Selective photocatalytic oxidation of benzyl alcohol and its derivatives into corresponding aldehydes by molecular oxygen on titanium dioxide under visible light irradiation

Modelling and Simulation of the Radiant Field in an Annular Heterogeneous Photoreactor Using a Four-Flux Model

“…In the last decades, photocatalytic processes have been the subject of different studies such as wastewater treatment [1][2][3][4][5][6], air purification in polluted environments with volatile organic compounds [7][8][9], and synthesis of fine organic compounds such as benzaldehyde [10,11]. According to literature [1,[3][4][5][6][11][12][13][14][15][16], the following different variables are crucial in a photocatalytical process efficiency: (a) catalyst type and concentration, (b) reagent type and concentration, (c) geometry and type of reactor, and (d) characteristics of the radiation inside the photoreactor.…”

“…According to literature [1,[3][4][5][6][11][12][13][14][15][16], the following different variables are crucial in a photocatalytical process efficiency: (a) catalyst type and concentration, (b) reagent type and concentration, (c) geometry and type of reactor, and (d) characteristics of the radiation inside the photoreactor. Because of the number of variables and the interaction among them, the modeling of this type of processes is expected to be rather useful not only for reactor design but also to achieve a better insight and understanding of the process.…”

Modelling and simulation of photocatalytic oxidation mechanism of chlorohalogenated substituted phenols in batch systems: Langmuir–Hinshelwood approach

“…Different advanced oxidation process techniques utilise different method-specific mechanisms to achieve the degradation process [9][10]. Oxidation dehalogenation of chloride-substituted phenols has been the focus of numerous studies, included are those by Higashimoto et al [11], Minero et al [12] and Elsellami et al [13], these investigated the oxidation mechanisms of 4-chlorophenol and 2.4-dichlorophenol.…”

Wheat bran valorisation: Towards photocatalytic nanomaterials for benzyl alcohol photo-oxidation

“…Among various semiconductorbased photocatalysts, TiO 2 is one of the most attractive photocatalysts owing to its outstanding photocatalytic activity, high thermal and chemical stability, non-toxicity, cost effectiveness and the strong oxidizing power of the photogenerated holes. Massive investigations related to TiO 2 photocatalysts have been reported in different applications in the last decades, including chemicals and fuels production from CO 2 reduction (Adachi et al, 1994;Chen et al, 2015;Yu et al, 2014), decontamination of water (Herrmann et al, 1999;Hoffmann et al, 1995;Yang et al, 2008), organic synthesis (Colmenares et al, 2016;Higashimoto et al, 2009;Hubert et al, 2010;Ohno et al, 2003b) and production of H 2 from water splitting (Chen et al, 2010;Ni et al, 2007). However, the use of pure TiO 2 photocatalyst is limited by its large band gap (3.2eV, anatase crystalline phase) which requires light with wavelength l < 387 nm for the excitation of electrons from the valence to the conduction band, resulting that only 5% of the solar irradiation can be utilized for the photocatalytic process.…”

“…lignin). Photocatalytic oxidation of benzyl alcohol towards benzaldehyde with high selectivity has been reported in recent years (Colmenares et al, 2016;Higashimoto et al, 2009;Li et al, 2012;Marotta et al, 2011;Spasiano et al, 2013), which provide a possible substitution to the traditional synthetic routes -either by benzyl chloride hydrolysis or through oxidation of toluene. A review on the transformation of biomass-derived compounds with heterogeneous photocatalytic nanomaterials was also recently reported .…”