| ABBREVIATION | 第6-7页 |
| 中文摘要 | 第7-8页 |
| Abstract | 第8-9页 |
| 1. Introduction | 第10-33页 |
| 1.1. Hazardous dye of Malachite green and Crystal violet | 第10-11页 |
| 1.2. Classification of dyes | 第11-14页 |
| 1.2.1. Azo dyes | 第13页 |
| 1.2.2. Anthraquinone dyes | 第13-14页 |
| 1.2.3. Triarylmethane dyes | 第14页 |
| 1.3. Dye removal techniques | 第14-24页 |
| 1.3.1. Biological methods | 第15-17页 |
| 1.3.2. Chemical methods | 第17-21页 |
| 1.3.3. Physical methods | 第21-24页 |
| 1.4. Adsorption of dyes by nanoparticles | 第24-31页 |
| 1.4.1. Nano zerovalent iron | 第25-26页 |
| 1.4.2. Nanomaterials with magnetic properties | 第26-27页 |
| 1.4.3. Nano magnesium oxide | 第27-28页 |
| 1.4.4. Graphene oxide and reduced graphene oxide based nanomaterials | 第28-31页 |
| 1.5 Modelling and optimization techniques | 第31页 |
| 1.6. Main objectives of the present work | 第31-33页 |
| 2. Preparation of reduced graphene oxide-supported bimetallic Fe/Ni composites (rGO/Fe/Ni) | 第33-43页 |
| 2.1. Experimental section | 第33-34页 |
| 2.1.1. Materials | 第33页 |
| 2.1.2. Experimental instruments | 第33-34页 |
| 2.2. Preparation of the nanomaterials | 第34页 |
| 2.2.1. Synthesis of graphene oxide (GO) | 第34页 |
| 2.2.2. Synthesis of Fe/Ni particles and rGO/Fe/Ni composites | 第34页 |
| 2.3. Characterization of the Commercially Available nZVZ and rGO/Fe/Ni | 第34-35页 |
| 2.4. Batch adsorption experiments | 第35-36页 |
| 2.5. Determine the zero point of charge of rGO/Fe/Ni composites | 第36-37页 |
| 2.6. Results and discussion | 第37-42页 |
| 2.6.1. Characterization of the commercially available nZVZ | 第37-38页 |
| 2.6.2. Characterization of rGO/Fe/Ni | 第38-41页 |
| 2.6.3 The zero point of charge for rGO/Fe/Ni composites | 第41-42页 |
| 2.7. Summary | 第42-43页 |
| 3. Modeling and optimization | 第43-67页 |
| 3.1. Modeling and Optimization by RSM | 第43-51页 |
| 3.1.1. Modeling and Optimization for MG removal onto nZVZ by RSM | 第43-46页 |
| 3.1.2. Modeling and Optimization for CV removal onto rGO/Fe/Ni composites by RSM | 第46-51页 |
| 3.2. Prediction by BP-ANN | 第51-59页 |
| 3.2.1 Prediction for the adsorption of MG onto the commercially available nZVZ byBP-ANN | 第53-56页 |
| 3.2.2. Prediction for the adsorption of CV onto rGO/Fe/Ni composites by BP-ANN | 第56-59页 |
| 3.3. Modelling and optimization by ANN-PSO and ANN-GA | 第59-64页 |
| 3.3.1. Modelling and optimization for the adsorption of MG onto the commerciallyavailable nZVZ by ANN-PSO and ANN-GA | 第61-62页 |
| 3.3.2. Modeling and optimization for the removal of CV by rGO/Fe/Ni composites usingANN-PSO and ANN-GA | 第62-64页 |
| 3.4. Comparison with RSM, ANN-PSO and ANN-GA | 第64-65页 |
| 3.4.1 The adsorption of MG onto the commercially available nZVZ | 第64页 |
| 3.4.2. The adsorption of CV onto rGO/Fe/Ni composites | 第64-65页 |
| 3.5. Summary | 第65-67页 |
| 4. Equilibrium isotherms, adsorption kinetic and adsorption thermodynamic | 第67-77页 |
| 4.1. Equilibrium Isotherms | 第67-71页 |
| 4.1.1. Equilibrium Isotherms for the adsorption of MG by the commercially availablenZVZ | 第68-69页 |
| 4.1.2. Equilibrium Isotherms for the adsorption of CV by rGO/Fe/Ni composites | 第69-71页 |
| 4.2. Adsorption kinetic | 第71-73页 |
| 4.2.1. Kinetic study for the adsorption of MG by the commercially available nZVZ | 第71-72页 |
| 4.2.2. Kinetic study for the adsorption of CV by rGO/Fe/Ni composites | 第72-73页 |
| 4.3. Thermodynamics study | 第73-75页 |
| 4.3.1. Thermodynamics study for the adsorption of MG onto the commercially availablenZVZ | 第73-74页 |
| 4.3.2. Thermodynamics study for the adsorption of CV by rGO/Fe/Ni composites | 第74-75页 |
| 4.4. Summary | 第75-77页 |
| 5. Conclusion | 第77-79页 |
| 6. Prospects | 第79-80页 |
| References | 第80-94页 |
| 附录 | 第94-96页 |
| 致谢 | 第96-97页 |
