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Advances in enhancing hydrodeoxygenation selectivity of lignin-derived oxygenates:From synthetic strategies to fundamental techniques

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Green Energy & Environment 2025年第2期10卷 292-321页

作者： Xinru Wu Hongwei Zhang Cejun Hu Xiaojun Bao Pei Yuan National engineering Research Center of Chemical Fertilizer Catalyst College of Chemical EngineeringFuzhou UniversityFuzhou350002China college of Materials Science and engineering Fuzhou UniversityFuzhou350108China Qingyuan Innovation Laboratory Quanzhou362801China

In recent years,studies focusing on the conversion of renewable lignin-derived oxygenates(LDOs)have emphasized their potential as alternatives to fossil-based ***,LDOs,existing as complex aromatic mixtures with diverse oxygen-containing functional groups,pose a challenge as they cannot be easily separated via distillation for direct utilization.A promising solution to this challenge lies in the efficient removal of oxygen-containing functional groups from LDOs through hydrodeoxygenation(HDO),aiming to yield biomass products with singular ***,the high dissociation energy of the carbon-oxygen bond,coupled with its similarity to the hydrogenation energy of the benzene ring,creates a competition between deoxygenation and benzene ring *** hydrogen consumption and lignin properties,the preference is directed towards generating aromatic hydrocarbons rather than saturated ***,the goal is to selectively remove oxygen-containing functional groups while preserving the benzene ring *** on LDOs conversion have indicated that the design of active components and optimization of reaction conditions play pivotal roles in achieving selective deoxygenation,but a summary of the correlation between these factors and the reaction mechanism is *** review addresses this gap in knowledge by firstly summarizing the various reaction pathways for HDO of *** explores the impact of catalyst design strategies,including morphology modulation,elemental doping,and surface modification,on the adsorption-desorption dynamics between reactants and ***,we delve into the application of advanced techniques such as spectroscopic techniques and computational modeling,aiding in uncovering the true active sites in HDO reactions and understanding the interaction of reactive reactants with catalyst ***,fundamental insights into selective deoxygenation obtained through these techniqu

关键词： Hydrodeoxygenation Lignin-derived oxygenates Targeted deoxidation Catalyst design Techniques and theoretical calculation

Nano-Enhanced Dairy Scum Biodiesel Blends:Unleashing the Power of Aluminium Oxide for Sustainable and Efficient Engine Performance

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Journal of Thermal Science 2025年第1期34卷 283-302页

作者： Veeranna MODI Prasad B.RAMPURE Sunil Kumar SHETTY Madeva NAGARAL Channa Keshava NAIK N Johar MGM Muhammad Irsyad ABDULLAH Abdullah I.AL-MANSOUR Shamshad ALAM KLE college of engineering and Technology ChikodiVisvesvaraya Technological UniversityBelagavi 590018KarnatakaIndia Nitte(Deemed to be University) NMAM Institute of Technology(NMAMIT)Department of Mechanical EngineeringNitte 574110India Aircraft Research and Design Centre HALBangalore 560037KarnatakaIndia Department of Mechanical engineering BGS College of Engineering and TechnologyBengaluruAffiliated to Visvesvaraya Technological UniversityBelagaviIndia Management and Science University Selangor Darul EhsanMalaysia Department of Civil engineering College of EngineeringKing Saud UniversityRiyadh-11421Saudi Arabia

This study investigates the effect of aluminium oxide nanoparticlesaddition to biodiesel blends made from dairy milk scum on performance and combustion characteristics of the diesel *** dispersion of Al_(2)O_(3)nanoparticles in B20 blends at different concentrations was done with the help of *** number of blends were prepared for the *** Machine learning algorithms(Random Forest(RF)and CatBoost)was used for the *** results show that in comparison to biodiesel blends without nanoparticles,the kinematic viscosity and density is higher for fuel blends with *** these Fuel blends have higher calorific *** blends exhibited reduced Brake Specific Fuel Consumption(BSFC)of 2.85% than the blends without nano particles(Dairy Scum Methyl Ester Biodiesel 20%+Neat Diesel 80%(in volume),DSMEB20),57.14%less CO,40.8% less hydrocarbon,and increased NO_(x)emissions compared to conventional diesel,contributing to the development of environmentally friendly and renewable biofuel blends with *** B20NP30 is the optimal blend for performance and emission *** study concludes with findings on enhanced Brake Thermal Efficiency(BTE)of 26.29% in 3×10^(-5)(in volume)Al_(2)O_(3)nanoparticle-blended DSME B20 and other DSME B20 fuel blends,emphasizing the importance of optimal nanoparticle *** correlation matrix shows how engine load,efficiency measures(BTE,BSFC),and emissions(CO,CO_(2),NO_(x),Smoke)are connected in complex *** results help us understand the complicated dynamics of engine performance and emission characteristics ***'s diagram for BTE and BSFC shows that CatBoost-based BTE models perform superior to RF-based models during the training as well as testing *** results were obtained for CO and CO_(2)emission results.

关键词： Dairy Scum Methyl Ester Biodiesel CI engine Al_(2)O_(3)concentration

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Intricate interplay between shear stress and extrusion temperature in Mg−Al composite rods

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Transactions of Nonferrous Metals Society of China 2025年第1期35卷 105-125页

作者： Jian-xing ZHAO Chao-wei ZENG Ting YUAN Wei PENG Zhen-wei SUN Ou ZHANG Hong-jun HU college of Materials Science and engineering Chongqing University of TechnologyChongqing 400054China

The Mg−Al composite rods of aluminum core-reinforced magnesium alloy were prepared by the extrusion−shear(ES)process,and the microstructure,deformation mechanism,and mechanical properties of the Mg−Al composite rods were investigated at different extrusion temperatures and shear *** experimental results show that the proportion of dynamic recrystallization(DRX)and texture for Al and Mg alloys are controlled by the combination of temperature and shear *** texture type of the Al alloys exhibits slight variations at different *** the increase of temperature,the DRX behavior of Mg alloy shifts from discontinuous DRX(DDRX),continuous DRX(CDRX),and twin-induced DRX(TDRX)dominant to CDRX,the dislocation density in Mg alloy grains decreases significantly,and the average value of Schmid factor(SF)of the basalslip system *** particular,partial grains exhibit a distinct dominant slip system at 390℃.The hardness and thickness of the bonding layer,as well as the yield strength and elongation of the Mg alloy,reach their maximum at 360℃as a result of the intricate influence of the combined temperature and shear stress.

关键词： Mg−Al composite rod texture evolution deformation mechanism intermetallic compound extrusion−shear process

Upcycling of monomers derived from waste polyester plastics via electrocatalysis

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Journal of Energy Chemistry 2025年第2期101卷 535-561页

作者： Haoye Wang Richard Lee Smith Jr Xinhua Qi college of Environmental Science and engineering Nankai University Graduate School of Environmental Studies Tohoku University

Electrocatalysis offers efficient and targeted conversion of monomers derived from waste polyester plastics to chemical products under ambient temperature and pressure *** review provides analysis of research on electrochemical upgrading of monomers derived from waste polyester plastics published from2021 to *** for assessing upgrading of waste polyester plastics include alkaline hydrolysis pretreatment,indices of electrochemical reaction process(activity,stability,and techno-economic a nalysis),separation,and product *** of depolymerization monomers and their value-added products are summarized along with electrocatalytic mechanisms and reaction ***,cathode coupled reactions offer significant value for anodic waste plastic oxidation during electrolysis *** of bifunctional electrocatalysts can reduce the cost of coupled systems and complexity of the *** and recycling of waste plastic monomers using electrocatalytic technology should undergo downstream processing to form high-value products containing C-N and C-S derived functional groups obtained from depolymerized monomers,Electrochemical conversion and upgrading of monomers derived from waste polyester plastics can contribute to industrialization and global economies and help to realize environmental sustainability.

关键词： Coupling reaction Electrocatalysis Monomer Upgrade recycling Value-added products Waste plastics

Oversampling-Enhanced Feature Fusion-Based Hybrid ViT-1DCNN Model for Ransomware Cyber Attack Detection

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Computer Modeling in engineering & Sciences 2025年第2期142卷 1667-1695页

作者： Muhammad Armghan Latif Zohaib Mushtaq Saifur Rahman Saad Arif Salim Nasar Faraj Mursal Muhammad Irfan Haris Aziz Department of Computer and Information System Cleveland State UniversityOhio44115USA Department of Electrical Electronics and Computer SystemsCollege of Engineering and TechnologyUniversity of SargodhaSargodha40100Pakistan Electrical engineering Department College of EngineeringNajran UniversityNajran61441Saudi Arabia Department of Mechanical engineering College of EngineeringKing Faisal UniversityAl Ahsa31982Saudi Arabia Department of Mechanical Industrial and Energy System EngineeringUniversity of SargodhaSargodha40100Pakistan

Ransomware attacks pose a significant threat to critical infrastructures,demanding robust detection *** study introduces a hybrid model that combines vision transformer(ViT)and one-dimensional convolutional neural network(1DCNN)architectures to enhance ransomware detection *** common challenges in ransomware detection,particularly dataset class imbalance,the synthetic minority oversampling technique(SMOTE)is employed to generate synthetic samples for minority class,thereby improving detection *** integration of ViT and 1DCNN through feature fusion enables the model to capture both global contextual and local sequential features,resulting in comprehensive ransomware *** on the UNSW-NB15 dataset,the proposed ViT-1DCNN model achieved 98%detection accuracy with precision,recall,and F1-score metrics surpassing conventional *** approach not only reduces false positives and negatives but also offers scalability and robustness for real-world cybersecurity *** results demonstrate the model’s potential as an effective tool for proactive ransomware detection,especially in environments where evolving threats require adaptable and high-accuracy solutions.

关键词： Ransomware attacks cybersecurity vision transformer convolutional neural network feature fusion encryption threat detection

Manufacture the conducting polymer with light

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Science China Chemistry 2025年第1期68卷 8-9页

作者： Yang Li Tianyu Li Yan Ji Baoguang Liu college of Electronic and Optical engineering&college of Flexible Electronics(Future Technology) Nanjing University of Posts&TelecommunicationsNanjing 210023China

Poly(3,4-ethylenedioxythiophene)(PEDOT),heralded as the“king”of conducting polymers,is esteemed in bioelectronics for its mixed electronic and ionic conductivity,mechanical properties compatible with biological tissues,tunable healing ability and stability in diverse environments^([1]).Based on additive manufacturing of three-dimensional structures,PEDOT realizes the implementation in the efficient production of flexible bioelectronics,the construction of intricate electrode-neural implantations,and the development of smart brain-computer-interfaces^([2]).

关键词： conducting implantation additive

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Protonated carbon nitride for rapid photocatalytic sterilization via synergistic oxidative damage and physical destruction

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Journal of Environmental Sciences 2025年第3期149卷 188-199页

作者： Xiaobiao Zhu Chunhong Xu Jie Mao Yizhen Zhang Yaohui Bai Department of Environmental Science and engineering College of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029China Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China college of Safety and Environmental engineering Shandong University of Science and TechnologyQingdao 266590China

Photocatalytic disinfection is an eco-friendly strategy for countering bacterial pollution in aquatic *** strategies have been devised to facilitate the generation of reactive oxygen species(ROS)within photocatalysts,ultimately leading to the eradication of ***,the significance of the physical morphology of photocatalysts in the context of sterilization is frequently obscured,and the progress in the development of physical-chemical synergistic sterilization photocatalysts has been relatively ***,graphitic carbon nitride(g-C_(3)N_(4))is chemically protonated to expose more sharp *** fluorescence and EIS results indicate that the protonation can accelerate photogenerated carrier separation and enhance ROS ***,the sharp edges on the protonated g-C_(3)N_(4)facilitate the physical disruption of cell walls for further promoting oxidative *** C_(3)N_(4)demonstrated superior bactericidal performance than that of pristine g-C_(3)N_(4),effectively eliminating Escherichia coli within 40 minutes under *** work highlights the significance of incorporating physical and chemical synergies in photocatalyst design to enhance the disinfection efficiency of photocatalysis.

关键词： Protonated Photocatalytic Sterilization Synergistic Oxidative Damage Physical Destruction

A binary eutectic electrolyte design for high-temperature interface-compatible Zn-ion batteries

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Journal of Energy Chemistry 2025年第2期101卷 587-597页

作者： Guomin Li Wentao Wen Kefeng Ouyang Yanyi Wang Jianhui Zhu Ming Yang Hongwei Mi Ning Zhao Peixin Zhang Dingtao Ma college of Chemistry and Environmental engineering Shenzhen University School of Materials Science and engineering Harbin Institute of Technology (Shenzhen) School of Materials and Environmental engineering Shenzhen Polytechnic Guangdong Flexible Wearable Energy and Tools engineering Technology Research Center

The deterioration of aqueous zinc-ion batteries（AZIBs） is confronted with challenges such as unregulated Zn2+diffusion,dendrite growth and severe decay in battery performance under harsh ***,a design concept of eutectic electrolyte is presented by mixing long chain polymer molecules,polyethylene glycol dimethyl ether（PEGDME）,with H2O based on zinc trifluoromethyl sulfonate(Zn（OTf）2),to reconstruct the Zn2+solvated structure and in situ modified the adsorption layer on Zn electrode *** dynamics simulations（MD）,density functional theory（DFT） calculations were combined with experiment to prove that the long-chain polymer-PEGDME could effectively reduce side reactions,change the solvation structure of the electrolyte and priority absorbed on Zn（002）,achieving a stable dendrite-free Zn *** to the comprehensive regulation of solvation structure and zinc deposition by PEGDME,it can stably cycle for over 3200 h at room temperature at 0.5 mA/cm2and 0.5 mAh/*** at high-temperature environments of 60℃,it can steadily work for more than 800 cycles（1600 h）.Improved cyclic stability and rate performance of aqueous Zn‖VO2batteries in modified electrolyte were also achieved at both room and high *** that,the demonstration of stable and high-capacity Zn‖VO2pouch cells also implies its practical application.

关键词： Dendrite suppression Eutectic electrolyte High temperature Solvation structure Zn anode

Multi-interface structure design of bamboo-based carbon/Co/CoO composite electromagnetic wave absorber based on biomimetic honeycomb-shaped superstructure

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International Journal of Minerals,Metallurgy and Materials 2025年第3期32卷 631-644页

作者： Yanting Wang He Han Huiyang Bian Yanjun Li Zhichao Lou Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China college of Light Industry and Food engineering Nanjing Forestry UniversityNanjing 210037China

The rapid development of 5G communication technology and smart electronic and electrical equipment will inevitably lead to electromagnetic radiation *** heterointerface polarization relaxation through nanostructure design and interface modifica-tion has proven to be an effective strategy to obtain efficient electromagnetic wave ***,this work implements an innovative method that combines biomimetic honeycomb superstructure to constrain hierarchical porous heterostructure composed of Co/CoO nano-particles to improve the interfacial polarization *** method effectively controlled the absorption efficiency of Co^(2+)through de-lignification modification of bamboo,and combined with the bionic carbon-based natural hierarchical porous structure to achieve uniform dispersion of nanoparticles,which is conducive to the in-depth construction of heterogeneous *** addition,the multiphase struc-ture brought about by high-temperature pyrolysis provides the best dielectric loss and impedance matching for the ***,the obtained bamboo-based Co/CoO multiphase composite showed excellent electromagnetic wave absorption performance,achieving excel-lent reflection loss(RL)of-79 dB and effective absorption band width of 4.12 GHz(6.84-10.96 GHz)at low load of 15wt%.Among them,the material’s optimal radar cross-section(RCS)reduction value can reach 31.9 dB·m^(2).This work provides a new approach to the micro-control and comprehensive optimization of macro-design of microwave absorbers,and offers new ideas for the high-value utiliza-tion of biomass materials.

关键词： biomass honeycomb porous heterojunction structure interfacial polarization electromagnetic wave absorption

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