THE EFFECT OF pH VARIATION IN SYNTHESIS OF SnO2 NANOPARTICLES USING GLUCOSE AS CAPPING AGENT
Mala Utami*, Meibi Lestari GP, Retti Hanggia Anggela, Intan Delia Sapitri, Asdim*
Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Bengkulu
Jl.W.R.Supratman, KandangLimun 38317 A Bengkulu, Indonesia.
*e-mail address: asdim[at]unib.ac.id, malautami0598[at]gmail.com
Abstract
SnO2 nanoparticles are n-type semiconductor materials with the band gap of 3.6 eV. These materials have been widely used in various applications, for example transparent electrodes, microsensors, catalysts and resistors. Generally, the synthesis of SnO2 nanoparticles is influenced by several factors such as reactant concentration, capping agent, temperature, stirring and pH of the solution.This study aims to determine the effect of pH variations on the crystallinity and morphology of SnO2 material. This synthesis was carried out using the hydrothermal method for 3 hours at 100 0C with glucose as a capping agent. The effect of pH on the SnO2 nanoparticlesas synthesized was studied using X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM). XRD analysis shows that all SnO2 nanoparticles as synthesized relatively high purity and pH variations greatly influence to the crystallinity of the SnO2 nanoparticles. SEM images show that the aggregate formation is strongly influenced by changes in pH of the reaction solution. These results indicate that optimizing the pH of the reaction solution would be an alternative route for controlling the morphology of SnO2 nanoparticles.
Keywords: Nanoparticles, SnO2, Capping Agent, Glucose
Topic: Chemistry