ZnO Nanocrystalline Metal Oxide Semiconductor Via Sol Gel Method

2013 ◽  
pp. 1-8 ◽  
Author(s):  
Siti Salwa Alias ◽  
Ahmad Azmin Mohamad
Keyword(s):  
Metal Oxide ◽  
Sol Gel ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Nanocrystalline Metal ◽  
Gel Method ◽  
Sol Gel Method

scholarly journals Synthesis of Metal Doped TiO2 Nano-Composites by Sol-Gel Method and Their Structural Properties

2020 ◽  
Vol 6 (3) ◽  
pp. 915-917
Author(s):  
Rajani Altaf ◽  
Sharma Jyoti ◽  
Dave Pranav
Keyword(s):  
Metal Oxide ◽  
Sol Gel ◽  
Nano Composites ◽  
Gel Method ◽  
Doped Tio2 ◽  
Sol Gel Method ◽  
Ir Studies ◽  
Good Crystallinity ◽  
Ft Ir ◽  
Metal Doped

Metal oxide nano-composites plays a very important role in many areas of chemistry, physics and material science. This paper explains the synthesis and comparison of zinc and zirconium doped TiO2 metal oxide nano-composites and their different properties. Here the sol-gel method is used to synthesis both the nano-composites. Nano-composites have been characterized with XRD, AFM, Zetasizer & potential and FT-IR studies. XRD study revealed good crystallinity with the size range of 30 nm – 45 nm for both nano-composites. AFM studies also revealed the same. FTIR study reports the characteristics peaks of synthesised nano-composites.

INVESTIGATION OF ZrxLa1-xOy NANOCRYSTALLITES IN METAL–HIGH-k OXIDE–SILICON-TYPE NONVOLATILE MEMORY DEVICES

2012 ◽  
Vol 26 (31) ◽  
pp. 1250191 ◽  
Author(s):  
ALI BAHARI ◽  
REZA GHOLIPUR
Keyword(s):  
Electron Microscopy ◽  
Metal Oxide ◽  
Current Density ◽  
Nonvolatile Memory ◽  
Field Effect Transistors ◽  
Sol Gel ◽  
Dip Coating ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Nonvolatile Memory Devices

To investigate characterization of Zr x La 1-x O y nanocrystallites as a buffer oxide in forming the metal-oxide-semiconductor field effect transistors (MOSFETs) structure, we synthesized Zr x La 1-x O y nanocrystallites by sol–gel method. Moreover, from the solution prepared, thin films on silicon wafer substrates have been realized by "dip-coating" with a pulling out speed of 5 cm min -1. The structure, morphology, electrical properties of thin film was examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM) and transmission electron microscopy (TEM) techniques. Electrical property characterization was performed with metal-oxide-semiconductor (MOS) structures through capacitance–voltage (C–V) and current density–voltage (J–V) measurements. The leakage current density was below 1.0 ×10-6 A/cm 2 at 1 MV/cm.

An overview of the synthesis of CuO-ZnO nanocomposite for environmental and other applications

2018 ◽  
Vol 7 (3) ◽  
pp. 267-282 ◽  
Author(s):  
Susmita Das ◽  
Vimal Chandra Srivastava
Keyword(s):  
Metal Oxide ◽  
Environmental Science ◽  
Mixed Oxides ◽  
Sol Gel ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Wet Impregnation ◽  
Practical Applications ◽  
Wide Range ◽  
Co Precipitation

Abstract In the field of environmental science, metal oxide nanocomposites have gained a great attention for both theoretical and experimental aspects of their upgradation because of their wide range of practical applications such as catalysts, sensors, hydrogen storages, and optoelectronics. Among all nanocomposites, Copper oxide-zinc oxide (CuO-ZnO) has attracted more research due to their excellent tunable catalytic, electrical, optical, and magnetic properties and environment-friendly nature. Coupling of one metal oxide semiconductor with another metal oxide semiconductor produces an enlarged surface area, which provide more reactive sites, promotes mass transfer, promotes electron transfer, and avoids photo-corrosion of nanocomposites, which enhances its efficiency. The CuO-ZnO nanocomposite has been prepared by various methods such as co-precipitation, sol-gel, wet impregnation, and thermal decomposition. Depending on the preparation method and conditions used, different types of CuO-ZnO nanocomposites like Cu-doped ZnO, Cu supported/impregnated on ZnO, and CuO-ZnO mixed oxides with different morphologies of CuO-ZnO nanocomposites have been obtained. This article reviews the synthesis techniques of the CuO-ZnO nanocomposite and its morphology. Various practical applications of the CuO-ZnO nanocomposites have also been discussed.

Preparation of conducting film composed of polyaniline and metal oxide by sol-gel method

1999 ◽  
Vol 14 (1) ◽  
pp. 5-7 ◽  
Author(s):  
Takuya Hori ◽  
Noriyuki Kuramoto ◽  
Hideyuki Tagaya ◽  
Masa Karasu ◽  
Jun-ichi Kadokawa ◽  
...  
Keyword(s):  
Thin Films ◽  
Heat Treatment ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Sol Gel ◽  
Silica Matrix ◽  
Conducting Film ◽  
Gel Method ◽  
Sol Gel Method

Conducting thin films were prepared by entrapping water-suspended polyaniline into a silica matrix by a sol-gel route. Without metal oxide, the conductivity of the film decreased after heat treatment. However, in the presence of metal oxides such as TiO2 and Al2O3, the conductivity increased after heat treatment at 85 °C and reached 17 Scm−1 The conductivity of the film depended on the kinds and amounts of metal oxides and the temperature of heat treatment.

Synthesis of NiO Based Bimetallic Mixed Metal Oxide Nanoparticles by Sol-Gel Method

2012 ◽  
Vol 585 ◽  
pp. 164-168 ◽  
Author(s):  
Nisha Bayal ◽  
P. Jeevanandam
Keyword(s):  
Electron Microscopy ◽  
Metal Oxide ◽  
Band Gap ◽  
Metal Oxide Nanoparticles ◽  
Sol Gel ◽  
Mixed Metal Oxide ◽  
Oxide Nanoparticles ◽  
Gel Method ◽  
Mixed Metal ◽  
Sol Gel Method

Nickel oxide based bimetallic mixed metal oxide nanoparticles are of considerable interest and they have been used as catalysts for NOx decomposition and as reactive adsorbents for ultra deep desulfurization. In the present study, nanoparticles of NiO-ZnO, NiO-CuO and NiO-MgO were synthesized by sol-gel method. The mixed metal oxide nanoparticles were characterized by X-ray diffraction, diffuse reflectance spectroscopy, field emission scanning electron microscopy and transmission electron microscopy. Pure NiO nanoparticles show a band gap of 4.24 eV and the band gap shows a blue shift or red shift in the case of mixed metal oxide nanoparticles.

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