化工矿物与加工2025，Vol.54Issue(6)：57-64,8.DOI:10.16283/j.cnki.hgkwyjg.2025.06.007
基于α-Fe2O3纳米光催化剂的矿山废水中砷离子的高效去除
Efficient removal of arsenic ions from mine wastewater by α-Fe2O3 nano-photocatalyst
摘要
Abstract
Trivalent arsenic in mining wastewater has strong carcinogenicity,and it is difficult to achieve rapid removal using conventional methods.In this paper,α-Fe2O3 nanoparticles were synthesized by hydrothermal method.The α-Fe2O3 was systematically characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),diffuse reflectance spectroscopy(DRS)and other methods.The effects of sodium citrate dosage,hydrothermal time,α-Fe2O3 catalyst dosage,initial solution pH and concentration and other factors on the arsenic removal efficiency of α-Fe2O3 were also investigated.The results show that under the conditions of sodium citrate dosage of 0.2 g and hydrothermal time of 8 h,the prepared sample exhibited excellent photocatalytic performance;Under the condition of 0.05 g α-Fe2O3 catalyst dosage and low concentration alkaline solution containing As(Ⅲ),the removal rate of arsenic can reach 95%.The catalyst exhibits strong oxidizing properties under light irra-diation and has excellent adsorption performance,which can achieve rapid removal of trivalent arsenic;In addition,α-Fe2O3 nanomaterials also have good reusability.The research results can provide reference for efficient treatment of similar mining wastewater.关键词
α-Fe2O3/纳米材料/水热法/光催化剂/砷污染/矿山废水/柠檬酸钠/重金属Key words
α-Fe2O3/nanomaterials/hydrothermal method/photocatalyst/arsenic pollution/mining wastewater/sodium citrate/heavy metal分类
资源环境引用本文复制引用
张璐,雷大士,张艺瑶,彭祥玉,王宇斌..基于α-Fe2O3纳米光催化剂的矿山废水中砷离子的高效去除[J].化工矿物与加工,2025,54(6):57-64,8.基金项目
国家自然科学基金项目(52304192). （52304192）
