【摘要】 以焦炭为载体,Na2S iO3为粘结剂,制备了负载型铁改性纳米TiO2光催化剂,并研究了该催化剂在太阳光照射下降解亚甲基兰染料废水的效果,通过正交和单因素优化试验,探讨了影响染料废水降解效果的主要因素,研究结果表明,影响降解因素的大小次序是:煅烧时间>铁掺杂量>Na2S iO3质量百分比>煅烧温度。本光催化剂制备的最佳制备条件是:以20%的Na2S iO3溶液为粘结剂,掺杂2%的Fe,400℃煅烧温度下煅烧3 h。以太阳光为光源,亚甲基兰染料废水的降解率可达到87.1%。更多还原

【Abstract】 Immobilized Fe doped nanosized TiO₂ photocatalyst were prepared by using coke as carrier,Na₂SiO₃ as adhensive,and their degradation effect on methylene blue wastewater in sunlight was studied.Through the orthogonal test and single factor experiments,it was found that the importance order of major impacted factors was: calcining time>doped Fe quantity>Na₂SiO₃ weight percent>calcining temperature;the optimal preparation conditions were: calcining temperature 400 ℃,adhensive aqueous weight percent 20%,calcining time 3 h,Fe doped quantity 2%.In sunlight,photocatalyst’s highest degradation rate was 87.14%.更多还原