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http://dx.doi.org/10.14478/ace.2015.1103

Synthesis of PbMo1-xCrxO4 Oxides Prepared Using Hydrothermal Process and their Photocatalytic Activity  

Song, Young In (Department of Chemical Engineering, Pukyong National University)
Hong, Seong-Soo (Department of Chemical Engineering, Pukyong National University)
Publication Information
Applied Chemistry for Engineering / v.26, no.6, 2015 , pp. 714-718 More about this Journal
Abstract
Both lead molybdate ($PbMoO_4$) and chromium substituted lead molybdate ($PbMo_{1-x}Cr_xO_4$) were successfully synthesized using a conventional hydrothermal method and characterized by XRD, DRS, Raman, SEM and PL. We also investigated the photocatalytic activity of these materials for the decomposition of rhodamine B under UV-visible irradiation. The XRD and Raman results revealed the successful synthesis of well-crystallized $PbMoO_4$ crystals with the diameter of 51-59 nm, regardless of the addition of chromium ion. The DRS spectra of $PbMo_{1-x}Cr_xO_4$ catalysts showed new intensive absorption bands in the visible region. The $PbMoO_4$ catalysts showed the lowest photocatalytic activity and the activity increased with an increase of chromium substitution amounts under visible irradiation. PL peaks appeared at about 540-580 nm for all catalysts and excitonic PL signals were proportional to the photocatalytic activity for the decomposition of rhodamine B.
Keywords
$PbMoO_4$ and $PbMo_{1-x}Cr_xO_4$ catalysts; hydrothermal process; photocatalytic decomposition of Rhodamine B;
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