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Lignocellulose aerogel and amorphous silica nanoparticles from rice husks

Journal of Leather science and engineering 2021年第1期3卷 11-17页

作者： Zichao Wei Andrew T.Smith William R.T.Tait Jingjing Liu Hao Ding Hui Wang Weixing Wang Luyi Sun Polymer Program Institute of Materials ScienceUniversity of ConnecticutStorrsCT 06269USA Department of Chemical&Biomolecular Engineering University of ConnecticutStorrsCT 06269USA College of Materials Science and Engineering South China University of TechnologyGuangzhou 510640GuangdongChina Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510640GuangdongChina Department of Biomedical Engineering University of ConnecticutStorrsCT 06269USA

Rice Husks(RHs)are one of the most abundant sources of biomass in the world due to rice *** and silica are two of the main components of RHs,which allow RHs to be applied in different *** can be partially dissolved in 1-butyl-3-methylimidazolium chloride(BMIMCl),which is a simple way of competing with the traditional extraction methods that suffer from high chemical consumption.A lignocellulose freeze gel is obtained via a cyclic liquid nitrogen freeze-thaw(NFT)***-functional self-assembled lignocellulose aerogel is obtained after CO_(2) supercritical *** on the aerogel’s special properties,two routes are developed for practical *** one hand,the aerogel is coated to exhibit a superhydrophobic property that can be applied as an absorbent for oil *** the other hand,a carbon aerogel is synthesized via a pyrolysis process,resulting in a porous amorphous *** residue after partially dissolving lignocellulose in BMIMCl is further calcined to obtain amorphous silica nanoparticles,achieving a comprehensive application of RHs.

关键词： Rice husks Lignocellulose Carbon aerogel Silica

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Novel Membranes Regenerated from Blends of Cellulose/Gluten Using Ethylenediamine/Potassium Thiocyanate Solvent System

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Journal of Renewable Materials 2019年第1期7卷 41-55页

作者： Yang Yu Ramiz Boy Richard Kotek Fiber and Polymer Science Program College of TextilesNorth Carolina State UniversityRaleighNC 27606USA Department Textile Engineering Çorlu Faculty of EngineeringTekirdağNamık Kemal UniversityTekirdağ59860TURKEY

Current industrial methods for dissolution of cellulose in making regenerated cellulose products are relatively expensive,toxic and dangerous and have environmental problems coming with the hazard chemical *** solve these problems,a novel ethylenediamine and potassium thiocyanate(ED/KSCN)solvent system was developed,that is economical,ecofriendly,and highly *** ED/KSCN solvent system was proven to be a suitable solvent for fabricating cellulose(blended with other polymers)*** this study,gluten was used to develop nonporous membranes with *** method of casting these membranes provided better ones than the former researchers’*** composite membranes’physical and mechanical properties were studied by analysis of morphology,viscosity,crystallinity,thermal behaviors,tensile properties and water absorption of *** showed that membranes are nonporous,uniform,strong,flexible,ecofriendly and *** and physical properties were influenced by the ratio of cellulose/*** blending 40% gluten,the tensile strength of cellulose membrane dropped to 15.89 MPa from 35.11 ***,its elongation at break increased from 35.3% to 57.02% accordingly.

关键词： Cellulose gluten blended film novel ED/KSCN solvent physical and mechanical properties

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High-Performance 3-D fiber Network Composite Electrolyte Enabled with Li-Ion Conducting Nanofibers and Amorphous PEO-Based Cross-Linked polymer for Ambient All-Solid-State Lithium-Metal Batteries

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Advanced fiber Materials 2019年第1期1卷 46-60页

作者： Chaoyi Yan Pei Zhu Hao Jia Jiadeng Zhu R.Kalai Selvan Ya Li Xia Dong Zhuang Du Indunil Angunawela Nianqiang Wu Mahmut Dirican Xiangwu Zhang Fiber and Polymer Science Program Department of Textile EngineeringChemistry and ScienceWilson College of TextilesNorth Carolina State UniversityRaleighNC 27695-8301USA Department of Physics and Organic and Carbon Electronics Lab North Carolina State UniversityRaleighNC 27695-8301USA Department of Mechanical and Aerospace Engineering West Virginia UniversityMorgantownWV 26506USA

Solid electrolytes have gained attention recently for the development of next-generation Li-ion batteries since they can fun-damentally improve the battery stability and *** various types of solid electrolytes,composite solid electrolytes(CSEs)exhibit both high ionic conductivity and excellent interfacial contact with the *** active nanofib-ers into the polymer matrix demonstrates an effective method to fabricate ***,current CSEs based on traditional poly(ethylene oxide)(PEO)polymer suffer from the poor ionic conductivity of PEO and agglomeration effect of inorganic fillers at high concentrations,which limit further improvements in Li+conductivity and electrochemical ***,we synthesize a novel PEO based cross-linked polymer(CLP)as the polymer matrix with naturally amorphous structure and high room-temperature ionic conductivity of 2.40×10^(−4)S cm^(−1).Li_(0.3)La_(0.557)TiO_(3)(LLTO)nanofibers are incorporated into the CLP matrix to form composite solid electrolytes,achieving enhanced ionic conductivity without showing filler *** high content of Li-conductive nanofibers improves the mechanical strength,ensures the conductive network,and increases the total Li+conductivity to 3.31×10^(−4)S cm^(−1).The all-solid-state Li|LiFePO_(4)batteries with LLTO nanofiber-incorporated CSEs are able to deliver attractive specific capacity of 147 mAh g^(−1)at room temperature,and no evident dendrite is found at the anode/electrolyte interface after 100 cycles.

关键词： Cross-linked PEO polymer Li_(0.33)La_(0.55)TiO_(3)nanofibers Composite solid electrolyte All-solid-state batteries Ambient working temperature

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Spatially regulated water-heat transport by fluidic diode membrane for efficient solar-powered desalination and electricity generation

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Nature communications 2025年第1期16卷 5050页

作者： Yuanhang Cao Jiemin Wang Weixin Guan Meng An Peng Yan Zhengtong Li Changsheng Zhao Guihua Yu College of Biomedical Engineering Sichuan University Chengdu China. College of Biomedical Engineering Sichuan University Chengdu China. jiemin@***. Materials Science and Engineering Program and Walker Department of Mechanical Engineering The University of Texas at Austin Austin TX USA. Yangtze Delta Region Academy in Jiaxing Beijing Institute of Technology JiaXing China. anmeng@photon.t.u-tokyo.ac.jp. College of Mechanical and Electrical Engineering Shaanxi University of Science and Technology Xi'an China. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University Nanjing China. College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu China. zhaochsh70@***. Materials Science and Engineering Program and Walker Department of Mechanical Engineering The University of Texas at Austin Austin TX USA. ghyu@austin.utexas.edu.

Interfacial solar-driven evaporation has attracted great research interests, given its high conversion efficiency of solar energy and transformative industrial potential for desalination. However, current evaporators with porous volume remain critical challenges by inherently balancing efficient fluid transport and effective heat localization. Herein, we propose the strategy and design of lightweight, flexible and monolayered fluidic diode membrane-based evaporators, featuring regularly arrayed macropores and dense nanopores on each side. Such a delicate microstructure offers universality in establishing asymmetric channels along macroporous-to-nanoporous to enable the diode-like directional water transport as well as facilitate the heat localization on the nanopores side. Consequently, a high evaporation rate of a maximum 3.82 kg m h can be achieved under 1 sun illumination, exceeding most 2D and 3D evaporators. Besides, the durability and practicability of our evaporators are validated through salt resistance tests, purification experiments among various contaminants, and outdoor evaluations. Moreover, the structure engineering and water-transport optimization of fluidic diode membranes also offer potentials for hydrovoltaic applications, with over 1.6 V generated by tandem devices at the ambient environment. This work provides a concept for designing high-performance monolayered membranes applicable in environmental and energy-related realms.

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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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Bacteria-based bioactive materials for tumor immunotherapy

Precision Medicine and Engineering

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Precision Medicine and engineering 2024年第2期1卷

作者： Yongcan Li Fangfang Cao Lie Ma Lulu Jin MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 PR China Departments of Diagnostic Radiology Surgery Chemical and Biomolecular Engineering and Biomedical Engineering Yong Loo Lin School of Medicine and College of Design and Engineering National University of Singapore 119074 Singapore Nanomedicine Translational Research Program NUS Center for Nanomedicine Yong Loo Lin School of Medicine National University of Singapore 117597 Singapore

As one of the most abundant biological populations endowed with unique properties such as specific targeting and genetic engineering vectors, bacteria with immunogenic potential have garnered significant attention for their ability to elicit immune activation against tumors. This approach has achieved substantial breakthroughs as a modality for cancer treatment and is known as bacterial immunotherapy. However, the immunosuppressive tumor microenvironment (TME) can inhibit the immune response induced by bacteria and promote tumor growth and metastasis. To overcome this challenge, recent advancements in bacteria-based bioactive materials, which are biological substances synthesized by bacteria, have not only harnessed the inherent properties of bacteria but also specifically targeted the modulation of the TME, providing a more favorable environment for immune activation and significantly enhancing the efficacy of immunotherapy for cancer treatment. This review introduces the key mechanisms of bacteria-based biomaterials as anticancer agents and reviews the latest research progress, along with their clinical applications in cancer treatment. Finally, the potential and challenges of bacteria-based biomaterials for tumor therapy are explored, aiming to provide insights into the functions of bacteria-based bioactive materials and their role in advancing cancer immunotherapy while offering recommendations for the development of new bacteria-based biomaterials.

关键词： Tumor immunotherapy Immune cells Tumor microenvironment Bioactive materials

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Development and Applications of D-Amino Acid Derivatives-based Metabolic Labeling of Bacterial Peptidoglycan

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Angewandte Chemie 2024年第17期136卷

作者： Dr. Yongfang Zheng Xinyu Zhu Mingyi Jiang Dr. Fangfang Cao Dr. Qing You Prof. Xiaoyuan Chen Fujian-Taiwan Science and Technology Cooperation Base of Biomedical Materials and Tissue Engineering Engineering Research Center of Industrial Biocatalysis Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering Fujian Provincial Key Laboratory of Polymer Materials College of Chemistry and Materials Science Fujian Normal University 32 Shangsan Road Fuzhou 350007 P.R. China Departments of Diagnostic Radiology Surgery Chemical and Biomolecular Engineering and Biomedical Engineering Yong Loo Lin School of Medicine and Faculty of Engineering National University of Singapore Singapore 119074 Singapore Nanomedicine Translational Research Program NUS Center for Nanomedicine Yong Loo Lin School of Medicine National University of Singapore Singapore 117597 Singapore Clinical Imaging Research Centre Centre for Translational Medicine Yong Loo Lin School of Medicine National University of Singapore Singapore 117599 Singapore

Peptidoglycan, an essential component within the cell walls of virtually all bacteria, is composed of glycan strands linked by stem peptides that contain D-amino acids. The peptidoglycan biosynthesis machinery exhibits high tolerance to various D-amino acid derivatives. D-amino acid derivatives with different functionalities can thus be specifically incorporated into and label the peptidoglycan of bacteria, but not the host mammalian cells. This metabolic labeling strategy is highly selective, highly biocompatible, and broadly applicable, which has been utilized in various fields. This review introduces the metabolic labeling strategies of peptidoglycan by using D-amino acid derivatives, including one-step and two-step strategies. In addition, we emphasize the various applications of D-amino acid derivative-based metabolic labeling, including bacterial peptidoglycan visualization (existence, biosynthesis, and dynamics, etc.), bacterial visualization (including bacterial imaging and visualization of growth and division, metabolic activity, antibiotic susceptibility, etc.), pathogenic bacteria-targeted diagnostics and treatment (positron emission tomography (PET) imaging, photodynamic therapy, photothermal therapy, gas therapy, immunotherapy, etc.), and live bacteria-based therapy. Finally, a summary of this metabolic labeling and an outlook is provided.

关键词： peptidoglycan metabolic labeling D-amino acid derivatives peptidoglycan and bacterial visualization pathogenic bacteria-targeted diagnostics and treatment

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Influence of compatibilizer and carbon nanotubes on mechanical, electrical, and barrier properties of PTT/ABS blends

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Advanced Industrial and engineering polymer Research 2019年第3期2卷 121-125页

作者： Braga, Natália F. LaChance, Anna Marie Liu, Bin Sun, Luyi Passador, Fabio R. Technology Laboratory of Polymers and Biopolymers Federal University of São Paulo São José dos CamposSP12231-280 Brazil Polymer Program Institute of Materials Science University of Connecticut StorrsCT06269 United States Department of Chemical and Biomolecular Engineering University of Connecticut StorrsCT06269 United States Beijing Key Laboratory of Electrochemical Process and Technology for Materials College of Materials Science and Engineering Beijing University of Chemical Technology Beijing100029 China Department of Biomedical Engineering University of Connecticut StorrsCT06269 United States

Composites based on poly (trimethylene terephthalate) (PTT)/acrylonitrile butadiene styrene (ABS) blend with maleic anhydride grafted PTT (PTT-g-MA) as a compatibilizer and carbon nanotubes (CNTs) as reinforcers were prepared via melt-mixing, and the mechanical, electrical, and barrier properties of the as-fabricated composites were evaluated. Scanning electron microscopy (SEM) characterization of the cross-section of the composites after tensile test showed improved phase stability in the presence of the compatibilizer PTT-g-MA. The toughness of the composites was also improved with the addition of the compatibilizer and CNTs. Electrical conductivity tests were carried out and the results showed that CNT-reinforced composite exhibited significantly increased conductivity. Since barrier properties are very sensitive to structural changes, the oxygen transmission rate (OTR) of the composites was measured and the results showed that the composites possess a much high oxygen barrier compared to that of the neat PTT or ABS. © 2019 Kingfa SCI. & TECH. CO., LTD.

关键词： Carbon nanotubes

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Correction to: N‑doped carbon nanospheres as selective fluorescent probes for mercury detection in contaminated aqueous media: chemistry, fluorescence probing, cell line patterning, and liver tissue interaction

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Environmental science and pollution research international 2025年第20期32卷 2025 May 6页

作者： Soheil Sojdeh Ali Banitalebi Dehkordi Alireza Badiei Ali Zarrabi Pooyan Makvandi Milad Ashrafizadeh Mohammad Reza Saeb Eder C Lima Mohammad Rabiee Mohsen Asadnia Thomas J Webster Navid Rabiee School of Chemistry College of Science University of Tehran P.O. Box Tehran 14155‑6455 Iran. Department of Biomedical Engineering Faculty of Engineering and Natural Sciences Istinye University Istanbul Turkey. Centre for Materials Interfaces Istituto Italiano Di Tecnologia 56025 Pisa Italy. Sabanci University Orta Mahalle Üniversite Caddesi No. 27 Orhanlı Tuzla 34956 Istanbul Turkey. Department of Polymer Technology Gdańsk University of Technology G. Narutowicza 11/12 80‑233 Gdańsk Poland. Institute of Chemistry Federal University of Rio Grande Do Sul (UFRGS) Av. Bento Goncalves 9500 Postal Box 15003 Porto Alegre ZIP 91501‑970 Brazil. profederlima@***. Biomaterials Group Department of Biomedical Engineering Amirkabir University of Technology Tehran Iran. School of Engineering Macquarie University New South Wales Sydney 2109 Australia. School of Health Sciences and Biomedical Engineering Hebei University of Technology Tijian 300130 China. School of Engineering Saveetha University Chennai 602105 India. Interdisciplinary Laboratory for Advanced Materials (LIMAV) Materials Science and Engineering Graduate Program Federal University of Piaui Teresina 64049‑550 Brazil. Centre for Molecular Medicine and Innovative Therapeutics Murdoch University Perth 6150 Australia.

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Integrated dry poly(3,4-ethylenedioxythiophene):polystyrene sulfonate electrodes on finished textiles for continuous and simultaneous monitoring of electrocardiogram, electromyogram and electrodermal activity

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Flexible and Printed Electronics 2020年第3期5卷

作者： Sinha, Sneh K. Posada-Quintero, Hugo F. Noh, Yeonsik Allen, Christopher Daniels, Robert Chon, Ki H. Sloan, Laurie Sotzing, Gregory A. Polymer Program Institute of Materials Science University of Connecticut 97 North Eagleville Road StorrsCT06269 United States Department of Biomedical Engineering University of Connecticut 260 Glenbrook Road StorrsCT06269 United States School of Fine Arts University of Connecticut 1295 Storrs Rd. Unit1128 United States Department of Chemistry University of Connecticut 55 North Eagleville Road StorrsCT06269 United States

Herein, screen printed electrodes prepared from commercially available conducting polymer poly(3,4-ethylenedioxythiophene):polystyrene sulfonate have been shown to record simultaneous electromyogram (EMG), electrocardiogram (ECG), and electrodermal activity (EDA) from a spandex t-shirt sleeve in dry state. Secondly, electrodes printed on an arm sleeve recorded EMG during muscle contraction and were compared to commercial Ag/AgCl electrodes that use hydrogel. Thirdly, the printed electrodes have been shown to be stable to ten washes with detergent and ten dry cycles upon treatment with commercially sold fabric protectors with ECG signals being recorded in underwater conditions from wrist. Lastly, EDA was measured from fingers by recording changes in skin conductance brought about by cognitive stress. This use of integrated sensors on a t-shirt provides a tool for continuous and simultaneous measurement of vital signals in at-risk patients. © 2020 IOP Publishing Ltd

关键词： Electrocardiograms

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