Behavior of Bi2S3 under ultrasound irradiation for Rhodamine B dye degradation

Author(s)

Teodoro, Vinicius ^[1] ; Trench, Aline Barrios ^[1] ; da Trindade, Leticia Guerreiro ^[2] ; Jacomaci, Natalia ^[3] ; Beltran-Mir, Hector ^[4] ; Andres, Juan ^[5] ; Cordoncillo, Eloisa ^[4] ; Bettini, Jefferson ^[6] ; Longo, Elson ^[1]

Affiliation

^[1] Univ Fed Sao Carlos UFSCar, LIEC CDMF, Dept Chem, POB 676, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Estadual Paulista, Dept Chem, UNESP, POB 473, BR-17033360 Bauru, SP - Brazil

^[3] Sao Paulo State Univ, Inst Chem, UNESP, BR-14800060 Araraquara, SP - Brazil

^[4] Univ Jaume I UJI, Dept Quim Inorgan & Organ, Castellon de La Plana 12071 - Spain

^[5] Univ Jaume 1, Dept Analyt & Phys Chem, Castellon de La Plana 12071 - Spain

^[6] Brazilian Nanotechnol Natl Lab LNNano CNPEM, BR-13083970 Campinas, SP - Brazil

• Document type: Journal article
• Source: Chemical Physics Letters; v. 785, DEC 16 2021.
• Web of Science Citations: 0

Abstract

In this study, we have demonstrated that Bi2S3 semiconductor under ultrasound behaves as a piezoelectric material, facilitating the transfer of electrons and holes, thus enabling the formation of oxidizing agents. In the presence of light, Bi2S3 showed no photocatalytic activity, resulting in Rhodamine B (RhB) degradation of 2.5%, while the ultrasound application led to a degradation of 40.6%. Herein, we propose a possible mechanism to explain this behavior based on the local charge polarization in {[}BiS7] clusters. (AU)

• FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
• Grantee: Elson Longo da Silva
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC