ELECTROCHIMICA ACTA
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2017
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IF 4.798
Hailan Huang,Chunlei Han,Guanwen Wang,Chunhua Feng
The development of renewable, low-cost, and high-efficiency cathode materials for oxygen reduction to H 2 O 2 is desirable for use in electro-Fenton systems for the oxidative treatment of wastewater. In the present study, we report the synthesis of a renewable biopolymer with lignin (lig) interpenetrated into a polypyrrole (PPy) framework via a simple one-step electropolymerization method. This allows the formation of PPy/lig composites that are uniformly coated on a graphite felt (GF) substrate, having large surface area, increased mechanical stability, and abundant C O (including quinone-type) groups. These features improved the electrocatalytic activity of the PPy/lig-GF cathode for oxygen reduction to H 2 O 2 when an optimal cathodic potential (−0.5 V vs. SCE) was applied, as evidenced by the observed higher H 2 O 2 electro-generation yield and efficiency compared to the raw GF and PPy/ClO 4 − -GF cathodes. Electro-Fenton systems equipped with the GF cathodes (either modified or unmodified) for the decolorization and mineralization of AO7 (an azo dye) followed a pseudo-first-order kinetic model . The PPy/lig-GF cathode achieved substantially higher rate constants and degradation efficiencies. In addition, the incorporation of lignin significantly improved the cycling stability of the cathode material.
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ACS Applied Materials & Interfaces
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2020
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IF 8.758
Yushan Liu,Haiyue Yang,Chunhui Ma,Sha Luo,Mingcong Xu,Zhenwei Wu,Wei Li,Shouxin Liu
Formaldehyde (FA) is a widespread indoor air pollutant, and its efficient detection is a major industrial challenge. The development of a building material with real-time and visual self-detection of FA gas is highly desirable for meeting both construction and human health demands. Herein, a luminescent transparent wood (LTW) as the building material was developed for dual-channel, real-time, and visual detection of FA gas. It was fabricated by encapsulating multicolor lignin-derived carbon dots (CDs) and poly(vinyl alcohol) (PVA) into a delignified wood framework. It exhibited 85% optical transmittance, tunable room-temperature phosphorescence (RTP), and ratiometric fluorescence (FL) emission. The tunable luminescence was attributed to different CD graphitization and surface functionalization. The color-responsive ratiometric FL and delayed RTP detections of FA were displayed over the range of 20–1500 μM (R2 = 0.966, LOD = 1.08 nM) and 20–2000 μM (R2 = 0.977, LOD = 45.8 nM), respectively. The LTW was also used as an encapsulation film on a UV-emitting InGaN chip to form white light-emitting diodes, indicating the feasibility as an FA-responsive planar light source. The operational notion of functional LTW can expand its applications to new fields such as a stimuli-responsive light-transmitting window or planar light sources while monitoring indoor air pollutants, temperature, and humidity.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
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IF 8.5
Tianyu Wang,Ming Li,Zhengzhe Wu,Jiye Teng,Jingliang Xu,Hanjie Ying,Wenlong Xiong,Chenjie Zhu
Lignin/silica hybrids are promising rubber-reinforcing fillers because of their low cost and renewability. Phosphorylated kraft lignin (PKL), Na 2 SiO 3 ·9H 2 O, and styrene-butadiene rubber (SBR) were used in this study to prepare a PKL-SiO 2 /SBR complex via a simple one-pot method. The PKL-SiO 2 /SBR complex was subsequently processed to produce rubber composite materials. PKL was successfully synthesized, as shown by the results of Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), and X-ray photoelectron spectroscopy (XPS). The as-prepared lignin/silica hybrid “PKL-SiO 2 ” formed microspheres with an average particle size of 447.5 nm, a mass ratio (PKL:SiO 2 ) of 43.6 %, and weak hydrophilicity. Compared with carbon black-filled rubber, the PKL-SiO 2 /SBR composites had better mechanical properties but lower rolling resistance and dynamic heat generation. These characteristics were attributed to the fact that the small PKL-SiO 2 fillers were uniformly dispersed in the rubber matrix and exhibited strong interfacial affinity for the rubber matrix. Moreover, PKL-SiO 2 contributed to the formation of an insulating layer on the rubber surface, thereby reducing the total heat release and total smoke production. This study provides scalable and cost-effective ways to fabricate rubber composite materials that are reinforced by renewable biobased functional fillers.
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2022
·
IF 7.305
Jintao Huang,Jingtao Su,Weihao Xu,Jiahui Lin,Mengman Weng,Yidong Liu,Yonggang Min
Liquid-solid organic phase change materials (PCMs) exist shortcomings of leakage, poor solar-to-thermal conversion efficiency, and flammability , which restrict the application scope of solar-thermal energy storage. To meet these problems, PCMs (ZrP-PI@PEG) with excellent thermal energy storage, solar-to-thermal conversion, and flame retardancy were fabricated in this study. The polyimide (PI)/sodium lignosulfonate-zirconium phosphate (SL-ZrP) hybrid-aerogels (ZrP-PI) were prepared by freeze-drying and thermal imidization. ZrP-PI aerogels composited with polyethylene glycol (PEG) via vacuum impregnation to fabricate the composite PCMs (CPCMs, ZrP-PI@PEG). The in-situ biochar generated from SL-ZrP increases both solar-to-thermal conversion and flame retardant of CPCMs. The final result demonstrates that ZrP-PI@PEG exhibits a superior adsorption ratio (95.5%) and outstanding latent heat (157.67 J/g), as well as about 13% flame retardant index decrease in heat release rate (HRR) and total heat release rate (THR). Furthermore, ZrP-PI@PEG shows great thermal stability and reliability after conducting a leakage experiment and thermal cycling test. These superior resultants indicate that ZrP-PI@PEG has a good potential for widespread and long-term use in solar thermal energy storage.
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Collagen and Leather
·
2024
·Vol. 6
·期 1
·1-16
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IF 0
Xu Hongsen,Shaoyu Jingwen,Jin Junyang,Li Ming,Ji Lei,Zhuang Wei,Tang Chenglun,Chang Zhiwei,Ying Hanjie,Zhu Chenjie
As one of the mainstream biodegradable materials, poly(butylene adipate-co-terephthalate) (PBAT) foams offer a sustainable alternative to traditional plastic foams, effectively reducing environmental pollution. However, the high cost and poor mechanical performance of PBAT foams impede their practical application. Herein, the glycidyl methacrylate-grafted biomass lignin (GML) was used to produce a PBAT/GML composite foam with good foaming performance and mechanical properties at high lignin-filling amounts by twin-screw melting free radical polymerization and supercritical CO 2 foaming process. The compatibility of GML in the PBAT matrix was improved due to the formation of ester bonds in modified lignin, endowing the PBAT/GML (PGML) composite foam with exceptional foaming performance. Additionally, the mechanical properties of PGML composite foam were remarkably enhanced due to the introduction of the abundant aromatic structures of GML and the construction of a stable covalent crosslinking network. The compressive strengths and compression modulus of the PGML foam were improved by 2.53 times and 2.47 times, while its bending strength and bending modulus were improved by 1.27 times and 3.92 times compared to the neat PBAT. This research affords a new strategy for developing low-cost biodegradable biomass PBAT/lignin composite foam materials with good foaming performance and mechanical properties. Graphical abstract
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BIORESOURCE TECHNOLOGY
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2021
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IF 9.642
Shuang Xue,Zhongyang Luo,Qingguo Zhou,Haoran Sun,Liwen Du
Novel preparation of molybdenum modified bimetallic micro-mesoporous catalyst was proposed innovatively to conduct catalytic fast pyrolysis of enzymatic hydrolysis lignin. The optimal catalytic characterization of the prepared catalyst was attributed to appropriate porous structure, the interaction between zeolite support and metal species, and the synergetic and stable mechanism of bimetallic active sites. With the incorporation of metal species into micro-mesoporous catalyst, the distribution of active sites experienced a regulation, which contributed to MAHs production and cracking of oxygen-containing substances. NiMo/AZM catalyst exhibited the most obvious coke inhibition effect (8.47 wt% of mass yield) and converted more high-ordered graphite carbon to low-ordered one, so as to make it easier to remove and prolong the catalyst lifetime, and obtained the highest mass yield of MAHs (13.15 wt%) as well as the minimum selectivity of bulky oxygenates (3.82%), which was the joint contribution of three key parameters.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Qunfeng Chen,Daobin Tang,Qi Zhang,Zhiyuan Tang,Longlong Ma,Xinghua Zhang
Electron-metal support interactions (EMSI), which can tailor the microenvironment through electron transfer and coordination structure design, are an effective strategy to augment the intrinsic catalytic activity of catalysts. However, it remains challenging to establish the interfacial structure and interfacial electron configuration of catalysts to precisely regulate and enhance EMSI. In this work, the spatially defective sites and specific electronic states of Pd-UiO-66 were modified by in-situ constructing a W-O-Zr interface to strengthen the EMSI between Pd nanoparticles (Pd NPs) and UiO-66 support via implanting W into the defective Pd-UiO-66, realizing the effective hydrodeoxygenation (HDO) of vanillin (VAN) at room temperature (RT). The as-prepared catalyst Pd-UiO-66–0.24 W achieved > 99 % conversion of VAN and > 99 % yield of 2-methoxy-4-methylphenol (MMP) within 12 h, which surpassed the previous reports. The DFT analysis revealed that the narrow band-gap energy between Pd-UiO-66–0.24 W and H 2 molecule, along with the σ or π coordination adsorption between p and d orbitals of the implanted W and O in C=O, facilitated the activation of the H 2 molecules and reactant molecules. In addition, the constructed electron-deficient W-O-Zr interfacial sites provided more acidic sites that favor the cleavage of C-O bonds, promoting the HDO process of VAN. This work provides important insights into the modulation of EMSI, structural defects and acidic sites of metal–organic frameworks (MOFs)-based catalysts for efficient HDO of lignin-derived oxygenated compounds.
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Journal of Environmental Chemical Engineering
·
2025
·Vol. 14
·期 1
·120793
·
IF 7.2
Yueyue Song,Baihong Li,Yunyu Guo,Chao Li,Yangfan Zhang,Lijun Zhang,Shu Zhang,Xun Hu
N-functionalized biochar has versatile applications, and co-pyrolysis of nitrogen-rich food wastes such as tofu and biomass is a method for production of N-containing biochar (BC). Herein, co-pyrolysis of tofu and cellulose, lignin, or peach wood (PW) was conducted at 400 °C, aiming to probe capability of different components of biomass for retaining tofu-derived nitrogen species in biochar through potential cross-reactions. The results showed that cross-interactions among volatiles or biochar from different sources during the co-pyrolysis did exist, which produced more gases, especially CO 2 from cracking of tofu-derived amino acids. This also enhanced deoxygenation in co-pyrolysis of tofu/cellulose and tofu/peach, producing oxygen-deficient biochar with enhanced aromatic degree and thermal stability. The co-pyrolysis of tofu and cellulose enhanced the retention of N species in the resulting biochar-tofu/cellulose (nitrogen content: 7.1 % versus 4.5 % of calculated value), and similar result was observed in co-pyrolysis of tofu and peach (nitrogen content: 6.2 % versus 4.5 %). The sugary intermediates from degradation of cellulose/peach reacted with tofu-derived nitrogen-containing organics via Maillard reaction to fix nitrogen on/in biochar. In-situ IR measurement confirmed consumption of carbonyl containing intermediates with simultaneous formation of C-N species in the co-pyrolysis. The nitrogen species also acted as “glue” in the co-pyrolysis for binding biochar particles to form cluster morphology and acted as anchoring sites for enhancing adsorption of alkaline fuchsin.
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Small
·
2025
·
IF 12.1
Xinyu Cao,Liancen Li,Guangfu Qian,Qizhi Xie,Yuxuan Xie,Jiawei Li,Yunpeng Wang,Minsheng Lu,Jinli Chen,Panagiotis Tsiakaras
Developing efficient pH-universal hydrogen evolution electrocatalysts is critically needed yet challenged by pH-dependent. Here, a lignin-derived carbon-supported Ni/Cu/MoO 2 heterostructure (Ni/Cu/MoO 2 @LC) through multiphase interfaces design is engineered, which displays excellent electrochemical activity, featuring low potentials of −14.4/−201.5 (acidic), −44.5/−615.7 (neutral), and −28.2/−242.3 mV (alkaline) at −10/−1000 mA cm −2 . Theoretical and experimental analysis show that the Ni/Cu/MoO 2 @LC multiphase interfaces produce a synergistic coupling of compressive-tensile strains and interfacial electron transfer effect. This synergistic effect triggers electron redistribution, tailors the electronic configuration through d -band center optimization, and balances intermediate adsorption/desorption energetics. Additionally, lignin-derived carbon self-supported micro-nano-array structure enhances gas-liquid transport and corrosion resistance, allowing Ni/Cu/MoO 2 @LC to operate stably for at least 120 h, at −500 mA cm −2 in various pH solutions. Thus, this study provides a new idea for the design of cost-effective pH-universal HER electrocatalysts and a new approach for applying lignin-derived carbon in electrocatalysis.
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GREEN CHEMISTRY
·
2025
·
IF 9.2
Xin-Yao Ye,Xin-Yi Hui,Qian Sun,Chen Zhang,Si Hong,Jia-Long Wen,Tong-Qi Yuan
High-purity dissolving pulp is essential for synthesizing advanced cellulose derivatives such as cellulose acetate (CA). However, conventional pulping and bleaching methods often involve energy-intensive, high-temperature, and lengthy processes that hinder sustainable production. This study explored four green pulping systems—choline chloride/lactic acid, benzyltriethylammonium chloride/formic acid (BTEAC/FA), p-toluenesulfonic acid, and γ-valerolactone—to sustainably produce high-quality bamboo dissolving pulp, enhancing lignin valorization and solvent recovery. Among these, the BTEAC/FA system (130 °C, 2 h) yielded crude pulp that, after simple two-step bleaching, produced high-grade dissolving pulp with 0.14% hemicellulose, 97.36% cellulose, and 90.20% Fock reactivity. The resulting CA exhibited a high degree of substitution (2.92) and excellent spinning dope transparency (hazen value of 21.5), outperforming bleached kraft-based and commercial CA. Simultaneously, the by-product lignin, with high purity (90.76%) and abundant phenolic hydroxyl groups (3.28 mmol g−1), was readily self-assembled into uniformly dispersed spherical lignin nanoparticles (∼34.89 nm) that effectively stabilized Pickering emulsions. After four cycles, the bleached BTEAC/FA-prepared pulp retained 85.11% α-cellulose. Meanwhile, nanoparticles derived from recycled lignin formed highly durable Pickering emulsions, maintaining droplet sizes of 10.93 μm after 105 days. Additionally, the fourth-recycled DES was valorized into a high-strength wood adhesive, enabling a closed-loop and green processing. Overall, the integrated process provides a mild, low-emission route to produce acetification-grade dissolving pulp while simultaneously offering the strategic employment of the by-product lignin and DES waste liquids, which promote the development of sustainable biorefinery.
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JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Chenyu Wu,Pengfei Lu,Nan Zhang,Xiang Luo,Wenxiu Lin,Yue Tang,Xiaohong Chen,Shengjuan Li,Lei Li
Lignin has attracted significant attention for its complicated structures and potential to produce high-value carbon materials from low-cost waste. The present work demonstrates successful water-based electrospinning of lignin-based carbon fiber (LCFs) precursors, despite challenges posed by high lignin content. The diameters of precursor fibers decreased as lignin content increased. After carbonization, porous carbon fibers with an average diameter of 72 ± 27 nm were successfully fabricated. Such CFs exhibited a high specific surface area. When loaded with Ag nanoparticles, LCFs-Ag exhibited remarkable electrocatalytic performance, including an oxygen reduction reaction (ORR) half-wave potential of 0.85 V and an oxygen evolution reaction (OER) overpotential of 0.382 V at 10 mA cm −2 . This performance is on par with Pt/C and IrO 2 . Rechargeable liquid zinc-air batteries (LZABs) assembled with LCFs-Ag yielded an open-circuit voltage of 1.50 V, a peak power density of 135.9 mW cm −2 , and cycling stability of over 400 h, outperforming LZABs with a Pt/C + IrO 2 cathode under identical experimental conditions. The present work highlights that water-based electrospinning of lignin can be used to convert waste into a valuable resource, producing carbon fibers with excellent electrocatalytic properties for rechargeable zinc-air battery applications.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Xin Zhang,Hongye Wu,Mao Chen,Zhili Li
Magnetic iron oxide confined in carbon capsules/biochar composite (FeOx@g-BC) was created using in-situ synchronous pyrolysis of alkali lignin as a low-cost carbon source. Characterization results indicated the FeOx was confined in carbon nanotubes and carbon capsules, inhibiting growing of nanoparticles and deactivation. The composite catalyst demonstrated significant activity in activating H 2 O 2 for the degradation of persistent organic pollutants in water over a wide pH range. Particularly, tetracycline (TC) could be completely degraded within 25 min, even at a high pH of 6.8, which performed much better than previously reported Fenton-like catalysts. Moreover, the excellent magnetism of FeOx@g-BC aided in its recovery and reuse. The stability of FeOx@g-BC recycling was also measured by continuous cycles of reactions. According to ESR analysis and free radical quenching studies, OH and 1 O 2 were discovered as the dominant active species governing the degradation of TC, and two pathways of TC degradation were proposed. This study developed a novel heterogeneous catalyst for catalytic degradation of persistent organic contaminants in water by the value-added usage of lignin.
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