journal article·2022-09-27

Serrated Au Nanoplates via the Sharpening Etching Mode

Bowen He, Yuntao Wang, Mengmeng Zhang, Yue Xu, Yonglong Zheng, Xi Liu, Hong Wang, Hongyu Chen

Chemistry of Materials· Volume 34· Issue 18
Publisher page

Abstract

In contrast to the conventional mode of etching where nanostructures always become rounder, we show a new etching mode that could generate lines of serrated sawteeth at the edge of Au nanoplates. Dynamic ligand control would lead to uniform etching, whereas static ligand control would completely inhibit etching, none of which could explain the sharpening teeth with partial etching. We propose to combine the concept of on–off ligand dynamics with curvature-dependent affinity and dynamic etching competition, so as to form a coherent mechanistic explanation. The ability to create regularly arranged teeth is a significant synthetic advance that would open new applications such as nanoscale cutting tools.
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Research context

OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Nanowire Synthesis and Applications · Plasmonic and Surface Plasmon Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, P. R. China

In-situ Center for Physical Sciences, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China

Department of Environmental Science and Engineering, University of Science and Technology of China, 230026 Hefei, P. R. China

School of Science, Westlake University, 310064 Hangzhou, P. R. China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Zhejiang Province

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