PbMoO4 촉매에서 Rhodamine B의 광분해 반응

Abstract

Lead molybdate(PbMoO4) were successfully synthesized using a microwave-assisted method and characterized by XRD, FT-Raman, SEM, PL and DRS. We also investigated the photocatalytic activity of these materials for the decomposition of Rhodamin B under UV-light irradiation. From XRD and FT-Raman results, well-crystallized PbMoO4 crystals have been successfully synthesized with the microwave-assisted hydrothermal method and had 42-52 nm particle size. The PbMoO4 catalysts prepared using microwave-assisted process enhanced the photocatalytic activity when compared to that prepared by hydrothermal method and the catalysts prepared at pH of solution=11 and 105℃ showed the highest photocatalytic activity. The PL peaks appears at about 540 nm at all catalysts and it was also shown that the excitonic PL signal is proportional to the photocatalytic activity for the decomposition of Rhodamin B. SEM analysis confirmed the results of the structure of the catalyst was well. Cr ion substitute PbMoO4 catalysts were used to examine the photocatalytic decomposition of Rhodamin B under visible light irradiation. They showed a good photocatalytic activity under visible light irradiation.