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Boosted lithium storage performance by local build-in electric field derived by oxygen vacancies in 3D holey N-doped carbon structure decorated with molybdenum dioxide

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Journal of Materials science & Technology 2023年第11期142卷 185-195页

作者： Chuanxin Hou Wenyue Yang Hideo Kimura Xiubo Xie Xiaoyu Zhang Xueqin Sun Zhipeng Yu Xiaoyang Yang Yuping Zhang Bin Wang Ben Bin Xu Deepak Sridhar Hassan Algadi Zhanhu Guo Wei Du School of Environmental and Material Engineering Yantai UniversityYantai 264005China Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing Yantai 264005China Department of Chemical&Biomolecular Engineering University of TennesseeKnoxvilleTN 37996USA College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle Upon Tyne NE18STUK Zentek Ltd. 24 Corporate CourtGuelphON N1G 5G5Canada Department of Electrical Engineering Faculty of EngineeringNajran UniversityNajran 11001Saudi Arabia Integrated Composites Laboratory(ICL) Mechanical and Construction EngineeringFaculty of Engineering and EnvironmentNorthumbria UniversityNewcastle Upon TyneNE18STUK

Three-dimensional holey nitrogen-doped carbon matrixes decorated with molybdenum dioxide(MoO_(2))nanoparticles have been successfully synthesized via a NaCl-assisted template *** obtained MoO_(2)/C composites offered multi-advantages,including higher specific surface area,more active sites,more ions/electrons transmission channels,and shorter transmission path due to the synergistic effect of the uniformly distributed MoO_(2) nanoparticles and porous carbon ***,the oxygen vacancies were introduced into the prepared composites and enhanced the Li^(+)intercalation/deintercalation process during electrochemical cycling by the Coulomb *** existence of the local built-in electric field was proved by experimental data,differential charge density distribution,and density of states *** uniquely designed structure and introduced oxygen vacancy defects endowed the MoO_(2)/C composites with excellent electrochemical *** view of the synergistic effect of the uniquely designed morphology and introduced oxygen vacancy defects,the MoO_(2)/C composites exhibited superior electrochemical performance of a high capacity of 918.2 mAh g^(-1) at 0.1 A g^(-1) after 130 cycles,562.1 mAh g^(-1) at 1.0 A g^(-1) after 1000 cycles,and a capacity of 181.25 mAh g^(-1) even at 20.0 A g^(-1).This strategy highlights the path to promote the commercial application of MoO_(2)-based and other transition metal oxide electrodes for energy storage devices.

关键词： MoO_(2)/C hybrid 3D holey structure Oxygen vacancies Lithium-ion batteries

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Dramatic Difference Between Cu_(20)H_(8)and Cu_(20)H_(9)Clusters in Catalysis

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CCS Chemistry 2024年第6期6卷 1581-1590页

作者： Chun-Yu Liu Tong-Yu Liu Zong-Jie Guan Song Wang Yuan-Yuan Dong Feng Hu De-en Jiang Quan-Ming Wang Department of Chemistry Engineering Research Center of Advanced Rare Earth Materials(Ministry of Education)Tsinghua UniversityBeijing 100084 Jiangsu Engineering Research Centre for Digital Textile Inkjet Printing Key Laboratory of Eco-Textile Jiangnan UniversityMinistry of EducationWuxiJiangsu 214122 Department of Chemical and Biomolecular Engineering Vanderbilt UniversityNashvilleTennessee 37235 Department of Chemistry Vanderbilt UniversityNashvilleTennessee 37235 College of Chemistry and Chemical Engineering Hunan UniversityChangsha 410082 Hefei National Research Center for Physical Sciences at the Microscale School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefeiAnhui 230026

Sensitivity to structure and composition is very challenging to establish in nanocatalysis due to inadequate definition of structures that are very close in *** synthesized a pair of atomically precise copper clusters that are very close in composition,[Cu_(20)H_(9)(Tf-dpf)_(10)]·BF4(Cu_(20)H_(9))and[Cu_(20)H_(8)(Tf-dpf)_(10)]·(BF_(4))_(2)(Cu_(20)H_(8)),by using a pyridyl-functionalized flexible amidinate ligand,N,N′-di(5-trifluoromethyl-2-pyridyl)*** one-hydride difference in their composition leads to significant variation in geometric and electronic structures and,consequently,distinctly different optical and catalytic ***_(20)H_(8)exhibits 25 times higher catalytic activity than Cu_(20)H_(9)(96.7%vs 3.7%in yield)in the selective hydrogenation of anα,β-unsaturated aldehyde(cinnamaldehyde)to saturated aldehyde(3-phenylpropanal).Electrospray ionization mass spectrometry combined with density functional theory calculations reveal that the greater ease of dissociation of one Tf-dpf ligand compared to Cu_(20)H_(8)is the key to its higher *** work demonstrates a clear case of structure and composition sensitivity in nanocatalysis and that one hydride,out of∼330 atoms in the nanoclusters,can make a huge difference in the catalytic *** insights will be useful in the design and synthesis of atomically precise nanocatalysts.

关键词： copper cluster hydride amidinate ligand structural transformation hydrogenation catalysis

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Enhancing photocatalytic CO_(2)reduction with TiO_(2)-based materials:Strategies,mechanisms,challenges,and perspectives

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Environmental science and Ecotechnology 2024年第4期20卷 18-33页

作者： Zhimin Yuan Xianglin Zhu Xianqiang Gao Changhua An Zheng Wang Cheng Zuo Dionysios D.Dionysiou Hong He Zaiyong Jiang School of Chemistry&Chemical Engineering and Environmental Engineering Weifang UniversityWeifang261061PR China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085PR China Institute for Energy Research School of Chemistry and Chemical EngineeringJiangsu UniversityZhenjiang212013PR China Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion School of Chemistry and Chemical EngineeringTianjin University of TechnologyTianjin300384PR China Environmental Engineering and Science Program Department of Chemical and Environmental Engineering(DChEE)University of CincinnatiCincinnatiOH45221-0012USA College of Forestry Shandong Agricultural UniversityTaian271018PR China

The concentration of atmospheric CO_(2)has exceeded 400 ppm,surpassing its natural variability and raising concerns about uncontrollable shifts in the carbon cycle,leading to significant climate and environmental impacts.A promising method to balance carbon levels and mitigate atmospheric CO_(2)rise is through photocatalytic CO_(2)*** dioxide(TiO_(2)),renowned for its affordability,stability,availability,and eco-friendliness,stands out as an exemplary catalyst in photocatalytic CO_(2)*** strategies have been proposed to modify TiO_(2)for photocatalytic CO_(2)reduction and improve catalytic activity and product ***,few studies have systematically summarized these strategies and analyzed their advantages,disadvantages,and current ***,we comprehensively review recent advancements in TiO_(2)engineering,focusing on crystal engineering,interface design,and reactive site construction to enhance photocatalytic efficiency and product *** discuss how modifications in TiO_(2)'s optical characteristics,carrier migration,and active site design have led to varied and selective CO_(2)reduction *** enhancements are thoroughly analyzed through experimental data and theoretical ***,we identify current challenges and suggest future research directions,emphasizing the role of TiO_(2)-based materials in understanding photocatalytic CO_(2)reduction mechanisms and in designing effective *** review is expected to contribute to the global pursuit of carbon neutrality by providing foundational insights into the mechanisms of photocatalytic CO_(2)reduction with TiO_(2)-based materials and guiding the development of efficient photocatalysts.

关键词： summarized dioxide neutral

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Enhancing compatibility and biodegradability of polylactic acid/biomass composites through torrefaction of forest residue

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Journal of Bioresources and Bioproducts 2025年第1期10卷 51-61页

作者： June-Ho Choi Myeong Rok Ahn Chae-Hwi Yoon Yeon-Su Lim Jong Ryeol Kim Hyolin Seong Chan-Duck Jung Sang-Mook You Jonghwa Kim Younghoon Kim Hyun Gil Cha Jae-Won Lee Hoyong Kim Center for Bio-based Chemistry Korea Research Institute of Chemical Technology(KRICT)Ulsan 44429South Korea Department of Wood Science and Engineering College of Agriculture and Life SciencesChonnam National UniversityGwangju 61186South Korea Interdisciplinary Program in IT-Bio Convergence System Chonnam National UniversityGwangju 61186South Korea

This study investigated the effects of torrefaction on forest residue(FR)and its subsequent ap-plication as a bulk-loading filler in polylactic acid(PLA)*** enhanced the chemical properties of FR,improving its compatibility with PLA,and the crystallinity increased from 24.9%to 42.5%.The process also improved the hydrophobicity of PLA/biomass composites,as demonstrated by the water contact angle of 76.1°,closely matching that of neat PLA(76.4°).With the introduction of 20%modified biomass properties after torrefaction treatment,the tensile strength of PLA/biomass composite increased from 58.7 to 62.3 ***,the addition of torrefied forest residue(TFR)accelerated biodegradation by increasing the onset of degrada-tion and inhibiting *** 90 d,the biodegradability of PLA/biomass composites reached 94.9%,which had a 6.9%increase compared to the neat PLA(88.8%).Overall,this study highlights the potential of torrefaction in enhancing both the physical properties and biodegrad-ability of PLA-based composites,contributing to a more sustainable approach to reducing plastic pollution.

关键词： Forest residue Torrefaction Bulk-loading filler Polylactic acid composite Hydrophobicity Tensile strength Biodegradability

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Electrolyte/Electrode Interfaces in All‑Solid‑State Lithium Batteries:A Review

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Electrochemical Energy Reviews 2021年第2期4卷 169-193页

作者： Yuepeng Pang Jinyu Pan Junhe Yang Shiyou Zheng Chunsheng Wang School of Materials Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093China Department of Chemical and Biomolecular Engineering University of MarylandCollege ParkMD 20742USA

All-solid-state lithium batteries are promising next-generation energy storage devices that have gained increasing attention in the past decades due to their huge potential towards higher energy density and *** a key component,solid electrolytes have also attracted significant attention and have experienced major breakthroughs,especially in terms of Li-ion ***,the poor electrode compatibility of solid electrolytes can lead to the degradation of electrolyte/electrode interfaces,which is the major cause for failure in all-solid-state lithium *** address this,this review will summarize the indepth understanding of physical and chemical interactions between electrolytes and electrodes with a focus on the contact,charge transfer and Li dendrite formation occurring at electrolyte/electrode *** on mechanistic analyses,this review will also briefly present corresponding strategies to enhance electrolyte/electrode interfaces through compositional modifications and structural ***,the comprehensive insights into electrolyte/electrode interfaces provided by this review can guide the future investigation of all-solid-state lithium batteries.

关键词： electrolyte electrode lithium

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NGenE 2022: Electrochemistry for Decarbonization

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ACS ENERGY LETTERS 2023年第1期8卷 740-747页

作者： Cabana, Jordi Alaan, Thomas Crabtree, George W. Huang, Po-Wei Jain, Akash Murphy, Megan N'Diaye, Jeanne Ojha, Kasinath Agbeworvi, George Bergstrom, Helen Gersib, Simon Harb, Hassan Stejer, Adrien Quiles-Galarza, Genesis Rodriguez, Oliver Caruso, Isabella Goncalves, Josue M. Chen, Grace Y. Fernandez, Carlos A. Pan, Hanqing Ritter, Kabian Yang, Yingjie Zhang, Haozhe Garcia-Alvarez, Ana Cristina Ilic, Stefan Kumar, Khagesh Silcox, Rachel Yao, Yu Song, Hakhyeon Stoyanov, Stoyan Saraf, Mohit Chen, Celine H. Subasinghe, S. M. Supundrika Gomes, Reginaldo Lang, Shuangyan Murphy, Eamonn Thind, Arashdeep Singh Zheng, Yu Department of Chemistry University of Illinois at Chicago Chicago Illinois 60607 United States Department of Physics University of Illinois at Chicago Chicago Illinois 60607 United States Joint Center for Energy Storage Research Argonne National Laboratory Lemont Illinois 60439 United States School of Chemical & Biomolecular Engineering Georgia Institute of Technology Atlanta Georgia 30332 United States Materials Science Division Argonne National Laboratory Lemont Illinois 60439 United States Department of Chemistry Beckman Institute for Advanced Science University of Illinois at Urbana−Champaign Urbana−Champaign Urbana Illinois 61801 United States Department of Chemistry and Biochemistry University of Oregon Eugene Oregon 97403-1253 United States Department of Chemistry Texas A&M University College Station Texas 77843-3255 United States Department of Chemical and Biomolecular Engineering University of California Berkeley California 94720 United States Department of Chemical and Biomolecular Engineering University of California Irvine California 92697 United States Department of Chemical and Biomolecular Engineering University of Pennsylvania Philadelphia Pennsylvania 19104 United States Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge Massachusetts 02139 United States Department of Mechanical and Industrial Engineering University of Illinois at Chicago Chicago Illinois 60607 United States Division of Chemistry and Chemical Engineering California Institute of Technology Pasadena California 91125 United States George W. Woodruff School of Mechanical Engineering Georgia Institute of Technology Atlanta Georgia 30332 United States Department of Chemistry University of Nevada Reno Nevada 89557 United States Department of Chemistry University of California Davis Davis California 95616 United States Pritzker School of Molecular Engineering The University of Chicago Chicago Illinois 60637 United State

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Baiting bacteria with amino acidic and peptidic corona coated defect-engineered antimicrobial nanoclusters for optimized wound healing

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Bioactive Materials 2024年第12期42卷 628-643页

作者： Maonan Wang Houjuan Zhu Yuling Xue Yanxia Duan Hua Tian Qi Liu Yuzhu Zhang Zibiao Li Xian Jun Loh Enyi Ye Gang Yin Xuemei Wang Xianguang Ding David Tai Leong Department of Chemical and Biomolecular Engineering Faculty of EngineeringNational University of SingaporeSingapore117585Singapore Department of Pathology Xiangya HospitalSchool of Basic Medical SciencesCentral South UniversityChangshaChina Institute of Materials Research and Engineering(IMRE) Agency for ScienceTechnology and Research(A*STAR)2 Fusionopolis WayInnovis#08-03Singapore138634Singapore State Key Laboratory of Bioelectronics(Chien-Shiung Wu Lab) School of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China Key Laboratory for Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Nanjing University of Posts&TelecommunicationsNanjing210023China

Keeping steps ahead of the bacteria in the race for more efficacious antibacterial strategies is increasingly difficult with the advent of bacterial resistance ***,we engineered copper sulfide nanoclusters(CuS_(x) NCs)with variable sulfur defects for enhanced dual-treatment of bacterial infections by manipulating photothermal effects and Fenton-like ***,by encasing CuS_(x) NCs with a complex mixture of amino acids and short peptides derived from Luria-Bertani bacterial culture media as a protein corona,we managed to coax *** to take up these CuS_(x) *** a whole,Amino-Pep-CuS_(x) NCs was perceived as a food source and actively consumed by bacteria,enhancing their effective uptake by at least 1.5-fold greater than full length BSA protein BSA-corona CuS_(x) *** strategically using defect-engineering,we successfully fine-tune photothermal effect and Fenton-like capacity of CuS_(x) *** sulfur defects lead to reduced but sufficient heat generation under solar-light irradiation and increased production of toxic hydroxyl *** fine-tuning sulfur defects during synthesis,we achieve CuS_(x) NCs with an optimal synergistic effect,significantly enhancing their bactericidal *** ultra-small and biodegradable CuS_(x) NCs can rapidly break down after treatment for ***,Amino-Pep-CuS_(x) NCs demonstrate effective eradication of bacteria both in vitro and in vivo because of their relatively high uptake,optimal balanced photothermal and chemodynamic *** study offers a straightforward and efficient method to enhance bacterial uptake of next generation of antibacterial agents.

关键词： Defect-engineered Photothermal effect Chemodynamic effect Copper sulfide nanoclusters Protein corona

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Quasi-homogeneous photoelectrochemical organic transformations for tunable products and 100%conversion ratio

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science Bulletin 2024年第21期69卷 3395-3403页

作者： Cheng Lin Yuan Lu Jiaming Miao Zhongyuan Ma Youngmoon Choi Yan Yang Chaoran Dong Jinyou Shen Jong Hyeok Park Kan Zhang School of Materials Science and Engineering Nanjing University of Science and TechnologyNanjing 210094China Department of Chemical and Biomolecular Engineering Yonsei UniversitySeoul 120-749Republic of Korea Key Laboratory of Environmental Remediation and Ecological Health Ministry of Industry and Information TechnologySchool of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing 210094China

Photoelectrochemical(PEC)organic transformation at the anode coupled with cathodic H_(2) generation is a potentially rewarding strategy for efﬁcient solar energy ***,achieving the full conversion of organic substrates with exceptional product selectivity remains a formidable hurdle in the context of heterogeneous catalysis at the solid/liquid ***,we put forward a quasi-homogeneous catalysis concept by using the reactive oxygen species(ROS),such as·OH,H_(2)O_(2) and SO_(4)^(2-),as a charge transfer mediator instead of direct heterogeneous catalysis at the solid/liquid *** the context of glycerol oxidation,all ROS exhibited a preference forﬁrst-order reaction *** ROS,however,showcased distinct oxidation mechanisms,offering a range of advantages such as100%conversion ratios and theﬂexibility to tune the resulting *** oxidative formic acid with Faradaic efﬁciency(FE)of 81.2%was realized by the H_(2)O_(2) and·OH,while SO_(4)^(2-)was preferably for glycerol conversion to C3 products like glyceraldehyde and dihydroxyacetone with a total FE of about 80%.Strikingly,the oxidative coupling of methane to ethanol was successfully achieved in our quasi-homogeneous system,yielding a remarkable production rate of 12.27 lmol h^(-1) and an impressive selectivity of 92.7%.This study is anticipated to pave the way for novel approaches in steering solar-driven organic conversions by manipulating ROS to attain desired products and conversion ratios.

关键词： Reactive oxygen species Homogeneous catalysis Photoelectrochemical organic transformations Glycerol oxidation Methane oxidation

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Bibliometric Analysis of Trends and Directions in Machine Learning Applied to FinTech 4

Bibliometric Analysis of Trends and Directions in Machine Le...

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4th International Conference on Electronic and Electrical engineering and Intelligent System, ICE3IS 2024

作者： Arif, Erman Suherman, Suherman Widodo, Aris Puji Doctoral Program of Information System School of Postgraduate Studies Diponegoro University Semarang Indonesia Diponegoro University Faculty of Engineering Department of Chemical Engineering Semarang Indonesia Diponegoro University Faculty of Science and Mathematics Department of Informatics Semarang Indonesia

ISBN: (纸本)9798350378368

Our article presents a comprehensive analysis of trends and directions in the application of machine learning in the FinTech sector. By utilizing data from academic databases such as Scopus, our objective is to showcase the advancements in this interdisciplinary research area. The study identifies key trends, influential authors, leading journals, and significant collaborative networks that shape the field. The methodology employed involves quantitative bibliometric analysis to evaluate publications from the past five years. The results indicate a substantial increase in the number of studies during this period, highlighting the importance of machine learning in addressing critical financial challenges, including fraud detection, algorithmic trading, credit scoring, and risk management. Additionally, we delve into the main themes, countries, and institutions that dominate the current research agenda. This analysis provides valuable insights into the present state and future direction of machine learning in FinTech, serving as a resource for researchers and practitioners seeking to comprehend and contribute to this dynamic and rapidly evolving field. We also discuss implications for future research, emphasizing the necessity for continuous innovation and interdisciplinary collaboration to maximize the potential of machine learning in transforming financial services. © 2024 IEEE.

关键词： Adversarial machine learning

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Fabricating 3-dimensional human brown adipose microtissues for transplantation studies

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Bioactive Materials 2023年第4期22卷 518-534页

作者： Ou Wang Li Han Haishuang Lin Mingmei Tian Shuyang Zhang Bin Duan Soonkyu Chung Chi Zhang Xiaojun Lian Yong Wang Yuguo Lei Department of Chemical and Biomolecular Engineering University of Nebraska-LincolnNEUSA Biomedical Engineering Program University of Nebraska-LincolnNEUSA Department of Biomedical Engineering Pennsylvania State UniversityPAUSA China Novartis Institutes for BioMedical Research Co. Ltd.BeijingChina Department of Chemistry University of Nebraska-LincolnNEUSA Mary&Dick Holland Regenerative Medicine Program and Division of Cardiology Department of Internal MedicineUniversity of Nebraska Medical CenterOmahaNEUSA Department of Nutrition University of MassachusettsAmherstMAUSA School of Biological Science University of Nebraska-LincolnNEUSA Huck Institutes of the Life Sciences Pennsylvania State UniversityPAUSA

Transplanting cell cultured brown adipocytes(BAs)represents a promising approach to prevent and treat obesity(OB)and its associated metabolic disorders,including type 2 diabetes mellitus(T2DM).However,transplanted BAs have a very low survival rate in *** enzymatic dissociation during the harvest of fully differentiated BAs also loses significant *** is a critical need for novel methods that can avoid cell death during cell preparation,transplantation,and in ***,we reported that preparing BAs as injectable microtissues could overcome the *** found that 3D culture promoted BA differentiation and UCP-1 expression,and the optimal initial cell aggregate size was 100μ*** microtissues could be produced at large scales via 3D suspension assisted with a PEG hydrogel and could be *** microtissues could survive in vivo for long *** alleviated body weight and fat gain and improved glucose tolerance and insulin sensitivity in high-fat diet(HFD)-induced OB and T2DM *** microtissues impacted multiple organs,secreted protein factors,and influenced the secretion of endogenous *** our best knowledge,this is the first report on fabricating human BA microtissues and showing their safety and efficacy in T2DM *** proposal of transplanting fabricated BA microtissues,the microtissue fabrication method,and the demonstration of efficacy in T2DM mice are all *** results show that engineered 3D human BA microtissues have considerable advantages in product scalability,storage,purity,safety,dosage,survival,and efficacy.

关键词： Brown adipocyte Microtissue Transplantation Obesity Type 2 diabetes

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