title: Titanium Dioxide/Upconversion Nanoparticles/Cadmium Sulfide Nanofibers Enable Enhanced Full-Spectrum Absorption for Superior Solar Light Driven Photocatalysis.
abstract: In this work, we demonstrate an electrospinning technique to fabricate TiO2 /upconversion nanoparticles (UCNPs)/CdS nanofibers on large scale. In addition, the as-prepared TiO2 nanofibers are incorporated with a high population of UCNPs and CdS nanospheres; this results in Förster resonance energy-transfer configurations of the UCNPs, TiO2 , and CdS nanospheres that are in close proximity. Hence, strong fluorescent emissions for the Tm(3+) ions including the (1) G4 →(3) H6 transition are efficiently transferred to TiO2 and the CdS nanoparticles through an energy-transfer process. The as-prepared TiO2 /UCNPs/CdS nanofibers exhibit full-spectrum solar-energy absorption and enable the efficient degradation of organic dyes by fluorescence resonance energy transfer between the UCNPs and TiO2 (or CdS). The UCNPs/TiO2 /CdS nanofibers may also have enhanced energy-transfer efficiency for wide applications in solar cells, bioimaging, photodynamics, and chemotherapy.
authors.affiliation: Department of Medical Materials and Rehabilitation Engineering, School of Biological and Medical Engineering, Hefei University of Technology, Hefei, 230009, P. R. China.
authors.forename: Fu
authors.initials: F
authors.lastname: Zhang
authors.affiliation: School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, P. R. China.
authors.forename: Chuan-Ling
authors.initials: CL
authors.lastname: Zhang
authors.affiliation: Department of Medical Materials and Rehabilitation Engineering, School of Biological and Medical Engineering, Hefei University of Technology, Hefei, 230009, P. R. China.
authors.forename: Wan-Ni
authors.initials: WN
authors.lastname: Wang
authors.affiliation: School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, P. R. China.
authors.forename: Huai-Ping
authors.initials: HP
authors.lastname: Cong
authors.affiliation: Department of Medical Materials and Rehabilitation Engineering, School of Biological and Medical Engineering, Hefei University of Technology, Hefei, 230009, P. R. China. shqian@hfut.edu.cn.
authors.forename: Hai-Sheng
authors.identifier: 0000-0003-4903-3447
authors.initials: HS
authors.lastname: Qian
mesh_terms: D065966:Absorption, Physicochemical; D019187:Cadmium Compounds / Q000737:chemistry*; D002384:Catalysis; D007259:Infrared Rays; D057139:Nanofibers / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D055668:Photochemical Processes; D013440:Sulfides / Q000737:chemistry*; D013472:Sunlight; D014025:Titanium / Q000737:chemistry*
chemical_list: D019187:Cadmium Compounds; D013440:Sulfides; C034939:cadmium sulfide; C009495:titanium dioxide; D014025:Titanium
keywords: FRET; electrospinning; energy transfer; nanoparticles; photocatalysis