Clay‐Supported Fe[Fe(CN) 5 NO] as an Effective, Viable Catalyst in the Sono‐Photodegradation of Methyl Violet 10B

Abstract

Abstract This study aimed to develop a cost‐effective and eco‐friendly catalyst for removing persistent dyes from water. This was achieved by utilizing the photocatalytic properties of Fe[Fe(CN) 5 NO], which was immobilized on a phyllosilicate clay (FeNP@Kao). This catalyst was successfully obtained by the in situ reaction between Fe(II) ions and nitroprusside anions [Fe(CN) 5 NO] on the surface of kaolin. The obtained material was subsequently characterized by FTIR spectrometry, X‐ray diffraction, scanning electron microscopy, UV–vis spectroscopy, and BET Analysis. The experimental analysis shows that the Fe[Fe(CN) 5 NO] the complex is well infiltrated on the surface of the used clay. The sono‐photodegradation trials were optimized under the effect of four operating factors, including FeNP@Kao amount (0.25–1.50) gL −1 , solution pH(1–6), H 2 O 2 quantity (0–0.075) mol L 1 , and methyl violet 10B initial concentration (5–50) mgL −1 . The attained results illustrate that methyl violet 10B elimination increased with the rise of the H 2 O 2 concentration and the catalyst dose. The optimum conditions determined at room temperature were C MV10B ═15 mgL −1 , m FeNP@K ═1 gL −1 , = 0.060 mol L −1 , and pH = 3 with a total removal efficiency (100%) achieved after 60 min of reaction. The results showed that the FeNP@Kao is an outstanding visible‐light‐driven catalyst material for the photodegradation of MV10B under visible‐light irradiation.