Formation of fluorescent carbon nanodots from kitchen wastes and their application for detection of Fe³⁺

Abstract

This work reports a scalable synthesis of water-dispersible fluorescent carbon nanodots based on the simple hydrothermal method (180 °C for 6 h) of kitchen wastes (grape peel for example). We discuss the feasibility of synthesis from kitchen wastes both experimentally and theoretically, and the as-prepared nanodots have high selectivity for Fe(3+) ions based on fluorescence quenching which is due to the complexes between nanodots and metal ions.

Facile preparation of high fluorescent carbon quantum dots from orange waste peels for nonlinear optical applications

“…Carbon dots are new promising carbonaceous materials that have attracted considerable attention in numerous research areas due to their unique physical properties . In the ever‐expanding field of nanomaterial research, researchers are exploring new carbon source materials from natural sources that are simple, of low cost with high performance, and with the possibility of green synthesis a highly desirable factor . Recently, reports have detailed that organic molecules with an extended delocalized π‐electron system possess perfect nonlinear optical values .…”

“…[1][2][3][4] In the ever-expanding field of nanomaterial research, researchers are exploring new carbon source materials from natural sources that are simple, of low cost with high performance, and with the possibility of green synthesis a highly desirable factor. [5][6][7][8][9][10] Recently, reports have detailed that organic molecules with an extended delocalized π-electron system possess perfect nonlinear optical values. [11] Among various nonlinear optical materials, 'green' carbon source CDs have shown the maximum nonlinear optical properties.…”

Green synthesis, biomedical and biotechnological applications of carbon and graphene quantum dots. A review

“…Various chemical precursors have been detected for generating carbon dots, including ammonium citrate , ethylene glycol (Jaiswal et al 2012), citric acid (Schneider et al 2017), ethylene diamine tetra acetic acid (EDTA) (Liu et al 2017a), phytic acid (Wang et al 2013d), phenylenediamine (Vedamalai et al 2014), thiourea (Wang et al 2016a), carbon nanotube (Shinde and Pillai 2012) and graphite (Joseph and Anappara 2017). Meanwhile, diverse green carbon precursors have been applied for the production of carbon dots including fruits, their juices and fruit peels (Mehta et al 2015), animal and animal-derived materials such as chicken egg (Zhang et al 2015c) and silkworm , vegetables and spices , waste kitchen materials like frying oil (Xu et al 2015) or waste paper (Wei et al 2014), plant leaves and derivatives ), among others. Additionally, graphite, nanodiamond, carbon nanotube and active-carbon can be applied as precursor for fabrication of carbon dots (Das et al 2018).…”

Discriminating Chemosensor for Detection of Fe3+ in Aqueous Media by Fluorescence Quenching Methodology

“…[1][2][3][4][5] The high intake or deficiency of metal ions consumed in the human body can cause the serious problem on the human health. It gained remarkable importance, in medical, environmental and biological applications.…”