A Comprehensive Review of Graphitic Carbon Nitride (g-CN)-Metal Oxide-Based Nanocomposites: Potential for Photocatalysis and Sensing.

g-CN has drawn lots of attention due to its photocatalytic activity, low-cost and facile synthesis, and interesting layered structure. However, to improve some of the properties of g-CN, such as photochemical stability, electrical band structure, and to decrease charge recombination rate, and towards effective light-harvesting, g-CN-metal oxide-based heterojunctions have been introduced. In this review, we initially discussed the preparation, modification, and physical properties of the g-CN and then, we discussed the combination of g-CN with various metal oxides such as TiO, ZnO, FeO, FeO, FeO, WO, SnO, SnO, etc.

Recent advances in the modification of carbon-based quantum dots for biomedical applications.

Carbon-based quantum dots (CDs) are mainly divided into two sub-groups; carbon quantum dots (CQDs) and graphene quantum dots (GQDs), which exhibit outstanding photoluminescence (PL) properties, low toxicity, superior biocompatibility and facile functionalization. Regarding these features, they have been promising candidates for biomedical science and engineering applications. In this work, we reviewed the efforts made to modify these zero-dimensional nano-materials to obtain the best properties for bio-imaging, drug and gene delivery, cancer therapy, and bio-sensor applications.

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In this research, a facile, two-step synthesis of FeO-L-graphene quantum dots (GQDs) nanocomposite is reported. This synthesis method comprises the preparation of GQDs via hydrothermal route, which should be conjugated to the L functionalized core-shell magnetic structure with the core of about 7.5-nm iron oxide nanoparticle and 3.