ACS Sustainable Chemistry & Engineering
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2019
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IF 6.97
Fangbao Fu,Dongjie Yang,Huan Wang,Yong Qian,Fang Yuan,Jiqin Zhong,Xueqing Qiu
This work demonstrates a kind of lignin-derived carbon/zinc oxide (LDC/ZnO) composite prepared through a facile electrostatic self-assembling carbonization process. Solidification of the lignin/zinc oxalate precursor results in zinc oxalate (ZnC2O4) crystalizing in lignin. The crystalized ZnC2O4 particle acts as both catalysts and activators during the high-temperature carbonization process. The prepared LDC/ZnO composites show a unique 3D porous framework structure, where ZnO nanoparticles are enchased by the lignin-derived carbon nanosheets. The LDC/ZnO composites show a high pore volume, large specific surface area, and high electrical conductivity, thus demonstrating excellent electrochemical properties. LDC/ZnO-700 displays a high gravimetric capacitance (193 F·g–1 at 0.5 A·g–1), outstanding durability, and superior rate capability in a two-electrode system using the polyvinyl alcohol/KOH gel as the electrolyte. The capacitance is still maintained as 161 F g–1 at 2.0 A·g–1 after 10 000 cycles. This article provides a simple approach for preparing a lignin-derived carbon composite for energy storage and also a new way for lignin valorization.
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RSC Advances
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2016
·Vol. 6
·期 110
·108217-108228
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IF 3.289
Lujiang Xu,Zheng Han,Ying Zhang,Yao Fu
The vapor phase hydrodeoxygenation (HDO) of lignin-derived phenols under H2 atmosphere has great significance for producing high-quality fuels and commodity chemicals. Herein, we reported a simple, green method to prepare molybdenum oxide@N-doped carbon (MoOx@NC) via in situ pyrolysis of molybdenum precursor preloaded cellulose and demonstrated its catalytic performance for vapor phase HDO of lignin-derived phenols. When the pyrolysis temperature was at 600 °C, the catalyst (MoOx@NC-600) exhibited the best catalytic performance in vapor phase HDO of guaiacol. Through systematically investigating the parameters, such as: reaction temperature, WHSV, residence time, and concentration, the optimal reaction conditions for vapor phase HDO of guaiacol were 450 °C and 1 h−1 with atmospheric H2. The concentration of the feed was 20% in mesitylene, and the residence time was about 3.3 s. The carbon yield of aromatic hydrocarbons was 83.3%, with 65.7% benzene, 15.5% toluene and 2.1% alkylbenzenes. In addition, other lignin-derived phenols were also investigated and desired results were achieved with the MoOx@NC-600 catalyst. Furthermore, MoOx@NC-600 showed good stability due to the N-doped carbon formed on the surface of the MoOx particles. The catalysts were characterized using elemental analysis, AAS, BET, XRD, XPS, TEM, and EDS mapping. The high catalytic performance of MoOx@NC-600 toward lignin-derived phenols HDO can be attributed to the synergistic effect of the carbon supports and Mo5+ (molybdenum oxynitrides), Moδ+ (Mo2N) and Mo4+ on the surface of the MoOx particles.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2024
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IF 3.8
Chuhan Zhang,Yanchang Chu,Linying Fu,Qiuyue Wang,Rui Ma,Donghai Xu,Le Yang
Lignin, a renewable resource rich in aromatic ring structures in nature, is an ideal natural source to produce aromatic compounds and cycloparaffin. Herein, we prepare MOF-derived Ni–MoxC/C and Co–MoxC/C as catalysts for the depolymerization of lignin and dimeric model compounds. Diphenyl ether (DPE) with 4-O-5 bond, benzyl phenyl ether (BPE) with α-O-4, and phenethyl phenyl ether (PPE) with β-O-4 are chosen as dimeric model compounds. Overall, Ni–MoxC/C and Co–MoxC/C show distinguished different activity toward product distribution. Ni–MoxC/C facilitates both C–O bond cleavage and hydrogenation of the benzene ring, and the main products are ethyl cyclohexane and cyclohexanol for all three model compounds. In contrast, Co–MoxC/C only facilitates C–O bond cleavage and obtains phenol and ethylbenzene as products. Similarly, for the depolymerization of lignin, cycloparaffins are obtained on Ni–MoxC/C, while phenol, guaiacol, 2,6-dimethoxyphenol, and their respective derivatives are obtained on Co–MoxC/C.
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Pei-dong Wu,Lanyun Li,Hu Li,Zhen Fang
Sustainable upgrading of biomass to high-value chemicals is greatly dependent on catalytic C-C/C-O bond cleavage of high selectivity. Here, an oxidation-enhanced photoelectrochemical protocol was developed to be capable of breaking different types of C-C bonds for efficiently producing aromatic carboxylic acids (85.0–99.8% yields) from lignin. Ni local electronic state of the prepared F-Fe 2 O 3 -Co:NiO x H y with excellent durability could be modulated, and high-valence Ni(Ⅳ) reactive species played a key role in the oxidative C-C bond scission of various lignin models. In-situ characterization and control experiments indicated that photocatalytic radical and electrocatalytic interface facilitated C-H/O-H delocalization, contributing significantly to the enhanced oxidation process. In addition, quantum calculations elaborated that photo-excited holes and Ni(Ⅳ) are key reactive species for enhancive electrocatalytic cleavage of different C-C bonds in lignin to exclusively furnish aromatic carboxylic acids. This research provides a renewable funnel strategy for using solar energy to produce high-value mono-functional products from biomass.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Zhenxing Jin,Hui Gong,Bo Chen,Yuewei Jiang,Yingying Su,Jinghui Zhou,Huihui Wang,Yao Li
As wound dressings and wearable electronics advance, it is critical to develop an efficacious strategy for integrating a variety of powerful functions into hydrogels. In this work, sodium lignosulfonate‑silver nanoparticles and the functional [2-(methacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide structure (SBMA) are introduced into the multifunctional lignin-based hydrogel system. The sodium lignosulfonate‑silver nanoparticles, by catalyzing multiple redox reactions, facilitate the swift curing of hydrogels at room temperature. This process is advantageous for the structural refinement of hydrogel polymer segments and the integration of multiple functionalities. The synergistic effect of functional structure and nanoparticles bestows the hydrogel with superior adhesion, mechanical properties, antimicrobial properties and antioxidant properties. The introduction of a functional structure not only deferments the release of sodium lignosulfonate‑silver nanoparticles, but also imparts satisfactory conductivity and anti-freezing properties to the hydrogels. In applications related to wound dressings and pressure strain sensors, hydrogels demonstrate excellent potential. They effectively facilitate wound healing and enable the monitoring of limb movement. This work introduces a simple and effective approach to prepare lignin-based functional hydrogels, exhibiting significant potential for wound dressings and pressure strain sensors applications.
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PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2024
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IF 5.6
Hanzhang Wang,Junyi Zhou,Lanfang Sun,Jieying Lai,Xue Zheng,Bin Lu,Li-Ming Zhang,Wei Zhang
Biobased adhesives play a pivotal role in the development of eco-friendly wood products, and phytogenic protein as a biobased material preparation adhesive has the advantages of sustainable development and green environmental protection. Current researches focus and challenge lie in developing phytogenic protein adhesives that do not emit formaldehyde and possess high water-resistant bonding strength and anti-mold properties through the use of biobased cross-linkers instead of chemical cross-linkers. In this study, lignin, a natural polymer material, was used as raw material to fabricate a novel crosslinker, and a cross-linking network structure was constructed with lignin as the cross-linking core and multiple bonding effects of hydrogen and chemical bonds. In addition, lignin-based crosslinker was prepared to replace the chemical crosslinker while successfully activating lignin to improve the crosslinking degree between lignin and the protein matrix. This study addressed environmental pollution and cost issues associated with the extensive use of chemical cross-linkers in phytogenic protein adhesives. The water-resistant bonding strength of the prepared phytogenic protein adhesive reached 1.21 MPa, and the mechanical properties of the prepared phytogenic protein adhesive were increased by 188 % compared with the ordinary phytogenic protein adhesive and exhibited effective anti-mold properties. This research provided a novel approach for creating sustainable, environmentally friendly adhesives and held significant implications for producing industrial wood-based panels.
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JOURNAL OF CATALYSIS
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2025
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IF 6.5
Ping He,Huawei Geng,Lin Li,Qisong Yi,Lu Lin,Zhifeng Liu,Yuanshuai Liu,Valentin Valtchev
Solid acidic Al-MCM-41 materials are characterized by a high specific surface area and well-ordered hexagonally shaped mesopores. However, their relatively weak acidity compared to microporous zeolites significantly limits their practical applications in industrial catalytic reactions, particularly in upgrading biomass-derived organic feedstock that involves reactions with bulky molecules. Herein, we report a novel synthesis route for preparing acidity-enhanced Al-MCM-41 through the phase transformation of MWW-type zeolite precursors. The phase transformation approach markedly facilitates the incorporation of aluminum species into the MCM-41 framework, leading to strong Brønsted acidity of the resultant Al-MCM-41-T samples, as evidenced by comprehensive characterizations including 29 Si and 27 Al MAS NMR, NH 3 -TPD, and Py-IR. Owing to the enhanced acidity and its large pore structures, the as-prepared Al-MCM-41-T-15 sample (with Si/Al = 15) exhibited superior activity and selectivity toward C-alkylated products in both liquid-phase phenol-cyclohexanol and 4-cyclohexylphenol (4-CHP)-cyclohexene alkylation reactions compared the commercial Al-MCM-41-C with a similar Si/Al ratio. These findings afford an effective approach for preparing acidity-enhanced mesoporous solid acids, which hold significant potential for catalyzing lignin-derived bio-oils.
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DESALINATION
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2025
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IF 9.8
Yifan Liu,Yufeng Miao,Zhuo Huang,Runxuan Wang,Yunyan Peng,Xiaolong Fang,Wenbo Che,Youming Yu
Oil/water emulsion wastewater is a typical industrial and domestic wastewater that is harmful to human health and the environment. However, it is still challenging to fabricate membrane materials for separating complex surfactant-stabilized oil/water emulsions from biomass in a facile and sustainable approach. Herein, paper industry waste lignin was prepared by self-assembly and hydrophobization into modified lignin nanospheres, which were sprayed onto delignified wood to develop a lignin-wood Janus membrane with superhydrophilic and superhydrophobic surfaces. The prepared Janus wood (JW) membrane maintains its selective wettability even under harsh conditions, demonstrating excellent durability and stability. Moreover, it can efficiently separate surfactant-stabilized oil-in-water (O/W) and water-in-oil (W/O) emulsions on demand, with a separation efficiency of >99 %. It is due to the distinct wettability and hierarchical structure of JW membranes, which feature three-dimensional interconnected layered micro/nano channels (tracheids and vessels) that enable multiple and continuous separation of oil/water emulsions. In addition, the JW membrane maintains a stable and efficient oil/water emulsion separation efficiency after 10 cycles, which offers an efficient, cost-effective, sustainable, and scalable approach for applications of all-wood-based separators in the oily wastewater treatment field.
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INDUSTRIAL CROPS AND PRODUCTS
·
2024
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IF 5.6
Jianshuo Miao,Quanling Zhao,Lijun Qian,Kehao Fan,Jialong Wen,Liuting Mo,Zhiyong Qin
Wastewater with chromium is a common heavy metal pollution in industrial pollution, affecting health of human seriously, while adsorption and photocatalysis are efficient for Cr(Ⅵ) removal. The multi-layer lignin core-shell structure materials were prepared with kraft lignin/polydopamine core-shell structure material, using non-covalent bonding to induce the in-situ induction of TiO 2 . The hydroxyl group of kraft lignin and the amino group of polydopamine provided abundant adsorption active sites with adsorption capacity being 299 mg/g at pH of 2. The adsorption process conformed to the Freundlich isotherm model and the pseudo-second-order kinetic model. The removal rate of Cr(Ⅵ) reached more than 99.9 % within 10 min under simulated solar light with influence of adsorption and photocatalysis. The multi-layer lignin core-shell structure materials presented excellent antibacterial activity, with the inhibition rate against S.aureus and E.coli being 40 % under dark conditions and 99 % under simulated solar light because h + or ·OH producing by TiO 2 . The antibacterial multi-layer lignin core-shell structure materials showed good universality in water pollution treatment.
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FUEL PROCESSING TECHNOLOGY
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2024
·
IF 7.2
Xinxu Zhao,Chaoqun You,Xun Li,Yu Zhang,Fei Wang
The limited solubility of lignin in commonly used solvents poses a challenge for its depolymerization into high-value monomers. This paper investigates the solubility of alkali lignin in water, methanol, ethanol, acetone, 1,4-dioxane, and their binary solution, and examines their impact on lignin depolymerization. The distribution of depolymerization products was correlated with the chemical structure changes in various solvent. Among the solvents tested, water-acetone mixtures demonstrated exceptional solubility for alkali lignin (95.24%) and provide the highest yield of bio-oil and phenolic monomers. The enhanced solubility of guaiacol units in acetone, combined with the addition of water in the co-solvent system dramatically improved the solubility of alkali lignin. Moreover, formic acid donated hydrogen protons to facilitate lignin depolymerization and prevented the repolymerization of unstable intermediates. Optimal reaction conditions were achieved at 300 °C for 120 mins using a mixed solvent composed of water, acetone, and formic acid in a ratio of 5:5:1 ( v /v/v), corresponding to the highest yield of bio-oil with 81.45 wt%, the lowest yield of residue with 6.20 wt%, and a phenolic monomer content of 57.48%. Furthermore, this co-solvent system revealed satisfactory adaptability for converting various lignin into phenolic monomers.
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Molecular Catalysis
·
2025
·
IF 4.9
Weitao Wang,Shuang Yue,Huan Wang,Jiaqi Zhu,Zhen-Hong He,Zhao-Tie Liu
Selective oxidation of lignin-derived vanillyl alcohol to vanillin is a vital reaction due to the widely application of vanillin. From aspect of green catalysis and sustainability, metal-free based heterogeneous catalyst for the entitled reaction is promising. In the present work, Se doped boron carbonitride (Se-BCN) nanotubes catalyst was rationally prepared and employed as the metal-free catalyst for the entitled reaction. The conversion can achieve 94.4 % with the selectivity of 89.4 % at 120 °C for 4 h, which is higher than most reported metal-based catalytic system. The reasons for the enhanced activity and selectivity of Se doped BCN nanotubes catalyst were revealed from the kinetic investigation and adsorption of vanillyl alcohol and vanillin. Mechanism study reveals that radicals are involved in the entitled reaction.
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ACS Applied Polymer Materials
·
2025
·
IF 4.7
Xueru Sheng,Chi Zhang,Nan Pan,Ruisen Shi,Haiyuan Jia,Jian Zhang,Na Li,Haiqiang Shi,Bing Wang,Qingwei Ping
Transparent wood is regarded as a potential lightweight building and energy storage material with a promising future in the field of energy conservation engineering. However, the relationship between the process parameters and product performance remains unclear. Here, the authors report a lignin-based sustainable transparent wood (LTW) composite. At the same time, the preparation parameters and product performance were quantitatively analyzed in multiple dimensions. Initially, according to the response surface method of weighted regression analysis, under the optimum conditions of an impregnation temperature of 140 °C, impregnation time of 1.5 h, and phenolic ratio of 1:2, LTW-11 had the highest composite score (transmittance: 68.34%, impregnation rate: 1029.2%) and good chromatic aberration performance (L: 24.61, A: 3.50, B: 6.92). Then, linear analysis showed that the thermal performance was strongly correlated with the total color difference ΔE (R2 = 0.57983). In addition, a life cycle assessment was performed for the LTW and ETW to determine the differences between the two. The results showed that compared with ETW, the global warming potential (GWP) of LTW declined by 75.37% in the resin immersion stage and 34.58% in the resin synthesis stage. The combined decrease was 65.84%, confirming that LTW had both environmentally friendly and commercial potential to reduce environmental impact and replace traditional petroleum-based materials.
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