Preparation of TiO2/MIL-100(Fe)/nylon composite and its decolorization for organic dye
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摘要: 采用原位生长法，室温下将TiO2和MIL-100(Fe)负载在锦纶(PA)上，制备了TiO2/MIL-100(Fe)/PA复合材料。采用FTIR、SEM、EDS、XRD、TG等表征手段，证明TiO2/MIL-100(Fe)成功负载到PA上。探讨了光源、H2O2、染料结构、NaCl、pH值对TiO2/MIL-100(Fe)/PA复合材料脱色效果的影响。结果表明：在黑暗条件下，复合材料对活性黑KN-B染料有吸附脱色的效果。在模拟太阳光下加入H2O2，复合材料对不同的活性染料脱色率不同，对活性黑KN-B脱色率最高，活性艳红M-3BE次之，对活性艳蓝KN-R脱色率最差。染液中加入NaCl都会降低染料的脱色率，但影响不大。染液的pH值增加，染料的脱色率下降。
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关键词:
- MIL-100(Fe) /
- TiO2 /
- 光催化 /
- 染料脱色 /
- 锦纶(PA)
Abstract: TiO2/MIL-100(Fe)/PA composites were prepared by means of in-situ growth method loading TiO2 and MIL-100(Fe) on nylon (PA) at room temperature. FTIR, SEM, EDS, XRD and TG characterization methods were used to prove that TiO2/MIL-100(Fe) was successfully loaded on PA. The effects of light, H2O2, dye structure, sodium chloride and pH value on the decolorization of TiO2/MIL-100(Fe)/PA composite were discussed. The results show that the composite material has adsorption and decolorization effect for Reactive Black KN-B dye under dark condition. The decolorization rate of the composites for different reactive dyes is different under simulated solar light after adding H2O2. The decolorization rate for Reactive Black KN-B is the highest, followed by Reactive Brilliant Red M-3BE and Reactive Brilliant Blue KN-R. The decolorization rate can be reduced by adding NaCl in the dye solution, but the effect is not significant. The decolorization rate is decreased with the increase of pH value of dye solution.-
Key words:
- MIL-100(Fe) /
- TiO2 /
- photocatalysis /
- dye decolorization /
- nylon(PA)
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图 1 PA、MIL-100(Fe)和TiO2/MIL-100(Fe)/PA的FTIR图谱
Figure 1. FTIR spectra of PA, MIL-100(Fe) and TiO2/MIL-100(Fe)/PA
图 2 PA、MIL-100(Fe)和TiO2/MIL-100(Fe)/PA的XRD图
Figure 2. XRD patters of PA, MIL-100(Fe) and TiO2/MIL-100(Fe)/PA
图 4 PA (a) 和TiO2/MIL-100(Fe)/PA (b) 的SEM图像和EDS图谱
Figure 4. SEM images and EDS spectra of PA (a) and TiO2/MIL-100(Fe)/PA (b)
图 5 不同材料黑暗条件下对活性黑KN-B染料的脱色效果
Figure 5. Decolorization effect to reactive black KN-B dye of different materials in dark
图 6 不同材料黑暗条件下加入 H2O2对活性黑KN-B染料的脱色效果
Figure 6. Decolorization effect to Reactive Black KN-B with adding H2O2 of different materials in dark
图 7 不同材料光照条件下加入 H2O2 对活性黑KN-B染料脱色效果
Figure 7. Decolorization effect to Reactive Black KN-B with adding H2O2 of different materials under light condition
图 8 TiO2/MIL-100(Fe)/PA复合材料重复使用的脱色效果
Figure 8. Decolorization effect of reuse of TiO2/MIL-100(Fe)/PA composites
图 9 活性黑KN-B、活性艳红M-3BE和活性艳蓝KN-R的分子结构式
Figure 9. Molecular structure of Reactive Black KN-B, Reactive Brilliant Red M-3BE and Reactive Brilliant Blue KN-R
图 10 光照条件下TiO2/ MIL-100(Fe)/PA复合材料对不同染料的自降解
Figure 10. Self degradation of different dyes of TiO2/ MIL-100(Fe)/PA composites under light condition
图 11 TiO2/ MIL-100(Fe)/PA复合材料对不同染料的脱色效果
Figure 11. Decolorization effect of different dyes of TiO2/ MIL-100(Fe)/PA composites
图 12 活性黑KN-B染液脱色前后TiO2/ MIL-100(Fe)/PA复合材料的紫外可见吸收光谱
Figure 12. UV-vis spectra of TiO2/ MIL-100(Fe)/PA composites reactive black KN-B before and after decolorization
图 14 活性艳蓝KN-R染液脱色前后TiO2/ MIL-100(Fe)/PA复合材料的紫外可见吸收光谱
Figure 14. UV-vis spectra of TiO2/ MIL-100(Fe)/PA composites reactive brilliant blue KN-R before and after decolorization
图 13 活性艳红M-3BE染液脱色前后TiO2/ MIL-100(Fe)/PA复合材料的紫外可见吸收光谱
Figure 13. UV-vis spectra of TiO2/ MIL-100(Fe)/PA composites reactive brilliant red M-3BE before and after decolorization
图 15 染液中NaCl用量对TiO2/ MIL-100(Fe)/PA复合材料对活性黑KN-B脱色效果的影响
Figure 15. Effect of NaCl addition on decolorization of TiO2/ MIL-100(Fe)/PA composites reactive black KN-B
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