Superior Co-catalysis by Bimetallic Nanostructure for TiO₂ Photocatalysis

Title:Superior Co-catalysis by Bimetallic Nanostructure for TiO₂ Photocatalysis

Volume: 2

Author(s): Bonamali Pal*, Anila Monga and Aadil Bathla

Affiliation:

• Thapar Institute of Engineering and Technology, Patiala 147004, Punjab,India

Keywords: Bimetallic nanocatalysts, bimetal-TiO₂ photocatalysts, improved co-catalysis, Core@shell nanostructure, photocatalytic hydrogenation, visible light sensitivity.

Abstract:

Background: Bimetallic nanocomposites have currently gained significant importance for enhanced catalytic applications relative to monometallic analogues. The synergistic interactions modified electronic and optical properties in the bimetallic (M1@M2) structural morphology e.g., coreshell /alloy nanostructures resulting in a better co-catalytic performance for TiO₂ photocatalysis.

Objective: Hence, this article discusses the preparation, characterization, and co-catalytic activity of different bimetallic nanostructures namely, Cu@Zn, Pd@Au, Au@Ag, and Ag@Cu, etc.

Methods: These bimetallic co-catalysts deposited on TiO₂ possess the ability to absorb visible light due to surface plasmonic absorption and are also expected to display the new properties due to synergy between two distinct metals. As a result, they reveal the highest level of activity than the monometal deposited TiO₂.

Results: Their optical absorption, emission, charge carrier dynamics, and surface structural morphology are explained for the improved photocatalytic activity of M1@M2 loaded TiO₂ for the hydrogenation of certain organic compounds e.g., quinoline, crotonaldehyde, and 1,3-dinitrobenzene, etc. under UV/ visible light irradiation.

Conclusion: It was revealed that the use of bimetallic core@shell co-catalyst for hydrogenation of important industrial organics by M1@M2-TiO₂ nanocomposite demonstrates beneficial reactivity in many instances relative to conventional transition metal catalysts.

Cite this article as:

Pal Bonamali *, Monga Anila and Bathla Aadil , Superior Co-catalysis by Bimetallic Nanostructure for TiO₂ Photocatalysis, Journal of Photocatalysis 2021; 2 (1) . https://dx.doi.org/10.2174/2665976X01999201022194257