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Nanomaterials of CeO2 with A. vera were synthesized by using simple chemical method. Grapes drops are used as an oxidizing agent. Structural and morphological studies of nanomaterials of cerium oxide (CeO2), were studied for combustion method of preparation. The precursor solution was initialized by a hydrothermal reaction. Cerium hydroxyl carbonate precursors which involves cerium (III) nitrate Ce(NO3)3. 6 H2O with (1.0M) of seashell powder, 3% A. vera, extracts, grapes and pomegranate drops and this complex solution was used to produce the CeO2 powder particles. We have prepared another sample with 5% of Aloe vera extract and found that 3% Aloe vera extract has lesser grain size and enhanced band gap values, so the article explained the sample analysis of combination with 3% extract of Aloe vera. The product has the rod pattern which was the unusual features appear to originate from the unique crystal chemistry aspects. From the optical absorption spectrum, it has been shown that the CeO2 rods have 3.847eV of direct band gap energy. The minimum inhibitory concentration (MIC) values of the synthesized compounds exhibited activity towards various microbial pathogens such as B. subtilis (15μg/mL), S. aureus (50μg/mL), S. epidermidis (20μg/mL), E. faecalis (25μg/mL) and towards E. coli (100μg/mL), K. pneumoniae (50μg/mL) and P. aeruginosa (75μg/mL) respectively. The tests on bacterial activities confirmed that the CeO2 rods are suitable hand for the biological applications. The seashell structure and the phytochemical contents of A. vera might enhance its bacterial activities.

Titanium dioxide represents an effective sensors and also used for the self-cleaning surfaces. Additionally, it can be used as antibacterial agent because of strong oxidation activity and super-hydrophilicity. Visible light-activated TiO2 doped with SnO2 could be prepared by RF sputtering, nonmetal doping or sensitizing of TiO2 doped with SnO2. This paper reviews preparation methods of TiO2 doped with SnO2 with metallic and nonmetallic species, including various types of dopants and doping methods currently available. A further development along this line inductive resistance, other mass loss measurements for a sensing element in a corrosive environment.

The organic carbonaceous materials play an important role in governing the optical transport phenomena and bioavailability of nanomaterials. The nanomaterials established for the absorption of neutral organic compounds do not always apply to the facts and the importance of accounting for the particular sorption behavior of being increasingly recognized. This work carries out a study on the reaction of synthesis and optical and electrical characterizations of CNT carbon nanostrutures. The crystal size was calculated by using Scherer equation as 55 nm and its thermal diffusivity 4.515 × 10-7 m2/sec, the conductivity of the sample was measured as 75.69. At the surface, the progressive incorporation of dopant triggers the diffusion of CNT to the surface, which results in fast formation carbon nanostructures of CNT, its crystallite size lies in the range of 36 nm.

Stable oxides of Ni, Fe and Co nanoparticles are synthesized by chemical route using leaf extraction. Structural, biological morphological and magnetic properties were investigated. X ray pattern shows a polycrystalline structure of samples. Diffraction planes of (200), (122) and (200)-oriented crystal structures were revealed by X-ray pattern for NiO, Fe2 O3 and CoO respectively. Hexagonal, orthorhombic and cubic crystal structures have been revealed respectively for NiO Fe2 O3 and CoO nanoparticles. Microscopic structure has been detected by using of Scanning Electron Microscopy. Ni, Fe and Co is present at 71%, 78.8%, 79% as indicated by EDS analysis respectively. Mass magnetization values of 51, 61 and 54 emu/g are recorded for NiO, Fe2 O3 and CoO nanoparticles.

This article provides an overview of research on nanoparticles quantum confinement processing of nanoparticles and processing applications in theoretical concepts of optical and electrical studies. The main text of this review is organized into two sections. Section 1 discusses the use of optical methods for the applications of nanoparticles and its model exciton properties of nanostructured particles and in section 2 discusses for dispersion of agglomerated nanoparticles and its various equations for all, such as photo luminescent and transparent conductive materials. These studies explain the theoretical equations of both nanoparticles and thin film.