Preparation of Co/BiVO4 Photocatalyst and Its Effect on the Photosynthetic Activity of Cyanobacteria
SONG Weijun
XIE Yu
CHEN Qianhao
FAN Aini
Abstract：A visible-light-driven Co/BiVO4 photocatalyst was synthesized via a hydrothermal method using Co(NO3)2·6H2O as the cobalt source.SEM and XRD analyses revealed that Co doping influences the micro-morphology of the material,resulting in sharp diffraction peaks with narrow full width at half maximum(FWHM)and high crystallinity.XPS results confirmed the coexistence of Co3+and Co2+in the Co/BiVO4 structure.After Co doping,the absorption edge of the material shifted,and appropriate doping levels were found to narrow the visible-light bandgap while broadening the visible-light response range.With increasing Co doping content,the inhibition rate of Co/BiVO4 on the Fv/Fm stress in cyanobacteria reached 93.3％within 40 minutes.Both BiVO4 and Co/BiVO4 exhibited higher inhibition rates toward Y(Ⅱ)than toward Fv/Fm.Radical trapping experiments demonstrated that·O2-acts as the primary active species responsible for the inhibition of Fv/Fm and Y(Ⅱ)in algal cells,while h+showed the least inhibitory effect,and·OH exhibited a moderate contribution.
Keywords：Co/BiVO4photocatalysisFv/FmY(Ⅱ)fluorescence characteristics
Publication Date：2025-11-20
Online Publishing Date：2025-12-03(First online date of this platform, not the publication date of the document)
Pages：7( 44-50 )