【摘要】 采用较简单方法合成了光催化活性较低、吸附性能较好的纳米ZrO2及纳米Fe2O3,分别研究了两种纳米金属氧化物对Cr(VI)的吸附行为并进行了相应比较。结果表明,两种纳米金属氧化物对Cr(VI)的吸附酸度较宽,吸附效率较高,吸附时间短,吸附Cr(VI)后的纳米金属氧化物用2.0mol/LNaOH洗脱处理后均可重复使用,应用于环境水样中Cr(VI)的处理效果很好。同时,综合考虑两种金属氧化物对Cr(VI)吸附行为的差异及制备成本,认为纳米Fe2O3是更佳的Cr(VI)处理剂。更多还原

【Abstract】 Relatively simple methods were employed to synthesize nanometer-sized ZrO2 and Fe2O3 with lower photo catalytic activity but good adsorption capability. The adsorption behaviors of these two metallic oxides to Cr(VI) were studied and compared respectively. The results showed that both metallic oxides exhibited wider adsorption acidity, higher adsorption efficiencies and short adsorption times than that of Cr(VI). After being eluted with 2.0mol/L NaOH, both oxides that had adsorbed Cr(VI) could be used again. Cr(VI) in environmental water could be treated with them well. Considering the difference between their Cr(VI) adsorption behaviors and cost of preparation, nanometer Fe2O3 might be a better choice for treating Cr(VI).更多还原