Flower-like ZnO/ionic liquid composites: structure, morphology, and photocatalytic activity

Author(s)

da Trindade, Leticia G. ^{[1, 2]} ; Zanchet, Leticia ^[1] ; Trench, Aline B. ^[2] ; Souza, Josiane Carneiro ^[2] ; Carvalho, Maria H. ^[3] ; de Oliveira, Adilson J. A. ^[3] ; Pereira, Ernesto C. ^[2] ; Mazzo, Tatiana M. ^[4] ; Longo, Elson ^[2]

Affiliation

^[1] Univ Fed Rio Grande do Sul, Inst Chem, POB 15003, BR-91501970 Porto Alegre, RS - Brazil

^[2] Univ Fed Sao Carlos, LIEC, CDMF, Chem Dept, POB 676, BR-13560970 Sao Carlos, SP - Brazil

^[3] Univ Fed Sao Carlos, Phys Dept, POB 676, BR-13565905 Sao Carlos, SP - Brazil

^[4] Fed Univ Sao Paulo UNIFESP, Inst Marine Sci, POB 11070-100, Santos, SP - Brazil

• Document type: Journal article
• Source: IONICS; v. 25, n. 7, p. 3197-3210, JUL 2019.
• Web of Science Citations: 0

Abstract

Two ionic liquids (ILs) with different alkyl chains, 1-butyl-3-methylimidazolium chloride (BMI. Cl) and 1-hexadecyl-3methylimidazolium chloride (C16MI. Cl), were incorporated into ZnO particles using the microwave-assisted hydrothermal (MAH) method. The morphology and microstructure of ZnO and ZnO/ IL composites were characterized along with their photocatalytic effect for dye degradation. While the incorporation of ILs into the ZnO particles did not alter their morphology, it converted the shallow defects into deep defects. These changes improved Rhodamine B (RhB) photodegradation efficiency. The dye degradation reached 62% when ZnO/ C1640 was used, whereas it reached 30% when pure ZnO was used, during the same time interval. (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