CdS with Various Novel Hierarchical Nanostructures by Nanobelts/Nanowires Self-Assembly: Controllable Preparation and Their Optical Properties

Abstract

Many fascinating CdS hierarchical nanostructures, including nanobelt networks, flower/sphere networks by nanobelts/wires self-assembly, and nanowires, have been successfully prepared in high yields and purities by a novel dithizone (DTZ) and tetraethylenepentamine (TEPA)-synergistically directed method. A detailed study of the effect of experimental parameters on the morphology is presented. Results and analyses demonstrated that the Cd(Ac) 2 /dithizone (DTZ) molar ratio and the volume ratio of H 2 O and TEPA have an immense function in the subtle morphology control of CdS products. A possible growth process of DTZ and TEPA-synergistic-assisted gradual crystallization and subsequent self-assembling is proposed as a plausible mechanistic interpretation for the formation of those novel nanostructures. More importantly, this is the first time to synthesize wurtzite CdS ultrathin nanobelts in solution. The photoluminescence properties of various CdS hierarchical structures are also investigated.

In2O3 microbundles constructed with well-aligned single-crystalline nanorods: F127-directed self-assembly and enhanced gas sensing performance

“…Recently, much research attention was focused on the construction of hierarchical micro/nanostructures with well-ordered textures self-assembled from zero-, one-and two-dimensional (0D, 1D, and 2D) nanoscale building blocks, such as nanodots, nanowires, nanobelts, and nanoflakes [1][2][3][4]. To date, the integration of 1D nanounits into hierarchical structures is of special interest due to their peculiar properties and functional applications [5].…”

Optical properties of flower‐like CdS prepared by a hydrothermal method with SDBS as surfactant

“…And it can not be explained by the quantum confinement effect emitted at the emission at 461 nm due to the large particle size. The possible cause is about the defects of the samples and the special morphology of flower-like structures [33][34][35]. And in other hand, the PL intensity of CdS is increasing when the concentration of SDBS increases from 0.0011 g/ml to…”

“…As the defects of the samples and the special morphology of flower-like structures, it can not be explained by the quantum confinement effect emitted at the emission at 461 nm due to the large particle size. [33][34][35]. We can see from figure 10 that the PL intensity is increasing when the reaction temperature increases from 120…”

Controlled growth, properties, and application of CdS branched nanorod arrays on transparent conducting oxide substrate

“…[18][19][20]. A number of reports have described the growth of CdS branched nanostructures in colloidal systems [21][22][23][24][25][26]. In contrast, only a few studies on CdS straight nanorod arrays on substrates have been reported [27][28][29][30][31] [32], where CdS branched nanorod arrays were fabricated via a one-step hydrothermal approach employing cadmium sulfide and thiourea as starting agents.…”