Fabrication of Ru loaded MgB2 with guar gum hybrid for photocatalytic degradation of crystal violet

Biopolymer Gellan-Gum-Based TiO2: A Green Alternative Photocatalyst Approach for Removal of Pollutants

“…The absorbance data vs. irradiation time show that the decrease in the concentration of GG in the composites presents with a lower absorbance value, which is reflected in the Figure 5 shows that an enhanced photo response was observed using 1GGT and the strong synergistic interaction between TiO 2 /gum molecules and the cationic surface of the dye, leading to maximum degradation [45,53,54]. Furthermore, the active sites are the atoms or faces of the crystal where the reaction occurs, so the number of photocatalytically active surface sites does not necessarily increase with the increasing surface area.…”

“…The effect of the interaction of light with the surface of the composites promotes the generation of reactive oxidizing species (ROS), such as the • OH capable of breaking down MB molecules adsorbed on the surface of the composites to degrade and produce less toxic species and/or by-products [52]. Figure 5 shows that an enhanced photo response was observed using 1GGT and the strong synergistic interaction between TiO2/gum molecules and the cationic surface of the dye, leading to maximum degradation [45,53,54]. Furthermore, the active sites are the atoms or faces of the crystal where the reaction occurs, so the number of photocatalytically active surface sites does not necessarily increase with the increasing surface area.…”

“…However, under certain conditions, a large surface area facilitates the dispersion of sites, improving photocatalytic activity independent of other factors [55]. It is believed that values above the mass ratio (3 and 5% GG) may result in a shortage of reactive sites and an increase in the agglomeration rate, thus, generating unavailability and, consequently, a decrease in degradation efficiency [45,53,54,56]. Therefore, the surface area is a crucial factor affecting the photocatalytic material performance [45].…”

2D Boron Nanosheets for Photo‐ and Electrocatalytic Applications

“…The TiB 2 ‐derived nanosheets could successfully degrade about 92 % of RhB within 90 min (Figure 13d) and ~54 % 4‐NP in 180 min. Also, MgB 2 ‐derived nanosheets were prepared from parent MgB 2 crystals via a chemical method similar to that used for TiB 2 ‐derived nanosheets [136] . Guar gum (GG) biopolymer and Ru precursor were added to the nanosheet dispersion in the presence of sonication.…”

“…for TiB 2 -derived nanosheets. [136] Guar gum (GG) biopolymer and Ru precursor were added to the nanosheet dispersion in the presence of sonication. MgB 2 /GG@Ru nanohybrid was obtained after subsequent centrifugation of the resulting mixture.…”