Size-Controlled SrTiO3 Nanoparticles Photodecorated with Pd Cocatalysts for Photocatalytic Organic Dye Degradation

Authors

Mary O. Olagunju, University of Miami
Xavier Poole, University of Miami
Patricia Blackwelder, University of MiamiFollow
Melonie P. Thomas, University of Kentucky
Beth S. Guiton, University of Kentucky
Dharmendra Shukla, University of Miami
Joshua L. Cohn, University of Miami
Bapurao Surnar, University of Miami Leonard M. Miller School of Medicine
Shanta Dhar, University of Miami Leonard M. Miller School of Medicine
Elsayed M. Zahran, Ball State University
Leonidas G. Bachas, University of Miami
Marc R. Knecht, University of Miami

Document Type

Article

Publication Title

ACS Applied Nano Materials

ISSN

2574-0970

Publication Date

5-22-2020

Keywords

Pd, photocatalysis, size effects, srtio 3, surface decoration

Abstract

Herein we report an ultrasonic- and photobased synthetic approach for the production of size-selective SrTiO₃ nanomaterials that are surface-decorated with Pd nanoparticle cocatalysts for application as photocatalysts for organic dye degradation. Control over the final nanoparticle size was achieved through selection of both reagent concentrations and stoichiometries, allowing for the ability to generate structures with sizes between 50 and 155 nm. Pd nanoparticles were subsequently photochemically deposited onto the surface of the oxide materials to serve as cocatalysts for enhanced reactivity. The materials were fully characterized and then examined for their photocatalytic reactivity, where their overall catalytic properties were controlled by three factors: (i) composition, (ii) size, and (iii) particle surface charge. These studies demonstrate important information that correlates synthetic conditions to final material properties, providing approaches to generate materials with optimal reactivity. Such effects could likely be translated to additional systems for applications beyond photocatalysis, such as energy harvesting, plasmonics, sensing, etc.

DOI

10.1021/acsanm.0c01086

Volume

3

Issue

5

First Page

4904

Last Page

4912

NSUWorks Citation

Mary O. Olagunju, Xavier Poole, Patricia Blackwelder, Melonie P. Thomas, Beth S. Guiton, Dharmendra Shukla, Joshua L. Cohn, Bapurao Surnar, Shanta Dhar, Elsayed M. Zahran, Leonidas G. Bachas, and Marc R. Knecht. 2020. Size-Controlled SrTiO3 Nanoparticles Photodecorated with Pd Cocatalysts for Photocatalytic Organic Dye Degradation .ACS Applied Nano Materials , (5) : 4904 -4912. https://nsuworks.nova.edu/occ_facarticles/1156.