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Simultaneously Improved Curing,Mechanical,Antioxidative Properties and Reduced ZnO Loading of Silica Filled NR Composites by Incorporation of Low-cost Crude Carbon Dots via Conventional Melt-milling Method

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Chinese Journal of Polymer Science 2024年第6期42卷 815-825页

作者： Chao-ying Sun Hai-Jun Ji li-wei li Hui Yang Xiao-Peng An Yi-Ping Chen ming-jian Han Can jiang li-Qun Zhang Peng yu Run-Guo Wang state key laboratory of organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing100029China School of Materials Science and Engineering Wuhan Institute of TechnologyWuhan430205China

Rubbers or elastomers play an important role in hi-tech technology and civilian daily life because of their unique and strategical ***,the rubber additives are essential components for rubbers’practical ***,developing novel multifunctional additives has attracted increasing research *** this work,low-cost crude carbon dots(CCDs)were used as multifunctional additives for natural rubber/silica system(without any additional modification)through industrial compatible melt-mixing *** results revealed that the CCDs could disperse well in the NR/silica system,and they could not only endow the rubber compound with excellent anti-aging capability due to CCDs’radical scavenging activity because of their plenty of nitrogen-containing species,but also improve the curing rate and mechanical performance of the rubber ***,the CCDs could reduce the rolling resistance of the rubber composites(tanδvalue at 7%strain of the rubber composite could be decreased by 34%),which is promising for the application of energy-saving tire ***,the addition of CCDs could effectively reduce the ZnO dosage by at least 40%in the rubber composite without deteriorating its ***,this work provides valuable guidance to develop novel cheap yet effective additives for the elastomer.

关键词： Natural rubber Crude carbon dots Antioxidant ZnO reduction Vulcanization

Evolution of MnO–SiO2–Al_(2)O_(3)–MgO inclusions during heat treatment at 1100℃

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Journal of Iron and Steel Research International 2024年第5期31卷 1221-1231页

作者： Xu-bo Lei jian-li li Qiang Zeng Hang-yu Zhu yue yu The state key laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan430081HubeiChina Hubei Provincial key laboratory for New Processes of Ironmaking and Steelmaking Wuhan University of Science and TechnologyWuhan430081HubeiChina key laboratory for Ferrous Metallurgy and Resources Utilization of ministry of Education Wuhan University of Science and TechnologyWuhan430081HubeiChina

To investigate the evolutionary behavior of the MnO–SiO_(2)–Al_(2)O_(3)–MgO inclusions during heat treatment,water quenched samples were isothermally held at 1100°C for 120 min in Ar and air atmosphere,and the obtaining samples were analyzed by X-ray diffraction,scanning electron microscopy and energy dispersive *** showed that 3MnO·Al_(2)O_(3)·3SiO_(2)and MnO·SiO_(2)were detected in the 5 wt.%MgO system after isothermal holding in Ar atmosphere,while MgO·Al_(2)O_(3),MnO·SiO_(2)and Mn7O8·SiO4 were detected in air *** evolutionary behavior of the 10,15 and 20 wt.%MgO systems after isothermal holding in different atmosphere were *** affected the solid phase transformation of the low MgO content *** calculation results of FactSage 8.1 showed that MgO·Al_(2)O_(3)was formed in the 5 wt.%MgO system with air *** solid phase transformation was accompanied by grain coarsening during the isothermal holding *** differences in the solid phase transformation in different atmosphere of the 5 wt.%MgO system indicated that it was a gas-phase transport grain coarsening *** enrichment of Al element in the liquid phase region at the grain edges,the homogeneous distribution of Mg element and the disappearance of the liquid phase within the crystal revealed that other MgO content systems were liquid–solid transport grain coarsening mechanism.

关键词： Evolution Glassy phase Inclusion Heat treatment MgO·Al_(2)O_(3)

Mitochondria-targeted Janus mesoporous nanoplatform for tumor photodynamic therapy

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Chinese Chemical Letters 2024年第2期35卷 544-547页

作者： min dong Rui Tang Jing li Jiajia Zhao yu Wang lin Ouyang wei Lu Jun Tao Meng Dang yuxia Tang Zhaogang Teng key laboratory for organic Electronics & Information Displays and jiangsu key laboratory for Biosensors Institute of Advanced MaterialsJiangsu National Synergetic Innovation Centre for Advanced MaterialsNanjing University of Post and TelecommunicationsNanjing 210023China laboratory of Molecular Imaging Department of RadiologyThe First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029China Department of Radiology The 909th HospitalSoutheast HospitalSchool of MedicineXiamen UniversityZhangzhou 363000China state key laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringInstitute of Functional MaterialsDonghua UniversityShanghai 201620China

Photodynamic therapy(PDT)is an effective treatment method for *** the specifically accumulated of photosensitizer was very difficult in the tumor site,which greatly limited the efficacy of ***,mitochondria-targeted Janus mesoporous nanoplatform(JPMO-Pt-CTPP-ZnPc)for PDT was prepared,the nanoplatform has uniform size(275 nm)and good dispersion and *** confocal laser scanning microscopy(CLSM)revealed the signal of ZnPc of JPMO-Pt-CTPP-ZnPc were higher than JPMO-Pt-ZnPc in tumor cells,and flow cytometry results showed the cell uptake efficiency of JPMO-Pt-CTPP-ZnPc was 2.5-fold higher than that of *** revealed the modification of CTPP significantly improves the targeting ability of the *** vitro anti-tumor experiment showed the JPMO-Pt-CTPP-ZnPc significantly inhibited the growth of tumor cells upon the irradiation of low-power laser,and the survival rate of cells incubated with 60μg/mL JPMO-Pt-CTPP-ZnPc was only 3%.Simultaneously,compared with JPMO-Pt-ZnPc(not modified with mitochondria targeting molecules CTPP),the PDT efficacy of JPMO-Pt-CTPP-ZnPc was significantly better,as it has targeted mitochondria in cells.

关键词： Mesoporous materials Janus particle Photodynamic therapy Mitochondria targeting Tumor treatment

Mandarin fish von Hippel-lindau protein regulates the NF-κB signaling pathway via interaction with IκB to promote fish ranavirus replication

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Zoological Research 2024年第5期45卷 990-1000页

作者： Zhi-min li Xiao-wei Qin Qi Zhang jian He min-Cong liang Chuan-Rui li Yang yu Weng-Hui liu Shao-Ping Weng jian-Guo He Chang-Jun Guo School of Marine Sciences State Key Laboratory for BiocontrolSouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Guangdong Province Key Laboratory of Aquatic Economic Animals&Guangdong Provincial Observation and Research Station for Marine Ranching of the Lingdingyang BaySun Yat-sen UniversityGuangzhouGuangdong 510275China Guangdong laboratory for lingnan Modern Agriculture South China Agricultural UniversityGuangzhouGuangdong 510640China

The von Hippel-lindau tumor suppressor protein(VHL),an E3 ubiquitin ligase,functions as a critical regulator of the oxygen-sensing pathway for targeting hypoxia-inducible *** evidence suggests that mammalian VHL may also be critical to the NF-κB signaling pathway,although the specific molecular mechanisms remain ***,the roles of mandarin fish(Siniperca chuatsi)VHL(scVHL)in the NF-κB signaling pathway and mandarin fish ranavirus(MRV)replication were *** transcription of scVHL was induced by immune stimulation and MRV infection,indicating a potential role in innate ***-luciferase reporter gene assays and reverse transcription quantitative PCR(RT-qPCR)results demonstrated that scVHL evoked and positively regulated the NF-κB signaling *** with NF-κB signaling pathway inhibitors indicated that the role of scVHL may be mediated through scIKKα,scIKKβ,scIκBα,or ***-immunoprecipitation(Co-IP)analysis identified scIκBαas a novel target protein of ***,scVHL targeted scIκBαto catalyze the formation of K63-linked polyubiquitin chains to activate the NF-κB signaling *** MRV infection,NF-κB signaling remained activated,which,in turn,promoted MRV *** findings suggest that scVHL not only positively regulates NF-κB but also significantly enhances MRV *** study reveals a novel function of scVHL in NF-κB signaling and viral infection in fish.

关键词： VHL NF-κB IκBα Ranavirus Mandarin fish

MXene key Composites:A New Arena for Gas Sensors

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Nano-Micro Letters 2024年第10期16卷 350-391页

作者： Yitong Wang yuhua Wang min jian Qinting jiang Xifei li Hubei Province key laboratory of Systems Science in Metallurgical Process Wuhan University of Science and TechnologyWuhan 430081People's Republic of China key Materials and Components of Electrical Vehicles for Overseas Expertise Introduction Center for Discipline Innovation Institute of Advanced Electrochemical Energy and School of Materials Science and EngineeringXi'an University of TechnologyXi'an 710048People's Republic of China College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108FujianPeople's Republic of China

With the development of science and technology,the scale of industrial production continues to grow,and the types and quantities of gas raw materials used in industrial production and produced during the production process are also constantly *** gases include flammable and explosive gases,and even contain toxic ***,it is very important and necessary for gas sensors to detect and monitor these gases quickly and *** recent years,a new two-dimensional material called MXene has attracted widespread attention in various *** abundant surface functional groups and sites,excellent current conductivity,tunable surface chemistry,and outstanding stability make them promising for gas sensor *** the birth of MXene materials,researchers have utilized the efficient and convenient solution etching preparation,high flexibility,and easily functionalize MXene with other materials to pre-pare composites for gas *** has opened a new chapter in high-performance gas sensing materials and provided a new approach for advanced sensor ***,previous reviews on MXene-based composite materials in gas sensing only focused on the performance of gas sensing,without systematically explaining the gas sensing mechanisms generated by different gases,as well as summarizing and predicting the advantages and disadvantages of MXene-based composite *** article reviews the latest progress in the application of MXene-based composite materials in gas ***,a brief summary was given of the commonly used methods for preparing gas sens-ing device structures,followed by an introduction to the key attributes of MXene related to gas sensing *** article focuses on the performance of MXene-based composite materials used for gas sensing,such as MXene/graphene,MXene/Metal oxide,MXene/Transition metal sulfides(TMDs),MXene/Metal-organic framework(MOF),MXene/*** summarizes the advantages and disad

关键词： MXene Compound material Gas sensor Gas sensitive preparation Gas sensitivity performance

Observation of transition from superfluorescence to polariton condensation in CsPbBr3 quantum dots film

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light(Science & Applications) 2024年第2期13卷 316-324页

作者： Danqun mao linqi Chen Zheng Sun min Zhang Zhe-yu Shi Yongsheng Hu Long Zhang jian Wu Hongxing dong wei Xie Hongxing Xu state key laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200241China key laboratory of Materials for High-Power Laser Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences201800 ShanghaiChina Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuanShanxi 030006China Chongqing key laboratory of Precision Optics Chongqing Institute of East China Normal UniversityChongqing 401121China CAS Center for Excellence in Ultraintense Laser Science Shanghai 201800China School of Physics and Technology Center for Nanoscience and NanotechnologyWuhan UniversityWuhan 430072China

The superfluorescence effect has received extensive attention due to the many-body physics of quantum correlation in dipole gas and the optical applications of ultrafast bright radiation field based on the cooperative quantum ***,we demonstrate not only to observe the superfluorescence effect but also to control the cooperative state of the excitons ensemble by externally applying a regulatory dimension of coupling light fields.A new quasi-particle called cooperative exciton-polariton is revealed in a light-matter hybrid structure of a perovskite quantum dot thin film spin-coated on a Distributed Bragg *** the nonlinear threshold,polaritonic condensation occurs at a nonzero momentum state on the lower polariton branch owning to the vital role of the synchronized *** phase transition from superfluorescence to polariton condensation exhibits typical signatures of a decrease of the linewidth,an increase of the macroscopic coherence as well as an accelerated radiation decay *** findings are promising for opening new potential applications for super-brightness and unconventional coherent light sources and could enable the exploitation of cooperative effects for quantum optics.

关键词： quantum condensation polar

Synergistic effect of homojunction and Ohmic junctions in CdS boosting spatial charge separation for U(VI)photoreduction

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Nano Research 2024年第8期17卷 6849-6859页

作者： Haonan Pei Zhimin dong Zifan li jian Huang yuanping jiang Zuojia li lin Xu Xiaohong Cao yunhai liu Zhibin Zhang Guoping Yang state key laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013China

Photo-excited holes usually migrate to the surface of the catalyst and rapidly recombine with electrons,reducing the photocatalytic reduction efficiency of uranium(VI)(U(VI))in radioactive ***,we employed a straightforward synthesis technique to meticulously shape and manipulate the morphology of CdS to precisely construct CdS-Ni dandelion-like composites with different aspect ***,the introduction of crystal facet homojunction with Ohmic contacts in this unique morphology siqnificantly improves the photocatalytic ***-dependent photoluminescence spectroscopy(TD-PL)verifies that the composite material positively effects on the dissociation of *** 30 min,CdS(002)/(102)/Ni-4 removed 98% of the uranium content in solution and showed a rather high apparent rate constant(0.114 min^(−1)),which was 4.8 times higher than that of CdS nanospheres(NSs)(0.024 min^(−1))and 3.7 times higher than that of CdS nanorods(NRs)(0.031 min^(−1)).This is much higher the most reported photocatalysts for U(VI)*** after 5 consecutive cycles,the photocatalytic efficiency only decreased by 7%.This offers a fresh perspective on constructing a new perspective for building a green,efficient,and multi mechanism collaborative catalytic system to remediate environmental pollution.

关键词： uranium dandelion-shaped axial size effect crystal facet homojunction ohmic contact

In situ tracking of the lithiation and sodiation process of disodium terephthalate as anodes for rechargeable batteries by Raman spectroscopy

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Nano Research 2024年第1期17卷 245-252页

作者： Xiu-Mei lin Chong Han Xin-Tao Yang Jia-Sheng lin wei-Qiang Yang Hong-Xu Guo Yao-Hui Wang Jin-Chao dong jian-Feng li Department of chemistry and Environment Science Fujian Province University Key Laboratory of Analytical ScienceMinnan Normal UniversityZhangzhou 363000China College of Energy College of Chemistry and Chemical EngineeringCollege of MaterialsState Key Laboratory of Physical Chemistry of Solid SurfacesiChEMXiamen UniversityXiamen 361005China Institute of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018China

organic compounds represent an appealing group of electrode materials for rechargeable batteries due to their merits of biomass,sustainability,environmental friendliness,and *** terephthalate(Na_(2)C_(8)H_(4)O_(4),Na_(2)TP),an organic salt with a theoretical capacity of 255 mAh·g^(-1),is electroactive towards both lithium and ***,its electrochemical energy storage(EES)process has not been directly observed via in situ characterization techniques and the underlying mechanisms are still under ***,in situ Raman spectroscopy was employed to track the de/lithiation and de/sodiation processes of *** appearance and then disappearance of the–COOli Raman band at 1625 cm^(-1) during the de/lithiation,and the increase and then decrease of the–COONa Raman band at 1615 cm^(-1) during the de/sodiation processes of Na2TP elucidate the one-step with the 2li+or 2Na+transfer *** also found that the inferior cycling stability of Na2TP as an anode for sodium-ion batteries(SIBs)than lithium-ion batteries(liBs)could be due to the larger ion radium of Na+than li+,which results in larger steric resistance and polarization during *** Na2TP,therefore,shows greater changes in spectra during de/sodiation than de/*** expect that our findings could provide a reference for the rational design of organic compounds for EES.

关键词： disodium terephthalate(Na_(2)C_(8)H_(4)O_(4) Na2TP) in situ Raman spectroscopy de/lithiation de/sodiation mechanisms

MicroED as a powerful technique for the structure determination of complex porous materials

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Chinese Journal of Structural chemistry 2024年第3期43卷 41-54页

作者： Chao Ma Cong lin jian li state key laboratory of Coordination chemistry School of Chemistry and Chemical EngineeringNanjing UniversityNanjing210023China Department of applied Biology and Chemical Technology The Hong Kong Polytechnic UniversityKowloonHong Kong China

Porous materials have garnered significant attention in recent *** the intrinsic relationship between their structures and properties requires precise knowledge of their atomic ***-crystal X-ray diffraction(SCXRD)has traditionally been the primary method for elucidating such structures,but it demands large,high-quality crystals,often exceeding 5μm in *** growth of these crystals can be a time-consuming process,especially for one-and two-dimensional *** explore structures at the nanoscale,MicroED(microcrystal electron diffraction(ED))offers unprecedented insights into the realm of *** revolutionary technique enables researchers to uncover intricate details within nanoscale structures,promising to reshape our fundamental understanding of *** this review,we delve into the applications of MicroED in the study of various porous materials,including zeolites,metal-organic frameworks(MOFs),and covalent organic frameworks(COFs).We emphasize the pivotal role of MicroED in nanomaterial characterization,enabling precise crystallographic analysis and phase identification.

关键词： Atomic structure MicroED Porous materials Three-dimensional electron diffraction