title: Pore volume and distribution regulation of highly nanoporous titanium dioxide nanofibers and their photovoltaic properties.
abstract: By combining the initial solvent volatilization and ultimate calcination to form highly nanoporous polystyrene/titanium dioxide (PS/TiO2) composite nanofibrous mats were fabricated via electrospinning, then the PS was removed afterwards by calcination, and finally porous TiO2nanofibers were formed successfully. The porous structure of the nanofibers was characterized by field emission scanning electron microscopy and Brunauer-Emmett-Teller measurements, which indicated that the size and the diameter of the pore and the ratio of the surface area to the volume of the mats were regulated by adjusting the weight ratios of tetrahydrofuran and N,N-dimethylformamide in the binary solvent mixtures. X-ray photoelectron spectroscopy and Raman analysis confirmed that the addition of TiO2into the fibers was successful and that PS decomposed completely from fibers after calcination at 500°C. The photovoltaic measurements showed that the obtained TiO2nanofibers were ideal candidates for the fabrication of the photoanodes on the dye-sensitized solar cells.
authors.affiliation: Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China.
authors.forename: Zhehao
authors.initials: Z
authors.lastname: Zhou
authors.affiliation: Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Xiao
authors.affiliation: Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China.
authors.forename: Xiaowen
authors.initials: X
authors.lastname: Shi
authors.affiliation: Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Ding
authors.affiliation: Department of Civil, Construction and Environmental Engineering, Iowa State University, IA 50011, USA.
authors.forename: Qun
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China.
authors.forename: Yingfei
authors.initials: Y
authors.lastname: Zhan
authors.affiliation: Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China. Electronic address: hbdeng@whu.edu.cn.
authors.forename: Hongbing
authors.initials: H
authors.lastname: Deng
authors.affiliation: Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Hubei Key Lab of Biomass Resource Chemistry and Environmental Biotechnology, School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China.
authors.forename: Yumin
authors.initials: Y
authors.lastname: Du
keywords: Dye-sensitized solar cells; Electrospinning; Highly nanoporous fibers; Titanium dioxide