Visible Light Active Structured Photocatalysts for the Removal of Emerging Contaminants 2020
DOI: 10.1016/b978-0-12-818334-2.00003-1
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Structured photocatalysts for the removal of emerging contaminants under visible or solar light

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Cited by 15 publications
(6 citation statements)
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“…The surface of TiO 2 is believed to have high oxidation potential which makes it able to break down many organic substances in photocatalysis process. Photocatalysis is referred to the reaction that uses light to activate a photocatalyst and then increase the speed of chemical reaction by lowering the activation energy for the primary reaction to occur [4]. Photocatalytic reaction in general involved six photocatalytic processes which are (1) charge separation process, (2) surface recombination, (3) surface trapping, (4) surface recombination, (5) interfacial charge transfer, and (6) back reaction [5].…”
Section: Introductionmentioning
confidence: 99%
“…The surface of TiO 2 is believed to have high oxidation potential which makes it able to break down many organic substances in photocatalysis process. Photocatalysis is referred to the reaction that uses light to activate a photocatalyst and then increase the speed of chemical reaction by lowering the activation energy for the primary reaction to occur [4]. Photocatalytic reaction in general involved six photocatalytic processes which are (1) charge separation process, (2) surface recombination, (3) surface trapping, (4) surface recombination, (5) interfacial charge transfer, and (6) back reaction [5].…”
Section: Introductionmentioning
confidence: 99%
“…However, the current trend of using solar light as a cost-effective energy source hinders the use of TiO 2 due to the characteristic large band gap value (E g % 3.2 eV). It results in that only the UV contribution from the solar spectrum (i.e., around 5 %) can be harvested to generate the electron/hole pair responsible for the formation of oxidant radicals that may allow the degradation of the contaminants [5][6][7]. Different approaches are explored to expand the light absorption edge of TiO 2 -based photocatalysts towards the visible region, such as the use of dopant species or sensitizers.…”
Section: Introductionmentioning
confidence: 99%
“…Además, la fotocatálisis se considera un proceso avanzado de oxidación (PAO), ya que la conversión de los contaminantes se realiza mediante la generación de especies reactivas de oxígeno (ROS, por sus siglas en inglés, por ejemplo, radicales hidroxilos, HO • o aniones radicales superóxido, O 2 •-), que se caracterizan por presentar un alto poder oxidante. En el caso de la fotocatálisis, los siguientes pasos (mostrados en las ecuaciones (1)-( 4) y esquematizados en la Figura S3) se producen entre la irradiación del fotocatalizador y la generación de las ROS (todos estos pasos ocurren en una escala de tiempo de 10 -15 a 10 -12 s) (Belver et al, , 2020):…”
Section: Introductionunclassified