Asset Details
Do you wish to reserve the book?
Potential‐Mediated Recycling of Copper From Brackish Water by an Electrochemical Copper Pump
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Potential‐Mediated Recycling of Copper From Brackish Water by an Electrochemical Copper Pump
Do you wish to request the book?
Potential‐Mediated Recycling of Copper From Brackish Water by an Electrochemical Copper Pump
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Potential‐Mediated Recycling of Copper From Brackish Water by an Electrochemical Copper Pump
2022
Overview
Copper ions (Cu2+) disposed to the environment at massive scale pose severe threat to human health and waste of resource. Electrochemical deionization (EDI) which captures ions by electrical field is a promising technique for water purification. However, the removal capacity and selectivity toward Cu2+ are unsatisfying, yet the recycling of the captured copper in EDI systems is yet to be explored. Herein, an efficient electrochemical copper pump (ECP) that can deliver Cu2+ from dilute brackish water into much more concentrated solutions is constructed using carbon nanosheets for the first time, which works based on reversible electrosorption and electrodeposition. The trade‐off between the removal capacity and reversibility is mediated by the operation voltage. The ECP exhibits a removal capacity of 702.5 mg g−1 toward Cu2+ and a high selectivity coefficient of 64 for Cu2+/Na+ in the presence of multiple cations; both are the highest reported to date. The energy consumption of 1.79 Wh g–1 is among the lowest for EDI of copper. More importantly, the Cu species captured can be released into a 20‐fold higher concentrated solution. Such a high performance is attributed to the optimal potential distribution between the two electrodes that allows reversible electrodeposition and efficient electrosorption. A novel electrochemical copper pump that can deliver Cu2+ from brackish water into a 20‐fold higher concentrated solution is constructed using hierarchical porous carbon nanosheets. The pump exhibits the highest removal capacity and selectivity toward Cu2+ so far and can release the captured Cu species efficiently; all are enabled by reversible electrosorption and electrodeposition at high operation voltages.
