Highly photocatalytic TiO2 interconnected porous powder fabricated by sponge-templated atomic layer deposition.
A titanium dioxide (TiO2) interconnected porous structure has been fabricated by means of atomic layer deposition of TiO2 onto a reticular sponge template. The obtained freestanding TiO2 with large surface area can be easily taken out of the water to solve a complex separation procedure. A compact and conformal nanocoating was evidenced by morphologic characterization. A phase transition, as well as production of oxygen vacancies with increasing annealing temperature, was detected by x-ray diffraction and x-ray photoelectron spectroscopy, respectively. The photocatalytic experimental results demonstrated that the powder with appropriate annealing treatment possessed excellent photocatalytic ability due to the co-action of high surface area, oxygen vacancies and the optimal crystal structure.
Department of Materials Science, Fudan University, Shanghai 200433, People's Republic of China.
Shengqiang
S
Pan
Yuting
Y
Zhao
Gaoshan
G
Huang
Jiao
J
Wang
Stefan
S
Baunack
Thomas
T
Gemming
Menglin
M
Li
Lirong
L
Zheng
Oliver G
OG
Schmidt
Yongfeng
Y
Mei