Enhancing Visible Light Photocatalytic Degradation of Bisphenol A Using BiOI/Bi2MoO6 Heterostructures

Magaly Y. Nava Núñez, Moisés Ávila Rehlaender, Azael Martínez-de la Cruz, Arturo Susarrey-Arce, Francisco Mherande Cuevas-Muñiz, Margarita Sanchez-Dominguez, Tania E. Lara-Ceniceros, José Bonilla-Cruz, Alejandro Arizpe Zapata, Patricia Cerda Hurtado, Michael Pérez-Rodríguez, Aldo Ramirez, Lucy T. González*, Francisco E. Longoria-Rodríguez*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)
19 Downloads (Pure)

Abstract

With the growing population, access to clean water is one of the 21st-century world’s challenges. For this reason, different strategies to reduce pollutants in water using renewable energy sources should be exploited. Photocatalysts with extended visible light harvesting are an interesting route to degrade harmful molecules utilized in plastics, as is the case of Bisphenol A (BPA). This work uses a microwave-assisted route for the synthesis of two photocatalysts (BiOI and Bi2MoO6). Then, BiOI/Bi2MoO6 heterostructures of varied ratios were produced using the same synthetic routes. The BiOI/Bi2MoO6 with a flower-like shape exhibited high photocatalytic activity for BPA degradation compared to the individual BiOI and Bi2MoO6. The high photocatalytic activity was attributed to the matching electronic band structures and the interfacial contact between BiOI and Bi2MoO6, which could enhance the separation of photo-generated charges. Electrochemical, optical, structural, and chemical characterization demonstrated that it forms a BiOI/Bi2MoO6 p-n heterojunction. The free radical scavenging studies showed that superoxide radicals (O2•−) and holes (h+) were the main reactive species, while hydroxyl radical (•OH) generation was negligible during the photocatalytic degradation of BPA. The results can potentiate the application of the microwave synthesis of photocatalytic materials.
Original languageEnglish
Article number1503
Number of pages17
JournalNanomaterials
Volume13
Issue number9
Early online date28 Apr 2023
DOIs
Publication statusPublished - May 2023

Keywords

  • BiOI
  • Bi2MoO6
  • BiOI/Bi2MoO6 heterostructures
  • photocatalysis
  • Bisphenol A

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