超结构碳催化剂催化过硫酸盐降解间甲酚性能研究

Study on catalytic performance of superstructural carbon catalyst for m-cresol degradation by persulfate

以薯渣为原料,经碳化处理后采用原位合成法制备了氮掺杂碳纳米管超结构碳(Ni-NCNT/PC)催化剂。采用电子显微镜(SEM)、X射线光电子能谱(XPS)、电感耦合等离子体发射光谱(ICP-MS)对Ni-NCNT/PC的形貌、结构和元素形态进行了表征。结果表明,该催化剂具有微、介孔结构,表面生长了大量的碳纳米管,形成了具有较高稳定性的NiN结构,限域结构对过渡金属具有较强的锚定作用,可以很好地防止催化剂中活性组分的流失。以间甲酚为降解目标污染物,推断了催化剂对过硫酸盐催化氧化间甲酚的机理。

Nitrogen-doped carbon nanotubes superstructural carbon(Ni-NCNT/PC) catalyst was prepared by in-situ synthesis method from potato residue after carbonization. The morphology, structure and elemental speciation of Ni-NCNT/PC were characterized by SEM,XPS and ICP-MS. The results showed that Ni-NCNT/PC had micro-mesoporous porestructure, a large number of carbon nanotubes growed on the surface, and NiNstructure with high stability was formed. The domain structure had a strong anchor effect on the transition metal, which could well prevent the loss of active components in catalysts. Taking m-cresol as the target degradation pollutant, the mechanism of catalytic oxidation of m-cresol by persulfate was inferred.