NanoBioSensors: From Electrochemical Sensors Improvement to Theranostic Applications

Abstract

This chapter comments on the advantages of nanobiosensors using nanocrystals in improving electrochemical sensors’ response and their use as theragnostic tools in biomedical applications. The use of nanomaterials to modify electrochemical sensors’ surfaces to increase these devices’ sensitivity and their bio-functionality enables high-quality nanotechnological platforms. Thus, graphene nanostructures and CdSe/CdS magic-sized quantum dots (MSQDs) were shown to improve biosensor’s sensitivity. In addition, the use of CdSe/CdS MSQDs and cobalt ferrite nanocrystals (NCs) as potential tools for drug delivery systems and biocompatible titanium dioxide NCs in osseointegration processes and their bio-location are also demonstrated. So, this chapter shows some impressive results on which the group has been working regarding the applications of nanocrystals to electrochemical sensors and theranostic applications.

Revolutionizing Therapy: Nanomaterials in Liposomes Redefine the Future of Medicinal Drugs

“…Innovative drug delivery systems utilizing liposomes and nanocrystals also stand out in their potential applications in theranostics (therapy and diagnosis) [34]. Liposomes containing CdSe/CdS magic-sized quantum dots (MSQDs) have the potential to serve as stable fluorescent reporters and, consequently, can be explored as an innovative luminescent tool for drug delivery.…”

“…Liposomes containing CdSe/CdS magic-sized quantum dots (MSQDs) have the potential to serve as stable fluorescent reporters and, consequently, can be explored as an innovative luminescent tool for drug delivery. The co-encapsulation of MSQDs within liposomes enables precise monitoring of their spatial distribution through luminescent emission while facilitating targeted delivery of drugs to desired sites [34].…”

MoO3/ironepinelium catalyst supported on ornamental rock residues with potential application in biodiesel production

“…Regarding the reuse of the CS2 catalyst, which best achieved biodiesel yield, the researchers realized that the cubic material could be easily separated from the final reaction by means of a magnet, due to the system having a high content of ferromagnetic properties (17.91 meu/g ), and which after the fifth recycling cycle showed continuous loss of activity, gradually reducing from 93.3% to 89.3%, attributed to the loss of some active sites on the CS2 surface. Silva et al,[43], in this research synthesized the magnetic heterogeneous catalyst ZnO-Ni0.5Zn0.5Fe2O4.Fe2O3 through the synthesis of combustion reaction in pilot scale to be applied in the conversion of residual frying oil into biodiesel through the simultaneous transesterification/esterification (TES) reactions. To make the catalytic system ZnO-Ni0.5Zn0.5Fe2O4.Fe2O3 Silva and participants previously prepared a precursor stoichiometric solution based on the total valency of oxidizing agents and reducing reagents using the concept of chemistry of propellants and explosives cited by Jain et al, [44].…”