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Online since: January 2017
Authors: Zhong Yang Wang, Run Hua Fan, Lei Qian, Qian Qian Li
Result and Discussion
The crystalline structures of the samples with different Ni/Mn molar ratios were characterized using an X-ray diffractometer as shown in Fig. 1.
Blanger: Chemistry of Materials, Vol. 16 (2004) No.16, p3184
Ivey: The Journal of Physical Chemistry C, Vol. 112 (2008) No.38, p15075
Munichandraiah: The Journal of Physical Chemistry C, Vol. 113 (2009) No.15, p6303
Tsai: Materials Chemistry and Physics, Vol. 108 (2008) No.1, p124
Blanger: Chemistry of Materials, Vol. 16 (2004) No.16, p3184
Ivey: The Journal of Physical Chemistry C, Vol. 112 (2008) No.38, p15075
Munichandraiah: The Journal of Physical Chemistry C, Vol. 113 (2009) No.15, p6303
Tsai: Materials Chemistry and Physics, Vol. 108 (2008) No.1, p124
Online since: July 2011
Authors: V. K. Sharma, Suresh C. Ameta, Dipti Vaya, Abhilasha Jain, Savitri Lodha
This multilayer structure will not permit all the particles to be exposed to light and as such, the rate of the reaction become nearly equal.
Yanagida: Journal of Physical Chemistry, 96 (1992) 3521-26
Rusek: Journal of Physical Chemistry, 90 (1986) 824-34
Zhao: Chemistry Letters, 32 (2004) 522
Xie: Journal of Physical Chemistry B, 109 (2005) 18352-5
Yanagida: Journal of Physical Chemistry, 96 (1992) 3521-26
Rusek: Journal of Physical Chemistry, 90 (1986) 824-34
Zhao: Chemistry Letters, 32 (2004) 522
Xie: Journal of Physical Chemistry B, 109 (2005) 18352-5
Online since: September 2013
Authors: Khatijah A. Yaacob, Gooi Wyn Gyn
Introduction
Gold nanoparticles colloid has attracted great attention from many fields such as chemistry, material sciences, biology, medicine and electronic [1,2].
Alkanethiol (CH3-(CH2)n-1-SH) monolayer on (111) gold substrate structure was studied by many researchers from different aspects such as chain length of organic molecule, types of substrate, concentration of the organic solution and so on [4].
Huang, The Journal of Physical Chemistry C, 113(16), (2009), p. 6505-6510
Ko, Analytical and Bioanalytical Chemistry, 399(1), (2011), p. 103-118
Physical Chemistry Chemical Physics, 13(9), (2011), p.3649-3653
Alkanethiol (CH3-(CH2)n-1-SH) monolayer on (111) gold substrate structure was studied by many researchers from different aspects such as chain length of organic molecule, types of substrate, concentration of the organic solution and so on [4].
Huang, The Journal of Physical Chemistry C, 113(16), (2009), p. 6505-6510
Ko, Analytical and Bioanalytical Chemistry, 399(1), (2011), p. 103-118
Physical Chemistry Chemical Physics, 13(9), (2011), p.3649-3653
Online since: March 2019
Authors: Eko Sri Kunarti, Suyanta Suyanta, Dritta Anies Cahaya, Efa Radnawati, Mika Kusuma, Bambang Rusdiarso
Characterization using XRD and FTIR indicated that the ordered structure of MCM-41 could be synthesized by ultrasonic wave.
While based on the TEM image, the material has hexagonal or a honey-comb structure.
Distilled water was obtained from analytical chemistry laboratory of Gadjah Mada University, whereas rice husk was found from a rice milling at Bantul (Yogyakarta Special District, Indonesia).
That instrument was found at Department of Chemistry UGM Yogyakarta Indonesia, except nitrogen adsorption-desorption measurements was found at the Islamic State University of Sunan Kalijaga Yogyakarta Indonesia.
The micrograph of UW(150)-RH-MCM-41 Those hexagonal or honey-comb structure was the distinct feature of MCM-41.
While based on the TEM image, the material has hexagonal or a honey-comb structure.
Distilled water was obtained from analytical chemistry laboratory of Gadjah Mada University, whereas rice husk was found from a rice milling at Bantul (Yogyakarta Special District, Indonesia).
That instrument was found at Department of Chemistry UGM Yogyakarta Indonesia, except nitrogen adsorption-desorption measurements was found at the Islamic State University of Sunan Kalijaga Yogyakarta Indonesia.
The micrograph of UW(150)-RH-MCM-41 Those hexagonal or honey-comb structure was the distinct feature of MCM-41.
Synthesis and Characterization of D-Galactopyranose-Containing Amphiphilic Block Copolymers via ATRP
Online since: November 2010
Authors: Xin De Tang, Mei Shan Pei, Xin Wang, Yuan Yuan Dou
Synthesis and characterization of D-Galactopyranose-containing
amphiphilic block copolymers via ATRP
Xin Wang1, a, Yuanyuan Dou1, b, Meishan Pei1, c and Xinde Tang2, d
1School of Chemistry and Chemical Engineering, University of Ji’nan, 250022, China
2Institute of New Materials, Shandong Jiaotong University, Ji’nan 250023, China
awx_861222@126.com; blady_0512@163.com; cpeims2000@hotmail.com; dxdtang8033@163.com
Keywords: Poly(ethylene glycol); D-galactopyranose; Glycopolymer; Atom transfer radical polymerization
Abstract.
The chemical structure and composition of the resultant polymer MeOPEO-b-PMAIPG were verified by 1H NMR.
Introduction Block copolymers have attracted significant scientific and economic interest over the past few decades owing to their ability to self-assemble into ordered structures [1].
A large number of parameters such as temperature, solvent quality, concentration, pH, molecular structure, weight and composition may affect the aggregation behavior, leading to a wide variety of micellar morphologies [2].
Various polymerization techniques, such as living ionic polymerization, click chemistry, atom transfer radical polymerization (ATRP), and reversible addition-fragmentation chain transfer (RAFT) polymerization, have been employed to synthesize glycopolymers in a controlled manner.
The chemical structure and composition of the resultant polymer MeOPEO-b-PMAIPG were verified by 1H NMR.
Introduction Block copolymers have attracted significant scientific and economic interest over the past few decades owing to their ability to self-assemble into ordered structures [1].
A large number of parameters such as temperature, solvent quality, concentration, pH, molecular structure, weight and composition may affect the aggregation behavior, leading to a wide variety of micellar morphologies [2].
Various polymerization techniques, such as living ionic polymerization, click chemistry, atom transfer radical polymerization (ATRP), and reversible addition-fragmentation chain transfer (RAFT) polymerization, have been employed to synthesize glycopolymers in a controlled manner.
Online since: November 2011
Authors: Zi Li Liu, Shao Feng Yan, Tai Xuan Jia
Preparation and Catalytic Properties of SrFe2O4 in Selective Oxidation
Tai-xuan Jia1,3 ,a, Shao-feng Yan2,b and Zi-li Liu3,c
1 College of Chemistry & Environmental Engineering, Anyang Institute of Technology, Anyang 455000, China
2 College of Mechanical Engineering & Automotion, Liaoning University of Technology, Jinzhou 121004, China,
3College of Chemistry & Chemical Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China
ajiataixuan@163.com, b3910818y@sina.com, c gzdxlzl@163.com
Keywords: SrFe2O4; Sol-gel method; Styrene; Benzaldehyde; Selective oxidation
Abstract.
Micro-structure and essence disciplinarian of strontium ferrate were disclosed.
Properties of SrFe2O4 were associated with its internal structures.
(2) The micro-structure and essential regularity of strontium ferrate were disclosed by XRD detection.
Micro-structure and essence disciplinarian of strontium ferrate were disclosed.
Properties of SrFe2O4 were associated with its internal structures.
(2) The micro-structure and essential regularity of strontium ferrate were disclosed by XRD detection.
Online since: July 2012
Authors: Fa Rong Huang, Zhong Yi Xu, Li Qiang Wan, Lei Du
The FT-IR characterization verified the structure transformation between linear and crosslinked polymer.
Since the advantages of click chemistry had been rediscovered by Sharpless et.al [11, 12], click chemistry had been employed as an efficient synthesis strategy in the preparation of novel functional benzoxazine [13-17].
Thus, the linear polymer could be transformed into crosslinked structure easily without any extra additives.
These peaks mentioned above indicated the existence of triazole ring and benzoxazine structure in the novel linear polymer.
This phenomenon indicated the complete transformation of oxazine structure.
Since the advantages of click chemistry had been rediscovered by Sharpless et.al [11, 12], click chemistry had been employed as an efficient synthesis strategy in the preparation of novel functional benzoxazine [13-17].
Thus, the linear polymer could be transformed into crosslinked structure easily without any extra additives.
These peaks mentioned above indicated the existence of triazole ring and benzoxazine structure in the novel linear polymer.
This phenomenon indicated the complete transformation of oxazine structure.
Online since: January 2012
Authors: Xiao Lin Lu, Zhan Chen, Xin Ping Wang
Introduction
Characterization of structures of surfaces and interfaces at the molecular level is of great scientific and technological importance because it provides an in-depth understanding of the surface and interface structure-property relationships.
These advantages enable SFG to probe surface and interfacial structures at the molecular level in situ.
Hydrogen bonds may form between hydroxyl groups of these phenol groups, which made such a structure more stable.
The SFG spectroscopy provides an advanced approach to get molecular level information of structures on surfaces and at interfaces.
Chen, Orientation Determination of Interfacial b-Sheet Structures in Situ, J.
These advantages enable SFG to probe surface and interfacial structures at the molecular level in situ.
Hydrogen bonds may form between hydroxyl groups of these phenol groups, which made such a structure more stable.
The SFG spectroscopy provides an advanced approach to get molecular level information of structures on surfaces and at interfaces.
Chen, Orientation Determination of Interfacial b-Sheet Structures in Situ, J.
Online since: July 2007
Authors: You Mee Choi, Su Jin Im, Sung Woon Myung, Ho Suk Choi, Ki Nam Park, Kang Moo Huh
Preparation and Swelling Behavior of Superporous Hydrogels: Control
of Pore Structure and Surface Property
You Mee Choi1,a
, Su Jin Im
1,b
, Sung-Woon Myung1,c, Ho-Suk Choi
1,d
Kinam Park2,e, and Kang Moo Huh1,f
1
School of Applied Chemistry and Biological Engineering, Chungnam National University, Daejeon
305-764, South Korea
2
Departments of Biomedical Engineering and Pharmaceutics, Purdue University, West Lafayette
IN47907, USA
a
ymch@cnu.ac.kr, bsujinii84@hanmail.net, csungwoon@cnu.ac.kr, dhchoi@cnu.ac.kr, ,
e
kpark@purdue.edu, f
khuh@cnu.ac.kr
Keywords: Hydrogel, Superporous structure, Fast swelling, Plasma treatment, Wetting agents
Abstract.
The superporous structure could be prepared by using a gas blowing technique that could generate an interconnected pore structure to form open channels for fast water absorption by capillary force.
Surface and inner pore structures of dried SPH samples were observed by SEM.
The superporous structure could not be formed below pH=4 and above pH=5, while the hydrogel with good pore structure could be prepared from the pH values of 4.5 and 4.75.
Pore structures of SPHs.
The superporous structure could be prepared by using a gas blowing technique that could generate an interconnected pore structure to form open channels for fast water absorption by capillary force.
Surface and inner pore structures of dried SPH samples were observed by SEM.
The superporous structure could not be formed below pH=4 and above pH=5, while the hydrogel with good pore structure could be prepared from the pH values of 4.5 and 4.75.
Pore structures of SPHs.
Online since: November 2025
Authors: Ismail Mohd Saaid, Dahlila Kamat
The results show that the migration of fines in sandstone is influenced by several factors including pore structures, clay content, and water chemistry.
Additionally, clay rocks typically have a scaly structure that connects them to the formation through weak van der Waals forces [24,25,26].
Nanoparticles for Formation Fines Fixation and Improving Performance of Surfactant Structure Fluids.
An Advanced Placement Approach for Chemical Sand and Fines Control Using Zeta Potential Altering Chemistry.
A Novel Chemical Sand and Fines Control Using Zeta Potential Altering Chemistry and Placement Technique.
Additionally, clay rocks typically have a scaly structure that connects them to the formation through weak van der Waals forces [24,25,26].
Nanoparticles for Formation Fines Fixation and Improving Performance of Surfactant Structure Fluids.
An Advanced Placement Approach for Chemical Sand and Fines Control Using Zeta Potential Altering Chemistry.
A Novel Chemical Sand and Fines Control Using Zeta Potential Altering Chemistry and Placement Technique.