A facile single-source approach to urchin-like NiS nanostructures

作者：Shen, Xiaoping^*; Sun, Jiquan; Wang, Guoxiu; Park, Jinsoo; Chen, Kangmin

来源：Materials Research Bulletin, 2010, 45(7): 766-771.

DOI：10.1016/j.materresbull.2010.03.022

• Nanostructures
• Chemical synthesis
• Electron microscopy
• Microstructure

Highly regular urchin-like NiS architectures were synthesized on a large scale by solvothermal treatment of a single-source molecular precursor of nickel diethyldithiocarbamate [Ni(DDTC)(2)] at 180 degrees C. The urchin-like architectures, with an average diameter of similar to 16 mu m, were composed of single-crystalline NiS nanoneedles with a diameter of similar to 100 nm and a length of up to 8 mu m. It was revealed that the solvent medium can strongly affect the composition and crystal phases of the products, and a surfactant is crucial to form urchin-like patterns. Based on the experimental observations, a probable three-step growth mechanism is proposed to explain the formation of the urchin-like nanostructures. The optical properties were investigated by ultraviolet-visible (UV-vis) absorption spectroscopy. This simple and mild single-source solvothermal route may be expected to extend to fabricating other inorganic nano-/micro-superstructures with novel morphologies and complex architectures.

• 出版日期2010-7
• 单位江苏大学