Journal Article

PUBDB-2025-04557

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Biopolymer‐Templated Hierarchical 3D‐Structured Gold Nanoparticle/Graphene Oxide Hybrid Materials for Ultrasensitive Surface‐Enhanced Raman Scattering

Guo, Y. ; Pan, G.Extern* ; Tu, S.Extern* ; Bulut, Y.Extern*DESY* ; Zhou, J.Extern* ; Jeromin, A.DESY* ; Keller, T. F.XFEL.EU*DESY* ; Stierle, A.XFEL.EU*DESY* ; Nemeth, G.Extern* ; Borondics, F. ; Sochor, B.Extern*DESY* ; Vayalil, S. K.DESY* ; Söderberg, L. D.Extern* ; Müller-Buschbaum, P.Extern* ; Roth, S. (Corresponding author)XFEL.EU*DESY*

2025
Wiley-VCH Weinheim

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Please use a persistent id in citations: doi:10.1002/adfm.202515801  doi:10.3204/PUBDB-2025-04557

Abstract: Surface-enhanced Raman scattering (SERS) is a highly advantageous analytical technique for detecting trace biological and chemical compounds. However, significant challenges remain in the cost-effective fabrication of large-area and homogenous SERS substrates. A simple and scalable approach utilizing a layer-by-layer spray deposition followed by thermal annealing is proposed to fabricate cellulose nanofibril (CNF) films loaded with gold nanoparticles (Au NPs) and graphene oxide (GO) hybrids as SERS substrates. These hybrid 3D structures comprising CNF/Au NPs/GO significantly enhance SERS sensitivity by both electromagnetic enhancement and chemical enhancement. Incorporating CNF as a 3D network enables a more uniform distribution of Au NPs/GO. Thermal annealing further induces hotspots. For instance, the annealed CNF/Au NPs/GO hybrid thin films achieve a detection limit of 1.0 × 10$^{−13}$ m and a high enhancement factor of 4.97 × 1011 for Rhodamine 6G. Grazing incidence small-angle X-ray scattering combined with nano-Fourier-transform infrared spectroscopy is first used to confirm the combined Raman enhancement mechanism of localized surface plasmon resonance and interface charge transfer with high spatial resolution. Therefore, the proposed methodology establishes a robust framework for the scalable fabrication of ultrasensitive SERS substrates.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Nanolab (FS-NL)
3. Sustainable Materials (FS-SMA)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. DFG project G:(GEPRIS)390776260 - EXC 2089: e-conversion (390776260) (390776260)

Experiment(s):

1. DESY NanoLab: Microscopy
2. PETRA Beamline P03 (PETRA III)

Appears in the scientific report 2025

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 15 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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