摘要
以钛酸四丁酯、无水乙醇、水、硫酸为原料,采用水热法合成TiO_2,并以活性黄+碱性品红染料混合废水为目标去除物,考察TiO_2和经硫酸修饰后的H_2SO_4-TiO_2对目标污染物的吸附性能及选择性。对材料进行了表征,结果表明,经硫酸修饰的TiO_2对活性黄、碱性品红染料的吸附得到明显强化,分别是纯TiO_2对活性黄、碱性品红染料饱和吸附量的4.893 4、1.203 7倍;在此混合废水中,H_2SO_4-TiO_2对活性黄染料去除表现出明显的选择性。
TiO_2 has been synthesized by hydrothermal meth od,using Ti(OC_4H_9)_4,C_2H_5OH,H_2O and H_2SO_4 as raw materials. Taking the dyestuff mixed wastewater reactive yellow X-R + basic fuchsine as target substances to be re-moved,the effects of TiO_2 before and after modified by H_2SO_4(H_2SO_4-TiO_2) on the adsorption capability and selectivity for the target pollutants have been investigated,and the materials characterized. The results show that the adsorption effects of H_2SO_4-TiO_2 on dyestuff reactive yellow X-R and basic fuchsine are enhanced significantly. Its saturated adsorption capacities for dyestuff reactive yellow X-R and basic fuchsine are 4.893 4 times and 1.203 7 times,respectively,of pure TiO_2. In the mixed wastewater,the removal of dyestuff reactive yellow X-R by H_2SO_4-TiO_2 has obvious selectivity.
引文
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