Anuar Muhammad Fahmi, Fen Yap Wing, Azizan Muhammad Zakwan, Rahmat Fida'i, Mohd Zaid Mohd Hafiz, Khaidir Rahayu Emilia Mohamed, Omar Nur Alia Sheh
Department of Physics, Faculty of Science, Universiti Putra Malaysia, UPM, Serdang 43400, Selangor, Malaysia.
Functional Devices Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, UPM, Serdang 43400, Selangor, Malaysia.
Materials (Basel). 2021 Feb 28;14(5):1141. doi: 10.3390/ma14051141.
Arecanut husk (AH) was selected as a material for silica replacement in the synthesis process of glass-ceramics zinc silicate and also the fact that it has no traditional use and often being dumped and results in environmental issues. The process of pyrolysis was carried out at temperature 700 °C and above based on thermogravimetric analysis to produce arecanut husk ash (AHA). The average purity of the silica content in AHA ranged from 29.17% to 45.43%. Furthermore, zinc oxide was introduced to AHA and zinc silicate started to form at sintering temperature 700 °C and showed increased diffraction intensity upon higher sintering temperature of 600 °C to 1000 °C based on X-ray diffraction (XRD) analysis. The grain sizes of the zinc silicate increased from 1011 nm to 3518 nm based on the morphological studies carried out by field emission scanning electron microscopy (FESEM). In addition, the optical band gap of the sample was measured to be in the range from 2.410 eV to 2.697 eV after sintering temperature. From the data, it is believed that a cleaner production of low-cost zinc silicate can be achieved by using arecanut husk and have the potential to be used as phosphors materials.
槟榔壳（AH）被选作硅酸锌微晶玻璃合成过程中替代二氧化硅的材料，此外，它没有传统用途，常被丢弃，会导致环境问题。基于热重分析，在700℃及以上的温度下进行热解过程，以生产槟榔壳灰（AHA）。AHA中二氧化硅含量的平均纯度在29.17%至45.43%之间。此外，将氧化锌引入AHA中，基于X射线衍射（XRD）分析，硅酸锌在700℃的烧结温度下开始形成，并且在600℃至1000℃的更高烧结温度下衍射强度增加。基于场发射扫描电子显微镜（FESEM）进行的形态学研究，硅酸锌的晶粒尺寸从1011nm增加到3518nm。此外，烧结温度后样品的光学带隙测量值在2.410eV至2.697eV范围内。从这些数据来看，相信通过使用槟榔壳可以实现低成本硅酸锌的清洁生产，并且有潜力用作磷光体材料。
