Commercial TiO 2 loaded with NiO for improving photocatalytic hydrоgen prоduction in the presence оf simulated solar radiation

2020 ◽  
Vol 44 (11) ◽  
pp. 8951-8963
Author(s):  
Nemanja Banić ◽  
Jugoslav Krstić ◽  
Stevan Stojadinović ◽  
Anđela Brnović ◽  
Aleksandar Djordjevic ◽  
...  

Catalysts ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 885
Author(s):  
Aida M. Díez ◽  
Helen E. Valencia ◽  
Maria Meledina ◽  
Joachim Mayer ◽  
Yury V. Kolen'ko

Considering water scarcity, photo-based processes have been presented as a depollution technique, which should be optimized in order to be applied in the future. For that, the addition of an active photocatalyst and the usage of solar radiation are mandatory steps. Thus, Fe3O4–SiO2–TiO2 was synthesized, and its performance was evaluated using simulated solar radiation and methylene blue as a model pollutant. Under optimal conditions, 86% degradation was attained in 1 h. These results were compared to recent published data, and the better performance can be attributed to both the operational conditions selection and the higher photocatalyst activity. Indeed, Fe3O4–SiO2–TiO2 was physico-chemically characterized with techniques such as XRD, N2 isotherms, spectrophotometry, FTIR, electrochemical assays and TEM.



Chemosphere ◽  
2021 ◽  
Vol 272 ◽  
pp. 129631
Author(s):  
Ying Zhang ◽  
Hui Yu ◽  
Shaofeng Li ◽  
Lei Wang ◽  
Fuxin Huang ◽  
...  


Solar Energy ◽  
2005 ◽  
Vol 78 (6) ◽  
pp. 695-703 ◽  
Author(s):  
A. de Miguel ◽  
J. Bilbao


2012 ◽  
Vol 87 (8) ◽  
pp. 1051-1058 ◽  
Author(s):  
Zacharias Frontistis ◽  
Despo Fatta-Kassinos ◽  
Dionissios Mantzavinos ◽  
Nikolaos P. Xekoukoulotakis


2012 ◽  
Vol 51 (51) ◽  
pp. 16552-16563 ◽  
Author(s):  
Zacharias Frontistis ◽  
Catherine Drosou ◽  
Konstantina Tyrovola ◽  
Dionissios Mantzavinos ◽  
Despo Fatta-Kassinos ◽  
...  




2007 ◽  
Vol 0 (0) ◽  
pp. 070920220651002-??? ◽  
Author(s):  
Catharina M. Lerche ◽  
Peter A. Philipsen ◽  
Thomas Poulsen ◽  
Hans Christian Wulf


Author(s):  
Giorgia Miolo ◽  
Benedetta Vicario ◽  
Giulia Stocchero ◽  
Valerio Causin ◽  
Susanna Vogliardi ◽  
...  

Abstract The action of solar radiation on the concentration of the ethanol metabolite ethyl glucuronide (EtG) in 40 hair samples of nonabstinent subjects was investigated. Hair samples of different colors were analyzed before and after irradiation with artificial sunlight under a light dose corresponding to 3 months of sun exposure. After irradiation, an increase of EtG concentration was detected in 55% of the samples ranging from 5% to 141%. In 16 cases, a concentration reduction ranging from −2% to −74% was observed. The measure of the level of pyrrole-2,3,5-tricarboxylic acid (PTCA), a marker of eumelanin oxidation, demonstrated the largest increase in oxidation in light brown hair where the greatest degradation of EtG was observed after irradiation. However, the rise of PTCA in all hair tested was accompanied by increase in EtG concentration in 8/10 samples and by decrease in 2/10, suggesting no correlation between the two markers. To verify if hair structure was modified by light, scanning electron microscopy (SEM) analysis was performed on irradiated hair of different colors and compared with the dark samples. SEM revealed modification of hair structure in all samples showing partial shaft exfoliation and reduction of hair thickness under the treatment with solar radiation.



Solar Energy ◽  
2011 ◽  
Vol 85 (11) ◽  
pp. 2732-2740 ◽  
Author(s):  
João H.O.S. Pereira ◽  
Vítor J.P. Vilar ◽  
Maria T. Borges ◽  
Oscar González ◽  
Santiago Esplugas ◽  
...  


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