<i>In situ</i> real-time assessment of wavelength dependent degradation of methyl orange on rGO-TiO₂ photocatalyst.

ABSTRACT: Titanium dioxide (TiO₂) has been extensively incorporated with reduced graphene oxide (rGO) to synthesize visible light (Vis) active photocatalysts. Here, we synthesized such rGO-TiO₂ nanocomposite with 10% rGO by mass. The photocatalytic activity of rGO-TiO₂ was quantitatively evaluated using quartz crystal microbalance (QCM). The in situ real-time QCM data resulted in different photocatalytic degradation percentages of methyl orange (MO) at the solid-air interface under ultraviolet (UV) and Vis irradiations. Conventional UV-Vis studies at the solid-liquid interface revealed that a unique hypsochromic effect occurs selectively under Vis irradiation. Radical scavenger studies confirmed that photogenerated holes are the primary active species contribu

SUBMITTER: Manuda KRJ 

PROVIDER: S-EPMC12018108 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature