Prospects of Rice Husk-Derived Nanosilica

Abstract

Silica is regarded as a significant inorganic material widely employed for various purposes. The rapid advancement of the method of extracting silica from plant matter has led to the substantial application of silica in industry. One of the most essential plants in the world that provides humans with carbohydrates is rice. One of the primary agricultural wastes that contains significant amounts of silicate is rice husk (RH). An overview of thermal and chemical approaches for producing nanosilica from rice husks is provided in this paper. This paper examines RH silica’s sustainable uses, particularly in functional materials for the environment and biomedical. Regarding environmental concerns, RH-silica materials can be employed in integrated processes, adsorption and catalysis to purify gas and decontaminate wastewater. RH-silica compounds are used in biosensing and bioimaging in the biomedical field. To summarize, high-silica biomass has the potential to serve as a cheap supply of precursors for the development of high-value silicon and silica compounds that may find use in many applications.