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| 1 | Metal-organic framework-derived Fe/Cu-substituted Co nanoparticles embedded in CNTs-grafted carbon polyhedron for Zn-air batteries显示文摘Metal-organic frameworks(MOFs)and MOF-derived materials have attracted great attention as alternatives to noble-metal based electrocatalysts owing to their intriguing structure properties,especially for high efficiency and stable oxygen reduction reaction(ORR).Herein,we employed a one-pot reaction to make a multimetal(Fe,Co,Cu,and Zn)mixed zeolitic imidazolate framework(MM-ZIF)via adopting a simple in situ redox reaction.Further pyrolysis of the target MM-ZIF,a highly porous carbon polyhedron(FC-C@NC)grafted with abundant carbon nanotubes was obtained,in which ultrasmall Co nanoparticles with partial lattice sites substituted by Fe and Cu were embedded.The obtained FC-C@NC possessed large surface area,highly porous structure,widely-spread metal active sites,and conductive carbon frameworks,contributing to outstanding ORR activity and long-term stability.It displayed superior tolerance to methanol crossover and exceeded the commercial Pt/C catalyst and most previously reported non-noble-metal catalysts.Impressively,the as-produced FC-C@NC-based zinc-air battery afforded an open-circuit potential of 1.466 V,a large specific capacity of 659.5 mAh/g,and a high gravimetric energy density of 784.3 Wh/kgZn,significantly outperforming the Pt/C-based cathode. | Kexin Zhang Yelong Zhang Qinghua Zhang Zibin Liang Lin Gu Wenhan Guo Bingjun Zhu Shaojun Guo Ruqiang Zou | 2020 | Carbon Energy2020，2，2： | 7 |
| 2 | Analysis and elimination of tri-band beacon interference with the fluxgate sensors onboard CSES显示文摘High precision magnetometer(HPM)is a magnetic field detection payload onboard China Seismo-Electromagnetic Satellite(CSES),including two fluxgate magnetometers(FGM)and a coupled dark state magnetometer(CDSM).Observations show that FGM appears to be influenced when tri-band beacon(TBB)is powered on and emits electromagnetic waves.The interference phenomenon is further validated based on both in-orbit observation analysis and electromagnetic compatibility(EMC)tests on the ground.A joint correction algorithm based on the least square fitting and first-order difference method according to scalar magnetometer data is proposed to eliminate the interference.The algorithm significantly improves the consistency of HPM data.After correction,the average scalar deviation error could be reduced from 9.0 nT to around 0.7 nT. | TONG YuQi CHENG BingJun MIAO YuanQing ZHOU Bin ZHU XingHong YANG YanYan LIU Ji GOU XiaoChen ZHANG YiTeng WANG JinDong LI Lei MAGNES Werner LAMMEGGER Roland POLLINGER Andreas ZEREN Zhima SHEN XuHui | 2021 | Science China(Technological Sciences)2021，64，10： | 1 |
| 3 | Nano-calcium silicate mineralized fish scale scaffolds for enhancing tendon-bone healing显示文摘Tendon-bone healing is essential for an effective rotator cuff tendon repair surgery,however,this remains a significant challenge due to the lack of biomaterials with high strength and bioactivity.Inspired by the high-performance exoskeleton of natural organisms,we set out to apply natural fish scale(FS)modified by calcium silicate nanoparticles(CS NPs)as a new biomaterial(CS-FS)to overcome the challenge.Benefit from its“Bouligand”microstructure,such FS-based scaffold maintained excellent tensile strength(125.05 MPa)and toughness(14.16 MJ/m^(3)),which are 1.93 and 2.72 times that of natural tendon respectively,allowing it to well meet the requirements for rotator cuff tendon repair.Additionally,CS-FS showed diverse bioactivities by stimulating the differentiation and phenotypic maintenance of multiple types of cells participated into the composition of tendon-bone junction,(e.g.bone marrow mesenchymal stem cells(BMSCs),chondrocyte,and tendon stem/progenitor cells(TSPCs)).In both rat and rabbit rotator cuff tear(RCT)models,CS-FS played a key role in the tendon-bone interface regeneration and biomechanical function,which may be achieved by activating BMP-2/Smad/Runx2 pathway in BMSCs.Therefore,natural fish scale-based biomaterials are the promising candidate for clinical tendon repair due to their outstanding strength and bioactivity. | Fei Han Tian Li Mengmeng Li Bingjun Zhang Yufeng Wang Yufang Zhu Chengtie Wu | 2023 | Bioactive Materials2023，，2： | 1 |
| 4 | A Comparative Analysis between Walt Disney and DreamWorks Based on the Theory of Semantic Roles of Argument Nominals Xu显示文摘Anchored on Yule’s categories of semantic roles,the present study examined the language of cartoon scripts with Chinese characters in Walt Disney’s Mulan 1 and 2 and DreamWorks’s Kung Fu Panda 1 and 2.Specifically it described the:(1)semantic features of the scripts in terms of semantic roles;and(2)similarities and differences in the language of the scripts semantically.Data analyzed were limited to 800 sentences which were randomly selected from the scripts of Mulan 1 and 2 and Kung Fu Panda 1 and 2.More specifically,200 lines per film were analyzed by taxonomizing the utterances in terms of identifying the semantic roles of argument nominals in each utterance.Results revealed the roles of agent and experiencer in the subject positions are dominant in contrast with the frequency of occurrences of theme,goal,location and source.In conclusion,the language of animated film is relatively simpler,literal and direct to suit the level of the target audience who are generally children.Finally,this research suggests that more linguistic levels should be conducted to explore the language features on cartoon movies in the future. | Xu Manping Zhu Jiasheng Ma Bingjun | 2021 | Journal of Linguistics and Education Research2021，4，2： | 0 |
| 5 | Metal-organic layers induce in situ nano-structuring of Cu surface in electrocatalytic CO_(2)reduction显示文摘Cu-based catalysts have attracted widespread attention for its capability in electrocatalytically reducing CO_(2)to a variety of products.Surface modification of Cu has become an interesting method for tuning the catalytic performance.Here,we use Zrbased metal-organic layers(MOLs)as the additive of the Cu surface,which enhanced the Faradaic efficiency of CH4 by two times as compared to the untreated polycrystalline Cu foil.Unexpectedly,the MOLs were found to induce in situ nano-structuring of the Cu foil surface within seconds in the electrolysis,as revealed by a combination of scanning electron microscopy(SEM),grazing incidence X-ray diffractometry(GIXRD),and linear sweep voltammetry(LSV)measurements.These surface changes are responsible for the shift of product selectivity.Control experiments suggest that negatively chargedμ3-O−on the Zr-cluster in the MOL might interact with CO-covered Cu surface and induce roughing and nano-structuring.This work reveals a potential role of additive on Cu to induce surface nano-structuring that tunes catalytic activity and selectivity. | Xinru He Jiawei Chen Yifei Xu Yan Shen Yifan Zeng Jieyu Zhu Bingjun Xu Cheng Wang | 2023 | Nano Research2023，16，4： | 0 |
| 6 | Enhancement of red emission assigned to inversion defects in ZnAl2O4:Cr3+ hollow spheres显示文摘ZnAl2O4:Cr3+hollow spheres composed of secondary nanoparticles with single spinel phase were fabricated using carbon templets.Monitoring the emission of 687 nm,two wide excitation bands attributed to the electrons of Cr3+transiting from 4A2g(4F)→4T1g(4F)and 4A2g(4F)→4T2g(4F)were observed.The broad excitation band at about 397 nm was asymmetric and consisted of two peaks,indicating that there was a trigonal distortion existing in the lattices.The intensity of all emitting peaks revealed sharp increasing trend with the sintering temperature increase,and the intensity of emission at 698 nm assigned to inversion defects was more intense than that of emission at 687 nm assigned to octahedral Cr3+ions in the undistorted spinel lattice.The samples with higher synthesized temperature revealed longer decay time,and the relative weightage of shorter decay time component decreased with the increase of sintering temperature,indicating that the surface defects decreased. | Dong Zhang Jingxin Chen Chunyu Du Bingjun Zhu Qingru Wang Qiang Shi Shouxin Cui Wenjun Wang | 2020 | Frontiers of Materials Science2020，14，1： | 0 |
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