Chiral plasmonic Au@Pt nanoparticles for detection of H2O2 and Hg2+ and enantiomeric differentiation

The Anh Quang; Thi My Cam Tran; Tejraj M Aminabhavi; Lalitha Gnanasekaran; Yasser Vasseghian; Sang-Woo Joo

doi:10.1016/j.jenvman.2024.123561

Chiral plasmonic Au@Pt nanoparticles for detection of H₂O₂ and Hg²⁺ and enantiomeric differentiation

J Environ Manage. 2024 Dec 13:373:123561. doi: 10.1016/j.jenvman.2024.123561. Online ahead of print.

Authors

The Anh Quang¹, Thi My Cam Tran¹, Tejraj M Aminabhavi², Lalitha Gnanasekaran³, Yasser Vasseghian⁴, Sang-Woo Joo⁵

Affiliations

¹ Department of Chemistry, Soongsil University, Seoul, 06978, South Korea.
² Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Hubballi, Karnataka, 580 031, India; Korea University, Seoul 02841, South Korea. Electronic address: aminabhavit@gmail.com.
³ Instituto de Alta Investigación, Universidad de Tarapacá, Arica, 1000000, Chile.
⁴ Department of Chemistry, Soongsil University, Seoul, 06978, South Korea; Centre for Herbal Pharmacology and Environmental Sustainability, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam-603103, Tamil Nadu, India. Electronic address: vasseghian@ssu.ac.kr.
⁵ Department of Chemistry, Soongsil University, Seoul, 06978, South Korea. Electronic address: sjoo@ssu.ac.kr.

PMID: 39673859
DOI: 10.1016/j.jenvman.2024.123561

Abstract

Chiral Au@Pt nanoparticles (NPs) with optically plasmonic and catalytic active surfaces were sustainably prepared to serve as label-free surface enhanced Raman scattering (SERS) platform to distinguish D- and L-enantiomers of alanine and tartaric acid. Surface morphologies were characterized by high-angle annular dark-field imaging-scanning transmission electron microscopy (HADDF-STEM) and selected area energy diffraction (SAED) patterns. The amounts of Pt on chiral Au NPs were estimated by the inductively coupled plasma-optical emission spectrometer (ICP-OES) and X-ray diffraction (XRD). The versatile applications including the environmental hazardous species monitoring and the fundamental enantiomeric differentiation are demonstrated for the novelty of prepared materials. Au@Pt NPs were used as a unique platform of H₂O₂ and Hg²⁺ concentrations using UV-Vis absorption and surface enhanced Raman scattering (SERS). The chiral Au@Pt NP platform may provide an efficient approach to achieve chiral nanocatalysis for numerous chemical reactions.

Keywords: Chiral core-shell structures; Enantiometric differentiation; Environmental monitoring; Plasmonic Au@Pt nanoparticles; Surface-enhanced Raman scattering.