Aerogels are gaining interest from researchers for various applications in different disciplines due to their unique characteristics, such as high porosity, low density and vast surface area. Because of their outstanding physical and chemical properties with adjustable surface chemistry, aerogels have various applications, including supercapacitors, drug delivery, thermal insulation, etc. Due to their high porosity and surface area, aerogels are applicable for the removal of organic and inorganic pollutants, which could have detrimental impacts on both human health and the environment. Numerous reviews of aerogel preparations and applications have been published. However, there has not been an organized approach to aerogel synthesis methods, types and applications with the mechanisms in their respective applications. The aerogels' pollution removal methods and composite fabrications are thoroughly described. A summary of the diverse uses and exciting prospects of aerogels in environmental pollution control is provided. Additionally, how contaminants and porous nanoparticles interact are examined. More significantly, novel designs are suggested for the production of advanced aerogels. The mechanisms of the porous materials in their applications are also meaningfully guided by this review, which helps to design and produce advanced porous materials.

Blending wax with polyethylene (PE) has garnered significant attention in recent years due to its potential to enhance processing capabilities of polyethylene-based products. The miscibility of polyethylene and low molecular mass wax blends is a critical factor influencing various industrial applications. In this study, the theoretical framework of the miscibility of polyethylene/wax blends is discussed in terms of thermodynamic principles. The state-of-the-art of miscibility of polyethylene/wax blends is comprehensively examined, focusing on their thermophysical and rheological properties. It is shown that thermophysical properties assessed by differential scanning calorimetry and dynamic mechanical analysis can provide insights into thermal transitions affected by blend composition. Furthermore, the rheological properties of blends can provide insights into their microstructure, phase behaviour, and interaction between components. Literature search of the influence of wax compositions and temperature on the polyethene/wax compatibility was shown to be inconsistent. Also, studies on the miscibility of paraffin and Fischer-Tropsch (F-T) wax/polyethene blends is limited. However, the review suggests full miscibility of low molecular mass waxes and polyethylene in the melt and partial co-crystallisation in the solid state.