UCL  IRIS
Institutional Research Information Service
UCL Logo
Please report any queries concerning the funding data grouped in the sections named "Externally Awarded" or "Internally Disbursed" (shown on the profile page) to your Research Finance Administrator. Your can find your Research Finance Administrator at https://www.ucl.ac.uk/finance/research/rs-contacts.php by entering your department
Please report any queries concerning the student data shown on the profile page to:

Email: portico-services@ucl.ac.uk

Help Desk: http://www.ucl.ac.uk/ras/portico/helpdesk
Publication Detail
N₂ Electroreduction to NH₃ by Selenium Vacancy-Rich ReSe₂ Catalysis at an Abrupt Interface
Abstract
Vacancy engineering has been proved repeatedly as an adoptable strategy to boost electrocatalysis, while its poor selectivity restricts the usage in nitrogen reduction reaction (NRR) as overwhelming competition from hydrogen evolution reaction (HER). Revealed by density functional theory calculations, the selenium vacancy in ReSe 2 crystal can enhance its electroactivity for both NRR and HER by shifting the d -band from -2.91 to -2.33 eV. To restrict the HER, we report a novel method by burying selenium vacancy-rich ReSe 2 @carbonized bacterial cellulose (V r -ReSe 2 @CBC) nanofibers between two CBC layers, leading to boosted Faradaic efficiency of 42.5% and ammonia yield of 28.3 μg h -1 cm -2 at a potential of -0.25 V at an abrupt interface. As demonstrated by the nitrogen bubble adhesive force, superhydrophilic measurements, and COMSOL Multiphysics simulations, the hydrophobic and porous CBC layers can keep the internal V r -ReSe 2 @CBC nanofibers away from water coverage, leaving more unoccupied active sites for the N 2 reduction (especially for the potential determining step of proton-electron coupling and transferring processes as *HNNH 2 → *H 2 NNH 2 ).
Publication data is maintained in RPS. Visit https://rps.ucl.ac.uk
 More search options
UCL Researchers
Author
Faculty of Maths & Physical Sciences
Author
Dept of Chemistry
University College London - Gower Street - London - WC1E 6BT Tel:+44 (0)20 7679 2000

© UCL 1999–2011

Search by