Cited by 467CO2 Reduction Techniques and CatalystsElectrocatalysts for Energy ConversionCatalysts for Methane Reforming

Nitrogen‐Doped Carbon Nanotube Arrays for High‐Efficiency Electrochemical Reduction of CO 2 : On the Understanding of Defects, Defect Density, and Selectivity

Sharma, Pranav P., Wu, Jingjie, Yadav, Ram Manohar, Liu, Mingjie, Wright, Christopher J., Tiwary, Chandra Sekhar, Yakobson, Boris I., Lou, Jun +2 more·2015·Angewandte Chemie International Edition

Abstract

Nitrogen‐doped carbon nanotubes (NCNTs) have been considered as a promising electrocatalyst for carbon‐dioxide‐reduction reactions, but two fundamental chemistry questions remain obscure: 1) What are the active centers with respect to various defect species and 2) what is the role of defect density on the selectivity of NCNTs? The aim of this work is to address these questions. The catalytic activity of NCNTs depends on the structural nature of nitrogen in CNTs and defect density. Comparing with pristine CNTs, the presence of graphitic and pyridinic nitrogen significantly decreases the overpotential (ca. −0.18 V) and increases the selectivity (ca. 80 %) towards the formation of CO. The experimental results are in congruent with DFT calculations, which show that pyridinic defects retain a lone pair of electrons that are capable of binding CO 2 . However, for graphitic‐like nitrogen, electrons are located in the π* antibonding orbital, making them less accessible for CO 2 binding.

Integrity signals

Registry

Crossref · 10.1002/anie.201506062

Cites

37 of 37 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Various studies have utilized bulk sensitive in situ XANES spectroscopy to show that Cu+ is stable during the course of CO2RR, a finding recently supported by another study using in situ soft XAS measurements.

    “Various studies [100,101] have utilized bulk sensitive in situ X-ray absorption near-edge structure (XANES) spectroscopy to show that Cu + is stable during the course of CO2RR, a finding recently supported by another study using in situ soft XAS measurements (Figure .6a,b).[102]”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Sharma, P. P., Wu, J., Yadav, R. M., Liu, M., Wright, C. J., Tiwary, C. S., Yakobson, B. I., Lou, J., Ajayan, P. M., & Zhou, X.
Affiliations
  • University of South Carolina (US)
  • Rice University (US)
Corresponding author
  • Lou, Jun
  • Ajayan, Pulickel M.
  • Zhou, Xiao‐Dong
Venue
Angewandte Chemie International Edition
Publisher
Wiley
Published
2015-09-25
Volume
54
Issue
46
Pages
13701-13705
ISSN
  • 1433-7851 (ISSN-L)
  • 1521-3773
OpenAlex
W2137212104
Cited by
467
References
37
Citations by year
2026: 14 · 2025: 22 · 2024: 38 · 2023: 29 · 2022: 47 · 2021: 58 · 2020: 76 · 2019: 72 · 2018: 68 · 2017: 26 · 2016: 16 · 2015: 1
FWCI
10.96
Type
journal article
Language
en
Open access
closed
Locations
  • Angewandte Chemie International Edition (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation (DMR-1006113)
  • Office of Naval Research (N00014-15-1-2251)
  • UGC India
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Chemical Engineering › Catalysis › Catalysts for Methane Reforming
Keywords
nitrogen-doped carbon nanotubes, electrochemical CO2 reduction, pyridinic nitrogen, graphitic nitrogen, defect density, CO selectivity, CO2 binding, active site, overpotential, DFT calculations

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review