title: Size-specific imprinted polymer embedded carbon nanodots modified magnetic nanoparticle for specific recognition of titanium nanoparticle: The round versus round.
abstract: Like the two sides of a coin, any new invention or discovery also possess their two faces. Similarly, while nanomaterials were identified as a boon in several fields like industrial, medicinal or agriculture; some of them have been also validated as a risk to the environment and living organisms. In this report, we addressed an efficient optical method for the detection of popularly used titanium dioxide nanoparticle (TiO2) by a size-specific imprinted polymer embedded heteroatom-doped carbon nanodots (CNDs) decorated at the surface of the water-soluble magnetic nanoparticle. The CNDs were prepared by an economic and eco-friendly one-step hydrothermal method using a series of Brassicaceae family members (i.e. radish, cabbage, broccoli, and cauliflower). The as prepared CNDs shows very good production (12.8%) and quantum yields (40.7%). The size-specific imprinted polymer is biocompatible and biodegradable in nature and was able to detect the TiO2 nanoparticles with a high selectivity i.e. limit of detection (LOD)=6.88ngL(-1) (S/N=3) and remove the nanoparticle very efficiently. Furthermore, the method was successfully applied for the detection of TiO2 nanoparticles in wastewater, human sera, and cosmetic samples.
authors.affiliation: Department of Applied Chemistry, Indian School of Mines, Dhanbad, Jharkhand, 826 004 India.
authors.forename: Santanu
authors.initials: S
authors.lastname: Patra
authors.affiliation: Department of Applied Chemistry, Indian School of Mines, Dhanbad, Jharkhand, 826 004 India.
authors.forename: Raksha
authors.initials: R
authors.lastname: Choudhary
authors.affiliation: Department of Applied Chemistry, Indian School of Mines, Dhanbad, Jharkhand, 826 004 India.
authors.forename: Ekta
authors.initials: E
authors.lastname: Roy
authors.affiliation: Department of Applied Chemistry, Indian School of Mines, Dhanbad, Jharkhand, 826 004 India. Electronic address: rshmmadhuri@gmail.com.
authors.forename: Rashmi
authors.initials: R
authors.lastname: Madhuri
authors.affiliation: Functional Nanomaterials Research Laboratory, Department of Applied Physics, Indian School of Mines, Dhanbad, Jharkhand, 826 004 India.
authors.forename: Prashant K
authors.initials: PK
authors.lastname: Sharma
mesh_terms: D002244:Carbon / Q000737:chemistry; D003124:Colorimetry / Q000379:methods; D004785:Environmental Pollutants / Q000032:analysis*; D008163:Luminescent Measurements / Q000379:methods*; D058185:Magnetite Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D054802:Molecular Imprinting / Q000379:methods*; D010316:Particle Size; D011108:Polymers / Q000737:chemistry; D014025:Titanium / Q000032:analysis*
chemical_list: D004785:Environmental Pollutants; D058185:Magnetite Nanoparticles; D011108:Polymers; C009495:titanium dioxide; D002244:Carbon; D014025:Titanium
keywords: Carbon nanodots; Magnetic nanoparticle; Separation and detection; Size-specific polymer; TiO(2) nanoparticle