Symmetry Breaking in Monometallic Nanocrystals toward Broadband and Direct Electron Transfer Enhanced Plasmonic Photocatalysis

Wei Shao, Qianqian Pan, Qiaoli Chen, Chongzhi Zhu, Weijian Tao, Haiming Zhu, Huijun Song, Xuelu Liu, Ping-Heng Tan, Guan Sheng, Tulai Sun, Xiaonian Li, Yihan Zhu

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Metallic nanocrystals manifest themselves as fascinating light absorbers for applications in plasmon-enhanced photocatalysis and solar energy harvesting. The essential challenges lie in harvesting the full-spectrum solar light and harnessing the plasmon-induced hot carriers at the metal–acceptor interface. To this end, a cooperative overpotential and underpotential deposition strategy is proposed to mitigate both the challenges. Specifically, by utilizing both ionic additive and thiol passivator to introduce symmetry-breaking growth over gold icosahedral nanocrystals, the microscopic origin can be attributed to the site-specific nucleation of stacking faults and dislocations. By adopting asymmetric crystal shape and unique surface facets, such nanocrystals attain high activity toward photocatalytic ammonia borane hydrolysis, arising from combined broadband plasmonic properties and enhanced direct transfer of hot electrons across the metal–adsorbate interface.
Original languageEnglish (US)
Pages (from-to)2006738
JournalAdvanced Functional Materials
Volume31
Issue number3
DOIs
StatePublished - Oct 7 2020

ASJC Scopus subject areas

  • Biomaterials
  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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