Author(s): Lacerda, Jorge A.S. ; Macedo, Allan M. ; Teixeira, Rodolfo I. ; Simões, Grazieli ; Ribeiro, Emerson S. [UNESP] ; Forero, Josué S.B. ; Corrêa, Rodrigo J. [UNESP]
Date: 2020
Persistent ID: http://hdl.handle.net/11449/199874
Origin: Oasisbr
Subject(s): Ciprofloxacin; Methylene blue; Photodegradation; Reusable catalyst; TiO2
Made available in DSpace on 2020-12-12T01:51:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-01-01. Added 1 bitstream(s) on 2021-07-15T15:07:22Z : No. of bitstreams: 1 S0103-50532020000100201.pdf: 802994 bytes, checksum: 3466162bdcdee7f288db8220b1b96ce2 (MD5)
This study shows a preparation and evaluation of a new non-expensive TiO2 based photocatalyst built over sand grains surfaces as an alternative green technology for water treatment. The semiconductor covalently bonded to the silica sand grains (sand@TiO2) prepared by hydrolysis of isopropoxide orthotitane over sand grains, showed a high surface area 296 m2 g-1 and a high reaction rate for methylene blue (MB) photodegradation (0.064 min-1), on steady state condition by using 3 g of sand@TiO2 and an MB solution (20 mL, 3 × 10-5 mol L-1) or ciprofloxacin hydrochloride (CIP) solution (20 mL, 1.9 × 10-3 mol L-1). Under UV irradiation with a medium pressure Hg lamp, the total MB removal reached 70% after 7 min and 45% for CIP in 60 min. Further, the photocatalyst showed to be a promising reusable material for removal of ciprofloxacin hydrochloride antibiotic (CIP) on wastewater. This new material appears as a new promising low cost and low impact reusable catalyst for water treatment.
Centro de Pesquisas e Desenvolvimento Leopoldo Américo Miguez de Mello (CENPES) Petróleo Brasileiro S.A. (PETROBRAS)
Instituto de Química Universidade Federal do Rio de Janeiro (UFRJ)
Instituto Nacional de Tecnologias Alternativas para Detecção Avaliação Toxicológica e Remoção de Micropoluentes e Radioativos (INCT-DATREM) Instituto de Química Universidade Estadual Paulista (Unesp), CP 355
Instituto Nacional de Tecnologias Alternativas para Detecção Avaliação Toxicológica e Remoção de Micropoluentes e Radioativos (INCT-DATREM) Instituto de Química Universidade Estadual Paulista (Unesp), CP 355
