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The Facile Hydrothermal Preparation Of Wo3 And Its Photocatalytic Performance Under Visible-Light Irradiation Fenfen Li1, a, Hongtao Gao1, b, Guangjun Liu*2, c 1Key Laboratory of Eco-chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, P.
China 2Department of Chemistry and Chemical Engineering, Jining University, Jining, 273155, P.
Results and discussion XRD analysis XRD was used to investigate the phase and crystal structure of the products.
No characteristic peaks for any other phases or impurities are observed, suggesting that the nanocrystal is composed of orthorhombic structure.
UV-vis DRS analysis The energy band structure has an influence on optical absorption property of a semiconductor.

Preparation of Cellulose-graft Water Retaining Agent: Effect of Reaction Temperature and Initiator Zongcheng Miao1,a, Fang Wang2,b, Deng Deng3,c, Yongming Zhang1,d, Lei Wang4,e*, Zhongjin Li4,f* 1Xijing University, Xi’an, Shaanxi Province, 710123, China 2Department of Chemistry, Shaanxi Institute of Education, Xi’an, Shaanxi Province, 710061, China 3Xi'an Modern Chemical Institute, Xi'an, Shaanxi Province, 710065, China 4Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry，Ministry of Education.
However when the temperature was too high, a lot of monomer groups would graft to the main chain and led to a close network structure, which made it difficult for water to come in.
More graft polymerization that occurred between the monomers and the cellulose led to the formation of more stable network structures, which was helpful to the increase of the water absorbency.
According to the Fig. 3, the absorption was observed at 3422 cm-1 (hydroxyl stretch influenced by hydrogen bond), 2957 cm-1 (methylene), 1405 cm-1 (carbonyl stretch) and 1068 cm-1 (b-1,4-glycosidic bond), which were characteristic absorptions in cellulose structures.
From the above FTIR information, it can be concluded that the polymer structure of WRA was formed during the reaction.

Experimental Study on Unsupported Nano-MoS2 Catalyst for Deep Desulfurization Fuel Oil Yuqin ZHU School of Chemistry & Chemical Engineering, Xian Shiyou University, Xian, China zhuyq@xsyu.edu.cn Keywords: Unsupported MoS2 Catalyst; Hydrotreating Desulfurization; Hydrothermal Reduction.
The structure of MoS2-A is amorphous (Fig.1a~1c), its average diameter is 13 nm, and a small quantity of MoS2-A appears in the form of nanowire stack crystal (Fig.1d).
Effects of concentration of reactants and pH values on MoS2 structure Fig.3a-3b are the TEM images of MoS2-B.
Therefore, the microcrystal structure could be controlled by changing the concentrations of reactants and pH values. 3a 3b Fig.3a-3b The TEM images of MoS2-B Conclusions The microcrystal nanowire stack MoS2 was synthesized with equably and high dispersion by hydrothermal deoxidization.
Physical Chemistry B:106(2002),p.1913

Synthesis and Characterization of Pt-Sn/WC(O)/C Catalyst for ethanol Electro-oxidation Aijuan Zhu, Youqun Chu, Chunan Ma*, Zhaoyang Chen State Key Laboratory Breeding Base for Green Chemistry Synthesis Technology, International Sci. & Tech.
The incorporation of Sn changes the electronic structure of Pt, promoting the breakage of C-C bond [4, 5].
The different synthetic methods result in different structure, dispersion and degree of alloying and influence the final catalytic performance.
The lattice parameter of Pt will extend for the incorporation of Sn atoms into the fcc structure of Pt.
Datta: Materials Chemistry and Physics, Vol. 116 (2009) No.1, p.223

Hydrogen Bonding Interaction between a Series of Bolaform Schiff Bases with Barbituric Acid by Spectra and HPLC Tifeng Jiao1,2, Qi Tong1 and Jian Liu1 1Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei, 066004, China 2College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou, 325027, China Keywords: Hydrogen bonding, Schiff base, Barbituric acid, Bolaamphiphile, Liquid chromatography Abstract.
The introduction of the different hydrophobic spacers into the present Schiff bases can lead to more flexible structures and new properties are expected.
The molecular structures and the abbreviations are shown in Fig. 1.
Chemical structures of the series of Schiff base molecules.
Schematic illustration of possible structures of SCn/BA complexes.

Optically Encoded Smart Dust from DBR Porous Silicon Bong-Ju Lee1,a, Sung Gi Kim 2,b and Honglae Sohn2,* 1 Department of Physics, Chosun University, 375 Seosuk-dong, Gwangju 501-759, Korea 2 Department of Chemistry, Chosun University, 375 Seosuk-dong, Gwangju 501-759, Korea a bjlee@chosun.ac.kr, bsgkim@chosun.ac.kr,* Corresponding author: hsohn@chosun.ac.kr Keywords: DBR Porous Silicon, Smart Dust, Chemical Sensor, Reflectivity, Red-shift.
Porous silicon is very attractive material for this reason because of its high surface area, convenient surface chemistry, and optical signal transduction capability.[1-3] The high surface area and unique optical properties of porous silicon have been investigated for a variety of chemical and biological sensing applications.[4,5] Electrochemical etch of single crystalline silicon can easily control the pore morphology, thickness, and porosity by appropriate adjustment of the preparation conditions.[6] In addition, chemical modification of porous silicon exhibits the modification of its physical, chemical, and electronic properties.[7,8] Rugate structured porous silicon having photonic structure of Rugate filter in which refractive index varies sinusoidally has been recently developed by applying a computer-generated pseudo-sinusoidal current waveform.[9-13] Chemical or bio molecule can be detected based on changes in the spectral interference pattern.[14-15] Distributed
Here we have prepared encoded particles having Bragg photonic structure by a galvanostatic anodic etch of crystalline silicon wafer.
�Photonic structure of DBR PSi (multilayer stacks) result in a mirror with high reflectivity in a narrow spectral region.
The Bragg structured particles were immobilized on a glass plate.

This might indicate that the crystal structure of cotton is transformed from cellulose I to cellulose II.
The crystal structure of original cotton and regenerated cellulose films is shown in Fig. 4.
The results illustrated that after dissolution and regeneration, the crystal structure of cotton was transformed from cellulose I to cellulose II [10, 11].
Regenerated cellulose film showed a little more weight loss in this section, which might be due to the fact that the crystal structure of sample changed from cellulose I to cellulose II after regeneration and water absorbed in cellulose II crystal structure is easier to lose compared to I.
Perez, Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry Vol.37 (1981), p1858

The Effect on Dynamic properties of Reactive Powder Concrete under high Temperature Burnt and its Micro-structure analysis B.
From SEM analysis: the inner part of RPC will have a series of physical chemistry changing, such as: micro-crack generation, C-S-H gel damage.
SEM was utilized to study the micro-structure of RPC under high temperature burnt and finally a connection between structure micro-structure and mechanical behavior is discussed.
While after 400℃ and 800℃ burnt, the micro-structure become loose, some cracks grow inside cement; the initial continuous phases become disperse phase because structure lost water.
These changes damage the structure more serious after 800℃ burnt, so it has low dynamic compression strength.

Characterization and Preparation of Well-dispersed TiO2 Nanoparticles by Ultrasonic Microemulsion Method Bingying Jiang1,a, Famei Feng2,b, Ci Li1,c, Min Wang1,d and Jiaqing Xie1,e * 1 College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, P.
R. of China 2 College of Chemistry & Pharmaceutical Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan, P.
Introduction As is well known, metal oxide particles are widely used in various applications such as electronics, optics, industrial ceramics, biochemistry and pharmaceutical industry owing to their novel structures and the corresponding unique properties.
Therefore, the studies of the preparations, structures, properties and applications of these metal oxide nanoparticles have gained much attention in the world [1-5].
From characteristic peaks in this XRD image, TiO2 can be indexed as structure of the rutile model.

Actually, soft chemistry procedures seem to have an enormous potential to render new tubular structures.
For that purpose the use of templates has been required being in most of the cases associated to wet chemistry methods.
Chem. 10, 2570 (2000)) reproduced by permission of the Royal Society of Chemistry.
Chem. 19, 1037 (2009)) Reproduced by permission of the Royal Society of Chemistry.
Among the most recent discoveries CNTs (1) have supposed a great revolution on the carbon chemistry development and, in general, in materials chemistry due to their unique physical and chemical features.