DEPOSITION AND CHARACTERIZATION OF ZNO THIN FILMS ON CARBON SUBSTRATE PRODUCED FROM BIOMASS

Yıl 2021, Cilt: 29 Sayı: 3, 431 - 439, 31.12.2021

Aynur Aşma Elif Yaman , Sinan Temel

https://doi.org/10.31796/ogummf.957064

Cited By: 2

Öz

In this study, zinc oxide (ZnO) nano-particles that is used in many application areas with high thermal and chemical stability, biocompatible, cheap and non-toxic properties; was deposited onto the porous carbon on bio-char produced from biomass. Rice husk was chosen as the biomass source. The results of the characterization studies applied before and after the carbonization process were presented in the study. Rice husk is a suitable raw material for the production of porous carbon material by carbonization method with its low moisture content (2.01 wt.%) and high volatile matter content (63.48 wt.%). It was observed that the surface area of the synthesized carbonaceous material was 79.63 m2/g and the average pore size was 5.07 nm. ZnO nano-particles were deposited on the carbon substrate using chemical bath storage technique. ZnO nano-particles characterized by scanning electron microscopy (SEM) and X-ray diffractometry (XRD). It was determined that they have crystalline structure and the surface morphology of all thin films are homogeneous and compact.

BİYOKÜTLEDEN ÜRETİLEN KARBON ALTLIK ÜZERİNDE ZNO NANO-PARÇACIKLARIN BİRİKTİRİLMESİ VE KARAKTERİZASYONU

Öz

Yapılan bu çalışmada, ısıl ve kimyasal kararlılığı yüksek, biyo-uyumlu, ucuz ve toksik olmayan özellikleri ile pek çok uygulama alanında kullanılan çinko oksit (ZnO) nano-çiçekler; gözenekli karbon altlık olarak sürdürülebilir bir kaynak olan biyokütleden üretilen biyo-char üzerinde biriktirilmiştir. Biyokütle kaynağı olarak pirinç kabuğu seçilmiştir. Karbonizasyon süreci öncesinde ve sonrasında yapılan karakterizasyon çalışmalarının sonuçları çalışma içerisinde sunulmuştur. Pirinç kabuğunun sahip olduğu düşük nem miktarı (kütlece %2,01) ve yüksek uçucu madde miktarı (kütlece %63,48), bu hammaddenin karbonizasyon metodu ile gözenekli karbon malzeme üretimi için uygun olduğunu göstermektedir. Sentezlenen karbonlu malzemenin yüzey alanının 79,627 g/m2 ve gözenek boyutunun ise 5,07 nm olduğu görülmüştür. ZnO ince filmler, karbon altlık üzerine kimyasal banyo depolama tekniği kullanılarak biriktirilmiştir. Taramalı elektron mikroskobu (SEM) ve X-ışını difraktometresi (XRD) ile karakterize edilen ZnO nano-çiçeklerin kristal yapıya sahip olduğu belirlenmiştir ve tüm ince filmlerin yüzey morfolojileri ise homojen ve kompakttır.

Anahtar Kelimeler

Biyokütle, karbonizasyon, kimyasal banyo depolama, ZnO

Kaynakça

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