Low temperature, shape-selective formation of Sb₂Te₃ nanomaterials and their thermoelectric applications

Abstract

Thermoelectric properties of shape-selective Sb2Te3 nanomaterials which synthesized at a low temperature within a short reaction time have been reported.

Phosphorus Ester Containing Mesoporous Silica as Novel High‐Effective Flame Retardant in Polyurethane and Polyester Coatings

“…For bare CTAB(c), strong peaks between 1383 cm −1 and 1486 cm −1 are present due to symmetrical and asymmetrical C−H scissoring vibration of H 3 C−N moiety, at 1462 cm −1 and 960 cm −1 two strong peaks observed due to C−N stretching and a peak at 1141 cm −1 could be attributed to N−H bending. Peak at 1635 cm −1 of both mesoporous materials represented the bending vibration of hydroxyl groups [20–23] …”

“…Peak at 1635 cm À 1 of both mesoporous materials represented the bending vibration of hydroxyl groups. [20][21][22][23] After calcinations process (a), the all organic group related peaks have disappeared. There are only some characteristic peaks of silanes such as À OH stretching band of silanol group (SiÀ OH) condensation was observed around 3440 cm À 1 as a wide band.…”

Synthesis of Mesoporous Silica From Beach Sand Using Variation of Cetyl Trimethyl Ammonium Bromide (CTAB)

“…The spectral patterns of the beach sand before and after the acid leach is not significantly different, so the possibility of the process did not affect the initial structure of the sand much. The CTAB showed to have CH3, methylene CH2, C-H in alkyl chain, and C-N group at 2923 cm -1 , 2850 cm -1 , 1477 cm -1 and 964 cm -1 [20,21], respectively. Those functional groups were matched with the CTAB structure in Figure 1.…”

Anisotropy of Microstructure and Its Influence on Thermoelectricity: The Case of Cu2Te–Sb2Te3 Eutectic

“…In earlier reports, the thermoelectric transport properties of the constituent phases, that is, Cu 2 Te and Sb 2 Te 3 , have been tuned by controlling the charge carrier concentration via doping/alloying − and by microstructural engineering. , Both chalcogenides crystallize with a trigonal crystal structure and are intrinsically p-type semiconductors that form a solid solution with each other over a wide range of compositions. Cu 2 Te has unique electronic properties and belongs to the phonon-liquid-electron-crystal (PLEC) system possessing low thermal conductivity. , Sb 2 Te 3 is a room-temperature thermoelectric material used mostly for refrigeration applications . A qualitative study of a set of Cu 2 Te–Sb 2 Te 3 pseudobinary alloys along with their microstructure and thermoelectric properties is available .…”

“…43,44 Sb 2 Te 3 is a roomtemperature thermoelectric material used mostly for refrigeration applications. 45 A qualitative study of a set of Cu 2 Te− Sb 2 Te 3 pseudobinary alloys along with their microstructure and thermoelectric properties is available. 40 However, very few studies in the literature aim to correlate the microstructural length scale and arrangements of multicomponent phases quantitatively with the thermoelectric power factor.…”