纳米TiO_2在废水处理中应用的研究进展

Study Progress on Wastewater Treatment with Namomaterial TiO_2

详细介绍了纳米TiO2在光电催化、改性掺杂光催化、电化学催化以及复合式吸附等废水处理中的应用情况,对紫外线照射激发光电催化的机理进行了阐述,并讨论了pH值,电解质、外加偏压和光照强度对紫外线照射激发光电催化的影响,对改性掺杂红移激发光催化的机理进行了阐述,并讨论了元素掺杂,催化剂用量,反应温度,初始浓度和pH值对改性掺杂光催化的影响,指出它们的联合应用是彻底降解多样性废水实现无害化的有效途径之一,并对纳米TiO2的催化应用前景进行了展望。

The using conditions and influencing factors of nanomaterial TiO2 that is employed with photoelectrocatalysis modification photocatalysis, electrocatalysis and composited absorption in the degradation process of wastewater were introduced. Mechanism of UV excitation photoelectric catalysis were introduced, the effect of applied bias voltage of electrolyte, pH, and light intensity on the excitation of ultraviolet irradiation on the photoelectrocatalytic, mechanism of modified doping red - shifted excitation light catalysis were introduced, and the modification photoc atalysis, the amount of catalyst, reaction temperature, initial concentration and the pH value of the modified doping photocatalytic were discussed, pointed out that the combined application of them was one of the effective approaches to harmless completely degraded diversity wastewater to achieve, and catalytic application of nanocrystalline TiO2 was described.