Three-dimensional (3D) flowerlike CuO structures were prepared successfully by reducing copper chloride (CuCl2 2H2O) aqueous solution in the presence of cetyltrimethylammonium bromide (CTAB). The as-prepared CuO struc...
详细信息
Antimony-doped tin oxide films were prepared by sol-gel technique from an ethanolic solution of SnCl4.5H2O and SbCl3. The effect of the addition of acetylacetone as a hydrolysis modifier was investigated. Structural, ...
详细信息
ISBN:
(纸本)9781632660008
Antimony-doped tin oxide films were prepared by sol-gel technique from an ethanolic solution of SnCl4.5H2O and SbCl3. The effect of the addition of acetylacetone as a hydrolysis modifier was investigated. Structural, optical and electrical properties of the films were studied by XRD, FESEM, TEM, FTIR, UV-vis, TG and Hall effect measurements. TEM results showed that antimony-doped tin oxide films consist of well-crystallized grains ranging from 5 to 10 nm. It was found that the addition of the acetylacetone influences positively the film properties. The appropriate addition of acetylacetone allowed for the preparation of films with an optical transmittance as high as 97% in the visible region and 47% at 200 nm. Highly transparent films prepared in this study exhibit an electrical resistivity of 10-3 Ω cm which make them attractive for photovoltaic cell applications.
For chiral gels and related applications, one of the critical issues is how to modulate the stereoselective interaction between the gel and the chiral guest precisely, as well as how to translate this information into...
详细信息
For chiral gels and related applications, one of the critical issues is how to modulate the stereoselective interaction between the gel and the chiral guest precisely, as well as how to translate this information into the macroscopic properties of materials. Herein, we report that this process can also be modulated by nonchiral solvents, which can induce a chiral‐interaction reversion for organogel formation. This process could be observed through the clear difference in gelation speed and the morphology of the resulting self‐assembly. This chiral effect was successfully applied in the selective separation of quinine enantiomers and imparts “smart” merits to the gel materials.
The connections between the thermoelectric modules are crucial importance for the performance of the thermoelectric power system. Many studies have been done to improve the output of thermoelectric system, but very li...
详细信息
In order to utilize the exhaust heat of internal combustion engine effectively and enhanceits fuel economy, a test bench used in Automobile Exhaust Thermoelectric Generator (AETEG) isdesigned in this paper, the main c...
详细信息
The tetragonal yttria-stabilized zirconia polycrystal coupling Mg Al2O4(3YTZP-30vol.%Mg Al2O4)exhibited the best high-strain-rate superplasticity in the binary systems,but few investigation had aimed
The tetragonal yttria-stabilized zirconia polycrystal coupling Mg Al2O4(3YTZP-30vol.%Mg Al2O4)exhibited the best high-strain-rate superplasticity in the binary systems,but few investigation had aimed
The research on aggregation-induced emission (AIE) has drawn increasing interests in the past decade. With the efforts scientists paid, a variety of AIE systems have been developed, among which the tetraphenylethelene...
详细信息
The research on aggregation-induced emission (AIE) has drawn increasing interests in the past decade. With the efforts scientists paid, a variety of AIE systems have been developed, among which the tetraphenylethelene and silole derivatives are the most studied. Development of new AIE systems could further enrich the AIE molecules and promote the development of AIE area. In this communication, we prepared a new AIE system based on 1,2,4,6-tetraphenylpyridinium ions according to the restriction of intramolecular rotation mechanism. These molecules could be facilely synthesized via one-step and one-pot reaction. The ionic AIE-active molecules could find wide application in sensing and optoelectronic areas.
Mesoporous vOx@carbon composites were synthesized via ultrasound-assistant impregnation method with mesoporous carbon C-FDU15 as the host. the composites with 32.26 wt% V2O5 loading yield the best capacitance (128 F/g...
详细信息
Ca(Zn1/3Nb2/3)O3/CaTiO3 multilayer heterogeneous thin films have been prepared by sol-gel method. The films are confirmed to be perovskite phase with dense, uniform surface, which possess higher dielectric constant, e...
详细信息
To investigate the quantitative relationship between the electromagnetic-shielding property of composites and the distribution of inclusions, a scheme for predicting the shielding effectiveness of composites containin...
详细信息
To investigate the quantitative relationship between the electromagnetic-shielding property of composites and the distribution of inclusions, a scheme for predicting the shielding effectiveness of composites containing variously-distributed flaky inclusions is proposed. The scheme is based on equivalent parameters of homogeneous comparison materials and the plane-wave shielding theory. It leads to expli- cit formulas for the shielding effectiveness of multi-layered composites in terms of microstructural parameters that characterize the shape, distribution and orientation of the inclusions. For single layer composite that contains random and aligned flaky silver-coated carbonyl-iron particles with fractions of different volume, the predicted shielding effectiveness agrees well with the experimental data. As for composites containing aligned flaky particles,the shielding effectiveness obtained by the proposed scheme and experiment data is higher than that the random case, e.g. about 20 dB higher at 750 MHz. The proposed scheme is a straightforward method for optimizing future composite de- signs.
暂无评论