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Online since: June 2011
Authors: Dan Dan Zhao, Zhi Yang, Hao Wei, Ya Fei Zhang
Controlled growth and supercapacitive behaviors of CVD carbon nanotube arrays Dandan Zhao 1, 2, a, Zhi Yang 1, b, *, Hao Wei 1, c and Yafei Zhang 1, d, * 1Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, National Key Laboratory of Nano/Micro Fabrication Technology, Research Institute of Micro/Nanometer Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, China 2Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China azhaodancn76@yahoo.com.cn, bzhiyang@sjtu.edu.cn, chaowei@sjtu.edu.cn, dyfzhang@sjtu.edu.cn Key words: Carbon nanotube arrays; Chemical vapor deposition; Controlled growth; Supercapacitor.
While many researchers use bulk quantity CNT powder or composite as electrode materials for supercapacitors [2,4,6], significant interest has been generated in CNT arrays and its composites because of their excellent physicochemical properties and interesting aligned structure, which are desirable for the penetration of electrolytes and reactants into the whole electrode matrix [12–17].
For the typical as-grown CNTs correspond to the catalyst film thickness of 30 nm, the continuous hollow tube structure is readily seen even in low magnification TEM image (Fig. 2a).
Online since: July 2012
Authors: Dan Dan Yuan, Yong Gang Xie, Hong Jun Wu
Research on Influences of Waters Along Sino-Russian Oil Pipeline Affected by Unexpected Environmental Disasters YUAN Dandan1,2,a, XIE Yonggang3, WU Hongjun1,2 1Provincial Key Laboratory of Oil &Gas Chemical Technology, Northeast Petroleum University, Daqing, China; 2College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing, China; 3Institute of productivity, Heilongjiang University, Harbin, China a yuandandan@163.com Keywords: Environmental disasters; influences on waters; Oil pipeline; Sino-Russian borders Abstract.
(5)Operations of the pipelines construction, to some extent, have changed the structure of the rock and soil and vegetation conditions along the pipeline, which may lead to the development of water and soil erosion.
The soil structure is a loose, and is susceptible to erosion.
(3)Emergency measures in response to these consequences to deal with these emergent situations should be made,which shoud include engineering, Non-engineering and emergency management measures Introduction of the author: Yuan Dandan is a lecture in Provincial Key Laboratory of Oil &Gas Chemical Technology of the College of Chemistry & Chemical Engineering at the University of Northeast Petroleum.
Online since: October 2014
Authors: Li Hua Zhu, Xiao Jing Xu, Xiao Ya Niu, Ting Zhuo Chen, Min Liu
However, as a type of bone substitute materials, TiNi alloy, whose surface nature and structure are too different from the bone tissue’s ,can’t form a chemical bone integration with bones, that is, no function in bone conduction and bone integration, which has a serious impediment to the promotion of titanium in the field of bone substitute.
Micro-arc oxidation has successfully been utilized to produce ceramic coatings [8] under the combination of thermal chemistry, plasma chemistry and electrochemistry with A1, Ti, Mg and other valve metals placed in an aqueous electrolyte solution, and electrochemically generating spark discharge spots on the surface of the materials.
Solutions able to reproduce in vivo surface-structure changes in bioactive glass-ceramic A-W [J].
Online since: February 2015
Authors: Yuri Morgalev, Sergey Yu. Morgalev, Tamara G. Morgaleva, Irina A. Gosteva
Introduction Nanoparticle (NP) contacting aquatic medium upon their entry into ecosystem leads to complex physicochemical rearrangements of structure of dispersed systems (DS) of which one of the most important characteristics is aggregation with a subsequent sedimentation or floatation elimination of NP from the habitat of aquatics into bottom deposits or water surface.
Among many factors critical are chemical composition and NP structure.
Zimon, Colloid chemistry, Аgar, Мoscow, 2003
Wang, Physical chemistry: principles and applications in biological sciences, Technosphere, Мoscow, 2005
Online since: January 2013
Authors: Qiang Zhou
The theoretical basis mainly studies the connotation, structure and objective of the scientific and technological system of promoting sustainable development of coal industry.
The functional characteristic of its structure is that it can achieve the goal of the sustainable development of coal industry [2].
This research direction also involves many disciplines, including coal chemistry, analytical chemistry, ceramics, cement technology, brick-making technology, associated minerals of coal mines, mineral separation and processing, etc.
Online since: August 2013
Authors: Qing Xi Cao, Hui Liu, Shao Hua Wu, Wen Yan Wu, Sui Ying Yu, Zhen Zhong Li, Chun Hui Yang
The interactions between chemistry and turbulence were modeled using the eddy dissipation concept (EDC) [17].
It can be see from Fig. 3 that the reducing agent injected from the injection lances in zone 4# nearby the arch nose structure can reduce NO well, while the reducing agent injected in zone 1# (below 55 m) does not work well in reducing NO, and even appears positive reaction of NO, which shows the reducing agent is oxidized to NO.
In: On the Structure of Turbulence and a Generalized Eddy Dissipation Concept for Chemical Reaction in Turbulent Flow. 19th AIAA Meeting, St.
Strutz: Journal of Industrial and Engineering Chemistry Research, Vol. 42 ( 2003), p. 2093
Online since: February 2007
Authors: Qing Li Ren, Qiang Luo, Wei Chen
Hydroxyl (OH ) piles up and constructs the concentrated double-deck where Mg 2+ and Al3+ are distributed in the octahedral structure space randomly.
According to the definition of the completely precipitation in the quail- tative analysis of the chemistry, the completely precipitation is the condition that the concentration of the residual ion is less than 10-5mol/L.
And it is the nucleation speed rate and its growing speeding rate that decide the structure and the character of the precipitation particle.
Guangxi Chemistry Industry (in Chinese) Vol.28 (1999), pp.29
Online since: August 2004
Authors: Bo Jönsson, Peter Henning, Roger Berglund, Jonas Magnusson, Mats Hättestrand
The drawback of conventionally produced Fe 21Cr 5,5Al materials is the relatively low mechanical strength that the ferritic structure offers at high temperature.
The transport properties and over all oxide growth rate is however a result of many parameters including details in the chemistry of the alloy and the surface chemistry of the oxide [5,6,7].
A fine-grained recrystallised structure is maintained for long times at high temperatures without significant grain growth.
Online since: April 2019
Authors: Bao Ying Lu, Xu He Hou
In Situ Rapid Dechlorination by Microwave-Assisted Catalytic Reduction of Chlorobenzene and 1,4-Dichlorobenzene on Raney Ni-Al Alloy Catalyst Baoying Lu1,a, and Xuhe Hou1,a* 1Guangxi University of Science and Technology, Chemistry Department, 545000, Liuzhou, China a*Corresponding author: 100000778@gxust.edu.cn Keywords: Microwave-assisted catalytic reductive, Dechlorination, Raney Ni-Al alloy catalyst Abstract.
Moreover, Raney Ni skeleton structure can be obtained, which improves the efficiency of catalysis for rapid dechlorination reaction.
The dechlorination experiments were carried out on the microwave digestion system (MDS-6, 400W, Sineo Microwave Chemistry Technology Co., LTD, China).
The surface area of Raney Ni-Al alloy could not be measured because it was not in porous structure.
Online since: June 2017
Authors: Xing Fa Ma, Li Ping Li, Xin Tao Zhang, Jian Xun Qiu, Shi Sheng Lv, Ming Jun Gao, Xiao Chun He, Guang Li
Introduction Since the carbon nanotube (CNTs) was discovered, nano/micro-structured carbon materials have obtained more and more attention because their unique physical and chemical properties provide various potential applications.
Morphology observation and structure characterization.
The nanocomposite prepared suspension was casted on the interdigital electrodes of Au on flexible PET substrate, after drying, the photoconductivity response to visible light (20-25 W) and 808 nm laser with low-power were determined with LK2000A Electrochemical Work Station from LANLIKE Chemistry and Electron High Technology Co., Ltd (China).
Pan, Molecularly imprinted calixarene fiber for solid-phase microextraction of four organophosphorous pesticides in fruits, Food Chemistry. 192 (2016) 260-267