4.6 Article

Eco-friendly in-situ synthesis of monolithic NiFe layered double hydroxide for catalytic decomposition of ozone

Journal

CATALYSIS COMMUNICATIONS
Volume 177, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.catcom.2023.106635

Keywords

Ozone decomposition; Monolithic catalyst; NiFe layered double hydroxide (NiFe-LDH); In-situ synthesis; Iron foam

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In this study, NiFe layered double hydroxide (NiFe-LDH) monolithic catalysts supported by metal foam were synthesized in-situ by a simple one-step hydrothermal method and applied for ozone elimination for the first time. NiFeLDH/IF (Iron Foam, IF) monolithic catalysts were successfully prepared without the use of ammonium fluoride (NH4F), thus avoiding the generation of wastewater containing fluorine. The optimized NiFe-LDH/IF monolithic catalyst exhibited ozone conversion rates of 91.5% and 85% after 6 and 168 hours, respectively, under harsh conditions, demonstrating promising potential for ozone pollution control.
Herein, NiFe layered double hydroxide (NiFe-LDH) monolithic catalysts self-supported by metal foam were synthetized in-situ by a simple one-step hydrothermal method, and were first used for ozone elimination. NiFeLDH/IF (Iron Foam, IF) monolithic catalysts were successfully prepared in the absence of ammonium fluoride (NH4F), avoiding the production of wastewater containing fluorine. The optimized NiFe-LDH/IF monolithic catalyst exhibited ozone conversion of 91.5% and 85% after 6 and 168 h, respectively, under harsh conditions, showing promising potential for ozone pollution control. This study provided a convenient and eco-friendly method for the preparation of monolithic catalyst.

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