التفاصيل البيبلوغرافية
| العنوان: |
Photocatalytic Degradation of Rhodamine B Using MnO2 and ZnO Nanoparticles |
| المؤلفون: |
Chan, Yim Leng, Pung, Swee Yong, Hussain, Nur Syafiqah, Sreekantan, Srimala, Yeoh, Fei Yee |
| المصدر: |
Materials Science Forum; May 2013, Vol. 756 Issue: 1 p167-174, 8p |
| مستخلص: |
The oxide semiconductor with different band gap energy i.e. manganese dioxide (MnO2) (Eg: 1.30eV) and zinc oxide (ZnO) (Eg: 3.37 eV) nanoparticles were used to degrade RhodamineB (RhB) under irradiation of UV light (254 nm).The MnO2 nanoparticles were synthesized by hydrothermal method (160 oC, 4 h) using analytical grade manganese sulfate hydrate and potassium permanganate (VII) as precursors. The XRD analysis reveals that the nanoparticles were d-MnO2.The photocatalytic study shows that degradation of RhB solution by ZnO nanoparticles (rate constant: 0.02749 min-1) was approximately four times faster than the d-MnO2 nanoparticles (rate constant:0.0067 min-1). This observation could be attributed to the higher reducing and oxidizing power of ZnO in producing free radicals for photodegradation of RhB solution. |
| قاعدة البيانات: |
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