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Online since: June 2013
Authors: Wei Xing Chen, Hong Shu Chen, Wen Zhi Zhang, Yang Jing Lin, Jian Long Zheng, Xin Li Jing
Study of Hybrid Photovoltaic Materials with Poly (3-hexylthiophene) and CdS Nanoparticles by Spectroscopic Techniques
Wenzhi Zhang1,a*, Yangjing Lin2, Jianlong Zheng1,b, Hongshu Chen1,
Weixing Chen2, Xinli Jing3
1Architectural Engineering Institute of General Logistics Department, Xi’an 710032, China
2Key Laboratory for Photoelectric Functional Materials and Devices of Shaanxi Province, School of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, China
3Department of Applied Chemistry, School of Science, Xi'an Jiaotong University, Xi’an 710049, China
azhangwenzhi2000@126.com, bjlzheng23@hotmail.com
Keywords: Poly (3-hexylthiophene); Hybrid; Photovoltaic materials; Spectroscopic technique; CdS nanoparticles
Abstract.
Researchers have developed various strategies to incorporate these novel structures into suitable solar conversion systems [2,3].
The agglomeration of particles will induce the phase separation of systems, which would promote the formation of heterojunction structure in films.
Su, Molecular structure effect of pyridine-based surface ligand on the performance of P3HT:TiO2 hybrid solar cell, ACS Appl.
Researchers have developed various strategies to incorporate these novel structures into suitable solar conversion systems [2,3].
The agglomeration of particles will induce the phase separation of systems, which would promote the formation of heterojunction structure in films.
Su, Molecular structure effect of pyridine-based surface ligand on the performance of P3HT:TiO2 hybrid solar cell, ACS Appl.
Online since: April 2019
Authors: Sedigheh Ghadamgahi
How Recyclability Can Reduce Induction Period of Gold Nanocatalysts
Sedigheh Ghadamgahi
Department of Chemistry, East Tehran Branch, Islamic Azad University, Tehran, Iran
Email: maghadamgahi@gmail.com
Keywords: induction period, Au101 nanocatalysts, recyclability, benzyl alcohol oxidation, activations
Abstract.
The gold particles were washed with hot toluene at 100 ± 2 °C for 2 h and then the catalysts activation was performed in static air at 100 ± 2 oC for 3 h (as-synthesized 1.0 wt% Au101/AC). 2.2 Characterization The morphology and structure of the gold catalysts before and after the reaction tests were characterized by using a Philips CM20, operating at 200 kV and equipped with energy‒dispersive spectrometer (EDS) for electron probe microanalysis bright-field high-resolution transmission electron microscopy (TEM).
Guczi, Gold nanoparticles: Effect of treatment on structure and catalytic activity of Au/Fe2O3 catalyst prepared by co‐precipitation, Catal.
Guczi, Sol derived gold-palladium bimetallic nanoparticles on TiO2: Structure and catalytic activity in CO oxidation, Top.
The gold particles were washed with hot toluene at 100 ± 2 °C for 2 h and then the catalysts activation was performed in static air at 100 ± 2 oC for 3 h (as-synthesized 1.0 wt% Au101/AC). 2.2 Characterization The morphology and structure of the gold catalysts before and after the reaction tests were characterized by using a Philips CM20, operating at 200 kV and equipped with energy‒dispersive spectrometer (EDS) for electron probe microanalysis bright-field high-resolution transmission electron microscopy (TEM).
Guczi, Gold nanoparticles: Effect of treatment on structure and catalytic activity of Au/Fe2O3 catalyst prepared by co‐precipitation, Catal.
Guczi, Sol derived gold-palladium bimetallic nanoparticles on TiO2: Structure and catalytic activity in CO oxidation, Top.
Online since: January 2019
Authors: Yu Sun, Sen Yang, Vannghia Tran, Dao Zhang, Wen Bin Wang
In the figure, some cells maintain structure integrity.
It means that the contact of bacteria with Cu2+ may damage the cell structure, thus killing bacteria.
The contact of bacteria with Cu2+ may damage the cell structure, like breaking the cell wall and membrane, thus killing bacteria.
Current medicinal chemistry. 2005, 12(18): 2163-2175
It means that the contact of bacteria with Cu2+ may damage the cell structure, thus killing bacteria.
The contact of bacteria with Cu2+ may damage the cell structure, like breaking the cell wall and membrane, thus killing bacteria.
Current medicinal chemistry. 2005, 12(18): 2163-2175
Online since: May 2019
Authors: Radek Prikryl, Veronika Melcova, Martina Repiska, Dagmara Perdochova, Sona Kontarova, Premysl Mencik
Biodegradable Composite Materials Based on Poly(3Hydroxybutyrate) for 3D Printing Applications
MENCIK Premysl1*, MELCOVA Veronika1, KONTAROVA Sona1,
PRIKRYL Radek1, PERDOCHOVA Dagmara2, REPISKA Martina2
1Brno University of Technology, Faculty of Chemistry, Purkynova 464/118, 612 00 Brno, Czech Republic
2Slovak University of Technology in Bratislava, Faculty of Chemical and Food Technology, Radlinskeho 9, 812 37 Bratislava, Slovak Republic
*mencik@fch.vutbr.cz
Keywords: Poly(3-hydroxybutyrate), Kaolin, Limestone, Bio-composite, 3D print.
From the point of view of material structure it is the inner tension in the printed object caused by gradual shrinkage of individual layers.
The macroscopic structure of printed composite samples and samples with unfilled matrix was observed by optical microscopy.
Fig. 3 Warp coefficient of unfilled polymers and composite samples filled with kaolin and limestone Fig. 4 shows cross-section fragile fracture areas of examined samples, which were printed in order to compare the macroscopic structure.
From the point of view of material structure it is the inner tension in the printed object caused by gradual shrinkage of individual layers.
The macroscopic structure of printed composite samples and samples with unfilled matrix was observed by optical microscopy.
Fig. 3 Warp coefficient of unfilled polymers and composite samples filled with kaolin and limestone Fig. 4 shows cross-section fragile fracture areas of examined samples, which were printed in order to compare the macroscopic structure.
Online since: April 2020
Authors: Luiz Carlos Pereira, Sandro Griza, Abraão Silva, Weslley Rick Viana Sampaio, Thiago Figueiredo Azevedo
Titanium exhibits polymorphic transformation from the hexagonal compact α-phase structure, which occurs below 883 °C, to the cubic centered body structure, β-phase, above this temperature.
The crystalline structures of α” and β are very similar.
Caram, “Orthorhombic martensite formation upon aging in a Ti-30Nb-4Sn alloy,” Materials Chemistry and Physics, vol. 183, pp. 238-246, 2016
The crystalline structures of α” and β are very similar.
Caram, “Orthorhombic martensite formation upon aging in a Ti-30Nb-4Sn alloy,” Materials Chemistry and Physics, vol. 183, pp. 238-246, 2016
Online since: August 2020
Authors: Narumon Seeponkai, Krisana Poolsawat
At the initial (0 week), the tensile strength of PLA higher than PBS polymer due to the chemical structure of PLA is hard and brittle, while PBS is a ductile polymer.
The result could imply that the mechanical properties of PLA decreased faster than PBS because of the low crystallinity of the polymer structure.
Yamaguchi, Structure and properties for biomass-based polyester blends of PLA and PBS, Eur.
Hutmacher, Degradation mechanisms of polycaprolactone in the context of chemistry, geometry and environment, Prog.
The result could imply that the mechanical properties of PLA decreased faster than PBS because of the low crystallinity of the polymer structure.
Yamaguchi, Structure and properties for biomass-based polyester blends of PLA and PBS, Eur.
Hutmacher, Degradation mechanisms of polycaprolactone in the context of chemistry, geometry and environment, Prog.
Online since: January 2022
Authors: Giovanni Dotelli, Valeria Arosio, Chiara Moletti
Dotelli1,c
1Politecnico di Milano, Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, piazza Leonardo da Vinci 32, 20133 Milan, Italy
a*Corresponding author: chiara.moletti@polimi.it, bvaleria.arosio@polimi.it, cgiovanni.dotelli@polimi.it
Keywords: Hempcrete; blocks; carbonation; characterization; hemp.
Constituent Diffraction angles [°2Θ] Calcite 23.07; 29.43; 36.02; 39.40; 43.15; 47.55; 48.52; Aragonite 27.19; 32.79; 42.92; Dolomite 30.96; 37.39; 41.19; 45.00; Portlandite 18.05; 34.12; Brucite 18.58; 37.94; Calcium oxide 37.39 Periclase 42.84 Moreover, the larger amount of calcium carbonates formed in the samples having 330 kg/m3 density with respect to the 500 kg/m3 ones can be attributed to the structure of the material, which is characterised by larger porosity and hence a larger surface exposed to carbon dioxide.
SEM-EDX give indication about the microstructure of the material and integrates the compositional information to investigate how the vegetal aggregate and the binder interact to give the final properties and structure of the material.
Materials and Structures/Materiaux et Constructions, 50(3). https://doi.org/10.1617/s11527-017-1046-2
Constituent Diffraction angles [°2Θ] Calcite 23.07; 29.43; 36.02; 39.40; 43.15; 47.55; 48.52; Aragonite 27.19; 32.79; 42.92; Dolomite 30.96; 37.39; 41.19; 45.00; Portlandite 18.05; 34.12; Brucite 18.58; 37.94; Calcium oxide 37.39 Periclase 42.84 Moreover, the larger amount of calcium carbonates formed in the samples having 330 kg/m3 density with respect to the 500 kg/m3 ones can be attributed to the structure of the material, which is characterised by larger porosity and hence a larger surface exposed to carbon dioxide.
SEM-EDX give indication about the microstructure of the material and integrates the compositional information to investigate how the vegetal aggregate and the binder interact to give the final properties and structure of the material.
Materials and Structures/Materiaux et Constructions, 50(3). https://doi.org/10.1617/s11527-017-1046-2
Online since: December 2023
Authors: Kaveh Edalati, Ikuo Taniguchi, Ricardo Floriano, Augusto Ducati Luchessi
Since strain under high pressure can influence the structure of organic materials [40,41], the effect of strain should be considered in the simulation of astronomical impacts.
Raman and XRD analyses shown in Fig. 3a and 3b, respectively, confirm that glycine after HPT processing can maintain its structure, which is in good agreement with shock experiments [35-37].
Kulnitskiy, The effect of severe plastic deformations on phase transitions and structure of solids, Mater.
Winans, Experimental shock chemistry of aqueous amino acid solutions and the cometary delivery of prebiotic compounds, Origins Life Evol.
Raman and XRD analyses shown in Fig. 3a and 3b, respectively, confirm that glycine after HPT processing can maintain its structure, which is in good agreement with shock experiments [35-37].
Kulnitskiy, The effect of severe plastic deformations on phase transitions and structure of solids, Mater.
Winans, Experimental shock chemistry of aqueous amino acid solutions and the cometary delivery of prebiotic compounds, Origins Life Evol.
Online since: November 2016
Authors: Jörg Franke, Sven Kreitlein, Fabian Baumhoer, Fabian Ultsch
Therefore, immediate action is required in order to decrease the energy consumption as a sustainable pillar of the energy transition. [7] Because of its substantial leverage effect, the manufacturing industry carries great weight as an important driver of the energy consumption in Germany; its different industries have relative saving potentials of up to over 20%. [4]
For the identification of highly efficient production structures a comparison to derive specific saving potentials is possible.
Only by means of this is it possible to identify highly efficient production structures and specific saving potentials that can be a positive example and reference.
Thus, in order to calculate the minimum value, it is necessary to define a calculation system that takes specific influential variables of the production process into account in a structured way.
The model of the activation energy as a basis to describe the existence of a Least Energy Demand A model from the chemistry field serves as a basis for the model concept to be developed.
Only by means of this is it possible to identify highly efficient production structures and specific saving potentials that can be a positive example and reference.
Thus, in order to calculate the minimum value, it is necessary to define a calculation system that takes specific influential variables of the production process into account in a structured way.
The model of the activation energy as a basis to describe the existence of a Least Energy Demand A model from the chemistry field serves as a basis for the model concept to be developed.
Online since: July 2017
Authors: Adanti Wido Paramadini, Djoni Izak Rudyardjo, Prihartini Widiyanti
SEM Characterization will capture images of the sample surface so that the practitioner can easily identify whether variations in sample composition affect the surface and pore structure of the sample or not.
Collagen has a complicated structure and it consisted of fibrils that allow the formation of a network that is capable of interacting with other molecules.
According to Figure 3 (b), it showed that the bacterial cellulose-collagen 0.4% with a magnification of 10.000X showe the structure of collagen that has been lining and filling the bacterial cellulose surface homogeneously.
[12] Sybele Saska, Lucas Nvaes Teixira, Paulo Tambasco de Oliveira, Ana Maria Gaspar, Sidney Jose Lima Ribeiro, Younes Messade, Reinaldo Marchetto, Bacterial Celllose-Collagen Nanocomposie for Bone Tissue Engineering, The Royal Society of Chemistry, (2012)
Collagen has a complicated structure and it consisted of fibrils that allow the formation of a network that is capable of interacting with other molecules.
According to Figure 3 (b), it showed that the bacterial cellulose-collagen 0.4% with a magnification of 10.000X showe the structure of collagen that has been lining and filling the bacterial cellulose surface homogeneously.
[12] Sybele Saska, Lucas Nvaes Teixira, Paulo Tambasco de Oliveira, Ana Maria Gaspar, Sidney Jose Lima Ribeiro, Younes Messade, Reinaldo Marchetto, Bacterial Celllose-Collagen Nanocomposie for Bone Tissue Engineering, The Royal Society of Chemistry, (2012)