TiO2 supported gold nanoparticles: An efficient photocatalyst for oxidation of alcohol to aldehyde and ketone in presence of visible light irradiation

Photocatalytic Oxidation of Alcohols Using Bimetallic Ag-Pd/TiO2 Catalyst in Presence of Visible Light Irradiation

“…The stirring was continued for further 1 h. The prepared solution was then kept in dark for 24 h to allow the nucleation process. After this period, the solution was placed in an oven at 100 ºC for gelation and aging process and afterward crushed into fine powder to get the required catalyst [6].…”

“…TiO2 has no absorption in visible range and active only under UV light irradiation because of its wide band gap [5]. Since UV light accounts only a small fraction of (14 %) of sun's energy compared to visible light [6], so shift in optical response of TiO2 from UV range to visible range increases its practical use. It is needed to develop a TiO2 photocatalyst activated by visible light sensitive nanoparticles, which results in growth of photogenerated electrons in the conduction band of TiO2 [7].…”

TiO2‐Based Photocatalysis at the Interface with Biology and Biomedicine

“…Reports in this topic include the dechlorination of chlorobenzene to benzene (with core–shell Au@Pd/TiO 2 ), the reduction of dinitrobiphenyls, the degradation of nitrophenols, the oxidation of aromatic compounds, the oxidation of alcohols to aldehydes and ketones [with Au/TiO 2 anatase; Scheme , Eq. (1)] or the decarboxylative fluorination of carboxylic acids at room temperature with electrophilic fluorine reagents [Selectfluor, with P25; Scheme , Eq. (2)] …”

“… Examples of photocatalytic transformations with TiO 2 performed in aqueous media, and mechanisms proposed by the authors . The mechanism in Equation (1) is that proposed by the authors, but might need to be revised.…”

Estudo Do Efeito De Nanopartículas De Ouro Incorporadas Em Catalisadores De Dióxido De Titânio Sintetizados Através Do Processo Sol-Gel

“…Suas propriedades fotocatalíticas são derivadas da formação de portadores de cargas fotogeradas (lacuna e elétron) que ocorre após a absorção da luz em diferentes espectros, porém, correspondendo a banda de gap (Srikanth et al, 2017). Porém este semicondutor possui pequena fotoatividade na faixa do visível, restringindo apenas a faixa UV, de modo que a luz UV está em apenas 3-5% da luz solar total incidente, e a luz visível em quase 45% (Gogoi et al, 2017).…”