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Structural tailoring of poly(quaternary ammonium) thin-film composite membranes for efficient lithium recovery from concentrated salt-lake brine

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Journal of Membrane science 2025年 733卷

作者： Hansoo Kim Juyeon Choi Hyunjung Kim Sungkwon Jeon Jung-Hyun Lee Department of Chemical and Biological Engineering Korea University 145 Anam-ro Seongbuk-gu Seoul 02841 Republic of Korea Department of Earth Resources and Environmental Engineering Hanyang University 222 Wangsimni-ro Seongdong-gu Seoul 04763 Republic of Korea Department of Polymer Science and Engineering Kumoh National Institute of Technology 61 Daehak-ro Gumi Gyeongbuk 39177 Republic of Korea

The application of conventional polyamide nanofiltration (NF) membranes to lithium (Li) recovery from high-salinity salt-lake brine is challenging, despite their high separation efficiency, owing to their intrinsic negatively charged nature. Herein, we developed highly Li-selective, positively charged poly (quaternary ammonium) (PQA) thin-film composite NF membranes via an interfacial Menshutkin reaction by varying the structure of the linear tertiary amine monomers used. Less bulky tertiary amine monomers with shorter alkyl chain spacers and/or fewer amine groups produced a denser, more Li-selective PQA membrane with a strongly positive surface charge. Hence, the PQA membrane fabricated with the least bulky tertiary amine monomer exhibited the highest magnesium ion (Mg 2+ ) rejection (∼99.4 %) and Li + /Mg 2+ selectivity (∼90) under high-salinity mixed-salt conditions (10,000 ppm, Mg 2+ :Li + mass ratio = 20:1). This performance considerably exceeded that of other reported Li-selective NF membranes, underscoring the potential of the PQA membrane for efficient Li recovery from concentrated salt-lake brine. The superior Li selectivity of the PQA membrane was attributed to its strongly positive surface charge and moderate molecular density. Our study provides a versatile means to fabricate advanced membranes for resource recovery or hazardous matter removal and elucidates their structure−property−performance relationship.

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Residual Antibiotics in Livestock Excreta Regulate Microalgal Growth and Bioenergy Conversion

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SSRN 2022年

作者： Kim, Hee-Jun Jeong, Sangjun Kim, Hyun-Woo Department of Environmental Engineering Division of Civil Environmental Mineral Resource and Energy Engineering Soil Environment Research Center Jeonbuk National University 567 Baekje-daero Deokjin-gu Jeonju54896 Korea Republic of Department of Polymer-Nano Science and Technology Jeonbuk National University 567 Baekje-daero Deokjin-gu Jeonju54896 Korea Republic of Water environmental research center Jeonbuk National University 109 Ballyong-ro Deokjin-gu Jeollabuk-do Jeonju-si Korea Republic of Jeonbuk National University 567 Baekje-daero Deokjin-gu Jeonju54896 Korea Republic of

Residual antibiotics in livestock excreta (LE) have been regarded as a potential threat to the ecosystem. This study investigates how the strength of antibiotics impacts the metabolic response of microalgae and the overall biodiesel yield of the harvested biomass grown from LE. Results demonstrate that increasing amoxicillin concentration as a residual antibiotic agent suppresses the microalgal growth rate up to 61% resulting in slow photosynthesis despite its absorption and degradation by microalgae. The analytical result of fatty acids methyl ester (FAME) demonstrates that using amoxicillin significantly reduces C16:0 content by over 96%. It can be attributed to the lipid synthesis retardation of microalgae because amoxicillin having a similar molecular structure to FAME may play a role of inhibitor. Overall, these results evidence that antibiotics abuse for livestock may harm the eco-friendly waste-to-bioenergy strategy using microalgae. © 2022, The Authors. All rights reserved.

关键词： Microalgae

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Oxygen vacancies-rich cobalt-doped NiMoO4 nanosheets for high energy density and stable aqueous Ni-Zn battery

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science China Materials 2020年第7期63卷 1205-1215页

作者： Yuenian Shen Ke Zhang Fang Yang Zhihao Li Zhe Cui Rujia Zou Qian Liu Junqing Hu Kaibing Xu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Research Center for Analysis and Measurement Donghua UniversityShanghai 201620China Department of Applied Physics Donghua UniversityShanghai 201620China College of Mechanical and Automotive Engineering Shanghai University of Engineering ScienceShanghai 201620China College of Health Science and Environmental Engineering Shenzhen Technology UniversityShenzhen 518118China

The enhancement of energy density and cycling stability is in urgent need for the widespread applications of aqueous rechargeable Ni-Zn ***,a facile strategy has been employed to construct hierarchical Co-doped NiMoO4nanosheets as the cathode for high-performance Ni-Zn *** from the merits of substantially improved electrical conductivity and increased concentration of oxygen vacancies,the NiMoO4with 15%cobalt doping(denoted as CNMO-15)displays the best capacity of 361.4 m A h g-1at a current density of 3 A g-1and excellent cycle ***,the assembled CNMO-15//Zn battery delivers a satisfactory specific capacity of 270.9 mA h g-1at 2 A g-1and a remarkable energy density of 474.1 W h kg-1at 3.5 kW kg-1,together with a maximum power density of 10.3 kW kg-1achieved at 118.8 W h ***,there is no capacity decay with a 119.8%retention observed after 5000 cycles,demonstrating its outstanding long *** work might provide valuable inspirations for the fabrication of high-performance Ni-Zn batteries with superior energy density and impressive stability.

关键词： NiMoO4 nanosheets oxygen vacancies Ni-Zn batteries energy density cycle stability

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polymer Recycling in Additive Manufacturing: an Opportunity for the Circular Economy

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Materials Circular Economy 2020年第1期2卷 1-11页

作者： Shanmugam, Vigneshwaran Das, Oisik Neisiany, Rasoul Esmaeely Babu, Karthik Singh, Sunpreet Hedenqvist, Mikael S. Berto, Filippo Ramakrishna, Seeram Faculty of Mechanical Engineering Kalasalingam Academy of Research and Education Krishnankoil India Structural and Fire Engineering Division Department of Civil Environmental and Natural Resources Engineering Luleå University of Technology Luleå Sweden Department of Materials and Polymer Engineering Faculty of Engineering Hakim Sabzevari University Sabzevar Iran Center for Polymer Composites and Natural Fiber Research Madurai India Department of Mechanical Engineering National University of Singapore Singapore Singapore Department of Fibre and Polymer Technology School of Engineering Sciences in Chemistry Biotechnology and Health KTH Royal Institute of Technology Stockholm Sweden Department of Mechanical and Industrial Engineering Norwegian University of Science and Technology NTNU Trondheim Norway

This article is a short review of the circular material economy and recycling in the additive manufacturing (AM) of polymers. In the recent years, there has been a surge regarding the production of numerous products through AM of various polymers. AM can provide an opportunity for a better manufacturing solution to facilitate productivity and sustainability in the circular economy. AM with a circular economy approach can provide adequate incentives for the recycling and reuse of polymers. It is therefore crucial to analyse the possibilities of recycling and reuse of polymers in AM. Some ongoing research has attempted to remanufacture polymers from recycled materials. This is necessary because polymer waste is a critical threat to the environment making an effective end-of-life treatment imperative. This review aims to provide a holistic view of recycling and reuse of AM materials. Studies investigating remanufactured feedstock materials and polymers as well as composites have been reviewed. The findings point to the fact that there are significant opportunities for recyclable polymers to be used in the development of AM products.

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Nature-derived polymers and their composites for energy depository applications in batteries and supercapacitors: Advances, prospects and sustainability

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Journal of Energy Storage 2023年 66卷

作者： Ahmed, Shakeel Sharma, Priynka Bairagi, Satyaranjan Rumjit, Nelson Pynadathu Garg, Shivani Ali, Akbar Lai, Chin Wei Mousavi, Seyyed Mojtaba Hashemi, Seyyed Alireza Hussain, Chaudhary Mustansar Department of Chemistry Government Degree College Mendhar Jammu and Kashmir 185211 India Higher Education Department Government of Jammu and Kashmir Jammu180001 India Chandigarh University Punjab Mohali140413 India Department of Physics RIMT University Punjab Mandi Gobindgarh147301 India Materials and Manufacturing Research Group James Watt School of Engineering University of Glasgow GlasgowG128QQ United Kingdom Level 3 Block A Kuala Lumpur50603 Malaysia Institute of Environmental Studies Kurukshetra University Haryana Kurukshetra136119 India Department of Chemistry University of Ladakh Kargil Campus Ladakh Kargil194105 India Department of Chemical Engineering National Taiwan University of Science and Technology Taipei Taiwan Nanomaterials and Polymer Nanocomposites Laboratory School of Engineering University of British Columbia KelownaBCV1V 1V7 Canada Department of Chemistry and Environmental Science New Jersey Institute of Technology NewarkNJ07102 United States

Energy depository devices control energy utilization in diverse applications like transportation and electronic devices. Materials like batteries and supercapacitors empower and control the efficiency and life span of the devices. Therefore, the selection of materials for batteries and supercapacitors is an important requirement to enhance their energy storage capability. Even though conventional materials displayed good performance characteristics, they faced significant environmental issues regarding processing, synthesis, usage, and disposal management. The waste management of most conventional materials is a significant concern due to harmful environmental effects. Recently, there has been rising research interest in developing biobased polymers to overcome the issues created by conventional materials, and this has led to a switch towards eco-friendly materials and gadgets. Biopolymer fabrication is either chemically/fermentation sourced from biological resources or genetically altered microorganisms. Biopolymer composites with exceptional dielectric properties displayed immense potential as an energy repository dielectric layer in high-performing batteries and supercapacitor applications. This review aims to comprehensively review various biopolymer development techniques, novel advancements, and additive roles in biobased polymer composites for energy repository applications. Additionally, we discuss the future outlook of biobased polymer composites in solving environmental issues and energy depository applications. © 2023 Elsevier Ltd

关键词： Energy storage

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Electrolyte-philic and thermal-resistant polyimide separator enhances the performance of flexible silicon/carbon nanofibers for lithium-ion batteries

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Journal of Energy Storage 2022年 54卷

作者： Liu, Xin Zhao, Jinfu Wang, Jie Le, Zaiyuan Nie, Ping Wang, Hairui Xu, Tianhao Xu, Guiyin Chang, Limin Zhu, Meifang Key Laboratory of Preparation and Applications of Environmental Friendly Material of the Ministry of Education College of Chemistry Jilin Normal University Changchun130103 China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai201620 China Department of Chemical and Biomolecular Engineering University of California Los AngelesCA90095 United States Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Jiangsu Key Lab of Biomass Based Green Fuels and Chemicals College of Chemical Engineering Nanjing Forestry University Nanjing210037 China

It is still challenging to construct a stable silicon/electrolyte interface to inhibit the mechanical fracture of Si particles and repeated formation of a solid electrolyte interface layer. The separator is a vital component in lithium-ion batteries, however, commercial polyolefin separators suffer from low thermal stability and poor electrolyte wettability. Herein, a polyimide separator is reported to achieve a stable interface of silicon anode due to its high polarity, outstanding electrolyte absorption, and reduction of side reactions. The binder-free self-standing silicon carbon (Si@C) nanofiber composite is designed by a facile electrospinning method and subsequent pyrolysis, where the nanosized Si particles are confined in polyimide-derived carbon nanofibers to form a bamboo-like morphology with good flexibility. Such flexible nanofiber film with cross-linked 3D network structure is important to increase energy density of batteries, mitigate the growth of new interfaces, and avoid the known issues of side reaction during the electrochemical operation. Encouragingly, the 40 %-Si@C composite illustrates an improved lithium storage property with high reversible capacity of 1819.7 mAh g−1 at 0.2 A g−1, excellent rate capability and cycling stability, demonstrating superiority of the film electrode and polyimide separator. This work provides new insights for stabilizing the interface electrochemistry of alloy anodes for the development of next-generation flexible energy storage devices. © 2022 Elsevier Ltd

关键词： Lithium-ion batteries

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Adsorptive Ar Separation from Air on Self-Bound Ag-Ets-10 Granules

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SSRN 2024年

作者： Gueibe, Christophe Rutten, Jos Camps, Johan Riedmann, Robin Moyaux, Dominique Schroeyers, Wouter Gryglewicz, Grażyna Kuznicki, Steven Schreurs, Sonja Centre for Environmental Sciences Boeretang 200 Mol2400 Belgium CMK NuTeC Agoralaan Building H Diepenbeek3590 Belgium Vienna International Centre PO Box 1200 Vienna1400 Austria Avenue de l’Espérance 1 Fleurus6220 Belgium Wroclaw University of Science and Technology Department of Process Engineering and Technology of Polymer and Carbon Materials ul. Gdańska 7/9 Wroclaw50-344 Poland Extraordinary Adsorbents Inc 86 Greystone Crescent Sherwood ParkABT8A 3E6 Canada University of Alberta Department of Chemical and Materials Engineering EdmontonABT6G 2R3 Canada

Efficient Ar separation, from air and subsoil gas, on a single adsorbent, operating at or near Room Temperature (RT), could provide an energy-efficient alternative for the detection of 37Ar from underground nuclear weapon tests. Ag-ETS-10, a silver-exchanged titanosilicate, was reported to be very efficient to separate O2 from air due to its high N2/O2 and Ar/O2 selectivity at RT. The Ar separation from air on Ag-ETS-10 has never been investigated. In this work, self-bound Ag-ETS-10 was investigated for this purpose. It has a higher microporosity by 20 to 30%, depending on the probing molecule, than silica-bound Ag-ETS-10. This increase is translated in 25% higher Ar in He adsorption capacities, yielding a heat of adsorption of 19.8 kJ mol-1. Air breakthrough measurements at RT demonstrate that an almost N2-free mixture enriched in Ar, with 6.4% Ar and 93.3% O2, can be recovered with a 10% Ar yield. Further Ar enrichment of the resulting Ar/O2 mixture is possible but becomes more difficult in Ar-rich mixtures. The Ar separation from air and subsoil gas is influenced by both the O2 and Ar concentration, whereas it is not influenced by a relative humidity of 50% in the inlet gas stream. A vacuum pressure swing adsorption-based separation was investigated and yielded a maximum Ar concentration, in an almost N2-free mixture, of 5.6% for a 10% Ar yield. Lastly, the Ar concentration can be increased to 8.2%, together with 89.7% O2, by lowering the temperature during the air adsorption from RT to 248 K. © 2024, The Authors. All rights reserved.

关键词： Argon

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Enhanced properties of PBAT by incorporating CNC

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AIP Conference Proceedings 2023年第1期2607卷

作者： Emre Vatansever Dogan Arslan Deniz Sema Sarul Ali Durmus Mohammadreza Nofar Polymer Science and Technology Program Istanbul Technical University Maslak Istanbul 34469 Turkey Metallurgical & Materials Engineering Department Faculty of Chemical and Metallurgical Engineering Istanbul Technical University Maslak Istanbul 34469 Turkey Department of Chemical Engineering Faculty of Engineering Istanbul University-Cerrahpasa Avcılar Istanbul 34320 Turkey

In this study, cellulose nanocrystal (CNC) dispersion within polybutylene adipate terephthalate (PBAT) was investigated. PBAT/CNC nanocomposites with various CNC contents were prepared through solution casting as well as dilution of a solution casted masterbatch using a twin screw extruder. The efficiency of two different preparation approaches on CNC dispersion was assessed by transmission electron microscopic and rheological analysis. It was found that solution casted PBAT/CNC nanocomposites had a much better CNC dispersion compared to that of their melt processed counterparts. This was while the diluted melt processed cases also revealed a good level of CNC dispersion. As a result, CNC was able to form a percolation network within PBAT at CNC contents of around 2 and 4 wt% in the two approaches, respectively.

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Applications of nanogenerators for biomedical engineering and healthcare systems

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InfoMat 2022年第2期4卷 53-109页

作者： Wanli Wang Jinbo Pang Jie Su Fujiang Li Qiang Li Xiaoxiong Wang Jingang Wang Bergoi Ibarlucea Xiaoyan Liu Yufen Li Weijia Zhou Kai Wang Qingfang Han Lei Liu Ruohan Zang Mark HRümmeli Yang Li Hong Liu Han Hu Gianaurelio Cuniberti College of Electrical Engineering Qingdao UniversityQingdaoChina Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong Institute for Advanced Interdisciplinary Research(iAIR)University of JinanJinanChina College of Electronic Information Qingdao UniversityQingdaoChina Department of Pediatric Surgery The Affiliated Hospital of Qingdao UniversityQingdaoChina College of Physics Qingdao UniversityQingdaoChina Institute for Materials Science and Max Bergmann Center of Biomaterials Technische Universität DresdenDresdenGermany Center for Advancing Electronics Dresden Technische Universität DresdenDresdenGermany College of Biological Science and Technology University of JinanJinanChina School of Chemistry and Chemical Engineering University of JinanShandongJinanChina College of Energy Soochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhouChina Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province Soochow UniversitySuzhouChina Centre of Polymer and Carbon Materials Polish Academy of SciencesZabrzePoland Institute for Complex Materials IFW DresdenDresdenGermany Institute of Environmental Technology VŠB-Technical University of OstravaOstravaCzech Republic School of Information Science and Engineering University of JinanJinanChina Shandong Provincial Key Laboratory of Network Based Intelligent Computing University of JinanJinanChina State Key Laboratory of Crystal Materials Center of Bio&Micro/Nano Functional MaterialsShandong UniversityJinanChina College of Chemical Engineering China University of Petroleum(East China)QingdaoChina Dresden Center for Computational Materials Science Technische Universität DresdenDresdenGermany The Dresden Center for Intelligent Materials(DCIM) Technische Universität DresdenDresdenGermany

The dream of human beings for long living has stimulated the rapid development of biomedical and healthcare ***,conventional biomedical and healthcare devices have shortcomings such as short service life,large equipment size,and high potential safety ***,the power supply for conventional implantable device remains predominantly *** emerging nanogenerators,which harvest micro/nanomechanical energy and thermal energy from human beings and convert into electrical energy,provide an ideal solution for self-powering of biomedical *** combination of nanogenerators and biomedicine has been accelerating the development of self-powered biomedical *** article first introduces the operating principle of nanogenerators and then reviews the progress of nanogenerators in biomedical applications,including power supply,smart sensing,and effective ***,the microbial disinfection and biodegradation performances of nanogenerators have been ***,the protection devices have been discussed such as face mask with air filtering function together with real-time monitoring of human health from the respiration and heat ***,the nanogenerator devices have been categorized by the types of mechanical energy from human beings,such as the body movement,tissue and organ activities,energy from chemical reactions,and gravitational potential ***,the challenges and future opportunities in the applications of nanogenerators are delivered in the conclusive remarks.

关键词： biomedical engineering healthcare implantable devices nanogenerators self-powered devices sensors

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Synthesis, properties, and applications of graphene oxide/reduced graphene oxide and their nanocomposites

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Nano Materials science 2019年第1期1卷 31-47页

作者： Andrew T. Smith Anna Marie LaChance Songshan Zeng Bin Liu Luyi Sun Polymer Program Institute of Materials Science University of Connecticut Storrs Connecticut 06269 United States Department of Chemical and Biomolecular Engineering University of Connecticut Storrs Connecticut 06269 United States of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China Department of Biomedical Engineering University of Connecticut Storrs Connecticut 06269 United States

Thanks to their remarkable mechanical, electrical, thermal, and barrier properties, graphene-based nanocomposites have been a hot area of research in the past decade. Because of their simple top-down synthesis, graphene oxide (GO) and reduced graphene oxide (rGO) have opened new possibilities for gas barrier, membrane separation, and stimuli-response characteristics in nanocomposites. Herein, we review the synthesis techniques most commonly used to produce these graphene derivatives, discuss how synthesis affects their key material properties, and highlight some examples of nanocomposites with unique and impressive properties. We specifically highlight their performances in separation applications, stimuli-responsive materials, anti-corrosion coatings, and energy storage. Finally, we discuss the outlook and remaining challenges in the field of practical industrial-scale production and use of graphene-derivative-based polymer nanocomposites.

关键词： Graphene oxide Reduced graphene oxide Graphene quantum dots polymer Nanocomposites Synthesis Properties of graphene and graphene oxide Applications

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