双核酞菁铁覆载碳纳米管电催化还原水中硝酸盐氮的研究  

Catalytic Electrolysis Removal of Nitrate in Water by bi-FePc/MWNT

作　　者：胡晓明[1] 夏定国[1,2] 

机构地区：[1]北京工业大学环境与能源工程学院,北京100022 [2]北京大学工学院,北京100871

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)

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.

关 键 词：双核酞菁铁 催化剂 电催化还原 硝酸盐 脱氮 

分 类 号：X7[环境科学与工程—环境工程]