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Ultrathin Zincophilic Interphase Regulated Electric Double Layer Enabling Highly Stable Aqueous Zinc‑Ion Batteries

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Nano-Micro Letters 2024年第5期16卷 285-299页

作者： Yimei Chen Zhiping Deng Yongxiang Sun Yue Li Hao Zhang Ge Li hongbo zeng Xiaolei Wang Department of Chemical and Materials Engineering University of Alberta9211‑116 Street NWEdmontonAB T6G 1H9Canada Department of Mechanical Engineering University of Alberta9211‑116 Street NWEdmontonAB T6G 1H9Canada

The practical application of aqueous zinc-ion batteries for large-grid scale systems is still hindered by uncontrolled zinc dendrite and side reactions.Regulating the elec-trical double layer via the electrode/electrolyte interface layer is an effective strategy to improve the stability of Zn anodes.Herein,we report an ultrathin zincophilic ZnS layer as a model regu-lator.At a given cycling current,the cell with Zn@ZnS electrode displays a lower potential drop over the Helmholtz layer(stern layer)and a suppressed diffuse layer,indicating the regulated charge distribution and decreased electric double layer repulsion force.Boosted zinc adsorption sites are also expected as proved by the enhanced electric double-layer capacitance.Consequently,the symmetric cell with the ZnS protection layer can stably cycle for around 3,000 h at 1 mA cm^(-2) with a lower overpotential of 25 mV.When coupled with an I2/AC cathode,the cell demonstrates a high rate performance of 160 mAh g^(-1) at 0.1 A g^(-1) and long cycling stability of over 10,000 cycles at 10 A g^(-1).The Zn||MnO_(2) also sustains both high capacity and long cycling stability of 130 mAh g^(-1) after 1,200 cycles at 0.5 A g^(-1).

关键词： Zinc anode Electric double-layer regulation Multifunction SEI layer Inhibited side reactions and dendrite Rapid kinetics

Photo-thermal synergistic excitation:Feasible strategy to detect ethanol for wide bandgap ZIF-8at low work temperature

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Journal of Environmental Sciences 2024年第4期138卷 112-120页

作者： Shuhao Shi Qian Du Ming Hou Xiaolei Ye Li Yang Shenghui Guo Jianhong Yi Ullah Ehsan hongbo zeng State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Faculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093China Department of Chemical and Materials Engineering University of AlbertaEdmonton T6G 2V4Canada FEMTO-ST Institute(UMR CNRS 6174) Universite de Bourgogne Franche-Comte(UBFC)Universite de technologie de Belfort Montbéliard(UTBM)Site de MontbeliardBelfort F-90010France Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China

Zeolitic Imidazolate Framework-8(ZIF-8)material was prepared by chemical precipitation method.The microstructure and physical properties of the as-prepared samples were characterized by XRD,BET,FESEM and UV spectrophotometer.The self-made four-channel measurement device was used to test the gas sensitivity of ZIF-8 material toward ethanol gas under photo-thermal synergistic excitation.The results showed that the sample was typical ZIF-8(E_(g)=4.96 eV)with a regular dodecahedron shape and the specific surface is up to 1793 m^(2)/g.The as-prepared ZIF-8 has a gas response value of 55.04 to 100 ppm ethanol at 75℃ and it shows good gas sensing selectivity and repeated stability.The excellent gas sensitivity can be attributed to the increase of free electron concentration in the ZIF-8 conduction band by photo-thermal synergistic excitation,and the large specific surface area of ZIF-8 material provides more active sites for gas-solid surface reaction.The reaction mechanism of ZIF-8 material under multi-field excitation was also discussed.

关键词： ZIF-8 material Photo-thermal synergistic excitation UV-light irradiation Photon-generated electron and hole Gas-sensitive property

Spontaneous hierarchical surface engineering of minerals through coupled dissolution-precipitation chemistry

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Aggregate

Aggregate 2024年第1期5卷 460-472页

作者： Jinyang Jiang Jiawen Zhang Lanxin Wang Zeyu Lu Fengjuan Wang Zhiyong Liu hongbo zeng Jiangsu Key Laboratory of Construction Materials School of Materials Science and EngineeringSoutheast UniversityNanjingChinal 2Chemical and Materials EngineeringUniversity of AlbertaEdmontonAlbertaCanada

Peculiar hierarchical microstructures in creatures inspire modern material design with distinct functionalities.Creatures can effortlessly construct sophisticated yet long-range ordered microstructure across bio-membrane through ion secretion and precipitation.However,microstructure biomimicry in current technology generally requires elaborate,point-by-point fabrication.Herein,a spontaneous yet controllable strategy is developed to achieve surface microstructure engineering through a natural surface phenomenon similar to ion secretion-precipitation,that is,coupled dissolution-precipitation.A series of hierarchical microstructures on mineral surfaces in fluids with tunable morphology,orientation,dimension,and spatial distribution are achieved by simply controlling initial dissolution and fluid chemistry.In seawater,long-range ordered film of vertically aligned brucite flakes forms through interfacial dissolution,nucleation,and confinement-induced orientation of flakes with vertically grown{110}plane,on the edge of which,fusiform aragonite epitaxially precipitates.With negligible initial surface dissolution,prismatic aragonite epitaxially grows on a calcite polyhedron-packed surface.By tuning fluid chemistry,closely packed calcite polyhedron and loosely packed calcite micro-pillars are engineered through rapid and retarded precipitation,respectively.Surprisingly,the spontaneously grown microstructures resemble those deliberately created by human or found in nature,and tremendously modulate surface functionality.These findings open new possibilities for facile and customizable engineering of microstructural surfaces,hierarchical heterostructures,and biomimetic materials.

关键词： directional crystallization dissolution-precipitation chemistry hierarchical microstructures spontaneous growth surface engineering

Photocontrolled polymer adhesives facilitate the assembly of hydrogels for soft robotics

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Science China Chemistry 2024年

作者： Diling Yang Hao Zhang hongbo zeng School of Materials and Environmental Engineering Hunan University of Humanities Department of Chemical and Materials Engineering University of Alberta

Both Sun Wukong in eastern mythology and Transformers in western science fiction animation have profoundly inspired the design of deformable materials and modern robots. The application scope of intelligent materials, also known as smart materials, which are capable of responding to external stimuli to achieve shape changes, structural reorganization,and functional reconfiguration, is wide-ranging, and it covers areas such as soft robotics and flexible electronics [1–3], 4D printing [4,5], biomedical equipment [6, 7], sensing devices[8], and energy harvesting systems [9].

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Programmable shape memory polymers:Intermolecular and interfacial interaction mechanisms

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Science China Materials 2023年第11期66卷 4519-4520页

作者： Diling Yang Hao Zhang hongbo zeng Department of Chemical and Materials Engineering University of AlbertaEdmontonAlberta T6G 1H9Canada

Shape memory polymers(SMPs)have long been at the forefront of the field of stimulus-responsive shape-shifting polymers.SMPs possess a unique ability to recall and return to their original shapes after undergoing temporary deformations triggered by specific external stimuli,including heat,light,or changes in the surrounding environment,such as alterations in p H conditions^([1-4]).

关键词： interfacial shifting interaction

Mussel-Inspired Adhesive Hydrogels: Chemistry and Biomedical Applications

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Chinese Journal of Chemistry 2023年第24期41卷 3729-3738页

作者： Jingsi Chen Linbo Han Jifang Liu hongbo zeng Department of Chemical and Materials Engineering University of AlbertaEdmontonAlbertaT6G 1H9 Canada College of Health Science and Environmental Engineering Shenzhen Technology UniversityShenzhenGuangdong518118 China The Fifth Affiliated Hospital Guangzhou Medical UniversityGuangzhouGuangdong510700 China

Adhesive hydrogels are an emerging class of hydrogels that combine three-dimensional hydrated networks with adhesive properties.These properties facilitate intimate tissue-material contact in diverse biomedical applications,enhancing tissue joining,drug transport,and signal transmission.Inspired by the universal adhesiveness of mussel foot proteins,3,4-dihydroxyphenyl-L-alanine (DOPA) and its analogs have been extensively exploited for the fabrication of adhesive hydrogels,within which the DOPA moieties can not only serve as cross-linking mediators but also participate in various intermolecular and surface interactions to mediate wet adhesion.This mini-review highlights recent achievements in the development of mussel-inspired adhesive hydrogels,focusing on: (1) elucidating DOPA-mediated adhesion mechanisms through nanomechanical characterizations,(2) designing injectable adhesive hydrogels toward applications in drug delivery,hemostasis,and wound closure,which includes in situ gelling liquids and shear-thinning preformed hydrogels,and (3) fabricating tough adhesive hydrogels with enhanced mechanical properties for use in tissue regeneration,biosensing,and bioimaging,with typical examples of nanocomposite and double-network hydrogels.The challenges and prospects in this rapidly developing field are also discussed.

关键词： Hydrogels Adhesives Biomimetic synthesis Noncovalent Interactions Biomaterials

Editorial for the Special Issue on 10th Anniversary of Friction

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Friction 2022年第10期10卷 1439-1442页

作者： Jianbin LUO Yonggang MENG Zhongmin JIN hongbo zeng State Key Laboratory of Tribology in Advanced Equipment Tsinghua UniversityBeijing 100084China School of Mechanical Engineering Southwest Jiaotong UniversityChengdu 610031China School of Mechanical Engineering University of LeedsLeeds LS29JTUK Chemical and Materials Engineering University of AlbertaEdmonton Alberta T6G 2R3Canada

The year 2022 marks the 10th anniversary of the founding of Friction.Friction was launched on 26 March 2013,with an aim to promote the development in tribology by publishing theoretical and experimental research works as well as monographic review articles related to surface contact,friction,wear,lubrication,adhesion,and interface science.

关键词： friction wear founding

A CO_(2)/N_(2)-Responsive Pickering Emulsion Stabilized by Novel Switchable Surface-Active Alumina Nanoparticles

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Engineering 2022年第5期8卷 48-54页

作者： An Chen Duo Wang Jingsi Chen Jianhong Xu hongbo zeng State Key Laboratory of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Department of Chemical and Materials Engineering University of AlbertaEdmontonAB T6G 1H9Canada

This article reports the development of a novel switchable Pickering emulsion with rapid CO_(2)/N_(2) respon-siveness,which is stabilized using alumina nanoparticles hydrophobized in situ with a trace amount of a switchable superamphiphile via electrostatic interactions.With the introduction of CO_(2) for 30 s,the Pickering emulsion can be spontaneously demulsified with complete phase separation;the emulsion can then be reconstructed in response to N_(2) purging for 10 min followed by homogenization.Moreover,the stable Pickering emulsion can be stored for more than 60 days at room temperature with-out any visible change.The CO_(2)/N_(2)-responsive behavior of the switchable Pickering emulsion is attribu-ted to the reversible desorption/adsorption of the switchable surfactants on the surfaces of the alumina nanoparticles upon the alternative bubbling of CO_(2)or N_(2).Thanks to the simple fabrication of the surfac-tant and the hydrophobization of the alumina nanoparticles,this research has developed an extremely facile and cost-efficient method for preparing a rapidly CO_(2)/N_(2)-responsive switchable Pickering emul-sion.The dosage of the switchable surfactants has been significantly reduced by nearly 1500 times(from 150 to 0.1 mmol·L^(-1))as compared with the dosage used in previous studies.Moreover,the as-prepared CO_(2)/N_(2)-responsive switchable Pickering emulsion is environmentally friendly,mild,and nontoxic;thus,it holds great potential for practical applications with considerable economic and environmental benefits,such as oil transport,fossil fuel production,environmental gases detection,and the encapsulation and release of active ingredients.

关键词： CO_(2)/N_(2)responsive Pickering emulsion Switchable surfactant Alumina nanoparticles Superamphiphile

Alterations in nutrient digestion and utilization associated with different residual feed intake in Hu sheep

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Animal Nutrition 2023年第2期13卷 334-341页

作者： hongbo zeng Yuyang Yin Lingxi Chen Zhuoxin Xu Yang Luo Qian Wang Bin Yang Jiakun Wang Institute of Dairy Science College of Animal SciencesZhejiang UniversityHangzhou310058China b MoE Key Laboratory of Molecular Animal Nutrition Zhejiang UniversityHangzhou310058China School of Biological and Chemical Engineering Zhejiang University of Science and TechnologyHangzhou310023ZhejiangChina Huzhou Academy of Agricultural Sciences Huzhou313000China Hunan Institute of Animal and Veterinary Science Changsha410131China

Improving feed efficiency is crucial to the animal industry.Residual feed intake(RFI)is now regarded as an index of feed efficiency evaluation and is independent of growth characteristics.Our study aims to explore the alterations in growth performance and nutrient digestion in Hu sheep with different RFI phenotypes.Sixty-four male Hu sheep(body weight=24.39±1.12 kg;postnatal days=90±7.9)were selected for the study.After an evaluation period of 56 days and power analysis,samples were collected from 14 low RFI(L-RFI group,power=0.95)and 14 high RFI sheep(H-RFI group,power=0.95).The L-RFI sheep yielded a lower(P0.05).The acid detergent fiber,neutral detergent fiber,organic matter,and crude protein apparent digestibility were higher(P0.05)was found in urine N output(%of N intake)between the 2 groups.Furthermore,L-RFI sheep gave lower(P<0.05)serum glucose concentrations and higher(P<0.05)non-esterified fatty acid concentrations.Meanwhile,a lower ruminal acetate molar proportion(P<0.05)and higher propionate molar proportion(P<0.05)were observed in L-RFI sheep.In summary,these results revealed that despite having lower dry matter intake,L-RFI sheep possess higher nutrient digestibility,N retention,ruminal propionate production and serum glucose utilization,in order to meet energy demands.Selection for low RFI sheep could reduce feed costs,which in turn provides economic benefits to the sheep industry.

关键词： Residual feed intake Growth performance Apparent digestibility Nitrogen metabolism Rumen fermentation Sheep