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Online since: June 2013
Authors: Yi Pai Jiang, Yan Xiu Wang
Nano-materials science, condensed matter physics, colloid chemistry, coordination chemistry, chemical kinetics, surface, interface and other disciplines interdisciplinary is an important part of modern materials science, which is known as the 21st century materials.
The Security of Nanomaterials Size of nanomaterials, chemical composition, surface structure, solubility, shape, and aggregation state, all can affect their biological effects.
Low Wiener material preparation method, such as vacuum condensation method, physical crushing method, the micro emulsion method, physical vapor deposition (PVD), chemical vapor deposition law (CVD), hydrothermal synthesis method can be divided by the structure and morphology of the product was prepared, sol-gel method, etc., the block Nanomaterials methods (such as amorphous crystallization method), and a nano composite material preparation method (such as intercalation compound method) and the like.
Wilson nCode tennis racket nanoscale SiO 2 filled into the pores of the carbon fiber composite material, the material structure to improve the uniformity, higher strength, more solid, which are the Williams sisters in the French Open kinds of racket.
Nano-materials with high specific surface area of the nanoparticles can be easily adsorbed on the textile surface, and the nano-material coating does not affect the permeability and feel of the textile. 2010 Shanghai World Expo on the Institute of Physical Chemistry of the University of Zurich, Switzerland, to develop nano waterproof fabric compelling.
The Security of Nanomaterials Size of nanomaterials, chemical composition, surface structure, solubility, shape, and aggregation state, all can affect their biological effects.
Low Wiener material preparation method, such as vacuum condensation method, physical crushing method, the micro emulsion method, physical vapor deposition (PVD), chemical vapor deposition law (CVD), hydrothermal synthesis method can be divided by the structure and morphology of the product was prepared, sol-gel method, etc., the block Nanomaterials methods (such as amorphous crystallization method), and a nano composite material preparation method (such as intercalation compound method) and the like.
Wilson nCode tennis racket nanoscale SiO 2 filled into the pores of the carbon fiber composite material, the material structure to improve the uniformity, higher strength, more solid, which are the Williams sisters in the French Open kinds of racket.
Nano-materials with high specific surface area of the nanoparticles can be easily adsorbed on the textile surface, and the nano-material coating does not affect the permeability and feel of the textile. 2010 Shanghai World Expo on the Institute of Physical Chemistry of the University of Zurich, Switzerland, to develop nano waterproof fabric compelling.
Online since: April 2014
Authors: Roland Pohle, Angelika Tawil, Polina Davydovskaya
Introduction
Metal Organic Frameworks belong to a relatively new class of porous materials consisting of metal ions linked with organic molecules to 3-dimensional crystalline structures.
Its unsaturated metal sites allow reversible sorption of water molecules into the pores without influencing the structure [10, 11].
Calero, The Journal of Physical Chemistry C, 112 (2008) 15934-15939
Nachtigall, The Journal of Physical Chemistry Letters, 1 (2010) 3354-3359
Sablinskas, Dataset Papers in Chemistry, 2013 (2013) 6.
Its unsaturated metal sites allow reversible sorption of water molecules into the pores without influencing the structure [10, 11].
Calero, The Journal of Physical Chemistry C, 112 (2008) 15934-15939
Nachtigall, The Journal of Physical Chemistry Letters, 1 (2010) 3354-3359
Sablinskas, Dataset Papers in Chemistry, 2013 (2013) 6.
Online since: December 2012
Authors: Mohd Yusri Abdul Rahman, Azizan Ahmad, M. Imperiyka, S.A. Hanifah
Introduction
The science of polymer electrolytes is a unique interdisciplinary field and comprises electrochemistry, polymer science, organic chemistry, and inorganic chemistry.
Shifting and reducing of the peaks confirmed that interaction exist between lithium ions from the doping salt and the oxygen atoms in the structure of the polymer host [10, 11].
Fig.5 FTIR spectrums of (a) pure P(GMA-co-EMA) with LiClO4 with different weight ratios (b) 10% (c) 20% (d) 30%. 3.4 XRD The XRD analysis was used to determine the structure and crystallinity of the polymer–salt complexes.
Infrared analysis conducted on the sample showed that the interaction between lithium ions and oxygen atoms occurred at the carbonyl group, the ether group and epoxy group on the polymer structure in both GMA and EMA.
Material chemistry and physics 125 (2011) 231
Shifting and reducing of the peaks confirmed that interaction exist between lithium ions from the doping salt and the oxygen atoms in the structure of the polymer host [10, 11].
Fig.5 FTIR spectrums of (a) pure P(GMA-co-EMA) with LiClO4 with different weight ratios (b) 10% (c) 20% (d) 30%. 3.4 XRD The XRD analysis was used to determine the structure and crystallinity of the polymer–salt complexes.
Infrared analysis conducted on the sample showed that the interaction between lithium ions and oxygen atoms occurred at the carbonyl group, the ether group and epoxy group on the polymer structure in both GMA and EMA.
Material chemistry and physics 125 (2011) 231
Online since: January 2026
Authors: Masato Ueda, Minami Inoue
In this study, we seeded polyps (coral soft tissue) onto a titanium nonwoven fabric with a three-dimensional porous structure to observe their adhesion behaviour.
X-ray diffraction (XRD) profiles confirmed that only peaks corresponding to α-titanium (hcp structure) were observed, indicating that the formed oxide layer was very thin and had low crystallinity.
Furthermore, some parts of the soft tissue were observed to extend along the contours of the individual titanium fibres, a behaviour known as contact guidance, which is commonly reported for mammalian cells on structured surfaces.
Surface chemistry influences polyp expansion behaviour.
This highlights the importance of optimising scaffold surface chemistry to promote robust coral growth. 3.
X-ray diffraction (XRD) profiles confirmed that only peaks corresponding to α-titanium (hcp structure) were observed, indicating that the formed oxide layer was very thin and had low crystallinity.
Furthermore, some parts of the soft tissue were observed to extend along the contours of the individual titanium fibres, a behaviour known as contact guidance, which is commonly reported for mammalian cells on structured surfaces.
Surface chemistry influences polyp expansion behaviour.
This highlights the importance of optimising scaffold surface chemistry to promote robust coral growth. 3.
Online since: September 2013
Authors: Ya Rui Song, Jian Wei Ma
The oxidation states of iron centers and the structures of ligands determine the reactivities of high-valent iron complexes [2].
Studies of these complexes may increase our understanding of the role of high-valent iron species in the chemistry of enzymes.
For example, the Fe(V)-nitrido complex produces ammonia in reaction with water under reducing conditions, which may have implications for the chemistry of nitrogenase [5].
Knowledge of ferrate redox chemistry is still progressing and increasing our understanding of electron-transfer and oxygen-transfer mechanisms [6].
With increase in pH, proportions of open structures (i.e. active reductant) increase and hence may increase the reaction rate at higher pH.
Studies of these complexes may increase our understanding of the role of high-valent iron species in the chemistry of enzymes.
For example, the Fe(V)-nitrido complex produces ammonia in reaction with water under reducing conditions, which may have implications for the chemistry of nitrogenase [5].
Knowledge of ferrate redox chemistry is still progressing and increasing our understanding of electron-transfer and oxygen-transfer mechanisms [6].
With increase in pH, proportions of open structures (i.e. active reductant) increase and hence may increase the reaction rate at higher pH.
Online since: July 2020
Authors: Darminto Darminto, Masatsune Kato, Takashi Noji, Resky Irfanita, Takayuki Kawamata, Malik Anjelh Baqiya, Putu Eka Dharma Putra, Hidetaka Sato, Fitriana Fitriana
The XRD patterns are detected as the single phase of LSCO with the tetragonal (I4/mmm) structure [12].
Furthermore, the addition of Sr doping may induce more defects in the crystal structure affecting magnetic properties of the cuprate [15].
Xue, Physical Chemistry Chemical Physics 14, 3859 (2012)
Ehrenberg, The Journal of Physical Chemistry A 114, 13362 (2010)
Li, The Journal of Physical Chemistry C 117, 3028 (2013)
Furthermore, the addition of Sr doping may induce more defects in the crystal structure affecting magnetic properties of the cuprate [15].
Xue, Physical Chemistry Chemical Physics 14, 3859 (2012)
Ehrenberg, The Journal of Physical Chemistry A 114, 13362 (2010)
Li, The Journal of Physical Chemistry C 117, 3028 (2013)
Online since: December 2014
Authors: Lu Ying Qiu, Long Gui Peng, Guo Qiang Duan, Ce Wang
Potential of copper ions is greater than the sodium ions, resulting in a double structure of water molecules adsorbed to make the interlayer spacing becomes large
Filler added in an amount of 10%, the coating corrosion time reaches 72h, exhibit good corrosion resistance, which was mainly due to the lamellar structure of the montmorillonite isolated water and chlorine ions, reducing their direct contact with the metal, thereby slowing the rate of corrosion
Pan: Polymer Chemistry (Chemical Industry Publications, China 2007), p.65.
(In Chinese) [6] Lim SK,Kim JW and Chin I:Chemistry of materials, Vol. 14 (2002) No.5, p.1989
[7] Ohsaka T,Ohnuki Y and Oyama N:Journal of electroanalytical chemistry and interfacial electrochemistry,Vol. 161 (1984) No.2, p.399
Filler added in an amount of 10%, the coating corrosion time reaches 72h, exhibit good corrosion resistance, which was mainly due to the lamellar structure of the montmorillonite isolated water and chlorine ions, reducing their direct contact with the metal, thereby slowing the rate of corrosion
Pan: Polymer Chemistry (Chemical Industry Publications, China 2007), p.65.
(In Chinese) [6] Lim SK,Kim JW and Chin I:Chemistry of materials, Vol. 14 (2002) No.5, p.1989
[7] Ohsaka T,Ohnuki Y and Oyama N:Journal of electroanalytical chemistry and interfacial electrochemistry,Vol. 161 (1984) No.2, p.399
Synthesis of Magnetic Nanoparticles Ni0.5Zn0.5Fe2O4 and Ni0.2Cu0.3Zn0.5Fe2O4 for Biodiesel Obtaining
Online since: June 2015
Authors: Joelda Dantas, A.S. Silva, D.C. Barbosa, Simoni Margareti Plentz Meneghetti, K.R.O. Pereira, A.C.F.M. Costa
It is observed that the diffraction curves were similar in both doped and undoped samples, indicating that the copper addition caused partial replacement of these ions in positions that would be occupied by the nickel on the inverse spinel structure without exceeding the solubility limit, confirming the substitution between ions Cu2+ and ions Ni2+ by octahedral coordination sites 6.
Literature reports that these ions have the same type of crystal structure, near electronegativity, the same valance and difference of ionic radius less than 15%, then the complete solubility is easily established [8].
According to the classification of IUPAC - International Union of Pure and Applied Chemistry [11], samples Ni0.5Zn0.5Fe2O4 and Ni0.2Cu0.3Zn0.5Fe2O4 feature profiles of the isotherm type IV according to this kind, it is suggested material with mesoporous characteristic with radius pore between 10 and 250 Å.
It was observed that adding copper in the structure of the starting material, there was a significant increase in the conversion of soybean oil to biodiesel, the best result being displayed performed a reaction by methyl route, being of 13.9%.
[11] IUPAC – International Union of Pure and Applied Chemistry, Handbook vol. 2 (2) 1976
Literature reports that these ions have the same type of crystal structure, near electronegativity, the same valance and difference of ionic radius less than 15%, then the complete solubility is easily established [8].
According to the classification of IUPAC - International Union of Pure and Applied Chemistry [11], samples Ni0.5Zn0.5Fe2O4 and Ni0.2Cu0.3Zn0.5Fe2O4 feature profiles of the isotherm type IV according to this kind, it is suggested material with mesoporous characteristic with radius pore between 10 and 250 Å.
It was observed that adding copper in the structure of the starting material, there was a significant increase in the conversion of soybean oil to biodiesel, the best result being displayed performed a reaction by methyl route, being of 13.9%.
[11] IUPAC – International Union of Pure and Applied Chemistry, Handbook vol. 2 (2) 1976
Online since: June 2012
Authors: Yong Yang, Xiao Fang Chen, Jin Long Jiang, Chen Hong Xu, Yun Hua Qian
Materials of activated carbon (AC) were used as sorbents in FGD [2, 3] for high stability, large surface area, abundant micro-porous structure and surface oxide species.
Fig. 3(a) shows that fibers of ATP were dispersed uniformly and there was much interlayer space due to the layer structure of ATP.
Li, Desulfurization of flue gas using semi-coke as desulfurizer, Environmental Chemistry, 28 (2009) 457-458
Liu, Preparation of Fe/AC desulfurizers, Environmental Chemistry, 21 (2002) 26-29
Liu, Honeycomb cordierrite-based CuO/Al2O3 catalyst for simultaneous SO2 and NO removal from flue gas, Journal of Fuel Chemistry and Technology, 32 (2004) 257-262
Fig. 3(a) shows that fibers of ATP were dispersed uniformly and there was much interlayer space due to the layer structure of ATP.
Li, Desulfurization of flue gas using semi-coke as desulfurizer, Environmental Chemistry, 28 (2009) 457-458
Liu, Preparation of Fe/AC desulfurizers, Environmental Chemistry, 21 (2002) 26-29
Liu, Honeycomb cordierrite-based CuO/Al2O3 catalyst for simultaneous SO2 and NO removal from flue gas, Journal of Fuel Chemistry and Technology, 32 (2004) 257-262
Online since: June 2014
Authors: Nan Jiang, Hui Min Wei, Bao Xiang Gao, Wen Feng Duan, Nan Zhao
The Synthesis and Electro-optical Properties of Perylene Dicarboximide Dimer with Electron Withdrawing Groups
Huimin Wei,1 Nan Zhao,1 Nan Jiang,1 Wenfeng Duan,1 Baoxiang Gao1,2,a
1College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, P.
China. 2 Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education abxgao@hbu.edu.cn Keywords: Perylene dicarboximide, Electron withdrawing groups, Optoelectronic properties, Extinction coefficient, Fluorescence quantum yield.
Perylene dicarboximide (PDIs), the well-known rylenes, have received considerable attention in dye chemistry, supramolecular assemblies, and optoelectronic applications because of their exceptional properties, such as photochemical stabilities, high quantum yields[8], and ability to self-assemble into ordered supramolecular structures[9].
Structures of all these products were confirmed by 1H-NMR and 13C-NMR spectra.
Bianco, Specific interactions with intra- and intermolecular G-quadruplex DNA structures by hydrosoluble coronene derivatives: A new class of telomerase inhibitors, Bioorg.
China. 2 Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education abxgao@hbu.edu.cn Keywords: Perylene dicarboximide, Electron withdrawing groups, Optoelectronic properties, Extinction coefficient, Fluorescence quantum yield.
Perylene dicarboximide (PDIs), the well-known rylenes, have received considerable attention in dye chemistry, supramolecular assemblies, and optoelectronic applications because of their exceptional properties, such as photochemical stabilities, high quantum yields[8], and ability to self-assemble into ordered supramolecular structures[9].
Structures of all these products were confirmed by 1H-NMR and 13C-NMR spectra.
Bianco, Specific interactions with intra- and intermolecular G-quadruplex DNA structures by hydrosoluble coronene derivatives: A new class of telomerase inhibitors, Bioorg.