@Article{ToledoPinhTravCora:2022:DeBoDi,
               author = "Toledo, William Diniz Macedo Clementino de and Pinheiro, 
                         Rom{\'a}rio Ara{\'u}jo and Trava-Airoldi, Vladimir Jesus and 
                         Corat, Evaldo Jos{\'e}",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)}",
                title = "Development of boron-doped diamond (BDD) deposited on carbon 
                         nanotubes (CNT) to form BDD/CNT structures relevant for 
                         electrochemical degradation",
              journal = "Diamond and Related Materials",
                 year = "2022",
               volume = "127",
                pages = "e109159",
                month = "Aug.",
             keywords = "Boron doped diamond, Carbon nanotubes, Electrochemical advanced 
                         oxidation processes, Environmental technology, Nanocomposites, 
                         Porous material.",
             abstract = "This work presents a new class of Boron-Doped Diamond (BDD) anode 
                         for electrochemical degradation. BDD deposition on carbon 
                         nanotubes (CNT) is the base for the electrode, because the 
                         nanodiamond seeding of oxidized CNT makes diamond nucleation and 
                         onset growth very efficient. For the tests presented in this work, 
                         the CNT was grown on a carbon fiber (CF) cloth. The BDD electrodes 
                         developed with only 10 min of diamond growth (named BDD-10) were 
                         tested for brilliant green (BG) dye degradation and showed 
                         excellent electrochemical characteristics as large surface area, 
                         large potential window, low charge transfer resistance and high 
                         degradation rates (kapp). For precise kapp determination in a 
                         setup using 360 mL of solution with 100 mg/L of the BG dye, the 
                         degradation experiments operated at low current density (5 and 10 
                         mA/cm2). Dye degradation characterization used both UV/Vis color 
                         removal and HPLC. Few experiments at higher current densities and 
                         at a fixed time of 10 min showed an increase of color removal 
                         compatible with a linear dependence of kinetics on current. The 
                         kapp found are relatively high (\≈0.033 min\−1 at 10 
                         mA/cm2), and an important result is the low value of energy 
                         consumption to decrease BG dye concentration by one 
                         order-of-magnitude (EEO < 0.4 Wh/L). The low energy consumption 
                         correlated with the low average voltage during degradation and 
                         with the electrode low charge transfer resistance. FEG-SEM and 
                         Raman spectroscopy surface characterization show that BDD-10 
                         electrode preserves their morphological and structural 
                         characteristics after BG dye degradation, showing that the short 
                         time BDD growth is enough to preserve electrode from surface 
                         deterioration. The BDD-10 outperformed all anodes of intermediary 
                         phases of electrode production: the CF, the oxidized CNT deposited 
                         on CF with and without purification to remove surface iron 
                         particles. Lifetime tests showed the electrode fails soon, after 
                         89 h under a current of 25 mA/cm2. However, the analysis and 
                         characterization of the lifetime test shows that erosion of CF/CNT 
                         interfaces caused the failure. The BDD/CNT structure remains 
                         completely preserved. These findings may suggest this as an 
                         excellent and economical method to produce BDD degradation 
                         anodes.",
                  doi = "10.1016/j.diamond.2022.109159",
                  url = "http://dx.doi.org/10.1016/j.diamond.2022.109159",
                 issn = "0925-9635",
             language = "en",
           targetfile = "1-s2.0-S0925963522003417-main.pdf",
        urlaccessdate = "04 maio 2024"
}