The Library
Electrooxidation of ammonia on A-site deficient perovskite oxide La0.9Ni0.6Cu0.35Fe0.05O3-δ for wastewater treatment
Tools
Tools
Tools
Jeerh, Georgina, Zou, Peimiao, Zhang, Mengfei, Chen, Shigang, Humphreys, John and Tao, Shanwen (2022) Electrooxidation of ammonia on A-site deficient perovskite oxide La0.9Ni0.6Cu0.35Fe0.05O3-δ for wastewater treatment. Separation and Purification Technology, 297 . 121451. doi:10.1016/j.seppur.2022.121451 ISSN 1383-5866. [ 🗎 Public]. [ (🔓): Yes ].
|
PDF
WRAP-electrooxidation-ammonia-A-site-deficient-perovskite-oxide-La0.9Ni0.6Cu0.35Fe0.05O3-δ-wastewater-treatment-Tao-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (6Mb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.seppur.2022.121451
Abstract
Wastewater can contain high amounts of ammonia which can pose as a great safety threat if released into natural waters. The electrochemical oxidation of ammonia offers a viable strategy to remove high concentrations and provides an attractive method for wastewater treatment. However, finding a highly efficient and low-cost catalyst is imperative for overcoming the sluggish nature of ammonia oxidation reaction. Herein, a modified A- and B-site perovskite is proposed as a catalyst for the oxidation of ammonia, making it suitable as an anode in an ammonia electrolyser. A series of La1-yNi0.6Cu0.4-xFexO3-δ (x = 0, 0.05 and 0.10; y = 0, 0.05 and 0.10) perovskite materials were synthesised by a conventional sol–gel method. Amongst those tested oxides, La0.9Ni0.6Cu0.35Fe0.05O3-δ was found to have superior activity towards the electrooxidation of ammonia due to an optimised amount of Fe doping and the presence of oxygen vacancies introduced by an A-site deficiency. Subsequently, La0.9Ni0.6Cu0.35Fe0.05O3-δ was employed as an anode in an ammonia electrolyser where the ammonia removal efficiency reached 95.4 % in simulated wastewater after 80 hr and a substantial reduction in real wastewater was also observed. These results demonstrate that the A-site deficient perovskite materials are a viable electrode for the removal of ammonia in a practical energy setting and paves way for future applications.
| Item Type: | Journal Article | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QE Geology T Technology > TD Environmental technology. Sanitary engineering |
||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||||
| Library of Congress Subject Headings (LCSH): | Perovskite (Mineral), Water -- Purification -- Oxidation, Sewage -- Purification -- Nitrogen removal, Sewage -- Purification -- Oxidation, Ammonia -- Oxidation | ||||||||||||
| Journal or Publication Title: | Separation and Purification Technology | ||||||||||||
| Publisher: | Elsevier Ltd | ||||||||||||
| ISSN: | 1383-5866 | ||||||||||||
| Official Date: | 15 September 2022 | ||||||||||||
| Dates: |
|
||||||||||||
| Volume: | 297 | ||||||||||||
| Article Number: | 121451 | ||||||||||||
| DOI: | 10.1016/j.seppur.2022.121451 | ||||||||||||
| Status: | Peer Reviewed | ||||||||||||
| Publication Status: | Published | ||||||||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||
| Date of first compliant deposit: | 13 September 2022 | ||||||||||||
| Date of first compliant Open Access: | 14 September 2022 | ||||||||||||
| RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
Downloads
Downloads per month over past year
