Single‐Step Synthesis and Surface‐Assisted Growth of Superconducting TaS₂ Nanowires

Abstract

Super skinny: TaS2 nanowires with a high aspect ratio (50 000:1; see micrograph) are synthesized from the elements in a one‐step reaction. The single‐crystalline 2H‐TaS2 nanowires are superconducting, with a transition temperature (Tc=3.4 K) that is enhanced compared to that of the bulk material (Tc=0.8 K).

Electrical Transport and High‐Performance Photoconductivity in Individual ZrS2 Nanobelts

“…The large band-edge excitation of the d -d transition centered at a metal site gives rise to the unique electronic features and, therefore, results in numerous applications in catalysis, [ 1 ] electrochemical intercalation, [ 2 ] lithium-ion batteries, [ 3 ] and superconductivity. [ 4 ] Furthermore, by miniaturizing such structures down to the nanoscale, many novel phenomena have been discovered and unique properties have largely been improved, [5][6][7] but the optoelectronic properties of these materials have rarely been studied. Among dichalcogenides, Zirconium disulfi de (ZrS 2 ) has attracted much attention and corresponding nanowires, nanotubes, and nanobelts have been synthesized in recent years.…”

Growth and characterisation of titanium sulphide nanostructures by surface-assisted vapour transport methods; from trisulphide ribbons to disulphide nanosheets

“…1) [20]. Weighed amounts of sulfur (Fisher, 99.99%) and titanium (Koch-Light Laboratories, 99.95%) powders were placed in one end of a 12 mm diameter silica reaction tube prior to the introduction of the central constriction.…”

“…Growth of nanostructured TiS 3 has been thus far confined to chemical vapour transport (CVT) routes [13,14] exploiting the ability of TiS 3 to grow on Ti foil surfaces in much the same way as, for example, TaS 2 will grow on a tantalum metal surface [20]. Both reports yield arrays of bundled nanobelts of TiS 3 and, in fact, thin films of TiS 3 were reported to form under low temperature conditions via MOCVD with a TiCl 4 precursor a decade earlier, although the microstructure of the trisulfide products was not investigated in detail [21].…”

“…It is a focus of our research to design and adapt CVT and CVD methods with the intent of exerting a greater control over their outcome [20,22]. Metal surfaces can be employed very successfully as a growth medium in Surface Assisted Chemical Vapour Transport (SACVT) reactions but SACVT methods are not uniformly appropriate across all metal-chalcogenide systems and one has to recognise the limitations imposed by the high melting points of many transition metals and their compounds.…”

Bi-Phasic photocatalytic particles prepared by sequential layer depositions for water cleaning and purification

“…Another approach is to grow hierarchical nanostructures upon the outer layer for additional functionality. [44,45] Most literature reports for the synthesis of heterojunctions describe products in the shape of core-shells, thin films, microscopic beads grafted with nano-particles, or related. [4, 12,46] Heterojunctions are beneficial for water cleaning as there is a need to maximise charge separation in order to ensure the longest carrier lifetime.…”