What is it about?
The role of Cl on the formation of CdMoO4 microspheres were elucidated in detail. As chloride was taken into the hydrothermal process, CdMoO4 microspheres were successfully obtained. The Cl absorbed on the surface of the CdMoO4 microspheres could inhibit the Ostwald ripening process of CdMoO4 microspheres and it could retard the process of CdMoO4 microspheres transforming to CdMoO4 particles. The CdMoO4 microspheres obtained at 240 C were the smallest and most porous, which meant a relatively large reaction area. So the photocatalytic activity of CdMoO4 microspheres obtained at 240 C was the best of all. Kinetic studies using the radical scavenger technologies suggested that OH_ was not the dominant photooxidant. Direct hole photooxidation was responsible for the CdMoO4 microspheres photocatalysis.
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Why is it important?
According to the electronic structures of CdMoO4 reported by Abraham et al., CdMoO4 might possess excellent photocatalytic activity and photoluminescence properties due to its electronic versatility, reactivity, and stability. Therefore, the development of a facile and effective route for synthesizing CdMoO4 with high photocatalytic activity is of great importance to the potential studies of its physical and chemical properties.
Perspectives
In this work, the chloride ion was taken into the hydrothermal synthesis of CdMoO4. Because of chemical adsorption of Cl, the Ostwald ripening process of CdMoO4 was inhibited, and the CdMoO4 microspheres were successfully obtained. CdMoO4 microspheres synthesized by hydrothermal method had not been reported compared with previous work. The effects of temperature and pH value on the formation of CdMoO4 microspheres were further studied. In addition, the photocatalytic activities and degradation mechanism of CdMoO4 microspheres in the degradation of methylene blue under ultraviolet light irradiation were investigated in detail.
Dr Di Li
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This page is a summary of: Synthesis of CdMoO4microspheres by self-assembly and photocatalytic performances, CrystEngComm, January 2012, Royal Society of Chemistry,
DOI: 10.1039/c1ce05838j.
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