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Given that surface properties such as roughness, free energy, and chemistry are known to influence the long-term clinical success of implants [3, 4], it is therefore essential to tune them.
To overcome this lack of DLC coating adhesion to metallic surfaces, engineering interfacial bonding, adjusting surface chemistry, and tailoring topography by pretreatments have been proposed [6, 9-12].
However, depending on the pretreatment conditions, changes in the structure of the DLC coatings can be observed.
DLC-coated before and after aging in PBS in terms of morphology (SEM images), structure (Raman), roughness and wettability.
On the contrary, shorter CH4 carburizing pretreatment, effective in removing the native oxide layer, also led to a thicker DLC coating with a higher diamond-like structure.

The film structures were observed using SEM, and the surface morphology were characterized by AFM. 3.
It can be observed that porous honeycomb structure with uniformity in pore-diameter and spacing is obtained, and most of the pores are circular or near elliptical.
Consequently, the growing of the film becomes more stable, and the porous structure of the film gets more regular and has a highly ordered array.
References [1] Yanchun Zhao, Miao Chen, Preparation and self-lubrication treatment of ordered porous anodic alumina film, Materials Chemistry and Physics82 (2003) 370-374
Fukuda, Ordered metal nanohole arrays made by a two-step replication of honeycomb structure of anodic alumina, Science 268 (1995) 466-1468.�

College of Chemistry, Chemical Engineering and Materials Science, Zaozhuang University, Zaozhuang 277160, China aqislywt@163.com; bqislycy@163.com Keywords: Nanocomposite; Heterojunction structure; Photocatalysis; Hydrothermal synthesis Abstract: Bi2WO6-WO3heterojunctions were first prepared using hydrothermal method with the assistance of cetyltrimethylammonium bromide (CTAB).
The highest photocatalytic activity of Pt-Bi2WO6-WO3photocatalyst is attributed to the synergistic effect of Pt surface plasmon resonance and Bi2WO6-WO3heterojunction structure.
And the enclosure of the hysteresis loop appeared at P/P0 about 0.45, indicating that the as-synthesized samples were mesoporous structures [15].
It reveals that both powders consist of agglomerates and exhibits sheet-like structure which may be rendered by the effect of CTAB soft template.
It is clear Bi2WO6-WO3 displays higher activity than that of pure Bi2WO6 and WO3, which may be ascribed to the heterojunction structure.

The chemical compositions of specimens Materials Composition [wt%] SO3 CaO SiO2 Al2O3 Fe2O3 MgO FGD gypsum 63.23 34.92 0.67 0.53 0.15 1.35 Obtained alpha-HH 64.73 34.11 0.49 0.42 0.15 0.09 According to the XRD patterns presented in Fig. 1, it is evident that the phase structure changes from calcium sulfate dihydrate's hexagonal structure (DH) (PDF# 96-210-5042) in FGD gypsum to calcium sulfate hemihydrate's monoclinic structure (HH) (PDF# 96-901-2209) in obtained products.
The size of solid particles without CuCl2 and FGD gypsum particles (Fig. 3(a) and 3(b)) was uneven and exhibited flake-like structures.
The lengths and diameters of FGD gypsum to alpha-HH were significantly influenced by varying dosages of CuCl2, leading to minor distortions in the atomic positions of the monoclinic structure.
Adding 0.6 g CuCl2 can noticeably influence the phase structure, particle morphology, and physical and mechanical properties of the resultant plasters.
C., Studies on the preparation of calcium sulphate hemihydrate by an autoclave process, Journal of applied chemistry, 18(10) (1968) 307-312

The structure of graphene oxide is shown in Figure 1.
Fig. 1 Structure schematic of graphene oxide Figure 1 is the structure schematic of graphene oxide.
Figure 8 is the composite membrane structure observed from the electron microscopy.
Composite membrane structure has divided into clear down three: PPy, SG and RGO.
Three-tier structures linked with each other closely and have good organizational structures.

But nitric acid oxidation treatment does not change the bulk structure of carbon fibers.
But the structure parameters of carbon fibers have some differences which are due to the change of the surface structure.
This suggests that the entire structure of carbon fiber disordered with increasing the oxide time.
But nitric acid oxidation treatment does not change the bulk structure of carbon fibers
[5] J.Liua, Y.L.Tian, Y.J.Chen, J.Y.Liang et al.: Materials Chemistry and Physics Vol. 122(2010), p. 548-555

Large Size CH3NH3PbI3 Perovskite Microcrystalline with a Capsule-Free Cavity Box Structure Grown by Solvent Thermal Reaction Fei Han1,a, Xiping Xi1,b*, Min Fan1,c, Lingling Wang2,d, Jinming Shi1,e, Qinliang Jiang1,f, Bohong Chen1,g, Heng Yan1,h 1Institute of Energy Research, Jiangxi Academy of Sciences, Nanchang, China 2Institute of Applied Chemistry, Jiangxi Academy of Sciences, Nanchang, China afei_han@jxas.ac.cn, *bxipingxi@jxas.ac.cn, cmin_fan@jxas.ac.cn, dlinglingwang@jxas.ac.cn, ejinmingshi@jxas.ac.cn, fqinliangjiang@jxas.ac.cn, gbohongchen@jxas.ac.cn, hheng_yan@jxas.ac.cn Keywords: CH3NH3PbI3, microcrystalline, morphology, stability.
Among the existing technologies, most of them focus on how to make the existing structures grow or shrink, and few studies on the transformation between different structures.
Based on these, a novel CH3NH3PbI3 perovskite microcrystalline with a capsule-free cavity box structure was grown by CH3NH3PbI3 nanoribbon structure through solvent thermal reaction.
Results and Discussion Initially, a novel CH3NH3PbI3 perovskite microcrystalline with a capsule-free cavity box structure was grown by CH3NH3PbI3 nanoribbon structure through solvent thermal reaction.
The solvent thermal reaction of CH3NH3PbI3 perovskite microcrystalline includes two processes: (i) from nanoribbon structure to rectangular structure, and (ii) from rectangular structure to capsule-free cavity box structure, as showed in Fig. 1.

India apmg.nambissan@saha.ac.in, bvkl11@rediffmail.com, ckunalbmodi2003@yahoo.com Keywords : Defects, ferrites, inversion, nanocrystals, positron annihilation, spinel structure Abstract.
Between x = 0.9 and 1.7, the substitution resulted in continued decrease of Fe3+(B) ions and the structure got fully transformed into a normal spinel configuration during x = 1.8 to 2.0.
The cubic structure consisting of eight octants will have the neighboring ones with X and Y ions besides their coordinated oxygen ions.
In the unit cell of a normal spinel structure, there are eight X ions occupying the tetrahedral or A-sites and sixteen Y ions at the octahedral or B-sites.
Kulkarni : Physica B Vol. 217 (1996), p. 292 [10] http://chemistry.about.com/library/blperiodictable.htm [11] S.

Recently, nano-structured material as more fine admixtures is applied extensively to many common building materials, whose main hydrate C-S-H gel is a natural nano-structured material [6].
As is known to all, the nano-structured material has a higher specific surface area than cement particles, so nano-structured material will adsorbed more water compared to the same amount cement particles.
Hydration products with similar structure are easy to grow on it.
[9] Older I, Lea’s chemistry of cement and concrete, 4th ed., Arnold, London, 1998
[12] Scrivener KL, Capmas A, Calcium aluminate cements, in: Lea’s chemistry of cement and concrete, 4th ed., Arnold, London, 1998

The development of the improved catalytic performance and low-cost catalyst with amorphous structure is believed to strongly promote the practical application of hydrous hydrazine as a hydrogen storage material.
Therefore, amorphous catalysts have much higher availability than crystalline ones during catalytic reactions, which leads to the superior catalytic performances of amorphous structures.
Hydrazine monohydrate (H2NNH2·H2O, Aladdin Chemistry Co., Ltd, 98%), nickel(II) chloride hexahydrate (NiCl2·6H2O, Sinopharm Chemical Reagent Co., Ltd, >98%), cobalt chloride hexahydrate (CoCl2·6H2O, Sinopharm Chemical Reagent Co., Ltd, >99%), platinum potassium chloride (K2PtCl6, Sinopharm Chemical Reagent Co., Ltd, >99%), sodium borohydride (NaBH4, Aladdin Chemistry Co., Ltd, >98%), sodium hydroxide (NaOH, Aladdin Chemistry Co., Ltd, >96%), cerium(III) nitrate hexahydrate (Ce(NO3)3·6H2O, Sinopharm Chemical Reagent Co., Ltd, >99%), Copper(II) chloride dehydrate (CuCl2·2H2O, Sinopharm Chemical Reagent Co., Ltd, >99%), Iron sulfate heptahydrate (FeSO4.7H2O, Sinopharm Chemical Reagent Co., Ltd, >99% )were obtained.
In this case, the structure of the sample with Ce may be described to be NiCoPt/Ce2O3 amorphous nanocomposite.
We can reasonably conclude that the Ni8.1Co1.0Pt0.9/Ce2O3 with higher degree of amorphization because of the addition of Ce2O3 into the superfine structure of Ni8.1Co1.0Pt0.9.