These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Dopant-Induced Electronic States Regulation Boosting Electroreduction of Dilute Nitrate to Ammonium.
    Author: Zhang LH, Jia Y, Zhan J, Liu G, Liu G, Li F, Yu F.
    Journal: Angew Chem Int Ed Engl; 2023 May 22; 62(22):e202303483. PubMed ID: 36988074.
    Abstract:
    Electrochemically converting NO3 - into NH3 offers a promising route for water treatment. Nevertheless, electroreduction of dilute NO3 - is still suffering from low activity and/or selectivity. Herein, B as a modifier was introduced to tune electronic states of Cu and further regulate the performance of electrochemical NO3 - reduction reaction (NO3 RR) with dilute NO3 - concentration (≤100 ppm NO3 - -N). Notably, a linear relationship was established by plotting NH3 yield vs. the oxidation state of Cu, indicating that the increase of Cu+ content leads to an enhanced NO3 - -to-NH3 conversion activity. Under a low NO3 - -N concentration of 100 ppm, the optimal Cu(B) catalyst displays a 100 % NO3 - -to-NH3 conversion at -0.55 to -0.6 V vs. RHE, and a record-high NH3 yield of 309 mmol h-1  gcat -1 , which is more than 25 times compared with the pristine Cu nanoparticles (12 mmol h-1  gcat -1 ). This research provides an effective method for conversion of dilute NO3 - to NH3 , which has certain guiding significance for the efficient and green conversion of wastewater in the future.
    [Abstract] [Full Text] [Related] [New Search]