| 초록 |
With the increasing demand, synthesis of inorganic materials with controllable morphology has been predicted for material science research owing to their primal optical, electrical and catalytic properties. Continuous researches on morphology control have shown a dramatic change in materials behavior due to final structures and high surface area. This changeable behavior of material properties has opened the doorway in numerous fields. Nickel tungsten oxide (NiWO4) with 3-D structure attracted a great deal of technical and scientific attention for their wide use as reinforcing agents in photocatalytic, electro-catalytic and energy storage devices. Focusing on these concerns, three-dimensional (3D) flower-like controllable microstructures of NiWO4 were synthesized through surfactant free wet chemical method at low temperature (60 ºC). The wet chemical approach resulted in better yield as well as shortened reaction time and could challenge other renowned methods such as hydrothermal, solvothermal, sol-gel method etc. Interestingly, the uniform morphologies of NiWO4 could vary on the addition of hydrazine without surfactant in aqueous solution. By concluding, the probable mechanism behind the formation of flower-like microstructures was proposed with the aid of the scanning electron microscopy results. Through the thoughtful of the influence of the hydrazine, the morphology of NiWO4 is effectively designed, and this allows the advertising of the applicability of NiWO4 in different areas. |
