L-lysine mediated facile synthesis of SnO2-biochar nanocomposite and its excellent photocatalytic activity for the reduction of Cr(VI) and degradation of acid yellow 23 dye

Recent advancements in CaFe2O4-based composite: Properties, synthesis, and multiple applications

“…The photocatalytic mechanism is considered one of the best methods to chemically reduce heavy metal ions due to its exceptional features like recyclability and low cost The most effective way to reduce Cr(VI) is to convert it to the least harmful Cr(III). 81 CFNPs (size 34 nm) fabricated by the nitrate route significantly reduce Cr(VI). According to the literature, CF is an n-type semiconductor with a negative V SCE flat band potential (Figure 9), which is convenient for exchanging electrons with chromate species because of its cathodic behavior.…”