Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: February 2011
Authors: Fen Wang, Jian Feng Zhu, Hai Bo Yang, Guo Quan Qi, Hai Bo Mao
Synthesis of Pr6O11 doped ZnO-based varistors by pyrogenic decomposition of nitrate
Jianfeng Zhua, Guoquan Qib, Haibo Mao, Haibo Yang and Fen Wang
Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education
Shaanxi University of Science & Technology, Xi’an 710021, People’s Republic of China
azhujf@sust.edu.cn, bqgqstar@163.com
Keywords: ZnO; varistors; microstructure; electrical properties
Abstract: Pr6O11 doped ZnO-based varistor powders were prepared by a method of pyrogenic decomposition nitrate, which were together with ZnO powders, made into rounded mass and sintered at different temperatures.
The structure of the varistor consists of a matrix of conductive zinc oxide grains separated by grain boundaries, which provide p-n junction semiconductor characteristics.
The structure of the varistor consists of a matrix of conductive zinc oxide grains separated by grain boundaries, which provide p-n junction semiconductor characteristics.
Online since: June 2011
Authors: Xiao Heng Liu, Ke Jie Zhang, Hong Yan Zhou
Sputtering phenomena of ZnS nanomaterial by impacting of high-energy electron in a transmission electron microscope
Kejie Zhang1a, Hongyan Zhou2b, Xiaoheng Liu1c
1 Key Laboratory of Soft Chemistry and Functional Materials of the Ministry of Education, Nanjing University of Science and Technology, Jiangsu Province, Nanjing, People’s Republic of China
2 Jiyuan Vocational and Technical College, Henan province, Jiyuan, People’s Republic of China
a zhangkejie2003@163.com, b zhouhongyan188@163.com, c liuxh599@163.com
Keywords: ZnS; Nanoparticles; High-energy beams; Well-dispersed
Abstract: An interesting sputtering phenomenon was shown when ZnS nanomaterial was irradiated by high-energy beams in a transmission electron microscope (TEM).
The morphology characterization and structure analysis were used a scanning electron microscope (SEM, JEOL-6380LV) and a transmission electron microscope (TEM, JEOL-2100).
The morphology characterization and structure analysis were used a scanning electron microscope (SEM, JEOL-6380LV) and a transmission electron microscope (TEM, JEOL-2100).
Online since: November 2012
Authors: Mao Fang Huang, Tian Ming Gao, Rui Hong Xie, Pu Wang Li, Zhi Ping Han, Hong Lian Chen
And properties of modified NC, such as structure, diffusion, were studied.
Agblevor, Carbohydrate Polymers. 81 (2010) 811-819 [9] El hadji Babacar Ly, Julien Bras, Patrizia Sadocco, Mohamed Naceur Belgacem, Alain Dufresne, Wim Thielemans, Materials Chemistry and Physics. 120 (2010) 438-455.
Agblevor, Carbohydrate Polymers. 81 (2010) 811-819 [9] El hadji Babacar Ly, Julien Bras, Patrizia Sadocco, Mohamed Naceur Belgacem, Alain Dufresne, Wim Thielemans, Materials Chemistry and Physics. 120 (2010) 438-455.
Online since: December 2012
Authors: Pan Li, Xu Ma, Zhang Jian
So large extrusion ratio is good to make structure finer and improve mechanical properties of thick wall tube.
Acknowledgements This work was supported by Ministry of Industry and Information Technology of the People's Republic of China support project under Grant No.2009ZX04014-063-03, the National Natural Science Foundation of China(No.50975205), Key Technology Support Program of Tianjin China(No.12ZCZDGX00600), and Tianjin Key Subject for Materials Physics and Chemistry.
Acknowledgements This work was supported by Ministry of Industry and Information Technology of the People's Republic of China support project under Grant No.2009ZX04014-063-03, the National Natural Science Foundation of China(No.50975205), Key Technology Support Program of Tianjin China(No.12ZCZDGX00600), and Tianjin Key Subject for Materials Physics and Chemistry.
Online since: October 2011
Authors: Jian Jun Wang, Xue Kui Wang, Zuo Liang Sha
Avenue, Tianjin Economic and Technological Development Area (TEDA), 300457
2Tianjin Key Laboratory of Marine Resouces and Chemistry, Tianjin University of Science and Technology, No. 29, 13th.
The adsorption and location behaviours can be attributed to the emulsion nature and a chemical structure of demulsifier combined both a polar and a non-polar group into a single molecule.
The adsorption and location behaviours can be attributed to the emulsion nature and a chemical structure of demulsifier combined both a polar and a non-polar group into a single molecule.
Online since: January 2005
Authors: C.-S. Chi, H.J. Oh, Y. Jeong, Su Jeong Suh, J.H. Lee
Chi5, a
1
Dept. of Materials Science, Hanseo University, Seosan, 352-820, korea
2
Dept. of Chemistry, Hanseo University, Seosan, 352-820, korea
3
Korea Institute of Machinery and Materials, Changwon, 641-010, Korea
4
School of Metallurgical and Materials Engineering, Sungkyunkwan University, Suwon, 440-746,
Korea
5
School of Advanced Materials Engineering, Kookmin University, Seoul, 136-702, Korea
a
cschi@kookmin.ac.kr
Keywords: anodizing, anodic nanopore arrangement, oxalic acid, domain size.
In order to investigate the effect of electrolyte temperature on the self-organized cell structure in anodic alumina, the anodizations were performed via 2-step anodizing in electrolyte at 17°C and 2°C.
In order to investigate the effect of electrolyte temperature on the self-organized cell structure in anodic alumina, the anodizations were performed via 2-step anodizing in electrolyte at 17°C and 2°C.
Online since: August 2010
Authors: Jin Cheng, Xiao Ping Zou, Hong Ying Feng, Zhe Sun, Yuan Yang, Cui Liu Wei, Xue Ming Lü, Gang Qiang Yang, Zhao Xian Yu
Introduction
Carbon nanotubes (CNTs) have widely potential application in physics, chemistry and material
science owing to their remarkable properties [1,2], such as high Young's modulus, strong strain,
aspect ratio and high conductivity.
It clearly shows tubular structure with thin inner diameter and thick wall, which indicates that the deposits are CNTs.
It clearly shows tubular structure with thin inner diameter and thick wall, which indicates that the deposits are CNTs.
Online since: December 2012
Authors: Li Wang, Chun Mei Li, Xiao Song Li, Li Jie Wang
Department of Chemistry, Harbin Institute of Technology, Harbin 150001, China
aliwanghit@126.com,blixiaosongabc@126.com
Key words: Electrochemical oxidation, Activated sludge, Cell lysis, VSS
Abstract.
The sludge reduction by electrochemical oxidation is based on the strong oxidation • OH group by electrochemical process, which destroys sludge flocculent structure, oxidizes sludge cell polymers and dissolve sludge, which resulted in sludge reduction [8].
The sludge reduction by electrochemical oxidation is based on the strong oxidation • OH group by electrochemical process, which destroys sludge flocculent structure, oxidizes sludge cell polymers and dissolve sludge, which resulted in sludge reduction [8].
Online since: October 2011
Authors: Ji Min Xie, Hui Ru Qin, Jun Jie Jing, Wen Hua Li, Zhi Feng Jiang
Preparation and characterization of nickel nanopowder for conductive pastes
Huiru Qin 1, a, Jimin Xie1, b, Junjie Jing1, c, Wenhua Li1, d and Zhifeng Jiang1, e
1School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P.
The phase purity and crystal structure of the obtained samples were examined by X-ray diffraction (XRD) using D8 advance X-ray diffraction (Bruker axs company, Germany) equipped with Cu Ka radiation (l= 1.5406 Å), employing a scanning rateof 0.02◦s−1 in the 2θ range from10◦to 80◦.The morphologies of the products were observed using field emission scanning electron micrographs (FESEM) and transmission electron microscopy (TEM).
The phase purity and crystal structure of the obtained samples were examined by X-ray diffraction (XRD) using D8 advance X-ray diffraction (Bruker axs company, Germany) equipped with Cu Ka radiation (l= 1.5406 Å), employing a scanning rateof 0.02◦s−1 in the 2θ range from10◦to 80◦.The morphologies of the products were observed using field emission scanning electron micrographs (FESEM) and transmission electron microscopy (TEM).
Online since: November 2011
Authors: Xue Mei Sang, Zhi Feng Tian, Yun Mei Tang, Hong Li Shang
Electrochemical Synthesis of Ferrate using Iron with 3.3% Si Anode
Hongli Shang a, Xuemei Sang b, Zhifeng Tianc, and Yunmei Tang d
Institute of Chemistry and Chemical Engineering,
Chongqing University of technology, Chongqing 400054, China
a20060008@cqut.edu.cn, b sunny2003cqu2003@sina.com.cn,
ccquzhft@sohu.com, d1632256995@qq.com
Keywords: ferrate, electrochemical synthesis, cyclic voltammetry, current yield
Abstract.
It does seem that the properties of passivating film on iron are very sensitive to both temperature and current density and that ferrate is only formed when the thickness, composition and or structure fall within a narrow range.
It does seem that the properties of passivating film on iron are very sensitive to both temperature and current density and that ferrate is only formed when the thickness, composition and or structure fall within a narrow range.