Cu（Ⅱ） detection is important because it plays crucial role in several biological processes and ecological *** techniques have attracted more and more attention in Cu（Ⅱ） *** this report,we contribute a novel stra...
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Cu（Ⅱ） detection is important because it plays crucial role in several biological processes and ecological *** techniques have attracted more and more attention in Cu（Ⅱ） *** this report,we contribute a novel strategy to use fluorescence spectroscopy for Cu（Ⅱ） specific *** specificity relies on the fact that,of the many metal cations,only Cu（Ⅱ） can catalyze the hydrolyzation of a-amino acid *** novelty originates from the unique aggregation-induced emission（AIE） property of the fluorescent *** designed a model a-amino acid ester（TPE-Ala） constructed with alanine and tetraphenylethene-functionalized methanol（TPE-methanol）.In comparison with the precursor TPE-Ala, TPE-methanol has lower solubility and is easy to form aggregates in water,thereby displaying a higher fluorescent ***,the Cu（Ⅱ） catalyzed hydrolyzation can be monitored by recording the fluorescence enhancement and fluorescent detection Cu（Ⅱ） is rationally achieved.
Core–shell Li 4 Ti 5 O 12 @CeO 2 nanosphere has been synthesized by a one-pot co-precipitation method. The structure and morphology of the as-prepared materials have been analyzed by X-ray diffraction and transmissio...
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Core–shell Li 4 Ti 5 O 12 @CeO 2 nanosphere has been synthesized by a one-pot co-precipitation method. The structure and morphology of the as-prepared materials have been analyzed by X-ray diffraction and transmission electron microscopy. The results show that CeO 2 is successfully coated on the surface of the Li 4 Ti 5 O 12 besides partial doping of Ce 4+ into the Li 4 Ti 5 O 12 structure. The Li 4 Ti 5 O 12 @CeO 2 nanosphere exhibits excellent capacity of 152 mAh g −1 even after 180 cycles at 10 C, with no noticeable capacity fading. Furthermore, the sample shows much improved rate capability at 40 C compared with pure Li 4 Ti 5 O 12 when used as anode material for lithium-ion batteries. The introduction of CeO 2 enhances not only the electric conductivity of Li 4 Ti 5 O 12 , but also the lithium ion diffusivity in Li 4 Ti 5 O 12 , resulting in significantly improved electrochemical performance of the Li 4 Ti 5 O 12 .
This paper investigates a composite cathode La0.2Sr0.8TiO3+δ-Ce0.8Sm0.2O2-δ(LSTO-SDC) for the direct steam electrolysis in an oxide-ion-conducting solid oxide electrolyzerThe dependences of electrical conductivity o...
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ISBN:
(纸本)9783038351023
This paper investigates a composite cathode La0.2Sr0.8TiO3+δ-Ce0.8Sm0.2O2-δ(LSTO-SDC) for the direct steam electrolysis in an oxide-ion-conducting solid oxide electrolyzerThe dependences of electrical conductivity of the reduced LSTO on temperature and oxygen partial pressure are studied and further correlated to the electrochemical properties of the cathode in symmetric cell LSTO-SDC/YSZ/LSTO-SDC and solid oxide electrolyzer LSTO-SDC/YSZ/LSM-SDC, respectivelyCurrent efficiencies of the solid oxide electrolyzer with LSTO-SDC cathode were found to be 92.38% and 91.17% with or without reducing gas flowing over them under the applied voltage of 1.8 V at 800 oC, respectively.
The rational design of high‐performance fluorescent materials for cancer targeting in vivo is still challenging. A unique molecular design strategy is presented that involves tailoring aggregation‐induced emission (...
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The rational design of high‐performance fluorescent materials for cancer targeting in vivo is still challenging. A unique molecular design strategy is presented that involves tailoring aggregation‐induced emission (AIE)‐active organic molecules to realize preferable far‐red and NIR fluorescence, well‐controlled morphology (from rod‐like to spherical), and also tumor‐targeted bioimaging. The shape‐tailored organic quinoline–malononitrile (QM) nanoprobes are biocompatible and highly desirable for cell‐tracking applications. Impressively, the spherical shape of QM‐5 nanoaggregates exhibits excellent tumor‐targeted bioimaging performance after intravenously injection into mice, but not the rod‐like aggregates of QM‐2.
Lithium-ion capacitors(LICs) were fabricated using mesocarbon microbeads(MCMB) as a negative electrode and a mixture of activated carbon(AC) and LiFePO4 as a positive electrode(abbreviated as LAC).The phase structure ...
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Lithium-ion capacitors(LICs) were fabricated using mesocarbon microbeads(MCMB) as a negative electrode and a mixture of activated carbon(AC) and LiFePO4 as a positive electrode(abbreviated as LAC).The phase structure and morphology of LAC samples were characterized by X-ray diffraction(XRD) and field emission scanning electron microscopy(FESEM).The electrochemical performance of the LICs was studied using cyclic voltammetry,charge-discharge rate measurements,and cycle performance testing.A LIC with 30 wt% LiFePO4 was found to have the best electrochemical performance with a specific energy density of 69.02 W h kg-1 remaining at 4 C rate after 100 *** with an AC-only positive electrode system,the ratio of practical capacity to theoretical calculated capacity of the LICs was enhanced from 42.22% to 56.59%.It was proved that adding LiFePO4 to AC electrodes not only increased the capacity of the positive electrode,but also improved the electrochemical performances of the whole LICs via Li+ pre-doping.
The research on using thiol-ene click reaction to synthesize sulfur-containing polymers with topological structures and advancedfunctional properties is a hot topic. However, the application of the thiol-yne reaction...
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The research on using thiol-ene click reaction to synthesize sulfur-containing polymers with topological structures and advancedfunctional properties is a hot topic. However, the application of the thiol-yne reaction in the functional polymer preparation is limited and the thiol-yne click polymerization is to be further developed. In this review, we summarized recent research efforts on using thiol-yne click polymerization to synthesize polymers with topological structures. The sulfur-containing polymers were facilely prepared by photo-and thermo-initiated, amine-mediated, and transition-metal-catalyzed thiol-yne click polymerizations. These polymers are promising to be used as drug-delivery vehicles, high refractive index optical materials, photovoltaic materials, and biomaterials etc.
According to the movement law of yarn carriers in the four-step braiding technique and the fixed grid method, a script file that calculates the space shape and location data of 3D braided rectangle preform is develope...
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