Long-Life and pH-Stable SnO2-Coated Au Nanoparticles for SHINERS

Julia Fernández-Vidal; Ana M Gómez-Marín; Leanne A H Jones; Chih-Han Yen; Tim D Veal; Vinod R Dhanak; Chi-Chang Hu; Laurence J Hardwick

doi:10.1021/acs.jpcc.2c02432

Long-Life and pH-Stable SnO₂-Coated Au Nanoparticles for SHINERS

J Phys Chem C Nanomater Interfaces. 2022 Jul 28;126(29):12074-12081. doi: 10.1021/acs.jpcc.2c02432. Epub 2022 Jul 13.

Authors

Julia Fernández-Vidal¹, Ana M Gómez-Marín², Leanne A H Jones³, Chih-Han Yen^{1

4}, Tim D Veal³, Vinod R Dhanak³, Chi-Chang Hu⁴, Laurence J Hardwick¹

Affiliations

¹ Stephenson Institute for Renewable Energy, Department of Chemistry, Peach Street, University of Liverpool, Liverpool L69 7ZF, United Kingdom.
² Department of Chemistry, Division of Fundamental Sciences (IEF) Aeronautics Institute of Technology (ITA) Praça Marechal Eduardo Gomes, 50 CEP 12228-900 São José dos Campos, São Paulo, Brazil.
³ Stephenson Institute for Renewable Energy and Department of Physics, Peach Street, University of Liverpool, Liverpool L69 7ZF, United Kingdom.
⁴ Department of Chemical Engineering, National Tsing Hua University, Hsinchu 300044, Taiwan.

Abstract

Shell-isolated nanoparticles (SHINs) with a 37 nm gold core and an 11 nm tin dioxide (SnO₂) coating exhibited long-life Raman enhancement for 3 months and a wide pH stability of pH 2-13 in comparison with conventional SiO₂-coated SHINs. Herein, Au-SnO₂ is demonstrated as a more durable SHIN for use in the technique Shell-Isolated Nanoparticles for Enhanced Raman Spectroscopy (SHINERS).