Facile synthesis of micrometer FeS/PVP architectures with the aid of thiourea |
| |
| Authors: | Yanbao Zhao Li Yao Yuanchun Qi Lei Sun Zhishen Wu |
| |
| Institution: | (1) Key Laboratory for Special Functional Materials, Henan University, Kaifeng, 475004, People’s Republic of China;(2) College of Computer and Information Engineering, Henan University, Kaifeng, 475004, People’s Republic of China |
| |
| Abstract: | Micrometer-sized flowerlike FeS/poly(vinyl pyrrolidone)(PVP) architectures were synthesized by solvothermal process with the
aid of thiourea, in which PVP may serve as soft templates. The FeS/PVP flowers have uniform morphologies with an average diameter
of 5 μm, made of several nanopetals. The formation of FeS/PVP flowers is a new kinetic control process. In this process, thiourea
molecules would be decomposed to produce “gas bubble”, and the “gas bubble” could make PVP chain segment rearrange along exterior
force, resulting in the morphology evolution. The higher “gas bubble” pressure would produce 3D flowers, and the lower pressure
would give a hollow structure. The evolution process from particles to 3D flowers is observed for the first time. In addition,
the hollow FeS/PVP and Cu2S/PVP spheres are also obtained by this technique. |
| |
| Keywords: | Composites Fabrication 3D flowers Solvothermal method |
| 本文献已被 SpringerLink 等数据库收录！ |
|
