Polyselenides on the route to electrodeposited selenium
The electrochemical oxidation of aqueous solutions of hydrogen selenide (HSe − ) and of hydrogen polyselenide ions (HSe x− ) on glassy carbon electrodes at pH = 9.2 is reported. In both cases, the oxidation leads to deposits of selenium. The role of polyselenides as intermediates in the process is d...
| Main Authors: | , , , |
|---|---|
| 格式: | Journal article |
| 出版: |
Elsevier
2019
|
| 總結: | The electrochemical oxidation of aqueous solutions of hydrogen selenide (HSe − ) and of hydrogen polyselenide ions (HSe x− ) on glassy carbon electrodes at pH = 9.2 is reported. In both cases, the oxidation leads to deposits of selenium. The role of polyselenides as intermediates in the process is demonstrated. At 25 °C amorphous selenium is formed whereas at 70 °C crystalline selenium is deposited. The possible use of selenium films for technological purposes is discussed. |
|---|