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Abstract: Ag/TiO2 nanofibers heterostructure were fabricated by calcination of electrospun PVP/Ti(OiPr)4/AgNO3 composite nanofibers and characterized by XRD, FESEM, EDS, and (HR)TEM. The photocatalytic activity of Ag/TiO2 in the decomposition of parathion was also investigated. It was found that the prepared heterostructure composite included Ag nanoparticles distributed uniformly in the TiO2 nanofibers. Comparing with pure TiO2 nanofibers and Ag nanofibers, Ag/TiO2 heterostructure photocatalyst exhibited enhanced photocatalytic activity under ultraviolet light irradiation in the decomposition of parathion aqueous solution. The content of Ag nanoparticles on TiO2 nanofibers played an important role in photocatalytic performance during the parathion degradation reaction. 4% Ag was found to be the optimum doping dosage. [Copyright &y& Elsevier]

Abstract: LaOCl nanotubes were fabricated by calcination of the coaxial electrospun PVP/LaCl3@Oil composite nanofibers, in which oil is the core layer while PVP/LaCl3 forms the shell one respectively. A series of tests such as FTIR, XRD, FESEM, (HR)TEM, EDS, N2 adsorption–desorption and CO2-TPD were conducted to characterize the prepared nanomaterials. XRD and EDS results show that the resultant materials consist of pure tetragonal LaOCl, while FESEM and (HR)TEM images indicate that the materials are nanotubes with a rush surface. The inner diameter and the wall thickness of nanotubes are calculated to be around 200 and 50nm, respectively. The BET surface area of the obtained nanotubes is calculated to be 67.5m2/g. And CO2-TPD experiment shows that the nanotubes possess a high CO2 adsorptive capacity of 0.3352mL/g. It would be used as gas sensing materials. [Copyright &y& Elsevier]