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A highly sensitive electrochemical sensor based on poly(3-aminobenzoic acid)/graphene oxide-gold nanoparticles modified screen printed carbon electrode for paraquat detection

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Journal of Environmental sciences 2025年第2期148卷 139-150页

作者： Dechnarong Pimalai Thitirat Putnin Suwussa Bamrungsap National nanotechnology Center(NANOTEC) National Science and Technology Development Agency(NSTDA)Pathum Thani 12120Thailand

Herein,a modified screen printed carbon electrode(SPCE)based on a composite material,graphene oxide-gold nanoparticles(GO-AuNPs),and poly(3-aminobenzoic acid)(P3ABA)for the detection of paraquat(PQ)is *** modified electrode was fabricated by drop casting of the GO-AuNPs,followed by electropolymerization of 3-aminobenzoic acid to achieve SPCE/GO-AuNPs/*** morphology and microstructural characteristics of the modified electrodes were revealed by scanning electron microscopy(SEM)for each step of *** composite GO-AuNPs can provide high surface area and enhance electroconductivity of the *** addition,the presence of negatively charged P3ABA notably improved PQ adsorption and electron transfer rate,which stimulate redox reaction on the modified electrode,thus improving the sensitivity of PQ *** SPCE/GOAuNPs/P3ABA offered a wide linear range of PQ determination(10^(−9)-10^(−4) mol/L)and low limit of detection(LOD)of 0.45×10^(−9) mol/L or 0.116μg/L,which is far below international safety *** modified electrode showed minimum interference effect with percent recovery ranging from 96.5%to 116.1%after addition of other herbicides,pesticides,metal ions,and *** stability of the SPCE/GO-AuNPs/P3ABA was evaluated,and the results indicated negligible changes in the detection signal over 9 ***,this modified electrode was successfully implemented for PQ analysis in both natural and tapped water with high accuracy.

关键词： Paraquat Electrochemical sensor Graphene oxide(GO) Gold nanoparticle(AuNP) Poly(3-aminobenzoic acid)(P3ABA)

Structural engineering of high-entropy alloys for advanced electrocatalytic reactions

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Tungsten 2025年第1期7卷 1-31页

作者： Qiao Xie Ying-Jie Yu Hai-Jun Zhang Ya-Ping Deng Wen Lei The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology department of Chemical Engineering Waterloo Institute for Sustainable Energy Waterloo Institute for Nanotechnology University of Waterloo

High-entropy alloys(HEAs) have emerged as promising candidates to replace traditional precious metal catalysts,owing to their unique chemical and physical *** review commences by revisiting the fundamental concepts of HEAs,including their synthesis methods and structural control strategies in *** underscores the critical role of meticulously manipulating both macroscopic and microscopic structures of the HEAs to optimize their catalytic performance.A deep understanding of the structure-activity relationship in HEAs across various configurations is pivotal in developing more effective *** review methodically encapsulates the research progress of structural control strategies for HEAs in achieving efficient energy conversion,with the aim of gaining a better understanding of the relationship between structure and *** review concludes by summarizing the current achievements and challenges,and suggestions for potential future directions of HEAs in the fields of energy conversion and environmental purification.

关键词： Electrocatalytic Energy conversion High-entropy alloys Structural modulation

Axial coordinated iron-nitrogen-carbon as efficient electrocatalysts for hydrogen evolution and oxygen redox reactions

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Chinese Chemical Letters 2025年第1期36卷 637-642页

作者： Yanan Zhou Li Sheng Lanlan Chen Wenhua Zhang Jinlong Yang School of material science and Chemical Engineering Institute of Mass SpectrometryNingbo UniversityNingbo 315211China department of Chemical Physics University of Science and Technology of ChinaHefei 230026China department of material science and Engineering University of Science and Technology of ChinaHefei 230026China Hefei National Laboratory for Physical sciences at the Microscale CAS Key Laboratory of Materials for Energy Conversion and Synergetic Innovation Centre of Quantum Information and Quantum PhysicsUniversity of Science and Technology of ChinaHefei 230026China

Designing highly active electrocatalysts for the hydrogen evolution reaction(HER)and oxygen evolution and reduction reactions(OER and ORR)is pivotal to renewable energy ***,based on density functional theory(DFT)calculations,we systematically investigate the catalytic activity of iron-nitrogen-carbon based covalent organic frameworks(COF)monolayers with axially coordinated ligands(denotes as Fe N_(4)-X@COF,X refers to axial ligand,X=-SCN,-I,-H,-SH,-NO_(2),-Br,-ClO,-Cl,-HCO_(3),-NO,-ClO_(2),-OH,-CN and-F).The calculated results demonstrate that all the catalysts possess good thermodynamic and electrochemical *** different ligands axially ligated to the Fe active center could induce changes in the charge of the Fe center,which further regulates the interaction strength between intermediates and catalysts that governs the catalytic ***,FeN_(4)-SH@COF and Fe N_(4)-OH@COF are efficient bifunctional catalysts for HER and OER,FeN_(4)-OH@COF and FeN_(4)-I@COF are promising bifunctional catalysts for OER and *** findings not only reveal promising bifunctional HER/OER and OER/ORR catalysts but also provide theoretical guidance for designing optimum ironnitrogen-carbon based catalysts.

关键词： Axial coordinated ligands DFT calculation Hydrogen evolution reaction Oxygen evolution reaction Oxygen reduction reaction

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Investigation of oxidative potential of fresh and O_(3)-aging PM_(2.5)from various emission sources across urban and rural regions

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Journal of Environmental sciences 2025年第5期151卷 608-615页

作者： Shuaishuai Ma Dongsheng Cheng Yingying Tang Younuo Fan Qiong Li Chengxiang He Zhiqing Zhao Tianyou Xu College of Chemical and material Engineering Quzhou UniversityQuzhou 324000China Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention Department of Environmental Science&EngineeringFudan UniversityShanghai 200433China

Inhalation of atmospheric PM_(2.5)can induce the generation of excessive reactive oxygen species(ROS)in human alveoli,triggering local and systemic inflammation,which can directly or indirectly result in respiratory and cardiovascular *** this study,we assessed the oxidative potential(OP)of fresh and O_(3)-aged PM_(2.5)particles from various urban and rural emission sources using the dithiothreitol(DTT)*** results revealed variations in the OP of fresh PM_(2.5)among different emission sources,with biomass burning sources exhibiting the highest OP,followed by industrial areas,vehicular emissions,cooking emissions,and suburban areas,***-soluble organics and transition metals might potentially exert significant influence on particle OP.O_(3)aging notably decreased the OP of PM_(2.5)particles,possibly due to the oxidation of highly DTT-active components into low redox-active small ***,the evolution of OP in different PM_(2.5)components,including methanol-soluble and insoluble fractions,exhibited distinct responses to O_(3)aging for source-oriented PM_(2.5).Additionally,differences in chemical composition between fresh and aged PM_(2.5)were further elucidated through measurements of component-dependent hygroscopic behaviors and phase *** study systematically delineates variances in the toxic potential of fresh and O_(3)-aged PM_(2.5)from various anthropogenic *** findings highlight the intrinsic compositional dependence of particle OP and provide essential insights for assessing the health effects of source-oriented PM_(2.5),as well as for formulating human health protection policies.

关键词： Atmospheric PM_(2.5) Oxidative potential Emission sources DTT assay O_(3)aging

Introducing strong metal–oxygen bonds to suppress the Jahn-Teller effect and enhance the structural stability of Ni/Co-free Mn-based layered oxide cathodes for potassium-ion batteries

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Journal of Energy Chemistry 2025年第2期101卷 713-722页

作者： Yicheng Lin Shaohua Luo Pengyu Li Jun Cong Wei Zhao Lixiong Qian Qi Sun Shengxue Yan School of materials science and Engineering Northeastern University School of Resources and materials Northeastern University at Qinhuangdao Key Laboratory of Dielectric and Electrolyte Functional material Hebei Province

Mn-based layered oxides（KMO） have emerged as one of the promising low-cost cathodes for potassiumion batteries（PIBs）.However,due to the multiple-phase transitions and the distortion in the MnO6structure induced by the Jahn-Teller（JT） effect associated with Mn-ion,the cathode exhibits poor structural ***,we propose a strategy to enhance structural stability by introducing robust metal-oxygen（M-O） bonds,which can realize the pinning effect to constrain the distortion in the transition metal（TM） ***,all the elements employed have exceptionally high crustal *** a proof of concept,the designed K0.5Mn0.9Mg0.025Ti0.025Al0.05O2cathode exhibited a discharge capacity of approximately 100 mA h g-1at 20 mA g-1with 79% capacity retention over 50 cycles,and 73% capacity retention over 200 cycles at 200 mA g-1,showcased much better battery performance than the designed cathode with less robust M-O *** properties of the formed M-O bonds were investigated using theoretical *** enhanced dynamics,mitigated JT effect,and improved structural stability were elucidated through the in-situ X-ray diffractometer（XRD）,in-situ electrochemical impedance spectroscopy（EIS）(and distribution of relaxation times（DRT） method),and ex-situ X-ray absorption fine structure（XAFS） *** study holds substantial reference value for the future design of costeffective Mn-based layered cathodes for PIBs.

关键词： Jahn-Teller effect Layered oxide cathodes Low-cost Potassium-ion batteries Robust M–O bonds

Effect of graphene addition on activation and kinetic properties of La-Mg-Ni-based hydrogen storage alloys

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Journal of Iron and Steel Research International 2025年第1期32卷 227-238页

作者： Dian-chen Feng Chun-ling Zheng Zhi-yuan Zhao Dong-sheng Zhou Hui-ping Ren Yang-huan Zhang School of materials and Metallurgy Inner Mongolia University of Science and TechnologyBaotou014010Inner MongoliaChina Collaborative Innovation Center of Integrated Exploitation of Bayan Obo Multi-Metal Resources Inner Mongolia University of Science and TechnologyBaotou014010Inner MongoliaChina department of Functional material Research China Iron and Steel Research Institute GroupBeijing100081China

The La_(1.7)Pr_(0.3)Mg_(16)Ni hydrogen storage alloy was prepared by medium-frequency induction melting,and then the composite hydrogen storage alloy powder of La_(1.7)Pr_(0.3)Mg_(16)Ni+x wt.%(x=0,2,4,and 6)graphene was prepared by ball milling for 10 *** effect of the addition of graphene on the activation and hydrogen de/absorption properties of La_(1.7)Pr_(0.3)Mg_(16)Ni alloy was *** result demonstrated that these composite alloys were composed of La_(2)Mg_(17),La_(2)Ni_(3),and Mg_(2)Ni *** saturated hydrogen absorption,it was composed of LaH_(3),Mg_(2)NiH_(4),and MgH_(2)phases,while during the dehydrogenation process,it was composed of LaH_(3),Mg,and Mg_(2)Ni *** addition of graphene can help get a more homogeneous granule after ball milling and accelerate the first activation of dehydrogenation/hydrogen *** hydrogen release activation energy of the alloys first decreases and then increases as the graphene content increases from x=0 wt.%to x=6 wt.%.The minimum activation energy of the composite hydrogen storage alloy is 51.22 kJ mol^(-1) when x=4 wt.%.

关键词： La-Mg-Ni alloy Graphene Mechanical ball milling Activation property Dynamic performance

Bioinspired Ultrasensitive Flexible Strain Sensors for Real‑Time Wireless Detection of Liquid Leakage

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Nano-Micro Letters 2025年第3期17卷 310-327页

作者： Weilong Zhou Yu Du Yingying Chen Congyuan Zhang Xiaowei Ning Heng Xie Ting Wu Jinlian Hu Jinping Qu Key Laboratory of material Chemistry for Energy Conversion and Storage Ministry of EducationHubei Key Laboratory of Material Chemistry and Service Failure and Hubei Engineering Research Center for Biomaterials and Medical Protective MaterialsSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China School of materials science and Engineering Wuhan Institute of TechnologyWuhan 430205People’s Republic of China department of Biomedical Engineering City University of Hong KongHong KongSAR 999077People’s Republic of China

Liquid leakage of pipeline networks not only results in considerableresource wastage but also leads to environmental pollution and ecological *** response to this global issue, a bioinspired superhydrophobic thermoplastic polyurethane/carbon nanotubes/graphene nanosheets flexible strain sensor (TCGS) hasbeen developed using a combination of micro-extrusion compression molding andsurface modification for real-time wireless detection of liquid leakage. The TCGSutilizes the synergistic effects of Archimedean spiral crack arrays and micropores,which are inspired by the remarkable sensory capabilities of scorpions. This designachieves a sensitivity of 218.13 at a strain of 2%, which is an increase of 4300%. Additionally, it demonstrates exceptional durability bywithstanding over 5000 usage cycles. The robust superhydrophobicity of the TCGS significantly enhances sensitivity and stability indetecting small-scale liquid leakage, enabling precise monitoring of liquid leakage across a wide range of sizes, velocities, and compositionswhile issuing prompt alerts. This provides critical early warnings for both industrial pipelines and potential liquid leakage scenariosin everyday life. The development and utilization of bioinspired ultrasensitive flexible strain sensors offer an innovative and effectivesolution for the early wireless detection of liquid leakage.

关键词： Thermoplastic polyurethane Bioinspired Cracks Liquid leakage Flexible strain sensor

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A self-powered cathodic molecular imprinting ultrasensitive photoelectrochemical tetracycline sensor via ZnO/C photoanode signal amplification

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Chinese Chemical Letters 2025年第1期36卷 539-544页

作者： Qinghong Pan Huafang Zhang Qiaoling Liu Donghong Huang Da-Peng Yang Tianjia Jiang Shuyang Sun Xiangrong Chen Key Laboratory of Chemical materials and Green nanotechnology College of Chemical Engineering and Materials ScienceQuanzhou Normal UniversityQuanzhou 362000China department of Neurosurgery the Second Affiliated Hospital of Fujian Medical UniversityQuanzhou 362000China School of Rehabilitation science and Engineering University of Health and Rehabilitation SciencesQingdao 266024China College of Food Engineering Ludong UniversityYantai 264025China

Quantitative determination of tetracycline(TC)in environment and foods is of great importance,as excessive residues might have negative effects on human health and environmental ***,a selfpowered molecularly imprinted photoelectrochemical(PEC)sensor based on the Zn O/C photoanode and the Fe-doped CuBi_(2)O_(4)(CBFO)photocathode is developed for the sensitive detection of *** photocathodic current can be amplified by the efficient electron transfer caused by the Fermi energy level gap between the photoanode and ***,molecularly imprinted polymers(MIPs)at photocathode can selectivity identify the TC templates and thus improve the *** the optimal conditions,the sensor has a linear range of 10^(-2)-1.0×10^(5) nmol/L,and a limit of detection(LOD)of 0.007 nmol/L(S/N=3).More crucially,the milk sample detection is carried out using the as-prepared sensor,and the outcome is *** research gives us a novel sensing platform for quick and accurate antibiotic(like TC)in environment and food monitoring.

关键词： Self-powered photoelectrochemical sensor Molecularly imprinted polymer Fe-doped CuBi_(2)O_(4) Tetracycline detection

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The effect of adsorbent textural and functional properties on model naphthenic acid adsorption

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Journal of Environmental sciences 2025年第2期148卷 27-37页

作者： Tyler M.Roy Elmira Nazari Oliver K.L.Strong Paul R.Pede Andrew J.Vreugdenhil material science Department of ChemistryTrent University1600 West BankPeterboroughOntario K9L 0G2Canada Carbonix 690 Mountain RdSuite 200Fort William First NationOntario P7J 1G8Canada

Naphthenic acids,NAs,are a major contaminant of concern and a focus of much research around remediation of oil sand process affected waters,*** activated carbon adsorbents are an attractive option given their low cost of fabrication and implementation.A deeper evaluation of the effect NA structural differences have on uptake affinity is *** we provide an in-depth exploration of NA adsorption including many more model NA species than have been assessed previously with evaluation of adsorption kinetics and isotherms at the relevant alkaline pH of OSPW using several different carbon adsorbents with pH buffering to simulate the behaviour of real *** for the NA varied considerably regardless of the activated carbon used,ranging from 350 mg/g to near zero highlighting recalcitrant *** equilibrium data was explored to identify structural features of these species and key physiochemical properties that influence *** found that certainNAwill be resistant to adsorptionwhen hydrophobic adsorbents are *** isotherm modelling helped explore interactions occurring at the interface between NA and adsorbent *** identified the importance of NA hydrophobicity for activated carbon *** is also presented that indicates favorable hydrogen bonding between certain NA and surface site hydroxyl groups,demonstrating the importance of adsorbent surface functionality for NA *** research highlights the challenges associated with removing NAs from OSPW through adsorption and also identifies howadsorbent surface chemistry modification can be used to increase the removal efficiency of recalcitrant NA species.

关键词： Adsorption Activated carbon Model naphthenic acids Isotherm modelling