Surfactant-Free Fabrication of Copper Sulfides (CuS, Cu2S) via Hydrothermal Method

Earth abundant, non-toxic, 3D printed Cu2−xS with high thermoelectric figure of merit

“…In addition Cu 2 S is a material of much interest in solar cells, [10][11][12] photocatalysis, 13 catalysis 14 and biosensors, 15 due to Cu 2 S having a bulk band gap of 1.21 eV. 16 Many fabrication techniques have been studied since Cu 2 S was discovered to be a highly efficient thermoelectric material, including melt-solidication, 17 mechanochemical synthesis, 18 ultrasonication and pressing, 19 chemical synthesis and hot pressing, 20 hydrothermal synthesis and hot pressing, 21 hydrothermal synthesis and mechanical alloying followed by spark plasma sintering, 22 mechanical alloying followed by spark plasma sintering, 23 and mechanical alloying with Se doping followed by spark plasma sintering. 24 These techniques however, require high pressure, high temperature and lengthy fabrication times which all contribute to the embodied energy of the material.…”

NiO nanostructures: novel solvent-less solid-state synthesis, characterization and MB photocatalytic degradation

“…The emission spectrum shows a blue shift (2.68 eV, 463 nm), compared to that of the bulk NiO nanostructures. Such a large blue shift of excitonic absorption band can be attributed to the small crystallite size of the samples [23][24][25][26][27][28][29]. To evaluate the photocatalytic decomposition of methylene blue (MB), as-synthesized NiO nanostructures were used as photocatalyst.…”

Hydrothermal Synthesis of Rod-Like LaOCl Nanoparticles from New Precursors

“…On the other hand, weak absorption peaks in 1,479 and 1,417 cm -1 range are related to stretching frequency carbonate ion that has been absorbed from air [26]. Moreover, absorptions at 2,951 and 2,849 cm -1 are related to C-H bond, while the bands at 3,429 and 1,628 cm -1 are characteristic of the stretching vibrations of carboxyl groups C=O and O-H, respectively [27][28][29][30]. Finally, the band at 925 cm -1 is related to N-H (NH 2 ) bending vibrations [25].…”