fig5

Figure 5. The PL lifetime mappings of single (A) BiVO₄ and (B) 3Au/BiVO₄ particle beforer and after adding TC solution to the reaction vessel; The τ_av with decay rate on representative points of (C) BiVO₄ and (D) 3Au/BiVO₄ particle in air and after adding TC solution; (E) PL intensity of Point 1 and Point 2 over BiVO₄ and 3Au/BiVO₄ particle before after adding TC solution. PL: Photoluminescence; BiVO₄: bismuth vanadate; TC: tetracycline.