摘要
以双核酞菁铁覆载碳纳米管(bi-FePc/MWNT)作为电催化剂,催化还原硝酸盐氮进行试验研究。在电流密度为2.3 mA/cm2,pH值为6.4,ρ(NO3--N)为20 mg/L条件下,反应20 h后ρ(NO3--N)变为13.7 mg/L,去除率达31.5%,具有良好的选择性。催化反应的活性和选择性受pH值、电流密度、催化剂用量的影响。
The catalytic reduction of nitrate in water was studied using bi-Fe phthalocyanine loaded on multi-walled carbon nanotubes （bi-FePe/MWNT） as electrocatalyst. The results showed that, bi-FePc/MWNT could catalyze to remove nitrate in the water and showed a good selectivity towards nitrogen. The concentration of NO3--N was reduced from 20 mg/L to 13.7 mg/L in current density of 2.3 mA/cm2, pH 6.4 and NO3--N of 20 mg/L in the prstine water after 20 h. The removing rate of nitrate was up to 31.5%. The catalytic activity and selectivity depended on pH value, current density and catalyst amount.
出处
《环境科技》
2012年第4期1-5,共5页
Environmental Science and Technology
基金
国家自然科学基金联合基金重点资助项目(11179001)
关键词
双核酞菁铁
催化剂
电催化还原
硝酸盐
脱氮
Bi-FePc
Catalyst
Electrocatalytic reduction
Nitrate
Denitrogenation
