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IR analysis Infrared spectroscopy is the effective ways to characterize the material structure.
And characteristic absorption peak of the Keggin structure polyoxometalate appears at 700-1100 cm-1 [8, 9].
The structure of polyaniline was changed and partially decomposed at 320°C.
Chinese Journal of Inorganic Chemistry Vol.16 (2000), p. 815
Chinese Journal of Inorganic Chemistry Vol. 1 (2007), p. 51

In this paper, the spent Activated Carbon (AC) which came from caramel plant was regenerated by the method of microorganism and chemistry.
The optimal ultrafine grinding time was 5 h at 1200 rpm by adding 5 ‰ Triethanolamine, the effect of ultrafine grinding was better and the minimal size distribution was D90 3.82µm, D50 1.62 µm. the study ofAC surface modification was explored while combining the similar characteristics of AC and Carbon Black in its structure and composition.
Its micro state is a irregular microcrystalline structure, and the cross between turbostratic connect just as microporous [1-2].
Lai, Influence of KOH activation techniques on pore structure and electrochemical property of carbon electrode materials.
Yang. , Effects of the Properties of Phosphoric Acid-activated Carbon on Adsorption Capacity of Methylene Blue.Chemistry and Industry of Forest Products. 30 (2010) 1-6

Research on Immobilization of Heavy Metals in Sludge by Pyrolysis Fusheng Yang1,a, Ming Zhang2,b, Anning Zhou3,c, Minqun Lin4,d and Benlong Wei5,e 1 College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi Province, People’s Republic of China, 710054 2 College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi Province, People’s Republic of China, 710054 3 College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi Province, People’s Republic of China, 710054 4 College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi Province, People’s Republic of China, 710054 5 College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi Province, People’s Republic of China, 710054 a fushengyang@163.com, b zhangming_095@126.com, c anningzhou2004@yahoo.com.cn,
Surface structure and chemical composition were analyzed by means of scanning electron microscope (SEM) and inductively coupled plasma atomic emission spectrometer (ICP-AES).

Crystal structures of TiO2 (a) rutile, (b) anatase, (c) brookite.
Chemistry of Materials, 7, 663-671
Band structures of TiO2 doped with N, C and B.
Journal of Physical Chemistry, 96, 5540-5546
Journal of Physical Chemistry, 90, 4075-4080

The reaction mechanism had also been analysed by studying the crystal structure variation and reaction products.
We can conclude that HF can change the spodumene structure at relatively low temperature (400K)[3].
Since sulfuric acid cannot destroy the spodumene crystal structure, it is the HF that destroied the spodumene structure, which is generated by the reaction of fluorite and sulfuric acid.
The reaction mechanism of HF corroding the silicate mineral crystal structure is complex.
Crystal chemistry analysis on flotability difference of spodumenes with different colors, nonferrous metals, Vol. 52(4) (2000), p. 107(In Chinese) [16] Y.H.

Past and Current Accomplishments in Production of Ceramic Powders and Structures by Self-Propagating High-Temperature Synthesis Method Jan A.
The combustion zone is preceded by the preheating region and it is followed by structure formation and cooling zones.
The combustion wave structure may also be complicated by decomposition and equilibrium character of gas-solid reactions.
Significant contributions were made in the combustion synthesis of ceramic, intermetallic, and metallic nanopowders [21,22] as well as nanocomposite structures via mechano-chemistry [23].
Aruna, Chemistry of Nanocrystalline Oxide Materials, World Scientific, 2008

The combination of self-assembly and sol-gel chemistry has led to materials with tailored porosity (pore size, morphology, and arrangement) and has allowed for the preparation of films, powders, monoliths and spheres.
This approach can be advantageously used to design biomimetic and bioinspired materials [9] Another illustration of the high flexibility of molecular chemistry to elaborate hybrid materials with controlled structures is the elaboration of bridged polysilsesquioxanes.
Literature reports a large number of metal oxo-clusters with sizes ranging from 5 to 25 Å based on silicon, tin or transition metal chemistries that are potential nanobuilding blocks for the elaboration of hybrid materials [12,14].
Its structure consists of two orthogonal blocks of eight TiO6 octahedra with an organic shell constituted by 32 ethoxy groups.
These versatile nano-bricks are very good models to give information on the structure/mechanical properties relationship.

Facile Fabrication of Bi2O3 Chaplet-like Nanoparticles Yanping Gao, Zhifu Wu* School of Chemistry and Chemical Engineering, Anyang Normal University, 455002, Anyang, Henan, P.
The morphology, crystalline structure, and size of semiconductors are important elements in determining their physical and chemical properties[2].
Several lithographically fabrication methods for ordered arrays of ring-shaped structures have been developed[4].
Herein, we report a distinct and novel nanorings structure of pure β-Bi2O3 that is spontaneous made up of porous nanoparticles via a facile soft chemistry route of solvent circumfluence technique.
Two types of nanoring structures were found (as shown in Fig. 1 and 2).

Facile Fabrication of Bi2O3 Chaplet-like Nanoparticles Yanping Gao, Zhifu Wu* School of Chemistry and Chemical Engineering, Anyang Normal University, 455002, Anyang, Henan, P.
The morphology, crystalline structure, and size of semiconductors are important elements in determining their physical and chemical properties[2].
Several lithographically fabrication methods for ordered arrays of ring-shaped structures have been developed[4].
Herein, we report a distinct and novel nanorings structure of pure β-Bi2O3 that is spontaneous made up of porous nanoparticles via a facile soft chemistry route of solvent circumfluence technique.
Two types of nanoring structures were found (as shown in Fig. 1 and 2).

CaTiO3 has orthorhombic (Pbnm) structure at normal temperature and pressure (T ≤ 1486 K).
P and κ are the dipolar hyperfine structure parameter and the core dipolar constant, denoting the anisotropic and isotropic contributions to the hyperfine structure constants, respectively.
Solid State Chemistry Vol. 178 (2005), p. 2867 [11] J.L.O.
Weast: CRC Handbook of Chemistry and Physics (CRC Press, Boca Raton 1989) p.
Solid State Chemistry Vol. 177 (2004) p. 4420 [24] E.