硼、氮掺杂碳纳米管对苯酚废水催化降解的差异  

Differences in catalytic degradation of phenol wastewater with boron and nitrogen doped carbon nanotubes

作　　者：梁丹丹 李兴发 王朝旭[1] Liang Dandan;Li Xingfa;Wang Chaoxu(College of Environmental Science and Engineering,Taiyuan University of Technology,Jinzhong 030600,China)

机构地区：[1]太原理工大学环境科学与工程学院,山西晋中030600

出　　处：《工业水处理》2021年第9期86-91,共6页Industrial Water Treatment

基　　金：山西省自然科学基金(2016021133);山西省高等学校科技创新项目(2019L0241)。

摘　　要：用硼元素和氮元素分别对碳纳米管进行掺杂,将制备的无金属催化剂活化过一硫酸盐(PMS)用于处理苯酚废水。结果表明,氮掺杂碳纳米管活化PMS对苯酚的降解效果略优于硼掺杂碳纳米管的催化效果。当pH为3~11时,氮掺杂碳纳米管的一级动力学常数大约是硼掺杂碳纳米管的2倍。造成两者催化活性差异的原因与缺陷程度、掺杂形式、催化反应过程以及活性物质的种类有关。Carbon nanotubes were doped with boron and nitrogen respectively,and the metal-free catalyst prepared from them was used to activate peroxymonosulfate(PMS)for the catalytic degradation of phenol wastewater.The re-sults showed that the catalytic degradation effect of PMS activated by nitrogen-doped carbon nanotubes was slightly better than that of boron-doped carbon nanotubes.When pH was at 3 to 11,the first-order kinetic constant of nitro-gen-doped carbon nanotube was approximately twice that of boron-doped carbon nanotube.The reasons for the di-fference between the two catalysts may be related to the degree of defects,the form of doping elements,the catalytic reaction process and the types of reactive species.

关 键 词：高级氧化 碳纳米管 无金属催化剂 苯酚废水 过一硫酸盐 

分 类 号：X703.1[环境科学与工程—环境工程]