@Article{VernasquiSaRoLaFeRo:2024:NeDiCo,
               author = "Vernasqui, La{\'{\i}}s Gimenes and Santos, G{\'e}ssica O. S. 
                         and Rodr{\'{\i}}guez-G{\'o}mez, Alberto and Lanza, Marcos R. V. 
                         and Ferreira, Neiden{\^e}i Gomes and Rodrigo, Manuel A.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {University 
                         of Castilla La Mancha} and {University of Castilla La Mancha} and 
                         {Universidade de S{\~a}o Paulo (USP)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {University of Castilla La 
                         Mancha}",
                title = "New diamond coatings for peroxosulphate production",
              journal = "Journal of Electroanalytical Chemistry",
                 year = "2024",
               volume = "954",
                pages = "e118021",
                month = "Feb.",
             keywords = "Caro's acid, Diamond electrodes, Electrolysis, Peroxosulphate.",
             abstract = "In this work new diamonds coating, named as nanocrystalline 
                         diamond (ND) and ultrananocrystalline diamond (UND) are evaluated 
                         for the production of peroxospecies derived from the electrolysis 
                         of sulphuric acid and their performance is compared to that of a 
                         commercial diamond coating widely used in the literature and 
                         well-known by its outstanding performance. The oxidant production 
                         was tested at two different current densities and significant 
                         differences were found in oxidant production between the 
                         electrodes applied in the different conditions studied. Results 
                         demonstrate that when the lowest current is applied (25 mA 
                         cm\−2), the ND and UND electrodes are more efficient in the 
                         persulfate formation. For ND electrode, this behavior can be 
                         explained in terms of the promoted hydroxyl radical formation at 
                         these conditions. However, the UND electrode presented different 
                         behavior: the lesser hydroxyl formation and highest peroxospecies 
                         formation. This behavior may be attributed to the sum of two 
                         factors: the high sp2 content in the diamond film and its 
                         porosity, that can increase the sulphate adsorption at the surface 
                         that, in turn, facilitates the persulfate generation. This 
                         behavior can be proved by the Tafel plots and are explained by the 
                         electrode's features discussed by Raman spectra. When the 
                         operation current is increased to harsher conditions (300 mA 
                         cm\−2), the commercial electrode increases importantly the 
                         production of the studied oxidant. One more time it can be 
                         attributed to the hydroxyl radical generation at this condition. 
                         Considering the energy consumption and the process efficiency, it 
                         can be concluded that the UND electrode is more attractive for 
                         this application in the studied conditions.",
                  doi = "10.1016/j.jelechem.2023.118021",
                  url = "http://dx.doi.org/10.1016/j.jelechem.2023.118021",
                 issn = "0022-0728",
             language = "en",
           targetfile = "1-s2.0-S1572665723008858-main.pdf",
        urlaccessdate = "06 maio 2024"
}