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SSRN 2024年

作者： Lu, Yangtian Zhu, Weiwei Wu, Yusong Xu, Yutao Shao, Liping Zhang, Haibing Chen, Jiexun Zhang, Jianjun Ling, Jun MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou310058 China Zhejiang Research Institute of Chemical Industry Co. Ltd. Hangzhou310023 China

In order to replace toxic fluorinated surfactants such as PFOA and GenX, herein we report a series of non-fluorinated surfactants (NFS) for the emulsion polymerization of fluorinated monomers. The surfactant is a statistic copolymer synthesized from free radical polymerization of poly(ethylene oxide) methacrylate (PEGMA) as hydrophilic monomer with methyl methacrylate (MMA) or tert-butyl methacrylate (TBMA) as hydrophobic comonomer. With properly designed hydrophile lipophile balance (HLB), monomer ratio, and the length of PEG segments, the polymeric NFS form unimolecular micelles in water, which facilitates the emulsion polymerization of fluorinated monomers including vinyl difluoride (VDF) where the solid content of emulsion can be higher than 25 wt% without the occurrence of significant coagulation. The optimized loading ratio of NFS is as low as 88 ppm which is ten times lower than that of fluorinated surfactants. The results demonstrate that the statistic copolymers construct unimolecular micelles to be powerful NFS for the emulsion polymerization of fluorinated monomers. © 2024, The Authors. All rights reserved.

关键词： Ethylene

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Evaluating nitrogen sources for enhanced halophilic bacteria growth, electron transfer, and microbial fuel cell performance

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Chemosphere 2025年 378卷 144397页

作者： Christwardana, Marcelinus Khoirunnisa, K. Asy'ari, Mukhammad Hadiyanto, H. Department of Chemistry Faculty of Science and Mathematics Diponegoro University 50275 Indonesia Master Program of Energy School of Postgraduate Studies Diponegoro University 50241 Indonesia Research Collaboration Center for Electrochemistry BRIN – Diponegoro University 50275 Indonesia Department of Chemical Engineering Faculty of Engineering Diponegoro University 50275 Indonesia

This study investigates the comparative effects of different nitrogen sources—peptone, tryptone, and bovine serum albumin (BSA)—on the growth, electron transport mechanisms, and MFCs performance of halophilic bacteria Bacillus clausii J1G-o%B. The objective is to identify the most effective nitrogen source for optimizing bacterial growth and enhancing MFC efficiency. Comprehensive analysis reveals that tryptone and peptone significantly enhance bacterial growth and stability compared to BSA. Increased concentrations of these nitrogen sources correlate with elevated ammonia production and notable pH changes, indicating heightened metabolic activity. The non-linear relationship between scan rate and current density suggests diffusion-limited redox reactions. Notably, higher tryptone concentrations significantly increase the electron transfer rate constant to 3.66 ± 0.02 s−1 when the concentration increases to 0.1 g/100 mL. Early voltage increases at around the 30th hour to 0.175 V under the T-0.1 condition further support the critical role of tryptone in accelerating bacterial growth and biofilm formation. Cyclic voltammetry experiments demonstrate that nitrogen source type and concentration influence electrical double layer characteristics. These findings underscore the potential of tryptone to optimize Bacillus clausii electrochemical performance, achieving a maximum power density of 36.93 mW/m2 at a current density of 196 mA/m2, paving the way for bioelectrochemical system applications. © 2025 Elsevier Ltd

关键词： Rate constants

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Intercalation engineering of Nickle-Cobalt-Layered Double Hydroxide for Long-Lifespan Supercapacitor

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SSRN 2023年

作者： Hu, Wenxuan Chen, Lu Geng, Biao Song, Yihu Wu, Ziliang Zheng, Qiang Shan, Gurong Du, Miao MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou310058 China Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Product School of Biological and Chemical Engineering Zhejiang University of Science and Technology Hangzhou310023 China State Key Laboratory of Chemical Engineering College of Chemical and Biological Engineering Zhejiang University Hangzhou310058 China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan030000 China

Layered double hydroxides (LDHs), a class of 2D lamellar intercalating materials, is a promising candidate for high-performance supercapacitors, while its poor cycling stability has always been its Achille’s heel. Although doping metal ions into the host layer is proved to be an effective way to improve the weakness, the effects of intercalated anions on cycling performance have been rarely studied and highly underestimated. In this paper, we prepared a group of NiCo-LDHs with different intercalated anions, including NO3-, Cl-, SO42-, MoO42- and WO42-, which expand the interlayer spacing from 0.73 to 1.07 nm. Interestingly, although expanding the interlayer spacing could increase the specific capacity by providing more electrochemical active sites, it could not guarantee the improvement in cycling performance and rate capability. The correlation between interlayer spacing and cycling performance exhibits a "volcano" plot. The MoO42- intercalated NiCo-LDH with a 0.96 nm interlayer spacing delivers a high specific capacity of 795 C g-1 and the best cycling stability with 80% capacity retention after 20000 cycles, which is better than NiCo-LDH-NO3 (0.73 nm, 50% after 3000 cycles) and NiCo-LDH-WO4 (1.07 nm, 64% after 20000 cycles). By combining the results with the DFT method, the effects of intercalated anion on cycling performance are illustrated. In addition, the asymmetric supercapacitor also exhibits an excellent cycling stability with ~100% capacity retention after 10000 cycles. This study provides new insight to the compositional design of LDH-based electrodes for long-lifespan supercapacitors. © 2023, The Authors. All rights reserved.

关键词： Cobalt compounds

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Passivation of Perovskite Films Using Ionic Liquids

Passivation of Perovskite Films Using Ionic Liquids

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2022 Advances in science and engineering Technology International Conferences, ASET 2022

作者： Alashkar, Adnan Ibrahim, Taleb Khamis, Mustafa Hai Alami, Abdul American University of Sharjah Materials Science and Engineering PhD Program Sharjah United Arab Emirates American University of Sharjah Department of Chemical Engineering Sharjah United Arab Emirates American University of Sharjah Department of Biology Chemistry and Enviromental Sciences Sharjah United Arab Emirates University of Sharjah Department of Sustainable and Renewable Energy Engineering Sharjah United Arab Emirates

ISBN: (纸本)9781665418010

In this paper, the carrier recombination, and dynamics of Perovskite Solar Cells (PSC) are investigated. Ionic Liquids (IL) are presented in the bulk perovskite in an attempt to improve the dynamics of the charge transport layer. Time Resolved Photoluminescence (TRPL) is utilized to study the fast electronic decay of the perovskite samples and the influence of the IL on the stability of the perovskite film. The ILs are added to the perovskite in three ratios (5%, 10%, and 20%). The results showed that the presence of the ILs increases the electron lifetime inside the perovskite layer. In addition, 10% IL/perovskite displayed the highest increase of 72% in the lifetime. Where, for higher ratios, the lifetime started deteriorating. © 2022 IEEE.

关键词： Ionic liquids

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Creep-recovery deformation of 304 stainless-steel springs under low forces

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Mechanics of Materials 2024年 193卷

作者： Tsai, Ming-Yen Chang, Shou-Yi Zhang, Yulin Yang, Fuqian Lee, Sanboh Department of Materials Science and Engineering National Tsing Hua University Hsinchu300 Taiwan Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing400714 China Materials Program Department of Chemical and Materials Engineering University of Kentucky LexingtonKY40506 United States

The deformation behavior of materials at high temperatures determines the structural stability of mechanical structures under high-temperature service conditions. In this work, we prepare helical springs from 304 stainless-steel wires and study creep-recovery deformation of the helical springs under small forces at temperatures of 475–575 °C. In contrast to most methods reported in the literature, we use Kelvin representation of the Burgers model with a nonlinear dashpot in series connection to analyze the creep-recovery deformation of the helical springs and suggest the deformation mechanisms of the diffusion of interstitial atoms and dislocation generation/annihilation in transient creep and recovery of the helical springs under small forces. For the creep deformation, the stress exponent and activation energy for the plastic flow of the nonlinear dashpot are 2 and 57.8 kJ/mol, respectively, and the activation energy for the deformation flow of the linear dashpot is 41.8 kJ/mol. The nonlinear dashpot does not play any role in the recovery deformation, and the formation energy of defects for the recovery deformation of the helical springs is 51.4 kJ/mol. The approach used in this work provides a simple method to use a phenomenological model with a nonlinear dashpot to capture the power-law creep deformation of metallic materials. © 2024

关键词： Activation energy

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Acid-catalyzed hydrothermal treatment of sewage sludge: effects of reaction temperature and acid concentration on the production of hydrolysis by-products

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Biomass Conversion and Biorefinery 2023年第9期13卷 7533-7546页

作者： Pham, Van Toi Guan, Chung-Yu Han, Po-Chun Matsagar, Babasaheb M. Wu, Kevin C. W. Ahamad, Tansir Chang, Ching-Yuan Yu, Chang-Ping Graduate Institute of Environmental Engineering National Taiwan University Taipei106 Taiwan Faculty of Environmental Engineering National University of Civil Engineering 55 Giai Phong Hai Ba Trung Hanoi100000 Viet Nam Department of Environmental Engineering National Ilan University Yilan260 Taiwan Ph.D. Program of Green Materials and Precision Devices National Taiwan University Taipei10617 Taiwan Department of Chemical Engineering National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei10617 Taiwan Department of Chemistry College of Science King Saud University P.O. Box 2455 Riyadh11451 Saudi Arabia Water Innovation Low Carbon and Environmental Sustainability Research Center National Taiwan University Taipei106 Taiwan

Sewage sludge (SS) is an organic biomass from wastewater treatment plants, but the use of SS to produce bio-based chemicals under acid-catalyzed hydrolysis (ACH) processes is not well investigated. In this study, ACH processes were performed at 120, 150, and 180 °C using sulfuric acid (H2SO4) with concentrations of 0–0.5 M within a reaction time of 90–180 min to produce bio-based chemicals from SS. The results showed that the reaction temperature, reaction time, and concentrations of H2SO4 affected the yields of sugars, levulinic acid (LA), and 5-hydroxymethylfurfural (HMF). The highest xylose and glucose yields were 7.69 mol% and 5.22 mol% at 120 °C with 0.5 M H2SO4 during the 180 min of reaction time, respectively. Besides, under the ACH process at 180 °C and 180 min, the yield of LA reached a maximum value of 0.48 mol% at 0.5 M H2SO4, and the highest yield of HMF was 1.66 mol% at 0.1 M H2SO4. The data obtained also indicated that the ACH process led to an increase in soluble chemical oxygen demand, dissolved organic carbon, and total dissolved nitrogen. Fluorescence excitation-emission matrix of dissolved organic matter and thermogravimetric analysis of the treated SS further supported the enhanced solubilization of SS after ACH process, especially under higher reaction temperature and concentrations of H2SO4. Although the lower yields of bio-based chemicals might restrict the downstream recovery of the target products, the largely improved SS solubilization by ACH suggests that acid-catalyzed hydrothermal hydrolysis process has potential as an alternative pretreatment method of SS. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

关键词： Sewage sludge

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Multi-objective parametrization of interatomic potentials for large deformation pathways and fracture of two-dimensional materials

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npj Computational Materials 2021年第1期7卷 1042-1052页

作者： Xu Zhang Hoang Nguyen Jeffrey T.Paci Subramanian K.R.S.Sankaranarayanan Jose L.Mendoza-Cortes Horacio D.Espinosa Theoretical and Applied Mechanics Program Northwestern UniversityEvanstonILUSA Department of Chemistry University of VictoriaVictoriaBCCanada Center for Nanoscale Materials Argonne National LaboratoryLemontILUSA Department of Chemical Engineering&Materials Science Michigan State UniversityEast LansingMIUSA Department of Mechanical Engineering Northwestern UniversityEvanstonILUSA

This investigation presents a generally applicable framework for parameterizing interatomic potentials to accurately capture large deformation *** incorporates a multi-objective genetic algorithm,training and screening property sets,and correlation and principal component *** framework enables iterative definition of properties in the training and screening sets,guided by correlation relationships between properties,aiming to achieve optimal parametrizations for properties of ***,the performance of increasingly complex potentials,Buckingham,Stillinger-Weber,Tersoff,and modified reactive empirical bond-order potentials are *** MoSe_(2)as a case study,we demonstrate good reproducibility of training/screening properties and superior *** MoSe_(2),the best performance is achieved using the Tersoff potential,which is ascribed to its apparent higher flexibility embedded in its functional *** results should facilitate the selection and parametrization of interatomic potentials for exploring mechanical and phononic properties of a large library of two-dimensional and bulk materials.

关键词： materials apparent enable

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chemically Recovered Lithium Dendrites Enabled by Gradient-Distributed Liquid Metal Particles in Composite Polymer Electrolytes

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ACS Nano 2025年第21期19卷 20163-20171页

作者： Zheng, Tianrui Ju, Zhengyu Marschilok, Amy C. Takeuchi, Esther S. Takeuchi, Kenneth J. Yu, Guihua Materials Science and Engineering Program and Walker Department of Mechanical Engineering The University of Texas at Austin AustinTX78712 United States Institute of Energy: Sustainability Environment and Equity Stony Brook University Stony BrookNY11794 United States Department of Materials Science and Chemical Engineering Stony Brook University Stony BrookNY11794 United States Department of Chemistry Stony Brook University Stony BrookNY11794 United States Interdisciplinary Science Department Brookhaven National Laboratory UptonNY11973 United States

The increasing demand for high-energy-density rechargeable batteries has spurred significant advancements in lithium (Li) metal batteries employing solid polymer electrolytes. Extensive efforts have been devoted to tackling the crucial shorting problem in cycled polymer electrolytes via tuning the polymer chemistries and polymer-metal interfacial properties. However, the working principles of these designs mainly focus on physical/chemical suppression, instead of full recovery of the grown dendrites. Here, we propose an effective gradient design in polymer electrolytes by introducing Ga-based liquid metal (LM) particles with a depth-dependent content, enabling effective recovery of Li dendrites via spontaneous alloying reaction. Such an asymmetric electrolyte configuration is capable of fully chemically alloying the dendrites upon their puncturing into the LM-rich layer, while inhibiting electrical percolation at the LM-free layer, especially under mechanical pressure during cell assembly. Post-mortem analyses reveal the structural deformation of piercing dendrites into spherical Li-LM alloys, thereby preventing shorting even with extended cycles. Consequently, ultrastable cycling stabilities are achieved in both symmetric cells (>2000 h) and Li/LiFePO4 full cells (>400 cycles;average CE of 99.86%). These findings not only exploit dendrite recovery functionality by using LM-based gradient electrolytes but also highlight the potential of incorporating gradient designs in various battery systems. © 2025 American chemical Society.

关键词： Lithium batteries

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Electrochemical CO_(2) reduction with ionic liquids: review and evaluation

Industrial Chemistry & Materials

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Industrial Chemistry & Materials 2023年第3期1卷 410-430页

作者： Yangshuo Li Fangfang Li Aatto Laaksonen Chuan Wang Paul Cobden Per Boden Yanrong Liu Xiangping Zhang Xiaoyan Ji Energy Engineering Division of Energy ScienceLulea University of TechnologyLuleå97187Sweden Department of Materials and Environmental Chemistry Arrhenius LaboratoryStockholm University10691 StockholmSweden Centre of Advanced Research in Bionanoconjugates and Biopolymers Petru Poni Institute of Macromolecular ChemistryAleea Grigore Ghica-Voda41A700487 IasiRomania State Key Laboratory of Materials-Oriented and Chemical Engineering Nanjing Tech UniversityNanjing210009P.R.China University of Cagliari Department of Chemical and Geological SciencesCampus MonserratoSS 554 bivio per Sestu09042MonserratoItaly Metallurgy Department Swerim AB97125LuleåSweden SMA Mineral AB 68227FilipstadSweden CAS Key Laboratory of Green Process and Engineering Beijing Key Laboratory of Ionic Liquids Clean ProcessState Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China

The increasing CO_(2) emission,as the chief culprit causing numerous environmental problems,could be addressed by the electrochemical CO_(2) reduction(CO_(2)R)to the added-value carbon-based *** liquids(ILs)as electrolytes and co-catalysts have been widely studied to promote CO_(2)R owing to their unique *** the potential products of CO_(2)R,those only containing one carbon atom,named C1 products,including CO,CH_(3)OH,CH_(4),and syngas,are easier to achieve than *** this study,we first summarized the research status on CO_(2)R to these C1 products,and then,the state-of-theart experimental results were used to evaluate the economic potential and environmental *** the rapid development in CO_(2)R,future scenarios with better CO_(2)R performances were reasonably assumed to predict the future business for each *** the studied C1 products,the research focuses on CO,where satisfactory results have been *** evaluation shows that producing CO via CO_(2)R is the only profitable route at ***3OH and syngas of H2/CO(1:1)as the targeted products can become profitable in the foreseen *** addition,the life cycle assessment(LCA)was used to evaluate the environmental impact,showing that CO_(2)R to CH4 is the most environmentally friendly pathway,followed by the syngas of H_(2)/CO(2:1)and CO,and the further improvement of the CO_(2)R performance can make all the studied C1 products more environmentally ***,CO is the most promising product from both economic and environmental impact aspects.

关键词： Electrochemical-CO_(2)-reduction Ionic-liquids C1-product Economic-evaluation Environmental-impact

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Influence of conformational change of chain unit on the intrinsic negative thermal expansion of polymers

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Chinese chemical Letters 2021年第4期32卷 1515-1518页

作者： Qiangsheng Sun Ke Jin Yuhui Huang Jia Guo Thanyada Rungrotmongkol Phornphimon Maitarad Changchun Wang State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science Fudan UniversityShanghai 200433.China Biocatalyst and Environmental Biotechnology Research Unit Department of BiochemistryFaculty of Science and Program in Bioinformatics and Computational BiologyGraduate SchoolChulalongkom UniversityBangkok 10330Thailand Research Center of Nano Science and Technology Shanghai UniversityShanghai 200444China

Negative thermal expansion(NTE) behavior has roused wide interest for the control of thermomechanical properties of functional *** NTE behaviors have been found in kinds of compounds,it remains challenging for polymers to achieve intrinsic NTE *** this work,we systematically studied the conformational change of dibenzocyclooctadiene(DBCOD) derivatives between chair(C) and twist-boat(TB) forms based on density-functional theo ry(DFT) calculations,and found clear evidence of the relationship between the structure of DBCOD units and the thermal contraction behavior of the related *** order to obtain the polymer with NTE property,two conditions should be met for the thermal contracting DBCOD related units as follows:(i) the TB conformation can turn into C conformation as the temperature increases,and(ii) the volume of C conformation is smaller than that of TB *** rule should offer a guidance to exploration of the new intrinsic NTE polymers in the future.

关键词： Negative thermal expansion Conformational change Polyarylamides Density-functional theory Dibenzocyclooctadiene

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