Influence of ammonium nitrate concentration on structural evolution and optical properties tuning of CdS nanoparticles synthesized by precipitation method

Bright red luminescence emission of macroporous honeycomb-like Eu3+ ion-doped ZnO nanoparticles developed by gel-combustion technique

“…Nanostructure such as CdS, SnO 2 , TiO 2 , ZnS, ZnO, etc. with particular morphologies has drawn growing attention in the latest years due to their technological applications and unique optical characteristics [1][2][3][4][5]. Zinc oxide (ZnO) is a versatility of the II-VI direct band gap semiconductor with a large 3.37 eV band gap with a large 60 meV excitonic binding energy [6][7][8][9].…”

Structural and Morphological Characterization of CuO Nanostructure Precipitated by Water-soluble Copper (II) Nitrate Hemi(pentahydrate) and NaOH as Reactants

“…No peaks corresponding to impurities or other compounds such as Cu(OH)2 and Cu2O were detected in the XRD diffractogram, indicating a high purity phase of the CuO nanostructure. Furthermore, the crystallite size was computed applying the Debye-Scherer relation [17,18]: D  0.9/cosθ, where D is the average crystallite size,  is the wavelength of applied X-ray radiation,  represents the full width at half maximum (FWHM) value, and θ is the Bragg's diffraction angle. The average crystallite size of CuO is estimated to be 23.8 nm, implying the nano dimension of CuO.…”

“…Nanostructured materials with particle dimension below 100 nm provide useful applications in the fields of medicine, pharmaceutics, environment, energy, and materials [1,2]. Tenorite or copper oxide (CuO) nanostructure is a black transition metal oxide with a monoclinic crystal structure.…”

pH-induced wurtzite-zinc blende heterogeneous phase formation, optical properties tuning and thermal stability improvement of green synthesized CdS nanoparticles

“…are among the favorite nanostructures produced, as reported previously in the literature [ [15] , [16] , [17] , [18] , [19] ]. As we know in common, CdS occurs naturally in three different phase structures: cubic (zinc blende), hexagonal (wurtzite) and also a heterogeneous phase with the coexistence of cubic and hexagonal mixtures, which is particularly dependent on the preparation method [ 7 , 20 , 21 ]. Nevertheless, the heterogeneous phase of an II-VI group semiconductor nanostructure might become the subject of research interest in the near future, since such a structure might introduce a novel and unique physicochemical property that leads to advanced applications, especially in the fields of photocatalysis and solar energy storage.…”

“…In this work, the novel CdS nanoparticles in a heterogeneous phase of cubic and hexagonal were synthesized at different solution pH values (i.e., 12.90, 11.28 and 10.00) via a co-precipitation method between the reactions of cadmium chloride (CdCl 2 ) and thiourea precursors, in which ammonium nitrate was utilized as a surfactant and pH modifier. The CdS was then subjected to a critical annealing treatment at 320 °C to initiate grain growth and crystalline phase transformation, at which the heating temperature is double compared to that reported by Alrababah et al [ 21 ]. Ammonium nitrate can be considered a vital sustainable green synthetic material because it contains non-toxic nitrogen, hydrogen and oxygen elements, whereas this material is usually used as artificial fertilizers, antibiotics and also as nutrients for yeast.…”