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Mercuric Contamination: Ultrasensitive SERS Substrate Integrated with Uniform Subnanometer Scale “Hot Spots” Created by a Graphene Spacer for the Detection of Mercury Ions (Small 9/2017)
Author(s) -
Zhang Xingang,
Dai Zhigao,
Si Shuyao,
Zhang Xiaolei,
Wu Wei,
Deng Hongbing,
Wang Fubing,
Xiao Xiangheng,
Jiang Changzhong
Publication year - 2017
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201770048
Subject(s) - graphene , raman scattering , raman spectroscopy , materials science , detection limit , substrate (aquarium) , mercury (programming language) , ion , nanotechnology , analytical chemistry (journal) , optics , chemistry , environmental chemistry , chromatography , physics , organic chemistry , oceanography , geology , computer science , programming language
An ultrasensitive surface‐enhanced Raman scattering (SERS) substrate with large area uniform subnanometer “hot spots” is used to detect mercuric ions in water and sandy soil, by Hongbing Deng, Fubing Wang, Xiangheng Xiao, and co‐workers in article number 1603347. The detection limit is as low as 8.3 × 10 −9 m . The uniformity of the SERS substrate is proved by Raman mapping, and the physical mechanism of SERS enhancements is supported by the finite difference time domain method.