High-performance optofluidic membrane microreactor with a mesoporous CdS/TiO 2 /SBA-15@carbon paper composite membrane for the CO 2 photoreduction

Use of an optofluidic microreactor and Cu nanoparticles synthesized in ionic liquid and embedded in TiO2 for an efficient photoreduction of CO2 to methanol

“…Before spraying the photoactive materials, poly-tetrafluoroethylene (PTFE) was sprayed on the other side of the carbon paper (1 mg•cm -2 ) followed by calcination at 360 ºC for 1 h in air. This allows to increase the hydrophobicity of the material and prevents water leakage [19,20]. Thus, the developed Cu/TiO2 carbon papers perform the separation between the liquid and gas phases in the microchambers when using a two-compartment configuration.…”

“…In fact, planar microreactor configurations have already exhibited superior performance in various photocatalytic processes, such as water splitting [16] or wastewater treatment [17]. To date, however, few works applied this microreactor configuration to carry out numerical simulations [18] or experimental analyses [12,[19][20][21] for the photocatalytic conversion of CO2. Besides, only one of these previous reports takes advantage of the use of Cu/TiO2-based materials (i.e.…”

The solvent-driven formation of multi-morphological Ag–CeO2plasmonic photocatalysts with enhanced visible-light photocatalytic reduction of CO2

“… 4–6 Aiming to promote industrial applications of VLPCR, a key challenge is exploring for suitable photocatalysts with high stability and photocatalytic efficiency. 7,8 Until now, quite a number of photocatalysts have been investigated as candidates for VLPCR including TiO 2 , CdS, BiVO 4 , g-C 3 N 4 , et al 9–12 However, problems such as low incident visible-light utilization and fast electron–hole recombination still need to be improved. 13–15 …”

Porous TiO2 thin film-based photocatalytic windows for an enhanced operation of optofluidic microreactors in CO2 conversion

“…In spite of this, their application in the challenging CO 2 -to-methanol reaction is still scarce ( Albo and García. 2021 ; Cheng et al., 2017a , 2017b , 2019 ; Chen et al., 2017 ). Moreover, the stability issue with longer periods of light irradiation is usually attributed to the reduction in the ability to absorb light due to particle detachment and the formation of intermediate un-desorbed products that block the active sites ( Albo et al., 2021 ).…”