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Kutty1, c, Olaf Timpe2, d, Malte Behrens2, e, Sharifah Bee Abd Hamid1,f 1COMBICAT Laboratory, Nanotechnology & Catalysis Research Centre (NANOCEN), University of Malaya, Lembah Pantai, Kuala Lumpur 50603, Malaysia 2 Inorganic Chemistry Department, Fritz Haber Institute of the Max Planck Society, 14195 Berlin, Germany.
Therefore, we believe that the pre-treatment of N2 gas prior storage is able to chemically stabilize the crystal structure of covellite from oxidation process.
It can be observed that highly agglomerated structure which is built by many hexagonal nanoplates was formed.
Therefore, this analysis has again implied that the pre-treatment of N2 gas provides a protective layer to copper sulfide which chemically stabilizes its crystal structure that prone to oxidation.

Preparation of Fly ash/nano-ZnO Composite And Its Adsorption Properties For Reactive Dyes From Aqueous Solution Beigang Lia, Qianlong Hub , Zhiyan Fuc and Chen Wangd Chemistry & Environment Science College, Inner Mongolia Normal University, Hohhot 010022, Peoples R China alibg@imnu.edu.cn, b695523756@qq.com, c380962193@qq.com, dachensweet0929@qq.com Keywords: Fly ash; nanosized zinc oxide; preparation; adsorption; reactive dyes.
FA, as the adsorption material for water treatment, has a great advantage and development potential due to its porous structure, large specific surface area and active components such as SiO2, Al2O3, Fe2O3, etc, but must be modified and activated in order to obtain the stronger adsorption performance.
This might be because the crystallization of a nano-ZnO was not enough in case of short calcining time spans, on the other hand, the thermal activation of fly ash was not enough due to the incomplete removal of crystalline water and structure water, too.
This shows that the grain sizes grow up constantly, but nano-ZnO does not change the crystalline structure of FA in the composite.

Introduction Absorbent polymer is a material with three-dimensional cross-linked structure that has better water absorbency and retention properties.
Characterization The structure of the sample was determinate by FT-IR(Fig.1).
When the cross-linking degree was low, the polymer cannot form a three-dimensional network structure, and the polymer showed the evident tendency of dissolving and didn’t latch-up liquid.
References [1] Jingjing Li, Ganshuan Bai: Science of Soil and Water Conservation (in Chinese), Vol.10 (2012), p. 114-120 [2] Chunlin Gou, Xinai Wang, Yongsheng Li: Scientia Agricultura Sinica (in Chinese), Vol.19 (2011), p. 4015-4021 [3] Junping Zhang: Carbohydrate polymers, Vol.68 (2007), p. 367-374 [4] Liying Zhang, Chaodong Liao, Zhanhe Yin: Applied Chemical Industry (in Chinese), Vol.38, No.2(2009), p. 282-285 [5] Gui Peng, Shimei Xu, Yang Peng: Bioresource Technology, Vol.99 (2008), p. 444-447 [6] Jianxin Yue, Guohua Wen, Lili Wang, Guoqiang Sun: Chinese Journal of Colloid & polymer, Vol.22 (2004), p. 17-19 [7] Lan Wu, Mingzhu Liu: Polymer Materials and Engineering (in Chinese), Vol.22 (2004), p. 250-253 [8] Junjie Nie, Lijin Wang, Huan Zhou: Rock and Mineral Analysis (in Chinese), Vol.28 (2009), p. 69-71 [9] Pourjavadi A, Ayyari M, Amini-Fazl M S: European Polymer Journal, Vol.44 (2008), p. 1209-1216 [10] Yuhua Yang, Hongjian Ji, Zhenyuan Pan: Applied Chemistry (in Chinese

Absorption behavior of a modified cellulose hydrogel for both fluoride and arsenic Lingdie Meng1,2,a, Min Wu1,b, Ye Tian1, Shigenori Kuga3 and Yong Huang1,c 1 Technical Institute of Physics and Chemistry, CAS 29 Zhongguancun East Road, Beijing, 100190, China 2 University of Chinese Academy of Sciences, Beijing, 100039, China 3 Department of Biomaterials Science Graduate School of Agricultural and Life Sciences, The University of Tokyo Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan ahdmld11@126.com, bwumin@mail.ipc.ac.cn, cyhuang@mail.ipc.ac.cn Keywords: Cellulose Hydrogel, Fluoride, Arsenic, Adsorption, Water Treatment Abstract.
In this work, cellulose hydrogel with the porous structure and relatively large specific surface area [10] was used instead of the native cellulose fibers as an effective absorbent to remove F-, As (III) and As (V) from aqueous solutions.
The SEM image (Fig. 1) shows homogeneous porous structure with a mesh network pattern.
This cellulose hydrogel is low-cost, widely available, environmental-friendly, which could be easy for post processing being film structure.

Depending on these conditions, the surfaces of crystalline solids show a variety of as diverse structures as spiral hillocks, depressions and cracks formed as a result of growth, dissolution and mechanical deformation, respectively.
These diverse structures are given the general name of surface morphology, surface micromorphology or surface microtopography of crystals.
Emphasis has been laid on tracing the origin of a surface structure in terms of current theoretical background.
Finally, libraries of the authors express the faculties of their gratefulness to the staffs of the geology, physics and chemistry of the University of Barcelona for their assistance with the literature, and to Drs S.

Characterization of Different Hydroxyapatite Particles for Tooth Enamel Remineralization Vita Zalite1, a, Janis Locs1 Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University, Pulka street 3, Riga, Latvia avita.zalite@rtu.lv Keywords: calcium deficient hydroxyapatite, particle size, specific surface area, crystallinity Abstract.
Fig. 3 FTIR spectra of calcium phosphates: A – CDHAp powders, B – powder after sintering at 1150ºC for 2h The functional groups present in the molecular structure of unsintered samples are summarized in Table 1.
In addition, adsorption peak at 879 cm-1 indicated [HPO4] group in the structure, thus confirming CDHAp obtained after synthesis, which is in an agreement with XRD data.
SSA and average particle size (dBET) of spCDHAp and lyoCDHAp samples SSA [m2/g] dBET [nm] lyoCDHAp 112.8 18.9 spCDHAp 104.2 20.5 The results of SSA revealed that there is no significant impact of chosen drying process on the resulting SSA and particles size of powders, because there were no differences in crystallinity, phase composition and molecular structure among the samples.

Deposition and Characterization of Nanocrystalline Al2O3 Thin Films by DC Reactive Magnetron Sputtering S.Prasanna1a, P.Biji2b, G.Mohan Rao3c, M.D.Kannan1d and S.Jayakumar1e 1a,d,eDepartment of Physics, PSG College of Technology, Coimbatore-641 004, India 2bDepartment of Chemistry, PSG Institute of Advanced Studies, Coimbatore – 641 004, India 3cDepartment of Instrumentation, Indian Institute of Science (IISc), Bangalore -560 012, India aprasli79@gmail.com, bbijuja123@yahoo.co.in ,cgmrao2001@yahoo.com, dmdkannan@yahoo.com,es_jayakumar_99@yahoo.com Keywords: Al2O3 thin films, DC reactive magnetron sputtering Abstract: Alumina (Al2O3) thin films were deposited over glass and Si <100> substrates by DC reactive magnetron sputtering at an oxygen partial pressure of 0.03 Pa.
The objective of the present work is to deposit Al2O3 thin films using DC reactive magnetron sputtering at room temperature onto well-cleaned glass and Si <100> substrates by varying the sputtering power and to study its composition, structure and surface topography.
The structure of the films was determined using a Shimadzu X-ray diffractometer operating in the 2q mode with Cu Kα radiation (λ=0.15406 nm) and a fixed incidence angle of 4.5o.
The results show that a slight increase in the sputtering power has a profound impact in the structure and surface topography of the films.

One-pot synthesis of mesoporous MCM-41 with different functionalization levels and their adsorption abilities to phosphate Weiya Huang1,2,3,a, Jun Yang1,b and Yuanming Zhang1*,c (1Department of Chemistry, Jinan University, Guangzhou 510632; 2Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510460, China; 3Department of Materials Science and Engineering, Taizhou University, Linhai 317000;) ahweiya@126.com, btyangj@126.com, ctzhangym@jnu.edu.cn Keywords: one-pot method, functionalization, MCM-41, phosphate, adsorption.
X–ray powder diffraction patters of the samples were recorded in the 2θ range of 0.6–6◦ with a scan speed of 1◦/min by using Bruker D8 Advance diffractometer.The pore structures distribution and BET specific area of the samples were measured on ASAP 2010 Analyzer, and the TGA were performed with Perkin Elmer TGA system to determine the amount of organsilane moieties present on MCM-41-NN-Fe-30%.
Structure characteristics of the samples Samples BET surface area (m2/g) Pore diameter (nm) Total pore volume (cm3/g) MCM-41 737 2.87 0.66 MCM-41-NN-Fe-10% 501 2.74 0.34 MCM-41-NN-Fe-20% 275 2.68 0.21 MCM-41-NN-Fe-30% 171 2.62 0.14 Phosphate adsorption studies.
The surface and structure properties were conducted by XRD, BET, TGA, and elemental analysis.

This allows for investigation of the structure and function of the cell [1].
Lee et al discovered a technique to uncoil the DNA strands and a precise structure could be formed according to the designed mask patterns [5].
A flowing speed of 0.1 mm/s was induced for comparison with the simulation results of the “two-phase fluid structure” modeling and “moving mesh/boundary” methods.
Lee, Micronozzle Array Enhanced Sandwich Electroporation of Embryonic Stem Cells, Analytical Chemistry, Vol. 82, No. 1,pp, 353-358, January 1, 2010

Identification and Assessment Methods of Natural Sodium Bentonite The identification and assessment of bentonite materials includes determining bentonite and sodium bentonite, confirming sodium modification agent and organics with special structure and performances.
Sodium montmorillonite has an endothermic peak at 132°C, releasing interlayer water with weight loss; about 682°C there is an endothermic peak, dehydrating structure of water with weight loss and lattice damaged; at 910°C, there is an endothermic peak, the dehydration substance recrystallized.
At 140°C and 206°C, calcium montmorillonite released interlayer water at different phases; at 690°C, there is an endothermic peak, calcium montmorillonite dehydrating structure of water with crystal grains damaged; at 915°C, there is also endothermic peak, dehydrated substance car into stem Qing Shi, enstatite and quartz [10].
Lu: Chemistry Handbook Volume VIII Thermal Analysis (Second ed.).