A new approach to growth of chemically depositable different ZnS nanostructures

Photocatalytic activity, nanostructure and optical properties of 3D ZnS urchin-like via hydrothermal method

“…(10 mL) of reaction suspension of stock solution is taken and sonicated at 40 kHz for 5 min in a dark place in order to make a uniform dispersion and absorption-desorption equilibrium. Thereinafter, at periodic intervals (10,20,30,40, 50 and 60 min), the taken reaction solution is irradiated under two UV-c lamps (Philips, 253.7 nm, 33.6 μw cm 2 ), then centrifuged at 5000 rpm for 2 min and immediately filtered through a 0.1 Millipore membrane to settle and eliminate the NPs suspended. Ultimately, the absorption of the filtered solution is determined by the UV-Vis spectrophotometer at 503 nm as shown in Figure 7.…”

“…Various procedures have been developed to fabricate ZnS nanostructures such as electrochemical deposition [6], microemulsion [7], solvothermal [8], sol-gel [9,10], coprecipitation [11,12], combustion synthesis [13], pyrolysis [14], hydrothermal [15], laser ablation [16] and vapor deposition [17]. The hydrothermal method is versatile, high ability in controlling the process, productive, adjustable, not needing calcination and milling operation, low contamination and cost-effectiveness [18][19][20].…”

Structural, Optical and Electrical Properties of Bi1.5Zn0.92Nb1.5-6x/5WxO6.92 Pyrochlore Ceramics

“…It is mentioned that the orbital overlapping of the base layer electronic states with the dopant electronic states decrease the electronic band gap through increasing the density of states values that in turn generates very dense electronic structure in substituted systems 24 . Another reason that may also account for the shrinkage in the band gap is the decrease in the lattice parameters 25 . It is mentioned that, the decrease in the value of the lattice parameters causes decreased interatomic distances which brings about reduced binding forces of the valence electrons.…”

“…It is mentioned that, the decrease in the value of the lattice parameters causes decreased interatomic distances which brings about reduced binding forces of the valence electrons. The reduced binding forces indicate that less energy is needed for the electrons to move from the valence to the conduction band, then reducing the E g value 25 .…”

Unveiling the efficiency of microwave-assisted hydrothermal treatment for the preparation of SrTiO3 mesocrystals

“…The processing of ceramic materials with multifunctional properties has been attracting the attention of researchers [1][2][3][4][5][6][7][8][9] aiming to prepare micro/nanostructured inorganic semiconductors through the exploration of a variety of physical and chemical approaches. 2,[10][11][12][13][14][15][16][17] Despite their capability in obtaining such semiconductors, most of approaches spend a large amount of energy and require long synthesis times. 2,13,14,[18][19][20] In this context, the microwave-assisted hydrothermal (MAH) route has been considered a clean, versatile, fast, and highly efficient method to obtain organic and inorganic compounds.…”