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Biosilica from diatom microalgae has a porous structure that can be filled with active substances and used as a carrier material in drug delivery systems [15].
However, to obtain a porous silica structure, a complex pore synthesis process is required because it requires a suitable template and surfactant [10].
Biosilica with a porous structure has the potential as carrier for active substances [15], in our case for HL component for SHDM composites.
The immersion of the biosilica in the HL without stirring shows that the biosilica structure is still intact.
The SEM image shows the structure of the biosilica is easily crushed.

Photodegradation of Reactive Red 141 and Reactive Yellow 105 dyes using prepared TiO2 nanoparticles Augustine Amalraj, Anitha Pius* Department of Chemistry, The Gandhigram Rural Institute – Deemed University Gandhigram, Dindigul – 624 302.
Highly substituted aromatic rings joined by one or more azo groups characterize their chemical structures.
These substituted ring structures make the molecules recalcitrant which the conventional wastewater treatment processes do not degrade.
The chemical structure of these dyes RR-141 and RY-105 are shown in Fig. 1.
Chemical structures of selected dyes (a) RR-141 and (b) RY-105.

CdSe NCs synthesized above had nearly perfect crystal structures and narrow size variations, but fluorescence quantum yields were relatively low (ca. 10%).
QDQW structure is analogous with a planar quantum well system.
As shown, we succeeded in control of QDQW structure, resulting of tuning the photoluminescence.
Conclusions Microreactors are effective tool to control reaction conditions precisely, and are able to tune the particle size and structure to tune their properties.
Lowe: Microreactors, New Technology for Modern Chemistry, (Wiley-VCH, Weinheim 2000)

Tempering causes many changes in the as-quenched structure including reductions in dislocation density, crystal growth, and precipitation of carbides and other phases depending on steel chemistry [2].
Results and Discussion Example prior austenite grain structures for the equiaxed and TMP conditions are shown in Fig. 1(a).
A fine grain structure is maintained in both conditions even after tempering, and it is apparent that TMP produces further refinement.
Hansen, “Structure and properties of some directly quenched martensitic steels” in Proceedings of the International Symposium on Accelerated Cooling of Rolled Plates, G.
Maki, “Ultrafine structure and high strength in cold-rolled martensite,” Metallurgical and Materials Transactions A, vol. 43, no. 10, 2012, pp. 3517–3531.

The formation of crystalline structure is not observed in ASP Y2O3:Eu3+ nanoparticles, resulting in an intense peak observed at 594 nm.
The replacement of Y3+ ions by Li+ ions gives rise to the defect formation in the structure of Y2O3.
Results and Discussion Doping and co-doping have little influence on the structure of host Y2O3.
Lee, Crystal structure and photoluminescence properties of Eu-doped Y2O3 nanoparticles prepared by mechanical milling. 
Inorganic Chemistry Frontiers, 7(2) (2020) 505-518

The chemical structure of these polymers was confirmed by FT-IR and 1H-NMR spectroscopy.
Introduction Based on recent eco-friendly development in green chemistry, bioactive materials are being actively studied in the fields of cosmetics, food, and pharmaceuticals.
Structure of PASP-Lysine The structure of PASP-Lysine was determined using 1H NMR (Fig. 1).
The structure of the synthetized PASP-HDA-Lysine was confirmed by 1H NMR.
Chu, Structure and dynamics of block copolymer colloids, Langmuir 11 (1995) 414-421

The structure of PbS thin films was indicated to be cubic face centered [3, 4].
Crystal structure evolution.
XRD analyses were used to study the films crystal structures.
Evolution of crystal structure.
Chemistry.

Colloid chemistry considers that the surface of substance has positive charge if medium pH is less than its isoelectric pH and the surface of substance has negative charge if medium pH is more than its isoelectric pH[3].
Under hydraulic structure condition, chemical reaction would be produced between Ca(OH)2 and laterite which is the main building material of embankments
Therefore, the strength and anti-seepage ability of laterite engineering structure is slowly deteriorated by alkaline reinforcement materials.
The structure with the main building material of laterite is mostly under acid environment.
Collochemistry character of the structure connection among red clay mineral grain [J].

Zhang, Synthesis of V2O5 hierarchical structures for long cycle-life lithium-ion storage, J.
Jin, Microemulsion-based synthesis of V1_xWxO2@SiO2 core–shell structures for smart window applications, J.
Xie, Design of vanadium oxide structures with controllable electrical properties for energy applications, Chem.
Fjellv°ag, High power nano-structured V2O5 thin film cathodes by atomic layer deposition, J.
Sauer, Structure and properties of bimetallic titanium and vanadium oxide clusters, Phys.

Azimirad1, e * 1Malek-Ashtar University of Technology, Tehran, Iran. 2Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran aMohammadi79@aut.ac.ir, bsaeed.safa@modares.ac.ir, csam.safalo@gmail.com, dm_rabani@iust.ac.ir, eazimirad@yahoo.com (corresponding author) Keywords: ZnO; rGO; Photodegradation; 4-Nitrophenol.
The G band is attributed to all graphitized sp2 structure of carbon while D and 2D bands suggest the presence of defects and the overtone of the D band, respectively [23].
These extra bands can be assigned to the heterointerfaces between metal-oxide semiconductor and carbonaceous structure [24].
The better UV-assisted photocatalytic performance of sample grown at pH=11, 12 could be related to its highly porous structure [29,35,36].
By comparing the active surface area of the samples, it was suggested that the highly porous structure of ZnO nanorod/rGO is preferred for photocatalytic aims.