CuxZn(1-x)O Nanoparçacıklarıyla Dekore Edilmiş Kaolin Nanokompozitinin Sentezi, Karakterizasyonu ve Fotokatalitik Aktivitesi

Yıl 2020, , 369 - 383, 31.08.2020

Eda Keleş Güner , Bülent Çağlar

https://doi.org/10.18185/erzifbed.703223

Cited By: 2

Öz

Kaolin yüzeyine CuxZn(1-x)O nanoparçacıkları dekore edilerek kaolin-CuxZn(1-x)O nanokompoziti hazırlandı. Saf kaolinin, saf CuxZn(1-x)O nanoparçacıkları ve hazırlanan bu kaolin-CuxZn(1-x)O nanokompozitin fotokatalitik aktiviteleri UVA ışınları altında Rodamin B boyar maddesinin fotokatalitik bozunması incelenerek karşılaştırılmalı olarak değerlendirildi. Bütün numuneler SEM-EDX, XRD, FTIR, ve termik analiz (TG / DTG, DTA) teknikleri kullanılarak karakterize edildi. SEM-EDX ve XRD verileri saf CuxZn(1-x)O nanooksitlerin hekzagonal wurtzite yapısında kristallenen ZnO’in kristal örgüsünün içerisine bakır iyonlarının girmesiyle genişliği 100-250 nm arası çubuk ve içi boş tüp benzeri nanoyapılar şeklinde oluştuğunu göstermiştir. Kaolin-CuxZn(1-x)O nanokompozitinde bu metal oksit nanoyapıların aynı kristal ve morfolojide kaolinin tabakaları arasına sızmadan sadece kilin yüzeyinde dekore olduğu tespit edilmiştir. Kaolin ve CuxZn(1-x)O nanoparçacıkları arasındaki sinerjik etkiden ötürü en iyi fotokatalitik bozunma aktiviteye kaolin- CuxZn(1-x)O nanokompozitinin sahip olduğu ve bozunmanın yalancı birinci dereceden kinetik izlediği belirlendi. Ayrıca bu fotokatalitik bozunmaya ait optimum pH ve katalizör miktarı değerleri de tespit edildi.

Anahtar Kelimeler

Kaolin, CuxZn(1-x)O, fotokatalitik aktivite

Kaynakça

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