The integration of gas sensor components into smart phones, tablets and wrist watches will revolutionize the environmental health and safety industry by providing individuals the ability to detect harmful chemicals and pollutants in the environment using always-on hand-held or wearable devices. Metal oxide gas sensors rely on changes in their electrical conductance due to the interaction of the...

Metal oxides play a very important role in many areas of chemistry, physics and materials science.The metal elements are able to form a large diversity of oxide compounds. In this investigation, wesynthesis SnO2 and C,N,S-tridoped SnO2 nanoparticles by precipitation method. The synthesizedSnO2 and C,N,S-tridoped SnO2 nanoparticles were characterized by instrumental analysis methods,such as X-ra...

In2O3 exhibits a dramatic increase in solubility of SnO2 and ZnO when they are cosubstituted into In2O3. The resultant material, In2-2xSnxZnxO3-δ with x ) 0-0.4, displays the same order of magnitude conductivity and transparency compared with bulk ITO (tindoped indium oxide). Rapid quenching of In2-2xSnxZnxO3-δ raises the conductivity and widens the optical bandgap while lowering the optical tr...

Recent advances in the field of nanotechnology have led to the synthesis and characterization of an assortment of quasi-one-dimensional (Q1D) structures, such as nanowires, nanoneedles, nanobelts and nanotubes. These fascinating materials exhibit novel physical properties owing to their unique geometry with high aspect ratio. They are the potential building blocks for a wide range of nanoscale ...

Subsolidus phase relationships in the Ga2O3–SnO2–ZnO system were determined at 1250 ◦C using solid state synthesis and X-ray powder diffraction. The two spinels, Zn2SnO4 and ZnGa2O4, formed a complete solid solution. The optical band gap of the spinel varied with composition from 3.6 eV (Zn2SnO4) to 4.7 eV (ZnGa2O4). All samples were white and insulating except those containing Ga-doped ZnO. Th...

The thin films on the basis of metal oxides of SnO2-ZnO-SiO2 were prepared by sol-gel techniques, and CVD. During the experiment optical and morphological characteristics of materials were investigated. According to the study we can say that this system is promising for use in transparent multisensor devices.

A cotton-like ZnO/SnO2 nanocomposite was grown by the carbothermal evaporation of a mixture of ZnO and SnO2 powders at 1100oC by the vapour-liquidsolid process, in which the Sn particles produced by the reduction of SnO2 act as the catalyst. Field-emission scanning electron microscope images suggest that the composites are made of microfibre-nanowire junction arrays. The structure is formed due...

Construction of metal oxide nanoparticles as anodes is of special interest for next-generation lithium-ion batteries. The main challenge lies in their rapid capacity fading caused by the structural degradation and instability of solid-electrolyte interphase (SEI) layer during charge/discharge process. Herein, we address these problems by constructing a novel-structured SnO2-based anode. The nov...

We report on the suitability of water-soluble non-polymeric electrospun cyclodextrin (CD) nanofiber templates by using atomic layer deposition (ALD) to yield metal oxide tubes. To demonstrate this, watersoluble electrospun CD nanofibers were chosen as template to produce metal oxide tubes where we have tested two examples of ALD coatings, namely, Al2O3 and ZnO. After the ALD coating on the CD n...

This paper reports the synthesis of polypyrrole coated SnO2/ZnOelectrospunnanofibers via vapor phase polymerization method. In order to prepare one dimensional (SnO2- ZnO)/polypyrrole with the core sheath structure, first SnO2-ZnO composite nanofibers were synthesized via electrospinning method followed by adsorption of Fe 3+  on the surface of the SnO2-ZnO nanofibers and finally pyrrole w...