Polyelectrolyte Assisted Synthesis and Enhanced Oxygen Reduction Activity of Pt Nanocrystals with Controllable Shape and Size
Abstract
The shape control of platinum nanocrystals is significant to the enhancement of their catalytic performance in terms of activity and selectivity. However, it still remains a major challenge to prepare Pt nanocrystals with tunable shape and clean surface in an eco-friendly way. This article develops a facile and green strategy to prepare well tuned platinum nanocrystals employing poly(diallyldimethylammonium chloride) (PDDA) as the capping agent, reductant, and stabilizer simultaneously in a facile hydrothermal process. It is identified that the variation of PDDA concentration is crucial to control the growth of crystalline facets, leading to the formation of cubic, truncated cubic, and octahedral Pt nanocrystals with sizes tunable from ca. 17 nm to ca. 50 nm. The resultant Pt nanocrystals exhibit excellent electrocatalytic activity and stability toward the oxygen reduction reaction (ORR) in acidic media compared with those of commercial Pt black and the state-of-the-art Pt/C catalyst. It is proposed that the preferential Pt surface and the decoration of PDDA, which modulates the electronic structures and electrooxidation of Pt nanocrystals, synergistically contribute to the enhanced catalytic performance.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
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?
Cathodic ORR kinetics is much lower than HOR kinetics, thus requiring much more Pt catalysts than the anode and primarily leading to increased cost.
“In contrast, the cathodic ORR kinetics is much lower than the HOR kinetics, thus requiring much more Pt catalysts than the anode and primarily leading to increased cost [17,18].”
From Recent Advances on PEM Fuel Cells: From Key Materials to Membrane Electrode Assembly (2023) · cites this paper as [17]
Cites
Platinum-Based Oxygen Reduction Electrocatalysts
Wu, J., & Yang, H. (2013) · Accounts of Chemical Research · doi:10.1021/ar300359w · Cited by 1,050 · see citing works
Pt Nanocrystals: Shape Control and Langmuir−Blodgett Monolayer Formation
Song, H., Kim, F., Connor, S., Somorjai, G. A., & Yang, P. (2005) · The Journal of Physical Chemistry B · doi:10.1021/jp0464775 · Cited by 544 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Recent Advances on PEM Fuel Cells: From Key Materials to Membrane Electrode Assembly
Mo, S., Du, L., Huang, Z., Chen, J., Zhou, Y., Wu, P., Meng, L., Wang, N., Xing, L., Zhao, M., et al. (2023) · Electrochemical Energy Reviews · doi:10.1007/s41918-023-00190-w · Cited by 277 · see citing works
“In contrast, the cathodic ORR kinetics is much lower than the HOR kinetics, thus requiring much more Pt catalysts than the anode and primarily leading to increased cost [17, 18].”
Self-citationDu, L., Zhang, G., Liu, X., Hassanpour, A., Dubois, M., Tavares, A. C., & Sun, S. (2020) · Carbon Energy · doi:10.1002/cey2.73 · Cited by 120 · see citing works
Self-citation
- Authors
- Du, L., Zhang, S., Chen, G., Yin, G., Du, C., Tan, Q., Sun, Y., Qu, Y., & Gao, Y.
- Affiliations
- Harbin Institute of Technology (CN)
- Corresponding author
- Du, Chunyu
- ORCID
- Venue
- ACS Applied Materials & Interfaces
- Publisher
- American Chemical Society (ACS)
- Published
- 2014-07-31
- Volume
- 6
- Issue
- 16
- Pages
- 14043-14049
- ISSN
- 1944-8244 (ISSN-L)
- 1944-8252
- OpenAlex
- W2322513125
- Cited by
- 52
- References
- 2
- Citations by year
- 2025: 2 · 2024: 1 · 2023: 2 · 2022: 4 · 2021: 7 · 2020: 10 · 2019: 8 · 2018: 6 · 2017: 3 · 2016: 7 · 2015: 2
- FWCI
- 1.32
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- ACS Applied Materials & Interfaces (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Natural Science Foundation of China (21106024, 21276058, 21376057)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
- Physical Sciences › Chemistry › Organic Chemistry › Nanomaterials for catalytic reactions
- Keywords
- platinum nanocrystals, oxygen reduction reaction, poly(diallyldimethylammonium chloride), shape control, size control, hydrothermal synthesis, green synthesis, acidic electrocatalysis, surface electronic structure, catalyst stability
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
