Citation: LIU Yu-Sheng, FU Hai-Ying, TANG Zhong-Feng, HUANG Wei, WU Guo-Zhong. Melting Point and Structure of Ionic Liquid [EMIM][PF₆] on the Surface of Nano-SiO_x Particles[J]. Acta Physico-Chimica Sinica, ;2011, 27(07): 1725-1729. doi: 10.3866/PKU.WHXB20110731 shu

Melting Point and Structure of Ionic Liquid [EMIM][PF₆] on the Surface of Nano-SiO_x Particles

1.
1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 210800, P. R. China;
2. Xuzhou Institute of Technology, Xuzhou 221000, Jiangsu Province, P. R. China

Received Date: 14 March 2011
Available Online: 3 June 2011
Fund Project: 国家自然科学基金(11079007, 20973192)资助项目 (11079007, 20973192)

The 1-ethyl-3-methyl imidazolium hexafluorophosphate ionic liquid ([EMIM][PF₆]) was absorbed onto the surfaces of several kinds of nano-SiO_x particles by mechanical grinding using an agate mortar. The samples were investigated by differential scanning calorimetry (DSC), Raman spectroscopy, Fourier transform infrared (FTIR) spectroscopy, and X-ray diffraction (XRD). We found that the melting point of the [EMIM][PF₆] adsorbed on the surface of nano-SiO_x was significantly less than that of the bulk ionic liquid. For the pure ionic liquid [EMIM][PF₆], the melting point was 62 ℃. After absorption onto SiO_x nanoparticles the melting point decreased to 52 ℃ and ΔT was -10 ℃. For the other two types of nano-SiO_x particles the ΔT was -20 and -17 ℃, respectively. These results indicate that the melting point depression was dependent on the surface properties of the nano-SiO_x particles. Furthermore, the characteristics of the surface-adsorbed ionic liquid were also found to be quite different from that of the bulk ionic liquid by Raman and XRD analyses. The difference in the density of the surface hydroxyl groups and the specific surface area of the nano-SiO_x particles may induce different interfacial interactions between [EMIM][PF₆] and the nano-SiO_x particles. Our results suggest that the density of the surface hydroxyl groups and specific surface area are the major factors responsible for the behavior of the adsorbed ionic liquid [EMIM][PF₆].
- Nano-SiO_x,
- Ionic liquid,
- Melting point,
- Phase transition
1. [1]
  
  (1) Rogers, R. D.; Seddon, K. R. Science 2003, 302, 792.
2. [2]
  (2) Lee, S. G. Chem. Commun. 2006, No. 10, 1049.
3. [3]
  (3) Bellayer, S.; Viau, L.; Tebby, Z.; Toupance, T.; Le Bideau, J.; Vioux, A. Dalton Trans. 2009, 8, 1307.
4. [4]
  (4) rdon, C. M. Appl. Catal. A 2001, 222, 101.
5. [5]
  (5) Welton, T. Chem. Rev. 1999, 99, 2071.
6. [6]
  (6) Zhou, A. B.; Matsumoto, H.; Tatsumi, K. ChemPhysChem 2005, 6, 1324.
7. [7]
  (7) Kubo, K.; Shirai, M.; Yokoyama, C. Tetrahedron Lett. 2002, 43, 7115.
8. [8]
  (8) Valkenberg, M. H.; Decastro, C.; Holderich,W. F. Green Chem. 2002, 4, 88.
9. [9]
  (9) Shi, F.; Zhang, Q. H.; Deng, Y. Q. Chem. Eur. J. 2005, 11, 5279.
10. [10]
  (10) Néouze, M.; Litschauer, M. J. Phys. Chem. B 2008, 112, 16721.
11. [11]
  (11) Chen, S. M.;Wu, G. Z.; Sha, M. L.; Huang, S. R. J. Am. Chem. Soc. 2007, 129, 2416.
12. [12]
  (12) Nainaparampil, J. J.; Phillips, B. S.; Eapen, K. C.; Zabinski, J. S. Nanotechnol. 2005, 16, 2474.
13. [13]
  (13) Rittigstein, P.; Torkelson, J. M. J. Polym. Sci. Pt. B-Polym. Phys. 2006, 44, 2935.
14. [14]
  (14) Shi, F.; Deng, Y. Q. Spectrochimica Acta A 2005, 62, 239.
15. [15]
  (15) Fukushima, T.; Aida, T. Chem. Eur. J. 2007, 13, 5048.
16. [16]
  (16) ebel, R.; Hesemann, P.;Weber, J.; Oller, E. M.; Friedrich, A.; Beuermann, S.; Taubert, A. Phys. Chem. Chem. Phys. 2009, 11, 3653.
17. [17]
  (17) Neouze, M. A.; Bideau, J. L.; Gaveau, P. S.; Bellayer, S.; Vioux, A. Chem. Mater. 2006, 18, 3931.
18. [18]
  (18) Wang,Y.; Chen, M.; Zhou, F. Nature 2002, 391, 912.
19. [19]
  (19) Lehmann, B.; Friedrich, K. J. Mater. Sci. Lett. 2003, 22, 1027.
20. [20]
  (20) Liu, Y. S.;Wu, G. Z.; Fu, H. Y.; Tang, Z. F.; Chen, S. M.; Sha, M. L. Dalton Trans. 2010, 39, 3190.
21. [21]
  (21) Guegan, R.; Morineau, D.; Alba-Simionesco, C. Chem. Phys. 2005, 317, 236.
22. [22]
  (22) Talaty, E. R.; Raja, S.; Storhaug, V. J.; Dolle, A.; Robert Carper, W. J. Phys. Chem. B 2004, 108, 13177.
23. [23]
  (23) Vishweshwar, P.; Nangia, A.; Lynch, V. M. Crystal Growth & Design 2003, 3, 783.
24. [24]
  (24) Huang,W.; Qian, H. J. Mol. Struct. 2007, 832, 108.
1. [1]
  Yameen Ahmed , Xiangxiang Feng , Yuanji Gao , Yang Ding , Caoyu Long , Mustafa Haider , Hengyue Li , Zhuan Li , Shicheng Huang , Makhsud I. Saidaminov , Junliang Yang . Interface Modification by Ionic Liquid for Efficient and Stable FAPbI₃ Perovskite Solar Cells. Acta Physico-Chimica Sinica, 2024, 40(6): 2303057-0. doi: 10.3866/PKU.WHXB202303057
2. [2]
  Yajun Hou , Jinxin Liu , Tao Chen , Yi Zhang , Lei Zhou . Sonogashira coupling reaction in ionic liquids: a detailed exploration of experiment 4.4D in the “101 Plan” synthetic chemistry curriculum. University Chemistry, 2026, 41(6): 136-144. doi: 10.12461/PKU.DXHX202510101
3. [3]
  Hua Yu , Dingdu Chen , Xuan Wang , Lijun Yang , Geming Wang , Pu Hu . MOF-encapsulated phosphorus/nitrogen ionic liquid as a multifunctional flame-retardant additive for high-safety lithium-ion batteries. Acta Physico-Chimica Sinica, 2026, 42(7): 100201-0. doi: 10.1016/j.actphy.2025.100201
4. [4]
  Qiang Zhang , Yuanbiao Huang , Rong Cao . Imidazolium-Based Materials for CO₂ Electroreduction. Acta Physico-Chimica Sinica, 2024, 40(4): 2306040-0. doi: 10.3866/PKU.WHXB202306040
5. [5]
  Kaiping Yang , Qiang Zhou , Wei Wei , Wei Shao . Chemistry in Everyday Life: From Hand Warmers to Phase Change Energy Storage Materials. University Chemistry, 2026, 41(2): 307-313. doi: 10.12461/PKU.DXHX202502122
6. [6]
  Lichen Wu , Yihan Yang , Jiang Zhou , Bingan Lu . Transition metal oxide cathode materials for potassium-ion batteries: research progress and design strategies. Acta Physico-Chimica Sinica, 2026, 42(7): 100217-0. doi: 10.1016/j.actphy.2025.100217
7. [7]
  Shan Zhao , Xu Liu , Haotian Guo , Zonglin Liu , Pengfei Wang , Jie Shu , Tingfeng Yi . Synergistic design of high-entropy P2/O3 biphasic cathodes for high-performance sodium-ion batteries. Acta Physico-Chimica Sinica, 2026, 42(1): 100129-0. doi: 10.1016/j.actphy.2025.100129
8. [8]
  Shuhong Xiang , Lv Yang , Yingsheng Xu , Guoxin Cao , Hongjian Zhou . Selective electrosorption of Cs(Ⅰ) from high-salinity radioactive wastewater using CNT-interspersed potassium zinc ferrocyanide electrodes. Acta Physico-Chimica Sinica, 2025, 41(9): 100097-0. doi: 10.1016/j.actphy.2025.100097
9. [9]
  Wenjun Zheng . Application in Inorganic Synthesis of Ionic Liquids. University Chemistry, 2024, 39(8): 163-168. doi: 10.3866/PKU.DXHX202401020
10. [10]
  Qiaorong RU . Synthesis and characterization of tripyridine functionalized polyionic liquid luminescent materials. Chinese Journal of Inorganic Chemistry, 2026, 42(1): 111-119. doi: 10.11862/CJIC.20250121
11. [11]
  Jie Fu , Linghan Bai , Liqiu Chu , Hanyu Zou , Long Qin , Shuxin Jia , Meile Ni , Zhifan Hao , Mengxiao Sun , Fan Wu . Biomimetic "fibrous root systems" in phase-change composites for photothermal conversion and energy storage. Acta Physico-Chimica Sinica, 2026, 42(10): 100333-0. doi: 10.1016/j.actphy.2026.100333
12. [12]
  Limei CHEN , Mengfei ZHAO , Lin CHEN , Ding LI , Wei LI , Weiye HAN , Hongbin WANG . Preparation and performance of paraffin/alkali modified diatomite/expanded graphite composite phase change thermal storage material. Chinese Journal of Inorganic Chemistry, 2024, 40(3): 533-543. doi: 10.11862/CJIC.20230312
13. [13]
  Hong LI , Xiaoying DING , Cihang LIU , Jinghan ZHANG , Yanying RAO . Detection of iron and copper ions based on gold nanorod etching colorimetry. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 953-962. doi: 10.11862/CJIC.20230370
14. [14]
  Qingtang ZHANG , Xiaoyu WU , Zheng WANG , Xiaomei WANG . Performance of nano Li₂FeSiO₄/C cathode material co-doped by potassium and chlorine ions. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1689-1696. doi: 10.11862/CJIC.20240115
15. [15]
  Qi Li , Pingan Li , Zetong Liu , Jiahui Zhang , Hao Zhang , Weilai Yu , Xianluo Hu . Fabricating Micro/Nanostructured Separators and Electrode Materials by Coaxial Electrospinning for Lithium-Ion Batteries: From Fundamentals to Applications. Acta Physico-Chimica Sinica, 2024, 40(10): 2311030-0. doi: 10.3866/PKU.WHXB202311030
16. [16]
  Lin LI , Le CHEN , Lingjie HOU , Jiaqi JING , Jiayu DING , Tao ZHOU , Ruiping ZHANG . Smartphone-assisted fluorescent silver nanoclusters as ratiometric sensor for visual colorimetric detection of sulfide. Chinese Journal of Inorganic Chemistry, 2025, 41(11): 2261-2271. doi: 10.11862/CJIC.20250130
17. [17]
  Mengmeng SUN , Rui JIANG , Tianyi ZHAO , Jimin YANG . Fabrication of carboxyl-modified UiO-67 nanomaterials and their highly efficient removal mechanism of anionic dye. Chinese Journal of Inorganic Chemistry, 2026, 42(3): 499-506. doi: 10.11862/CJIC.20250281
18. [18]
  Yingran Liang , Fei Wang , Jiabao Sun , Hongtao Zheng , Zhenli Zhu . Construction and Application of a New Experimental Device for Determination of Alkaline Metal Elements by Plasma Atomic Emission Spectrometry Based on Solution Cathode Glow Discharge: An Alternative Approach for Fundamental Teaching Experiments in Emission Spectroscopy. University Chemistry, 2024, 39(5): 380-387. doi: 10.3866/PKU.DXHX202312024
19. [19]
  Pengyang FAN , Shan FAN , Qinjin DAI , Xiaoying ZHENG , Wei DONG , Mengxue WANG , Xiaoxiao HUANG , Yong ZHANG . Preparation and performance of rich 1T-MoS₂ nanosheets for high-performance aqueous zinc ion battery cathode materials. Chinese Journal of Inorganic Chemistry, 2025, 41(4): 675-682. doi: 10.11862/CJIC.20240339
20. [20]
  Jun Huang , Pengfei Nie , Yongchao Lu , Jiayang Li , Yiwen Wang , Jianyun Liu . 丝光沸石负载自支撑氮掺杂多孔碳纳米纤维电容器及高效选择性去除硬度离子. Acta Physico-Chimica Sinica, 2025, 41(7): 100066-0. doi: 10.1016/j.actphy.2025.100066

Get Citation

PDF

XML

Metrics

PDF Downloads(1111)
Abstract views(3444)
HTML views(39)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Melting Point and Structure of Ionic Liquid [EMIM][PF6] on the Surface of Nano-SiOx Particles

Metrics

通讯作者: 陈斌, bchen63@163.com

Melting Point and Structure of Ionic Liquid [EMIM][PF₆] on the Surface of Nano-SiO_x Particles