Chitosan and graphene oxide-based nanocomposites for water purification and medical applications: A review

Abstract

Chitosan (CS) is a natural polysaccharide isolated from insects, molluscs, and fungi. The specific properties of chitosan can be enhanced using physicochemical processes. The composites prepared using CS and graphene oxide (GO) contain active functional groups such as epoxide, carboxyl, and hydroxyl, which possess excellent biocompatibility, high adsorption capacity, and biodegradability. Their low cost and ease of scale-up make them employable for multiple applications in water-treatment plants, electronics, solar cells, and pharmaceuticals. This review provides an overview of sources, types, and properties of chitin, chitosan, and graphene oxide. The use of these composites for the preparation of anti-microbial drugs has been discussed here. The article also explores the applicability of such composites for removal of heavy metals (lead, copper, chromium, cobalt, mercury, etc.), dyes (methylene blue and other reactive dyes), and organic and inorganic contaminants (ofloxacin, naphthanol, phenol, and oil, etc.). The article highlights various knowledge gaps in the field and the scope of future work.

Bamboo as a source for value added products: Paving way to global circular economy

“…In hyperbilirubinemia patients, a high level of albumin is found in the blood, and it can act as a toxic substance (Hsieh et al 2007). During blood detoxification, chitosan-BC beads averted the probability of liberation of minute particles (Khandegar et al 2021;Suri et al 2021). A homogenous composition was formed between BC and chitosan.…”

“…The composite bead (surface area: 681 m 2 g −1 ) successfully adsorbed polar compound creatinine (15%) from the contaminated aqueous solution. (Caminos-Peruelo et al 2017;Khandegar et al 2021;Suri et al 2021).…”