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Two Polyoxometalate-based Host-guest Compounds:Synthesis,Crystal Structure and Catalytic Performance

Chinese Journal of Structural Chemistry 2021年第12期40卷 1655-1660,1554页

作者： WANG Song-Xia WANG Sa-Sa WU Xiao-Yuan YANG Wen-Bin LU Can-Zhong Fujian Normal University Fuzhou 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 University of Chinese Academy of Sciences Beijing 100049China

Two polyoxometalate-based host-guest compounds,(HL1)2(HPW12O40)〜11H2O(1),(HL2)3(PWi2O40)·3H2O(2)(L_(1)=guanine,L_(2)=2-(1H-1,2,4-triazol-3-yl)pyridine),were synthesized under hydrothermal conditions and characterized by EA,PXRD,TG,FT-IR and X-ray single-crystal *** 1 crystallizes in trigonal space group P-3 with a=18.2917(5),b=18.2917(5),c=13.5441(5)A,V=3924.5(3)A^(3),Z=3,Mr=3383.26 g/mol,pcak=4.036 g/cm^(3),F(000)=4137,=48.532 mm^(-1),GOOF=1.062,the final R=0.0713 and wR=0.1865 for 9037 observed reflections with I>2σ(I).Compound 2 crystallizes in trigonal space group R-3 with a=19.0017(6),b=19.0017(6),c=25.6361(9)A,V=8016.2(6)A^(3),Z=6,Mr=3372.45 g/mol,p_(calc)=4.188 g/cm,F(000)=8886,μ=47.644 mm^(-1),GOOF=1.077,the final R=0.0380 and wR=0.0976 for 5904 observed reflections with I>2σ(I).These two compounds can catalyze selective oxidation of aniline with H2O2 as the *** optimal conditions,the conversion of aniline with compound 1 can reach up to 91.25%,and the selectivity of nitrosobenzene is 78.81%.

关键词： polyoxometalates catalytic oxidation aniline nitrosobenzene

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Approaching Superior Potassium Storage of Carbonaceous Anode Through a Combined Strategy of Carbon Hybridization and Sulfur Doping

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Energy & Environmental Materials 2022年第3期5卷 944-953页

作者： Qianqian Yao Yanmei Gan Zuju Ma Xiangying Qian Suzhi Cai Yi Zhao Lunhui Guan Wei Huang Fujian Cross Strait Institute of Flexible Electronics(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 Environmental and Materials Engineering Yantai UniversityYantai 264005China Shaanxi InstituteofFlexibleElectronics(SIFE) NorthwesternPolytechnical University(NPU)Xi’an 710072China Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing 211800China

Carbonaceous materials are promising anode candidates for potassium-ion batteries(PIBs)given its high conductivity,stable property,and abundant resource,while its practical implementation is still hampered by its limited capacity and inferior rate ***,we report a superior carbonaceous anode through a combined strategy of carbon hybridization and heteroatom *** this composite,hollow carbon spindles(HCS)were anchored on the surface of graphene(G)followed with sulfur doping treatment,aiming to integrate the high conductivity of graphene,the good structure stability of HCS,and the S doping-induced ample active *** a PIB anode,the S-G@HCS composite can display high capacity(301 mAh g^(-1)at 0.1 A g^(-1)after 500 cycles)and long-term cyclability up to 1800 cycles at 2 A g^(-1).Impressively,it can deliver an outstanding rate capacity of 215 mAh g^(-1)at 10 A g^(-1),which is superior to most carbon anodes as-reported so far for *** and theoretical analysis manifests that the construction of graphene/amorphous carbon interface as well as S doping enables the regulation of electronic structure and ion adsorption/transportation properties of carbonaceous material,thus accounting for the high capacity and superior rate capability of S-G@HCS composite.

关键词： carbonaceous anode graphene hollow carbon spindles potassium-ion batteries sulfur doping

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Synthesis of One-Dimensional Phosphonate Metal−Organic Framework with Perylenediimide for Eﬃcient Photocatalytic Water Oxidation

SSRN

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SSRN 2025年

作者： Li, Kang Wang, Zhuoyue Li, Renfu Xu, Xiao Wang, Shoufeng Luo, Huimin Yan, Jinming Guo, Jia Kang, Longtian State Key Laboratory of Structural Chemistry Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fujian Fuzhou350002 China Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China Fujian Fuzhou350108 China University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing100049 China CAS Key Laboratory of Design and Assembly of Functional Nanostructurese China

Compared with carboxylic-based metal–organic frameworks (MOFs), the phosphate MOFs with higher stability have attracted increasing interests, however, their photocatalytic activity has been largely underdeveloped. Herein, one-dimensional phosphate MOFs nanowires (P-PDI-Co) are firstly synthesized with phosphoric perylenediimide (P-PDI) and cobaltous nitrate (Co(NO3)2) for photocatalytic oxygen evolution (POE). The temperature effect on the structure and components of as-prepared P-PDI-Co nanomaterials are carefully investigated, suggesting that the insertion of Co(NO3)2 into P-PDI nanowires at the room temperature and the formation of 1D P-PDI-Co-120 MOF at >120 ℃. The systematical characterizations prove that all of P-PDI-Co samples, especially P-PDI-Co-120 with better thermal stability than carboxylic acid PDI-Co MOF, have more excellent optical, photoelectric and electric properties, and the POE activity than P-PDI nanowires. Under visible light irradiation (λ> 420), the POE rate of 14.0 mmol g⁻¹ h⁻¹ can be achieved without photosensitizer at acidic condition (pH = 3.0), which is the highest value so far with phosphate MOFs as photocatalyst. The further experiments reveal that the faster separation lifetime (4.6 vs. 23.9 ps) and longer recombination lifetime (48.1 vs. 5.5 ps) of photoinduced electrons and holes in P-PDI-Co than P-PDI. This work provides a new idea to synthesize phosphate MOF for photocatalytic study. © 2025, The Authors. All rights reserved.

关键词： Nanowires

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Synthesis,Crystal Structure and Photoluminescence of a TADF Dinuclear Cu(Ⅰ)Complex

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Chinese Journal of Structural Chemistry 2021年第9期40卷 1145-1151,1108页

作者： TANG Sheng YU Rong-Min LU Can-Zhong College of Chemical Engineering Fuzhou UniversityFuzhou 350116China 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 University of Chinese Academy of Sciences Beijing 100049China

A binuclear Cu(Ⅰ)complex[Cu(PCNP)(mepypz)]_(2)(BF_(4))_(2)(1,PCNP=2,6-bis(diphenylphosphine)-benzonitrile,mepypz=2-methyl-6-(1H-pyrazol-3-yl)-pyridine was synthesized from the reaction of Cu(CH_(3)CN)_(4)BF_(4),PCNP and mepypz in CH_(2)Cl_(2)at room *** compound was characterized by NMR,UV-vis and X-ray single-crystal structure *** crystallizes in monoclinic space group P2_(1/c)with a=14.0139(5),b=11.8149(3),c=27.1248(10)A,β=96.686(4)°,V=4460.6(3)A^(3),Z=2,M_(r)=1561.97,D_(c)=1.163 g/cm^(3),F(000)=1600.0,μ=1.774 mm^(–1),GOOF=1.071,the final R=0.0523 and_(w)R=0.1412 for 7919 observed reflections with I>2σ(I).The Cu atoms in the complex are four-coordinated and adopt a distorted tetrahedral coordination *** the solid state,the complex exhibits yellowish-green emission with a peak wavelength of 546 nm,a lifetime of 390μs,and a quantum yield of 0.45 at room *** temperature-dependent investigation of luminescent properties suggests that the complex emits thermally activated delayed fluorescence(TADF)at room temperature.

关键词： Cu(Ⅰ)complex crystal structure photoluminescence DFT calculation

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Mesh-liked Carbon Nanosheets Intercalated into Layered TiO_(2)as a Zero-strain Anode for Lithium-ion Storage

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Chinese Journal of Structural Chemistry 2021年第6期40卷 797-805,686页

作者： FU Wen-Wu ZHANG Ming SHEN Zhong-Rong College of Chemistry Fuzhou UniversityFuzhou 350108China 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 The Laboratory of Rare-earth Functional Materials and Green Energy Xiamen Institute of Rare Earth MaterialsHaixi InstitutesChinese Academy of SciencesXiamen 361021China

Volume change during the insertion/extraction of Li+in electrode materials is an important issue to affect the safety and stability of Li-ion ***,we prepare a near-zero volume change material of COF derived mesh-liked carbon/TiO_(2)(MC/TiO_(2))composite by using a layered TiO_(2)as a template,and a two-dimensional COF material is inserted into the interlayers by the Schiff base polymerization between melamine and terephthalaldehyde,followed by carbonization at 500℃to convert COF to mesh-liked carbon *** to the introduction of mesh-liked carbon nanosheets,the interlayer conductivity of TiO_(2)is improved,and the nanocavities in mesh-liked carbon nanosheets provide additional chambers for the insertion/extraction of Li-ions without any change of the interlayer *** MC/TiO_(2)shows a specific capacity of 472.7 mAh/g at a current density of 0.1 A/g,and good specific capacity retention of 65%remains after 1000 cycles at a current of 1 A/g.

关键词： layered titanium dioxide Schiff base reaction lithium-ion battery zero-strain anode

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High-capacity potassium ion storage mechanisms in a soft carbon revealed by solid-state NMR spectroscopy

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Rare Metals 2022年第11期41卷 3752-3761页

作者： Jing-Heng Han Jia He Qi-Yao Zou Jie Zhang Zhi Yang Zhi-Wei Zhao Hui-Xin Chen Hong-Jun Yue Da-Wei Wang Hai-Chen Lin Hao-Dong Liu Gui-Ming Zhong Zhang-Quan Peng College of Chemistry and Material Science Fujian Normal UniversityFuzhou350000China 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 SciencesFuzhou350002China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare-Earth MaterialsHaixi InstitutesChinese Academy of SciencesXiamen361021China Laboratory of Advanced Spectro-Electrochemistry and Li-Ion Batteries Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China Key Laboratory of Automobile Materials of Ministry of Education&School of Materials Science and Engineering Jilin UniversityChangchun130025China Chemical Engineering University of California San DiegoLa JollaSan DiegoCA92093USA

Carbon materials are crucially important for the realization of potassium-ion ***,the potassium storage mechanisms in various carbon materials are incompletely ***,solid-state ^(13)C nuclear magnetic resonance(NMR) spectroscopy coupled with Raman and X-ray diffraction(XRD) techniques are employed to study the reaction mechanism in a soft carbon *** is revealed that the insertion of potassium ions into the soft carbon firstly induces a transformation of the disordered region to short-range ordered stacking,involving both the pristine local unorganized and organized carbon ***,potassium ions intercalate into the rearranged carbon structure,finally producing the nano-sized KC_(8).Moreover,a remarkable c apacity of 322 mAh·g^(-1) with a low mid potassiation voltage of <0.3 V is present for the prepared soft carbon,which is on account of the underlying potassium storage sites,including the disordered stacking carbon as a main component of the soft *** results suggest that regulating the disordered stacking region in the turbostratic structure of soft carbon is a critical issue for further improving the potassium storage performance.

关键词： Reaction mechanism Soft carbon Solid-state nuclear magnetic resonance(NMR) Anode Potassium-ion batteries(PIBs)

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Tea-derived carbon materials as anode for high-performance sodium ion batteries

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Chinese Chemical Letters 2023年第4期34卷 519-525页

作者： Huayan Wang Huixin Chen Chi Chen Miao Li Yiming Xie Xingcai Zhang Xianwen Wu Qiaobao Zhang Canzhong Lu Engineering Research Center of Environment-Friendly Function Materials Ministry of EducationInstitute of Materials Physical ChemistryHuaqiao UniversityXiamen 361021China 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 Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005China School of Engineering and Applied Sciences Harvard UniversityCambridgeMA 02138United States School of Engineering Massachusetts Institute of TechnologyCambridgeMA 02139United States Xiamen Key Laboratory of Rare Ear School of Chemistry and Chemical Engineering Jishou UniversityJishou 416000China

Sodium-ion batteries(SIB) have attracted widespread attention in large-scale energy storage fields owing to the abundant reserve in the earth and similar properties of sodium to lithium. Biomass-based carbon materials with low-cost, controllable structure, simple processing technology, and environmental friendliness tick almost all the right boxes as one of the promising anode materials for SIB. Herein, we present a simple novel strategy involving tea tomenta biomass-derived carbon anode with enhanced interlayer carbon distance(0.44 nm) and high performance, which is constructed by N,P co-doped hard carbon(Tea-1100-NP) derived from tea tomenta. The prepared Tea-1100-NP composite could deliver a high reversible capacity(326.1 m Ah/g at 28 m A/g), high initial coulombic efficiency(ICE = 90% at 28 m A/g),stable cycle life(262.4 m Ah/g at 280 m A/g for 100 cycles), and superior rate performance(224.5 m Ah/g at 1400 m A/g). Experimental results show that the excellent electrochemical performance of Tea-1100-NP due to the high number of active N,P-containing groups, and disordered amorphous structures provide ample active sites and increase the conductivity, meanwhile, large amounts of microporous shorten the Na+diffusion distance as well as quicken ion transport. This work provides a new type of N,P co-doped high-performance tomenta-derived carbon, which may also greatly promote the commercial application of SIB.

关键词： Tea tomenta Co-doped Hard carbon Initial coulombic efficiency Sodium-ion batteries

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Grain Boundary Effects on the Mobility of Chemical Vapor Deposition Synthesized Monolayer MoS_(2)-FETs

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Chinese Journal of Structural Chemistry 2021年第4期40卷 512-518,408页

作者： JU Qian-Kun HONG Wen-Ting LIU Wei 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 University of Chinese Academy of Sciences Beijing 100049China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China

Molybdenum disulphide (MoS_(2)) has emerged as a promising candidate for low-power digital ***,grain boundaries play a decisive role in determining the carrier mobility and performance of MoS_(2)-*** this work,we report a systematic study on the grain boundary of chemical vapor deposition (CVD)MoS_(2).We found that in the ON-state,if current flows across a grain boundary that is aligned perpendicular to the channel length,the current of CVD MoS_(2)-FETs can be significantly reduced,while in the OFF-state,the effect is ***-insulator-transition is clearly observed,indicating the high quality of our CVD samples,and it is also shown that grain boundaries increase the metal-insulator-transition crossover-voltage in MoS_(2)-***,this work provides useful information and guidance in understanding the nature of carrier transport in synthesized MoS2 devices,and the developed framework can be applied to other 2D semiconductors in general,as well as in optimizing the CVD process and device design with 2D materials.

关键词： grain boundary golybdenum disulfide ghemical vapor deposition field-effect transistor

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Inorganic-organic Hybrid Cathodes for Fast-charging and Long-cycling Zinc-ion Batteries

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Chinese Journal of Structural Chemistry 2021年第11期40卷 1535-1540,1410页

作者： QIU Zi-Wei FU Yu-Ru CHEN Ming ZHAO Jun-Mei SUN Chuan-Fu University of Chinese Academy of Sciences Beijing 100039China 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 Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing 100190China

Here we report the utilization of inorganic-organic hybrid(IOH)as a new type of cathode material for aqueous Zn-ion *** IOH possessing a unique lattice-water-rich layered structure achieves high long-term cycling stability(81.5%capacity retention over 1500 cycles)and ultrafast charging capability(~90%state of charge about 1 minute).

关键词： zinc-ion batteries inorganic-organic hybrid fast-charging cathode

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Construction of Ru Single-Atom and Cluster/Np-Mo Synergistic Active Sites with Hydrogen Spillover for Efficient Hydrogen Evolution Reaction

SSRN

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SSRN 2025年

作者： Jian, Chuanyong Yuan, Jiashuai Wang, Taikun Zeng, Liandun Liu, Wei CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou350002 China College of Chemistry and materials Fujian Normal University Fujian Fuzhou350007 China

The development of single-atom and atomic cluster system catalysts to accelerate hydrogen evolution reaction (HER) kinetics is highly promising but remains challenging, as the relationship between their structure and performance is still unclear, complicating their design and application. Herein, we report ruthenium single-atom (RuSA) and atomic cluster (RuAC) uniformly deposited on nanoporous molybdenum hexahedrons carrier (np-Mo) as an efficient HER catalyst. Experimental and theoretical studies demonstrate that the formed Ru single-atom and cluster/np-Mo (RuSA+AC/np-Mo) synergistic active sites with hydrogen spillover effects exhibit excellent HER performance. The catalyst delivers overpotentials of just 35 mV and 27 mV at 10 mA cm−2 in alkaline and acidic media, respectively, outperforming commercial Pt/C. More importantly, RuSA+AC/np-Mo catalyst can reach high current densities of 1000 mA cm-2 at low overpotentials of 146 mV (1.0 M KOH) and 117 mV (0.5 M H2SO4), respectively, and it displays high stability of 50 h. Density functional theory calculation analysis reveals an ideal dual-site cooperative mechanism promotes fast water dissociation and hydrogen formation and desorption, synergistically accelerating HER kinetics. This work not only gives valuable insight into the potential use of single-atom cluster system catalysts for HER, but also shed light on dual-site cooperative mechanism in designing high-performance catalysts. © 2025, The Authors. All rights reserved.

关键词： Potassium hydroxide

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