酸性溶液中Fe2+ /Fe3+相互转换对电极还原行为的影响

doi:10.13208/j.electrochem.161129

电化学（中英文） ›› 2017, Vol. 23 ›› Issue (6): 702-707. doi: 10.13208/j.electrochem.161129

酸性溶液中Fe²⁺ /Fe³⁺相互转换对电极还原行为的影响

秦建新*，林峰，刘文平，陈超，任孟德

中国有色桂林矿产地质研究院广西超硬材料重点实验室，国家特种矿物材料工程技术研究中心，广西桂林 541000

收稿日期:2016-11-29 修回日期:2017-03-03 出版日期:2017-12-28 发布日期:2017-03-30
通讯作者: 秦建新 E-mail:qdqinjianxin@163.com
基金资助:
广西科技计划基地和人才专项(重点实验室建设项目, No.16-380-35):资助

Effect of Fe²⁺/Fe³⁺Interconvertion on Reduction Behavior of Fe³⁺in Acidic Electrolytes

QIN Jian-xin^*, LIN Feng, LIU Wen-ping, CHEN Chao, REN Meng-de

Guangxi Key Laboratory of super-hard material, National Special Mineral Materials Engineering Technology Research Center, China Nonferrous Metals (Guilin) Geology and Mining Co., Ltd. Guilin 541004, China

Received:2016-11-29 Revised:2017-03-03 Published:2017-12-28 Online:2017-03-30
Contact: QIN Jianxin E-mail:qdqinjianxin@163.com

摘要/Abstract

摘要：

采用线性扫描伏安法和循环伏安法研究了含有Cl^-、SO₄^2-的酸性溶液中Fe²⁺/Fe³⁺相互转换对电极反应和Fe³⁺还原过程的影响. 结果表明: [Fe]_T=1 mol·L-1条件下，溶液中Fe³⁺/Fe²⁺的还原析出过程经过两个阶段：(1) E=0.35 V左右Fe³⁺还原成Fe²⁺过程; (2) E=-0.3 V之后H+的还原同时Fe²⁺离子与OH^-相结合生产Fe(OH)₂; Fe³⁺/Fe²⁺的相互转化主要影响Fe³⁺的第一还原阶段的还原峰电流和峰电位. |ipa/ipc|值随c(Fe³⁺ )/c(Fe²⁺ )增大而增大，且扫描速度慢时影响大，扫描速度快时影响小; 0.50 mol·L^-1 Fe²⁺+0.50 mol·L^-1 Fe³⁺时，随扫描速率的变化|ipa/ipc|值变化最小(|i_pa/i_pc|≈1.20). 同时，c(Fe³⁺ )/c(Fe²⁺ )也影响平衡电位，平衡电位随c(Fe³⁺ )/c(Fe²⁺ )增大而正移，电位从E₁=0.501 V升至E₅=0.565 V.

关键词: Fe²⁺/Fe³⁺相互转换, 循环伏安, 极化曲线, 还原行为

Abstract: The influences of ferrous/ferric (Fe²⁺/Fe³⁺) interconvertion on electrochemical reduction and electrode reaction of Fe³⁺ were investigated by using linear sweep voltammetry, potentiostatic method and cyclic voltammetry (CV) in acidic electrolytes containing chloride ion (Cl^- ) and sulfate ion (SO₄^2-). It was shown that the reduction process of Fe³⁺/Fe²⁺ would take place in two independent stages: (1) the reduction of Fe³⁺ to Fe²⁺ at E=0.35V and (2) the co-precipitation of Fe²⁺ by forming Fe(OH)₂ (E≤-0.3 V) instead of Fe. The major effect of Fe²⁺/Fe³⁺ interconvertion on the reduction is the |ipa/ipc| of quasi-reversible and equilibrium potential in the first stage. Practically speaking, the |ipa/ipc| values increased with the increase of c(Fe³⁺ )/c(Fe²⁺ ), and the values of |ipa/ipc| at fast sweep rates were less strongly affected than those at slow sweep rates. The least variation in |ipa/ipc| (|i_pa/i_pc|≈1.20) with sweep rate was observed in 0.50 mol·L^-1 Fe²⁺ and 0.50 mol·L^-1 Fe³⁺ solutions. Meanwhile, the equilibrium potential was also affected by c(Fe³⁺ )/c(Fe²⁺ ). The equilibrium potential shifted more positively from E₁=0.501 V in No. ① to E₅=0.565 V in No. ⑤ among the five samples studied in this work.

Key words: Fe²⁺/Fe³⁺interconvertion, cyclic voltammetry, polarization curve, reduction behavior

中图分类号:

O646.5

秦建新，林峰，刘文平，陈超，任孟德. 酸性溶液中Fe²⁺ /Fe³⁺相互转换对电极还原行为的影响[J]. 电化学（中英文）, 2017, 23(6): 702-707.

QIN Jian-xin, LIN Feng, LIU Wen-ping, CHEN Chao, REN Meng-de. Effect of Fe²⁺/Fe³⁺Interconvertion on Reduction Behavior of Fe³⁺in Acidic Electrolytes[J]. Journal of Electrochemistry, 2017, 23(6): 702-707.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.161129

https://electrochem.xmu.edu.cn/CN/Y2017/V23/I6/702

参考文献

[1] Shi Y H(史艳华). Effect of Fe²⁺ concentration on the electrodeposition Fe-Ni coating on 20 steel[J]. Journal of University of Science and Technology Beijing(北京科技大学学报). 2011, 33(3):313-317

[2] Maria Poroch-Seritan, Lgor Cretescu, Corneliu Cojocaru,et al. Experimental design for modelling and multi-response optimization of Fe–Ni electroplating process[J]. Chemical Engineering Research and Design，2015, 4(96):138-149.

[3] Ju-Hwan Kim, TaiHong Yim, Jae-Ho Lee. Effects of bath and operating conditions on the composition of Ni–Fe alloy electroplating for solar cell substrate[J]. Current Applied Physics, 2013, 13(2):S108-S110.

[4] Mingming Lan, Huiqin Li, Weihua Huang, et al. Effect of cathode vibration and heat treatment on electromagnetic properties of flake-shaped diatomite coated with Ni–Fe alloy by electroplating[J]. Journal of Magnetism and Magnetic Materials, 2015, 377:243-251.

[5] MH Seo, JK Dong, JS Kim. The effects of pH and temperature on Ni–Fe–P alloy electrodeposition from a sulfamate bath and the material properties of the deposits[J]. Thin Solid Films, 2005, 489(1–2):122-129.

[6] Tian H(田华).Study on iron electroplating and Fe-SiC composite electroplating technices[D]. Qingdao: Qingdao University of Science and Technology(青岛科技大学),2009.11-17.

[7] Zhou Y M(周雍茂),LIU M(刘铭). Potential-pH diagrams for the Fe-H₂O system based on the principle of simultaneous equilibrium [J]. Journal of Changsha university of Science and Technology(Natural Science)长沙理工大学学报(自然科学版), 2004, 1(2):89-92.

[8] Caldcron E H, Wuthrich, Mandin P, et al. Estimation of the effectiveness factor of an outer-sphere redox couple (Fe²⁺/Fe³⁺) using rotating disk Ti/IrO₂ electrodes of different loading[J]. Journal of applied electrochemistry, 2009, 39(8):1379-1394.

[9] Derek Pletcher, Helen Saxton. A first course in electrode processes[M]. Royal Society of Chemistry, 2009.

[10] Lu S J(鲁思伽)，Hong J(洪军)，Qi SH L(祁士华), et al. Transform rules between Fe²⁺/Fe³⁺ in the UV/Fenton system[J]. Acta Scientiae Circumstantiae(环境科学学报), 2009, 29(6):1258-1262.

[11] Qin S H, Meng J, Tang X H, et al. Monitoring the inorganic chemical reaction by surface-enhanced Raman spectroscopy: A case of Fe³⁺ to Fe²⁺ conversion[J]. Talanta, 2016, 146:452-456.

[12] Jean Horkans. On the role of buffers and anions in nichel-iron electrodeposition[J]. J. Electrochem. Soc., 1979，126（11）:1861-1867.

[13] Bard A J, Faulkner L R.. Electrochemical Methods-Fundamentals and Applications[M]. New York: John Wiley&Sons,INC, 1980. 237.

[14] Z.-W. Tian（田昭武）. Electrochemical Research Methods(电化学研究方法) [M]. Beijin：Science Press (科学出版社)，1984,3:4-7.

[15] Allen J. Bard, Larry R. Faulkner. Electrochemical Methods Fundamentals and Applications[M]. New York: John Wiley&Sons,INC, 1980. 51-53.

酸性溶液中Fe²⁺ /Fe³⁺相互转换对电极还原行为的影响

Effect of Fe²⁺/Fe³⁺Interconvertion on Reduction Behavior of Fe³⁺in Acidic Electrolytes

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics

[1]	王昊, 曹晓舟, 薛向欣. 锑在氯化胆碱-乙二醇低共熔溶剂中的电沉积研究[J]. 电化学（中英文）, 2022, 28(4): 2103071-.
[2]	蔡雪凡, 孙升. 多孔电极电池的循环伏安法模拟[J]. 电化学（中英文）, 2021, 27(6): 646-657.
[3]	邢逸飞, 李娜, 温晓芳, 韩宏彦, 崔敏, 张聪, 任聚杰, 籍雪平. 基于取代型多酸复合材料的多巴胺电化学检测[J]. 电化学（中英文）, 2020, 26(6): 890-899.
[4]	韩平, 冯海涛, 董亚萍, 田森, 张波, 李武. 氢氧化钠水溶液体系中金属铬的电化学氧化过程[J]. 电化学（中英文）, 2020, 26(3): 413-421.
[5]	郭佳瑶, 陈煅, 张杰, 詹东平. 法拉第吸脱附偶联过程循环伏安行为的有限元分析[J]. 电化学（中英文）, 2020, 26(2): 281-288.
[6]	李明雪, 史杭, 刘佳, 张檬, 周剑章, 吴德印, 田中群. 金电极上偶氮腺嘌呤的电化学行为研究[J]. 电化学（中英文）, 2019, 25(6): 651-659.
[7]	凌云, 汤儆, 刘国坤, 宗铖. 暂态电化学表面增强拉曼光谱研究对硝基苯硫酚分子的电化学还原过程[J]. 电化学（中英文）, 2019, 25(6): 731-739.
[8]	M. Rostom Ali, S Sankar Saha, Md Ziaur Rahman. 共晶基离子液体的钴电化学沉积[J]. 电化学（中英文）, 2018, 24(5): 546-554.
[9]	董鹏飞，李娜，赵海燕，崔敏，张聪，任聚杰，藉雪平. Keggin 型磷钨酸盐修饰碳糊电极传感多巴胺的研究[J]. 电化学（中英文）, 2018, 24(5): 555-562.
[10]	黄帅帅，刘诚，金磊，杨防祖，田中群，周绍民. 玻碳电极表面复合配位银电结晶机理研究[J]. 电化学（中英文）, 2018, 24(4): 344-350.
[11]	M. Rostom Ali, R. K. Biswas, Md. Golam Zakaria. 海沙钛铁矿在硫酸溶液中的电化学溶解研究[J]. 电化学（中英文）, 2017, 23(4): 420-428.
[12]	黄先杰，闫慧，黄帅帅，杨防祖，田中群，周绍民. 玻碳电极表面因瓦合金的电化学成核机理[J]. 电化学（中英文）, 2017, 23(1): 7-12.
[13]	郑艳洁，姚宏，翁少煌，彭花萍，龚仕文，黄莉，戴强，林新华. 硫酸特布他林在聚铬黑T修饰电极上的电化学行为及其测定[J]. 电化学（中英文）, 2016, 22(6): 617-623.
[14]	杨星，陈平*. 对磺酸基苯偶氮杯[4]芳烃电化学行为研究[J]. 电化学（中英文）, 2016, 22(1): 37-42.
[15]	王福庆，魏奕民，苏育专，毛秉伟，吴凯，赵丰刚，陈春雷，李行璐，种晋. LiFePO₄单颗粒电化学本征性能的快速精确评测[J]. 电化学（中英文）, 2015, 21(6): 566-571.