Development And Characterization Of Transition Metal Doped Bivo4 Catalysts And Investigation Of Their Photocatalytic Activities
The aim of this project is total mineralization of organic pollutants found in waste waters or to convert them less harmful products with hybrid composite BiVO4 catalysts improved with the transition elements to be effective under UV and especially visible light in short reaction times.
For this purpose, pure BiVO4 catalysts by facile hydrothermal method, metal oxide doped (Fe2O3, Co3O4, NiO, CuO) catalysts via solid state dispersion method were prepared. During catalyst preparation stage, specific features of the catalysts and their percent of weight, pH of the solution, reaction time and temperature were considered. Moreover, some other parameters like light intensity, the amount of catalyst, amount of H2O2 and initial input concentration were considered for reaction kinetics. The optical and structural properties of catalysts were determined by XRD, BET, FT-IR, SEM, DRS and PL techniques.
The main intermediates in photocatalytic degradation were analyzed in high pressure liquid chromatography (HPLC) and gas chromatography-mass spectroscopy (GC-MS). The degradation reaction rates were calculated and the activities of catalysts were compared. A complete mineralization was obtained with 100% phenol degradation in 45 minutes by BiVO4-7CuO catalyst under natural sunlight.
ÖZPARLAK Nur
Danışman : Doç. Dr. Süheyla ÇEHRELİ
Anabilim Dalı : Kimya Mühendisliği
Programı : Temel İşlemler ve Termodinamik
Mezuniyet Yılı : 2014
Tez Savunma Jürisi : Doç. Dr. Süheyla ÇEHRELİ
Prof. Dr. Umur DRAMUR
Prof. Dr. Mehmet BİLGİN
Prof. Dr. İsmail İNCİ
Doç. Dr. Şaziye ABDURRAHMANOĞLU
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