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A Transparent and Tough β-Si3N4 Ceramic with a Whiskery Microstructure Pengxi Li1,a, Hongqiang Wang1,b ,Liucheng Gui1,c, Jun Li2,d, Hailong Zhang2,e and Guojian Jiang3,f 1State Key Laboratory Cultivation Base for the Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China, School of Chemistry & Pharmaceutical of Guangxi Normal University, Guilin, Guangxi, 541004,China 2Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050,China 3Shanghai Institute of Technology, Shanghai, 200050, China a605920237@qq.com, bwhq74@mailbox.gxnu.edu.cn(corresponding author) Keywords: Fracture toughness; Hot-pressing; Silicon Nitrides; Optical material Abstract: The transparent β-Si3N4 ceramic with a whisker-like microstructure was prepared by hot- pressing at 2000oC for 26 h, with MgSiN2 as an additive.
Since then, the researches mainly focused on a-SiAlON, because a-SiAlON, in comparison with β-SiAlON, possesses higher optical translucency due to their ability to incorporate stabilized cations into its structure, together with the substitution of aluminum and oxygen for part of silicon and nitrogen, which can further reduce the amounts of residual glassy phase [9-14].
With the further increase of the wavelength after 4.5 μm, the transmittance rapidly decreases to zero at 5 μm, which is analogous to translucent SiAlON ceramics owing to the similar crystal structure [7-14].
Ritchie, “Interface Structure and Atomic Bonding Characteristics in Silicon Nitride Ceramics,” Science, 306 [5702] 1768-70 (2004)
Kleinlein, “Mechanical Properties of Hot-Pressed Silicon Nitride with Different Grain Structures,” J.

The chemical structure of organic inhibitors, as well as their physical and chemical properties such as electron density, functional groups, and electronic structure, are related to their efficacy [7].
Fig. 1 shows the structure of the ammonium benzoate formula.
Structure of ammonium benzoate Table 1.
Mathematical models generated for the prediction of corrosion inhibition using different theoretical chemistry simulations.
Recent Progress of Polymeric Corrosion Inhibitor: Structure and Application.

The structure of RO5 is shown in Fig. 1.
Fig.1 Chemical Structures of the Reactive Orange 5 investigated in this study Molecular Modeling.
All structures underwent complete geometrical optimization on the B3LYP level 6-31+g (d, p), staring from PM6 structures.
The increased partial deprotonations in the presence of amine bases could be rationalized using acid-base chemistry.
Therefore, the presence of amine bases promoted the partial ionization of hydroxyl group in methanol through acid-base chemistry.

Electron diffraction (ED) patterns were used to study the structure of the nanoscaled photocatalysts.
%Fe photocatalyst, implying the existence of small amount of TiO2 with rutile phase structure (JCPDS 89-4920).
Colon, Journal of Photochemistry and Photobiology A: Chemistry. 179 (2006) 20–27
Fu, Journal of Solid State Chemistry. 177 (2004) 3375–3382
Wu, Materials Chemistry and Physics. 100 (2006) 102–107

On the other hand, rare earth (RE) ions are considered as one of the ideal dopants to modify the crystal structure, electronic structure and optical properties of TiO2 [10].
In this paper, C and Y ion co-doping TiO2 samples were synthesized by sol-gel process, the effects of different preparation conditions on the structure and photocatalytic property of TiO2 were also studied.
It can be seen that the grains may reunite and form cluster structures under the influence of the surface charge distribution state and adsorption effect.
When the C, Y icons incorporate into TiO2 lattice, energy band structure of TiO2 would change, which is beneficial for the absorption of visible light.
Nano Structured and Materials Vol. 6 (1995), p.831 [20] J.W.

Hybrid Structure of Organic-Inorganic Photovoltaic Fast Carrier Transport Mohammed T.
Fig (1b) is showing the molecular structures related to CuPc and Pc.
Figure (6) is showing that the absorption spectrum related to CuPc/CdS hybrid structures.
Conclusion The hybrid CuPc/CdS/CuPc structures which have been prepared through the pulsed laser deposition approaches are Broadening related to CuPc absorption band in hybrid structure through CdS inclusion.
Hassan," Structural and surface morphology Analysis of Copper Phthalocyanine thin film prepared by pulsed laser deposition and thermal evaporation techniques", Advances in Materials Physics and Chemistry, Vol. pp.6, 85-97, (2016)

This confirms the successful formation of the ZIF-8 crystal structure.
Each crystal branch grows radially from the core, forming a uniform star-shaped structure.
However, this morphology differs from the dodecahedral structure of ZIF-8 reported [26].
Acknowledgment This work was supported by the Research Department of Progresif Bumi Shalawat High School, Sidoarjo, and the Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Surabaya.
Li, "Glucose oxidase and Au nanocluster co-encapsulated metal–organic frameworks as a sensitive colorimetric sensor for glucose based on a cascade reaction," New Journal of Chemistry, vol. 44, no. 31, pp. 13344-13349, 2020

Compared with the original style, the new structure overcame the center-manifold phenomenon.
Following are the structure of original and new distributor.
Structure schematic diagram of two distributors Numerical procedure A commercial CFD code Ansys14.5 provided by Asia-Pacific was used to calculate.
The distribution performance of the new style was much better than the original one, and the improved structure of the new distributor was even better.
Computers and Applied Chemistry, 81, 108-115

The electronic structures of Fluorene derivatives were successfully investigated by density functions theory (DFT).
So through theoretical investigation of electronic structure and molecule orbit by the DFT method, the variational UV-vis absorption spectra of fluorene derivatives due to variational levels were explained.
The molecular orbitals of poly derivatives were reported via DFT calculation, which revealed its molecular geometry and the electronic structures.
The absorption spectra of π-conjugated molecules were accordance with experimental data analyzed by quantum-chemistry method. [11, 12] In the paper，the ground-state energies for fluorene derivatives of 1 and 2 were computed with DFT theory in quantum chemical using the BLYP/DNP level, and the analysis provided insight for the electronic structures.
Results and discussion Fluorene derivatives structures with atom numbering scheme are shown in Fig.1.

In this study, we show the crystallographic data on Yx(Ta3xW1-3x)O3 refine from neutron powder diffraction pattern analysis in order to much understand this trivalent ion conductor from a standpoint of crystal chemistry.
Rietveld structure refinement was carried out with the program RIETAN2000 [4].
RESULT AND DISCUSSION Crystal structures of Y1/3TaO3, were first reported by Studer et al. [5].
The refined crystal structure is shown in Fig 2.
Crystal structure of Y0.22Ta0.66W0.34O3.