Exploring the high activity of hierarchical copper oxide nanomaterials: Unveiling the influence of reduced size and enhanced surface area
Soumita Sarkar, Soumalya Banerjee, Sk Afsar Ali, Arabinda Karmakar, Astam K. Patra
Abstract
The development of 3D hierarchical architectures composed of nanometer-sized primary building blocks holds great promise for a wide range of applications. Here, we present a simple synthesis method for hierarchical CuO nanomaterials. HRTEM images revealed that the CuO nanoparticles had a diameter of 4–6 nm and were aggregated to form a hierarchical rod-like morphology. Nitrogen sorption isotherm indicated that the samples possessed high surface areas (125–190 m2/g). The obtained CuO nanomaterials demonstrated remarkable catalytic activity in the reduction of methyl orange, methyl red, and 4-nitrophenol. Furthermore, the CuO nanomaterials exhibited excellent recycling ability, making them highly favorable and efficient catalysts.