Institute of Nano Electronic Engineering, Universiti Malaysia Perlis, 01000, Kangar, Perlis, Malaysia.
School of Bioprocess Engineering, Universiti Malaysia Perlis, 02600, Arau, Perlis, Malaysia.
Sci Rep. 2020 Feb 25;10(1):3351. doi: 10.1038/s41598-020-60208-x.
An incredible amount of joss fly ash is produced from the burning of Chinese holy joss paper; thus, an excellent method of recycling joss fly ash waste to extract aluminosilicate nanocomposites is explored. The present research aims to introduce a novel method to recycle joss fly ash through a simple and straightforward experimental procedure involving acidic and alkaline treatments. The synthesized aluminosilicate nanocomposite was characterized to justify its structural and physiochemical characteristics. A morphological analysis was performed with field-emission transmission electron microscopy, and scanning electron microscopy revealed the size of the aluminosilicate nanocomposite to be ~25 nm, while also confirming a uniformly spherical-shaped nanostructure. The elemental composition was measured by energy dispersive spectroscopy and revealed the Si to Al ratio to be 13.24 to 7.96, showing the high purity of the extracted nanocomposite. The roughness and particle distribution were analyzed using atomic force microscopy and a zeta analysis. X-ray diffraction patterns showed a synthesis of faceted and cubic aluminosilicate crystals in the nanocomposites. The presence of silica and aluminum was further proven by X-ray photoelectron spectroscopy, and the functional groups were recognized through Fourier transform infrared spectroscopy. The thermal capacity of the nanocomposite was examined by a thermogravimetric analysis. In addition, the research suggested the promising application of aluminosilicate nanocomposites as drug carriers. The above was justified by an enzyme-linked apta-sorbent assay, which claimed that the limit of the aptasensing aluminosilicate-conjugated ampicillin was two-fold higher than that in the absence of the nanocomposite. The drug delivery property was further justified through an antibacterial analysis against Escherichia coli (gram-negative) and Bacillus subtilis (gram-positive).
燃烧中国祭祀用纸会产生大量的祭祀飞灰；因此，探索了一种极好的回收利用祭祀飞灰废物以提取硅酸铝纳米复合材料的方法。本研究旨在通过涉及酸堿处理的简单实验程序，介绍一种回收祭祀飞灰的新方法。合成的硅酸铝纳米复合材料进行了特征化，以证明其结构和物理化学特性。用场发射透射电子显微镜进行了形态分析，扫描电子显微镜显示硅酸铝纳米复合材料的尺寸约为 25nm，同时还证实了其均匀的球形纳米结构。通过能谱分析测量了元素组成，显示 Si 与 Al 的比例为 13.24 比 7.96，表明提取的纳米复合材料具有高纯度。使用原子力显微镜和 zeta 分析对粗糙度和颗粒分布进行了分析。X 射线衍射图谱显示纳米复合材料中存在有面和立方的硅酸铝晶体合成。X 射线光电子能谱进一步证明了二氧化硅和铝的存在，傅里叶变换红外光谱识别了官能团。通过热重分析检查了纳米复合材料的热容。此外，研究还提出了硅酸铝纳米复合材料作为药物载体的有前途的应用。通过酶联适体吸附分析证明了这一点，该分析声称，带有适体的硅酸铝-氨苄西林的感测极限比没有纳米复合材料时高两倍。通过对大肠杆菌（革兰氏阴性）和枯草芽孢杆菌（革兰氏阳性）的抗菌分析进一步证明了其药物传递性能。
