Mercury oxide as an efficient photocatalyst for degradation of rhodamine B dye under visible-light irradiation |
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| Affiliation: | 1. Research Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China;2. School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China;3. Second Clinical Hospital of Shanxi Medical University, Taiyuan 030006, China;4. Tai Yuan City Central Hospital, Taiyuan 030000, China |
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| Abstract: | In this work, a new visible-light-responsive photocatalyst, mercury oxide (HgO) was successfully developed. Its activity is significantly higher than that of the highly efficient photocatalyst, Ag3PO4 in degradation of rhodamine B (RhB) dye under irradiation of visible light. The HgO photocatalyst can be reused for at least three cycles without obvious loss of its activity in the degradation experiments. It was found that the RhB degradation rate is significantly influenced by the dye solution pH. The ultrahigh photocatalytic activity of HgO is attributed to its strong oxidization-ablility of the photogenerated holes, and high separation-possibility of the photogenerated carriers. |
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| Keywords: | Semiconductors Photocatalysis Mercury oxide Degradation Dye |
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