Inactivation of Microcystis aeruginosa under visible light by Bi5O7I/g-C3N4 photocatalyst: Performance and optimization

Solar Light-Driven Molecular Oxygen Activation by BiOCl Nanosheets: Synergy of Coexposed {001}, {110} Facets and Oxygen Vacancies

“…In order to better understand the mechanism, we conducted radical scavenger experiments to determine the reactive oxygen species (ROS) generated by BiOCl nanosheets under solar light exposure (Figure b). We used AgNO 3 , KI, Benzoquinone (BQ), and isopropyl alcohol (IPA) to quench electrons (e – ), holes (h + ), superoxide anion radicals (O 2 ·– ), and hydroxyl radicals (·OH), respectively. , Figure b illustrates that AgNO 3 and BQ were most effective in inhibiting the production of H 2 O 2 by BiOCl NSs. The importance of the four reactive species was found to follow the order of electrons (e – ) > superoxide anion radicals (O 2 ·– ) ≫ holes (h + ) > hydroxyl radicals (·OH).…”

“…To gain a deeper understanding of the photocatalysis process, a series of controlled experiments were conducted (refer to Table and Figure S9). In these experiments, AgNO 3 was used as an electron scavenger, KI as a hole scavenger, BQ as a superoxide scavenger, and IPA as a hydroxyl radical scavenger . The presence of AgNO 3 led to a significant decrease in the yield of the desired product, indicating that the reaction follows a superoxide radical pathway.…”

“…In these experiments, AgNO 3 was used as an electron scavenger, KI as a hole scavenger, BQ as a superoxide scavenger, and IPA as a hydroxyl radical scavenger. 53 The presence of AgNO 3 led to a significant decrease in the yield of the desired product, indicating that the reaction follows a superoxide radical pathway. Similarly, the presence of BQ inhibited product formation.…”

“…), and hydroxyl radicals (•OH), respectively. 52,53 Figure 5b illustrates that AgNO 3 and BQ were most effective in inhibiting the production of H 2 O 2 by BiOCl NSs. The importance of the four reactive species was found to follow the order of electrons (e − ) > superoxide anion radicals (O 2 ), as depicted in Figures 5c and S6a.…”

Synthesis of invasive plant biochar catalyst with carbon nitride structure for peroxymonosulfate activation toward efficient ciprofloxacin degradation

“…The stretching vibrations of -CH 3 , -CH 2 -appeared at 2900 cm −1 . A broad peak between 3100 and 3600 cm −1 is due to the N-H and O-H stretching modes, which can be attributed to the N-H groups on the uncondensed surfaces and the absorbed H 2 O (Qiu et al 2024;Wen et al 2023).…”