Project Abstract

Abstract
This research project focuses on the synthesis and optical characterization of nickel-doped zinc oxide nanoparticles using the chemical bath deposition method. The study aims to investigate the influence of nickel doping on the structural, morphological, and optical properties of zinc oxide nanoparticles. The chemical bath deposition method offers a cost-effective and relatively simple technique for synthesizing nanomaterials with controlled properties. The first phase of the project involves the preparation of the precursor solutions containing zinc acetate, nickel acetate, and sodium hydroxide as the complexing agent. The deposition process is carried out at a controlled temperature and duration to facilitate the formation of nickel-doped zinc oxide nanoparticles. The structural characterization of the synthesized nanoparticles is performed using techniques such as X-ray diffraction (XRD) and scanning electron microscopy (SEM) to analyze the crystal structure and morphology. The optical properties of the nickel-doped zinc oxide nanoparticles are investigated through UV-Vis spectroscopy to determine the optical bandgap and absorbance characteristics. The incorporation of nickel ions into the zinc oxide lattice is expected to induce changes in the optical behavior of the nanoparticles, which can be attributed to the modified electronic structure resulting from the doping process. The results of this research project are expected to provide valuable insights into the structural and optical characteristics of nickel-doped zinc oxide nanoparticles. Understanding the influence of nickel doping on the properties of zinc oxide nanomaterials is crucial for potential applications in various fields such as optoelectronics, photocatalysis, and sensor technology. By elucidating the relationship between nickel doping and the optical behavior of zinc oxide nanoparticles, this study contributes to the ongoing research efforts aimed at developing advanced nanomaterials with tailored properties for specific applications. Overall, the synthesis and optical characterization of nickel-doped zinc oxide nanoparticles using the chemical bath deposition method offer a promising avenue for exploring the tunable properties of nanomaterials through dopant incorporation. This research contributes to the broader field of nanotechnology by advancing the understanding of the structural and optical properties of doped metal oxide nanoparticles, paving the way for innovative applications in various technological domains.

Project Overview

INTRODUCTION

1.1 GENERAL INTRODUCTION

Zinc oxide is an organic compound with formula ZnO it is a white powder that is insoluble in water. It is widely used as an additive into numerous materials and product including plastics, ceramic, glass, cement, rubber (e.g. car tire), lubricant, paint, ointment, adhesive, sealant, pigment, food, batteries etc. ZnO oxide is present in the earth crust as the mineral (Zinc cite), (Gonzalez, R. et al, 2008).

However, most zinc oxide (ZnO) nanoparticle can be prepared on a large scale at low cost by simple solution based method such as chemical bath deposition (CBD), chemical coprecipitation, Sol gel synthesis, spray pyrolysis pulse laser deposition and hydrothermal reaction etc (Zhong Q. P. etal, 1996).

Zno nanoparticles as an n-type semiconductor with a wide band gap (3.44eV) and large excitation binding energy (60 MeV), transition – metal doped ZnO is expected to play an important role in multidisciplinary area of materials science and future spintronic devices (Wolf S. A. et al; 2001).

Among the various methods to prepare ZnO nanoparticle, chemical bath deposition is an important method because the compounds will be dissolve in liquid and the microscopic slide also deposited in that same prepared solution. It does not require or depend on expensive equipment.

A semiconductor is a materials whose conductivity lies between that of a good conduction and a good insulator (Umoh, A. A; 2004). It properties also depends on dopant or impurities added to it. A n-type semiconductor carries current in the form of negative change while p-type carries current predominantly as electron deficiency called holes.

1.2 AIM AND OBJECTIVES

This study is aimed at modifying ZnO by doping it with nickel (Ni), a transition metal and the objectives are:

– To synthesis Ni-doped ZnO by chemical bath deposition (CBD) method.

– To characterized the sample to obtain it absorbance coefficient and band gab.

– To find the application(s) of the synthesis Ni-d-oped ZnO nanoparticle.

1.3 SCOPE OF THE STUDY

The scope of the study range from using chemical bath deposition (CBD) method of synthesis, to synthesized. ZnO an n-type semiconductor by doping it with transition metal of nickel to obtain zinc oxide nickel doped nanoparticle sample and using UV-vis method of characterization to obtained it absorption coefficient and the band gap of the sample and knowing the right application(s) of the characterized sample.