Search Results - "Rodríguez, J.M. Doña"

Highly photoactive TiO2 microspheres for photocatalytic production of hydrogen by Pulido Melián, E., Nereida Suárez, M., Jardiel, T., Calatayud, D.G., del Campo, A., Doña-Rodríguez, J.M., Araña, J., González Díaz, O.M.

“…In this study, the photocatalytic activity in hydrogen production of a TiO2 catalyst with hierarchical structure and microsphere morphology was tested. This…”
Get full text

Correlation study between photo-degradation and surface adsorption properties of phenol and methyl orange on TiO2 Vs platinum-supported TiO2 by Murcia, J.J., Hidalgo, M.C., Navío, J.A., Araña, J., Doña-Rodríguez, J.M.

“…•Photocatalytic oxidation of phenol and methyl orange over TiO2and Pt–TiO2.•FT-IR study of the substrate-photocatalysts surface interaction.•High influence of…”
Get full text

Comparison of supported TiO2 catalysts in the photocatalytic degradation of NOx by Hernández Rodríguez, M.J., Pulido Melián, E., González Díaz, O., Araña, J., Macías, M., González Orive, A., Doña Rodríguez, J.M.

“…[Display omitted] •Surface area appears to be a determining factor for the activity of the photocatalysts.•No significant enhancement in activity was observed…”
Get full text

Comparative study of nanocrystalline titanium dioxide obtained through sol–gel and sol–gel–hydrothermal synthesis by Seck, E.I., Doña-Rodríguez, J.M., Pulido Melián, E., Fernández-Rodríguez, C., González-Díaz, O.M., Portillo-Carrizo, D., Pérez-Peña, J.

“…[Display omitted] •TiO2 particles were prepared by sol–gel method and by sol–gel combined with hydrothermal treatment.•Rutilization was faster in the…”
Get full text

Photocatalytical removal of bentazon using commercial and sol–gel synthesized nanocrystalline TiO2: Operational parameters optimization and toxicity studies by Seck, E.I., Doña-Rodríguez, J.M., Fernández-Rodríguez, C., González-Díaz, O.M., Araña, J., Pérez-Peña., J.

“…[Display omitted] ► ECT-1023t showed higher photocatalytic activity than commercial Degussa P25 at all pH values. ► Toxicity of intermediates was reduced…”
Get full text

Comparative study of alcohols as sacrificial agents in H2 production by heterogeneous photocatalysis using Pt/TiO2 catalysts by López, Cristina R., Melián, E. Pulido, Ortega Méndez, J.A., Santiago, Dunia E., Doña Rodríguez, J.M., González Díaz, O.

“…•Homemade Pt–TiO2 photocatalyst is used for H2 production.•H2 production is mainly due to photoreforming of the sacrificial agent.•Best H2 productions follow…”
Get full text

Microstructure and charge trapping assessment in highly reactive mixed phase TiO2 photocatalysts by Likodimos, V., Chrysi, A., Calamiotou, M., Fernández-Rodríguez, C., Doña-Rodríguez, J.M., Dionysiou, D.D., Falaras, P.

“…[Display omitted] •Lattice deformation and microstrains correlate to titania’s photocalytic activity.•Microstrains scale linearly with the relative change of…”
Get full text

Effect of NO2 and NO3-/HNO3 adsorption on NO photocatalytic conversion by Araña, J., Garzón Sousa, D., González Díaz, O., Pulido Melián, E., Doña Rodríguez, J.M.

“…[Display omitted] •Photocatalytic degradation of NO2 is not effective.•NO2 interacts with nitrates forming [(NO3−)-(H2O) n-NO2] complexes.•The [(NO3−)-(H2O)…”
Get full text

Photodegradation of 2,4-dichlorophenoxyacetic acid over TiO2(B)/anatase nanobelts and Au-TiO2(B)/anatase nanobelts by Chenchana, A., Nemamcha, A., Moumeni, H., Doña Rodríguez, J.M., Araña, J., Navío, J.A., González Díaz, O., Pulido Melián, E.

“…[Display omitted] •Nanobelts are obtained via hydrothermal method with different starting materials.•The effect of calcination temperature and gold deposition…”
Get full text

Study of the phenol photocatalytic degradation over TiO2 modified by sulfation, fluorination, and platinum nanoparticles photodeposition by Murcia, J.J., Hidalgo, M.C., Navío, J.A., Araña, J., Doña-Rodríguez, J.M.

“…[Display omitted] •Phenol photodegradation on TiO2 modified by sulfation, fluorination, and Pt addition.•Sulfation, fluorination, and Pt addition modified the…”
Get full text

Study of the photocatalytic activity of Pt-modified commercial TiO2 for hydrogen production in the presence of common organic sacrificial agents by Melián, E. Pulido, López, Cristina R., Santiago, Dunia E., Quesada-Cabrera, Raúl, Méndez, J.A. Ortega, Rodríguez, J.M. Doña, Díaz, O. González

“…[Display omitted] •Pt-Kronos vlp7000 is a good commercial photocatalyst for hydrogen production.•Slightly acidic or neutral pH values are more suitable for…”
Get full text

NO photooxidation with TiO2 photocatalysts modified with gold and platinum by Hernández Rodríguez, M.J., Pulido Melián, E., García Santiago, D., González Díaz, O., Navío, J.A., Doña Rodríguez, J.M.

“…[Display omitted] •The metal deposits obtained by chemical reduction were smaller than those by photoreduction.•Pt0 and oxidized Pt species coexist on Pt-C and…”
Get full text

Photocatalytic degradation of estradiol under simulated solar light and assessment of estrogenic activity by Mboula, V. Maroga, Héquet, V., Andrès, Y., Gru, Y., Colin, R., Doña-Rodríguez, J.M., Pastrana-Martínez, L.M., Silva, A.M.T., Leleu, M., Tindall, A.J., Mateos, S., Falaras, P.

“…•The efficiency of the catalysts depends on the irradiation type.•The phenol group of estradiol is not eliminated during the photocatalytic treatment.•The…”
Get full text

In situ FT-IR study of the adsorption and photocatalytic oxidation of ethanol over sulfated and metallized TiO2 by Murcia, J.J., Hidalgo, M.C., Navío, J.A., Araña, J., Doña-Rodríguez, J.M.

“…•Photocatalytic oxidation of ethanol over TiO2 and M-TiO2 (M=Au–Pt).•FT-IR study of the ethanol–photocatalyst interaction.•High influence of sulfation…”
Get full text

Detoxification of waters contaminated with phenol, formaldehyde and phenol–formaldehyde mixtures using a combination of biological treatments and advanced oxidation techniques by ORTEGA MENDEZ, J. A, HERRERA MELIAN, J. A, ARANA, J, DONA RODRIGUEZ, J. M, GONZALEZ DIAZ, O, PEREZ PENA, J

“…•TiO2-photocatalysis and wetlands can treat low concentrations of pollutants.•Fenton reaction achieved high degradation but low mineralization.•The BAF…”
Get full text

Adsorption and photocatalytic degradation of 2,4-dichlorophenol in TiO2 suspensions. Effect of hydrogen peroxide, sodium peroxodisulphate and ozone by Melián, E. Pulido, Díaz, O. González, Rodríguez, J.M. Doña, Araña, J., Peña, J. Pérez

“…[Display omitted] ► DCP degradation is fastest at pH 12 and mineralisation at pH 5. ► At pH 3, toxicity remains high and recalcitrant chlorinated intermediates…”
Get full text

Effect of deposition of silver on structural characteristics and photoactivity of TiO2-based photocatalysts by PULIDO MELIAN, E, GONZALEZ DIAZ, O, RODRIGUEZ, J. M. Doña, COLON, G, NAVIO, J. A, MACIAS, M, PENA, J. Perez

“…[Display omitted] ► A highly photoactive homemade photocatalyst was modified by silver deposits. ► The liquid impregnation method resulted in photocatalysts…”
Get full text

Influence of nickel in the hydrogen production activity of TiO2 by Melián, E. Pulido, Suárez, M. Nereida, Jardiel, T., Rodríguez, J.M. Doña, Caballero, A.C., Araña, J., Calatayud, D.G., Díaz, O. González

“…•Adding NiNO3 to the TiO2 sol–gel synthesis process improves hydrogen production.•Formic acid is not detected in the methanol oxidation.•The optimum…”
Get full text

Differences in the vapour phase photocatalytic degradation of ammonia and ethanol in the presence of water as a function of TiO2 characteristics and the presence of O2 by Sola, A.C., Garzón Sousa, D., Araña, J., González Díaz, O., Doña Rodríguez, J.M., Ramírez de la Piscina, P., Homs, N.

“…•SA shows more and stronger surface Lewis acid sites than P25.•On P25 surface bidentate nitrates are produced by photodegradation of NH3/H2O.•Photodegradation…”
Get full text

Photocatalytic treatment of water containing imazalil using an immobilized TiO2 photoreactor by Santiago, Dunia E., Espino-Estévez, M.R., González, Gabriel V., Araña, J., González-Díaz, O., Doña-Rodríguez, J.M.

“…•The elimination of imazalil was proved for different water matrices.•Suspended and supported TiO2 photocatalysis systems were compared.•The effect of the…”
Get full text