东北大学学报(自然科学版) ›› 2025, Vol. 46 ›› Issue (2): 50-56.DOI: 10.12068/j.issn.1005-3026.2025.20230283

• 材料与冶金 • 上一篇    下一篇

低共熔溶剂电解固态Sb2S3/CNTs制备Sb/CNTs的研究

邓逸凡1,2, 李敏1,2(), 薛伟健1,2, 高炳亮1,2   

  1. 1.东北大学 多金属共生矿生态化冶金教育部重点实验室,辽宁 沈阳 110819
    2.东北大学 冶金学院,辽宁 沈阳 110819
  • 收稿日期:2023-08-23 出版日期:2025-02-15 发布日期:2025-05-20
  • 通讯作者: 李敏
  • 作者简介:邓逸凡(1998—),男,江西宜春人,东北大学硕士研究生
    高炳亮(1974—),男,新疆阜康人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51904068);中央高校基本科研业务费专项资金资助项目(N2325023);辽宁省自然科学基金资助项目(2023-MSBA-091)

Study on Electrolysis of Solid Sb2S3/CNTs to Prepare Sb/CNTs Using Deep Eutectic Solvent

Yi-fan DENG1,2, Min LI1,2(), Wei-jian XUE1,2, Bing-liang GAO1,2   

  1. 1.Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education),Northeastern University,Shenyang 110819,China
    2.School of Metallurgy,Northeastern University,Shenyang 110819,China.
  • Received:2023-08-23 Online:2025-02-15 Published:2025-05-20
  • Contact: Min LI

摘要:

以固态Sb2S3/碳纳米管(carbon nanotubes,CNTs)为阴极,石墨为阳极,在氯化胆碱-乙二醇低共熔溶剂中直接电解制备Sb/CNTs.采用循环伏安法研究了固态Sb2S3的电化学还原行为,并系统研究了电解电压、电解时间及温度对固态Sb2S3电脱硫的影响.循环伏安法结果表明,低共熔溶剂中固态Sb2S3可被直接电化学还原为金属Sb且固态Sb2S3被电化学还原为金属Sb的反应是一步还原过程.XRD,EDS结果表明,电解电压越大,电解时间越长,固态Sb2S3的电脱硫越彻底.353 K温度下2.4 V电压电解6 h后固态Sb2S3/CNTs可被完全电化学还原为Sb/CNTs.SEM结果表明,电解电压越大,电解产物颗粒越小,表面孔隙越大.所得结果可为低温甚至室温直接电化学还原固态硫化物制备金属提供一种新路径.

关键词: 低共熔溶剂(DES), 硫化锑, 锑, 电化学还原

Abstract:

Sb/CNTs(carbon nanotubes) nanotubes were prepared by electrolysis in choline chloride-ethylene glycol eutectic solvent using solid Sb2S3/CNTs as cathode and graphite as anode. The electrochemical reduction behavior of solid Sb2S3 was studied by cyclic voltammetry and the effects of electrolysis voltage, electrolysis time and temperature on the electro-desulfurization of solid-state Sb2S3 were systematically investigated. The cyclic voltammetry results show that solid-state Sb2S3 can be directly electrochemically reduced metallic Sb in the deep eutectic solvent, and the electrochemical reduction of solid-state Sb2S3 to metallic Sb is a one-step reduction process. The XRD and EDS results indicate that increasing the electrolysis voltage and extending the electrolysis time lead to more comprehensive electro-desulfurization of solid-state Sb2S3. After electrolysis at a voltage of 2.4 V for 6 h at 353 K, solid-state Sb2S3/CNTs can be completely electrochemically reduced to Sb/CNTs. SEM results indicate that as the electrolysis voltage increases, the particles of the electrolysis product become smaller and the surface porosity increases. The findings provide a novel pathway for the direct electrochemical reduction of solid sulfides to metals at low temperatures and even at room temperature.

Key words: deep eutectic solvent(DES), antimony sulfide, antimony, electrochemical reduction

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