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Pillar effect boosting the electrochemical stability of Prussian bluepolypyrrole for potassium ion batteries

Nano Research 2023年第5期16卷 6326-6333页

作者： Mengmeng Zhou Xiaomeng Tian Ying Sun Xiaojun He Hui Li Tianyi Ma Qin Zhao Jieshan Qiu Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials of Liaoning Province Institute of Clean Energy ChemistryCollege of ChemistryLiaoning UniversityShenyang 110036China Anhui Key Laboratory of Coal Clean Conversion and High Valued Utilization Key Laboratory of Metallurgical Emission Reduction&Resources Recycling Ministry of EducationSchool of Chemistry and Chemical EngineeringAnhui University of TechnologyMaanshan 243002China School of Science RMIT UniversityMelbourne VIC 3000Australia State Key Laboratory of Chemical Resource Engineering College of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029China

Due to the high theoretical capacity and electrode potential,Prussian blue is regarded as promising cathode material for potassium ion ***,inferior structural stability,poor electronic conductivity,ambiguous energy storage mechanism have limited the application of Prussian blue ***,a highly stable Prussian blue-polypyrrole(PB-PPY)composite has been prepared by a facile one-step ***-PPY displays higher discharging capacity,better rate capacity,and longer cycling lifespan than that of pure Prussian blue in potassium ion *** superior electrochemical performance can be attributed to the unique synthesis strategy to reduce the content of vacancies and crystal water in Prussian blue and enhance the ***,partial K ions have been evidenced that could remain in the Prussian blue framework,which contributes the long-term cycling *** K ions in the framework play the role of“pillars”to support the framework of Prussian blue and relieve the structural stress during the intercalation and de-intercalation of K *** work will reveal a new energy storage mechanism of Prussian blue and promote the design of high stability Prussian blue in the future.

关键词： Prussian blue high-stability framework pillar effect potassium ion batteries polypyrrole

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Construction of a mineralized collagen nerve conduit for peripheral nerve injury repair

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Regenerative Biomaterials 2023年第1期10卷 81-96页

作者： Guman Duan Chengli Li Xiaoqing Yan Shuhui Yang Shuo Wang Xiaodan Sun Lingyun Zhao Tianxi Song Yongwei Pan Xiumei Wang State Key Laboratory of New Ceramics and Fine Processing Key Laboratory of Advanced Materials of Ministry of EducationSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Department of Orthopedics Beijing Tsinghua Changgung HospitalSchool of Clinical MedicineTsinghua UniversityBeijing 102218China Department of Orthopedics Beijing Changping District HospitalBeijing 102202China Beijing Allgens Medical Science and Technology Co. LtdBeijing 100176China

A new nerve guidance conduits(NGCs)named MC@Col containing Type I collagen(Col)and mineralized collagen(MC)was developed,enhancing mechanical and degradation *** physicochemical properties,the mechanical properties and in vitro degradation behavior were all *** adhesion and proliferation of Schwann cells(SCs)were *** the in vivo experiment,MC@Col NGC and other conduits including Col,chitosan(CST)and polycaprolactone(PCL)conduit were implanted to repair a 10-mm-long Sprague-Dawley rat’s sciatic nerve *** analyses,morphological analyses,electrophysiological analyses and further gait analyses were all evaluated after implantation in 12 *** strength and degradation performance of the MC@Col NGC were improved by the addition of MC in comparison with pure Col *** vitro cytocompatibility evaluation revealed that the SCs had good viability,attachment and proliferation in the MC@*** in vivo results,the regenerative outcomes of MC@Col NGC were close to those by an autologous nerve graft in some respects,but superior to those by Col,CST and PCL *** MC@Col NGC exhibited good mechanical performance as well as biocompatibility to bridge nerve gap and guide nerve regeneration,thus showing great promising potential as a new type of conduit in clinical applications.

关键词： nerve guidance conduit collagen mineralized collagen peripheral nerve regeneration

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Rodent enamel-inspired hydroxyapatite nanocomposites with Fe 3+ -rich amorphous intergranular phases

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Journal of materials Research and technology 2025年 36卷 7423-7432页

作者： Shenye Chen Zhengjian Su Bingyu Xue Benxi Xu Yafei Cheng Kun Wang Yidi Li Zhengyi Fu Hubei Longzhong Laboratory Xiangyang 441000 PR China School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 PR China State Key Laboratory of Precision Blasting Jianghan University Wuhan 430056 PR China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 PR China

Rodent enamel is primarily composed of hydroxyapatite (HAP) nanowires and Fe 3+ -rich amorphous intergranular phases (AIP). Inspired by rodent tooth enamel, this study successfully formed a layer of Fe 3+ -rich AIP on the outer layer of HAP nanowires by ion exchange between Fe 3+ and Ca 2+ within the HAP lattice. The thermal stability of Fe-HAP nanowires with Fe 3+ -rich AIP was enhanced. By bi-directional freezing of Fe-HAP nanowires with polyvinyl alcohol (PVA), rodent enamel-like nanocomposites (Fe-HEN) were obtained. Owing to the reinforcing and toughening effect of Fe 3+ -rich AIP, Fe-HEN exhibited a hardness of 1.66 ± 0.23 GPa, a Young's modulus of 48.8 ± 6.7 GPa in the longitudinal direction, as well as a hardness of 1.38 ± 0.16 GPa and a Young's modulus of 40.2 ± 3.0 GPa in the transversal direction. The flexural strength of the sample reached 153.5 ± 5.0 MPa, which is 2.9 times higher than that of samples without AIP, surpassing the performance of natural rodent enamel. The compressive strength reached 205 ± 4.3 MPa, representing a 1.5-fold increase over the sample without AIP and comparable to that of natural enamel. Compared to samples without AIP, Fe-HEN exhibits superior fracture toughness and crack deflection, better corrosion resistance, owing to the reinforcing effect of Fe 3+ -rich AIP at nanowire interfaces. This study demonstrates the incorporation of amorphous reinforced structures into the tooth enamel-like materials via ion exchange, offering a promising strategy for the development of high-performance multiscale composites.

关键词： Hydroxyapatite nanowires Amorphous intergranular phases Enamel-like nanocomposites Ion exchange Rodent enamel-inspired

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One-step preparation of porous aminated-silica nanoparticles and their antibacterial drug delivery applications

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Journal of materials Science & technology 2020年第15期47卷 139-146页

作者： Yongren Wu Shun Chen Yang Liu Zhiwei Lu Shaokun Song Yang Zhang Chuanxi Xiong Lijie Dong Center for Smart Materials and Devices State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan430070China

Porous functionalized silica nanoparticles have attracted the interest of researchers as they are excellent carriers for antibacterial drug delivery *** this work,porous aminated-silica nanoparticles(SiO2-NH2 NPs) were prepared via one-step approach through the ammonia-catalyzed hydrolysis of tetraethylorthosilicate(TEOS) and(3-aminopropyl) triethoxysilane(APTES) in a mixed water-ethanol *** obtained SiO2-NH2 NPs displayed a spherical morphology and relatively uniform size distribution,while the morphology and structure of SiO2-NH2 NPs were mainly determined by the order of the reagents added and the pH value of the *** characterization,the results showed that there were a large number of-NH2 groups on the surface of porous SiO2-NH2 NPs and that the porous SiO2-NH2 NPs had a large surface area of 476 m2 g-1 with an average pore width of 4.3 *** an absorbing-releasing experiment and bacterial test,those SiO2-NH2 NPs were found to exhibit efficient absorption and release of drugs as well as a pH-de pendent release pattern of epirubicin-loaded SiO2-NH2 ***,SiO2-NH2@capsaicin NPs exhibited antibacterial *** porous SiO2-NH2 NPs could be a candidate for drug delivery for antibacterial applications owing to their tailored porous structure and high surface area.

关键词： Porous aminated-silica nanoparticles Surface area Drug delivery Antibacterial property

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Programming an efficient technique for designing smart C-doped MIC with dual self-protection forinformation and high-energy

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Rare Metals 2024年第12期43卷 6694-6703页

作者： Xiao-Gang Guo Tao-Tao Liang Hui-Sheng Huang Bin-Fang Yuan Fu-Lan Zhang Yi-Huang Chen Lu Liu Xun Cui Chongqing Key Laboratory of Inorganic Special Functional Materials College of Chemistry and Chemical EngineeringYangtze Normal UniversityChongqing408100China Department of Orthopedic Surgery Chongqing Sports Medicine CenterSouthwest HospitalThe Third Military Medical UniversityChongqing400038China College of Chemistry and Materials Engineering Wenzhou UniversityWenzhou325035China Institute of Sustainability for Chemicals Energy and Environment(ISCE2)Agency for ScienceTechnology and ResearchSingapore627833Singapore State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan430200China

Constructing self-protected metastable intermolecular composites(MICs) enables the regulation of microstructures towards boosting controllable detonation performance,and also prevents information leakage,which is meaningful but ***,a convenient and efficient method of combining highly-controlled electrophoretic assembly,surface modification and microwave heat treatment was employed to design promising heattriggered wettability switchable high-energy smart C-doped Al/Cr_(2)O_(3)MIC,and surface modification mechanism was proposed,*** anti-wetting ability of the product was demonstrated by a series of tests of water contact angle,impact resistance,immersion,selfcleaning,*** key information recording/encryption procedures were realized by constructing a hydrophilic/hydrophobic interface and adjusting the wettability of the *** addition,the output heat of asobtained smart MIC can reach ~1.5 kJ·g^(-1),and its attenuation rate was only ~30% even after underwater aging,further verifying its potential ***,our design provides a promising strategy for engineering smart MIC with diversified functional structures for blasting applications and beyond.

关键词： High-energy MIC Information self-protection Exothermicity Stability

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La-substituted W-type barium-nickel ferrites for tunable and high-performance electromagnetic wave absorption

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International Journal of Minerals,Metallurgy and materials 2025年第3期32卷 645-656页

作者： Long Wang Jiurong Liu Shenghui Xie Yanli Deng Zhou Wang Shanyue Hou Shengying Yue Gang Wang Na Wu Zhihui Zeng Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) School of Materials Science and EngineeringShandong UniversityJinan 250061China Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education and International Center for Dielectric ResearchSchool of Electronic Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China Army Engineering University of PLA College of Field Engineering Nanjing 210007China Laboratory for Multiscale Mechanics and Medical Science State Key Laboratory for Strength and Vibration of Mechanical StructuresSchool of AerospaceXi’an Jiaotong UniversityXi’an 710049China Department of Electrical and Computer Engineering Beckman Institute for Advanced Science and TechnologyUniversity of Illinois at Urbana-ChampaignUrbana 61801USA School of Chemistry and Chemical Engineering Shandong UniversityJinan 250100China

W-type barium-nickel ferrite(BaNi_(2)Fe_(16)O_(27))is a highly promising material for electromagnetic wave(EMW)absorption be-cause of its magnetic loss capability for EMW,low cost,large-scale production potential,high-temperature resistance,and excellent chemical ***,the poor dielectric loss of magnetic ferrites hampers their utilization,hindering enhancement in their EMW-absorption *** efficient strategies that improve the EMW-absorption performance of ferrite is highly desired but re-mains ***,an efficient strategy substituting Ba^(2+)with rare earth La^(3+)in W-type ferrite was proposed for the preparation of novel La-substituted ferrites(Ba_(1-x)LaxNi_(2)Fe_(15.4)O_(27)).The influences of La^(3+)substitution on ferrites’EMW-absorption performance and the dissipative mechanism toward EMW were systematically explored and ***^(3+)efficiently induced lattice defects,enhanced defect-induced polarization,and slightly reduced the ferrites’bandgap,enhancing the dielectric properties of the ***^(3+)also enhanced the ferromagnetic resonance loss and strengthened magnetic *** effects considerably improved the EMW-absorption perform-ance of Ba_(1-x)LaxNi_(2)Fe_(15.4)O_(27)compared with pure W-type *** x=0.2,the best EMW-absorption performance was achieved with a minimum reflection loss of-55.6 dB and effective absorption bandwidth(EAB)of 3.44 GHz.

关键词： electromagnetic wave absorption W-type barium ferrite rare earth dielectric

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Synergistic roles of platinum nanoparticles and sodium ions within beta zeolites in N-alkylation of amines with aromatic alcohols

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Science China Chemistry 2023年第9期66卷 2690-2699页

作者： Yue Wu Shibo Xi Cailing Chen Qizhi Hu Zhuo Xiong Jianyue Wang Yihu Dai Yu Han Shi Jiang Jun Wang Yu Zhou State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Institute of Sustainability for Chemicals Energy and EnvironmentA*STAR(Agency for ScienceTechnology and Research)Singapore 627833Singapore Advanced Membranes and Porous Materials Center Physical Sciences and Engineering DivisionKing Abdullah University of Science and TechnologyThuwal 23955-6900Saudi Arabia Institute of Advanced Synthesis School of Chemistry and Molecular EngineeringNanjing Tech UniversityNanjing 211816China

N-alkylation of amines with alcohols is a promising green route for the synthesis of N-alkylamines, but the designation of highly active and stable heterogeneous catalysts remains one challenge. In this work, we initiated the application of zeolite-encapsulated noble metal nanoparticles(NPs) in the N-alkylation of amines with aromatic alcohols. Platinum(Pt) NPs were directly confined into the framework of BEA zeolite with tunable Si/Al molar ratios and Na^(+) contents. The champion catalyst afforded the extremely high turnover number(TON) of 6,176 and turnover frequency(TOF) of 3,390 h^(-1) plus stable recyclability and broad substrate compatibility. The Na ions modulated the electronic state of Pt NPs to reach a moderate Pt–H strength, which wellbalanced the two crucial steps of dehydrogenation and H-transfer and accounted for the high catalytic performance. The encapsulation of zeolites provided spatial satisfaction for the synergy effect above and enhanced the stabilization of Pt NPs.

关键词： heterogeneous catalysis zeolite amines N-alkylation nano catalysts

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Ionic liquid engineering enabled in-plane orientated 1D perovskite nanorods for efficient mixed-dimensional perovskite photovoltaics

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InfoMat 2023年第8期5卷 81-93页

作者： Fei Wang Dawei Duan Kang Zhou YZBXue Xiao Liang Xianfang Zhou Chuangye Ge Chao Zhou Jin Xiang Jiajie Zhu Quanyao Zhu Haoran Lin Yumeng Shi Yonghua Chen Gang Li Hanlin Hu Hoffmann Institute of Advanced Materials Shenzhen PolytechnicShenzhenthe People's Republic of China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhanthe People's Republic of China Oxford Instruments Technology(Shanghai)Co.Ltd. Shanghaithe People's Republic of China International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhenthe People's Republic of China School of Physics Science and Engineering Tongji UniversityShanghaithe People's Republic of China Key Laboratory of Flexible Electronics(KLoFE)&Institute of Advanced Materials(IAM) School of Flexible Electronics(Future Technologies)Nanjing Tech University(NanjingTech)Nanjingthe People's Republic of China Department of Electronic and Information Engineering Research Institute for Smart Energy(RISE)The Hong Kong Polytechnic UniversityKowloonHong Kongthe People's Republic of China

Mixed-dimensional engineering of perovskite material has been demonstrated as a facile and promising strategy to improve both photovoltaic performance and long-term stability of perovskite solar cells(PSCs).In this study,we report an in-plane preferred orientation of 1D perovskite induced by an ionic liquid(IL)of 1-(3-cyanopropyl)-3-methylimidazolium chloride(CPMIMCl)for the first time via sequential deposition approach,leading to a mixed dimensional perovskite thin *** generated one-dimensional(1D)CPMIMPbI3 with in-plane orientation resides at the grain boundaries of three-dimensional(3D)perovskite can be appreciably observed from the morphology level,leading to creation of high-quality films with large grain size with more efficient defect ***,the dispersion of IL in the bulk phase of perovskite material allows for the formation of 1D perovskite for multiple level passivation to inhibit non-radiative recombination and optimize carrier *** IL engineering strategy not only yields a mixed-dimensional perovskite heterostructure with in-plane orientation 1D perovskite nano-rods but also significantly improves the opto-electronic property with suppressed trap *** a result,the CPMIMCl-treated PSCs show an enhanced photovoltaic performance with a champion power conversion efficiency(PCE)up to 24.13%.More importantly,benefiting from the hydrophobicity of formed 1D perovskite and defects suppression,the corresponding PSC demonstrates an excellent longterm stability and maintain 97.1%of its pristine PCE at 25C under 50%RH condition over 1000 *** research provides an innovative perspective for employing the low dimensional engineering to optimize the performance and stability of photovoltaic devices.

关键词： 1D/3D perovskite ionic liquid perovskite solar cells stability

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Phosphorus-doped NiS_(2)electrocatalyst with a hybrid structure for hydrogen evolution

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Science China(Technological Sciences) 2022年第7期65卷 1506-1512页

作者： ZHOU Qi LIU HaoRui JIAO SunZhi FENG ChenChen State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of TechnologyLanzhou 730050China School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou 730050China College of Mechanical Engineering Longdong UniversityQingyang 745000China

In this article,P-NiS_(2)/Ni_(x)P electrocatalysts were synthesized by dealloying the Ni-Al precursor followed by phosphosulfide *** found that the hybrid structure of P-NiS_(2)/Ni_(x)P provides rich active sites for the surface hydrogen evolution reaction (HER),and the doping of P enhances the electronic conductivity of *** particular,the obtained electrode shows a low overpotential of 196 mV at 10 mA cm^(-2)and a small Tafel slope of only 110 mV dec^(-1)in the ***,longterm constant current electrolysis test experiments indicate that P-NiS_(2)/Ni_(x)P has good service *** research will help to open a new window on the design and fabrication of HER electrocatalysts.

关键词： nickle phosphosulfides hybrid structure hydrogen evolution reaction dealloying

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Ultralow Interfacial Thermal Resistance of Graphene Thermal Interface materials with Surface Metal Liquefaction

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Nano-Micro Letters 2023年第1期15卷 183-196页

作者： Wen Dai Xing-Jie Ren Qingwei Yan Shengding Wang Mingyang Yang Le Lv Junfeng Ying Lu Chen Peidi Tao Liwen Sun Chen Xue Jinhong Yu Chengyi Song Kazuhito Nishimura Nan Jiang Cheng-Te Lin Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Materials Technology and Engineering(NIMTE)Chinese Academy of SciencesNingbo 315201People’s Republic of China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China Institute of Advanced Technology Shandong UniversityJinan 250100People’s Republic of China Ningbo Institute of Materials Technology and Engineering(NIMTE) Chinese Academy of SciencesNingbo 315201People’s Republic of China The State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong University800 Dong Chuan RoadShanghai 200240People’s Republic of China Advanced Nano-Processing Engineering Lab Mechanical Systems EngineeringKogakuin UniversityTokyo 192-0015Japan

Developing advanced thermal interface materials(TIMs)to bridge heat-generating chip and heat sink for constructing an efficient heat transfer interface is the key technology to solve the thermal management issue of high-power semiconductor *** on the ultra-high basal-plane thermal conductivity,graphene is an ideal candidate for preparing high-performance TIMs,preferably to form a vertically aligned structure so that the basal-plane of graphene is consistent with the heat transfer direction of ***,the actual interfacial heat transfer efficiency of currently reported vertically aligned graphene TIMs is far from *** addition to the fact that the thermal conductivity of the vertically aligned TIMs can be further improved,another critical factor is the limited actual contact area leading to relatively high contact thermal resistance(20-30 K mm^(2) W^(−1))of the“solid-solid”mating interface formed by the vertical graphene and the rough chip/heat *** solve this common problem faced by vertically aligned graphene,in this work,we combined mechanical orientation and surface modification strategy to construct a three-tiered TIM composed of mainly vertically aligned graphene in the middle and micrometer-thick liquid metal as a cap layer on upper and lower *** on rational graphene orientation regulation in the middle tier,the resultant graphene-based TIM exhibited an ultra-high thermal conductivity of 176 W m^(−1) K^(−1).Additionally,we demonstrated that the liquid metal cap layer in contact with the chip/heat sink forms a“liquid-solid”mating interface,significantly increasing the effective heat transfer area and giving a low contact thermal con-ductivity of 4-6 K mm^(2) W^(−1) under packaging *** finding provides valuable guidance for the design of high-performance TIMs based on two-dimensional materials and improves the possibility of their practical application in electronic thermal management.

关键词： Vertically aligned graphene Liquid metal Surface modification Thermal interface materials

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