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Online since: January 2010
Authors: Nikola Koprinarov, Mariana Konstantinova, Miko Marinov
., 1784 Sofia, Bulgaria
2
Institute of Physical Chemistry, Bulgarian Academy of Sciences, bl. 11 Acad.
Geometry of electrodes, distance between them, work atmosphere and ambient temperature are the important factors, which determine quantity and variety of structures synthesized via arc discharge.
It showed high productivity and the synthesized structures possessed excellent quality.
The covering of large areas by homogenous structures was also valuable for their application as gas sensors and for medical purposes, due to their very large active surface.
Geometry of electrodes, distance between them, work atmosphere and ambient temperature are the important factors, which determine quantity and variety of structures synthesized via arc discharge.
It showed high productivity and the synthesized structures possessed excellent quality.
The covering of large areas by homogenous structures was also valuable for their application as gas sensors and for medical purposes, due to their very large active surface.
Online since: July 2011
Authors: Guo Lin Jing, Quan Zhou, Song Tao Li, Wen Ting Du
Studying fitting effect by ANFIS in the electrodialysis process
Jing Guolin1,a, Du Wenting1,a, Zhou Quan2, Li Songtao3
1College of Chemistry and Chemical Engineering, Northeastern Petroleum University, Daqing 163318, People’s Republic of China
2Daqing Oilfieid Engineering Co.Ltd.
Besides, ANFIS(Adaptive Neuro-Fuzzy Inference System) based on Sugeno fuzzy model, its structure was similar to neural network and could generate fuzzy rules automatically, using the error back propagation algorithm and least square method to adjust the parameters of fuzzy inference system.
ANFIS generated model structure (Fig. 1): Voltage Flow rate Temperature Concentration SP input inputmf rule outputmf output Fig. 1 ANFIS node structure Experimental 1) Experimental principle Electrodialysis technology is one of membrane separation technologies.
Besides, ANFIS(Adaptive Neuro-Fuzzy Inference System) based on Sugeno fuzzy model, its structure was similar to neural network and could generate fuzzy rules automatically, using the error back propagation algorithm and least square method to adjust the parameters of fuzzy inference system.
ANFIS generated model structure (Fig. 1): Voltage Flow rate Temperature Concentration SP input inputmf rule outputmf output Fig. 1 ANFIS node structure Experimental 1) Experimental principle Electrodialysis technology is one of membrane separation technologies.
Online since: July 2021
Authors: Haleemah J. Mohammed
Experiments were conducted to study the surface topography of the nano compound by (AFM) to determine the roughness of the prepared electrode, In addition, the structure characteristics were studied using the x-ray diffraction (XRD) to determine the main phase.
Recently, researchers have increased their interest in nanoparticles oxides. [3,4] Nanoparticles offer unprecedented progress in many sectors to control their nanomaterials to produce new structures, materials, and devices. [5,6] Fe2O3 is one of the cheapest available semiconductor materials that can absorb visible light, collect up to 45% of the surface spectrum and show a strong stimulus activity widely and easily available, which is environmentally friendly.[7] Researchers are looking extensively at simple and economical precipitation techniques for the development of nanoparticles, A suitable alternative to existing semiconductors.
Values for the combination of iron oxides and Tin differed from those of single oxides, Indicating a new synergy between iron oxide and CO3O5, (001), (111), (110), (200), (001), and (211), polycrystalline structure and this is consistent as agree with published previously, as shown in Fig.7 Fig. 7.
Martin, (2008). vol.516, pp.1716, [9] Miranzadeh, M., Afshari, F., Khataei, B., Kassaee, M., Advanced Journal of Chemistry -Section A, 3(4): 408-421. (2020)
Recently, researchers have increased their interest in nanoparticles oxides. [3,4] Nanoparticles offer unprecedented progress in many sectors to control their nanomaterials to produce new structures, materials, and devices. [5,6] Fe2O3 is one of the cheapest available semiconductor materials that can absorb visible light, collect up to 45% of the surface spectrum and show a strong stimulus activity widely and easily available, which is environmentally friendly.[7] Researchers are looking extensively at simple and economical precipitation techniques for the development of nanoparticles, A suitable alternative to existing semiconductors.
Values for the combination of iron oxides and Tin differed from those of single oxides, Indicating a new synergy between iron oxide and CO3O5, (001), (111), (110), (200), (001), and (211), polycrystalline structure and this is consistent as agree with published previously, as shown in Fig.7 Fig. 7.
Martin, (2008). vol.516, pp.1716, [9] Miranzadeh, M., Afshari, F., Khataei, B., Kassaee, M., Advanced Journal of Chemistry -Section A, 3(4): 408-421. (2020)
Properties and Applications of Dielectric Materials Derived from Metal-Organic Frameworks - A Review
Online since: May 2023
Authors: Santosh S. Nandi, B. Thirumalaiyammal, Shankramma S. Kerur, N. Mujafarkani, Vinayak Adimule, Abhinay Gupta
ORCiD - http://www.orcid.org/0000-0003-3845-6014
3Department of Chemistry, Angadi Institute of Technology and Management (AITM), Savagaon Road, Belagavi-5800321, Karnataka, India.
This can be achieved by reducing the size of the particles or by creating hierarchical structures with controlled porosity [42,43].
Adarsha Gowda, Crystal Structure, Morphology, Optical and Super-Capacitor Properties of Srx: α-Sb2O4 Nanostructures.
Jagadeesha, Synthesis, impedance, and current-voltage spectroscopic characterization of novel gadolinium titanate nano structures.
Kalpana, Studies on crystal structure, morphology, optical and photoluminescence properties of flake-like Sb doped Y2O3 nanostructures.
This can be achieved by reducing the size of the particles or by creating hierarchical structures with controlled porosity [42,43].
Adarsha Gowda, Crystal Structure, Morphology, Optical and Super-Capacitor Properties of Srx: α-Sb2O4 Nanostructures.
Jagadeesha, Synthesis, impedance, and current-voltage spectroscopic characterization of novel gadolinium titanate nano structures.
Kalpana, Studies on crystal structure, morphology, optical and photoluminescence properties of flake-like Sb doped Y2O3 nanostructures.
Online since: November 2022
Authors: Zahoor Ahmad, Sadia Sharif, Clare Hoskins, Muhammad Aziz Choudhary, Arshad Mehmood
These are aimed to regulate their morphologies, structures, and properties.
It is directly linked with the existence of amorphous domains or distorted crystal structures within each sample of Ag.
The E4D3 sample demonstrated a more intense peak compared to the others, where existence of small particles and ultrathin Ag NWs is also the dominant structure, as shown by SEM in Figure 2.
The existence of such domains or structures are highly desired for the confinement of electrons and tuning conductivity.
Banach, Silver nanoparticles–a material of the future, Open Chemistry 2016, 14 (1), 76-91. https://doi.org/10.1515/chem-2016-0005 [12] Meshesha, B.
It is directly linked with the existence of amorphous domains or distorted crystal structures within each sample of Ag.
The E4D3 sample demonstrated a more intense peak compared to the others, where existence of small particles and ultrathin Ag NWs is also the dominant structure, as shown by SEM in Figure 2.
The existence of such domains or structures are highly desired for the confinement of electrons and tuning conductivity.
Banach, Silver nanoparticles–a material of the future, Open Chemistry 2016, 14 (1), 76-91. https://doi.org/10.1515/chem-2016-0005 [12] Meshesha, B.
Online since: February 2013
Authors: Miao Sun, Jing Wen Xu, Yu Cui, Gong Lian Wu, Hui Zhang, Ze Sheng Li
Theoretical Study of Adsorption CO Molecule on Palladium-Doped Boron Nitride Nanotubes
Miao Sun1,a; Jingwen Xu1; Yu Cui1; Gonglian Wu1;Hui Zhang1; Zesheng Li2,b
1 Key Laboratory of Green Chemical Technology of College of Heilongjiang Province,
College of Chemistry and Environmental Engineering, Harbin University of Science and Technology, Harbin 150080, China;
2 Key Laboratory of Cluster Science, Ministry of Education of China, College of Chemistry, Beijing Institute of Technology, Beijing, 100081, China.
Makaev and D’yachkov [12] studied the effect of intrinsic defects and isoelectronic substitutional impurities on the electronic structure of BNNTs.
They found that the defects significantly affected the band structure of the BNNTs, which reduced the width of the gap.
Figure 1 The optimized structures of the pristine (5, 5) BNNT (a); (6, 6) BNNT (b), respectively.
RESULTS 3.1 Pd-Doped BNNT The optimized structures of Pd-doped B or N site of (5, 5) and (6, 6), are displayed in Figure 2 respectively.
Makaev and D’yachkov [12] studied the effect of intrinsic defects and isoelectronic substitutional impurities on the electronic structure of BNNTs.
They found that the defects significantly affected the band structure of the BNNTs, which reduced the width of the gap.
Figure 1 The optimized structures of the pristine (5, 5) BNNT (a); (6, 6) BNNT (b), respectively.
RESULTS 3.1 Pd-Doped BNNT The optimized structures of Pd-doped B or N site of (5, 5) and (6, 6), are displayed in Figure 2 respectively.
Online since: February 2019
Authors: M.D. Sokolova, A.F. Fedorova, V.V. Pavlova
The structure of plasticizers: a - DOP, b – TOTM, c - DOA, d - DINP.
Plasticizer molecules penetrate into any polymer structures, gradually destroying them.
The finest monomolecular layers facilitating mobility of the supramolecular structures [12-15] are formed.
Tager, Physics and chemistry of polymers, Nauchnyj mir, Moscow, 2007
Thinius, Chemistry, physics and technology of plasticizers, Himija, Moscow & Leningrad, 1964
Plasticizer molecules penetrate into any polymer structures, gradually destroying them.
The finest monomolecular layers facilitating mobility of the supramolecular structures [12-15] are formed.
Tager, Physics and chemistry of polymers, Nauchnyj mir, Moscow, 2007
Thinius, Chemistry, physics and technology of plasticizers, Himija, Moscow & Leningrad, 1964
Online since: April 2015
Authors: Robert Shanks, Rui Pan, Yong Liu
The Effect of Humping Semi-enclosed Cage Structure on Polymer Chains Characteristics of TSI-POSS/PU Hybrid Composites
Rui Pan1, a, Robert Shanks2,b , Yong Liu1,c
1 Chemistry and Material Science College, Sichuan Normal University; Key Laboratory of Special Waste Water Treatment, Sichuan Province Higher Education System, Chengdu City, PRC, 610041.
2 School of Applied Sciences, RMIT University, GPO Box 2476 Melbourne VIC 3001, Australia.
Since experimental techniques are limited and expensive in probing some detailed structure-property relationship of hybrid composites at a molecular level, molecular dynamics (abbreviation MD) and molecular mechanics (abbreviation MM) are preferred methodologies to properly understand and elucidate the modified aggregation structure and properties of hybrid composites by POSS incorporation at various concentrations.
The goal of our work reported here is to elucidate the effect of humping semi-enclosed cage structure on polymer chains characteristics of TSI-POSS/PU by experiments and molecular simulation approach.
The molecular structures of TSI-POSS /PU hybrid composite are shown in Figure 1.
Thus, the motion restrictions of polymer chains imposed by the humping semi-enclosed cage structure can be evaluated by elucidating the mobility of atoms in polymer chains with and without the TSI-POSS incorporation.
Since experimental techniques are limited and expensive in probing some detailed structure-property relationship of hybrid composites at a molecular level, molecular dynamics (abbreviation MD) and molecular mechanics (abbreviation MM) are preferred methodologies to properly understand and elucidate the modified aggregation structure and properties of hybrid composites by POSS incorporation at various concentrations.
The goal of our work reported here is to elucidate the effect of humping semi-enclosed cage structure on polymer chains characteristics of TSI-POSS/PU by experiments and molecular simulation approach.
The molecular structures of TSI-POSS /PU hybrid composite are shown in Figure 1.
Thus, the motion restrictions of polymer chains imposed by the humping semi-enclosed cage structure can be evaluated by elucidating the mobility of atoms in polymer chains with and without the TSI-POSS incorporation.
Online since: August 2017
Authors: Prabhat Ranjan, Tanmoy Chakraborty, Ajay Kumar
Jena, Structure and bonding of Au5M (M=Na, Mg, Al, Si, P and S) clusters, Phys.
Johnston, Global optimization of bimetallic cluster structures.I.
Clausen, Structure and reactivity of Ni-Au nanoparticle catalysts, J.
Truhlar, Density functional theory for transition metals and transition metal chemistry, Phys.
Parr, Density functional theory of electronic structure, J.
Johnston, Global optimization of bimetallic cluster structures.I.
Clausen, Structure and reactivity of Ni-Au nanoparticle catalysts, J.
Truhlar, Density functional theory for transition metals and transition metal chemistry, Phys.
Parr, Density functional theory of electronic structure, J.
Online since: December 2011
Authors: Hong Liang Wang, Jun Hao Zhang, Zhao Kun Qu, Liang Jia, Jiao Long Wang
Synthesis and photoluminescence property of tris(8-hydroxyquinoline) bismuth rod-like structures at room temperature
Hongliang Wanga, Junhao Zhanga,b*, Zhaokun Qua, Liang Jiaa,
Jiaolong Wanga
a School of Biological and Chemical Engineering; Jiangsu University of Science and Technology; Zhenjiang Jiangsu 212018, People’s Republic of China
bSchool of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong 250100, China
aE-mail: jhzhang6@mail.ustc.edu.cn
Keywords: organometallic compounds; chemical synthesis; electron microscopy; optical properties.
The observation of FESEM and TEM shows that the morphology of tris(8-hydroxyquinoline) bismuth complexes is rod-like structure.
To further ascertain the structure and component of the products, the samples were also characterized by FTIR spectra.
The typical TEM images reveal that the products are rod-like structure.
Compared with 8-hydroxyquinoline, the BiQ3 rods exhibit stronger emission, which could be attributed to the inorganic elements, morphology and structure impacting the optical absorption.
The observation of FESEM and TEM shows that the morphology of tris(8-hydroxyquinoline) bismuth complexes is rod-like structure.
To further ascertain the structure and component of the products, the samples were also characterized by FTIR spectra.
The typical TEM images reveal that the products are rod-like structure.
Compared with 8-hydroxyquinoline, the BiQ3 rods exhibit stronger emission, which could be attributed to the inorganic elements, morphology and structure impacting the optical absorption.