Hierarchically nanostructured ZnO with enhanced photocatalytic activity

Title

Hierarchically nanostructured ZnO with enhanced photocatalytic activity

Creator

Pinheiro D.; Jose A.; Bharadwaj N.R.; Jaleel U.C.J.R.; Sunaja Devi K.R.

Description

Hierarchical nanostructures of ZnO are integrated architectures comprising well-ordered nanoscale subunits and excellent photocatalytic properties. In this study, synthesis of ZnO nanoparticles using methods such as co-precipitation, hydrothermal, thermal decomposition, and electrochemical precipitation yielded microsphere, nanorod, pyramid, and nanopetal-like morphologies, respectively. The catalysts obtained were characterized using XRD, IR, SEM-EDX, UVDRS, TGA, PL, and Zeta potential analysis. The XRD spectra confirmed that all the different morphologies of ZnO have hexagonal wurtzite structures The photocatalytic activity of these nanostructures was determined using a dye degradation study on a model pollutant Methylene Blue (MB) under simulated visible light. The kinetic study of the dye degradation reveals that it obeys pseudo-first-order kinetics with a maximum rate constant of 0.01503 min-1. The nanorod structured ZnO particles prepared by the hydrothermal method showed the best catalytic activity. 2021 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.

Source

ECS Journal of Solid State Science and Technology, Vol-10, No. 7

Date

2021-01-01

Publisher

IOP Publishing Ltd

Coverage

Pinheiro D., Department of Chemistry, CHRIST (Deemed to Be University), Karnataka, Bangalore, 560029, India; Jose A., Department of Chemistry, CHRIST (Deemed to Be University), Karnataka, Bangalore, 560029, India; Bharadwaj N.R., Department of Chemistry, CHRIST (Deemed to Be University), Karnataka, Bangalore, 560029, India; Jaleel U.C.J.R., Department of Chemistry, CHRIST (Deemed to Be University), Karnataka, Bangalore, 560029, India; Sunaja Devi K.R., Department of Chemistry, CHRIST (Deemed to Be University), Karnataka, Bangalore, 560029, India

Rights

Restricted Access

Relation

ISSN: 21628769

Format

Online

Language

English

Type

Article

Identifier

https://doi.org/10.1149/2162-8777/ac0f13

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