以硫化纳米零价铁为催化剂类芬顿体系降解亚甲基蓝的研究
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引用本文:王彦云,李盟,汪天霄,张书彬,郭昕,陈胜文,王利军.以硫化纳米零价铁为催化剂类芬顿体系降解亚甲基蓝的研究[J].上海第二工业大学(英文版),2021,(3):204-211
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Author NameAffiliation
WANG Yan-yun School of Resource and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, China 
LI Meng School of Resource and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, China 
WANG Tian-xiao School of Resource and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, China 
ZHANG Shu-bin School of Resource and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, China 
GUO Xin School of Resource and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, China 
CHEN Sheng-wen School of Resource and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, China 
WANG Li-jun School of Resource and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, China 
中文摘要:采用硼氢化钠液相还原法, 以 Na2S 为硫源, FeSO4 为铁源, 通过一步法制备硫化纳米零价铁 (sulfidated zero-valent iron, S-nZVI), 利用 X 射线衍射仪 (X-ray diffraction, XRD)、扫描电子显微镜 (scanning electron microscopy, SEM) 对 S-nZVI 进行表征。并考察以 S-nZVI 为催化剂类芬顿 (Fenton) 体系降解亚甲基蓝 (methylene blue, MB) 的 性能研究和影响因素。SEM 和 XRD 结果显示 S-nZVI 具有片状结构, 主要成分为零价铁并含有少量的 FeS 和铁氧 化物。MB 降解研究表明, 以 S-nZVI 为催化剂的类 Fenton 体系对 MB 具有良好的降解性能, 有效解决了传统 Fenton 体系 pH 适用范围窄的问题, pH 范围从 3~5 拓宽至 3~9。当溶液初始呈近中性 (pH=6) 时, 该体系对 MB 的降解率 为 80%; 当溶液呈碱性时 (pH=9), MB 的降解率仍在 70% 以上。
中文关键词:硫化纳米零价铁  催化剂  亚甲基蓝  非均相芬顿
 
Study on Degradation of Methylene Blue in Fenton-like System Using Sulfidated Zero-Valent Iron asCatalyst
Abstract:The sulfidated zero-valent iron (S-nZVI) was prepared by one-step process using Na2S as the sulfur source and FeSO4 as the iron source by liquid-phase reduction with sodium borohydride. The properties of S-nZVI were studied by X-ray diffraction (XRD) and scanning electron microscope (SEM). The performance and influencing factors of methylene blue (MB) degradation using S-nZVI as a catalyst Fenton system were investigated. SEM and XRD results show that S-nZVI has a flake structure and is mainly composed of zero-valent iron with small amounts of FeS and iron oxides. The results of MB degradation show that the Fenton-like system with S-nZVI as the catalyst effectively solves the problem of the narrow application range of the traditional Fenton system, and the pH range is widened from 3~5 to 3~9. When the solution is initially nearly neutral (pH=6), the degradation rate of MB by this system is 80%, when the solution is alkaline (pH=9), the degradation rate of MB is still above 70%.
keywords:sulfide zero-valent iron  catalyst  methylene blue  heterogeneous Fenton
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