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Facile preparation of highly sensitive SERS substrates based on gold nanoparticles modified graphdiyne/carbon cloth.
- Source :
-
Applied Surface Science . Jan2023, Vol. 609, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- [Display omitted] • A novel gold nanoparticles (Au NPs)-modified graphdiyne/carbon cloth (Au NPs/GDY/CC) was prepared successfully by electrodeposition. • The unique triangular pore structure in the GDY plane enables more stable anchoring of Au NPs. • The synergistic effect between Au NPs and GDY in Au NPs/GDY/CC complex material significantly enhanced the SERS signal. As a new kind of 2D carbon allotrope, graphdiyne (GDY) has the characteristics of uniform pores and large specific surface area due to its unique electronic space arrangement structure. Therefore, we fabricated a novel gold nanoparticles (Au NPs)/GDY/carbon cloth (CC) SERS substrate by a simple electrodeposition process using GDY nanowall wrapping the CC as support. The effects of electrodeposition conditions on the microstructure and SERS activity of Au NPs/GDY/CC substrate were studied. Under the condition of optimizing deposition time and deposition voltage, the prepared Au NPs/GDY/CC substrate can detect 10-13 M with rhodamine 6G (R6G) as a probe molecule. The maximum enhancement factor (EF) is 2.2 × 1012, and the concentration of R6G is logarithmically correlated with the intensity of the SERS band with a linear correlation coefficient (R2) of 0.97036. These indicate that the Au NPs/GDY/CC substrate has good sensitivity. The prepared Au NPs/GDY/CC SERS substrate was applied to the detection of organic dyes of malachite green (MG) and methyl violet (MV) in water, and the detection limits of both can reach 10-9 M. This highly sensitive and high-performance SERS substrate has broad application prospects in the detection of organic dyes. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CARBON fibers
*GOLD
*MALACHITE green
*GENTIAN violet
*POROSITY
*ORGANIC dyes
Subjects
Details
- Language :
- English
- ISSN :
- 01694332
- Volume :
- 609
- Database :
- Academic Search Index
- Journal :
- Applied Surface Science
- Publication Type :
- Academic Journal
- Accession number :
- 160209238
- Full Text :
- https://doi.org/10.1016/j.apsusc.2022.155098