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Biological porous carbon encapsulated polyethylene glycol-based phase change composites for integrated electromagnetic interference shielding and thermal management capabilities

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Journal of materials Science & technology 2022年第18期113卷 147-157页

作者： Shuang Liu Mengjie Sheng Hao Wu Xuetao Shi Xiang Lu Jinping Qu key laboratory of Material Chemistry for Energy Conversion and Storage Huazhong University of Science&TechnologyMinistry of EducationWuhan 430074PR China Hubei Engineering Research Center for Biomaterials and Medical Protective materials Huazhong University of Science&TechnologyWuhan 430074PR China Hubei key laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical EngineeringHuazhong University of Science&TechnologyWuhan 430074PR China Shaanxi key laboratory of Macromolecular Science and technology School of Chemistry and Chemical EngineeringNorthwestern PolytechnicalUniversityXi’an 710072China School of materials Science and Engineering Henan University of Science and TechnologyLuoyang 471023PR China

The development of functional composites with excellent thermal management capabilities and electro-magnetic interference(EMI)shielding has become extremely urgent for keeping up with the continuous improvement of the operating speed and efficiency for electronic equipment.In this study,the biolog-ical wood-derived porous carbon(WPC)was determined as the supporting material to encapsulating polyethylene glycol(PEG),and a series of WPC/PEG/Fe_(3)O_(4) phase change composites(PCCs)with excel-lent shape stability,EMI shielding and thermal management capabilities were prepared via a simple vac-uum impregnation method.The Fe_(3)O_(4) magnetic particles modified PCCs have greatly improved the EMI shielding effectiveness(SE).The EMI SE of WP-4(7.5 wt.% Fe_(3)O_(4) in PEG)can be up to 55.08 dB between 8.2−12.4 GHz,however,the WP-0 without Fe_(3)O_(4) addition is only 40.08 dB.Meanwhile,the absorption ratio of electromagnetic waves(EMW)has also increased from 75.02%(WP-0)to 85.56%(WP-4),which effectively prevents secondary pollution.In addition,after wrapping a thin layer of polydimethylsiloxane resin(PDMS),the obtained WP-4 can maintain a high heat storage capacity(109.52 J/g)and good wa-ter stability.In short,the prepared WPC/PEG/Fe_(3)O_(4) PCCs have great potential application value in the thermal management and electromagnetic shielding requirements for electronic devices.

关键词： Biological wood-derived porous carbon Polyethylene glycol Phase change composites Thermal management Electromagnetic interference shielding

Lotus-stalk Bi4Ge3O12 as binder-free anode for lithium and sodium ion batteries

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Chinese Chemical Letters 2019年第6期30卷 1341-1345页

作者： Jianlong Xu Wei Wei Xu Zhang Lei Liang Maotian Xu College of materials Science and Engineering Xi'an University of Architecture and Technology Xi'an 710055 China School of Chemistry and Chemical Engineering Henan D&A Engineering Center of Advanced Battery Materials Henan Key Laboratory of Bimolecular Reorganization and Sensing Shangqiu Normal University Shangqiu 476000 China

Alloyed-type anode materials with high-energy density for lithium and sodium ion batteries attracted much attention of the researchers. However, substantial volume expansion of these materials in the devices during repeated electrochemical process leads to fast capacity fading and hinders their further practical application. Nanotechnology could act as a useful tool to effectively address the issue. Herein, lotus-stalk Bi4Ge3O12 nanosheets vertically grown on the nickel foam (denoted as Bi4Ge3O12 NSs@NF) were prepared via a straight-forward solvothermal method. Benefiting from their three dimensional (3D) conductive framework and two dimensional (2D) lotus-stalk Bi4Ge3O12 nanosheet structure, as anode materials of lithium-ion batteries (LIBs) and sodium-ion batteries (NIBs), the electrochemical performances of Bi4Ge3O12 NSs@NF were greatly enhanced as a result of mitigating the huge volume variations during cycles. The Bi4Ge3O12 NSs@NF electrodes delivered a high reversible capacity of 1033.1 mAh/g for the first cycle and exhibited 68.6%capacity retention of after 88 cycles at 0.10 A/g in the voltage window of 0.01~3.0 V versus Li/Li+. In the test of NIBs, the lotus-stalk Bi4Ge3O12 composite electrodes still stored Na+as high as 332.3 mAh/g at 0.10 A/g over 100 sodiation/desodiation repeating cycles.

关键词： Bi4Ge3O12 Nanosheets Lithium-ion battery Sodium-ion batter Anode

Conductive property of Zr_(0.1)Fe_(0.9)V_(1.1)Mo_(0.9)O_7 with low thermal expansion

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Chinese Physics B 2019年第5期28卷 244-248页

作者：何小可戚恒徐启刘献省许磊袁保合 North China University of Water Resources and Electric Power henan key laboratory of Photovoltaic materials Henan University

Low thermal expansion materials are mostly ceramics with low conductive property, which limits their applications in electronic devices. The poor conductive property of ceramic ZrV_2 O_7 could be improved by bi-substitution of Fe and Mo for Zr and V, accompanied with low thermal expansion. Zr_(0.1) Fe_(0.9) V_(1.1 )Mo_(0.9 )O_7 has electrical conductivity of 8.2× 10^(-5) S/cm and 9.41× 10^(-4) S/cm at 291 K and 623 K, respectively. From 291 K to 413 K, thermal excitation leads to the increase of carrier concentration, which causes the rapid decrease of resistance. At 413–533 K, the conductivity is unchanged due to high scattering probability and a slowing increase of carrier concentration. The conductivity rapidly increases again from533 K to 623 K due to the intrinsic thermal excitation. The thermal expansion coefficient of Zr_(0.1) Fe_(0.9) V_(1.1 )Mo_(0.9 )O_7 is as low as 0.72× 10^(-6 )K^(-1) at 140–700 K from the dilatometer measurement. These properties suggest that Zr_(0.1) Fe_(0.9) V_(1.1 )Mo_(0.9 )O_7 has attractive application in electronic components.

关键词： low thermal expansion conductivity thermal excitation electric impedance

Self-assembled manganese phthalocyanine nanoparticles with enhanced peroxidase-like activity for anti-tumor therapy

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Nano Research 2022年第3期15卷 2347-2354页

作者： Jinghan Wang Shanqing Gao Xiao Wang Haozhen Zhang Xitong Ren Juewen Liu Feng Bai key laboratory for Special Functional materials of Ministry of Education National&Local Joint Engineering Research Center for High efficiency Display and Lighting TechnologySchool of Materials Science and Engineeringand Collaborative Innovation Center of Nano Functional Materials and ApplicationsHenan UniversityKaifeng 475004China Department of Chemistry Waterloo Institute for NanotechnologyWaterlooOntario N2L 3G1Canada henan and Macquarie University Joint Centre for Biomedical Innovation School of Life SciencesHenan UniversityKaifeng 475004China

The use of functional nanoparticles as peroxidase-like(POD-like)catalyst has recently become a focus of research in cancer therapy.Phthalocyanine is a macrocyclic conjugated metal ligand,which is expected to achieve a high POD-like catalytic activity,generating free radicals and inhibiting the proliferation of cancer cells.In this paper,we synthesized phthalocyanine nanocrystals with different structures through noncovalent self-assembly confined within micro-emulsion droplets,and manganese phthalocyanine(MnPc)possessing a metal–N–C active center was used as the building block.These nano-assemblies exhibit shape-dependent POD-like catalytic activities,because the emulsifier and MnPc co-mixed assembly reduced the close packing between MnPc molecules and exposed more active sites.The assembly had a water-dispersed nanostructure,which is conducive to accumulation at tumor sites through the enhanced permeability and retention effect(EPR).Because of a highly efficient microenvironmental response,the assembly showed higher catalytic activity only emerged under the acidic tumor-like microenvironment,but caused less damage to normal tissues in biomedical applications.In vivo and in vitro catalytic therapy tests showed excellent anti-tumor effects.This work explored a new way for the application of metal–organic macromolecules such as MnPc as nanozymes for catalytic tumor therapy.

关键词： self-assembly manganese phthalocyanine nanozymes peroxidase catalytic therapy

Site preference and the optical thermometry strategy by different temperature response from two sites environment of Mn2+ in K7ZnSc2B15O30

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Site preference and the optical thermometry strategy by diff...

Microwave induced in-situ formation of SiC nano wires on SiCNO ceramic aerogels with excellent electromagnetic wave absorption performance

中国稀土学会2021学术年会

作者： Ying Fu Chao Li Feng Zhang Shixiang Huang Zhangyue Wu Yuhua Wang Zhengzheng Zhang key Lab of Photovoltaic materials of henan Province Henan University National & Local Joint Engineering laboratory for Optical Conversion materials and technology Lanzhou University

A novel optical thermometry strategy based on different temperature response from two sites environment of Mnin KZnScBO:Mnhad been reported.The color tunable Mndoped KZnScBO luminescence materials were successfully prepared,and the photoluminescence properties were studied.Using density functional theory,the electronic structure was estimated.The calculated result showed that KZnScBO was a direct-band gap material with the energy gap of 4.22 eV.Upon the excitation of UV light,the photoluminescence spectra of KZnScBO:Mnphosphors demonstrated two emission bands centered at 584 nm and 675 nm attributed to the substitution of Znand Scsites with Mnrespectively.Depending on the concentration of Mn,the emitting color can be tunable from yellow to red in the Mndoped single-phase phosphors.The temperature-dependent luminescence properties of KZnScBO:Mnwas anlysized range from 300 to 520 K.The results indicated that the thermal quenching properties of Mnat the two kinds of lattice sites are different.When Mnoccupied the position of Sc,the luminescence intensity decreased significantly with the increasing of temperature,on the contrary,when Mnoccupied the position of Zn,the luminescence intensity decreased slightly with the rise of temperature.This situation caused a significant change in the fluorescence intensity ratio of the two emission bands.Further study showed that the typical phosphor had a high relative and absolute sensitivity respectively with maximum value of 1.84%K and 0.0311 K at 520 K,and the temperature resolution is about 0.8 K.These results indicated that the single Mndoped KZnScBO materials showed a potential application for optical thermometry.

关键词： site preference photoluminescence properties multiband emission temperature response optical thermometry

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Journal of Advanced Ceramics 2021年第5期10卷 1140-1151页

作者： Keke YUAN Daoyang HAN Junfang LIANG Wanyu ZHAO Mingliang LI Biao ZHAO Wen LIU Hongxia LU Hailong WANG Hongliang XU Gang SHAO Rui ZHANG School of materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China The 27th Research Institute of China Electronic technology Group Corporation Zhengzhou 450047China henan key L aboratory of aeronautical Material and application technology School of Materials Science and EngineeringZhengzhou University of AeronauticsZhengzhou 450046China School of materials Science and Engineering Luoyang Institute of Science and TechnologyLuoyang 471023China

Electromagnetic absorption(EMA)materials with light weight and harsh environmental robustness are highly desired and crucially important in the stealth of high-speed vehicles.However,meeting these two requirements is always a great challenge,which excluded the most attractive lightweight candidates,such as carbon-based materials.In this study,SiC_(nw)-reinfbrced SiCNO(SiC_(nw)/SiCNO)composite aerogels were fabricated through the in-situ growth of SiC_(nw) in polymer-derived SiCNO ceramic aerogels by using catalyst-assisted microwave heating at ultra-low temperature and in short time.The phase composition,microstructure,and EMA property of the SiC_(nw)/SiCNO composite aerogels were systematically investigated.The results indicated that the morphology and phase composition of SiC_(nw)/SiCNO composite aerogels can be regulated easily by varying the microwave treatment temperature.The composite aerogels show excellent EMA property with minimum reflection loss of -23.9 dB@13.8 GHz,-26.5 dB@10.9 GHz,and -20.4 dB@14.5 GHz and the corresponding effective bandwidth of 5.2 GHz,3.2 GHz,and 4.8 GHz at 2.0 mm thickness for microwave treatment at 600℃,800℃,and 1000℃,respectively,which is much better than that of SiCN ceramic aerogels.The superior EMA performance is mainly attributed to the improved impedance matching,multireflection,multi-interfacial polarization,and micro current caused by migration of hopping electrons.

关键词： polymer-derived SiCNO ceramic aerogel SiC nanowires(SiC_(nw)) microwave heating electromagnetic absorption(EMA)performance

Emerging WS_(2)/WSe_(2)@graphene nanocomposites: synthesis and electrochemical energy storage applications

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Rare Metals 2024年第1期43卷 1-19页

作者： Yu-Meng Gao Yong Liu Kai-Jia Feng Jun-Qing Ma Ying-Jie Miao Bin-Rui Xu Kun-Ming Pan Osaka Akiyoshi Guang-Xin Wang Ke-Ke Zhang Qiao-Bao Zhang National Joint Engineering Research Center for Abrasion Control and Molding of Metal materials Henan Key Laboratory of Non-Ferrous Materials Science and Processing TechnologySchool of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang 471023China Provincial and Ministerial Co-Construction of Collaborative School of Electrical Engineering Henan University of Science and TechnologyLuoyang 471023China Biomaterials laboratory Faculty of EngineeringOkayama UniversityTsushima-NakeOkayama-Shi 700-8530Japan Department of materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005China Fujian key laboratory of Surface and Interface Engineering for High Performance materials Xiamen UniversityXiamen 361005China

In recent years, tungsten disulfide(WS_(2)) and tungsten selenide(WSe_(2)) have emerged as favorable electrode materials because of their high theoretical capacity, large interlayer spacing, and high chemical activity;nevertheless, they have relatively low electronic conductivity and undergo large volume expansion during cycling, which greatly hinder them in practical applications. These drawbacks are addressed by combining a superior type of carbon material, graphene, with WS_(2) and WSe_(2) to form a WS_(2)/WSe_(2)@graphene nanocomposites.These materials have received considerable attention in electro-chemical energy storage applications such as lithium-ion batteries(LIBs), sodium-ion batteries(SIBs),and supercapacitors. Considering the rapidly growing research enthusiasm on this topic over the past several years, here the recent progress of WS_(2)/WSe_(2)@graphene nanocomposites in electrochemical energy storage applications is summarized. Furthermore, various methods for the synthesis of WS_(2)/WSe_(2)@graphene nanocomposites are reported and the relationships among these methods, nano/microstructures, and electrochemical performance are systematically summarized and discussed. In addition, the challenges and prospects for the future study and application of WS_(2)/WSe_(2)@graphene nanocomposites in electrochemical energy storage applications are proposed.

关键词： WS_(2)/WSe_(2)@graphene nanocomposites Liion batteries(LIBs) Na-ion batteries(SIBs) Supercapacitors Electrochemical performance

Enhancing electrochemical performances of small quinone toward lithium and sodium energy storage

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Rare Metals 2022年第2期41卷 425-437页

作者： Li-Min Zhu Guo-Chun Ding Qing Han Yong-Xia Miao Xin Li Xin-Li Yang Lei Chen Gong-Ke Wang Ling-Ling Xie Xiao-Yu Cao School of Chemistry and Chemical Engineering Henan University of TechnologyZhengzhou 450001China key laboratory of High Specific Energy materials for Electrochemical Power Sources of Zhengzhou City Henan University of TechnologyZhengzhou 450001China College of Chemical and Printing-Dyeing Engineering Henan University of EngineeringZhengzhou 450007China School of materials Science and Engineering Henan Normal UniversityXinxiang 453007China School of Environmental Engineering Henan University of TechnologyZhengzhou 450001China

Further application of organic quinone cathodes is restricted because they are inherent in poor conductivity and tend to dissolve in aprotic electrolytes.Salinization can work on the strong solubility of quinones.Herein,the ortho-disodium salt of tetrahydroxyquinone(o-Na_(2)THBQ)was selected to promote the electrochemical properties of tetrahydroxyquinone(THBQ).Reduced dissolution of o-Na_(2)THBQ in electrolyte after salinization(replacement of two H with two Na)contributed to enhanced electrochemical performance.In sodium-ion batteries(SIBs)in ester-based electrolyte,o-Na2THBQ cathodes at 50 mA·g^(-1)exhibited a reversible discharge capacity of 107 mAh·g^(-1)after 200 cycles.Ulteriorly,in ether-based electrolyte,reversible discharge capacities of 200.4,102.2,99.5 and 88 mAh·g^(-1)were obtained at 800,1600,3200 and 4800 mA·g^(-1)after 1000,2000,5000 and 8000 cycles,respectively.The ultraviolet absorption spectra and ex situ dissolution experiments of THBQ and o-Na_(2)THBQ showed that o-Na_(2)THBQ hardly dissolved in ether-based electrolyte.In lithium-ion batteries(LIBs),graphene was selected to further enhance the conductivity of o-Na2THBQ.At 50 mA·g^(-1),o-Na_(2)THBQ and o-Na_(2)THBQ/Gr cathodes exhibited reversible discharge capacities of 124 and 131.5 mAh·g^(-1)after 200 cycles in ester-based electrolyte,respectively.At 50 mA·g^(-1),PTPAn/o-Na_(2)THBQ electrodes in an all-organic Na/Li-ion battery showed reversible charge/discharge capacities of 51/50.3 and 33.8/33.1 mAh·g^(-1)after 200 cycles.

关键词： Na/Li-ion batteries All-organic batteries Cathodes Organic materials Electrochemical performance

Peptide-Based AIEgens:From Molecular Design,Stimuli Responsiveness to Biomedical application

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CCS Chemistry 2022年第2期4卷 437-455页

作者： Ben-Li Song Xue-Hao Zhang Zeng-Ying Qiao Hao Wang School of Pharmaceutical Sciences Henan Institute of Advanced TechnologyZhengzhou UniversityHenan 450001 CAS Center for Excellence in Nanoscience CAS Key Laboratory for Biomedical Effects of Nanomaterials and NanosafetyNational Center for Nanoscience and Technology(NCNST)Beijing 100190

Luminogens with aggregation-induced emission(AIEgens)have a wide range of biomedical applications in bioimaging,photodynamic anticancer,antibacterial therapy,and other fields,owing to their unique photophysical properties.The precise structural design and modification of AIE molecules have aroused great interest in the past years.As peptides-AIE hybrid materials,peptide-based AIEgens generally have better solubility,biocompatibility,and lower systemic toxicity.The functional diversity,modularity,and portability of peptides provide more possibilities for the intelligent structure and functional design of AIEgens.This review summarizes the recent research progress of peptide-based AIEgens nanomaterials,from molecular design,stimuli responsiveness to biomedical application,focusing on the advantages of peptides and AIE molecules as conjugates.Finally,a summary of the challenges and opportunities of peptide-based AIEgens nanomaterials for future clinical biomedical applications is presented.

关键词： peptide AIEgens nanomaterials responsive bioimaging anticancer