喻溪亭,缑晓丹,张延宗.超亲水-水下超疏油镍镀层材料制备及其油水分离性能研究[J].表面技术,2021,50(6):177-183.
YU Xi-ting,GOU Xiao-dan,ZHANG Yan-zong.Preparation of Superhydrophilic and Underwater Superoleophobic Nickel-coating Material and Oil-Water Separation Performance[J].Surface Technology,2021,50(6):177-183 |
| 超亲水-水下超疏油镍镀层材料制备及其油水分离性能研究 |
| Preparation of Superhydrophilic and Underwater Superoleophobic Nickel-coating Material and Oil-Water Separation Performance |
| 投稿时间：2020-05-29 修订日期：2020-09-21 |
| DOI：10.16490/j.cnki.issn.1001-3660.2021.06.018 |
| 中文关键词: 一步制备 电沉积法 镍镀层 微纳米结构 超亲水 水下超疏油 |
| 英文关键词:one-step preparation electrodeposition method nickel coating micronanostructure superhydrophilic underwater superoleophobic |
| 基金项目:四川省科学技术厅资助项目(2018JY0457，2019YFS0502，2021YFG0275) |
|
|
|
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 目的 为进一步解决油水分离材料目前存在的制备成本高、制备流程复杂和药品种类繁多的问题。方法 提出一种以不锈钢网为基底，运用一步电化学沉积法制备超亲水-水下超疏油材料的方法。在电沉积的过程中，阴极表面发生还原反应生成金属Ni，通过调整制备过程中的时间、电流、温度，进一步优化参数，使阴极材料表面形成一种钟乳石状的微纳米粗糙结构。利用接触角测试仪测定其接触角，同时采用扫描电子显微镜(SEM)、X射线能谱仪(EDS)和X射线衍射仪(XRD)对其进行表征分析。结果 制备超亲水-水下超疏油材料的最优条件为:电流0.6 A，电沉积时间23 min，温度50 ℃。在该条件下制备的阴极镍镀层材料，其表面在水下的油接触角(OCA)达到152°±3°，在空气中的水接触角(WCA)达到0°，表现出超亲水-水下超疏油性能。在油水分离实验中，阴极镍镀层材料对正己烷的分离效率最高，达到了99.3%，并在20次油水分离循环实验过程中保持了相对稳定的分离效率，同时表现出高效耐用的油水分离性能。结论 通过一步电化学沉积法制备出的阴极镍镀层材料具备超亲水-水下超疏油性能，且高效耐用，油水分离效率稳定，同时具备制备成本较低、制备流程简单和药品使用种类少的优点。 |
| 英文摘要: |
| In order to solve the problems of high cost, complicated preparation process and various kinds of reagent of oil-water separation materials, a new method is proposed to prepare superhydrophilic and underwater superoleophobic materials by one-step electrodeposition based on stainless steel mesh. In the process of electrodeposition, the surface of cathodic stainless steel mesh occurred reduction reaction and generated metal Ni. The parameters were further optimized by adjusting the time, current and temperature of preparation process and a rough stalactite-shaped micro/nano structure was formed on the cathodic surface. Contact angle measurement was used to determine contact angle. Scanning electron microscopy (SEM), energy- dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) were employed to investigate the morphology and chemical composition. The results showed that the condition is optimal when the current is 0.6 A, the time is 23 min, and the temperature is 50 ℃. Under these conditions, the oil contact angle (OCA) and the water contact angle (WCA) of the cathodic surface respectively reach 152°±3° and 0° and the material possesses superhydrophilic and underwater superoleophobic performance. During the oil-water separation experiment, the cathodic separation efficiency of n-hexane/water is the highest, which can reach 99.3% and maintain relatively stable during a test involving 20 cycles. Thus, the mesh exhibits high separation efficiency and good reusability in oil-water separation. The superhydrophilic and underwater superoleophobic nickel-coating prepared by the one-step electrochemical deposition method are efficient, durable with stable oil-water separation efficiency, having advantage of low cost, simple preparation process and few types of chemicals. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
渝公网安备 50010702501715号