Üç Metalli CuFeV-LDH Yapısı Sentezi, Karakterizasyonu ve Metilen Mavisi Giderimi Üzerine Etkisi

Öz

LDH yapıları, esnek ve uyarlanabilir özelliklere sahip olması sayesinde belirli bir uygulama için modifiye edilebilmektedir. Bu çalışmada, CuFeV-LDH yapısı sentezlenmiş ve XRD, FTIR, FE-SEM ve BET gibi analiz yöntemleri ile karakterize edilerek yapısı ortaya koyulmuştur. XRD sonucu malzemenin yüksek kristal yapıya sahip olduğunu göstermiştir. FE-SEM sonucuna göre yapının nano boyutlu küresel taneciklerden oluştuğu ve elementlerin homojen dağılıma sahip olduğu belirlenmiştir. BET sonucuna göre ise CuFeV-LDH’nin yüzey alanı 238.59 m² g⁻¹ olarak bulunmuştur. Üretilen bu malzeme kullanılarak Fenton benzeri katalitik oksidasyon yöntemi ile metilen mavisi giderim performansı incelenmiştir. Metilen mavisi giderim deneyleri üç farklı katalizör miktarı (0.5, 1, 1.5 g/L) varlığında gerçekleştirilmiştir. Katalizör miktarı için optimum değer olarak 1g/L belirlenmiş ve kinetik çalışmalar bu değer sabit tutularak gerçekleştirilmiştir. Metilen mavisi giderim performansı 45oC de, 1g/L katalizör ve 100 mM H2O2 varlığında % 85’e ulaşmıştır. Kinetik çalışma analizleri sonucu, reaksiyonun birinci ve ikinci dereceden kinetik modele uyduğunu göstermiştir. CuFeV-LDH katalizörünün Fenton benzeri sistemler için önemli bir potansiyele sahip olduğunu göstermektedir.

Anahtar Kelimeler

• LDH
• Metilen mavisi
• Katalizör
• Karakterizasyon

Synthesis and Characterization of the Trimetallic CuFeV-LDH Structure and Its Effect on Methylene Blue Removal

Abstract

LDH structures, due to their flexible and adaptable properties, can be modified for a specific application. In this study, a CuFeV-LDH structure was synthesized and characterized using analytical methods such as XRD, FTIR, FE-SEM, and BET. The XRD result showed that the material has a high crystalline structure. According to the FE-SEM result, it was determined that the structure consists of nano-sized spherical particles and that the elements have a homogeneous distribution. According to the BET result, the surface area of CuFeV-LDH was found to be 238.59 m² g⁻¹. The methylene blue removal performance of this produced material was investigated using the Fenton-like catalytic oxidation method. Methylene blue removal experiments were carried out in the presence of three different catalyst amounts (0.5, 1, 1.5 g/L). The optimum value for the catalyst amount was determined as 1 g/L, and kinetic studies were performed keeping this value constant. Methylene blue removal performance reached 85% at 45°C, with 1 g/L catalyst and 100 mM H2O2. Kinetic analysis showed that the reaction followed a first and second-order kinetic models. This indicates that the CuFeV-LDH catalyst has significant potential for Fenton-like systems.

Keywords

• LDH
• Methylene blue
• Catalyst
• Characterization

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