Efficiency study of perforated diamond electrodes for organic compounds oxidation process

Boron-doped diamond electrodes for carbofuran electrochemical degradation

“…Th at is, the diamond electrode allows the investigation of substances having standard potential more positive or negative without interference from the water electrolysis. Th e reaction of O 2 generation was started at approximately 1.8 V and the reaction of H 2 generating at about -1.0 V. The high value of positive anodic limit of these electrodes makes them good candidates for application as anode materials for organic electro oxidation (28) . In Ti/BDD anode, organic compounds are completely oxidized via •OH radical electro generated, so that these electrodes are good for use in electrochemical degradation of the pesticides and herbicides, promoting the combustion of organic pollutants with high efficiency (29) .…”

Electrochemical Incineration of Organic Pollutants for Wastewater Treatment: Past, Present and Prospect

“…Not only SnO 2 electrode has the good attractive to be used as electrode for wastewater treatment in electrochemical oxidation, the diamond thin films have been widely used in electrochemical studies due to the unique properties like chemical stability, large potential range and mechanical resistance. Their applications embrace the electroanalysis, electrosynthesis, fuel cell and the organic pollutant degradation in wastewater (Diniz et al, 2003). Some studies showed that conducting diamond electrodes could be grown by energyassisted (plasma or hot-filament) chemical vapor deposition on several substrates, such as silicon, titanium, niobium, tantalum, molybdenum, glassy carbon.…”

“…In fact, a silicon substrate is very brittle, Nb, Ta, W are too expensive and the stability of the diamond layer deposited on the Ti substrate is still not satisfactory, because cracks may appear and cause the detachment of the diamond film during long-term electrolysis (Panizza & Cerisola, 2005). The organic compound electrochemical oxidation efficiency strongly depends on the used anode material and diamond is very interesting due to its superior properties (Diniz et al, 2003). In recent years, there are some publications on the application of diamond electrode for wastewater treatment (Diniz et al, 2003, Lissens., 2003.…”

“…The organic compound electrochemical oxidation efficiency strongly depends on the used anode material and diamond is very interesting due to its superior properties (Diniz et al, 2003). In recent years, there are some publications on the application of diamond electrode for wastewater treatment (Diniz et al, 2003, Lissens., 2003. However, the application of diamond electrode for organic pollutant degradation still limited due to the cost of diamond electrode is too expensive.…”

Filmes de nanodiamantes para aplicações em sistemas eletroquímicos e tecnologia aeroespacial

“…As vantagens destes eletrodos incluem alta resistência à corrosão e dureza, grande faixa de potencial de trabalho (-3 a +3 V) para a maioria dos solventes e eletrólitos, alta inércia química e eletroquímica, baixa corrente de fundo, atividade eletroquímica reprodutível sem pré-tratamento e alta condutividade elétrica e térmica 33,34 . Sendo assim, os filmes de diamante podem ser usados em eletrossíntese [35][36][37][38][39][40][41] , no tratamento de efluentes [42][43][44][45][46][47][48] , em eletroanálise 49-51 e em colunas de detecção [52][53][54] . Alguns experimentos eletroquímicos conduzidos por Swain et al 55 permitiram verificar que a microestrutura superficial dos filmes de diamante não sofre corrosão em meio de fluoretos ácidos, enquanto que as microestruturas de eletrodos de grafite e carbono vítreo são severamente danificadas.…”