbon fibers loaded layered double hydroxides (LDH@LCF) has been prepared for the removal of ofloxacin (OFX) from wastewater via photocatalysis, which exhibit a high degradation efficiency of 96 % under visible light and maintained 90 % after five reuses. The effects of Zn 2+ /Fe 3+ in the samples and other parameters affecting the photocatalytic efficiency of OFX have been systematically investigated. Results demonstrated that the enhanced photocatalytic efficiency is derived from the synergistic effect of the Zn 2+ and Fe 3+ in the LDH with a reduced band gap of the catalyst, higher number of oxygen and metal unsaturated coordination sites, and rapid removal of photogenerated electrons. The working mechanism and degradation pathways for OFX by LDH@LCF are also elucidated in detail.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOMACROMOLECULES
·
2025
·
IF 5.4
Yue Zhang,Siyuan Wen,Ke Zheng,Xin Zhou,Caoxing Huang,Yong Xu,Jing Luo,Geng Lu
Skin exhibits limited self-regenerative capacity following an injury; therefore, it is imperative to develop appropriate wound dressings capable of expediting postinjury closure to prevent microbial invasion and enhance the wound healing process. In this study, poly-N-isopropylacrylamide (PNI), sodium dodecyl sulfate/octadecyl methacrylate micellar (SA), and micellar (chitin/lignin)-loaded curcumin (Cur) were used for constructing a thermosensitive and tissue-adhesive hydrogel (PNI-SA@Cur), aiming to develop a wound dressing that enhanced wound healing. The results demonstrated that PNI-SA@Cur hydrogel exhibited superior thermal shrinkability, along with excellent adhesion and self-healing capabilities, and it also showed good hemocompatibility and cytocompatibility. Additionally, PNI-SA@Cur as a sealant significantly achieved suture-free postwound closure in the early stages of wound healing, and it demonstrated a substantial capacity to promote wound healing by reducing inflammatory cell infiltration, facilitating favorable collagen deposition, and stimulating abundant angiogenesis. The thermoresponsive and tissue-adhesive hydrogel dressing represents a promising material for promoting wound healing.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2025
·
IF 14.3
Weisheng Han,Siqun Wang,Maicheng Zhang,Keying Long,Wenbiao Zhang,Chunping Dai,Junfeng Wang,Jingda Huang
The development of lignin-based functional materials is a predictable boom. However, lignin is limited by its rigidity and brittleness, and difficult in material application requiring high elasticity. In this work, an effective innovative strategy was put forward to fabricate ultra-highly elastic conductive lignin–based porous system with flexible-rigid-flexible lamella topological structure for piezoresistive sensor. In the system, alkali lignin (AL) was utilized as the rigid skeleton and seriatim wrapped with polyvinyl alcohol (PVA) and flexible methyltrimethoxysilane (MTMS) as the flexible lamella to construct a structure like flexible-rigid sandwich lamella, where poly (3,4-ethylenedioxythiophene)@ polystyrene sulfonate (PEDOT@PSS) are evenly fixed to form a conductive network by electrostatic adsorption with AL. Directional freezing makes the orderly flexible-rigid sandwich lamellas form a topological scaffold, whose orderly arrangement could effectively transfer and disperse pressure-induced stress, enhancing the structural ultra-high elasticity of system with a 98.6%, 92.1%, and 76.4% compressive recovery rate (at 50% strain) after compression of over 200 cycles, 1000 cycles, and 10000 cycles, respectively. As the piezoresistive sensor, the system exhibits outstanding sensing capabilities up to 80% strain, high fatigue resistance, and remarkable piezoresistive stability (with unchanging the curve of Δ R / R 0 over 10000 compressions at 50% strain rate). In addition, the system displays super sensitive sensing performance for weak deformation (such as wrist pulse). Meanwhile, owing to the high porosity of its topological structure, the aerogel achieves an oil absorption efficiency of 19.1 to 51.5 g/g for various types of oils and demonstrates excellent reusability in oil absorption (with only a 6.96% decrease after 10 cycles). The study advances the development and utilization of lignin, paving a new way for lignin-based smart sensing and adsorption applications.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Simei Wan,Fangbao Fu,Qiyu Liu,Wenli Zhang,Xueqing Qiu
Porous carbon represents a highly promising cathode material for zinc-ion hybrid capacitors (ZIHCs). Nevertheless, conventional activation methods typically produce narrow micropores that are mismatched with the dimensions of hydrated Zn 2+ ions, limiting the electrochemical performance of ZIHCs. Herein, a dual-salt activation strategy employing potassium citrate and potassium oxalate was proposed to synthesize lignin-derived oxygen-rich porous carbon nanosheets (OPC-Kc-Ko) featuring large-sized micropores exceeding 0.86 nm. The optimized OPC-Kc-Ko-700 exhibited a high specific surface area of 1762 m 2 /g, a significant proportion of large micropores (38 %), and abundant oxygen functionalities (12.24 at.%). The gas exfoliation of potassium oxalate and the self-templating effect of potassium citrate facilitated the formation of nanosheet morphology. Meanwhile, the persistent etching by potassium carbonate contributed to the high surface area and the presence of large-sized micropores. These architectural characteristics endowed OPC-Kc-Ko-700 with dense electroactive sites and rapid ion-sieving nanochannels tailored to hydrated Zn 2+ dimensions (≈0.86 nm), enhancing energy storage and charge-transfer kinetics in ZIHCs. When utilized as a cathode in ZIHCs, OPC-Kc-Ko-700 delivered a remarkable specific capacitance of 324 F/g at 0.1 A/g and an energy density of 115.52 Wh/kg. The material exhibited outstanding cycling stability, preserving 93.5 % capacitance retention after undergoing 12,000 charge–discharge cycles under a high current density of 5 A/g. This superior Zn 2+ storage capability can be attributed to the electric double-layer capacitance enabled by fast ion adsorption/desorption within the large-sized micropores and pseudocapacitance arising from reversible oxygen-mediated redox reactions. This study elucidates innovative strategies for tailoring pore architectures in carbon-based cathode materials for high-performance ZIHCs.
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2025
·
IF 5.3
Mingqiang Chen,Yupei Li,Yishuang Wang,Defang Liang,Chang Li,Haosheng Xin,Jun Wang
Catalytic depolymerization of lignin (CDL) is a prospective technology for the efficient utilization of biomass. In this paper, novel B–Ti-modified diatomite-supported nickel phosphide catalysts (xNiP/BTD) were prepared to depolymerize lignin in a unique formic acid-assisted aqueous-phase glycerol medium. Under optimal conditions, 4NiP/BTD exhibited 100% lignin conversion and 95.4% lignin oil (LO) yield, in which the yield of petroleum ether (PE)-soluble product reached 20.6%. Based on the characterization results, the superior performance of 4NiP/BTD for CDL was attributed to the collaborative effect of metallic Ni0 centers and acidic sites within Ni3P species. Among these, metallic Ni0 sites activated formic acid and aqueous-phase glycerol to generate active hydrogen (denoted as H*); subsequently, lignin was dominantly converted into phenol and alkyl guaiacol under the comprehensive function of H*, Lewis (Niδ+ species), and Bronsted acid sites (P–OH groups). Additionally, a potential reaction pathway for CDL with 4NiP/BTD as the catalyst was suggested. This study established a feasible approach for the efficient conversion of lignin using crude glycerol and green clay resources.
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Wei Tang,Ruolin Li,Xinyue Wang,Haojie Qian,Bo Fan,Yucai He
The molecular architecture of hydrogen bond acceptors (HBA) within deep eutectic solvents (DES) emerges as a key factor in bioconversion of lignocellulose. This work constructed a series of DES systems by employing diverse alkylammonium halide as HBAs, enabling an investigation into the synergistic interplay between alkyl chain length and halide anion identity on the deconstruction of poplar sawdust (PS). Notably, the cetyltrimethylammonium bromide (CTAB)-based DES displayed a reduced surface potential, weakened hydrogen bonding energy, and diminished polarity, outperforming counterparts based on short-chain alkylamines or alternative halide-containing HBA. When applied in the pretreatment of PS, this DES has achieved a removal of 68.4 % lignin and 94.0 % xylan, while elevating the cellulose digestibility to 76.5 %. Structural analysis unveiled that the CTAB-based DES profoundly disrupted the pivotal β-O-4 ether bonds and aromatic structure within lignin, and thus enhancing substrate digestibility. The long-chain hydrophobic alkyl chains and highly-polar bromide ions empowered the DES with superior penetration and deconstruction capabilities toward lignocellulose, highlighting the paramount significance of HBA’s molecular structure in refining DES pretreatment paradigms for efficient biomass transformation.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Zhiyu Zhang,Mingming Zhang,Min Wu,Feng Jiang,Youhong Wang,Mang Wu,Liang Zhou
To enhance the application potential of lignin, lignin-based thermoplastic elastomers were developed by utilizing sustainable monomers. This work used grafting strategy to introduce terpene-derived monomer tetrahydrogeraniol acrylate (THGA) and tetrahydrofurfuryl methacrylate (TFMA) derived from furfural into lignin to obtain sustainable lignin-based thermoplastic elastomers. The findings indicate that the long-branched structure of THGA enables the lignin-based elastomer to achieve a reduced T g . By modifying the ratio of the two biomass monomers, the T g and mechanical properties can be regulated. Lignin plays an indispensable role in enhancing mechanical action. With identical monomer molar ratio input, lignin graft copolymers exhibit superior mechanical properties compared to linear copolymers. For instance, the fracture stress of Lignin0.50-PTFMA700 is 6.3 MPa, the fracture elongation is 277 %, the fracture stress is 2.5 times higher than PTFMA700, moreover, Lignin0.59-PTFMA500 also has good elastic recovery ability. Meanwhile, Lignin0.59-PTFMA500 exhibits excellent adhesion to various substrates, with a shear strength of 2.0 MPa on glass substrates. Additionally, these lignin-based thermoplastic elastomers also possess outstanding ultraviolet absorption performance. This offers a novel research idea for developing sustainable functional monomers and broadening the high-value addition of lignin.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Xuanjia Yu,Tianyuan Xiao,Lu Wu,Lingzhi Huang,Wenchao Jia,Mizhao Song,Bing Wang,Xueru Sheng,Pedram Fatehi,Ying Sun,Haiqiang Shi
Hemp straw bark, a high-yield renewable resource, faces sustainable development challenges due to underutilized lignin in traditional fractionation processes, often discarded as low-value waste. Herein, a one-pot strategy using choline chloride/lactic acid (ChCl/LA, 1:5) deep eutectic solvent (DES) enables controllable depolymerization and nanoscale self-assembly of lignin from it. Optimal conditions (solid-liquid ratio 1:80, 6 h) achieve a 98.6 % lignin yield relative to the initial lignin content in the raw material. FTIR and HSQC NMR confirm a selective β-O-4 ether bond cleavage with preserved aliphatic hydroxyls; 31 P NMR shows 3.1 mmol/g phenolic hydroxy and 1.28 mmol/g carboxy, enhancing interfacial activity. GPC reveals regulated molecular weights (M n 2160, M w 3632 g/mol, PDI = 1.68). Depolymerized lignin (L33) self-assembles into 190.1–220.2 nm nanoparticles (−32.5 mV zeta potential, good stability) with high thermostability (40 % char at 800 °C) and antioxidant activity (DPPH scavenging 73.9 % ± 1.1). LNPs (0.1 mg/mL) show potential as Pickering emulsion stabilizers, valorizing lignin into high-value materials. This study realized the effective and efficient separation of lignin from hemp straw bark, thereby offering a promising method for the industrial application of this lignin.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CATALYSIS
·
2025
·
IF 6.5
Qibin Zeng,Yuancai Lv,Meiyan Shi,Ting Pan,Yunhe Xie,Yifan Liu,Minghua Liu
Selective cleavage of C-O bonds is a pivotal step for converting lignin into value-added chemicals, yet the development of efficient catalysts for mild-conversion remains a formidable challenge. Herein, a novel bi-Ni metal catalyst (Ni NPs-SAs /NC) composing of Ni single atoms (SA) and Ni nanoparticles (NP) was synthesized by pyrolysis strategy and employed for lignin hydrogenolysis without external hydrogen gas. Due to the high reactivity of Ni NPs-SAs /NC, various lignin model compounds (α-O-4, β-O-4 and 4-O-5, etc.) were fully converted into aromatic monomers at low temperature (200 ℃) and autogenous pressure, and the selectivity of aromatic monomers was as high as 86.3 %. Structural characterization and theoretical calculations indicated that the excellent catalytic performance of Ni NPs-SAs /NC catalysts was attributed to the synergistic effect of Ni SA and NP sites. Specifically, isopropanol was adsorbed at the Ni NP site and generates active hydrogen, and the Ni SA site adsorbed and activated the C-O bonds. The active hydrogen spillover from the Ni NP site to the Ni SA site enabled the cleavage of the C-O bond of lignin under mild conditions. This work may pave the way for developing high-performance non-noble metal catalysts with exceptional reactivity and selectivity for the valorization of lignin.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Xiao Zhao,Baojie Liu,Hao Xu,Chengrong Qin,Shuangquan Yao,Chen Liang,Shuangfei Wang
Elemental Chlorine-Free (ECF) bleaching is a globally prevalent pulping technology that primarily utilizes chlorine dioxide (ClO 2 ) as a bleaching agent. However, the chlorination side reactions during ECF bleaching lead to the formation of chlorinated adsorbable organic halides (AOX), which are difficult to degrade and pose a potential threat to the ecological environment. This study presents a novel high-concentration ClO 2 pulping bleaching technology at room temperature, which effectively suppresses the chlorination side reactions through the strong oxidizing properties of high-concentration ClO 2 , thereby achieving both bleaching and a reduction in AOX generation. The results indicate that high concentrations of ClO 2 efficiently removed residual lignin from the pulp, promoted the cleavage of lignin ether bonds, and had no adverse impact on the strength or crystalline structure of the cellulose. The amount of AOX was effectively controlled to 0.41 kg/t pulp. Kinetic analysis demonstrated that the degradation of lignin in this bleaching system follows first-order reaction kinetics, with an activation energy of 1310.78 J/mol. Approximately 95 % recovery of the ClO 2 solution was achieved through a four-step reabsorption method. This technology advances the development of pulping and bleaching techniques and provides theoretical guidance for the innovation of cleaner pulping and papermaking technologies.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CATALYSIS
·
2025
·
IF 6.5
Zong-Pin Fu,Qi-Jie Zhou,Yun-Peng Zhao,Yu-Fa Wu,Fang-Jing Liu,Mei Zhong,Jian Li,Jing Liang,Jing-Pei Cao
The abundant bridging bonds and side chains in lignin make the selective cleavage of its C-O bonds a promising approach for achieving efficient conversion. Herein, Cu/CoOx-CeO 2 catalysts were prepared and the effects of their physical and chemical structures on C-O bond hydrogenolysis activity were investigated. The results indicated that incorporating an appropriate amount of CeO 2 as a support facilitated the doping of Co n+ cations into the CeO 2 lattice, enhancing oxygen vacancy concentration. Additionally, the Cu K-edge X-ray absorption near-edge structure (XANES) spectra revealed that Cu exists in a mixed valence state (Cu δ+ , 0 < δ < 2) within the catalyst. Reaction pathway regulation was achieved through strategic modulation of reaction conditions. When isopropanol was used as the solvent under a N 2 atmosphere, 2-phenoxy-1-phenylethanol (2-PPE-ol) was completely converted at 180 °C within 2 h, yielding ethylbenzene and cyclohexanol with 100 % selectivity. Conversely, when n -hexane was employed as the solvent, dehydrogenation of the C α -OH group generated hydrogen radicals, which promoted cleavage of the C β -O bond in the β-O-4 ketone intermediate, resulting in phenol and 1-phenylethanol with 100 % selectivity. Isotopic labeling and active hydrogen tracking experiments revealed that the active hydrogen in catalyst transfer hydrogenolysis (CTH) originated from the solvent, whereas self-hydrogen-transfer hydrogenolysis (SHTH) relied on hydrogen derived from the C α -OH group of 2-PPE-ol. This work provides valuable insights into the directional conversion of lignin into high-value chemicals and efficient energy utilization.
✓ 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）