2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 9: Molten Salts and Ionic Liquids, Energy Production
| Editors: | Kongoli F, Gaune-Escard M, Turna T, Mauntz M, Dodds H.L. |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2016 |
| Pages: | 390 pages |
| ISBN: | 978-1-987820-24-9 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Electrodeposition of titanium from an ionic liquid
Chao Qi1; Qian Wang2; Yanhong Kang3; Xingmei Lu2;1A: COLLEGE OF CHEMISTRY AND CHEMICAL ENGIMEERING, SHENYANG NORMAL UNIVERSITY B: INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCES, Beijing, China; 2INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCES, Beijing, China; 3COLLEGE OF CHEMISTRY AND CHEMICAL ENGIMEERING, SHENYANG NORMAL UNIVERSITY, Shenyang, China;
Type of Paper: Regular
Id Paper: 64
Topic: 13
Abstract:
Titanium (Ti) is attractive for using as protective coatings due to its excellent corrosion resistance. Ionic liquids (ILs) have been used to electrodeposit Ti for a long time, but only trace Ti has been obtained until now. Here Ti was electrodeposited in the 1-isobutyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide ([BisoMPyrr]NTf2) IL containing 0.2M TiCl4 onto the Ag substrate. X-ray Diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) were utilized for characterization of the electrodeposits. It was found that only TiCl3 and TiO2 were detected. Electrochemical behavior of Ti(IV)was studied by cyclic voltammetry (CV), showing the reduction of Ti(IV) in [BisoMPyrr]NTf2 was a little complex. To understand the reduction process, ultraviolet-visible (UV-Vis) spectroscopy was used for identification of the Ti species in the electrolyte, and only Ti(IV) was detected before the electrolyte was used. However, there is no Ti(IV) any longer in the solution after electrodeposition and the absorption peak of other Ti species is not obtained. From the above analysis, it could be seen that it was very difficult to directly reduce Ti(IV) completely to the metal in this IL and the detected TiO2 should be from the oxidation of trace Ti deposit.
Acknowledgment: The authors gratefully acknowledge the financial support from the National Basic Research Program of China (2013CB632606), General Program Youth of National Natural Science Foundation of China (51404230), and Director Fund Product of Research Center for Eco-Environmental science of Shenyang Normal University (EERC-P-201503)
Keywords:
Electrochemical; Electrodeposition; Metals;References:
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