Tuning Ag content in Au–Ag nanosponges for superior SERS detection

Hui Mei; Haili Bai; Shenwei Bai; Xuanhua Li; Xing Zhao; Laifei Cheng

doi:10.1016/j.matlet.2018.07.069

Tuning Ag content in Au–Ag nanosponges for superior SERS detection

Hui Mei, Haili Bai, Shenwei Bai, Xuanhua Li, Xing Zhao, Laifei Cheng

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Au–Ag nanosponges have been investigated by previous research, however, SERS performance of the material has not been studied systematically. Herein, experiments with different Ag deposition cycle durations (up to 12 cycles) were conducted to obtain substrates with varying Ag content. Rhodamine 6G and (Bu₄N)₂[Ru(dcbpyH)₂-(NCS)₂] were used to investigate the SERS performance of different substrates. The most intense enhancement Raman spectrum was observed on Au–Ag hybrid nanosponges substrate after 1 cycle of Ag deposition. The peak intensities of R6G and N719 on the substrate reach 25 and 7 times higher values, respectively, than those on Au–Ag alloy nanoparticles substrate.

Original language	English
Pages (from-to)	24-27
Number of pages	4
Journal	Materials Letters
Volume	230
DOIs	https://doi.org/10.1016/j.matlet.2018.07.069
State	Published - 1 Nov 2018

Keywords

Ag deposition cycles
Enhanced Raman spectroscopy
Hotspots
Nanoporous particles
R6G/N719 molecule

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10.1016/j.matlet.2018.07.069

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title = "Tuning Ag content in Au–Ag nanosponges for superior SERS detection",

abstract = "Au–Ag nanosponges have been investigated by previous research, however, SERS performance of the material has not been studied systematically. Herein, experiments with different Ag deposition cycle durations (up to 12 cycles) were conducted to obtain substrates with varying Ag content. Rhodamine 6G and (Bu4N)2[Ru(dcbpyH)2-(NCS)2] were used to investigate the SERS performance of different substrates. The most intense enhancement Raman spectrum was observed on Au–Ag hybrid nanosponges substrate after 1 cycle of Ag deposition. The peak intensities of R6G and N719 on the substrate reach 25 and 7 times higher values, respectively, than those on Au–Ag alloy nanoparticles substrate.",

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author = "Hui Mei and Haili Bai and Shenwei Bai and Xuanhua Li and Xing Zhao and Laifei Cheng",

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T1 - Tuning Ag content in Au–Ag nanosponges for superior SERS detection

AU - Mei, Hui

AU - Bai, Haili

AU - Bai, Shenwei

AU - Li, Xuanhua

AU - Zhao, Xing

AU - Cheng, Laifei

PY - 2018/11/1

Y1 - 2018/11/1

N2 - Au–Ag nanosponges have been investigated by previous research, however, SERS performance of the material has not been studied systematically. Herein, experiments with different Ag deposition cycle durations (up to 12 cycles) were conducted to obtain substrates with varying Ag content. Rhodamine 6G and (Bu4N)2[Ru(dcbpyH)2-(NCS)2] were used to investigate the SERS performance of different substrates. The most intense enhancement Raman spectrum was observed on Au–Ag hybrid nanosponges substrate after 1 cycle of Ag deposition. The peak intensities of R6G and N719 on the substrate reach 25 and 7 times higher values, respectively, than those on Au–Ag alloy nanoparticles substrate.

AB - Au–Ag nanosponges have been investigated by previous research, however, SERS performance of the material has not been studied systematically. Herein, experiments with different Ag deposition cycle durations (up to 12 cycles) were conducted to obtain substrates with varying Ag content. Rhodamine 6G and (Bu4N)2[Ru(dcbpyH)2-(NCS)2] were used to investigate the SERS performance of different substrates. The most intense enhancement Raman spectrum was observed on Au–Ag hybrid nanosponges substrate after 1 cycle of Ag deposition. The peak intensities of R6G and N719 on the substrate reach 25 and 7 times higher values, respectively, than those on Au–Ag alloy nanoparticles substrate.

KW - Ag deposition cycles

KW - Enhanced Raman spectroscopy

KW - Hotspots

KW - Nanoporous particles

KW - R6G/N719 molecule

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U2 - 10.1016/j.matlet.2018.07.069

DO - 10.1016/j.matlet.2018.07.069

M3 - 文章

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SN - 0167-577X

VL - 230

SP - 24

EP - 27

JO - Materials Letters

JF - Materials Letters

ER -

Tuning Ag content in Au–Ag nanosponges for superior SERS detection

Abstract

Keywords

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