Browsing by Author "Ponce Álvarez, Silvia"

Now showing items 21-28 of 28

    • The role of seeding in the morphology and wettability of ZnO nanorods films on different substrates 

      Rodríguez Rodríguez, Juan; Onna, Diego; Sánchez, Luis; Marchi, María Claudia; Candal, Roberto; Ponce Álvarez, Silvia; Bilmes, Sara A. (Elsevier BV, 2013)
      Acceso restringido
      Spray pyrolysis (SP) and spray-gel (SG) techniques were used to deposit ZnO seeds on Fluor doped tin oxide glasses (FTO), heated at 350 ¿C or 130 ¿C, and PET heated at 90 ¿C. The effect of seeding on the morphology and ...

    • TiO2 films on CoFe2O4 nanoparticles for the photocatalytic oxidation of rhodamine B: Influence of the alcoholic solutions 

      Gastello, Elmer; Estrada, David; Estrada, Walter; Luyo, Clemente; Espinoza, Juan; Ponce Álvarez, Silvia; Montes de Oca, Juan; Acosta, Dwight Roberto; Rodríguez, Juan M. (SPIE, 2019)
      Acceso restringido
      In the present work, photocatalytic oxidation of Rhodamine B solutions were performed using a composite material prepared by titanium dioxide films deposited onto cobalt ferrite nanoparticles. Cobalt ferrite nanoparticles ...

    • TiO2:Cex onto Al Clays for Photocatalytic Solar Water Disinfection 

      Belver, Carolina; Ponce Álvarez, Silvia; Carpio, Edward A.; Salazar, G.; García, Pilar A.; Bedia, Jorge; Alvárez Montero, M. A.; Rodriguez Jimenez, Juan J.; Rodríguez, Juan M. (Hindawi, 2020)
      Acceso abierto
      A novel methodology was employed to prepare new nanocomposites with photocatalytic properties based on Ce-doped TiO2 nanoparticles arranged over a layered silicate. The catalysts were porous materials formed by exfoliated ...

    • Transformación de residuos de langostineras para la producción de alimento balanceado para tilapia y de polímeros para cobertura de semillas aplicables a la agricultura orgánica 

      Vargas Gutiérrez, Kryss Aracely; Rojas Meza, María Elena; Telge Noriega, Herbert; Leyton Muñoz, Juan Carlos; Vargas Cárdenas, Jessie; Quino Favero, Javier; Sanabria Villanueva, Jorge Carlos; Paredes Larroca, Fabricio Humberto; Ponce Álvarez, Silvia; Eyzaguirre Pérez, Raúl; Saettone Olschewski, Erich Arturo; Villagarcía Gárate, Héctor Ernesto; Yácono Llanos, Juan Carlos (Universidad de Lima, Instituto de Investigación Científica, 2019)
      Acceso abierto
      Una característica de la industria sostenible es su capacidad para aprovechar los residuos de la actividad industrial y convertirlos en insumo de otra; de este modo, se evitan el desperdicio y el impacto ambiental negativo. ...

    • Tratamiento fotocatalítico de compuestos orgánicos volátiles en aguas rurales 

      Ponce Álvarez, Silvia; Álvarez, Ariadna; Bedia, Jorge; Belver Coldeira, Carolina; Carpio Deza, Edward; Rodríguez, Juan Martín (Universidad de Lima, 2013)
      Acceso abierto
      Con la finalidad de obtener un material óptimo para la remoción del clorofenol en mayor proporción y menor tiempo, así como el rendimiento más alto para nuevos materiales, se prepararon nanotubos de carbono, que fueron ...

    • Treatment of irrigation water infested with nematodes using a solar photoreactor 

      Inga López, Jesarella; Meza Contreras, Víctor; Rodríguez Delfín, Alfredo; Ponce Álvarez, Silvia; Paredes Larroca, Fabricio Humberto; Quino Favero, Javier; Eyzaguirre Pérez, Raúl; Saettone Olschewski, Erich Arturo (Desalination Publications, 2020)
      Acceso restringido
      The objective of this study was to assess the efficacy of the disinfection of irrigation water loaded with the plant-parasitic nematode Meloidogyne incognita using a solar photoreactor. The photoreactor was comprised of a ...

    • Ultraviolet concentration factor of a truncated compound parabolic concentrator under different weather conditions 

      Saettone Olschewski, Erich Arturo; Paredes Larroca, Fabricio Humberto; Quino Favero, Javier; Ponce Álvarez, Silvia; Eyzaguirre Pérez, Raúl (Pleiades Publishing, 2020)
      Acceso restringido
      This study presents the results of ultraviolet radiation measurement in a truncated compound parabolic concentrator. The measurements were performed by using of a portable ultraviolet sensor both inside and outside the ...

    • ZnO (Ag-N) Nanorods Films Optimized for Photocatalytic Water Purification 

      Sanchez, Luis; Castillo, Carlos; Cruz, Willy; Yauri, Bryan; Sosa, Miguel; Luyo, Clemente; Candal, Roberto Jorge; Ponce Álvarez, Silvia; Rodríguez, Juan M. (Multidisciplinary Digital Publishing Institute, 2019)
      Acceso abierto
      ZnO nanorods (NRs) films, nitrogen-doped (ZnO:N), and ZnO doped with nitrogen and decorated with silver nanostructures (ZnO:N-Ag) NRs films were vertically supported on undoped and N doped ZnO seed layers by a wet chemical ...