Ordered arrays of shape tunable CuInS2 nanostructures, from nanotubes to nano test tubes and nanowires

Abstract

Well-aligned arrays of chalcopyrite CuInS(2) one dimensional nanostructures have been prepared in a controllable manner via a convenient wet-chemical approach using anodic aluminium oxide (AAO) as a hard template. Highly oriented CuInS(2) nanotubes, nano test tubes and nanowires arrays can be selectively grown by simply varying reaction conditions. Oleylamine (OLA) was found to play a key role in the synthesis and morphology control of the CuInS(2) product. The structure, morphology, composition and optical absorption properties of the as-prepared samples were characterized using X-ray powder diffraction, transmission electron microscopy, energy dispersive X-ray spectrometry, scanning electron microscopy and UV-Vis spectrophotometry. The formation mechanism of the CuInS(2) arrays is discussed.

One-pot thermolysis synthesis of CuInS2 nanoparticles with chalcopyrite-wurtzite polytypism structure

“…Thiourea was selected as a soft Lewis base that can react with Cu ? as soft Lewis acid and simultaneously as a source of sulfide ion [23][24][25][26][27][28][29][30][31]. The precursors was solved up to 60°C then Cu-TU (dark green color) [32] and In-OLA (light green color) [33] complex was formed.…”

“…The thermolysis as a promising method is based on controlling the nucleation and growth of organometallic compound (complex) by using proper solvents and capping agents. Because of high boiling temperature of the solvents, the synthesized product has high quality nanocrystalline and does not require post annealing treatments [26][27][28]. During this investigation, we have exploited the HSAB concept to synthesize intermediate complexes which are having decomposition temperatures in a very close window resulting in homogenous nucleation and growth of CuInS 2 nanoparticles.…”

Fabrication of hydrogel particles with tantalum oxide nanoparticle payloads as computed tomography contrast agents

“…Currently, in order to fabricate size and shape specific polymeric particles, several approaches have been developed using top-down engineering techniques, including microfluidics-based methods such as stop-flow lithography (SFL) [5], hard-template methods [6], photolithography based approaches [7], as well as imprint lithography approaches [8]. A major ongoing limitation of the various top-down approaches to particle fabrication is the inherent difficulty in scaling to economically and industrially appropriate levels.…”

Replicating hexagonal metal nanorod from ZnO nanorod

“…Well-aligned and dimension-controlled nanostructures can be prepared through the deposition of materials into the nanochannels of a membrane such as polycarbonate [2,[6][7][8], mesoporous silica films [9] and anodic aluminium oxide (AAO) [3,[10][11][12][13], in which nanowires have been successfully prepared including noble metals Au, Pt, Ag [14][15][16] transition metals Co, Ni, Zn [10,[17][18][19] and alloy nanowires or multilayered materials are also synthesized [20]. The materials obtained from these polycarbonate and mesoporous silica films or AAO template only gave one-dimensional (1D) wire or rod with disk-like cross-section.…”