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Unveiling the tailorable electrochemical properties of zeolitic imidazolate framework-derived Ni-doped LiCoO_(2) for lithium-ion batteries in half/full cells

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Journal of Energy Chemistry 2024年第6期93卷 229-242,I0006页

作者： Jian-En Zhou Yiqing Liu Zhijian Peng Quanyi Ye Hua Zhong Xiaoming Lin Ronghua Zeng Yongbo Wu Jiaye Ye Guangdong Provincial International Joint Research Center for Energy Storage Materials Key Laboratory of Theoretical Chemistry of EnvironmentMinistry of EducationSchool of ChemistrySouth China Normal UniversityGuangzhou 510006GuangdongChina School of Chemistry and Physics Faculty of ScienceQueensland University of TechnologyBrisbaneQLD 4001Australia Key Laboratory of Atomic and Subatomic Structure and Quantum Control(Ministry of Education) Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of MatterSchool of PhysicsSouth China Normal UniversityGuangzhou 510006GuangdongChina Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials Guangdong-Hong Kong Joint Laboratory of Quantum MatterSouth China Normal UniversityGuangzhou 510006GuangdongChina

As a prevailing cathode material of lithium-ion batteries(LIBs),LiCoO_(2)(LCO)still encounters the tricky problems of structural collapse,whose morphological engineering and cation doping are crucial for surmounting the mechanical strains and alleviating phase degradation upon cycling.Hereinafter,we propose a strategy using a zeolitic imidazolate framework(ZIF)as the self-sacrificing template to directionally prepare a series of LiNi_(0.1)Co_(0.9)O_(2)(LNCO)with tailorable electrochemical properties.The rational selection of sintering temperature imparts the superiority of the resultant products in lithium storage,during which the sample prepared at 700℃(LNCO-700)outperforms its counterparts in cyclability(156.8 mA h g^(-1)at 1 C for 200 cycles in half cells,1 C=275 mA g^(-1))and rate capability due to the expedited ion/electron transport and the strengthen mechanical robustness.The feasibility of proper Ni doping is also divulged by half/full cell tests and theoretical study,during which LNCO-700(167 mA h g^(-1)at 1 C for 100 cycles in full cells)surpasses LCO-700 in battery performance due to the mitigated phase deterioration,stabilized layered structu re,ameliorated electro nic co nductivity,a nd exalted lithium sto rage activity.This work systematically unveils tailorable electrochemical behaviors of LNCO to better direct their practical application.

关键词： Lithium-ion batteries zeolitic imidazolate framework LiNi_(0.1)Co_(0.9)O_(2) Electrochemical properties

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In-situ incorporation of halloysite nanotubes with 2D zeolitic imidazolate framework-L based membrane for dye/salt separation

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Chinese Journal of Chemical Engineering 2023年第6期58卷 103-111页

作者： Yafei Su Xuke Zhang Hui Li Donglai Peng Yatao Zhang School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Research Department of New Materials Zhengzhou Institute of Emerging Industrial TechnologyZhengzhou 450045China School of Material&Chemical Engineering Zhengzhou University of Light IndustryZhengzhou 450002China

Layered assembled membranes of 2D leaf-like zeolitic imidazolate frameworks(ZIF-L)nanosheets have received great attention in the field of water treatment due to the porous structure and excellent antibacterial ability,but the dense accumulation on the membrane surface and the low permeate flux greatly hinder their application.Herein,we synthesized m HNTs(modified halloysite nanotubes)/ZIF-L nanocomposites on modified m HNTs by in situ growth method.Interestingly,due to the different size of m HNTs and ZIF-L,m HNTs were packed in ZIF-L nanosheets.The hollow m HNTs provided additional transport channels for water molecules,and the accumulation of the ZIF-L nanosheets was decreased after assembling m HNTs/ZIF-L nanocomposites into membrane by filtration.The prepared m HNTs/ZIF-L membrane presented high permeate flux(59.6 L·m^(-2)·h^(-1)),which is 2-4 times of the ZIF-L membranes(14.8 L·m^(-2)·h^(-1)).Moreover,m HNTs/ZIF-L membranes are intrinsically antimicrobial,which exhibit extremely high bacterial resistance.We provide a controllable strategy to improve 2D ZIF-L assembles,and develops novel membranes using 2D package structure as building units.

关键词： zeolitic imidazolate framework Halloysite nanotubes 2D nanocomposites In-situ growth Dye/salt separation membrane Antibacterial property

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Boosting the direct conversion of NH4HCO3 electrolyte to syngas on Ag/Zn zeolitic imidazolate framework derived nitrogen-carbon skeleton

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化学科学与工程前沿:英文版 2023年第9期17卷 1196-1207页

作者： Huiyi Li Jianmin Gao Jingjing Shan Qian Du Yu Zhang Xin Guo Shaohua Wu Zhijiang Wang Institute of Combustion Engineering School of Energy Science and EngineeringHarbin Institute of TechnologyHarbin150001China MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin150001China Harbin Bolier Co. Ltd.Harbin150040China Department of Environmental Engineering Shanxi UniversityTaiyuan030006China

The electrochemical reduction of NH4HCO3 to syngas can bypass the high energy consumption of high-purity CO_(2)release and compression after the ammonia-based CO_(2)capture process.This technology has broad prospects in industrial applications and carbon neutrality.A zeolitic imidazolate framework-8 precursor was introduced with different Ag contents via colloid chemical synthesis.This material was carbonized at 1000℃to obtain AgZn zeolitic imidazolate framework derived nitrogen carbon catalysts,which were used for the first time for boosting the direct conversion of NH4HCO3 electrolyte to syngas.The AgZn zeolitic imidazolate framework derived nitrogen carbon catalyst with a Ag/Zn ratio of 0.5:1 achieved the highest CO Faradaic efficiency of 52.0%with a current density of 1.15 mA·cm^(−2)at−0.5 V,a H2/CO ratio of 1-2(−0.5 to−0.7 V),and a stable catalytic activity of more than 6 h.Its activity is comparable to that of the CO_(2)-saturated NH4HCO3 electrolyte.The highly discrete Ag-N_(x)and Zn-N_(x)nodes may have combined catalytic effects in the catalysts synthesized by appropriate Ag doping and sufficient carbonization.These nodes could increase active sites of catalysts,which is conducive to the transport and adsorption of reactant CO_(2)and the stability of*COOH intermediate,thus can improve the selectivity and catalytic activity of CO.

关键词： Ag catalyst zeolitic imidazolate framework CO_(2)electroreduction ammonium bicarbonate electrolyte syngas

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Fabrication of fluoroalkylsilane/zeolitic imidazolate framework composites for highly efficient superhydrophobic coating

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Carbon Resources Conversion 2022年第1期5卷 26-34页

作者： Preyaphan Kheaw-in Chanatip Samart Narong Chanlek Phakkhananan Pakawanit Prasert Reubroycharoen Guoqing Guan Suwadee Kongparakul Suda Kiatkamjornwong Department of Chemistry Faculty of Science and TechnologyThammasat UniversityPathumthani 12120Thailand Bioenergy and Biochemical Refinery Technology Program Faculty of Science and TechnologyThammasat University12120Thailand Synchrotron Light Research Institute(Public Organization) 111 University AvenueMuang DistrictNakhon Ratchasima 30000Thailand Department of Chemical Technology Faculty of ScienceChulalongkorn University254 Phyathai RoadWangmaiPatumwanBangkok 10330Thailand Institute of Regional Innovation Hirosaki UniversityAomori 030-0813Japan Office of University Research Affairs Chulalongkorn University254 Phyathai RoadWangmaiPatumwanBangkok 10330Thailand FRST Academy of ScienceOffice of the Royal SocietySanam Suea PaKhet DusitBangkok 10300Thailand

Superhydrophobic bagasse paper was successfully engineered by facile spray coating with a zeolitic imidazolate framework composite modified by 3,3,3-trifluoropropyltrimethoxysilane(FAS)and used as a filter membrane with special wettability for oil/water separation.Surface characteristics such as surface morphology,surface moieties,roughness,and wettability were observed.The addition of FAS decreased the apparent surface energy between solid surfaces and liquids with a polar contribution of surface free energy as low as 0 mN m−1.The formation of the FAS layer was confirmed by transmission electron microscopy and X-ray photoelectron spectroscopy core-level spectra.Three-dimensional surface topography revealed an increase in the spray coating cycle that enhanced the hydrophobicity of the coated paper.The results confirmed that not only microstructures but also the presence of functional groups with low surface energy(such as FAS)can promote surface hydrophobicity.The spray-coated paper with FAS/ZIF in the presence of a small amount of nanocellulose provided a superhydrophobic surface after the first spray cycle.The separation efficiency was up to 85%and was slightly affected by oil viscosity.Moreover,this can be used as a filter membrane for water-in-oil emulsions.In the present work,simple spray-coated paper is a promising candidate material for gravity-driven oil/water separation and water repellent coating.

关键词： Superhydrophobic surface Spray-coating zeolitic imidazolate framework Oil/water separation

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Spatial conﬁnement of zeolitic imidazolate framework deposits by porous carbon nanospheres for dual-atom catalyst towards high-performance oxygen reduction reaction

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Nano Research 2023年第8期16卷 11464-11472页

作者： Jiayi Zhao Ping Li Kaicai Fan Wenjie Wei Fenghong Lu Huimin Zhao Bin Li Lingbo Zong Lei Wang Key Laboratory of Eco-chemical Engineering College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China College of Materials Science and Engineering Qingdao University of Science and TechnologyQingdao 266042China

Dual atom catalysts(DACs),are promising electrocatalysts for oxygen reduction reaction(ORR)on account of the potential dual-atom active sites for the optimized adsorption of catalytic intermediates and the lower reaction energy barriers.Herein,spatial conﬁnement strategy to fabricate DACs with well-defined Fe,Co dual-atom active site is proposed by implanting zeolitic imidazolate frameworks inside the pores of highly porous carbon nanospheres(Fe/Co-SAs-Nx-PCNSs).The atomically dispersed dual-atom active sites facilitate the adsorption/desorption of intermediates.Furthermore,the spatial conﬁnement effect protects metal atoms aggregating.Benefiting from the rich accessible dual-atom active sites and boosted mass transport,we achieve remarkable ORR performance with half-wave potential up to 0.91 and 0.8 V(vs.reversible hydrogen electrode(RHE)),and long-term stability up to 10 h in both alkaline and acidic electrolytes.The remarkably enhanced ORR catalytic property of our as-developed DACs is in the rank of excellence for 1%.The as-developed rechargeable Zn-air battery(ZAB)with Fe/Co-SAs-Nx-PCNSs air cathode delivers ultrahigh power density of 216 mW·cm^(−2),outstanding specific capacity of 813 mAh·g^(−1),and promising cycling operation durability over 160 h.The flexible Zn-air battery also exhibits excellent specific capacity,cycling stability,and flexibility performance.This work opens up a new pathway for the multiscale design of efficient electrocatalysts with atomically dispersed multiple active sites.

关键词： spatial confinement zeolitic imidazolate framework porous carbon nanospheres(PCNSs) dual-atom catalyst oxygen reduction reaction(ORR)

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Eco-friendly method for synthesis of zeolitic imidazolate framework 8 decorated graphene oxide for antibacterial activity enhancement

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Particuology 2020年第2期18卷 24-32页

作者： Nazerah Ahmad Nik Abdul Hadi Md Nordin Juhana Jaafar Nik Ahmad Nizam Nik Malek Ahmad Fauzi Ismail Muhammad Nabil Fikri Yahya Siti Aishah Mohd Hanim Mohd Sohaimi Abdullah Advanced Membrane Technology Research Centre Universiti Teknologi Malaysia81310 SkudaiJohorMalaysia Malaysian Institute of Chemical Engineering Technology-Universiti Kuala Lumpur Lot 1988Bandar VendorTaboh Naning78000 Alor GajahMelakaMalaysia Chemical Engineering Department Universiti Teknologi PETRONAS32610 Seri IskandarPerakMalaysia Department of Biosciences Faculty of ScienceUniversiti Teknologi Malaysia81310 SkudaiJohorMalaysia Centre for Student Innovation and Technology Entrepreneurship Universiti Teknologi Malaysia81310 SkudaiJohorMalaysia

We report a rapid method for synthesis of zeolitic imidazolate framework 8(ZIF-8)-decorated graphene oxide(GO)composites(ZGO)with good antibacterial properties.The ZGO composites were synthesized at room temperature with low GO to metal salt ratios.The samples were characterized by X-ray diffraction,transmission electron microscopy,Fourier transform infrared spectroscopy,thermal gravimetric analysis,and surface area analysis.The characterization results show that ZIF-8 with a size of approximately 120 nm is successfully decorated on the surface of GO sheets with the host ZIF-8 framework maintained in the synthesized composite,but there is a significant reduction in the Brunauer-Emmett-Teller surface area.The antibacterial activities of the samples against Escherichia coli ATCC 11229 and Staphylococcus aureus ATCC 6538 as model strains of gram-negative and-positive bacteria,respectively,were determined by disc diffusion and minimum inhibitory concentration(MIC)tests.ZGO-1.0(1 wt%of ratio of GO to metal salt)shows the highest antibacterial activity with MIC values required to inhibit bacterial growth of E.coli and S.aureus of 5 times lower than those of pristine ZIF-8.Different antibacterial mechanisms are proposed based on field-emission scanning electron microscope images of the two bacteria after contact with the synthesized composite.Overall,owing to the simple synthesis,good stability,low chemical usage,and excellent antibacterial activity of the ZGO composites,they show great potential for application in the field of microbial contamination control.

关键词： Graphene oxide Metal-organic framework Hybrid nanocomposite zeolitic imidazolate framework Antibacterial agent

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Bimetallic zeolitic imidazolate framework-derived substrate-free anode with superior cyclability for high-capacity lithium-ion batteries

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Journal of Materials Science & Technology 2021年第8期67卷 116-126页

作者： Bhavana Joshi Edmund Samuel Yong-il Kim Govindasami Periyasami Mostafizur Rahaman Sam S.Yoon School of Mechanical Engineering Korea UniversitySeoul136-713Republic of Korea Department of Physics NES Science CollegeSwami Ramanand Teerth Marathwada UniversityLatur RoadNandedMaharashtra431606India Department of Chemistry College of ScienceKing Saud UniversityRiyadh11451Saudi Arabia

Freestanding carbon nanofibers loaded with bimetallic hollow nanocage structures were synthesized.The nanocages inherited the rhombic dodecahedral morphology of the zeolitic imidazolate framework(ZIF)precursors,ZIF-8 and ZIF-67.As anode materials for lithium-ion batteries(LIBs),the bimetallic nanocage-loaded freestanding carbon nanofibers effectively buffered volume expansions and alleviated pulverization through their different reduction and oxidation potentials.The higher capacities of the composite anodes arose via the formation of the Li_(x)Zn alloy and Li_(2)O by Zn and Co ions,respectively,and the enhanced conductivity conferred by the carbon nanofibers.A synergistic effect of the composite components toward the strong electrochemical performance(688 m A h·g^(-1)at 1200 m A·g^(-1))of the bimetallic nanocage-loaded fibers was demonstrated through the superior long-term stability of the anode(1048 m A h·g^(-1)after 300 cycles at 100 m A·g^(-1)),suggesting that the fabricated anode can be a promising material for use in portable LIBs.

关键词： Carbon nanofiber Nanostructure Composite anode zeolitic imidazolate framework

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A hybrid monolithic column based on flower-shaped zeolitic imidazolate framework for efficient capillary microextraction of brominated flame retardants

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Chinese Chemical Letters 2021年第10期32卷 3199-3201页

作者： Xuemei Wang Xinglan Cui Hong Ji Fangbing Wang Yacong Liu Xinzhen Du Xiaoquan Lu Key Laboratory of Bioelectrochemistry&Environmental Analysis of Gansu Province College of Chemistry and ChemicalEngineeringNorthwest Normal UniversityLanzhou 730070China

A novel flower-shaped zeolitic imidazolate framework(ZIF) doped organic-inorganic hybrid monolithic column(ZIF-HMC) was prepared by a simple sol-gel "one-step" method and utilized for efficient capillary microextraction(CME) of four brominated flame retardants.The prepared monolithic was characterized by Fourier transform infrared,scanning electron microscopy,X-ray photoelectron spectroscopy,energy disperse spectroscopy,and N_(2) adsorption-desorption.The parameters of CME were optimized by orthogonal array design.Under the optimal conditions,the ZIF-HMC showed excellent extraction efficiency,the limit of detection(LODs) and the limit of quantification(LOQs) were in the range of0.52$3.1 mg/L and 1.7$10 mg/L,respectively,and the proposed method demonstrated good recovery(88.8%–116.6%) with the RSD less than 13.6% and a reusability of at least 30 times.The ZIF-HMC possessed great potential for separating organic pollutants and the strategy used here could be extended to prepare other derivatized HMC functionalized monoliths.

关键词： Capillary microextraction Brominated flame retardants Hybrid monolithic column zeolitic imidazolate framework

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Cobalt doping amount determines dominant reactive species in peroxymonosulfate activation via porous carbon catalysts co-doped by cobalt and nitrogen

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Journal of Environmental Sciences 2024年第4期138卷 212-226页

作者： Xiang Li Limeng Wu Aiqin Zhang Shaohua Wu Yan Lin Chunping Yang Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China Academy of Environmental and Resource Sciences School of Environmental Science and EngineeringGuangdong University of Petrochemical TechnologyMaoming 525000China College of Environmental Science and Engineering Hunan University and Key Laboratory of Environmental Biology and Pollution Control(Hunan University)Ministry of EducationChangsha 410082China

Switching the reaction routes in peroxymonosulfate(PMS)-based advanced oxidation processes have attracted much attention but remain challenging.Herein,a series of Co-N/C catalysts with different compositions and structures were prepared by using bimetallic zeolitic imidazolate frameworks based on ZIF-8 and ZIF-67(x Zn/Co-ZIFs).Results show that Co doping amount could mediate the transformation of the activation pathway of PMS over CoN/C.When Co doping amount was less than 10%,the constructed x Co-N/C/PMS system(x≤10%)was singlet oxygen-dominated reaction;however further increasing Co doping amount would lead to the generation and coexistence of sulfate radicals and high-valent cobalt,besides singlet oxygen.Furthermore,the nitrogen-coordinated Co(Co-NX)sites could serve as main catalytically active sites to generate singlet oxygen.While excess Co doping amount caused the formation of Co nanoparticles from which leached Co ions were responsible for the generation of sulfate radicals and high-valent cobalt.Compared to undoped N/C,Co doping could significantly enhance the catalytic performance.The 0.5%Co-N/C could achieve the optimum degradation(0.488 min^(-1))and mineralization abilities(78.4%)of sulfamethoxazole among the investigated Co-N/C catalysts,which was superior to most of previously reported catalysts.In addition,the application prospects of the two systems in different environmental scenarios(pH,inorganic anions and natural organic matter)were assessed and showed different degradation behaviors.This study provides a strategy to regulate the reactive species in PMS-based advanced oxidation process.

关键词： Peroxymonosulfate Sulfate radical Singlet oxygen Cobalt zeolitic imidazolate framework Advanced oxidation process

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Synergistic coupling of Ni_(3)ZnC_(0.7)decorated with homogeneous multimetal CoNiCuFe nitrogen-codoped carbon matrix as high-entropy catalysts for efficient overall water splitting

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Journal of Materials Science & Technology 2023年第4期135卷 26-33页

作者： Xi Du Leilei Yin WenJun Zhang Maliang Zhang Kunmei Su Zhenhuan Li State Key Laboratory of Separation Membranes and Membrane Processes Tiangong UniversityTianjin 300387China Tianjin Key Laboratory of Advanced Fibers and Energy Storage School of Materials Science and EngineeringTiangong UniversityTianjin 300387China School of Chemistry and Chemical Engineering Tiangong UniversityTianjin 300387China

Due to unique electrical properties and high catalytic efficiency,transition metal nitrogen-codoped car-bide(TM-N-C)has attracted tremendous interest as a multifunctional electrocatalyst for water splitting.Unlike traditional single-source modification,herein a novel pomegranate-like high-entropy(HE)elec-trocatalyst of Ni_(3)ZnC_(0.7)decorated with homogeneous multimetal(Fe,Co,Cu,and Ni)nitrogen-codoped carbon matrix(Ni_(3)ZnC_(0.7)@CoNiCuFe-NC)is reported.It can be implemented by the simple thermal an-nealing method of multimetal codoped zeolitic imidazolate framework(ZIF).Benefiting from the syn-ergistic effects of plentiful TM-N-C species,template effect of ZIF and distinct nanoporous structure,HE electrocatalyst Ni_(3)ZnC_(0.7)@CoNiCuFe-NC exhibits outstanding electrocatalytic performance.When ap-plied in strong alkaline electrolyte(1.0 M KOH),the overpotentials of Ni_(3)ZnC_(0.7)@CoNiCuFe-NC present as low as 202 and 97 mV for oxygen evolution reaction(OER)and hydrogen evolution reaction(HER)at 10 mA cm^(−2)current density.Surprisingly as a bifunctional electrode,it can achieve the low cell voltage of 1.53 V at 10 mA cm^(−2)current density for overall water splitting,which is comparable to conventional IrO_(2)||Pt/C electrode and superior to the recently reported analogous bifunctional catalysts.Thus,the work proposes the direction for the rational design of homogeneous distribution of TM-N-C material for water splitting in the green hydrogen energy industry.

关键词： Homogeneous multimetal zeolitic imidazolate framework High-entropy electrocatalyst Synergistic effect Overall water splitting

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