journal article·2020-12-29

Seed-Morphology-Directed Synthesis of Concave Gold Nanocrystals with Tunable Sizes

Gongguo Zhang, Yanyun Ma, Zhiang Liu, Xiaowei Fu, Xiankang Niu, Fengli Qu, Chongdian Si, Yiqun Zheng

Langmuir· Volume 36· Issue 51
Publisher page

Abstract

We report the fabrication of concave gold (Au) nanocrystals with a set of morphologies and controlled sizes via seeded growth. Starting with Au seeds with a well-defined morphology and uniform size, cubic and rodlike Au nanocrystals with a noticeable concave feature could be successfully obtained, respectively. We also track the growth process and record the shape evolution process. The effect of several reaction parameters on product morphology, such as capping agent and concentration of Ag+, are systematically investigated. Their optical and electrochemical properties are investigated via UV–vis extinction spectroscopy and cyclic voltammetry, respectively. Compared to spherical counterparts, the current concave Au nanocrystals exhibit a noticeable red shift of the absorbance peak in UV–vis extinction spectra and characterized electrochemical behavior of stepped facets, illustrating the morphological advantage.
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Research context

OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Copper-based nanomaterials and applications · Nanomaterials for catalytic reactions

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

Affiliations

Department of Chemistry and Chemical Engineering, Jining University, Qufu, Shandong 273155, P.R. China

Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, P.R. China

School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273155, China

Funding

State Administration of Foreign Experts Affairs · Collaborative Innovation Center of Suzhou Nano Science and Technology · Department of Education of Shandong Province · Ministry of Education of the People's Republic of China · Government of Shandong Province · National Natural Science Foundation of China · Priority Academic Program Development of Jiangsu Higher Education Institutions · Key Research and Development Project of Jining · Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University

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