Mikro Boyutlu ZnO Parçacıklarının Optik ve Fotonik Özelliklerinin Seryum Katkılama ile İyileştirilmesi

Year 2022, , 1139 - 1148, 27.10.2022

Ramazan Dalmış

https://doi.org/10.35414/akufemubid.1122241

Abstract

Artan nüfus ve çevresel nedenlerle su kıtlığı günümüzün en acil sorunlarından biridir. Bu durumu çözmek için insanlığın yapabileceği en önemli şey kirli suları geri dönüştürmektir. ZnO, benzersiz özellikleri nedeniyle fotokatalitik proses uygulamaları için yaygın olarak kullanılmaktadır. Sol-jel yöntemiyle üretilen mikron boyutlu ZnO partiküllerinin, nadir toprak elementi olan Seryum katkı maddesi katkılanarak fotokatalitik özelliklerinin iyileştirilmesi amaçlanmıştır. Ce katkı oranının etkisini incelemek için yapısal, morfolojik, optik ve fotokatalitik özellikler karakterize edildi. Artan tane boyutu, Ce4+'nın ZnO kafesine verimli bir şekilde entegre olduğunu gösterdi. Wurtzite ZnO kafesine Ce katkısı, mikro boyutlu ZnO parçacıklarının hem emisyonunu hem de fotokatalitik verimliliğini iyileştirdi. Ayrıca fotokatalitik verim üzerinde Ce doping işleminin tane boyutundan daha etkili olduğu ortaya çıkmıştır.

Keywords

ZnO mikro-parçacık, Ce katkılama, Fotolüminesans, Fotokatalitik, Karakterizasyon

Enhancement of Optical and Photonic Properties of the Micro-sized ZnO Particles by Cerium Doping

Abstract

Water shortage is one of the most urgent issues today, owing to rising population and environmental reasons. The most significant thing that humanity can do to solve this situation is to recycle waste or contaminated water. ZnO has been widely employed for photocatalytic applications due to its unique features. It was aimed to improve the photocatalytic properties of the micron-sized ZnO particles by doping with Cerium dopant, which is a rare earth element and used in many photocatalytic studies. Structural, morphological, optical, and photocatalytic properties were characterized to examine the effect of the Ce dopant ratio. The increased grain size demonstrated that Ce4+ was efficiently integrated into the ZnO lattice. Ce doping into the Wurtzite ZnO lattice improved both the emission and photocatalytic efficiency of the micro-sized ZnO particles. Additionally, it was revealed that the Ce doping procedure is more effective than grain size on the photocatalytic efficiency.

Keywords

ZnO micro-particle, Ce dopant, Photoluminescence, Photocatalytic, Characterization

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