Copper sulfide (CuS) nanocrystals with flower-like and tubular morphology have been
successfully synthesized via a facile and convenient hydrothermal route at 75 °C by using
CuCl2·2H2O as Cu-precursor, C2H5NS as S-source and CTAB as template molecules. The effect of
concentration of reactants and template molecules on morphology has been discussed. X-ray
diffraction pattern suggests that the CuS crystals are pure hexagonal phase. The morphology of the
products has been studied by scanning electron microscope analysis. The absorption peaks of CuS
in UV and near-IR regions indicate that the as-prepared CuS are promising in the development of
photoelectric devices.
The morphology-controlled synthesis of ZnO nanoforests is achieved via a facile hydrothermal route based on the respective and synergistic influence of polyethylenimine (PEI) and ammonia. More importantly, the unique architectural characteristics endow the willow-like ZnO nanoforest with prominent photoelectrochemical water splitting performance, which leads to the realm of homogeneous ZnO nanostructures.
A facile hydrothermal route was developed to generate size- and shape-controlled (Gd(OH)3) nanoparticles and polyethylenimine-stabilized Gd(OH)3@Au core/shell nanostars with photothermal properties.
Manganese dioxide nanostructures with controllable morphological structures and crystalline phases were synthesized via a facile hydrothermal route at low temperatures without using any templates or surfactants. Both the aging duration and aging temperatures were the main synthesis parameters used to influence and control the rate of morphological and structural evolution of MnO2nanostructures. MnO2nanostructures comprise of spherical nanoparticulate agglomerates and highly amorphous in nature were formed at lower temperature and/or short aging duration. In contrast, MnO2nanostructures of sea-urchin-like and nanorods-like morphologies and nanocrystalline in nature were prepared at the combined higher aging temperatures and longer aging durations. These nanostructures underwent notable phase transformation from δ-MnO2to α-MnO2upon prolonged hydrothermal aging duration and exhibited accelerated rate of phase transformation at higher aging temperature.
Controlled Synthesis of Manganese Dioxide Nanostructures via a Facile Hydrothermal Route