Document Type : Research Paper
Centre for Chemical Engineering Studies, Universiti Teknologi MARA, Cawangan Pulau Pinang, 13500 Permatang Pauh, Pulau Pinang, Malaysia
Waste Management and Resource Recovery (WeResCue) Group, Centre for Chemical Engineering Studies, Universiti Teknologi MARA, Cawangan Pulau Pinang, 13500 Permatang Pauh, Pulau Pinang, Malaysia
EMZI-UiTM Nanoparticles Colloids & Interface Industrial Research Laboratory (NANO-CORE), Centre for Chemical Engineering Studies, Universiti Teknologi MARA, Cawangan Pulau Pinang, 13500 Permatang Pauh, Pulau Pinang, Malaysia
In recent decades, nanotechnology-based treatments have made significant strides. Compared to monometallic nanoparticles, bimetallic nanoparticles have gained a great deal of technological and scientific interest due to their superior properties in various applications, which include the treatment of infectious disorders. Bimetallic nanoparticles are created by combining two distinct metals. Among the several bimetallic nanoparticles, silver-silica (Ag/Si) composites hold the most promise for fixing this problem. Ag/Si composites can be manufactured in many shapes, sizes, and structures by supporting them on their organic or inorganic counterparts. The characteristics of Ag/Si composites are superior to those of bimetallic nanoparticles. There are numerous obstacles involved with the characterization of composite materials. Due to the nanomaterials' strong reactivity and high accessible surface area, they are typically unstable and susceptible to coarse agglomeration. It is advised that the surface of nanoparticles be modified to prevent aggregation and agglomeration. Nanomaterials' behavior may impact the physicochemical properties of aggregates. This study examines the parameters that influence the synthesis of Ag/Si under varying conditions, including the effect of initial concentration of metal precursor, reaction time, reaction temperature, and calcination temperature. Based on several prior studies, the properties of the produced Ag/Si composites were subsequently reviewed via transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron microscopy (XPS), energy dispersive X-ray (EDX), and Fourier transform infra-red (FTIR). The highlighted physicochemical properties are shape, crystallinity, and compositions. As a result of their decreased size and increased surface area, Ag/Si composites are widely utilized as catalysts. Drug delivery, water filtration, and catalysis are some of the applications of silver-silica nanocomposites.