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A rare porous zinc phosphonocarboxylate framework with high thermal stability and interesting structural transformation

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Chinese Chemical Letters 2018年第6期29卷 959-962页

作者： Yan-Jie Qi Jin-Hua Liu Wen-Xu zheng Xin-Xiong Li shou-tian zheng State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University

A rare porous zinc-organic framework with ultrahigh thermal stability over 500℃ was obtained, which exhibits a CaF2-type topology formed by 8-connected tetranuclear Zn4 clusters and 4-connected phosphonocarboxylate ligands. Interestingly, the similar reactions to the 2 zinc-organic framework but in the absence of H2 O or by the replacement of Zn2＋with Co2＋can yield three different 3 D cluster-based frameworks but with the same CaF2-type topology.

关键词： Phosphonocarboxylate ligand Metal-organic framework Stability Structural transformation Gas adsorption

Recent advances in polyoxoniobate-catalyzed reactions

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Tungsten 2022年第2期4卷 81-98页

作者： zheng-Yi Liu Yu-Diao Lin Hao-Yu Hui-Na Chen zheng-Wei Guo Xin-Xiong Li shou-tian zheng State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou350108China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of ScienceFuzhou350002China

The search for polyoxometalate-based catalysts has long attracted *** designable in structure,stable and effective,polyoxoniobate-based catalysts have an exciting prospect for industrial *** paper not only summarizes recent advances in classic polyoxoniobate-catalyzed reactions,including chemical warfare agents and organic dyes degradation,epoxidation reactions,photocatalytic hydrogen evolution and base-catalyzed reactions but also discusses some representative cases and the speculative mechanism related to *** addition,the current challenges and perspectives in the fabrication of more efficient and promising polyoxoniobate-based catalysts are also presented.

关键词： Polyoxoniobate Catalysis Degaradation of chemical warfare agents Epoxidation reaction Photocatalytic hydrogen evolution Base-catalyzed reaction

Multicomponent Cooperative Assembly of Nanoscale Boron-Rich Polyoxotungstates with 22 and 30 Boron Atoms

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CCS Chemistry 2022年第4期4卷 1305-1314页

作者： Yi Chen zheng-Wei Guo Xin-Xiong Li shou-tian zheng Guo-Yu Yang State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhouFujian 350108 MOE Key Lab of Cluster Science School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 102488

This work demonstrates that the introduction of positive lanthanide(Ln)and transition metal(TM)cations into polyoxotungstates(POTs)to stabilize negative oxoboron clusters is a feasible and general synthetic strategy for creating not only rare boron-rich POTs but also intriguing multicomponent composite polyoxometalates(POMs).By this strategy,a large family of unprecedented boron-rich POTs with 22 and 30 boron atoms,such as[(B_(18)Si_(3)Ln_(6)O_(36)(OH)_(14)){B_(4)Ni_(4)O_(10)(OH)_(4)(A-α-SiW_(9)O_(34))}_(3)]^(44−)(1Ln),[(B_(19)Si_(2)Ln_(7)O_(35)(OH)_(15)(H_(2)O)){B_(4)Ni_(4)O_(10)(OH)_(4)(A-α-SiW_(9)O_(34))}_(2){B_(3)Ni_(4)O_(9)(OH)_(3)(A-α-SiW_(9)-O_(34))}]^(41−)(2Ln),where Ln is Gd,Tb,and Dy,and[(B_(22)O_(42)){LnNi_(3)(OH)_(3)(B-α-SiW_(9)O_(34))}_(4)]^(34−)(3Ln;Ln is Sm,Gd,and Tb),have been *** POTs incorporate the largest number of boron atoms and the highest-nuclearity oxoboron clusters of any molecular POTs reported to *** results show the fusion of two distinct research areas of POT chemistry and oxoboron cluster *** addition,they also show a family of unique POMs made from multiple oxo clusters including W-O,B-O,TM-O,and *** indicate these novel composite materials can exhibit effective catalytic activity for oxidizing toxic 2-chloroethyl ethyl sulfide.

关键词： polyoxotungstates multicomponent boron lanthanide transition metal

A series of high-nuclear planar equilateral triangle-shaped {Ln_(6)(μ_(3)-OH)_(6)} cluster encapsulated polyoxoniobates with frequency dependent magnetic property

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Chinese Chemical Letters 2023年第7期34卷 360-363页

作者： Zeng-Kui Zhu Ya-Yun Lin Rong-Da Lai Xin-Xiong Li Yan-Qiong Sun shou-tian zheng State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou 350108China

The integration of lanthanide(Ln)ions and polyoxoniobates(PONbs)is challenging,and the know Ln-substituted PONbs are still *** work introduces high-nuclear iso-Ln-oxo clusters into th PONb *** first series of high-nuclear Ln-oxo clusters encapsulated heterometallic polyoxonio bates H_9[Na(H_(2)O)_(4)][Cu(en)_(2)]_(10){Ln_6(μ_(3)-OH)_6(Si Nb_(18)O_(54))_(3)}·18H_(2)O(1-Ln,en=ethylenediamine,Ln=Dy,Gd Tb,Ho,Er,Tm,Yb,Lu)based on flower-like{Ln_(6)(μ_(3)-OH)_(6)(Si Nb_(18)O_(54))_(3)}({Ln_6Si_(3)Nb_(54)})clusters hav been successfully synthesized via one-pot hydrothermal synthesis *** flower-like polyoxoanio{Ln_6Si_(3)Nb_(54)}is consisted of three heteropolyoxoniobate{Si Nb_(18)O_(54)}clusters and one unique planar equ lateral triangle-shaped{Ln_6(μ_(3)-OH)_6}cluster,which presents the highest nuclear iso-Ln-oxo cluster i PONb ***{Ln_6(μ_(3)-OH)_6}cluster,each pair ofμ_(3)-OH groups link three Dy^(3+)ions to form a sma approximate equilateral triangle-shaped{Dy_(3)(OH)_(2)}***,the three{Dy_(3)(OH)_(2)}cluster comprise a bigger approximate equilateral triangle-shaped{Dy_6(μ_(3)-OH)_6}*** reported hexanu clear{Ln_6}cluster skeletons are mostly octahedral,however,such equilateral triangle-shaped skeleton o the hexanuclear Ln-oxo cluster is first *** 1-Dy exhibits good water vapor adsorption capacit and ferromagnetic properties.

关键词： Heteropolyoxoniobate Hexanuclear iso-Ln-oxo cluster Copper complexes Water vapor adsorption Ferromagnetism

Giant Ln_(30)-Cluster-Embedded Polyoxotungstate Nanoclusters with Exceptional Proton-Conducting and Luminescent Properties

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CCS Chemistry 2022年第9期4卷 2938-2945页

作者： Zhong Li Zhi-Hao Lv Hao Yu Yan-Qiong Sun Xin-Xiong Li shou-tian zheng State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhouFujian 350108

Although the synthesis of giant lanthanide(Ln)-containing polyoxotungstates(POTs)has long been actively pursued,it remains challenging to encapsulate high-nuclearity Ln–O clusters in POT shells because of the highly complicated assembly *** work demonstrates a simple synthetic strategy of using lacunary POT precursors to assemble with in situ generated Ln–O clusters in the presence of basic N-containing ligands,which exert a slow-releasing effect for Ln^(3+)ions in alkaline conditions.

关键词： polyoxotungstate lanthanide highnuclearity proton conductivity luminescence

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多钽氧酸簇聚物化学的研究进展

科学通报 2018年第32期63卷 3277-3285页

作者：虞豪郑寿添福州大学化学学院福州350116

本文总结了多钽氧酸簇聚物的种类及其合成策略,介绍了同多钽氧酸簇聚物、钽基多金属氧酸簇聚物、杂多钽氧酸簇聚物以及有机无机杂化多钽氧酸簇聚物的研究进展.分析了构建多钽氧酸簇聚物所面临的困难,阐述了通过异金属原子的引入可以调... 详细信息

本文总结了多钽氧酸簇聚物的种类及其合成策略,介绍了同多钽氧酸簇聚物、钽基多金属氧酸簇聚物、杂多钽氧酸簇聚物以及有机无机杂化多钽氧酸簇聚物的研究进展.分析了构建多钽氧酸簇聚物所面临的困难,阐述了通过异金属原子的引入可以调控钽原子聚集成簇及对其改性,实现新颖多钽氧酸簇聚物的制备.在对多钽氧酸簇聚物现有的发展进行归纳讨论的同时,也对其后续的发展进行了展望.

关键词：多金属氧酸盐钽氧簇结构策略合成光催化产氢

Bifunctional-Tripodal-Alcohol-Ligand-Induced Assemblies and Properties of Cluster-based Functional Materials

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Bifunctional-Tripodal-Alcohol-Ligand-Induced Assemblies and ...

A Verifiable Trust-Based CP-ABE Access Control Scheme for Cloud-Assisted Renewable Energy Systems

中国化学会第十届全国无机化学学术会议

作者： Xin-Xiong Li Rui-Hui Wang Guo-Yu Yang shou-tian zheng State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou University State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences MOE Key Laboratory of Cluster Science School of ChemistryBeijing Institute of Technology

By using a bifunctional tripodal alcohol ligand as a structural directing agent, a series of cluster-based materials, including cluster-organic frameworks, heterometallic cluster-organic frameworks, and cluster-based supramolecular frameworks, have been successfully designed and obtained. The relationship between their structures and properties has also been systematically studied.

关键词： Cluster organic framework Designed synthesis Polyoxometalate Tripodal alcohol ligand

来源： cnki会议评论

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Computers, Materials & Continua 2025年第1期82卷 1211-1232页

作者： Jiyu Zhang Kehe Wu Ruomeng Yan zheng tian Yizhen Sun Yuxi Wu Yaogong Guo Department of Control and Computer Engineering North China Electric Power UniversityBeijing102206China State Grid Information&Communication Company of Hunan Electric Power Corporation Changsha410118China State Grid Hunan Electric Power Corporation Chenzhou Power Supply Branch Chenzhou423000China

Renewable Energy Systems(RES)provide a sustainable solution to climate warming and environmental pollution by enhancing stability and reliability through status acquisition and analysis on cloud platforms and intelligent processing on edge servers(ES).However,securely distributing encrypted data stored in the cloud to terminals that meet decryption requirements has become a prominent research ***,managing attributes,including addition,deletion,and modification,is a crucial issue in the access control scheme for *** address these security concerns,a trust-based ciphertext-policy attribute-based encryption(CP-ABE)device access control scheme is proposed for RES(TB-CP-ABE).This scheme effectivelymanages the distribution and control of encrypted data on the cloud through robust attribute key *** introducing trust management mechanisms and outsourced decryption technology,the ES system can effectively assess and manage the trust worthiness of terminal devices,ensuring that only trusted devices can participate in data exchange and access sensitive ***,the ES system dynamically evaluates trust scores to set decryption trust thresholds,thereby regulating device data access permissions and enhancing the system’s *** validate the security of the proposed TB-CP-ABE against chosen plaintext attacks,a comprehensive formal security analysis is conducted using the widely accepted random oraclemodel under the decisional q-Bilinear Diffie-Hellman Exponent(q-BDHE)***,comparative analysis with other schemes demonstrates that the TB-CP-ABE scheme cuts energy/communication costs by 43%,and scaleswell with rising terminals,maintaining average latency below 50ms,ensuring real-time service *** proposed scheme not only provides newinsights for the secure management of RES but also lays a foundation for future secure energy solutions.

关键词： Access control renewable energy systems(RES) ciphertext-policy attribute-based encryption(CP-ABE) security

A Novel Self-Supervised Learning Network for Binocular Disparity Estimation

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 209-229页

作者： Jiawei tian Yu Zhou Xiaobing Chen Salman A.AlQahtani Hongrong Chen Bo Yang Siyu Lu Wenfeng zheng Department of Computer Science and Engineering Major in Bio Artificial IntelligenceHanyang UniversityAnsan-si15577Republic of Korea School of Electrical and Computer Engineering Louisiana State UniversityBaton RougeLA 70803USA Department of Computer Engineering College of Computer and Information SciencesKing Saud UniversityRiyadh11574Saudi Arabia School of Automation University of Electronic Science and Technology of ChinaChengdu610054China

Two-dimensional endoscopic images are susceptible to interferences such as specular reflections and monotonous texture illumination,hindering accurate three-dimensional lesion reconstruction by surgical *** study proposes a novel end-to-end disparity estimation model to address these *** approach combines a Pseudo-Siamese neural network architecture with pyramid dilated convolutions,integrating multi-scale image information to enhance robustness against lighting *** study introduces a Pseudo-Siamese structure-based disparity regression model that simplifies left-right image comparison,improving accuracy and *** model was evaluated using a dataset of stereo endoscopic videos captured by the Da Vinci surgical robot,comprising simulated silicone heart sequences and real heart video *** results demonstrate significant improvement in the network’s resistance to lighting interference without substantially increasing ***,the model exhibited faster convergence during training,contributing to overall performance *** study advances endoscopic image processing accuracy and has potential implications for surgical robot applications in complex environments.

关键词： Parallax estimation parallax regression model self-supervised learning Pseudo-Siamese neural network pyramid dilated convolution binocular disparity estimation