Ni2+/surfactant-assisted route to porous α-Fe2O3 nanoarchitectures.
Uniform porous three-dimensional nanoarchitectures of α-Fe(2)O(3) with high yield have been synthesized by a route based on a Ni(2+)/surfactant system. The obtained α-Fe(2)O(3) has a flue-like porous morphology with a rough surface. What is more, spatially ordered nodes and meshes are presented in these networks. By adjusting the experimental parameters such as temperature, reaction time, proportion of Ni(2+)/PVP and types of cation, we can control the morphology of the samples well. A possible formation mechanism is proposed to explain the growth of the flue-like nanostructures. The obtained flue-like porous α-Fe(2)O(3) has a large specific surface area of 88.82 m(2) g(-1). It exhibits significantly enhanced visible-light-driven photocatalytic performance in the degradation of methylene blue, compared with α-Fe(2)O(3) nanoparticles. This work not only enriches the synthesis methods of porous architectures, but also facilitates the applications of α-Fe(2)O(3) in the fields of water treatment, sunlight utilization and so forth.
College of Chemistry and Materials Science, Anhui Key Laboratory of Functional Molecular Solids, Anhui Normal University, Wuhu, 241000, PR China. bygeng@mail.ahnu.edu.cn
Baoyou
B
Geng
Bo
B
Tao
Xuelian
X
Li
Wenjing
W
Wei