Enhanced Visible-Light Driven Photocatalytic Reduction of Cr(VI) Using EDTA-Modified in2O3 Nanoparticles

Abstract

In this study, In₂O₃ nanoparticles were first synthesized using thermal decomposition of indium acetate at 350°C in air. Various techniques were used to characterize the In₂O₃ nanoparticles. The surface of In₂O₃ nanoparticles was then modified with ethylenediaminetetraacetic acid (EDTA) using a simple and cost-effective method. Various analytical methods such as FT-IR spectroscopy, TGA, and CHO analyses were used to confirm the surface modification of In₂O₃ nanoparticles with EDTA. The EDTA-modified In₂O₃ nanoparticles were explored as catalyst for photoreduction of Cr(VI), and they behave as better photocatalyst compared to the unmodified In₂O₃ nanoparticles.