利用木质素磺酸钠制备生物质炭/ZnO/ZnS三元复合材料及其吸附性能

Sodium lignosulfonate guiding synthesis of biochar/ZnO/ZnS ternary composite and its adsorption performance

以制浆造纸副产物木质素磺酸钠(Sodium lignosulfonate,SL)为碳源和硫源,与醋酸锌(Zn(Ac)_(2))反应制成有机/无机杂化材料,烧结后得到生物质炭(Biochar,BC)和ZnO/ZnS的复合材料,标记为BC/ZnO/ZnS。采用X射线衍射(X-ray diffraction,XRD)、扫描电子显微镜(Scanning electron microscopy,SEM)和X射线光电子能谱(X-ray photoelectron spectroscopy,XPS)等表征手段对BC复合材料的结构和形貌进行了分析,并充分研究了其吸附性能。结果表明,当SL与Zn(Ac)_(2)质量投料比为1∶2时,所制备的BC/ZnO/ZnS对有机污染物亚甲基蓝和阿莫西林具有最佳的去除性能,其最大吸附量分别达到166.11和185.53 mg·g^(-1)。

A ternary composite biochar(BC)/ZnO/ZnS,labeled as BC/ZnO/ZnS,was fabricated by sodium lignosulfonate(SL)and zinc acetate(Zn(Ac)_(2))via a facile method.As a byproduct of pulping and papermaking,SL worked as carbon and sulfur source.X-ray diffraction(XRD),scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS)were used to characterize the micro-structure and morphology of prepared BC/ZnO/ZnS composite.The adsorption property of the composite was fully studied.The results show that BC/ZnO/ZnS has optimal adsorption performance when the mass feeding ratio of SL and Zn(Ac)_(2) reaches 1∶2.The maximum adsorption capacities can reach 166.11和185.53 mg·g^(-1) for methylene blue and amoxicillin,respectively.