ENERGY & FUELS
·
2024
·
IF 5.2
Qiqi Liang,Yan Fu,Shuaishuai Qiu,Jie Chang
The production of fuel and chemicals from renewable lignin supplies a sustainable chemical engineering process. In this study, Co–Pd bimetallic supported on porous polymer-derived nitrogen-doped carbon spheres (NDCS) was employed for the selective hydrogenolysis of organosolv lignin. Most of the products are phenolic monomers. At optimal conditions, 2.5 MPa H2, 280 °C for 5 h, 86.74% liquefaction of lignin and 36.38 wt % yield of phenolic monomers were obtained. Among these monomer products, 60.83% were identified as 4-hydroxy-3,5-dimethoxyphenylacetic acid (22.13 wt % yield), which is an important pharmaceutical intermediate. With the help of the characterization of catalysts and hydrogenolysis products, the reaction mechanism was proposed. The NDCS provided the prerequisites for metal anchoring and dispersion, and smaller metal particle sizes (2.56 nm) were obtained compared to those of undoped nitrogen carriers. Meanwhile, the synergistic interaction between Pd0 and Co0 promoted the conversion of active hydrogen. With active hydrogen, the C–C and C–O bonds in the lignin were cleaved, and then the active O was transferred to the Pd2+ and Co2+ sites and catalyzed the oxidation of 4-allyl-2,6-dimethoxyphenol to 4-hydroxy-3,5-dimethoxyphenylacetic acid. Lastly, cycling experiments demonstrated the remarkable stability of the catalyst.
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高影响因子
Carbon Energy
·
2025
·
IF 24.2
Hang Wang,Ganmao Su,Xianxian Lin,Yan Qing,Yiqiang Wu,Fuxiang Chu,Fuquan Xiong
Selective CO 2 photoreduction via artificial photocatalysis into high-value chemical feedstocks such as CO is a productive strategy for remitting environmental problems and energy crises. Nevertheless, photocatalysts generally endure low activity and poor product selectivity due to the low light/CO 2 capture and slow dynamic transfer of photogenerated electrons. Herein, we describe an all-in-one lignin-based artificial thylakoid nanovesicle (AiO-L-ATN) using the confined growth strategy of lignin molecules, inspired by the chloroplast's photosynthesis mechanism. Such AiO-L-ATN possesses a high CO generation rate of 98.8 μmol g −1 h −1 at normalized active mass with a satisfactory selectivity of 92.1% in a gas-solid system with H 2 O, exceeding 26 times that of the primary ZnCdS. Besides, introducing carbon nanovesicles significantly improves CO 2 capture performance, narrows the band gap, expands the wavelength range of light absorption, and accelerates the separation of photogenerated electrons. Density functional theory (DFT) calculation reveals that the carbon nanovesicles with various functional groups favor *CO 2 adsorption, *COOH production and conversion, as well as accelerate the dynamic transfer of photogenerated electrons, thereby endowing the outstanding CO 2 reduction rate and CO selectivity of AiO-L-ATN. This study not only provides valuable insights into the preparation of highly efficient photocatalysts but also offers novel avenues for CO 2 photoreduction.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Liancen Li,Litao Ge,Guangfu Qian,Yunpeng Wang,Jiawei Li,Xinyu Cao,Yihao Xu,Ruyu Zhang,Jinli Chen,Panagiotis Tsiakaras
Although nickel-based catalysts exhibit certain urea electrolysis performance, their application is hindered by the sluggish indirect or direct urea oxidation reaction (UOR) and either the Volmer-Tafel or Heyrovsky mechanism of hydrogen evolution reaction (HER). Herein, we propose utilizing interfacial lattice strain and electronic transfer induced by lignin-derived carbon coupled with Ni-Mn 2 Mo 3 O 8 heterojunction (denoted as Ni-Mn 2 Mo 3 O 8 @C) to increase the lattice imperfection and adjust electronic structure, enhancing its urea electrolysis activity. Ni-Mn 2 Mo 3 O 8 @C exhibits low potentials for UOR ( E 10/1000/2000mA = 1.21/1.33/1.41 V) and HER ( E -10/-1000/-2000mA = -52.57/-329.41/-362.46 mV), which undergoes fast direct oxidation reaction for UOR and Volmer-Heyrovsky steps for HER. Meanwhile, Ni-Mn 2 Mo 3 O 8 @C operates stably at 1000 mA cm −2 for 140 hours in membrane electrode assembly, due to the corrosion resistance of lignin-derived carbon and superhydrophilicity of self-supported porous structure. This work proposes a promising catalyst for HER/UOR and demonstrates a feasible route to designing nickel-based catalysts in practical applications of urea electrolysis.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Zixin Xie,Xihong Zu,Qianwei Lai,Yicheng Cao,Xueqing Qiu
Hydrogen production by biomass electrolysis offers a promising and sustainable route for producing green hydrogen and high-value utilization of biomass. However, this process consumes electricity and suffers from low anode Faraday efficiency of the organic electro-oxidation reaction. Herein, we develop a novel strategy that integrates a room-temperature, high-power lignin-derived aldehyde flow fuel cell (FFC) with hydrogen production, which converts the power-consuming electrocatalytic hydrogen production step into an electricity-generating process. The highly active Ag-Cu x O/CF (copper foam) electrocatalyst exhibits dual functionality of efficient electricity generation and simultaneous hydrogen production by catalyzing low-potential aldehyde group oxidation at the anode, which concurrently releases electrons and generates hydrogen. The Ag-Cu x O/CF electrocatalyst can significantly improve the electron transfer rate and catalytic conversion efficiency of the anode, attributable to its mixed Cu 0 /Cu + valence states, enlarged double-layer capacitance (C dl ), reduced interfacial resistance, and optimized adsorption capacity. The Ag-Cu x O/CF catalyst achieves ∼95 % benzaldehyde conversion and ∼98.4 % Faradaic efficiency for hydrogen production at 0.35 V RHE . Furthermore, the FFC based on Ag-Cu x O/CF electrocatalyst demonstrated excellent dual-functionality at room temperature, achieving both a power density of 173.5 mW cm −2 and a hydrogen production rate of 1.96 mmol cm −2 h −1 . The constructed FFC achieved a room-temperature power density threefold greater than the reported lignin-based power generation technology, while maintaining comparable hydrogen production rate to biomass electrolysis processes. This study provides a novel approach to reduce the cost of green hydrogen production and mitigate the global energy crisis.
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高影响因子
ACS Nano
·
2022
·
IF 18.027
Chengke Zhao,Jiali Yang,Mingfeng Chen,Wenjun Chen,Xinyuan Yang,Heng Ye,Liying Wang,Yong Wang,Jinjin Shi,Fengxia Yue,Xing Ma
Oral drug delivery is a common route for management of inflammatory bowel disease (IBD) but suffers from low bioavailability and systemic side effects during passage through the alimentary canal. Here, we present a therapeutic nano reagent of a ferulic acid-derived lignin nanoparticle (FALNP). We showed that FALNP with favorable antioxidant activity can regulate IBD. More importantly, the intestinal pH-responsive degradability of FALNP allows it to withstand the harsh gastric acid environment, bypass physiological barriers, and target the intestine for gastrointestinal delivery. In vivo experiments showed that oral administration of FALNP markedly relieved pathological symptoms in a mouse model of acute colitis by reducing oxidative stress and regulating the gut microbiome. By integrating anti-inflammatory medicine, FALNP also can be used as a bioactive carrier to exert a potent synergistic therapeutic effect. In addition to colitis, FALNP can be readily adaptable for use as a carrier platform for therapy of many other intestinal diseases.
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
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IF 8.5
Shaowei Bai,Xuechen Hou,Bing Bai,Yuhuan Yang,Yufeng Hu,Fan Wang,Yan Yang,Zuoming Zhang
Utilizing lignocellulosic biomass effectively can lessen reliance on fossil fuels and facilitate the production of second-generation biorefinery feedstocks. The nonspecific binding of lignin to cellulases is one of the main factors affecting their enzymatic performance and hampering their efficiency in degrading lignocellulose. Processive endocellulase from Acidothermus cellulolyticus 11B has a modular structure consisting of several carbohydrate-binding modules, a glycoside hydrolase family 9 catalytic domain, and a fibronectin type III (FN3) domain. This study investigated the role of the FN3 in the degradation of lignocellulose by constructing multiple mutants. The results showed that the FN3 could improve the thermal stability of the enzyme and resist the nonspecific binding of lignin to cellulase. This characteristic can significantly increase the lignocellulose's enzymatic efficiency and offer a novel approach to the artificial design of multi-modular cellulases.
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PubMed
高影响因子
Sustainable Energy & Fuels
·
2022
·Vol. 6
·期 11
·2745-2754
·
IF 6.813
Hua Tan,Xuecheng Li,Hao Ma,Xiaolin Yang,Tong Zhan,Wenyu Xie,Suhua Wang,Jiaping Zhu
Herein, N-doped carbon embedded Ni catalysts were prepared by a co-impregnation method followed by pyrolysis in a N2 atmosphere for transfer hydrogenolysis of lignin β-O-4 alcohol and ketone model compounds using isopropanol as the hydrogen source. It was found that pyrolysis at 800 °C resulted in the formation of graphitic N-doped carbon shell encapsulated Ni nanoparticles (Ni@NC-800). The obtained Ni@NC-800 exhibited higher activity and selectivity to aromatics in the conversion of 2-phenoxy-1-phenylthanol and 2-phenoxyacetophenone, compared with Ni@NC-600 and Ni/NC-800. Moreover, the selectivity to aromatics could be further improved over Ni@NC-800-H, which is Ni@NC-800 after strong acid leaching. However, the presence of Cα–OH in lignin β-O-4 model compounds was essential for their product distributions. The control and characterization experiments suggested that the catalytic reaction occurred on the surface of N-doped carbon shells, because the encapsulated Ni NPs could donate electrons to the outer shells, leading to surface electron enrichment, thus making inert shells the new active sites in Ni@NC-800-H. In addition, Ni@NC-800-H was efficient for the conversion of various lignin β-O-4 alcohol and ketone model compounds with methoxyl groups with high yields of the aromatic products and also possessed high stability during consecutive reaction runs, which is because Ni nanoparticles are physically isolated from the reactive environment.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
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IF 9.965
Lingli Zhu,Dekui Shen,Kai Hong Luo
Considering that hexavalent chromium ions (Cr 6+ ) with high toxicity poses a huge threat to human health and the ecological environment, constructing a rapid and accurate sensing platform is of great significance in detecting the toxic substance. The novel nitrogen and boron co-doped carbon quantum dots (N, B-CQDs) from lignin are synthesized as fluorescent sensors for the detection of Cr 6+ . The synthetic processes involve the acid hydrolysis step followed by the hydrothermal treatment step. Lignin is firstly depolymerized by cleaving ether bonds in the acidolysis , and N, B-CQDs are consequently formed by the aromatic re-fusion of lignin nanoparticles in the hydrothermal process. The lignin-derived N, B-CQDs show triple emission of purple, blue and green fluorescence under the excitation of 300, 330, and 490 nm, respectively. The triple-emission N, B-CQDs are applied for the triple-channel detection of Cr 6+ , which exhibit highly sensitive and selective fluorescence quenching for Cr 6+ with good linearity (R 2 ≤ 0.996) and very low limit of detection as 0.054, 0.049, and 0.077 μM under the excitation of 300, 330 and 490 nm, respectively. The utilization of renewable lignin as CQDs-based fluorescent sensors opens a new avenue for the rapid and accurate detection of Cr 6+ through a multichannel sensing platform.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Atian Xie,Jiangdong Dai,Xiang Chen,Ping Ma,Jinsong He,Chunxiang Li,Zhiping Zhou,Yongsheng Yan
In decade years, antibiotics residual has received considerable attention because of their detrimental effects on human health and the ecosystem, thereby resolution of this issue become a burning research project. Herein, we first prepared a novel sustainable hierarchical porous carbons (HPCs) (named LCTA) via the combination of halloysite nanotubes-template and in-situ KOH activation, using industrial by-product sodium lignin sulfonate (SLS) as biomass precursor. It was demonstrated that both HNTs template and KOH activation played a key role in the enhancements of the porosity and accessible surface. LTCA exhibited a high specific surface area of 2320 m 2 /g and large pore volume of 1.342 cm 3 /g. Moreover, LTCA showed an ultrahigh adsorption capacity for tetracycline (TC) of 1297.0 mg/g and chloramphenicol (CAP) of 1067.2 mg/g at 298 K, which are far higher than those adsorbents previously reported. Additionally, fast adsorption kinetics, excellent environmental adaptability and good regeneration ability make this novel HPC as a promising material for antibiotics wastewater treatment practices.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Wei-Dong Xiao,Ling-Ping Xiao,Yi-Hui Lv,Wen-Zheng Yin,Julio Sánchez,Shang-Ru Zhai,Qing-Da An,Run-Cang Sun
Efficient removal of heavy metal ions and organic pollutants in wastewater is of great significance to healthy development of ecosystems. However, the facile preparation of novel functional materials for robust removal of both types of contaminants still remain a challenge. Herein, bifunctional composites derived from nanoscale zero-valent iron (nZVI) coated with lignin-derived carbon (LC) were fabricated via a carbothermal reduction strategy and denoted as Fe 0 @LC. This hybrid material exhibits superior performance with a maximum heavy metal removal amount of Cr(VI) as high as 575.4 mg/g from aqueous solutions. Notably, the elimination rate of Cr(VI) (100 mg/L) by Fe 0 @LC could reach up to 100% through adsorption and reduction. Furthermore, the obtained Fe 0 @LC occurs Fenton-like reactions without additional supply of H 2 O 2 toward effective degradation of organic pollutants, including 100%, 100% and 80% for methylene blue, methyl orange and congo red, respectively. The in-depth experimental and theoretical analyses reveal the synergistic effects between the catalytic Fe 0 center and the lignin-derived carbon boost the activity for catalytic degradation of organic dyes and Cr(VI) in the optimized conditions. This work not only provides critical insights into rational design, working mechanism, and application of bio-functional materials for wastewater treatment, but also achieves the goal of “treating waste with waste”.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Jingliang Xu,Minghai Wang,Md. Asraful Alam,Gul Muhammad,Yongkun Lv,Chenjie Zhu,Haoran Zhang,Wenlong Xiong
When a conventional aqueous ZnSO4 solution is used as the electrolyte, rechargeable aqueous Zn/MnO2 batteries suffer from inferior electrochemical performance because of the corrosion, dendrites, and passivation on zinc anodes. Herein, a novel gel electrolyte was fabricated by adding lignin/fumed silica composites to the reference aqueous electrolyte (RAE) (2 M ZnSO4 + 0.2 M MnSO4) for the purpose of mitigating the aforementioned issues of zinc anodes. Results of linear polarization and chronoamperometry showed that the as-prepared gel electrolyte reduced deterioration on zinc (up to 38.9%) and supported planar zinc deposits. Batteries using this gel electrolyte presented a higher open-circuit voltage after 24 h of monitoring and superior rate performance compared to batteries using the RAE. Most importantly, the discharge capacity of the batteries using this gel electrolyte after 3000 cycles at 1.5 A g–1 was still up to 106.2 mA h g–1, which was much higher than that (39.6 mA h g–1) of the batteries using the RAE. Observation through X-ray diffraction and scanning electron microscopy characterizations of the post-run zinc anodes revealed that this gel electrolyte could strongly inhibit the formation of zinc dendrites and reduce the production of byproducts (3Zn(OH)2·ZnSO4·xH2O) during the operation of the battery. This study is highly significant to the development of advanced aqueous batteries with high safety.
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高影响因子
CARBON
·
2021
·
IF 9.594
Meilian Cao,Qingxiang Wang,Wanli Cheng,Siqi Huan,Yi Hu,Zhaoxuan Niu,Guangping Han,Haitao Cheng,Ge Wang
Despite the great advantages of interconnected porous architectures of three-dimensional carbon as functional materials , apparent common drawbacks restricting their widespread applications are high cost and non-renewable of the carbon precursors and complicated activation procedures. In this study, biomass-derived honeycomb-like multilayered carbon (HMC) is synthesized by electrospraying and direct carbonization for the first time. Poly (methyl methacrylate) (PMMA) is mixed with biomass-derived lignin, the only carbon source, to form lignin/PMMA microspheres and microbowls by electrospraying. One-step carbonization of prepared micromaterials to obtain ultralight HMC, and the microstructures and pore size of carbon materials are controllable by adjusting the applied voltage of electrospraying. The obtained HMC-13 by carbonization of lignin/PMMA microspheres possesses interconnected carbon skeleton, partially graphitized structure and hierarchical pore system composed of macropores, mesopores and micropores. Benefiting from the structural advantages, HMC-13 as electrode of supercapacitor delivers a high specific capacitance of 348 F g −1 at 0.5 A g −1 in aqueous electrolytes. Additionally, the supercapacitor exhibits excellent cycling stability with only 4% capacitance loss after 10 000 cycles. Based on these encouraging results, environmental friendliness and facile synthesis strategy, the biomass-derived ultralight porous carbon material holds great promise for facilitating wasted biomass utilization and developing sustainable energy products.
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高影响因子
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