Suppression of silver ion reduction by Al(NO3)3 complex and its application to highly stabilized olefin transport membranes

Sang Wook Kang; Jong Hak Kim; Jongok Won; Yong Soo Kang

doi:10.1016/j.memsci.2013.06.010

Suppression of silver ion reduction by Al(NO₃)₃ complex and its application to highly stabilized olefin transport membranes

Sang Wook Kang, Jong Hak Kim, Jongok Won, Yong Soo Kang

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

It is well known that the reduction of AgBF₄ to silver nanoparticles inevitably occurs over time even under dark conditions. In particular, the reduction rate of AgBF₄ in a polymer/silver salt complex is much faster than for any other silver salt. However, when Al(NO₃)₃ was incorporated into a POZ/AgBF₄ complex, the reduction of silver ion was suppressed for more than 14 days. Stable silver ions were confirmed by the separation performance of propylene/propane mixtures over time and by the color change of the POZ/AgBF₄/Al(NO₃)₃ complex. FT-IR and FT-Raman spectroscopy showed that ionic aggregation between the silver ion of AgBF₄ and NO₃^- of Al(NO₃)₃ occurred, which was much stronger in intensity than interactions in the POZ/Al(NO₃)₃ and POZ/AgNO₃ complexes. This strong aggregation behavior was attributable to a favorable interaction between F^- of AgBF₄ and Al³⁺ of Al(NO₃)₃, resulting in a weakened interaction between Al³⁺ and its counteranions, which was confirmed by XPS.

Original language	English
Pages (from-to)	156-159
Number of pages	4
Journal	Journal of Membrane Science
Volume	445
DOIs	https://doi.org/10.1016/j.memsci.2013.06.010
Publication status	Published - 2013 Oct 15

Bibliographical note

Funding Information:
This research was supported by a 2013 Research Grant from Sangmyung University . This work was also supported by an Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) Grant funded by the Korean government Ministry of Knowledge Economy ( 20122010100040 ). This work was also supported by the Basic Science Research Program ( 20120003368 and 2013021962 ) and Korea CCS R&D Center through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology . Y. S. Kang also acknowledges the Basic Science Research Program through the National Research Foundation of Korea (NRF) grant funded by the Ministry of Education, Science and Technology (MEST) of Korea for the Center for Next Generation Dye-sensitized Solar Cells (No. 2011-0001055).

All Science Journal Classification (ASJC) codes

Biochemistry
Materials Science(all)
Physical and Theoretical Chemistry
Filtration and Separation

Access to Document

10.1016/j.memsci.2013.06.010

Cite this

@article{1352928997ab48dca86e81e17d96a83f,

title = "Suppression of silver ion reduction by Al(NO3)3 complex and its application to highly stabilized olefin transport membranes",

abstract = "It is well known that the reduction of AgBF4 to silver nanoparticles inevitably occurs over time even under dark conditions. In particular, the reduction rate of AgBF4 in a polymer/silver salt complex is much faster than for any other silver salt. However, when Al(NO3)3 was incorporated into a POZ/AgBF4 complex, the reduction of silver ion was suppressed for more than 14 days. Stable silver ions were confirmed by the separation performance of propylene/propane mixtures over time and by the color change of the POZ/AgBF4/Al(NO3)3 complex. FT-IR and FT-Raman spectroscopy showed that ionic aggregation between the silver ion of AgBF4 and NO3- of Al(NO3)3 occurred, which was much stronger in intensity than interactions in the POZ/Al(NO3)3 and POZ/AgNO3 complexes. This strong aggregation behavior was attributable to a favorable interaction between F- of AgBF4 and Al3+ of Al(NO3)3, resulting in a weakened interaction between Al3+ and its counteranions, which was confirmed by XPS.",

author = "Kang, {Sang Wook} and Kim, {Jong Hak} and Jongok Won and Kang, {Yong Soo}",

note = "Funding Information: This research was supported by a 2013 Research Grant from Sangmyung University . This work was also supported by an Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) Grant funded by the Korean government Ministry of Knowledge Economy ( 20122010100040 ). This work was also supported by the Basic Science Research Program ( 20120003368 and 2013021962 ) and Korea CCS R&D Center through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology . Y. S. Kang also acknowledges the Basic Science Research Program through the National Research Foundation of Korea (NRF) grant funded by the Ministry of Education, Science and Technology (MEST) of Korea for the Center for Next Generation Dye-sensitized Solar Cells (No. 2011-0001055).",

year = "2013",

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T1 - Suppression of silver ion reduction by Al(NO3)3 complex and its application to highly stabilized olefin transport membranes

AU - Kang, Sang Wook

AU - Kim, Jong Hak

AU - Won, Jongok

AU - Kang, Yong Soo

N1 - Funding Information: This research was supported by a 2013 Research Grant from Sangmyung University . This work was also supported by an Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) Grant funded by the Korean government Ministry of Knowledge Economy ( 20122010100040 ). This work was also supported by the Basic Science Research Program ( 20120003368 and 2013021962 ) and Korea CCS R&D Center through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology . Y. S. Kang also acknowledges the Basic Science Research Program through the National Research Foundation of Korea (NRF) grant funded by the Ministry of Education, Science and Technology (MEST) of Korea for the Center for Next Generation Dye-sensitized Solar Cells (No. 2011-0001055).

PY - 2013/10/15

Y1 - 2013/10/15

N2 - It is well known that the reduction of AgBF4 to silver nanoparticles inevitably occurs over time even under dark conditions. In particular, the reduction rate of AgBF4 in a polymer/silver salt complex is much faster than for any other silver salt. However, when Al(NO3)3 was incorporated into a POZ/AgBF4 complex, the reduction of silver ion was suppressed for more than 14 days. Stable silver ions were confirmed by the separation performance of propylene/propane mixtures over time and by the color change of the POZ/AgBF4/Al(NO3)3 complex. FT-IR and FT-Raman spectroscopy showed that ionic aggregation between the silver ion of AgBF4 and NO3- of Al(NO3)3 occurred, which was much stronger in intensity than interactions in the POZ/Al(NO3)3 and POZ/AgNO3 complexes. This strong aggregation behavior was attributable to a favorable interaction between F- of AgBF4 and Al3+ of Al(NO3)3, resulting in a weakened interaction between Al3+ and its counteranions, which was confirmed by XPS.

AB - It is well known that the reduction of AgBF4 to silver nanoparticles inevitably occurs over time even under dark conditions. In particular, the reduction rate of AgBF4 in a polymer/silver salt complex is much faster than for any other silver salt. However, when Al(NO3)3 was incorporated into a POZ/AgBF4 complex, the reduction of silver ion was suppressed for more than 14 days. Stable silver ions were confirmed by the separation performance of propylene/propane mixtures over time and by the color change of the POZ/AgBF4/Al(NO3)3 complex. FT-IR and FT-Raman spectroscopy showed that ionic aggregation between the silver ion of AgBF4 and NO3- of Al(NO3)3 occurred, which was much stronger in intensity than interactions in the POZ/Al(NO3)3 and POZ/AgNO3 complexes. This strong aggregation behavior was attributable to a favorable interaction between F- of AgBF4 and Al3+ of Al(NO3)3, resulting in a weakened interaction between Al3+ and its counteranions, which was confirmed by XPS.

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