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New 'Non-phosphorous'and Efficient Diglycolamide-acid Based Extraction Systems

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结构化学 2020年第12期39卷 2139-2147页

作者： ZHANG Yang ZHAO Zhi-Gang XIE Mei-Ying XUE Li-Yan YU Shu-Wen JIANG Zheng-Ming SHAO Zhi-Heng WANG Kai-Xian YANG Fan 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 350002China Xiamen Institute of Rare Earth Materials Haixi InstituteChinese Academy of SciencesXiamen361021China Fujian Province Joint Innovation Key Laboratory of Fuel and Materials 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 350002China Xiamen Institute of Rare Earth Materials Haixi InstituteChinese Academy of SciencesXiamen361021China Fujian Province Joint Innovation Key Laboratory of Fuel and Materials 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 350002China Xiamen Institute of Rare Earth Materials Haixi InstituteChinese Academy of SciencesXiamen361021China Fujian Province Joint Innovation Key Laboratory of Fuel and Materials 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 350002China Xiamen Institute of Rare Earth Materials Haixi InstituteChinese Academy of SciencesXiamen361021China Fujian Province Joint Innovation Key Laboratory of Fuel and Materials 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 350002China Xiamen Institute of Rare Earth Materials Haixi InstituteChinese Academy of SciencesXiamen361021China Fujian Province Joint Innovation Key Laboratory of Fuel and Materials CAS Key Laboratory of Design and Assembly of Fun

In this paper,we briefly reviewed the new non-phosphorous extraction systems proposed according to the different applicational *** systems were established by choosing the suitably modified chemical group and the corresponding substrate with unique chemical/physical *** guiding principle for the foundation of these new systems was to combine the advantages of the substrate and functions of the modified chemical group,majorly the *** induced physical/chemical properties of the substrate and the functions of modified moieties had the potential to import unique traits to the as-founded adsorbent,establishing a task-tailored bi-/multi-functional *** believe the new systems had the potential to create new adsorption/desorption extraction/bask-extraction paradigms to improve the selectivity and capacity of the extraction/adsorption process,as well as to be more time-efficient and environmentally friendly.

关键词： extraction adsorption/desorption diglycolamide acid modification

Multifunctional, Superelastic, and Environmentally Stable Sodium Alginate/Mxene/Polydimethylsiloxane Aerogels for Piezoresistive Sensor

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SSRN 2023年

作者： Han, Songjiu Wu, Qirui Zhu, Jundong Chen, Anbang Zhang, Jiayu Chen, Yujia Yang, Xiaoxiang Huang, Jianren Guan, Lunhui CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou350108 China School of Mechanical Engineering and Automation Fuzhou University Fuzhou350108 China School of Chemistry Fuzhou University Fuzhou350108 China

Aerogel sensors have drawn considerable interest in the recent research world. However, simultaneously maintaining superelasticity and an outstanding piezoresistive effect under changing environmental conditions remains challenging. Here, sodium alginate (SA) was used as a bonding agent for MXene nanosheets and polydimethylsiloxane (PDMS) as a reinforcing agent to prepare SA/MXene/PDMS (SMP) composite aerogel with excellent high conductivity, mechanical elasticity, reliable thermal insulation, and good hydrophobicity. The interaction between MXene nanosheets and SA enhances the 3D network framework of the aerogel. The aerogel with a layer-support network structure prepared by the modified directional freezing method showed light weight, high sensitivity (37.43 kPa-1), significant reversible compression (70%) and excellent fatigue resistance (60,000 cycles). The piezoresistive sensor based on SMP composite aerogel can quickly respond to pressure/strain signals, which can be further used for pulse beating, sound detection, motion monitoring, foot posture diagnosis and human health monitoring. Additionally, the MXene aerogel sensor based on carbon material with frequency response characteristics can detect low to high frequency vibration signals, has frequency response characteristics that can detect low to high-frequency vibration signals, making it useful for rotating machinery speed detection, cantilever beam vibration detection, non-destructive testing of cantilever beams, and other engineering applications. With its the layered porous structure and the assistance of PDMS, the aerogel also exhibits larger water contact angles (120o) and extreme environmental suitability (-40 to 80 oC), performing a wide range of application potential in many fields. © 2023, The Authors. All rights reserved.

关键词： Polydimethylsiloxane

A Tetranuclear Cuprous Halide Cluster Exhibiting Efficient Blue Thermally Activated Delayed Fluorescence

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Chinese Journal of Structural Chemistry 2021年第11期40卷 1489-1495,1408页

作者： WANG Pei HUANG Chun-Hua CHEN Xu-Lin LU Can-Zhong 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 Xiamen Institute of Rare-earth Materials Haixi InstitutesChinese Academy of SciencesXiamen 361021China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China Huaqiao University Xiamen 361021China University of Chinese Academy of Sciences Beijing 100049China

A new tetranuclear cuprous halide complex,(CuBr)_(4)(PN)_(2)(PN=2-(diphenylphosphaneyl)-6-methoxypyridine),was synthesized and fully *** solid state,this complex exhibits efficient blue emission with a photoluminescence quantum yield of 43.3%and a decay time of 19μs at room *** theoretical calculations,combined with the temperature dependence of spectroscopic properties and emission decay behaviors,indicate that the emission in the solid state originates from the ^(1,3)(MLCT+XLCT)excited states,which are in thermal equilibrium with a small energy gap of about 0.1 eV.

关键词： cuprous complex thermally activated delayed fluorescence blue emission photoluminescence

designing Hard Carbon Microsphere Structure Via Halogenation Amination and Oxidative Polymerization Reactions for Sodium Ion Insertion Mechanism Investigation

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SSRN 2023年

作者： Zhao, Yafang Zheng, Jun Zhao, Yanmei Zhang, Kai Fu, Wenwu Wang, Gang Wang, Haodong Hao, Yaowei Lin, Zhiguang Cao, Xiaocao Liu, Jiayi Zhang, Ming Shen, Zhongrong CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on The Structure of Matter Chinese Academy of Sciences Fuzhou350002 China College of Chemistry and Materials Science Fujian Normal University Fuzhou350007 China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth Materials Haixi Institutes Chinese Academy of Sciences Xiamen361021 China

Hard carbon as a negative electrode material for sodium-ion batteries has great commercial potential and has been widely studied. The sodium-ion intercalation in graphite domains and the filling of closed pores in the low voltage platform region still remain a subject of controversy. Here we constructed two ideal models with adjustable interlayer spacing, porosity, and defects in the microstructure of hard carbon by using p-Phenylenediamine and dichloromethane as carbon precursors. It was found that the capacity of hard carbon materials mainly originates from intercalation into graphite domains. The research revealed that the prepared hard carbon exhibited a reversible sodium storage capacity of 339.33 mAh g−1 at a current density of 25 mA g−1, with an initial coulombic efficiency as high as 80.23%. It even maintained a reversible sodium storage capacity of 125.53 mAh g−1 at a high current density of 12.8 A g−1. Based on the analysis of hard carbon structure and electrochemical performance, we propose an "adsorption-filling-intercalation" mechanism for sodium storage. © 2023, The Authors. All rights reserved.

关键词： Anodes

Boosting single-band red upconversion luminescence in colloidal NaErF_4 nanocrystals:Effects of doping and inert shell

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Journal of Rare Earths 2019年第6期37卷 573-579页

作者： Xiangshui Cui Yao Cheng Hang Lin Qingping Wu Ju Xu Yuansheng Wang 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 Sciences

Single-band red upconversion luminescence(UCL) is vital to in vivo bioimaging as well as "see and treat" biomedicines. Herein, starting with the previously reported β-NaErF4:Tm UCNPs, we examined the effects of both Yb^(3+) doping and inert shell coating on the red-to-green(R/G) ratio for Er3+ based UCL. The doping of Yb^(3+) into the β-NaErF4:Tm3+ core not only enhances the whole UCL intensity, but also raises the R/G ratio by 1.25 times. In addition, the coating of an inert NaYF4 shell, which is usually adopted for the enhancement of UCL intensity, further boosts the R/G value up to as high as 77.92. This work may benefit the potential bioimaging application of single-band red UCL.

关键词： Yb3+ doping Single-band Upconversion luminescence Core-shell nanostructure Rare earths

Constructing Cu2o@Zntpp Ultrathin Nanosheets Heterojunction for Enhanced Photocatalytic Co2 Reduction to Ch4

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SSRN 2024年

作者： Wang, Zhuoyue Min, Shihao Li, Renfu Lin, Wenlie Li, Kang Wang, Shoufeng Kang, Longtian Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research the Structure of Matter Chinese Academy of Sciences Fujian Fuzhou350002 China Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China Fujian Fuzhou350108 China College of Chemistry Fuzhou University Fuzhou350116 China University Chinese Academy of Science Fujian College Fuzhou350002 China

The application of supermolecular naonostructures in the photocatalytic carbon oxide reduction reaction (CO2RR) has attracted increasing attention, however, still face a huge challenge due to low selectivity of multi-electron products and stability. Here, the Cu2O@ZnTPP nanocomposites are successfully constructed with p-type semiconductor zinc tetraphenylporphyrin ultrathin nanosheets (ZnTPP NSs) as a template in the aqueous reaction. Systematic characterizations confirm the formation of type-Ⅱ Cu2O@ZnTPP heterojunction, in which the electron transfer from Cu2O to ZnTPP occurs through the Zn-O-Cu bond under the static contact. Under visible-light irradiation (λ> 420 nm), the optimized Cu2O@ZnTPP composite as CO2RR photocatalyst (120.9 μmol/g/h) exhibits ~ 4 and ~ 10 times higher methane (CH4) evolution rate than individual ZnTPP NSs (28.0 μmol/g/h) and Cu2O (12.8 μmol/g/h), the CH4 selectivity of ~98.7 % and excellent stability. Further experiments reveal that Cu2O/ZnTPP has higher photocatalytic conversion efficiency than Cu2O and ZnTPP NSs, in which the photoinduced electron transfer of ZnTPP molecule →(ZnTPP•ZnTPP)* →ZnTPP‒ →Zn-O-Cu →Cu2O can be identified. Meanwhile, Cu2O@ZnTPP shows the shorter electron-hole separation lifetime (3.3 vs. 9.3 ps) and longer recombination lifetime (23.1 vs. 13.4 ps) than ZnTPP NSs. This work provides a strategy to construct organic nanostructure for photocatalytic CO2RR to multi-electron products. © 2024, The Authors. All rights reserved.

关键词： Methane

Highly Stable Scalable Production of Porous Graphene-Polydopamine Nanocomposites for Drug Molecule Sensing

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SSRN 2024年

作者： Ding, Xiaohong Chen, Ruiqiang Zhang, Cheng Zheng, Longhui Cheng, Huanyu Weng, Zixiang Wu, Lixin Fujian Provincial Key Laboratory of Eco-Industrial Green Technology College of Ecological and Resources Engineering Wuyi University Wuyishan354300 China CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou350002 China Department of Engineering Science and Mechanics Materials Research Institute Pennsylvania State University University ParkPA16802 United States Fujian Key Laboratory of Functional Marine Sensing Materials College of Material and Chemical Engineering Minjiang University Fuzhou350108 China

As atenolol overdosing can lead to severe health complications, the fast detection of atenolol intake in point-of-care settings is highly desirable. The recent advancement of redox analytical methodologies has facilitated the efficacious quantification of these compounds for drug analysis, but their performance is still limited to present challenges in practical applications. This study addresses these challenges by controlling the electropolymerization of polydopamine (PDA) on highly porous laser-induced graphene (LIG) electrodes with enhanced electrochemical redox activity activities for the detection of drug molecules such as atenolol, with minimized interferesnce with the other active substances to induce variation of electrochemical behavior. The enhanced sensitivity of atenolol is attributed to the superhydrophilicity and more active surface sites and -NH2 groups in the PDA polymer through a controlled polymerization process. Moreover, the simulation results further reveal that highly sensitive sensing of atenolol molecules relies on optimal adsorption of atenolol molecule on dopamine or dopaminequinone structural units. The resulting sensors with high repeatability and reproducibility can achieve a low detection limit of 80 µM and a sensitivity of 0.020± 0.04 µA/µM within a linear range from 100 to 800 µM. The materials and surface chemistry in the electrode design based on highly porous LIG provide insights into the integration and application of future scalable and cost-effective electrochemical sensors for use in point-of-care or in-field applications. © 2024, The Authors. All rights reserved.

关键词： Molecules

Hard Carbon Derived from Spent Black Tea as a High-Stability Anode for Potassium-Ion Batteries

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SSRN 2023年

作者： Zou, Jingmin He, Cuihong Bao, Jingze Sun, Chuan-Fu Li, Yafeng College of Chemistry Fuzhou University Fujian Fuzhou350108 China CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterials State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fujian Fuzhou350002 China Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials Fuzhou University Fujian Fuzhou350002 China

Hard carbon is derived from spent black tea (THC) through a two-step carbonization process. THC is an easy preparation, green, and high abundance carbon material for high-stability potassium ion storage. As an anode for potassium-ion batteries, it delivers a high reversible capacity of 203 mA h g-1 at 30 mA g-1 and long-term cycling life with 90% capacity retention over 3.6 months. The excellent cycling stability is attributed to the highly reversible structure revealed by Ex-situ Raman spectra. © 2023, The Authors. All rights reserved.

关键词： Anodes

Tunable Magnetic Phase Transition and Room Temperature Magnetocaloric Effect in La0.67ba0.33mno3 Nanoparticles

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SSRN 2024年

作者： Xi, Shaobo Liu, Zhaomei Niu, Haibo Xi 'an Jiaotong University City College Xi’an710018 China Engineering Research Center of Photovoltaic Technologies and Systems Universities of Shaanxi Province China Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Institute of Research on The Structure of Matter Chinese Academy of Sciences Fuzhou350002 China High Magnetic Field Laboratory Chinese Academy of Sciences Hefei230031 China

.67Ba0.33MnO3 particles with the sizes from 17 to 60 nm have been prepared using the sol-gel method and the magnetic properties are studied systematically. We found a tunable critical behavior during ferrimagnetic-paramagnetic (FM-PM) transition in single domain magnetic nanoparticles. The shifts of FM-PM critical transition temperature (TC) and broaden of singularities occurs due to finite size induced thermal fluctuation in the nanoscale thermodynamic system. The critical temperature decreases from 337K to 296K with the decrease of particle size, coupled with broaden of the singularities during the critical transition. As a result of this evolution in the magnetic phase transitions, room temperature magnetocaloric effects (MCE) of the nanoparticles are achieved and the refrigeration efficiency was enhanced significantly. The maximal magnetic entropy change temperature decreases to room temperature (296K) as the particle size reduced. The full-width at half maximum of magnetic entropy change broadens dramatically as the particle size reduces. Thus large maximal relative cooling power (RCP) of 205 J/kg is obtained around room temperature. The broadening of the critical transition and shift of critical temperature in the nanoparticles made them excellent magnetic refrigeration materials near room temperature. © 2024, The Authors. All rights reserved.

关键词： Manganites