Abstract
SnO2 and Mn-doped SnO2 were successfully prepared by wet chemical synthetic route. The understanding of substituted Mn into SnO2 leads to transfer the energy band gap by small amount of metal dopant. Fourier transform infrared and X-ray diffraction were used to determine chemical bonding and crystal structure, respectively. It showed that small amount of Mn can be completely substituted into SnO2 lattice. 40%wt of Mn was completely substituted. EDX was used to confirm the existence of Mn-doped SnO2. Scanning electron microscope revealed that their particles exhibits blocky particle with irregular sharp. The efficiency of SnO2 and Mn-doped SnO2 was investigated on the photocatalytic activity on methylene blue degradation for 4h. The photocatalytic activity of SnO2 and Mn-doped SnO2 exhibited the excellent performance in wastewater treatment in textile industry.
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