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A novel Gd-based phosphor NaGdGeO_(4):Bi^(3+),Li^(+)with super-long ultraviolet-A persistent luminescence

Journal of Rare Earths 2022年第9期40卷 1424-1431,I0004页

作者： Lin Liu Kexin Yu Liyan Ming Yangyang Sheng Shenghui Zheng Liang Song Junpeng Shi Yun Zhang Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth MaterialsHaixi InstituteChinese Academy of SciencesXiamen 361021China University of the Chinese Academy of Sciences Beijing 100049China Institute of Urban Environment Chinese Academy of SciencesXiamen 361021China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341000China

In very recent years,ultraviolet(UV)persistent luminescent materials(PLMs)have attracted widespread attention due to their potential biological ***,owing to the lack of suitable emitters and hosts,the design and development of excellent UV PLMs remain ***,we report a new Gd-based PLM NaGdGeO_(4):Bi^(3+)with super-long UVA persistent luminescence(PersL).By further codoping Li^(+)ions to increase the concentration of traps,the UVA PersL intensity of NaGdGeO_(4):Bi^(3+)is increased by 5.5 *** optimal NaGdGeO_(4):Bi^(3+),Li^(+)exhibits excellent UVA PersL and can persist for more than 200 ***,the phosphor NaGdGeO_(4):Bi^(3+),Li^(+)also exhibits photostimulated property with a red LED or NIR laser excitation after the long-term decay,and can be activated by *** promising Gd-based UVA PLM is expected to have potential applications in biomedicine through triggering photocatalysts or photosensitizers by its UVA PersL to achieve photodynamic therapy and its potential ability of magnetic resonance(MR)imaging due to Gd^(3+)ions as MR imaging probe contained in the host NaGdGeO_(4).

关键词： Ultraviolet Persistent luminescence Magnetic resonance imaging Photodynamic therapy Co-doping Rare earths

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Porous Single-Crystalline Monolith to Enhance Catalytic Activity and Stability

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Research 2022年第4期2022卷 347-358页

作者： Xiaoyan Yu Fangyuan Cheng Xiuyun Duan Kui Xie Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002China University of Chinese Academy of Sciences Bejing 100049China Fujian Science Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou350108 FujianChina Key Laboratory of Design e Assembly of Functional Nanostructures Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002China

Engineering the catalytic activity and stability of materials would require the identification of the structural features that can tailor active sites at *** single crystals combine the ordered lattice structures and disordered interconnected pores,and they would therefore provide the advantages of precise structure features to identify and engineer the active sites at ***,we fabricate porous single-crystalline vanadium nitride(VN)at centimeter scale and further dope Fe(Fe0.1V0.9N)and Co(Co0.1V0.9N)in lattice to engineer the active sites at *** demonstrate that the active surface is composed of unsaturated coordination of V-N,Fe-N,and Co-N structures which lead to the generation of high-density active sites at the porous single-crystalline monolith *** interconnected pores aid the pore-enhanced fluxion to facilitate species diffusion in the porous *** the nonoxidative dehydrogenation of ethane to ethylene,we demonstrate the outstanding performance with ethane conversion of 36%and ethylene selectivity of 99%at 660°*** stability as a result of their single-crystalline structure,the monoliths achieve the outstanding performance without degradation being observed even after 200 hours of a continuous operation in a monolithic *** work not only demonstrates the effective structural engineering to simultaneously enhance the stability and overall performance for practically useful catalytic materials but also provide a new route for the element doping of porous single crystals at large scale for the potential application in other fields.

关键词： surface crystalline stability

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Enhancing low-temperature performance and suppressing cathode dissolution in aqueous zinc-ion batteries:local structure and electrochemical crosstalk control of V_(2)O_(5)

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Science China Materials 2025年第2期68卷 503-514页

作者： Jun-Peng Wang Jia Liu Fu-Da Yu Lan-Fang Que Ming-Chun Li Can-Zhong Lu Yiming Xie Engineering Research Center of Environment-Friendly Functional Materials Ministry of EducationInstitute of Materials Physical ChemistryHuaqiao UniversityXiamen 361021China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth MaterialsHaixi InstitutesChinese Academy of SciencesXiamen 361021China CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University of Chinese Academy of Sciences Beijing 100049China

Achieving an in-depth understanding of the nexus between temperature and phase transitions is paramount for advancing the electrochemical efficiency of aqueous zinc ion ***,the intricacies of electrochemical interactions,particularly those associated with the structural evolution over extended periods,remain *** this research,we leverage V_(2)O_(5) as an initial structural model of crystals to demystify the kinetics of electrode reactions and the decay mechanism of global electrochemical degradation by meticulously controlling the crystal defects via applying different mechanical grounding *** is noted that the grounding V_(2)O_(5)(GVO)can exhibit a stable crystal structure that suppresses the dissolution/shuttling of vanadium and mitigates Zn anodes by-products caused by electrochemical ***,the GVO is utilized as the cathode material,achieving excellent Zn storage capacity at both room temperature and low temperatures,e.g.,380 and 246 mA h g^(−1) at room temperature and−20℃,***,the GVO cathode retains a specific capacity of 160 mA h g^(−1) with a capacity retention rate of 99%after 1500 cycles at−20℃ and 1 A g^(−1).This work provides a novel insight into the electrochemical crosstalk behavior of aqueous zinc-ion batteries(AZIBs)in a wide range of temperatures.

关键词： aqueous Zn-ion batteries Zn3(OH)_(2)V_(2)O_(7)·2H_(2)O room-/low-temperature performance mechanochemical reactions vanadium dissolution

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Amorphous urchin-like copper@nanosilica hybrid for efficient CO_(2) electroreduction to C2+ products

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Journal of Energy Chemistry 2021年第10期30卷 290-296,I0009页

作者： Rui Yang Zipeng Zeng Zhen Peng Jiafang Xie Yiyin Huang Yaobing Wang CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsState Key Laboratory of Structural ChemistryKey Laboratory of Optoelectronic Materials Chemistry and PhysicsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002FujianChina Dalian National Laboratory for Clean Energy Dalian 116023LiaoningChina

Currently most of research efforts for selective electrocatalysis CO_(2) reduction to C2+products have relied on crystalline Cu-based catalysts;amorphous Cu with abundant low-coordinated atoms holds greater promise for this conversion yet remains relatively *** we report an amorphous urchin-like Cu@nanosilica hybrid synthesized by electrostatic coupling Si polyanions with Cu salt in hydrothermal *** Cu@nanosilica electrocatalyst displays excellent CO_(2) electroreduction activity and selectivity with a Faradic efficiency of 70.5%for C2+product production,and higher stability compared to the crystalline Cu *** solar-driven CO_(2) electrolysis yields an energy efficiency of 20%for C2+product *** study reveals that the urchin-like Cu@nanosilica catalyst with amorphous Cu/Cu^(+)dispersion enhances CO_(2) adsorption and activation to facilitate generation of CO_(2)^(-)*and possible CO^(*)intermediates,and suppresses hydrogen evolution *** combined effects of both aspects promote efficient C2+product production from CO_(2) electroreduction.

关键词： Copper Amorphous Catalyst CO_(2)electroreduction C2+products

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Deciphering the potassium storage phase conversion mechanism of phosphorus by combined solid-state NMR spectroscopy and density functional theory calculations

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Journal of Energy Chemistry 2023年第4期79卷 45-53页

作者： Huixin Chen Lingyi Meng Hongjun Yue Chengxin Peng Qiaobao Zhang Guiming Zhong Ding Chen State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan UniversityChangsha 410082HunanChina CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002FujianChina Laboratory of Advanced Spectro-electrochemistry and Li-ion Batteries Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth MaterialsHaixi InstitutesChinese Academy of SciencesXiamen 361021FujianChina Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005FujianChina School of Materials Science and Chemistry University of Shanghai for Science and TechnologyShanghai 200093China

Phosphorus is the potential anode material for emerging potassium-ion batteries(PIBs)owing to the highest specific capacity and relatively low operation ***,the reversible delivered capacities of phosphorus-based anodes,in reality,are far from the theoretical capacity corresponding to the formation of K3P ***,their underlying potassium storage mechanisms remain poorly *** address this issue,for the first time,we perform high-resolution solid-state31P NMR combined with XRD measurements,and density functional theory calculations to yield a systemic quantitative understanding of(de)potassiation reaction mechanism of phosphorus *** explicitly reveal a previously unknown asymmetrical nanocrystalline-to-amorphous transition process via rP←→(K_(3)P_(11),K_(3)P_(7),beta-K_(4)P_(6))←→(alpha-K4P6)←→(K_(1-x)P,KP,K_(4-x)P3,K_(1+x)P)←→(amorphous K4P3,amorphous K3P)that are proceed along with the electrochemical potassiation/depotassiation ***,the corresponding KP alloys intermediates,such as the amorphous phases of K_(4)P_(3),K_(3)P,and the nonstoichiometric phases of“K_(1-x)P”,“K_(1+x)P”,“K_(4-x)P_(3)”are experimentally detected,which indicating various complicated K-P alloy species are coexisted and evolved with the sluggish electrochemical reaction kinetics,resulting in lower capacity of phosphorus-based *** findings offer some insights into the specific multi-phase evolution mechanism of alloying anodes that may be generally involved in conversion-type electrode materials for PIBs.

关键词： Red phosphorus Phase conversion Solid-state NMR Potassium ion batteries

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Enhanced CO2 Electrolysis with Metal-oxide Interface Structures

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Chinese Journal of Structural Chemistry 2021年第1期40卷 31-41,1页

作者： XU Ze-Tong XIE Kui College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China

The ever-decreasing fossil fuels and the increasing greenhouse effect have caused substantial *** oxide electrolyser cell(SOEC)with La_(0.75)Sr_(0.25)Cr_(0.5 )Mn_(0.5)O_(3-δ)(LSCM)as a cathode was used for CO_(2) electrolysis to *** this work,the metal-oxide interface was constructed on the LSCM framework by in-situ exsolution and impregnation,and the uniform distribution of metal nanoparticles on the LSCM framework was confirmed by spectroscopy techniques and electron microscopy *** existence of three-phase boundary promoted the absorption and electrolysis of CO_(2).(La_(0.75) Sr_(0.25))0.9(Cr_(0.5 )Mn_(0.5))_(0.9)(Ni_(0.5) Cu_(0.5))_(0.1) O_(3-δ)(LSCMNC)showed the best electrolytic CO_(2) performance at 850℃and exhibited excellent electrocatalytic activity after 100 hours of long-term testing and 8 redox cycles.

关键词： solid oxide electrolyser cell LSCM metal nanoparticles CO_(2)electrolysis

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Surface Oxidation of Single-walled-carbon-nanotubes with Enhanced Oxygen Electroreduction Activity and Selectivity

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Chinese Journal of Structural Chemistry 2021年第5期40卷 533-539,527页

作者： CUI Ya-Qi XU Jiao-Xing WANG Mei-Lin GUAN Lun-Hui College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350108China

Electrochemical oxygen reduction reaction(ORR) with 2-electron process is an alternative for decentralized H_(2)O_(2) production, but it remains high challenging to develop highly active and selective catalysts for this process. In this work, we present a selective and efficient nonprecious electrocatalyst, prepared through an easily scalable mild oxidation of single-walled carbon nanotubes(SWNTs) with different oxidative acids including sulfur acid, nitride acid and mixed sulfuric/nitric acids, respectively. The high-degree oxidized SWNTs treated by mixed acids exhibit the highest activity and selectivity of electroreduction of oxygen to synthesize H_(2)O_(2) at low overpotential in alkaline and neutral media. Spectroscopic characterizations suggested that the C–O is vital for catalyzing 2-electron ORR, providing an insightful understanding of defected carbon surface as the active catalytic sites for 2-electron ORR.

关键词： electrocatalysts hydrogen peroxide production oxygen reduction reaction

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Cr^(3+)/Y^(3+)co-doped persistent luminescence nanoparticles with biological window activation for in vivo repeatable imaging

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Journal of Rare Earths 2022年第9期40卷 1389-1398,I0002页

作者： Huimin Jiang Lin Liu Kexin Yu Xianggui Yin Shenghui Zheng Liang Song Junpeng Shi Yun Zhang College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth MaterialsHaixi InstituteChinese Academy of SciencesXiamen 361021China Institute of Urban Environment Chinese Academy of SciencesXiamen 361021China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341000China

The near-infrared(NIR)persistent luminescence materials(PLMs)can remain long-lasting luminescence after removal of the excitation light,which permits bioimaging with high sensitivity owing to the absence of background fluorescence interference from in situ ***,the NIR PLMs have aroused intensive research interest in ***,the optimal excitation wavelength of current NIR PLMs is located in the ultraviolet region with shallow tissue penetration,making it difficult to activate effectively in vivo,and seriously hindering their further application in ***,we report a novel kind of Cr^(3+)ions and Y^(3+)ions co-doped NIR PLM,Zn_(1.3)Ga_(1.4)Sn_(0.3)O_(4):Cr^(3+),Y^(3+)(ZGSCY),which emits NIR persistent luminescence at 696 *** with Zn_(1.3)Ga_(1.4)Sn_(0.3)O_(4):Cr^(3+)(ZGSC)excited by the light with a wavelength in the biological window(>650 nm),after being co-doped with Y^(3+)ions,the NIR persistent luminescence performance of ZGSCY is significantly improved because of the increase of trap concentration in the *** addition,we synthesized ZGSCY nanoparticles(NPs)by the combustion method,which exhibit excellent optical properties after being excited by the light with a wavelength in the biological *** surface modification with PEG,the ZGSCY NPs present low ***,due to the co-doping of Y^(3+)ions,the signal-to-noise ratio(SNR)of ZGSCY NPs in vivo imaging is about 1.8 times higher than that of the ZGSC ***,the rechargeable in vivo imaging and passive tumor-targeted imaging are successfully achieved by activating with a lightemitting diode(LED,659 nm)after intravenous injection of ***,this kind of NIR PLM with high excitation efficiency performance in the biological window is expected to promote its biomedical application in deep tissues.

关键词： Near-infrared Persistent luminescence Co-doping Biological window In vivo imaging Rare earths

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Boosting Stable and Fast Potassium Storage of Iron Sulfide through Rational Yolk-Shell design and Ni Doping

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Chinese Journal of Structural Chemistry 2022年第5期41卷 30-36页

作者： Yanmei Gan Jiajie Zhu Qixin Zhang Chaoying Wang Lunhui Guan Yi Zhao College of Chemistry Fuzhou UniversityFuzhou 350108China The Straits Institute of Flexible Electronics(SIFE Future Technologies)Fujian Normal UniversityFuzhou 350117China CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350108China School of Physics Science and Engineering Tongji UniversityShanghai 200092China

Metal sulfides have been regarded as promising anodes for potassium-ion batteries(PIBs)due to their high theoretical capacities,while the performance is limited by their intrinsic poor conductivity and large volume fluctuation during the insertion/extraction of large potassium ***,the battery performance of iron sulfide anode is significantly enhanced through yolk-shell(Y-S)structure design and nickel doping,aiming to realize good structure stability and superior electron/ion *** potassium storage,as-prepared Y-S Ni-FeS_(2)@C shows excellent cyclic performance and sustains high capacities of 328 mA h g^(-1)after 100 cycles at 0.2 A g^(-1)and 226 mA h g^(-1)after 1000 cycles at 1 A g^(-1).Especially,it displays a superior rate capacity of 200 mA h g^(-1)at 20 A g^(-1),higher than that of Y-S FeS_(2)@C and most as-reported metal sulfide anodes for *** experimental analysis and theoretical calculation illuminate the effect of Ni-doping on decreasing the particle size of iron sulfide and enhancing the ion/electron transport ability,thus accounting for the exceptional rate capability of Y-S Ni-FeS_(2)@C composite.

关键词： FeS_(2) Ni-doping yolk-shell structure anode potassium-ion batteries

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A novel Li^(+)-doped MgLuGaO_(4)phosphor with stable white-light emission and long persistent luminescence

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Journal of Rare Earths 2022年第9期40卷 1432-1436,I0004页

作者： Yangyang Sheng Liyan Ming Lin Liu Peng Lin Junpeng Shi Liang Song Yun Zhang Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth MaterialsHaixi InstituteChinese Academy of SciencesXiamen 361021China University of the Chinese Academy of Sciences Beijing 100049China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341000China College of Rare Earths University of Science and Technology of ChinaHefei 230026China

In recent years,white persistent luminescence materials have received extensive attention due to the potential application of white light in the field of plant growth *** white persistent luminescence materials synthesized by traditional methods either have strict requirements on the concentration of doped ions or cannot produce white light continuously and stably due to different decay rates of various emission centers,which limits their further *** our work,we successfully synthesized a novel Li^(+)-doped MgLuGaO_(4)phosphor with stable white-light emission and long persistent *** broadband emission of MgLuGaO_(4):Li^(+)is mainly located at 350-650 nm,which has no change at different decay time,showing stable white-light *** persistent luminescence intensity is increased by 3.8 times and the persistent luminescence time is extended from 24 h to more than 36 h by doping Li+*** white-light and long persistent luminescence emission make it promising to be used in plant growth lighting.

关键词： Persistent luminescence Stable white-light emission Novel Li^(+)-doped phosphor Rare earths Plant growth lighting

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