Enhanced Visible‐Light Driven Photocatalytic Reduction of Cr(VI) Using EDTA‐Modified in 2 O 3 Nanoparticles

In this study, In 2 O 3 nanoparticles were first synthesized using thermal decomposition of indium acetate at 350°C in air. Various techniques were used to characterize the In 2 O 3 nanoparticles. The surface of In 2 O 3 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 In 2 O 3 nanoparticles with EDTA. The EDTA‐modified In 2 O 3 nanoparticles were explored as catalyst for photoreduction of Cr(VI), and they behave as better photocatalyst compared to the unmodified In 2 O 3 nanoparticles.