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Online since: September 2013
Authors: Ji Wei Hu, Chun Liu, Su Ming Duan, Jin Luo, Miao Jia, Zhi Bin Li
Comparison Study on Adsorption and Removal of Antimony from Acidic Aqueous Solution by Activated Carbons and Machine-made Charcoal
Miao Jia1, a, Jiwei Hu1, b,*, Jin Luo1, c, Suming Duan1, d, Zhibin Li1, e, Chun Liu1, 2, f
1 Guizhou Provincial Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang, 550001, China
2 School of Chemistry and Materials Science, Guizhou Normal University, Guiyang, 550001, China
ajiamiao20101@163.com, *bCorresponding author: jiweihu@yahoo.com, jwhu@gznu.edu.cn, cluojin765@gmail.com, dduansumingzz@163.com, elizhibino816@126.com, fqianlongdabao@163.com
Keywords: activated carbons, machine-made charcoal, adsorption, antimony, kinetics
Abstract.
The chemistry of antimony and its natural occurrence in some water resources combine to create a potent, widespread human health risk.
It has been reported that the results of BET measurements of specific surface areas and pore volume for many activated carbons samples suggested that these indicators were excellent indicators of the carbon’s pore structure.The samples with a high iodine number had a large specific surface area and plenty of small micropores (pore diameter > 1.0 nm).
Maeda, Adsorption and removal of antimony from aqueous solution by an activated Alumina, Toxicological and Environmental Chemistry. 80(2001) 133-144
Norman, Chemistry of arsenic, antimony and bismuth, Blackie Academic & Professional, Thomson Science, London, UK, 1998, 193-199
The chemistry of antimony and its natural occurrence in some water resources combine to create a potent, widespread human health risk.
It has been reported that the results of BET measurements of specific surface areas and pore volume for many activated carbons samples suggested that these indicators were excellent indicators of the carbon’s pore structure.The samples with a high iodine number had a large specific surface area and plenty of small micropores (pore diameter > 1.0 nm).
Maeda, Adsorption and removal of antimony from aqueous solution by an activated Alumina, Toxicological and Environmental Chemistry. 80(2001) 133-144
Norman, Chemistry of arsenic, antimony and bismuth, Blackie Academic & Professional, Thomson Science, London, UK, 1998, 193-199
Online since: March 2020
Authors: Faizah Yunus, Siti Nor Atika Baharin, Muhammad Syazwan Kassim, Syed Shahabuddin, Nur Rahimah Said
Boron Nitride Doped Polypyrrole Hybrid Composites for Photocatalytic Degradation of 2-Chlorophenol from Aqueous Solution
Faizah Yunus1,a, Muhammad Syazwan Kasim1,b, Syed Shahabuddin2,c, Nur Rahimah Said1,d and Siti Nor Atika Baharin1,e*
1School of Chemistry and Environment, Faculty of Applied Sciences Universiti Teknologi MARA, Negeri Sembilan Branch, Kuala Pilah Campus, 72000 Kuala Pilah, Negeri Sembilan, Malaysia
2Research Centre of Nanomaterials and Energy Technology, School of Science and Technology, Sunway University, No. 5, Jalan Universiti, Bandar Sunway, 47500 Selangor, Malaysia
afaizahyns95@gmail.com, bsyazwan.kasim@gmail.com, csyeds@sunway.edu.my, dnurra1435@uitm.edu.my, e*atikabaharin@uitm.edu.my
Keywords: Boron nitride (BN), polypyrrole, photocatalytic degradation, 2-chlorophenol
Abstract.
Structure phase arrangements of the samples were determined using X-ray Diffractometer (XRD) Panalytical model Empyrean at 40 kV and 35 mA using Cu, Kα radiation is λ= 1.54059 Å.
We also acknowledge School of Chemistry and Environment in the Faculty of Applied Science at UiTM Negeri Sembilan, Kuala Pilah Campus for the facilities that have been provided for the research.
Arabian Journal Of Chemistry. 11 (2018) 1000-1016
Journal of Industrial and Engineering Chemistry. 36 (2016) 184-193
Structure phase arrangements of the samples were determined using X-ray Diffractometer (XRD) Panalytical model Empyrean at 40 kV and 35 mA using Cu, Kα radiation is λ= 1.54059 Å.
We also acknowledge School of Chemistry and Environment in the Faculty of Applied Science at UiTM Negeri Sembilan, Kuala Pilah Campus for the facilities that have been provided for the research.
Arabian Journal Of Chemistry. 11 (2018) 1000-1016
Journal of Industrial and Engineering Chemistry. 36 (2016) 184-193
Online since: July 2012
Authors: De Wen Seng
Monte Carlo method
Random factors in the diffusion plays a decisive role of the nature of the random characteristics are reflected in the diffusion model will lead to the randomness in the diffusion structure.
First, the low growth rate, i.e. growth driving force is small, the interface total equilibrium structure.
Production practices and scientific experiments, especially the wide range of applications in materials chemistry, we often encounter a lot of different types of data.
Conclusions Computer technology is now widely used in the field of materials chemistry, mainly on the material composition of the optimization, computer simulation study of expression of curve and demand generation and crystal.
Micromagnetic simulation of structure property relations in hard and soft magnets.
First, the low growth rate, i.e. growth driving force is small, the interface total equilibrium structure.
Production practices and scientific experiments, especially the wide range of applications in materials chemistry, we often encounter a lot of different types of data.
Conclusions Computer technology is now widely used in the field of materials chemistry, mainly on the material composition of the optimization, computer simulation study of expression of curve and demand generation and crystal.
Micromagnetic simulation of structure property relations in hard and soft magnets.
Online since: September 2021
Authors: Olga A. Moskalyuk, Diana V. Volnova, Ekaterina S. Tsobkallo, Galina P. Meshcheryakova
Let us dwell in more detail on the structure and properties of this polymer, since this information is important for our study.
The particles are elongated structures of approximately the same length, not prone to agglomeration (Fig. 1 b).
It should be assumed that both agglomerates and structures of the same type as in CNFs are formed here.
Yudin, Transenergoplastics based on film composite materials, Materials of the 4th International Scientific Conference "Modern trends in the development of chemistry and technology of polymer materials.
Mechanical and electrical conductive properties of polypropylene fibers filled with carbon nanotubes with a functionalized surface, Journal of Applied Chemistry, 85 (2012) 957–962
The particles are elongated structures of approximately the same length, not prone to agglomeration (Fig. 1 b).
It should be assumed that both agglomerates and structures of the same type as in CNFs are formed here.
Yudin, Transenergoplastics based on film composite materials, Materials of the 4th International Scientific Conference "Modern trends in the development of chemistry and technology of polymer materials.
Mechanical and electrical conductive properties of polypropylene fibers filled with carbon nanotubes with a functionalized surface, Journal of Applied Chemistry, 85 (2012) 957–962
Online since: June 2020
Authors: Guntars Vaivars, Kristīne Krūkle-Bērziņa, Madara Markus
Gabedit software [18] was used to visualize the structure and vibration spectra (Fig. 4 and Fig. 6).
The optimization of SPEEK structure geometry and vibration calculations are difficult due to the large size and complicated nature of the system.
Investigated SPEEK structures: (a) – repeat unit, n = 1, 2, 4 and 6; (b) – cross-linked with a sulfo group; (c) – cross-linked with an oxygen atom.
Modern computing allows to model more complex structures.
Allouche, Gabedit — a graphical user interface for computational chemistry softwares, J.
The optimization of SPEEK structure geometry and vibration calculations are difficult due to the large size and complicated nature of the system.
Investigated SPEEK structures: (a) – repeat unit, n = 1, 2, 4 and 6; (b) – cross-linked with a sulfo group; (c) – cross-linked with an oxygen atom.
Modern computing allows to model more complex structures.
Allouche, Gabedit — a graphical user interface for computational chemistry softwares, J.
Online since: March 2013
Authors: Duraisamy Nithyadevi, Ramasamy Thangavelu Rajendrakumar
TiO2 is an n-type semiconductor which exists in three polymorphs namely anatase, brookite and rutile structure.
Isopropyl alcohol was used as solvent which was used for conversion of amorphous structure to crystal structure.
The water and acid took a very important part in the formation of crystalline structure at low temperature.
It is note worthy that adding of Sn precursor alters the growth chemistry and suppresses the formation of brookite phase.
Chinese journal of chemistry.26 (2008), 1787-1792
Isopropyl alcohol was used as solvent which was used for conversion of amorphous structure to crystal structure.
The water and acid took a very important part in the formation of crystalline structure at low temperature.
It is note worthy that adding of Sn precursor alters the growth chemistry and suppresses the formation of brookite phase.
Chinese journal of chemistry.26 (2008), 1787-1792
Online since: February 2015
Authors: Anastasya Timofeeva, Stepan Yusin, E.A. Maximovskiy, Arina Ukhina, Alexander Shibaev, Ksenya Dyukova, Alexander Bannov
Karla Marksa 20, Novosibirsk, 630073, Russia
2Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr.
Akademika Lavrent’eva 3, Novosibirsk, 630090, Russia 3Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, str.
Exfoliated graphite has a graphite structure with expanded crystal lattice and low density.
The interplanar distance in the structure of GO differs significantly from the that of graphite and varies in the range of 3.4 to 12 Å [7-9].
EG forms the porous structure during the synthesis.
Akademika Lavrent’eva 3, Novosibirsk, 630090, Russia 3Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, str.
Exfoliated graphite has a graphite structure with expanded crystal lattice and low density.
The interplanar distance in the structure of GO differs significantly from the that of graphite and varies in the range of 3.4 to 12 Å [7-9].
EG forms the porous structure during the synthesis.
Online since: July 2012
Authors: Shan Shan Huang, Su Xi Wu, Rui Xin Liu, Fei Yao
Effect of microwave treatment on the extraction speed and quality of Camellia seed oil
Ruixin Liua, Fei Yaob, Suxi Wuc, Shanshan Huangd
School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410114, China;
aLiurx8@163.com, bfei5053@126.com, cwsx6524@163.com, dlongteng880830@163.com
Keywords: Camellia seed oil, Microwave treatment, Oil quality, Fatty acid composition
Abstract.
This study analyzed the microscopic structure with and without microwave treatment by scanning electronic microscope in order to research the relationship between camellia seed structure and cell walls damage caused by microwave treatment, which can probably make solvent infiltration and extraction more effectively.
As a result, cell structure of sample were broken, and the bursting of cell membranes primely contributed to the formation of the channel for oil to flow in the membranes.
surface structure without micowave treatment B.
Food Chemistry.
This study analyzed the microscopic structure with and without microwave treatment by scanning electronic microscope in order to research the relationship between camellia seed structure and cell walls damage caused by microwave treatment, which can probably make solvent infiltration and extraction more effectively.
As a result, cell structure of sample were broken, and the bursting of cell membranes primely contributed to the formation of the channel for oil to flow in the membranes.
surface structure without micowave treatment B.
Food Chemistry.
Online since: September 2014
Authors: Suzana Yusup, Yoshimitsu Uemura, Yi Herng Chan, Armando T. Quitain
In the liquefaction process, biomass is treated with solvent/s at high temperature and pressure which acts as a good medium and reactant to break down the complex structure of biomass, thereby producing liquid products.
The properties and the surface structure (SEM imaging) of the oil palm biomass are characterized and shown in Table 1 and Figure 1, respectively.
Thus, it has a less uniform structure and lower degree of crystallinity [7] and can be easily decomposed at lower temperatures between 210-330 °C.
Thus, higher temperature between 300-375 °C is needed to break down and degrade the cellulose structure from the matrix structure of biomass.
Crocker (Ed.), Thermochemical Conversion of Biomass to Liquid Fuels and Chemicals, The Royal Society of Chemistry, United Kingdom, 2010
The properties and the surface structure (SEM imaging) of the oil palm biomass are characterized and shown in Table 1 and Figure 1, respectively.
Thus, it has a less uniform structure and lower degree of crystallinity [7] and can be easily decomposed at lower temperatures between 210-330 °C.
Thus, higher temperature between 300-375 °C is needed to break down and degrade the cellulose structure from the matrix structure of biomass.
Crocker (Ed.), Thermochemical Conversion of Biomass to Liquid Fuels and Chemicals, The Royal Society of Chemistry, United Kingdom, 2010
Online since: July 2015
Authors: Stepan Alexandrovich Lushnikov, Tatyana Victorovna Filippova
The Stability of CeNi3-Based Intermetallic hydrides
LUSHNIKOV Stepan Alexandrovich1, a *and FILIPPOVA Tatyana Victorovna1,b
1Department of Chemistry Lomonosov Moscow State University, Moscow 119991, Russia
alushnikov@hydride.chem.msu.ru, btania.filippova@inorg.chem.msu.ru
Keywords: intermetallic compounds, metal hydrides, phase’s transition, diffusion of hydrogen atoms.
The group of RT3 intermetallic compounds (R-rare earth metal, T - Fe, Co, Ni) crystallizes in PuNi3 (space group R-3m, No. 166) and CeNi3 (space group P63/mmc, No. 194) structure types.
The structure of CeNi3 consists of RT2 (MgZn2 structure type) and RT5 (CaCu5 structure type) blocks, which alternate in the direction perpendicular to the z-axis.
Yartys, New aspects of coordinate chemistry of hydrides of intermetallic compounds: “isotropic” and “anisotropic” structures, Koord.
The group of RT3 intermetallic compounds (R-rare earth metal, T - Fe, Co, Ni) crystallizes in PuNi3 (space group R-3m, No. 166) and CeNi3 (space group P63/mmc, No. 194) structure types.
The structure of CeNi3 consists of RT2 (MgZn2 structure type) and RT5 (CaCu5 structure type) blocks, which alternate in the direction perpendicular to the z-axis.
Yartys, New aspects of coordinate chemistry of hydrides of intermetallic compounds: “isotropic” and “anisotropic” structures, Koord.