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CeO2/CuO catalysts with Na2CO3 as precipitant for preferential oxidation of CO Shanghong Zeng, Tianjia Chen, Haiquan Su*, Quan Man, Wenli Zhang Shanghongzeng001@163.com chentianjiaiwj@163.com haiquansu@yahoo.com School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China Key words: CeO2/CuO; precipitant; hydrogen; preferential CO oxidation Abstract: The CeO2/CuO catalysts were synthesized by the hydrothermal method.
In this work, the CeO2/CuO catalysts were prepared by the hydrothermal method and the multi-technique characterizations were employed in order to further investigate the effect of composition and structure on catalytic performance.
It is obvious that CuO exists in monoclinic phase and CeO2 presents the characteristic peaks of fluorite-type oxide structure.
Table 1 lists molar ratio, structure and textural properties of the catalysts.
The CeO2/CuO-B catalyst presents better catalytic activity at higher temperature in compared with the other catalysts, and it is related to its structure.

The crystal structure for II-VI compounds generally crystallize in cubic or hexagonal structure.
All the samples exhibit a polycrystalline hexagonal structure.
[7] M.Wang, J.Wang, W.Chen, Y.Cui, L.Wang Effect of preheating and annealing temperature on quality characteristics of ZnO thin films prepared by sol-gel method, Materials Chemistry and Physics 97 (2006) 219-225
Synthesis, structure and optical properties of zinc oxide hexagonal microprisms.

Effect of Sonication Time and Calcination Temperature on Physical Properties of Titanium Dioxide Synthesized via Sonochemical-assisted Process Chokchai Kahattha1,2,3,a, Naratip Vittayakorn1,2,3,b and Wisanu Pecharapa1,2,3,c 1 College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang (KMITL), Bangkok 10520, Thailand 2 Thailand and Center of Excellence in Physics (ThEP Center),CHE,328 Siayuthtaya RD, Bangkok 10400,Thailand 3 Department of Chemistry, King Mongkut’s Institute of Technology Ladkrabang(KMITL), Bangkok 10520, Thailand akahattha@gmail.com, bnaratipcmu@yahoo.com, ckpewisan@gmail.com Keywords: Sonochemical, TiO2, Snatase Abstract.
The crystal structure and phase identification of the samples were investigated by X-ray diffraction with a monochromatic source of Cu Kα (λ=0.15405 nm) and Raman spectroscopy (Thermo Scientific DXR Raman Microscope with 532 nm DPSS laser).
When the sonication time rise to 30 min, the sample shows prominent diffraction peaks situated at 2q = 25.3º, 37.8º, 48.1º, 55.2º, 62.8º, 70.5º and 75.2º, which correspond to (101), (004), (200), (211), (204), (220) and (215) orientation plane with tetragonal structure of anatase phase (JCPDS File No. 89-4921), respectively.
It clearly seen that the fine TiO2 nanoparticles have a quasi-spherical structure with diameter 20-30 nm and show the polycrystalline structure after calcined at 500 °C.

Pluronic-PEI Micelles Reverse Multidrug Resistance by Depleting ATP and Inhibiting P-Glycoprotein for Colon Cancer Therapy Hebin Wang1,2,a, Yang Li 1, Kaihang Liu 1, Jun Zhou 1 and Guping Tang 1,b* 1 Department of Chemistry, Zhejiang University, Hangzhou 310028, China 2 College of life Sciences, Tarim University, Alar 843300, China a email: wanghebin329@163.com b* email: tangguping@zju.edu.cn Keywords: Pluronic; ATP; P-glycoprotein; Multidrug resistance; Drug delivery Abstract: We have designed a polymer micelles based on Pluronic P123 and Polyethyleneimine 600 (termed as P123P600).
Of various functional vehicles developed so far, Pluronic® family, a series of triblock copolymers arranged in PEO-PPO-PEO structure, are of particular interest for the reversal of MDR owing to their ability to sensitize MDR cancer cells.
From 1HNMR integration analysis, these results suggested that the proposed structure was synthesized successfully (Fig. 1B).
The morphology of the P123P600 was characterized by transmission electron microscopy (TEM), indicate that the P123P600 is able to self-assemble into spherical micelles due to its amphiphilic nature, the spherical structures were observed approximately 140 nm in diameter (Fig. 2A, B).
Structure-Invertible Nanoparticles for Triggered Co-Delivery of Nucleic Acids and Hydrophobic Drugs for Combination Cancer Therapy.

In order to improve the machinability of this ceramic materials, one metrod is to introduce another weak interphase or layered structure material into the matrix to facilitate crack deflection during machining[3].
With the temperature was increased to 200°C, hexagonal and monoclinic CePO4 with diameters 5-50nm and lengths exceeding several micrometers form a clear shelf structure, but ZrO2 particles distribute in between CePO4 particles.
The formed rob-like coating before calcination became more thiner, and some CePO4 with layered structure agglomerated on the surface of ZrO2 particles due to the heat treatment.
It is well known that the hexagonal crystal structure, such as ZnO and CdSe, often shows the anisotropic growth along the [001] direction[9,10].
The zeta-potential of the CePO4 coated ZrO2 was similar to that of CePO4, which confirmed that CePO4 formed a surface layer on the ZrO2 particles and altered the surface chemistry of the ZrO2.

Igarashi 3 and Liancheng Zhao 1 1 School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China 2 Department of Applied Chemistry, Harbin Institute of Technology Harbin 150001, China 3 Department of Life and Environmental Science, Chiba Institute of Technology, Chiba 275-0016, Japan Keywords: Titanium, Microarc oxidation, Oxide film, Hydroxyapatite Abstract.
The hydroxyapatite coating, however, gives rise to problems including composition and structure control, tightly bonding to the substrate [7].
The structures of oxide films were analyzed with X-ray diffraction (XRD) with CuKα radiation 40kV 200mA at a scanning speed of 4°/min, and with the scanning range (2θ) from 10° to 60°.
It was found that the surface of the oxide film was covered with needle-like crystals and that rough and porous structures of surfaces retained.
TiO2 and a TiO2 single crystal, or SiO2 gel and quartz are chemically the same materials, but they have quite different crystal structures.

Hydrothermal synthesis and electrocatalytic property for H2O2 reduction of Co3O4 nanocubes Zhi Ai Yang 1, a, Li Jin Feng 1, b, Xia Wang 1, c, Rong Ma1, d, Jian Ping Sun1, e and Xu Chun Song1, f 1Department of Chemistry, Fujian Normal University, Fuzhou 350007, P.
Co3O4 belongs to the spinel crystal structure ,based on a cubic closely-packed structure of oxide ions and has attracted extra attention, owing to their broad range of applications such as gas sensing, catalysts, and magnetic storage devices[4,5].
Cao et al. have obtained spinel structure Co3O4 nanoparticles with an average diameter about 17 nm and regarded as electrocatalysts for H2O2 reduction.
All the diffraction peaks such as (111), (220), (321), (222), (400), (422), (511), (440) in Figure 1 can be readily indexed to the cubic spinel structure Co3O4 with the lattice parameters a=8.076Å.

There are 17 RE elements in chemistry periodic table and their atomic number are from 57 to 71 (element La ~ Lu) and 21(Sc), 39(Y).
The Principium Analysis in Mechanical Property of RE Carbide By means of SEM, the metallographic structures ofYW1R and YW1 are obtained and shown in Fig.3.
a) YW1 b) YW1R Fig.3 The metallographic structures of YW1 and YW1R[3] Fig.3 shows that the crystallites in hard phases (Ti, W)C and WC of RE carbide are refined and is very compact and homogeneous.
The fcc structure has 12 slip systems, which contributes to increasing the toughness of Co-phase.
These 2 photos indicate that the more transgranular and cleavage fracture occurred in RE carbide tools (YW1R) which has dimple structure in part.

Preparation and Characterization of Anti-Fogging Low Density Polymer Film Song Lee1, Byung Hyun Ahn2, Sun Wha Oh 3, and Young Soo Kang1∗ 1∗Department of Chemistry, Pukyoung National University, 599-1 Daeyeon-3-dong, Nam-gu, Busan, 608-737, Korea 2 School of Material Science and Engineering, Pukyoung National University, Busan, 608-739, Korea 3 Basic Science Research Institute, Pukyoung National University, 599-1 Daeyeon-3-dong, Nam-gu, Busan 608-739, Korea ∗yskang@pknu.ac.kr Keywords: LDPE (low density polyethylene), TFAA (trifluoroacetic acid allyl ester), γ-ray, grafting Abstract.
The chemical structure of LDPE grafted with trifluoroacetic acid allyl ester by γ-ray irradiation was studied with FT-IR.
The grafting of trifluoroacetic acid allyl ester onto LDPE chain necessarily changes its chemical structure.
TGA is used primarily for determining thermal stability of polymer and the structure of grafted LDPE.
The structure of grafted LDPE was studied by FT-IR, TGA and SEM spectra.

Formation of Silkworm-likeVaterite via Orientated Attachment Process Jun Liu1, a, Xiaohong Wang2, b, Qun Zhang1, c and Yebin Guan2 1School of Resources and Environment, Anqing Normal University, Anqing 246011, China 2School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 246011, China aemail: liujunaqtc@126.com, bemail: wangxiaohong@aqtc.edu.cn, cemail: zhangqun@aqtc.edu.cn Keywords: calcium carbonate, vaterite, orientated attachment Abstract.
Herein, mineralization of vaterite crystals with silk-worm like structures has been first reported by an injection-precipitation method in the precense of dimethyl sulfoxide (DMSO).
The silk-worm like particles shown in Figure 3a was further observed by TEM and HRTEM for the fine structure of vaterite.
Vaterite has a hexagonal structure with the space group P63/mmc, and certain similar structure characteristics to calcite [16, 17].