Shuichi Kamei
Adsorption Effect of Lead Ions for Photocatalyst in Ceria by Coprecipitation.
Kazunori Saro, Teoh Wah Tzu
With the arrival of the 21st century there has been an increasing demand for the development of eco-friendly materials for aqueous heavy metal treatment; photocatalysts appeared to be one of the promising candidates. 10 mol% La-doped ceria had been successfully prepared by carbonate co-precipitation method; single phase La-doped ceria appeared at calcination temperature as low as 400oC. The UV irradiated lead ion adsorption experiments showed that the amount of lead ion absorption decreased with the increased of calcination temperature. This was due to significant reduction of surface area for samples calcinated above 600oC. Of the investigated range, samples prepared with calcination temperature from 400oC-600oC showed better lead ion absorption as compared to 700oC-1000oC.
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