A novel room-temperature aqueous synthesis for gold nanoparticle-embedded silver cubic mesh nanostructures using AgCl templates via a template-assisted coreduction method is developed. The cubic AgCl templates are coreduced in the presence of AuCl4 − and Ag+, resulting in the reduction of AuCl4 − into gold nanoparticles on the outer region of AgCl templates, followed by the reduction of AgCl and Ag+ into silver cubic mesh nanostructures. Removal of the template clearly demonstrates the delicately designed silver mesh nanostructures embedded with gold nanoparticles. The synthetic mechanism, structural properties, and surface functionalization are spectroscopically investigated. The plasmonic photocatalysis of the cubic mesh nanostructures for the degradation of organic pollutants and removal of highly toxic metal ions is investigated; the photocatalytic activity of the cubic mesh nanostructures is superior to those of conventional TiO2 catalysts and they are catalytically functional even in natural water, owing to their high surface area and excellent chemical stability. The synthetic development presented in this study can be exploited for the highly elaborate, yet, facile design of nanomaterials with outstanding properties.
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea (NRF), funded by the Korean government, MSIP (NRF-2016R1A5A1010148, NRF-2015R1C1A1A01053865, and NRF-2015M3A9D7031015), and the Global Ph.D. Fellowship Program of NRF funded by the Ministry of Education (grant# 2013H1A2A1032685). The ICP-AES data were obtained using the facility of the Korea Basic Science Institute (KBSI; Seoul, Republic of Korea).
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- environmental sustainability
- plasmonic photocatalysts
- template synthesis
ASJC Scopus subject areas
- Materials Science(all)