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Hydrophobic PBAT/SiO2 composite films for food packaging

Materials Today Communications 2025年 46卷

作者： Gao, Jian Zhang, Jie Guo, Honghui Liang, Ziyu Liu, Fuyong Xiao, Kaiyuan Li, Wei Yan, Hong Guo, Ruijie College of Materials Science and Engineering Taiyuan University of Technology Taiyuan030024 China Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education Taiyuan University of Technology Taiyuan030024 China

SiO2 was hydrophobically modified using vinyltrimethoxysilane (VTMO), then modified SiO2 NPs were grafted onto poly(butylene adipate-co-terephthalate) (PBAT) matrix. The modified PBAT composite films were prepared by the solvent evaporation method. FTIR、EDX and XPS analyses were performed to study the chemical structure of the modified films. The hydrophobic surface morphology was studied by SEM. The UV-blocking properties of the films were studied by UV spectroscopy. The effects of the hydrophobically modified SiO2 on the hydrophobicity, mechanical properties, barrier properties, and antibacterial adhesion properties of PBAT were investigated. Results showed that optimum performance was achieved when the SiO2 content was 2 %. The contact angle increased from 66° to 146°. The mechanical properties decreased slightly. The barrier properties were also improved. The inhibition rates for E. coli and S. aureus reached 99 %. All the results proved that the modified PBAT-based films could be used as food packaging films. © 2025

关键词： Composite films

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Graphite-graphene composite as an anode for lithium-ion batteries

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Applied Nanoscience (Switzerland) 2023年第12期13卷 7531-7536页

作者： Strativnov, E. Khovavko, A. Nie, G. Ji, P.-G. Department of Thermochemical Processes and Nanotechnologies of Gas Institute NAS of Ukraine 39 Degtyarivska Str Kiev03113 Ukraine School of Physics and Telecommunication Engineering Yulin Normal University Yulin537006 China School of Materials Science & Engineering and Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology Tianjin University Tianjin300071 China

Graphite-graphene composites (GGC) have been obtained as a result of mechanical treatment of thermoexpanded graphite (TEG). Raman spectroscopy proves the presence of ordered graphene in the GGC. The predominant formation of no more than 5 graphene sheets in the material is concluded from Raman data and SEM micrographs. Electrochemical tests of GGC samples show that in spite of quite low specific discharge capacity (290 mAhg−1), a 20-fold increase in current density (from 50 to 1000 mA g−1) does not lead to a change in the specific capacity upon deintercalation of lithium ions. This feature favorably differs the material studied from existing analogues. A decrease in the specific capacity during cycling of the GGC at a current density of 100 mA g−1 after 95 cycles has not been noted. Exceptionally low decrease in the specific capacity upon the increase of the power load, perfect cycling stability and high Coulombic efficiency supported by electrochemical impedance analysis indicate good prospects of using GGC as a lithium-ion battery anode and for utilizing graphene additives to electrode materials of lithium-ion batteries operating at high discharge currents. © 2023, King Abdulaziz City for science and Technology.

关键词： Lithium-ion batteries

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The achievement of highly efficient bilayer interfacial exciplex OLED through energy transfer from single-layer bulk exciplex

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Dyes and Pigments 2025年 242卷

作者： Zhao, Bo Nan, Zhao Li, Guozheng Ma, Jingshuang Miao, Yanqin Li, Xiao Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education College of Materials Science and Engineering Taiyuan University of Technology Taiyuan030024 China School of Chemical Engineering University of Science and Technology Liaoning Anshan114051 China

Herein, an emitting layer structure of TCTA/PO-T2T: x% mCP with ternary donor/acceptor system was designed to achieve the exciplex emission. As the results of concentration optimization with 30 %, the current efficiency, power efficiency and external quantum efficiency of organic light-emitting diodes based on TCTA/PO-T2T interfacial exciplex were improved to 20.5 cd A−1, 19.5 lm W−1 and 6.7 %, respectively, with the improve ratios of 62.7 %, 62.5 % and 55.8 % compared to reference device without mCP doping. Besides, the emission spectra still presented a single peak with a litter blue shift from 566 nm to 544 nm. And the efficient energy transfer from high energy single-layer bulk exciplex of PO-T2T: mCP to low energy bilayer interfacial exciplex of TCTA/PO-T2T was confirmed as the main reason. Another device based on interfacial exciplex of DMAC-TRZ/PO-T2T was also studied with the same structure and the external quantum efficiency could be improved to 10.0 %. So a novel method was discovered and applied to improve interfacial exciplex efficiency by the energy transfer from bulk exciplex. © 2025 Elsevier Ltd

关键词： Organic light emitting diodes (OLED)

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A review on dissolved organic matter derived from biochar in soil:Characterizations,interaction with pollutants,and transformation

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Journal of Central South University 2025年第1期32卷 122-148页

作者： ZHANG Xiu-xiu NAN Hong-yan LIU Gong-gang SHOW Pau-Loke WANG Chong-qing School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Hunan Province Key Laboratory of Materials Surface and Interface Science and Technology College of Materials Science and EngineeringCentral South University of Forestry and TechnologyChangsha 410004China Department of Chemical Engineering Khalifa UniversityP.O.Box 127788Abu DhabiUnited Arab Emirates

Biochar-derived dissolved organic matter(BCDOM),an essential component of biochar,plays a vital role in regulating the physicochemical and biological properties of soils during biochar ***,the influence of BCDOM on soil organisms has not been clearly ***,this review aims to discuss the factors affecting BCDOM and its interaction with soil substances including organic pollutants,heavy metals,and *** displayed that the quantity of BCDOM ranges from 0.17 to 37.03 mg/g,which was influenced by feedstock,preparation methods of biochar,and extraction *** the decrease in lignin content of feedstocks,carbonization temperature,and acidity of extraction solution,the content of BCDOM *** complexation and adsorption,protein-like components in BCDOM interact with heavy metals,promoting the adsorption and immobilization of heavy metals onto ***,BCDOM enhances the adsorption of organic pollutants by biochar throughπ−πinteractions,hydrogen bonding,and redox *** importantly,BCDOM promotes plant growth by enhancing microbial activities,providing nutrients,and improving soil ***,the transport and fate of BCDOM in soil have not been well studied,and more researches are needed to explore the interaction mechanisms between BCDOM and soil organisms.

关键词： biochar dissolved organic matter heavy metals organic contaminants soil

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Microstructure and mechanical behavior of Mg-5Zn matrix influenced by particle deformation zone

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Journal of Materials science & Technology 2021年第1期60卷 8-20页

作者： Quan-xin Shi Cui-ju Wang Kun-kun Deng Kai-bo Nie Yucheng Wu Wei-min Gan Wei Liang Shanxi Key Laboratory of Advanced Magnesium-Based Materials College of Materials Science and EngineeringTaiyuan University of TechnologyTaiyuan 030024China Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024China GMS at MLZ Helmholtz-Zentrum GeesthachtGarchingGermany

The effect of particle deformation zone(PDZ) on the microstructure and mechanical properties of SiC_(p)/Mg-5Zn composites was ***,the work hardening and so ftening behavior of SiC_(p)/Mg-5Zn composites influenced by PDZ size were analyzed and discussed using neutron diffraction under in-situ tensile *** evolution of FWHM(full width at half maximum) extracted from the diffraction pattern of SiC_(p)/Mg-5Zn composites was used to interpret the modification of dislocation density during in-situ tension,which discovered the effect of dislocation on the work hardening behavior of SiC_(p)/Mg-5Zn *** addition,the tensile stress reduction(△P_i) values during in-situ tension test were calculated to analyze the effect of PDZ size on the softening behavior of SiC_(p)/Mg-5Zn *** results show that the work hardening rate of SiC_(p)/Mg-5Zn composites increased with the enlargement of PDZ size,which was attributed to the grain size of SiC_(p)/Mg-5Zn composites increased with the enlargement of PDZ ***,the stress reduction(△P_i) values increased continuously during in-situ tensile for SiC_(p)/Mg-5Zn composites due to the increased stored energy produced during plastic deformation,which provided a driving force for the softening ***,the effect of grain size on the softening behavior is greater than that of the stored energy,which led to the tensile stress reduction(△P_i) values of P30(d_(PDZ)=30 μm)-SiC_(p)/Mg-5Zn composite were higher than that of P60(d_(PDZ)=60 μm)-SiC_(p)/Mg-5Zn composite when the ε_(ri) were 0.25,0.5,0.75 and 1,respectively.

关键词： PDZ size SiC_(p)/Mg-5Zn composites Work hardening behavior Softening In-situ tensile Neutron diffraction

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Unraveling the role of iron on Ni-Fe alloy nanoparticles during the electrocatalytic ethanol-to-acetate process

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Nano Research 2024年第4期17卷 2328-2336页

作者： Junshan Li Luming Li Xinyu Ma Jun Wang Jun Zhao Yu Zhang Ren He Yaoyue Yang Andreu Cabot Yongfa Zhu Institute for Advanced Study Chengdu University610106 ChengduChina State Key Laboratory of Environmental-Friendly Energy Materials Southwest University of Science and TechnologyMianyang 621010China College of Food and Biological Engineering Chengdu UniversityChengdu 610106China School of Chemistry and Environment Southwest Minzu UniversityChengdu 610041China Hebei Key Laboratory of Photoelectric Control on Surface and Interface College of ScienceHebei University of Science and TechnologyShijiazhuang 050018China Catalonia Institute for Energy Research-IREC Sant Adriàde BesòsBarcelona 08930CataloniaSpain ICREA Pg.Lluís Companys 23Barcelona 08010CataloniaSpain Department of Chemistry Tsinghua UniversityBeijing 100084China

The anodic electrooxidation of ethanol to value-added acetate is an excellent example of replacing the oxygen evolution reaction to promote the cathodic hydrogen evolution reaction and save ***,we present a colloidal strategy to produce Ni-Fe bimetallic alloy nanoparticles(NPs)as efficient electrocatalysts for the electrooxidation of ethanol in alkaline ***-Fe alloy NPs deliver a current density of 100 mA·cm^(-2) in a 1.0 M KOH solution containing 1.0 M ethanol merely at 1.5 V *** hydrogen electrode(RHE),well above the performance of other electrocatalysts in a similar *** continuous 10 h testing at this external potential,this electrode is able to produce an average of 0.49 mmol·cm^(-2)·h^(-1) of acetate with an ethanol-to-acetate Faradaic efficiency of 80%.A series of spectroscopy techniques are used to probe the electrocatalytic process and analyze the ***,density functional theory(DFT)calculations demonstrate that the iron in the alloy NPs significantly enhances the electroconductivity and electron transfer,shifts the rate-limiting step,and lowers the energy barrier during the ethanol-to-acetate reaction pathway.

关键词： electrocatalysis ethanol oxidation reaction alloy nanoparticle acetate biorefinery

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Grain size control in quasi-two-dimensional perovskite thin film via intermediate phase engineering for efficient bound exciton generation

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science China Materials 2024年第12期67卷 3925-3931页

作者： Guohui Li Wenhui Zhao Kai Lin Kefan Zhao Yujing Wang Aohua Niu Rong Weng Kaibo Zheng Yanxia Cui College of Electronic Information and Optical Engineering Key Laboratory of Interface Science and Engineering in Advanced MaterialsKey Lab of Advanced Transducers and Intelligent Control System of Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024China Chemical Physics Division and NanoLund Lund UniversityBox 12422100LundSweden

Quasi-two dimensional(2D)perovskites have emerged as a promising class of materials due to their remarkable photoluminescence efficiency,which stems from their exceptionally high exciton binding *** spatial confinement of excitons within smaller grain sizes could enhance the formation of biexcitons leading to higher radiative recombination ***,the synthesis of high-quality quasi-2D perovskite thin films with controllable grain sizes remains a challenging *** this study,we present a facile method for achieving quasi-2D perovskite thin films with controllable grain sizes ranging from 500 to 900 *** is accomplished by intermediate phase engineering during the film fabrication *** results demonstrate that quasi-2D perovskite films with smaller grain sizes exhibit more efficient bound exciton generation and a reduced stimulated emission threshold down to 15.89µJ cm^(−2).Furthermore,femtosecond transient absorption measurements reveal that the decay time of bound excitons is shorter in quasi-2D perovskites with smaller grain sizes compared to that of those with larger grains at the same pump density,which is 230.5 *** observation suggests a more efficient exciton recombination process in the smaller grain size *** findings would offer a promising approach for the development of efficient bound exciton lasers.

关键词： quasi-2D perovskite intermediate phase engineering bound exciton generation grain size control

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NIR Light-Promoted Whole-Cell Catalysis Based on a Light-Harvesting Blackbody Bioreactor

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Journal of Analysis and Testing 2023年第3期7卷 237-244页

作者： Jinhui Gu Qisi Li Mengting Cao Xiaojia Zhang Xinpei Ding Haiyan Chen Nan Wang Zhijun Zhang Key Laboratory of Surface and Interface Science of Polymer Materials of Zhejiang Province School of Chemistry and Chemical EngineeringZhejiang Sci-Tech UniversityHangzhou 310018China Shaoxing Keqiao Research Institute of Zhejiang Sci-Tech University Shaoxing 312000China Shengzhou Innovation Research Institute of Zhejiang Sci-Tech University Shengzhou 312400China

Whole-cell catalysis,which utilizes enzymes expressed in whole organism(*** and fungi)as the catalyst,is a specific mode of *** with pure enzyme catalysis,the catalysis with whole-cell catalysts is more ***,in the process of whole-cell catalysis,heat treatment is often necessary due to the high optimum temperature of the *** enable efficient industrial application of whole-cell catalysis,an environmental friendly heating approach is highly *** by the light harvest by blackbody materials,in this paper,we introduced a photothermal approach for harnessing the photon energy for enhanced whole-cell catalysis.A blackbody porous sponge(BPS)with excellent photothermal conversion efficiency was prepared as a *** coli expressed with a thermophilic enzyme(β-glucosidase)was utilized as a model whole-cell ***,the photothermal properties of the BPS and lightassisted whole-cell catalysis were systematically investigated,demonstrating promising application prospects.

关键词： Whole-cell catalysis Biocatalysis Photothermal eff ect Near-infrared light response Blackbody materials Porous sponge

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Cisplatin-coordinated copolythiophene for synergistic chemotherapy and sonodynamic therapy of tumor

Smart Molecules

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Smart Molecules 2024年第3期2卷 85-93页

作者： Yuanyu Tang EPang Pan Zhu Qiuxia Tan Shaojing Zhao Benhua Wang Chaoyi Yao Xiangzhi Song Minhuan Lan Hunan Provincial Key Laboratory of Micro&Nano Materials Interface Science College of Chemistry and Chemical EngineeringCentral South UniversityChangshaHunanChina

Sonodynamic therapy(SDT)is a novel cancer treatment type showing the advantages of high tissue penetration ability,non-invasion,low systemic toxicity,and high ***,SDT depends on ultrasound(US)irradiation;once US is turned off,the sonosensitizer will stop producing reactive oxygen species(ROS).Moreover,most sonosensitizers generate oxygen-dependent ROS,that is,singlet oxygen(^(1)O_(2)),significantly limiting the therapeutic effect of SDT in treating deep and hypoxic ***,combining SDT with other treatment modalities is ***,we designed and synthesized a series of cisplatin-coordinated copolythiophenes(CPT-Pts),simultaneously generating^(1)O_(2),superoxide anion,and hydroxyl radicals for synergistic chemotherapy and SDT of *** sonodynamic toxicity and cytotoxicity of CPT-Pts were accurately regulated by tuning the monomer ratio of the *** copolymerization strategy avoids the side effects originating from the high-dose chemotherapy drug while making up for limiting SDT relying on ultrasonic activation,effectively inhibiting cancer cells and tumors.

关键词： chemotherapy cisplatin polythiophene sonodynamic therapy

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Single-Molecule Bioelectronic Sensors with AI-Aided Data Analysis:Convergence and Challenges

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Precision Chemistry 2024年第10期2卷 518-538页

作者： Yuxin Yang Yueqi Li Longhua Tang Jinghong Li State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China Nanhu Brain-Computer Interface Institute HangzhouZhejiang 311100China Center for BioAnalytical Chemistry Hefei National Laboratory of Physical Science at MicroscaleUniversity of Science and Technology of ChinaHefei 230026China Department of Chemistry Center for BioAnalytical ChemistryKey Laboratory of Bioorganic Phosphorus Chemistry&Chemical BiologyTsinghua UniversityBeijing 100084China Beijing Institute of Life Science and Technology Beijing 102206ChinaNew Cornerstone Science InstituteBeijing 102206China

Single-molecule bioelectronic sensing,a groundbreaking domain in biological research,has revolutionized our understanding of molecules by revealing deep insights into fundamental biological *** advent of emergent technologies,such as nanogapped electrodes and nanopores,has greatly enhanced this field,providing exceptional sensitivity,resolution,and integration ***,challenges persist,such as complex data sets with high noise levels and stochastic molecular *** intelligence(AI)has stepped in to address these issues with its powerful data processing *** algorithms effectively extract meaningful features,detect subtle changes,improve signal-to-noise ratios,and uncover hidden patterns in massive *** review explores the synergy between AI and single-molecule bioelectronic sensing,focusing on how AI enhances signal processing and data analysis to boost accuracy and *** also discuss current limitations and future directions for integrating AI,highlighting its potential to advance biological research and technological innovation.

关键词： single-molecule bioelectronic sensing artificial intelligence machine learning signal processing biosensors

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