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Fluorine-functionalized reduced graphene oxide-TiO2 nanocomposites: A new application approach for efficient photocatalytic disinfection and algicidal effect by Eunhoo Jeong; Seokho Jung; Hyun-Sang Shin is a Environmental Science article available to read on EtoBox.

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Using surface functionalization and related applications to 2D materials as innovative solutions to environmental pollution has gained considerable attention among researchers. Fluorinated graphene has derivative-based synergistic components with high thermal and chemical stability because of its structure and bonding. Fluorine-functionalized reduced graphene oxide (rFGO-TiO2) demonstrated enhanced hydrophilicity and wettability, highly efficient photocatalytic disinfection, and an algicidal effect. This study presents the hydrothermal synthesis of rFGO-TiO2 to realize antibacterial properties with high stability, which was conducted against the gram-negative bacteria Escherichia coli. To optimize antibacterial performance, the effects of multiple synthetic conditions were investigated. The antibacterial performance was optimized at an rFGO content of 1 wt%, hydrothermal temperature of 200 °C, and hydrothermal time of 1 h. The rFGO–TiO2 composite demonstrated an antibacterial efficiency of 5.76 log under ultraviolet A irradiation for 10 min and around 2 log under visible light. In the absence of light, rFGO–TiO2 took 6 h to reach an antibacterial efficiency of 6 log. Increasing the

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Author

Eunhoo Jeong; Seokho Jung; Hyun-Sang Shin

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Environmental Science (Physical Sciences)