Peptide-Assisted 2-D Assembly toward Free-Floating Ultrathin Platinum Nanoplates as Effective Electrocatalysts

Enbo Zhu, Xucheng Yan, Shiyi Wang, Mingjie Xu, Chen Wang, Haotian Liu, Jin Huang, Wang Xue, Jin Cai, Hendrik Heinz, Yujing Li*, Yu Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)

Abstract

We demonstrate the 2-D anisotropic formation of ultrathin free-floating Pt nanoplates from the assembly of small nanocrystals using T7 peptide (Ac-TLTTLTN-CONH2). As-formed nanoplates are rich in grain boundaries that can promote their catalytic activities. Furthermore, we demonstrate that a minor number of Pd atoms can selectively deposit on and stabilize the grain boundaries, which leads to enhanced structure stability. The Pd-enhanced Pt polycrystal nanoplates show great oxygen reduction reaction activities with 15.5 times higher specific activity and 13.7 times higher mass activity than current state-of-the-art commercial Pt/C electrocatalysts as well as 2.5 times higher mass activity for hydrogen evolution reaction compared with Pt/C.

Original languageEnglish
Pages (from-to)3730-3736
Number of pages7
JournalNano Letters
Volume19
Issue number6
DOIs
Publication statusPublished - 12 Jun 2019

Keywords

  • 2-D assembly
  • Ultrathin platinum nanoplates
  • electrocatalyst
  • peptide

Fingerprint

Dive into the research topics of 'Peptide-Assisted 2-D Assembly toward Free-Floating Ultrathin Platinum Nanoplates as Effective Electrocatalysts'. Together they form a unique fingerprint.

Cite this