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Furthermore, it has a high water holding capacity due to its network structure, and can be easily decomposed by the environment.
Vegetable cellulose shares the same molecular structure as this material, but it exhibits distinct physical properties.
However, the main obstacle in processing cellulose is its insoluble nature in most common solvents due to its structure.
They are phenolic compounds that have many variations with more than 10,000 known structures [99].
Li, “Cellulose Based Aerogels: Processing and Morphology,” RSC Green Chemistry, vol. 2018-Janua, no. 58, pp. 25–41, 2018, doi: 10.1039/9781782629979-00025

Introduction Lead sulfide (PbS) is an IV-VI direct band gap semiconductor with a band gap structure of 0.41 at 300 K [2].
Therefore, a large variety of film structures can be obtained [6].
The sharp XRD peaks indicate that the thin films possess a good crystalline structure[10] .
Stavrinadis et al. [9] synthesized Schottky solar cell by using a low-temperature organometallic chemistry method with two structures, namely, ITO/SnS/PbS/Al and ITO/PbS/SnS/Al, and achieved a conversion efficiency of 0.26% and 0.07%, respectively, under 1.5 AM illumination. 4.
The SEM analysis showed that the PbS thin films exhibited a nanocoral structure.

Synthesis and Characterization of Nanostructured Mechanical Cu-Fe-Co Alloy Alisiya Biserova-Tahchieva1,a*, Isabel López-Jiménez2,b and Núria Llorca-Isern3,c 1-3University of Barcelona, Department of Materials Science and Physical Chemistry, Martí i Franquès 1-10, 08028, Barcelona Spain.
Nanocrystalline structure of CuFeCo (50:25:25 wt%) alloy has been obtained by high energy mechanical milling from elemental metal powder mixture during large hours of work.
It was observed that Co was the first element entering into the structure of Cu, its peaks decreased in intensity as observed in previous works after less than 3 hours of milling.
This is also a confirmation of the fcc copper as the observed rings represent its structure.
With the milling time it can be observed the progress of the polycrystalline structure as rings become more diffused.

In order to protect samples without destructing the original three-dimensional structure, there was no press after formation.
Subsequently, the structure of samples was studied by SEM.
This structure is beneficial to improve the filtration efficiency of material greatly.
These results are consistent with the structure analysis above.
This structure is beneficial to improve the filtration efficiency of material greatly and also improve the strength of material effectively.

Because of the three-dimensional tunnel structure, Li+ can be from the spinel lattice deintercalation, and will not cause the collapse of the structure, which is considered to be the most development potential of the lithium-ion battery cathode material [3].
The result indicates that the synthesized product has a well-defined spinel structure.
[3] M Li, R H Li, J W Wang, Structure Characterization and Electrochemical Properties of LiMn2O4 Coated with Li3PO4, J.
Department of Chemistry. 18 (2007) 98-101.In Chinese [4] Araki K, Sato N, Chemical transformation of the electrode surface of lithium ion battery after storing at high temperature, J Power Sources.124 (2003) 124-128
[5] CY Ouyang, S Q Shi, M S Lei, Jahn-Teller distortion and electronic structure of LiMn2O4, J.

Cuza” University, Chemistry Departament, Blvd.
Introduction Simple perovskites with ABO3 structure are known as potential magnetoresistive materials (B = Mn or transition elements).
If the A or/and B positions are occupied by other cations, the local structure can be quite different from the observed crystallographic structure.
Some different structures (unit cells) were tested by means of FullProf program.
The concentration of all foreign phases is about 2-3%; they affect only slightly the magnetic or crystal structure.

Nevertheless, it also exhibits weak ferromagnetism at room temperature due to a magnetic cycloidal spin structure with a long periodicity of 62 nm.
Results and Discussion Crystal structure.
But when the sintering temperature increases to 900 °C, the grain size and the pores increase, the structure is not dense, which may be the rapid heating and cooling rate, it would be cause porosity and cracking.
Wei, Size-controlled synthesis of BiFeO3 nanoparticles by a soft-chemistry route, J.
Esparza, BiFeO3: A review on synthesis, doping and crystal structure, Integr.

The heating-treatment was applied in order to control the material’s structures.
Results and Discussion Structure and composition of the xerogel.
This kind of compositions and structures was suitable to prepare degradable biomaterials.
In this study, a novel silica-based xerogel with meso-porous structure was synthesized by improved sol-gel method.
Bell et al., Effect of materials parameters on mineralization and degradation of sol-gel bioactive glass with 3D-ordered macroporous structures.

However, the nanocomposite structure is maintained but with different constituents.
Preparation and chemistry, J.
Doremus, Silicon oxycarbide glasses: part II Structure and properties, J.
The observed silicon units are designed according to the usual notation employed in silicon chemistry: Q [SiO4], T [SiCO3], D [SiC2O2], M [SiC3O] and X [SiC4].
These results indicate that the structure of the hybrid nanocomposite still remains.

KGM is a kind of strongly hydrophilic polysaccharide and is sensitive to PH and has similar structures with glycosaminoglycan of cartilage matrix.
Adopting crosslinking method and freeze-drying method, the three-dimensional network- structure KGM with high porosity and adjustable pore size can be obtained.
This indicates that COL II greatly undermines the crosslink of KGM and disrupts its crystal structures.
The prepared optimal KGM/COL II composite cartilage scaffolds are three dimensional network and porous structures.
Lin: Chinese Journal of Structural Chemistry Vol. 11(6)(2003), p. 633–642 [10] Y.Q.