Inherent electrochemistry of layered post-transition metal halides : the unexpected effect of potential cycling of PbI2
The development of two-dimensional nanomaterials has expedited the growth of advanced technological applications. PbI2 is a layered inorganic solid with important and unique properties suitable for applications in the detection of electromagnetic radiation. While the optical and electrical propertie...
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2015
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/106700 http://hdl.handle.net/10220/25037 http://dx.doi.org/10.1002/chem.201405204 |
| _version_ | 1826129099696898048 |
|---|---|
| author | Chua, Chun Kiang Sofer, Zdeněk Lim, Chee Shan Pumera, Martin |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Chua, Chun Kiang Sofer, Zdeněk Lim, Chee Shan Pumera, Martin |
| author_sort | Chua, Chun Kiang |
| collection | NTU |
| description | The development of two-dimensional nanomaterials has expedited the growth of advanced technological applications. PbI2 is a layered inorganic solid with important and unique properties suitable for applications in the detection of electromagnetic radiation. While the optical and electrical properties of layered PbI2 have been generally established, its electrochemistry has remained largely unexplored. In this work, we examine the inherent electrochemistry of PbI2 in relation to its morphological and structural properties. A direct comparison between commercially available and solution-grown PbI2 showed high similarity in properties based on characterizations by X-ray photoelectron spectroscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The respective layered PbI2 materials also exhibited similar inherent electrochemistry. Electrochemical potential cycling of PbI2 in phosphate buffer resulted in the dissolution of iodide ions from PbI2 to form complex lead-phosphate-chloride with the oxygen groups of the phosphate ions while retaining the hexagonal structure. In the case of KCl solution, the formation of PbO2 was observed. |
| first_indexed | 2024-10-01T07:35:10Z |
| format | Journal Article |
| id | ntu-10356/106700 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:35:10Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | ntu-10356/1067002019-12-06T22:16:28Z Inherent electrochemistry of layered post-transition metal halides : the unexpected effect of potential cycling of PbI2 Chua, Chun Kiang Sofer, Zdeněk Lim, Chee Shan Pumera, Martin School of Physical and Mathematical Sciences DRNTU::Science::Physics The development of two-dimensional nanomaterials has expedited the growth of advanced technological applications. PbI2 is a layered inorganic solid with important and unique properties suitable for applications in the detection of electromagnetic radiation. While the optical and electrical properties of layered PbI2 have been generally established, its electrochemistry has remained largely unexplored. In this work, we examine the inherent electrochemistry of PbI2 in relation to its morphological and structural properties. A direct comparison between commercially available and solution-grown PbI2 showed high similarity in properties based on characterizations by X-ray photoelectron spectroscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The respective layered PbI2 materials also exhibited similar inherent electrochemistry. Electrochemical potential cycling of PbI2 in phosphate buffer resulted in the dissolution of iodide ions from PbI2 to form complex lead-phosphate-chloride with the oxygen groups of the phosphate ions while retaining the hexagonal structure. In the case of KCl solution, the formation of PbO2 was observed. 2015-02-12T06:16:50Z 2019-12-06T22:16:28Z 2015-02-12T06:16:50Z 2019-12-06T22:16:28Z 2015 2015 Journal Article Chua, C. K., Sofer, Z., Lim, C. S., & Pumera, M. (2015). Inherent electrochemistry of layered post-transition metal halides : the unexpected effect of potential cycling of PbI2. Chemistry - A European journal, 21(7), 3073-3078. 0947-6539 https://hdl.handle.net/10356/106700 http://hdl.handle.net/10220/25037 http://dx.doi.org/10.1002/chem.201405204 en Chemistry - a European journal © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| spellingShingle | DRNTU::Science::Physics Chua, Chun Kiang Sofer, Zdeněk Lim, Chee Shan Pumera, Martin Inherent electrochemistry of layered post-transition metal halides : the unexpected effect of potential cycling of PbI2 |
| title | Inherent electrochemistry of layered post-transition metal halides : the unexpected effect of potential cycling of PbI2 |
| title_full | Inherent electrochemistry of layered post-transition metal halides : the unexpected effect of potential cycling of PbI2 |
| title_fullStr | Inherent electrochemistry of layered post-transition metal halides : the unexpected effect of potential cycling of PbI2 |
| title_full_unstemmed | Inherent electrochemistry of layered post-transition metal halides : the unexpected effect of potential cycling of PbI2 |
| title_short | Inherent electrochemistry of layered post-transition metal halides : the unexpected effect of potential cycling of PbI2 |
| title_sort | inherent electrochemistry of layered post transition metal halides the unexpected effect of potential cycling of pbi2 |
| topic | DRNTU::Science::Physics |
| url | https://hdl.handle.net/10356/106700 http://hdl.handle.net/10220/25037 http://dx.doi.org/10.1002/chem.201405204 |
| work_keys_str_mv | AT chuachunkiang inherentelectrochemistryoflayeredposttransitionmetalhalidestheunexpectedeffectofpotentialcyclingofpbi2 AT soferzdenek inherentelectrochemistryoflayeredposttransitionmetalhalidestheunexpectedeffectofpotentialcyclingofpbi2 AT limcheeshan inherentelectrochemistryoflayeredposttransitionmetalhalidestheunexpectedeffectofpotentialcyclingofpbi2 AT pumeramartin inherentelectrochemistryoflayeredposttransitionmetalhalidestheunexpectedeffectofpotentialcyclingofpbi2 |