| 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 Name | Affiliation | | 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 |
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| 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 |
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| Study on Degradation of Methylene Blue in Fenton-like System Using Sulfidated Zero-Valent Iron asCatalyst |
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| 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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