Semi-empirical study of ortho-cresol photo degradation in manganese-doped zinc oxide nanoparticles suspensions
| Autor: | Santo Banerjee, Hamid Reza Fard Masoumi, Majid Rezayi, Hossein Jahangirian, Azmi Zakaria, Yadollah Abdollahi, Abdul Halim Abdullah, Kamyar Shameli, Tahereh Abdollahi |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Optimization
Central composite design Chemistry(all) Semi-empirical Analytical chemistry Mn-doped ZnO nanoparticles chemistry.chemical_element Nanoparticle Manganese medicine Irradiation Lack-of-fit sum of squares Response surface methodology Photodegradation QD1-999 Simulation ANOVA Photo catalyst Modeling RSM General Chemistry Cresol Chemistry chemistry Photo degradation medicine.drug Research Article |
| Zdroj: | Chemistry Central Journal, Vol 6, Iss 1, p 88 (2012) Chemistry Central Journal |
| Popis: | The optimization processes of photo degradation are complicated and expensive when it is performed with traditional methods such as one variable at a time. In this research, the condition of ortho-cresol (o-cresol) photo degradation was optimized by using a semi empirical method. First of all, the experiments were designed with four effective factors including irradiation time, pH, photo catalyst’s amount, o-cresol concentration and photo degradation % as response by response surface methodology (RSM). The RSM used central composite design (CCD) method consists of 30 runs to obtain the actual responses. The actual responses were fitted with the second order algebraic polynomial equation to select a model (suggested model). The suggested model was validated by a few numbers of excellent statistical evidences in analysis of variance (ANOVA). The used evidences include high F-value (143.12), very low P-value (2 = 0.99) and the adequate precision (47.067). To visualize the optimum, the validated model simulated the condition of variables and response (photo degradation %) be using a few number of three dimensional plots (3D). To confirm the model, the optimums were performed in laboratory. The results of performed experiments were quite close to the predicted values. In conclusion, the study indicated that the model is successful to simulate the optimum condition of o-cresol photo degradation under visible-light irradiation by manganese doped ZnO nanoparticles. |
| Databáze: | OpenAIRE |
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