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Settling and spreading behaviour of particle clusters in quiescent liquids in confined vessels

Particuology 2023年第12期83卷 91-100页

作者： Sayan Pal Amol A.Kulkarni Chemical Engineering&Process Development Division CSIR-National Chemical LaboratoryPune411008India Academy of Scientific and Innovative Research(AcSIR) Ghaziabad 201002India University College London Torrington PlaceLondonWC1E 7JEUK

Here we report experiments on particle cluster settling at high Reynolds number in quiescent liquid contained in a *** particles were observed to spread at the vessel bottom surface in a near-circular annular shape after settling irrespective of the shape of the vessel cross-section and particle shape,size,and *** of different parameters such as mass,type and aspect ratio of the particles,height,and viscosity of liquid was investigated on spreading *** of the hemispherical bottom cap of the cluster that bounces upon hitting the vessel bottom surface was found to be responsible for the final circular annular shape of the settled *** leakage from the cluster was seen in the form of a *** the liquid having viscosity beyond 100 cP,cluster breakage was observed that resulted in hindered settling and asymmetric shapes of finally settled *** observations are useful to understand the overall area over which settling and spreading of such clusters can be observed.

关键词： Particle cluster Temporal evolution Settling Spreading

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Interfacial B-O bonding modulated S-scheme B-doped N-deficient C_(3)N_(4)/O-doped-C_(3)N_(5) for efficient photocatalytic overall water splitting

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Chinese chemical Letters 2025年第1期36卷 355-361页

作者： Entian Cui Yulian Lu Zhaoxia Li Zhilei Chen Chengyan Ge Jizhou Jiang Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of TechnologyYancheng 224051China School of Environmental Ecology and Biological Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205China

Photocatalytic overall pure water splitting is a promising method for generating green hydrogen energy under mild ***,this process is often hindered by sluggish electron-hole separation and *** address this,a step-scheme(S-scheme)B-doped N-deficient C_(3)N_(4)/O-doped C_(3)N_(5)(BN-C_(3)N_(4)/O-C_(3)N_(5))heterojunction with interfacial B-O bonds has been *** Pt and Co(OH)_(2) as co-catalysts,BN-C_(3)N_(4)/O-C_(3)N_(5) S-scheme heterojunction demonstrates significantly enhanced photocatalytic activity for overall pure water splitting under visible light,achieving H_(2) and O_(2) evolution rates of 40.12 and 19.62μmol/h,*** characterizations and experiments revealed the performance-enhancing effects of the enhanced built-in electric field and the interfacial B-O ***,the strengthened built-in electric field provides sufficient force for rapid interfacial electron ***,by reducing the transport energy barrier and transfer distance,the interfacial B-O bonds facilitate rapid recombination of electrons and holes with relatively low redox potential via the S-scheme charge-transfer route,leaving the high-potential electrons and holes available for H^(+)reduction and OH^(-)oxidation ***,the photocatalytic efficiency of BN-C_(3)N_(4)/O-C_(3)N_(5) S-scheme heterojunction was significantly improved,making it a promising approach for green hydrogen production through overall pure water splitting.

关键词： Interfacial B-O bonds BN-C_(3)N_(4) O-C_(3)N_(5) S-scheme heterojunction Water splitting

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Carbonitride MXene Ti_(3)CN(OH)_(x)@MoS_(2)hybrids as efficient electrocatalyst for enhanced hydrogen evolution

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Nano research 2023年第4期16卷 4656-4663页

作者： Jizhou Jiang Fangyi Li Saishuai Bai Yongjing Wang Kun Xiang Haitao Wang Jing Zou Jyh-Ping Hsu School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationNovel Catalytic Materials of Hubei Engineering Research CenterWuhan Institute of TechnologyWuhan 430205China Department of Chemical Engineering “National Taiwan University”Taipei 10617

Renewable energy powered electrocatalytic water splitting is a promising strategy for hydrogen generation,and the design and development of high-efficiency and earth-abundant electrocatalysts for hydrogen evolution reaction(HER)are highly ***,MoS2 nanoflowers decorated two-dimensional carbonitride-based MXene Ti3CN(OH)x hybrids have been constructed by etching and post-hydrothermal *** electrochemical performance of the as-obtained Ti_(3)CN(OH)_(x)@MoS_(2)hybrids having a quasi core-shell structure is fascinating:An overpotential of 120 mV and a Tafel slope of 64 mV∙dec^(−1)can be delivered at a current density of 10 mA∙cm^(−2).And after 3,000 cyclic voltammetry cycles,it can be seen that there is no apparent *** the experimental results and density functional theory(DFT)calculations indicate that the synergetic effects between Ti_(3)CN(OH)x and MoS_(2)are responsible for the robust electrochemical HER *** electrons of-OH group in Ti_(3)CN(OH)x are transferred to MoS_(2),making the adsorption energy of the composite for H almost *** metallic Ti_(3)CN(OH)x is also beneficial to the fast charge transfer *** construction of MXene-based hybrids with optimal electronic structure and unique morphology tailored to the applications can be further used in other promising energy storage and conversion devices.

关键词： Ti_(3)CN(OH)x MoS_(2) hydrogen evolution reaction density functional theory(DFT)calculations

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Single-atom catalysis for organic reactions

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Chinese chemical Letters 2023年第6期34卷 121-129页

作者： Hanyu Hu Jiangbo Xi Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry Key Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationHubei Key Laboratory of Novel Reactor and Green Chemical TechnologySchool of Chemistry and Environmental EngineeringWuhan Institute of TechnologyWuhan 430205China

Metal-based catalysis,including homogeneous and heterogeneous catalysis,plays a significant role in the modern chemical *** catalysis is widely used due to the high efficiency,easy catalyst separation and ***,the metal-utilization efficiency for conventional heterogeneous catalysts needs further improvement compared to homogeneous *** tackle this,the pursing of heterogenizing homogeneous catalysts has always been attractive but *** a recently emerging class of catalytic material,single-atom catalysts(SACs)are expected to bridge homogeneous and heterogeneous catalytic process in organic reactions and have arguably become the most active new frontier in catalysis *** this review,a brief introduction and development history of single-atom catalysis and SACs involved organic reactions are *** addition,recent advances in SACs and their practical applications in organic reactions such as oxidation,reduction,addition,coupling reaction,and other organic reactions are thoroughly *** understand structure-property relationships of single-atom catalysis in organic reactions,active sites or coordination structure,metal atom-utilization efficiency(e.g.,turnover frequency,TOF calculated based on active metal)and catalytic performance(e.g.,conversion and selectivity)of SACs are comprehensively ***,the application limitations,development trends,future challenges and perspective of SAC for organic reaction are discussed.

关键词： Single-atom catalysis Active site Metal utilization Organic reaction Catalytic performance

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Tandem asymmetric propargylic amination/carboxylative cyclization reaction to chiral 5-methylidene-2-oxazolidinones using CO_(2) as C1 synthon

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Science China Chemistry 2025年第4期68卷 1402-1411页

作者： Zheng Zhang Zhi-Hao Zhang Ying Sun Yun-Hao Tang Yi-Zhuo Yang Feng Zhou Jian Zhou State Key Laboratory of Petroleum Molecular&Process Engineering Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesShanghai Engineering Research Center of Molecular Therapeutics and New Drug DevelopmentSchool of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai 200062China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China

We report a tandem asymmetric Cu-catalyzed propargylic amination(ACPA)/Ag-catalyzed carboxylative cyclization(SCC)with CO_(2) to 5-methylidene-2-oxazolidinones;even with tetrasubstituted *** varying pyridine bisoxazoline(PYBOX)ligands;a general and highly enantioselective ACPA of unprecedentedly broad scope of secondary propargylic acetates and primary amines is ***α-aryl andα-aliphatic propargylic acetates could react with either aromatic or aliphatic primary amines to give the corresponding N-aryl or N-aliphatic ethynylamines withα-aliphatic orα-aryl groups in over 90%ee for use in the next *** key to developing this one-pot sequence is to use a chelator triethylenetetramine(TETA)to mask the copper ion;to avoid its negative effect on Ag-catalyzed cyclization;whilst releasing PYBOX to activate the silver *** the methylidene moiety;these oxazolidinones can be readily *** value of the sequence is further shown by the catalytic enantioselective total synthesis of(–)-cytoxazone and the potent ezetimibe analogue.

关键词： CO_(2) 2-oxazolidinone tandem sequence propargylic amination carboxylative cyclization

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Unveiling the geometric site dependent activity of spinel Co_(3)O_(4)for electrocatalytic chlorine evolution reaction

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Journal of Energy Chemistry 2024年第5期92卷 95-103页

作者： Linke Cai Yao Liu Jingfang Zhang Qiqi Jia Jiacheng Guan Hongwei Sun Yu Yu Yi Huang Key Laboratory of Pesticide&Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of EducationCollege of ChemistryCentral China Normal UniversityWuhan 430079HubeiChina Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationHubei Key Laboratory of Novel Reactor and Green Chemical TechnologySchool of Chemical Engineering&PharmacyWuhan Institute of TechnologyWuhan 430205HubeiChina College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108FujianChina School of Chemistry and Chemical Engineering Anhui UniversityHefei 230601AnhuiChina

Spinel cobalt oxide(Co_(3)O_(4)),consisting of tetrahedral Co^(2+)(CoTd)and octahedral Co^(3+)(CoOh),is considered as promising earth-abundant electrocatalyst for chlorine evolution reaction(CER).Identifying the catalytic contribution of geometric Co site in the electrocatalytic CER plays a pivotal role to precisely modulate electronic configuration of active Co sites to boost ***,combining density functional theory calculations and experiment results assisted with operando analysis,we found that the Co_(Oh) site acts as the main active site for CER in spinel Co_(3)O_(4),which shows better Cl^(-)adsorption and more moderate intermediate adsorption toward CER than CoTd site,and does not undergo redox transition under CER condition at applied *** by above findings,the oxygen vacancies were further introduced into the Co_(3)O_(4) to precisely manipulate the electronic configuration of Co_(Oh) to boost Cl^(-)adsorption and optimize the reaction path of CER and thus to enhance the intrinsic CER activity *** work figures out the importance of geometric configuration dependent CER activity,shedding light on the rational design of advanced electrocatalysts from geometric configuration optimization at the atomic level.

关键词： Chlorine evolution reaction Geometry effects Active chlorine Electronic configuration optimization Spinel oxides

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Charge transfer interfaces across black phosphorus/Co,N Co-doped carbon heterojunction for enhanced electrocatalytic water splitting

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Journal of Materials Science & Technology 2024年第11期178卷 171-178页

作者： Jizhou Jiang Yongjing Wang Jing Wu Hao Wang Arramel Yilun Zou Jing Zou Haitao Wang School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationNovel Catalytic Materials of Hubei Engineering Research CenterWuhan Institute of TechnologyWuhan 430205China Key Laboratory of Rare Mineral Ministry of Natural ResourcesGeological Experimental Testing Center of Hubei ProvinceWuhan 430034China Nano Center Indonesia South TangerangBanten 15314Indonesia

The practicality of electrochemical water-splitting technology relies on the development of novel and efficient bifunctional electrocatalysts capable of facilitating both the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER).Black phosphorus(BP)holds tremendous promise for HER and OER electrocatalysis owing to its fully exposed atoms and high carrier ***,the elec-trocatalytic performance of BP is still much lower than the expected theoretical limit,presenting an exciting challenge for further ***,we embed electrochemically exfoliated few-layer BP nanosheets in higher Fermi level(EF)of cobalt,nitrogen co-doped carbons to form a new heterojunction(CoNC-BP),as efficient bifunctional electrocatalysts toward HER and OER for the advancement overall water splitting applications.A directed interfacial electron transfer is realized from CoNC to BP,facilitated by the lowering Fermi level(EF).This interfacial electron transfer plays a crucial role in optimizing the adsorption and desorption of active intermediates,while also introducing an abundance of hypervalent Co *** factors collectively contribute to the remarkable electrocatalytic activities of HER and OER performance,leading to the efficient performance of the developed CoNC-BP heterojunction in water-splitting *** work demonstrates a promising breakthrough that can inspire the design of high-efficiency catalysts.

关键词： Directional charge transfer Black phosphorus Co,N co-doped carbon Heterointerface Electrocatalytic water splitting

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Porous 3D carbon-based materials:An emerging platform for efficient hydrogen production

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Nano research 2023年第1期16卷 127-145页

作者： Fangyi Li Jizhou Jiang Jiamei Wang Jing Zou Wei Sun Haitao Wang Kun Xiang Pingxiu Wu Jyh-Ping Hsu School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205China Semiconductor Electronic Special Gas of Hubei Engineering Research Center Jingzhou 434000China Department of Chemical Engineering “National Taiwan University”Taipei 10617

Due to their unique properties and uninterrupted breakthrough in a myriad of clean energy-related applications,carbon-based materials have received great ***,the low selectivity and poor conductivity are two primary difficulties of traditional carbon-based materials(zero-dimensional(0D)/one-dimensional(1D)/two-dimensional(2D)),enerating inefficient hydrogen production and impeding the future commercialization of carbon-based *** improve hydrogen production,attempts are made to enlarge the surface area of porous three-dimensional(3D)carbon-based materials,achieve uniform interconnected porous channels,and enhance their stability,especially under extreme *** this review,the structural advantages and performance improvements of porous carbon nanotubes(CNTs),g-C_(3)N_(4),covalent organic frameworks(COFs),metal-organic frameworks(MOFs),MXenes,and biomass-derived carbon-based materials are firstly summarized,followed by discussing the mechanisms involved and assessing the performance of the main hydrogen production *** include,for example,photo/electrocatalytic hydrogen production,release from methanolysis of sodium borohydride,methane decomposition,and *** role that the active sites of porous carbon-based materials play in promoting charge transport,and enhancing electrical conductivity and stability,in a hydrogen production process is *** current challenges and future directions are also discussed to provide guidelines for the development of next-generation high-efficiency hydrogen 3D porous carbon-based materials prospected.

关键词： porous three-dimensional(3D)carbon-based materials hydrogen production advanced synthesis

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Investigating the influence of process parameters on the properties and refolding yield of single-chain variable fragment inclusion bodies

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Journal of Biotechnology 2025年 405卷 182-190页

作者： Elshazly, Mohamed Leeb, Benedikt Brichtova, Eva Prada Gisperg, Florian Klausser, Robert Vijayakumar, Shilpa Lendl, Bernhard Voigtmann, Martin Berkemeyer, Matthias Spadiut, Oliver Kopp, Julian Research Division Integrated Bioprocess Development Institute of Chemical Environmental and Bioscience Engineering Technische Universität Wien Gumpendorferstraße 1A Vienna1060 Austria Christian Doppler Laboratory for Inclusion Body Processing 4.0 Institute of Chemical Environmental and Bioscience Engineering Technische Universität Wien Gumpendorferstraße 1A Vienna1060 Austria Research Division of Environmental Analytics Process Analytics and Sensors Institute of Chemical Technologies and Analytics Technische Universität Wien Getreidemarkt 9 Vienna1060 Austria Boehringer Ingelheim RCV GmbH & Co KG Biopharma Austria Development Operations Analytical Development Vienna Austria

Ever since the potential of inclusion bodies (IBs) has been recognized, substantial advances have been made towards understanding IB processes and enabling efficient and controlled development strategies. Still, the influence of the chosen upstream processing (USP) strategy on the properties of inclusion bodies (IBs) and their refolding performance remains poorly understood. This work aims to target this challenge by investigating the influence of two chosen USP parameters, namely the specific substrate uptake rate and the temperature during induction, on IB titer, IB properties, namely IB purity, size and secondary protein structure of the IBs, as well as refolding yield of single-chain variable fragment M (scFvM) IBs. Contrary to findings in the literature, USP conditions neither had a statistically significant effect on the aforementioned IB properties nor on the refolding yield, but could clearly alter the IB titer. Our results provide detailed analytical insights on the independence of IB properties from USP conditions for this protein, while increasing the volumetric IB productivity proved feasible through variations in USP parameters. Therefore, titer maximization appears to be the sole optimization strategy for scFvM IBs and these findings may also apply to other target proteins with similar structural properties. © 2025 The Authors

关键词： Inclusion bodies Upstream process parameters Integrated bioprocess Multivariate data analysis Secondary protein structure Inclusion body properties

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MXenes/CNTs-based hybrids:Fabrications,mechanisms,and modification strategies for energy and environmental applications

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Nano research 2024年第5期17卷 3429-3454页

作者： Jizhou Jiang Fangyi Li Lei Ding Chengxun Zhang Arramel Xin Li School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationNovel Catalytic Materials of Hubei Engineering Research CenterWuhan Institute of TechnologyWuhan 430205China Nano Center Indonesia Jl.PUSPIPTEK Tangerang SelatanBanten 15314Indonesia Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642China

Emerging two-dimensional(2D)layered metal carbide and nitride materials,commonly termed MXenes,are increasingly recognized for their applications across diverse fields such as energy,environment,and *** the past few years,MXenes/carbon nanotubes(CNTs)-based hybrids have attracted extensive attention as an important catalyst in energy and environmental fields,due to their superior multifunctions and mechanical *** review aims to address the fabrication strategies,the identification of the enhancement mechanisms,and recent progress regarding the design and modification of MXenes/CNTs-based hybrids.A myriad of fabrication techniques have been systematically summarized,including mechanical mixing,spray drying,three-dimensional(3D)printing,self-assembly/in-situ growth,freeze drying,templating,hydrothermal methods,chemical vapor deposition(CVD),and ***,the identification of the enhancement mechanisms was thoroughly discussed from the two dimensions of theoretical simulations and in-situ ***,the recent advancements in profound applications of MXenes/CNTs-based hybrids have also been carefully revealed,including energy storage devices,sensors,water purification systems,and microwave *** also underscore anticipated challenges related to their fabrication,structure,underlying mechanisms,modification approaches,and emergent ***,this review offers insights into prospective directions and the future trajectory for these promising *** is expected that this review can inspire new ideas or provide new research methods for future studies.

关键词： MXenes/carbon nanotubes(CNTs)-based hybrids fabrication applications modification strategies

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