title: Hexagonal cadmium oxide nanodisks: Efficient scaffold for cyanide ion sensing and photo-catalytic applications.
abstract: Herein, we report the large-scale low-temperature aqueous solution based synthesis of hexagonal-shaped cadmium oxide (CdO) nanodisks. The synthesized nanodisks were characterized in detail to investigate the morphological, structural, optical and compositional properties using various analytical tools. The detailed characterizations revealed that the synthesized CdO nanodisks are grown in high-density, possessing well-crystallinity with cubic crystal phase and exhibiting good optical properties. Further, the prepared CdO nanodisks were used as efficient scaffold for cyanide ion sensor and photocatalyst applications. A luminescent sensor for the determination of cyanide ion in aqueous solution was fabricated based on synthesized CdO nanodisks. The fabricated luminescent sensor exhibited an extremely low detection limit (~1.40μmolL(-1)) towards cyanide ion which is significantly lower than the maximum permitted value of cyanide ion by United States Environmental Protection Agency (EPA) for drinking water (7.69μmolL(-1)). The interference studies of the fabricated sensor also demonstrate excellent selectivity towards cyanide ions compared to other coexisting ions. As a photocatalyst, the synthesized CdO nanodisks exhibited high photodegradation (~99.7%) of toxic methyl orange dye just in 90min using 0.25g of CdO nanodisks.
authors.affiliation: Department of Chemistry, Himachal Pradesh University, Shimla 171005, India.
authors.forename: Pankaj
authors.initials: P
authors.lastname: Sharma
authors.affiliation: Department of Chemistry, Maharaja Agrasen University, Solan 174103, India.
authors.forename: Dilbag Singh
authors.initials: DS
authors.lastname: Rana
authors.affiliation: Department of Chemistry, Faculty of Sciences and Arts and Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran 11001, Saudi Arabia. Electronic address: ahmadumar786@gmail.com.
authors.forename: Ahmad
authors.initials: A
authors.lastname: Umar
authors.affiliation: Department of Chemistry, Himachal Pradesh University, Shimla 171005, India.
authors.forename: Ramesh
authors.initials: R
authors.lastname: Kumar
authors.affiliation: Department of Chemistry, Himachal Pradesh University, Shimla 171005, India. Electronic address: mohinderc11@gmail.com.
authors.forename: Mohinder Singh
authors.initials: MS
authors.lastname: Chauhan
authors.affiliation: Department of Chemistry, Himachal Pradesh University, Shimla 171005, India.
authors.forename: Suvarcha
authors.initials: S
authors.lastname: Chauhan
mesh_terms: D019187:Cadmium Compounds; D002384:Catalysis; D003486:Cyanides; D049329:Nanostructures; D010087:Oxides; D055668:Photochemical Processes
chemical_list: D019187:Cadmium Compounds; D003486:Cyanides; D010087:Oxides; C029663:cadmium oxide
keywords: CdO nanodisks; Cyanide ions; Methyl orange; Photocatalyst