检索结果-南通市图书馆

Chinese Chemical Letters 2024年第4期35卷 176-180页

作者： Chao-Long Chen Rong Chen La-Sheng Long Lan-Sun Zheng xiang-jian kong Collaborative Innovation Center of Chemistry for Energy Materials State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China

Light-driven nitrogen fixation to produce ammonia is a green and economical technology of nitrogen reduction but is still quite challenging, especially in an air atmosphere without any sacrificial ***, we demonstrate efficient photocatalytic nitrogen fixation using water and air directly by loading lanthanide–transition metal(4f–3d) cluster NdCo_(3) on two-dimensional P-doped graphitic carbon nitrides(PCN) material surface. Benefiting from the increase in the number of nitrogen vacancies(NVs) and highly matched band gap structure and excellent hole trapping ability of clusters, the NdCo_(3)/PCN photocatalyst exhibits efficient nitrogen reduction activity with 371(in air) and 825 μmol h^(-1)g^(-1)(in pure nitrogen)without any sacrificial reagents. The introduction of potassium sulfate inhibits hydrogen production and promotes nitrogen reduction activation. This work suggests that anchoring precisely structured clusters on 2D materials may enhance photocatalytic nitrogen reduction under normal temperature and pressure.

关键词： Photocatalytic Nitrogen fixation 4f-3d Cluster Air atmosphere

Enhanced proton conductivity of Mo_(154)-based porous inorganic framework

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2021年第6期64卷 959-963页

作者： Hai-Ying Wang Shu-Rong Li Xing Wang La-Sheng Long xiang-jian kong Lan-Sun Zheng Collaborative Innovation Center of Chemistry for Energy Materials State Key Laboratory of Physical Chemistry of Solid SurfacesDepartment of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China

The construction of inorganic porous frameworks from discrete polyoxometalate(POM)units is a major research ***,a three-dimensional(3D)all-inorganic porous structure{Mo_(154)}_n that consists of classic Mo_(154)rings connected by Mo–O–Mo covalent bonds was ***,the proton conductivity of the 3D-{Mo_(154)}_n framework is 1.1×10^(-2)S cm^(-1)at 22℃and 100%relative humidity(RH),which is one of the highest proton conductivities reported thus far for POM-based conductive *** to the discrete{Mo_(154)}cluster and 1D-{Mo_(154)}_n,the enhanced conductivity of 3D-{Mo_(154)}_n suggests that assembling POM-based all-inorganic porous frameworks is a promising method for designing proton-conductive materials.

关键词： polyoxomolybdate proton conductor three-dimensional structure self-assembly cluster

Synthesis,structures and photoluminescence of uranyl polyoxometalate clusters based on trilacunary[TeW_(9)O_(33)]^(8-)

在线全文

学校读者我要写书评

暂无评论

Tungsten 2023年第2期5卷 254-260页

作者： Hai-Ying Wang Xiu-Ying Zheng La-Sheng Long Lan-Sun Zheng xiang-jian kong State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Henan Key Laboratory of Polyoxometalate Chemistry College of Chemistry and Chemical EngineeringHenan UniversityKaifeng 475004China Institutes of Physical Science and Information Technology Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationAnhui UniversityHefei 230601China

Synthesis of uranyl polyoxometalate clusters attract more attention but remain great ***,two uranyl polyoxometalate inorganic clusters of{Na_(6)(NH_(4))_(19)[(TeW_(9)O_(33))_(4)[TeO_(2)(OH)](UO_(2))4(H_(2)O)_(2)]·50H_(2)O}n(1,Te-U_(4))and(NH_(4))18{Na@[(TeW_(9)O_(32)OH)(TeW_(9)O_(33))_(2)[TeO(OH)][W_(3)O_(12)(μ_(3)-OH)](UO_(2))_(6)(μ_(2)-OH)_(2)H_(2)O]}·75H_(2)O(2,Te-U6)were prepared using trilacunary[α-B-TeW_(9)O_(33)]8-as inorganic *** analysis showed that compound 1 is a one-dimensional chain structure formed by tetrameric aggregates of[(α-B-TeW_(9)O_(33))_(4)(TeO_(2)(OH))(UO_(2))_(4)(H_(2)O)2]25-as nodes and Na+ions as *** anionic tetrameric aggregates in 1 is made of two sandwich-type dimers of[(TeW_(9)O_(33))_(2)(UO_(2))_(2)H_(2)O]12-bridged by a[TeO_(2)(OH)]-*** 2 is a triangular trimeric architecture templated by Na+*** solid-state luminescence emission spectra of compounds 1 and 2 show the characteristic peaks of uranyl *** 1 with one-dimensional chain structure exhibited a higher photoluminescence quantum yields(PLQY)than that of 2,due to the more rigidity of 1 reducing the nonradiative transitions.

关键词： Uranyl Polyoxometalate Cluster Lacunary Luminescence

Lanthanide-oxo clusters for efficient catalytic reduction of carboxamides

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2023年第2期66卷 443-448页

作者： Zhen-Zhang Weng Chao-Long Chen Long-Wu Ye La-Sheng Long Lan-Sun Zheng xiang-jian kong Collaborative Innovation Center of Chemistry for Energy Materials State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China

The reduction of carboxamides into high value-added amines is a very interesting but great challenging *** we demonstrate that polynuclear lanthanide-oxo clusters Ln16(Ln=Eu and Gd)can be used as efficient catalyst to reduce primary and secondary carboxamides to amines with excellent yield of 71%-98%and broad substrates *** methodology can extend to the gram-scale synthesis of phenethylamine drug with 93%*** on the isolation and characterization of catalytic intermediates,a catalytic mechanism involving multipath reaction is *** work provides efficient lanthanide cluster catalysts for the reduction of carboxamides to amines.

关键词： lanthanide clusters amide reduction metal-hydride BH3 catalytic mechanism

Synthesis,Structure and Magnetic Behavior of a Novel Series of Trinuclear Windwheel Complexes

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2023年第24期41卷 3662-3668页

作者： Rong Luo Chen-Ze Xie Ming-Guang Chen Hai-Yan Shi xiang-jian kong Yu-Hua Fan Feng Shao Key Laboratory of Marine Chemistry Theory and Technology Ministry of EducationCollege of Chemistry and Chemical EngineeringOcean University of ChinaQingdaoShandong266100 China Baotou Research Institute of Rare Earths BaotouInner Mongolia014040 China State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamenFujian361005 China

A new family of trinuclear windwheel complexes with molecular formula [M^(II)_(3)(tpa)_(3)(μ-ttc)](ClO_(4))_(3)·n(sol) (ttc = 1,3,5-triazine-2,4,6-trithiol;tpa = tris(2-pyridylmethyl)amine;M = Mn,n = 2,sol = CH_(3)CN,1;M = Co,n = 1,sol = CH_(3)CN,2;M = Ni,n = 0,3) were synthesized and ***-crystal X-ray diffraction revealed that three metal centers in 1—3 are connected by ttc bridge,forming a regular triangular MII3 *** metal center is bonded by chelating S,N atoms from ttc and by N atoms from *** studies showed that 1—3 displayed antiferromagnetic behavior and further gave the easy-axis anisotropy (D = −0.77 cm^(−1) for 1 and −8.13 cm^(−1) for 2) and easy-plane anisotropy (D = 5.08 cm^(−1) for 3).Moreover,2 exhibited field-induced slow magnetic relaxation behavior and their effective energy barriers were roughly evaluated Ueff = 6.9 K.

关键词： Cluster compounds Crystal growth Magnetic properties Slow magnetic relaxation Magnetic anisotropy

Encapsulating a Ni（Ⅱ） molecular catalyst in photoactive metal–organic framework for highly efficient photoreduction of CO2

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science Bulletin 2019年第14期64卷 976-985页

作者： Zhi-Hao Yan Bo Ma Shu-Rong Li Junxue Liu Rong Chen Ming-Hao Du Shengye Jin Gui-Lin Zhuang La-Sheng Long xiang-jian kong Lan-Sun Zheng Collaborative Innovation Center of Chemistry for Energy Materials State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China State Key Laboratory of Molecular Reaction Dynamics and Collaborative Innovation Center of Chemistry for Energy Materials Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China College of Chemical Engineering Zhejiang University of Technology Hangzhou 310032 China

Photocatalytic reduction of CO2 to CO is a promising strategy for reducing atmospheric CO2 levels and storing solar radiation as chemical ***,we demonstrate that a molecular catalyst[NiⅡ(bpet)(H2O)2]successfully encapsulated into a highly robust and visible-light responsive metal–organic framework(Ru-UiO-67)to fabricate composite catalysts for photocatalytic CO2 *** composite Ni@Ru-UiO-67 photocatalysts show efficient visible-light-driven CO2 reduction to CO with a TON of 581 and a selectivity of 99% after 20-h illumination,because of the facile electron transfer from Ru-photosensitizer to Ni(Ⅱ)active sites in Ni@Ru-UiO-67 *** mechanistic insights into photoreduction of CO2 have been studied based on thermodynamical,electrochemical,and spectroscopic investigation,together with density functional theory(DFT)*** work shows that encapsulating molecular catalyst into photoactive MOF highlights opportunities for designing efficient,stable and recyclable photocatalysts.

关键词： Metal-organic frameworks CO2 reduction Transient absorption Photocatalysis DFT calculations

Molecular solid solution of lanthanide-titanium-oxo clusters with enhanced photocatalytic hydrogen evolution

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第2期67卷 529-535页

作者： Rong Chen Chao-Long Chen Hui Zhang Zi-Han Wang Fu-Li Sun Ming-Hao Du Gui-Lin Zhuang Cheng Wang La-Sheng Long Lan-Sun Zheng xiang-jian kong Collaborative Innovation Centre of Chemistry for Energy Materials State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry College of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China College of Chemical Engineering Zhejiang University of TechnologyHangzhou310032China

Molecular solid solutions of metal clusters containing different metal centers with well-defined structures can accurately regulate the HOMO-LUMO gap,but are rarely ***,a series of colorless lanthanide-titanium-oxo clusters Ln_(2)Ti_4(μ_(2)-O)_(2)(μ_(3)-O)_4(Piv)_(10)(THF)_(2)(Ln_(2)Ti_4,Ln = Eu,Gd,Tb,and Ce,HPiv = pivalic acid) were synthesized by the reaction of pivalic acid with Ln(Ac)_(3) and titanium *** light yellow crystal of cluster solid solutions Eu_(2)Ti_(4-x)Cd_(x),containing a mixture of Eu_(2)Ti_4 and Eu_(2)Ti_(3)Cd,was obtained by in situ doping Cd^(2+) and S^(2–).Eu_(2)Ti_(3.92)Cd_(0.08) displays efficient photocatalytic hydrogen evolution activity without a co-catalyst,which is up to 2.6 times that of Eu_(2)Ti_*** time-resolved transient absorption spectroscopy and spin-polarized density functional calculations showed that the enhanced photocatalytic performance of Eu_(2)Ti_(4-x)Cd_(x) can be attributed to the narrower HOMO-LUMO gap and lower LUMO position than that of Eu_(2)Ti_*** studyprovides an in situ doping method to realize the simple preparation of cluster solid solution.

关键词： molecular solid solution lanthanide-titanium-oxo clusters photocatalytic hydrogen evolution

同方期刊数据库

Integration of bio-inspired lanthanide-transition metal cluster and P-doped carbon nitride for efficient photocatalytic overall water splitting

在线全文

学校读者我要写书评

暂无评论

National Science Review 2021年第9期8卷 41-49页

作者： Rong Chen Gui-Lin Zhuang Zhi-Ye Wang Yi-Jing Gao Zhe Li Cheng Wang Yang Zhou Ming-Hao Du Suyuan Zeng La-Sheng Long xiang-jian kong Lan-Sun Zheng Collaborative Innovation Center of Chemistry for Energy Materials State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University College of Chemical Engineering Zhejiang University of Technology College of Chemistry and Chemical Engineering Liaocheng University

Photosynthesis in nature uses the Mn4CaO5cluster as the oxygen-evolving center to catalyze the water oxidation efficiently in photosystem II. Herein, we demonstrate bio-inspired heterometallic Ln Co3(Ln=Nd, Eu and Ce) clusters, which can be viewed as synthetic analogs of the Ca *** Ln Co3on phosphorus-doped graphitic carbon nitrides (PCN) shows efficient overall water splitting without any sacrificial reagents. The Nd Co3/PCN-c photocatalyst exhibits excellent water splitting activity and a quantum efficiency of 2.0%at 350 nm. Ultrafast transient absorption spectroscopy revealed the transfer of a photoexcited electron and hole into the PCN and Ln Co3for hydrogen and oxygen evolution reactions, respectively. A density functional theory (DFT) calculation showed the cooperative water activation on lanthanide and O-O bond formation on transition metal for water oxidation. This work not only prepares a synthetic model of a bio-inspired oxygen-evolving center but also provides an effective strategy to realize light-driven overall water splitting.

关键词： bio-inspired lanthanide-transition metal cluster photocatalytic overall water splitting synergistic effects oxygen-evolving center

2020 roadmap on pore materials for energy and environmental applications

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2019年第12期30卷 2110-2122页

作者： Zengxi Wei Bing Ding Hui Dou Jorge Gascon xiang-jian kong Yujie Xiong Bin Cai Ruiyang Zhang Ying Zhou Mingce Long Jie Miao Yuhai Dou Ding Yuan jianmin Ma School of Physics and Electronics Hunan UniversityChangsha 410082China jiangsu Key Laboratory of Electrochemical Energy-Storage Technologies College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 210016China King Abdullah University of Science and Technology KAUST Catalysis Center(KCC)Advanced Catalytic MaterialsThuwal 23955Saudi Arabia State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Hefei National Laboratory for Physical Sciences at the Microscale and School of Chemistry and Materials ScienceUniversity of Science and Technology of ChinaHefei 230026China Physical Science Division Pacific Northwest National LaboratoryRichlandWA 99352United States State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500China The Center of New Energy Materials and Technology School of Materials Science and EngineeringSouthwest Petroleum UniversityChengdu 610500China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Centre for Clean Environment and Energy Gold Coast CampusGriffith UniversityGold Coast 4222Australia Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationZhengzhou UniversityZhengzhou 450002China

Porous materials have attracted great attention in energy and environment applications,such as metal organic frameworks(MOFs),metal aerogels,carbon aerogels,porous metal *** materials could be also hybridized with other materials into functional composites with superior *** high specific area of porous materials offer them the advantage as hosts to conduct catalytic and electrochemical *** one hand,catalytic reactions include photocatalytic,p ho toe lectrocatalytic and electrocatalytic reactions over some *** the other hand,they can be used as electrodes in various batteries,such as alkaline metal ion batteries and electrochemical *** far,both catalysis and batteries are extremely attractive *** are also many obstacles to overcome in the exploration of these porous *** research related to porous materials for energy and environment applications is at extremely active stage,and this has motivated us to contribute with a roadmap on ’porous materials for energy and environment applications’.

关键词： Metal organic frameworks Zeolitic imidazolate frameworks Covalent organic frameworks Aerogels Photocatalysis Photoelectrocatalysis Electrocatalysis Metal-ion batteries Electrochemical capacitors

A Lanthanide-titanium OXO Cluster Eu4Ti4 With Polyhedron Structure

在线全文

学校读者我要写书评

暂无评论

A Lanthanide-titanium OXO Cluster Eu4Ti4 With Polyhedron Str...