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Green Synthesis and Catalysis 2024年

作者： Mohsin, Muhammad Zubair Mohsin, Ali Zaman, Waqas Qamar Zhu, Xiaojuan Zhao, Xihua Abbas, Zain Hussain, Muhammad Hammad Shan, Ali Salim-ur-Rehman Nawaz, Muhammad Asif Omer, Rabia Zhuang, Yingping Guo, Meijin Huang, Jiaofang State Key Laboratory of Bioreactor Engineering East China University of Science and Technology Shanghai 200237 China Institute of Environmental Sciences and Engineering School of Civil and Environmental Engineering National University of Sciences and Technology (NUST) Islamabad 44000 Pakistan College of Life Science Jiangxi Normal University Nanchang 330022 China School of Resources and Environmental Engineering State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and Technology Shanghai 200237 China College of Materials Science and Engineering Shenzhen Key Laboratory of Polymer Science and Technology Guangdong Research Center for Interfacial Engineering of Functional Materials Shenzhen University Shenzhen 518055 China Department of Food Science and Technology Riphah International University Faisalabad Campus Faisalabad 44000 Pakistan Institute of Materials Science of Seville (ICMS) University of Seville Seville 41092 Spain

This study investigated a new approach for synthesizing Bacillus subtilis biofilm-supported Mn–Ce/zeolite catalysts for the degradation of gaseous toluene. Four different metal oxide nano-catalysts (ZMn, ZMnCe-10%, ZMnCe-20%, and ZMnCe-30%) were synthesized with varying ratios of manganese (Mn) and cerium (Ce) on zeolite nanoparticles. TEM, SEM, XRD, BET, XPS, and EDX mapping were used to examine these four samples, as well as simple zeolite. Based on these analyses, the catalytic activity of the prepared samples ZMn, ZMnCe-10%, ZMnCe-20%, and ZMnCe-30% for the complete oxidation of toluene and toluene intermediate products were tested with Non-thermal plasma (NTP) technology in a dielectric barrier discharge (DBD) reactor. Among all, ZMnCe-20% showed the highest toluene degradation efficiency (89%) at low concentrations (200 ppm) and humidity (>50%). Later, highly efficient and hydrophobic nano-biocatalysts were prepared by combining B. subtilis biofilm wild-type (WT) and engineered B. subtilis biofilm EPS with ZMnCe-20% catalyst. EPS is the main component found in biofilm matrix and plays a key role in influencing properties such as biofilm stability, electron transfer, surface roughness and hydrophobicity. Compared to WT B. subtilis biofilm, EPS overexpressed B. subtilis biofilm showed stronger growth and development on ZMnCe-20% nanocatalyst. Moreover, the NTP system packed with ZMnCe-20%/biofilm (EPS+) nano-biocatalyst exhibited the highest toluene degradation activity (99%) with (83%) CO₂ selectivity, (up to 50%) reduction in NOx concentration and complete ozone decomposition at (250 ppm) toluene concentrations and increased humidity (>90%). High-energy electrons generated in the NTP system break the C–H and C–C bond between the rings of the toluene molecule, forming several byproducts which are later reacted with active radical species such as O[rad], OH[rad], and O₃ and further converted into final degradation products (CO₂

关键词： CO2 selectivity Engineered Bacillus subtilis biofilm Metal nanoparticles Toluene oxidation Zeolite

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Quasi-Grotthuss mechanism in a nonporous sulphate

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Journal of Energy Chemistry 2021年第6期30卷 233-237,I0007页

作者： Bo Li Yinuo Wang Jiasheng Wang Xue Yong Jingping Zhang Heibei Key Laboratory of Hazardous Chemicals Safety and Control Technology School of Chemical and Environmental EngineeringNorth China Institute of Science and TechnologyLangfang 065201HebeiChina Faculty of Chemistry Northeast Normal UniversityChangchun 130024JilinChina Department of Physics and Engineering Physics University of Saskatchewan116 Science PlaceSaskatoonSK S7N 5E2Canada State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022JilinChina

The transportation of the proton,the smallest ion in nature,is rudimentary in chemical and biological reactions[1,2],such as photosynthesis[3],enzyme catalysis[4],and Brensted acid/base reactions[5],and currently even imperative in some devices,namely proton exchange membrane fuel cells(PEMFCs)[6,7].The processes of these elementary reactions,like proton transfer,appear to be astonishingly analogous.

关键词： Quasi-Grotthuss mechanism Proton transfer Nonporous sulphate DFT study

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Molecular Insights into the Structure-Property Relationships of 3d Printed Polyamide Reverse-Osmosis Membrane for Desalination

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SSRN 2022年

作者： He, Jinlong Yang, Jason McCutcheon, Jeffrey R. Li, Ying Department of Mechanical Engineering University of Connecticut StorrsCT06269 United States Division of Chemistry and Chemical Engineering California Institute of Technology PasadenaCA91125 United States Department of Chemical & Biomolecular Engineering Center for Environmental Sciences and Engineering University of Connecticut StorrsCT06269 United States Department of Mechanical Engineering Polymer Program Institute of Materials Science University of Connecticut StorrsCT06269 United States

3D-printing is an emerging method for manufacturing polyamide (PA) reserve osmosis (RO) membranes for water treatment and desalination, which can precisely control membrane structural properties, such as thickness, roughness, and resolution. However, the synthesis-structure (i.e., degree of cross-linking (DC), m-phenylenediamine/trimesoyl chloride (MPD/TMC) ratio, and membrane thickness) to property (permeability and water-salt selectivity) relationships for these membranes has not been well understood. At the same time, a microscopic understanding of the physical mechanism of water and salt transport is needed to guide the design of high-performance 3D-printed membranes and improve printing efficiency. Thus, the atomic-scale transport features and energetics of water and salt ions are studied at high pressure for the 3D-printed PA RO membranes with the different DCs and MPD/TMC ratios through non-equilibrium molecular dynamics (NEMD) simulations. Factoring in membrane structure properties, rejection ratio of salt ions and pressure-dependent water flux, 3D-printed PA membranes having an MPD/TMC ratio of 3.0:2.0 and a DC between 80%~90% attains ideal performance: high water flux, high rejection of salt ions, and excellent structural integrity. Mechanistically, water permeability for highly cross-linked PA RO membranes depends on the temporary on-and-off channels that allow water molecules to jump from one cavity to another at high pressure. In addition, higher pressures cause a rapid compaction of PA membranes’ free volume and membrane thickness. Membrane failure at high pressure is determined by the DC and MPD/TMC ratios-dependent compressive yield strength. In short, these findings provide physical insights for optimizing existing PA membranes and designing next-generation desalination membranes at the molecular level. © 2022, The Authors. All rights reserved.

关键词： Molecular dynamics

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Π-Π interactions stabilize PeptoMicelle-based formulations of Pretomanid derivatives leading to promising therapy against tuberculosis in zebrafish and mouse models

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Journal of Controlled Release 2023年 354卷 851-868页

作者： Dal, Nils-Jørgen K. Schäfer, Gabriela Thompson, Andrew M. Schmitt, Sascha Redinger, Natalja Alonso-Rodriguez, Noelia Johann, Kerstin Ojong, Jessica Wohlmann, Jens Best, Andreas Koynov, Kaloian Zentel, Rudolf Schaible, Ulrich E. Griffiths, Gareth Barz, Matthias Fenaroli, Federico Department of Biosciences University of Oslo Blindernveien 31 Oslo0371 Norway Department of Chemistry Johannes Gutenberg University Mainz Duesbergweg 10-14 Mainz55128 Germany Division of BioTherapeutics Leiden University Einsteinweg 55 Leiden2333 CC Netherlands Auckland Cancer Society Research Centre School of Medical Sciences The University of Auckland Private Bag 92019 Auckland1142 New Zealand Max Planck Institute for Polymer Research Ackermannweg 10 Mainz55128 Germany Forschungszentrum Borstel Leibniz Lungenzentrum Program Area Infections Div. Cellular Microbiology University of Lübeck Immunochemistry and Biochemical Microbiology & German Center for Infection Research partner site Hamburg-Lübeck - Borstel - Riems Borstel23845 Germany Department of Chemistry Bioscience and Environmental Engineering University of Stavanger Stavanger4021 Norway

Tuberculosis is the deadliest bacterial disease globally, threatening the lives of millions every year. New antibiotic therapies that can shorten the duration of treatment, improve cure rates, and impede the development of drug resistance are desperately needed. Here, we used polymeric micelles to encapsulate four second-generation derivatives of the antitubercular drug pretomanid that had previously displayed much better in vivo activity against Mycobacterium tuberculosis than pretomanid itself. Because these compounds were relatively hydrophobic and had limited bioavailability, we expected that their micellar formulations would overcome these limitations, reduce toxicities, and improve therapeutic outcomes. The polymeric micelles were based on polypept(o)ides (PeptoMicelles) and were stabilized in their hydrophobic core by π-π interactions, allowing the efficient encapsulation of aromatic pretomanid derivatives. The stability of these π-π-stabilized PeptoMicelles was demonstrated in water, blood plasma, and lung surfactant by fluorescence cross-correlation spectroscopy and was further supported by prolonged circulation times of several days in the vasculature of zebrafish larvae. The most efficacious PeptoMicelle formulation tested in the zebrafish larvae infection model almost completely eradicated the bacteria at non-toxic doses. This lead formulation was further assessed against Mycobacterium tuberculosis in the susceptible C3HeB/FeJ mouse model, which develops human-like necrotic granulomas. Following intravenous administration, the drug-loaded PeptoMicelles significantly reduced bacterial burden and inflammatory responses in the lungs and spleens of infected mice. © 2023 The Authors

关键词： Micelles

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Multi-Functional Locomotion of Collectively Assembled Shape-Reconfigurable Electronics

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SSRN 2023年

作者： Cho, Woongbi Kang, Dong Jun Hahm, Min Jeong Jeon, Jisoo Kim, Dong-Gyun Kim, Yong Seok Han, Tae Hee Wie, Jeong Jae Department of Organic and Nano Engineering Hanyang University 222 Wangsimni-ro Seongdong-gu Seoul04763 Korea Republic of Human-Tech Convergence Program Hanyang University 222 Wangsimni-ro Seongdong-gu Seoul04763 Korea Republic of Program in Environmental and Polymer Engineering Inha University 100 Inha-ro Michuhol-gu Incheon22212 Korea Republic of Advanced Materials Division Korea Research Institute of Chemical Technology 141 Gajeong-ro Yuseong-gu Daejeon34114 Korea Republic of Department of Chemical Engineering Hanyang University 222 Wangsimni-ro Seongdong-gu Seoul04763 Korea Republic of Institute of Nano Science and Technology Hanyang University 222 Wangsimni-ro Seongdong-gu Seoul04763 Korea Republic of Department of Chemical Engineering State University of New York College of Environmental Science and Forestry SyracuseNY13210 United States The Michael M. Szwarc Polymer Research Institute State University of New York College of Environmental Science and Forestry SyracuseNY13210 United States

Beyond typical flexible electronics, stimuli-responsive shape-reconfigurable electronics are great candidates for the next-generation miniaturized electronics, carrying out complex missions by morphing their geometry and transferring their bodies to the desired positions. To achieve shape-reconfigurable electronics, it is essential to give shape-programmability as well as high electrical conductivity for polymeric materials. However, this is difficult to achieve due to a trade-off relationship between the shape-reconfigurability and the electrical conductivity of polymer composites that embed conductive fillers. Herein, we introduced highly conductive and physical intelligence-encoded polymeric composites based on MXene/liquid crystal elastomer (LCE) bilayer (MLB), for shape-reconfigurable electronics performing on-demand and reversible 3D morphing and locomotion. The MLB demonstrated remarkable photo-/electro-thermally driven bending and twisting performance under near-infrared (NIR) light with 0.4 W cm-2 and voltage application of 3.5 V without delamination, originating from both high photothermal conversion efficiency and electrical conductivity of ~5,300 S cm-1. The MLB also proved structural durability after 1000 cycles of bending originating from the stable interface induced by hydrogen bonding between MXene and LCE. Macroscopic collective assembly of the MLBs enabled dynamic locomotion inspired by nature. Collectively assembled MLBs demonstrated crawling, rotating, jumping, and sling-shooting by engineering the symmetricity of assembled structure and introducing snap-through instability. © 2023, The Authors. All rights reserved.

关键词： Flexible electronics

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Lignocellulose aerogel and amorphous silica nanoparticles from rice husks

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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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Interfacial Modification to Anomalously Facilitate Thermal Transport Through Cathode-Separator Composite in Lithium-Ion Batteries

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SSRN 2022年

作者： He, Jinlong Xian, Weikang Tao, Lei Corrigan, Patrick Li, Ying Department of Mechanical Engineering University of Connecticut StorrsCT06269 United States Department of Mechanical Engineering Polymer Program Institute of Materials Science University of Connecticut StorrsCT06269 United States Department of Chemistry University of Connecticut StorrsCT06269 United States

Adopting the self-assembled monolayers (SAMs) approach, various organic molecules were selected as the heat controllers to modulate the interfacial thermal conductance (ITC) between the cathode, lithium cobalt oxide (LCO), and the separator, polyethylene (PE). Silane-based SAMs molecules with different groups, including -NH 2 , -SH, and -CH 3 , were assembled into the LCO-PE composite’s interphase. Through molecular dynamics (MD) simulations, our results demonstrate SAMs molecules-decorated LCO-PE nanocomposites give a notably improved interfacial heat transfer but are of different magnitude. Such difference mainly results from the different non-bonded interactions and compatibility between SAMs molecules and PE. Of the three SAMs molecules, the assembled 3-aminopropyl trimethoxysilane (APTMS) featuring –NH 2 groups improves the ITC the most, about 303.29% in comparison with the pristine interface. Furthermore, these findings help elucidate the underlying mechanisms of how SAMs molecules improve heat transfer across the LCO-PE interphase. Specifically, such enhancement is greatly attributed to the unique SAMs molecules, which build the new heat transfer pathways between LCO and PE, straighten SAMs molecules’ morphology, remove the discontinuities in the temperature field, develop the strong non-bonded interactions between SAMs molecules and PE, and strengthen the coupling vibration of two materials. © 2022, The Authors. All rights reserved.

关键词： Molecular dynamics

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Influence of Preparation Method on Properties of Natural Rubber/Sepiolite Composites 1

Influence of Preparation Method on Properties of Natural Rub...

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1st International Conference on Material Processing and Technology, ICMProTech 2021

作者： Jitsopin, Patiwarada Masa, Abdulhakim Hayeemasae, Nabil Rasidi, Mohamad Syahmie Mohamad Rubber Engineering and Technology Program International College Prince of Songkla University Songkhla Hat Yai90110 Thailand Department of Rubber Technology and Polymer Science Faculty of Science and Technology Prince of Songkla University Pattani Campus Pattani 94000 Thailand Perlis 01000 Malaysia Perlis 01000 Malaysia

Natural rubber (NR) composites filled with various sepiolite loadings were prepared and optimized by two different mixing methods, namely, melt mixing and latex mixing methods. The properties were evaluated through viscosity, stress relaxation, curing behaviors and tensile properties of rubber composites. The viscosity was influenced by sepiolite content and mixing methods. The greater interaction between rubber and sepiolite was obtained from melt mixing method. This reflected to the greater tensile strength found in this method. Considering the content of sepiolite, similar trend was observed for the curing properties and elongation at break. The greatest tensile strength was observed when the sepiloite content was at 1 phr. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Rubber

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Direct synthesis of large-area Al-doped graphene by chemical vapor deposition:Advancing the substitutionally doped graphene family

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Nano Research 2022年第2期15卷 1310-1318页

作者： Sami Ullah Yu Liu Maria Hasan Wenwen Zeng Qitao Shi Xiaoqin Yang Lei Fu Huy Q.Ta Xueyu Lian Jingyu Sun Ruizhi Yang Lijun Liu Mark H.Rummeli College of Energy Soochow Institute for Energy and Materials Innovations Soochow UniversitySuzhou 215006China Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province Soochow UniversitySuzhou 215006China NUTECH School of Applied Sciences&Humanities and Computer Engineering Department National University of TechnologyIslamabad 42000Pakistan Centre of Polymer and Carbon Materials Polish Academy of SciencesM.Curie-Sklodowskiej 34Zabrze 41-819Poland School of Energy and Power Engineering Xian Jiaotong UniversityXian 710049China College of Chemistry and Molecular Science Wuhan UniversityWuhan 430072China Institute for Complex Materials IFW Dresden 20 Helmholtz Strasse Dresden 01069Germany Institute of Environmental Technology VSB-Technical University of Ostrava17.listopadu 15Ostrava 70833Czech Republic

Graphene doping continues to gather momentum because it enables graphene properties to be tuned,thereby affording new properties to,improve the performance of,and expand the application potential of *** can be chemically doped using various methods such as surface functionalization,hybrid composites(e.g.,nanoparticle decoration),and substitution doping,wherein C atoms are replaced by foreign ones in the graphene *** works have predicted that graphene could be substitutionally doped by aluminum(Al)atoms,which could hold promise for exciting applications,including hydrogen storage and evolution,and *** theoretical predictions suggest that Al substitutionally doped graphene(AIG)could serve as a material for gas sensors and the catalytic decomposition of undesirable ***,fabricating Al substitutionally doped graphene has proven challenging until ***,we demonstrate how controlled-flow chemical vapor deposition(CVD)implementing a simple solid precursor can yield high-quality and large-area monolayer AIG,and this synthesis is unequivocally confirmed using various characterization methods including local electron energy-loss spectroscopy(EELS).Detailed high-resolution transmission electron microscopy(HRTEM)shows numerous bonding configurations between the Al atoms and the graphene lattice,some of which are not theoretically ***,the produced AIG shows a CO_(2) capturability superior to those of other substitutionally doped graphenes.

关键词： aluminum-doped graphene single-solid precursor chemical vapor deposition carbon dioxide capture energy storage catalytic applications

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Electric field-stimulated Raman scattering enhancing biochips fabricated by Au nano-islands deposited on laser-scribed 3D graphene for uremic toxins detection

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Journal of the Taiwan Institute of Chemical Engineers 2024年 154卷

作者： Juang, Ruey-Shin Wang, Kuan-Syun Kuan, Tsai-Yu Chu, Yu-Ju Jeng, Ru-Jong Hardiansyah, Andri Liu, Shou-Hsuan Liu, Ting-Yu Department of Chemical and Materials Engineering Chang Gung University Taoyuan Guishan33302 Taiwan Division of Nephrology Department of Internal Medicine Chang Gung Memorial Hospital Linkou Taiwan Department of Safety Health and Environmental Engineering Ming Chi University of Technology New Taipei City243303 Taiwan Institute of Polymer Science and Engineering National Taiwan University Taipei10617 Taiwan Department of Materials Engineering Ming Chi University of Technology New Taipei City243303 Taiwan Selatan Tangerang15314 Indonesia Research Center for Intelligent Medical Devices Center for Plasma and Thin Film Technologies Ming Chi University of Technology New Taipei City243303 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Taoyuan City32003 Taiwan

Background: The detection of uremic toxins is important for early-stage diagnosis of chronic kidney disease. However, Raman spectroscopy is shortcoming of the sensitivity for detecting the trace analytes. The electric field-induced chemical surface-enhanced Raman scattering (SERS) enhancement (EC-SERS) detection is great way to solve and investigates uremic toxins. Methods: In this work, various thickness (5–25 nm) of Au nano-islands were deposited on the 3D laser-scribed graphene (LSG) substrate for increasing the sensitivity and reproducibility of SERS detection. Particularly, applying the electric-field stimulus in Au-LSG SERS substrate allows to further amplify the SERS signals, and measure the EC-SERS signals of biomolecules. Significant findings: The results show that 20 nm of Au nano-islands coated on LSG substrate obtains the highest SERS enhancement effects, and successfully detects the dye molecules (rhodamine 6G, R6G) and uremic toxins (urea and creatinine). The EC-SERS signals of R6G would enhance 17 times at the potential of −1.3 V, compared to SERS signals without applying an electric field. Moreover, the urea also displays 4 times higher at the potential of −0.2 V. The detecting molecules could be selected to enhance SERS signals by different voltages, showing the capability of selectively detecting biomolecules, which can solve the problem of complex sample pretreatment. © 2023

关键词： Biomolecules

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