Green Synthesis of Palladium/Titanium Dioxide Nanoparticles and their Application for the Reduction of Methyl Orange, Congo Red and Rhodamine B in Aqueous Medium

Title:Green Synthesis of Palladium/Titanium Dioxide Nanoparticles and their Application for the Reduction of Methyl Orange, Congo Red and Rhodamine B in Aqueous Medium

Volume: 20 Issue: 9

Author(s): Mehdi Maham*, Mahmoud Nasrollahzadeh, Mojtaba Bagherzadeh and Reza Akbari

Affiliation:

• Department of Chemistry, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul,Iran

Keywords: Green synthesis, Pd/TiO₂, nanocatalyst, reduction, organic dyes, Euphorbia thymifolia.

Abstract: Objective: Palladium nanoparticles (Pd NPs) supported on the TiO₂ NPs were prepared using Euphorbia thymifolia L. leaf extract. The Pd/TiO₂ NPs were characterized by FESEM, EDS, TEM and XRD analysis and were used as nanocatalysts for the reduction of a variety of organic dyes. To the best of the author’s knowledge, this study explains the first report to the synthesis of Pd/TiO₂ NPs using Euphorbia thymifolia L. leaf extract.

Method: 1.0 G of TiO₂ was dispersed in 40 mL of 0.3 Mm PdCl₂ solution and sonicated for 30 min. Then, 20 mL of the plant extract was mixed under continuous stirring at 60 °C for 2 h. The prepared Pd/TiO₂ NPs were centrifuged, washed and then dried.

Results: FESEM imaging showed the formation of NPs in the size range of 19-29 nm. The Pd/TiO₂ NPs exhibited high activity towards the reduction of Methyl Orange, Congo red and Rhodamine B in the presence of NaBH₄ in aqueous medium during 4, 1 and 54 s, respectively.

Conclusion: The synthesis of the Pd/TiO₂ NPs by this route is rapid, simple, less time consuming, environmentally safe and compatibility for medical and pharmaceutical applications because of minimizing the use of toxic or hazardous organic solvents and reagents. Furthermore, the biosyenthesized nanocatalyst can catalyze the reduction of organic dyes during short-time and can be recovered and recycled several times without significant loss of activity.

Cite this article as:

Maham Mehdi *, Nasrollahzadeh Mahmoud , Bagherzadeh Mojtaba and Akbari Reza, Green Synthesis of Palladium/Titanium Dioxide Nanoparticles and their Application for the Reduction of Methyl Orange, Congo Red and Rhodamine B in Aqueous Medium, Combinatorial Chemistry & High Throughput Screening 2017; 20 (9) . https://dx.doi.org/10.2174/1386207320666171023154523