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Titanium surface heating in air at 700°C for half hour (A); titanium surface heating by chemistry and heat at 700°C for half an hour in air (B).
Therefore, Titania gels with an amorphous structure, which were prepared at lower temperature, are assumed to have a large number of Ti-OH groups on their surface than those with a rutile microporous structure.
This epitaxial relationship may lead to the favorable apatite formation on rutile structure.
But the porous rutile structure has the high ability of apatite formation.
This also implies that porous structure is important to affect the ability of apatite formation for rutile structure.

Zhang: Quantify chemistry analytical experimentation (Higher Education Press, Beijing 2004)
Huheey: Inorgaganic Chemistry: Principles of Structure and Reactivity.
Dai: Coordination Chemistry, Volume 12 of Inorganic Chemistry Serie, Science Press, Beijing (1998)
Moeller: Inorganic Chemistry (John Wiley & Sons Publishers, London 1980).

Finally, nanosize ZrB2 particles are hardly obtained by general wet chemistry method.
Alternatively, the polymer-templating strategy, as a new wet chemistry method, seems to be an effective method for synthesis of ultra-fine ZrB2 powders in low temperature.
This paper deals with a new wet chemistry method, using polymer template method to synthesize nanosized ZrB2 powders.
As shown in Fig. 2, the precursor powders have an obvious mosaic structure and needle-like ZrO2 with B2O3 was firmly fixed inside the carbon matrix.
Feng, Morphology evolution of ZrB2 nanoparticles synthesized by sol–gel method, Journal of Solid State Chemistry 8(2011) 2047-2052

A Theoretical Study of the OH + HN2 Reaction Tiancheng Xiang *, Hongyan Si School of Chemistry and Chemical Engineering, Xuchang University, Xuchang, China xtc@iccas.ac.cn Keywords: DFT calculations, reaction mechanism, OH radical, HN2 radical.
Introduction As an important reactive intermediate, OH radical has been subjected to wide investigations in atmospheric chemistry and combustion chemistry[1-5].
As a possible pathway to product or reduce NO, the radical-radical reaction of OH with HN2 must be interested in the combustion chemistry.
im1 im2 im3 im4 im5 im6 im7 im8 im9 im10 ts1 ts2 ts3 ts4 ts5 ts6 ts7 ts8 ts9 ts10 Figure 1 Optimized structures of transition states and intermediates at the B3LYP/6-311++G(3df,3pd) level.
Evaluated kinetic and photochemical data for atmospheric chemistry: Volume I - gas phase reactions of Ox, HOx, NOx and SOx species.

Donne3,b 1Study Program of Chemistry Education, University of Tadulako, Tondo, Palu 94221, Indonesia 2Discipline of Chemistry, University of Newcastle, Callaghan 2308, Australia 3Discipline of Chemistry, University of Newcastle, Callaghan 2308, Australia apurnamaningsih@yahoo.com or Purnama.Ningsih@uon.edu.au, bClovia.Holdsworth@newcastle.edu.au, cScott.Donne@newcastle.edu.
The presence of the SO42- ion from the K2SO4 electrolyte solution during electrochemical cycling contributes to the swelling of the polymer structure [11], or the thin film in this case.
Donne: Procedia Chemistry Vol.16 (2015), p. 540-547
Endres: The Journal of Physical Chemistry B Vol.109, No.15 (2005), p. 7159-7168

Silver-mediated perylene–3, 4, 9, 10–tetracarboxylate tetrapotassium salt aggregation for highly sensitive detection of iodide in water Jiajun Ma1, a, Leicheng Yin1, b, Gang Zou1, c and Qijin Zhang1, d* 1 CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Polymer Science and Engineering, Anhui Key Laboratory of Optoelectronic Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China aJiajunma@yeah.net, bchly@mail.ustc.edu.cn, cgangzou@ustc.edu.cn, dzqjm@ustc.edu.cn *Correspondence to: Q Zhang (Email: zqjm@ustc.edu.cn) Keywords: silver, aggregation, iodide, fluorescent, sensor.
Referring to the structure of potassium salt of perylene–3, 4, 9, 10–tetracarboxylic bisanhydride (PTK), we noted that it contains carboxyl groups that are similar to the binding site of a water-soluble organometallic conjugated polyelectrolyte [11].
[6] Han, B., Yuan, J., Wang, E: Analytical chemistry Vol. 81 (2009), p.5569-5573
P: Chemistry of Materials Vol. 26 (2014), p. 3876-3878
[14] Wang L, Cui Q, Chen X F, et al.: Australian Journal of Chemistry Vol. 66 (2013), p. 692-700

The rich and well documented chemistry of biocompatible silica coatings may allow practical implementation of MNPs in pharmaceutical and biomedical applications.
In the bare sample (Fig. 5a), the band around 579 cm-1 corresponds to Mn-O vibrations characteristic of perovskite structure [31].
Shaterian, Pharmaceutical Chemistry Journal 2018, 51(10), 852-862
Sassi, Journal of Materials Chemistry 2011, 21, 3849-3857
Awan, Materials Chemistry and Physics 2012, 137, 365-371

The results showed that the crystalline structure of the calcined and sintered samples was influenced by the temperature, because, according to the increase in temperature, the evolution of the formed crystalline phases was observed and only the Zn3Nb2O8 and ZnNb2O6 phases prevailed in the final microstructure.
The X-ray diffraction technique for the observation of the crystalline structures obtained was performed by the Panalytical X-ray diffractometer model X'Pert, with the following conditions: CuKα radiation obtained at 45 kV and 40 mA, 2θ between 10 and 90° with angular step of 0.02° and exposure time of 10s.
Wu, Huang K.T., W.F Su: Materials Chemistry and Physics Vol. 98 (2006), p. 406
Fadagar Cosma: Journal of Chemistry Vol. 17 (2015), p. 1

Borated layers structure.
Meanwhile, the buildup layer structure is not homogeneous in depth.
In this zone eutectic structure is observed.
The nature of formed ferrite and pearlite structure indicates formation of coarse-grained austenite structure during electron-beam heating.
High voltage electron accelerators at a power of up to 90 kW. – Radiation Physics and Chemistry. – 1990. – V. 35. - № 4-6. – P.658-661

Optimization of Hydrothermal Temperature and Time Parameters in the Synthesis of Hierarchical ZSM-5 from Kaolin by Taguchi Method Imroatul Qoniah1,a, Didik Prasetyoko1,b,*, Hartati2,c , Yatim Lailatul Nikmah1,d 1Department of Chemistry, Faculty of Sciences, Institut Teknologi Sepuluh Nopember, Keputih, Sukolilo, Surabaya 60111, Indonesia 2Department of Chemistry, Faculty of Science and Technology, Universitas Airlangga, Kampus C UNAIR, Jl.
Based on FTIR result, all samples except S7 have ZSM-5 structure and mesopore surface except S8-S9 sample.
Material with micropore crystal structure, S8 and S9, have Smicro > 300 m2/g, higher Vmicro, and only have Dmicro.
Chemistry, Fac.
Flanigen, Structural analysis by infrared spectroscopy, In: Rabo, J.A. ed, Zeolite Chemistry and Catalysis, ACS Monograph, 171 (1976) 80-117 [18] M.L.