摘要
从黑土中提取铁、铝氧化物为主的无机纳米微粒,在紫外光照射下光催化还原Cr(Ⅵ),研究其行为及影响因素。结果表明:对50 mL反应液[(Cr(Ⅵ)质量浓度30 mg/L,黑土无机纳米微粒质量浓度6.5 mg/mL,H2SO40.5 mol/L]光照时间7 h,Cr(Ⅵ)的光催化还原率在90%以上,符合一级反应速率方程lnc=-0.366t+3.489。芳香族化合物对Cr(Ⅵ)的光催化还原有一定影响。
To study the factors affecting the behavior of inorganic nanoparticles in black soil, the experi- ment of extracting inorganic nanoparticles from black soil was conducted and the photocatalysis reduction Cr（ Ⅵ）of the nanoparticles was carried out under the irradiation of visible and ultraviolet hght. The results show that the best conditions for the reaction of photocatalysis reduction Cr （Ⅵ） of inorganic nanoparticles solution in black soil are： 0.5 mol/L H2SO4 of acidity, ρ = 30 mg/L in 50 mL of quantity density, 6.5 mg/mL of solution, and 7 h of illumination. Under these conditions, the rate of photocatal- ysis reduction Cr（Ⅵ） is above 90%. It accords with the first rate equation： lnc = -0.366 t ＋ 3.489. Aromatic compounds have an effect on photocatalysis reduction.
出处
《吉林农业大学学报》
CAS
CSCD
北大核心
2006年第5期556-559,共4页
Journal of Jilin Agricultural University
基金
吉林省教育厅资助项目(2005-96)
吉林省杰出青年基金资助项目(200242017)
吉林农业大学科研启动基金项目
关键词
黑土
纳米微粒
光催化还原
Cr(Ⅵ)
black soil
nanoparticles
photocatalysis reduction
Cr（ Ⅵ ）
