Ultrasensitive and reusable SERS probe for the detection of synthetic dyes in food industry through hybrid flower-shaped ZnO@Ag nanostructures

Barveen, Nazar Riswana; Wang, Tzyy-Jiann; Chang, Yun‐Ting; Yuan-Liu, Zhe

doi:10.1016/j.jallcom.2020.157952

Cited by 42 publications

(17 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Analytical enhancement factor (AEF) is an important criterion for analyzing the capability of SERS substrate to enhance the Raman signals. The AEFs of the Ag NP/PMMA SERS substrate for the detection of PT and FNT are evaluated using the following formula − where I SERS and I NR are the Raman peak intensities in the SERS spectrum and the normal Raman spectrum, and C SERS and C NR are the concentrations of probe molecules in the measurements of the SERS spectrum and the normal Raman spectrum. The AEFs for the intense peaks of PT at 1120, 1355, and 1595 cm –1 are calculated to be 1.10 × 10 8 , 3.25 × 10 8 , and 2.43 × 10 8 .…”

Section: Resultsmentioning

confidence: 99%

Transparent, Flexible Plasmonic Ag NP/PMMA Substrates Using Chemically Patterned Ferroelectric Crystals for Detecting Pesticides on Curved Surfaces

Wang

Barveen

Liu

et al. 2021

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

Transparent and flexible surface-enhanced Raman scattering (SERS) substrates have attracted much interest for the detection of probe molecules on the curved surfaces of real samples, but a facile route to fabricate such substrates is still lacking. Herein, we present a rationally designed, high-performance flexible SERS substrate fabricated using a simple drop and peel-off technique for the ultrasensitive detection of pesticides. The proposed SERS substrate consists of a polymethyl methacrylate (PMMA) film anchored with plasmonic silver nanoparticles (Ag NPs), which are photoreduced using chemically patterned ferroelectric templates. The photoreduced Ag NPs extracted onto the PMMA film offer strong electromagnetic enhancement and produce intensive hotspots for the effective enhancement of the Raman signal. They provide superior SERS performance for the detection of parathion (PT) and fenitrothion (FNT) at trace-level concentrations of 10–9 M and 10–10 M with excellent enhancement factors in the order of 108 and 109, respectively. Moreover, the Ag NP/PMMA SERS substrate has good spot-to-spot uniformity and batch-to-batch reproducibility with the reservation of high detection sensitivity even after the mechanical deformation of bending and torsion up to 50 cycles. The multiplex detection ability is also investigated for the simultaneous detection of PT and FNT. To ensure the practical feasibility, the in-situ, real-time detection of PT and FNT on the curved surfaces of tomato and lemon using a fiber-coupled Raman probe is performed with limits of detection of 4.24 × 10–8 M and 2.74 × 10–9 M. The proposed Ag NP/PMMA flexible SERS substrate possesses unique features, such as easy fabrication through a simple, economical, rapid process, and facilitates straightforward implementation of in-situ SERS detection on curved fruit/vegetable surfaces.

show abstract

Section: Resultsmentioning

confidence: 99%

Transparent, Flexible Plasmonic Ag NP/PMMA Substrates Using Chemically Patterned Ferroelectric Crystals for Detecting Pesticides on Curved Surfaces

Wang

Barveen

Liu

et al. 2021

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

show abstract

“…Initially, the glass substrates were cleaned by following the process in our previous work [21,22]. Twenty microliters of TiC solution was drop-casted on the cleaned glass substrate with the size of 0.5 cm × 0.5 cm and then dried at 60 °C for 4 h. The TiC-coated glass substrate was immersed in 0.01 M of the HAuCl 4 solution with the volume of 5 mL and then subjected to the UVC illumination with the center wavelength of 254 nm at a distance of 2 cm for different time periods from 10 to 50 min.…”

Section: Preparation Of Tic/au-npsmentioning

confidence: 99%

“…The enhancement degree of Raman signal using TiC/Au-NPs is further investigated by the enhancement factor (EF) calculated by the following equation [21,27]:…”

Section: Vibrational Mode Assignment Of Cpzmentioning

confidence: 99%

A photochemical approach to anchor Au NPs on MXene as a prominent SERS substrate for ultrasensitive detection of chlorpromazine

2021

Self Cite

View full text Add to dashboard Cite

As a novel two-dimensional (2D) material, metal carbide (MXene) has been identified as a hotspot research topic in the field of surface-enhanced Raman spectroscopy (SERS). Herein, we report the increment of SERS activity of titanium carbide (TiC) by incorporation of gold nanoparticles (Au NPs) by a facile photoreduction process for the detection of antipsychotic drug. TiC anchored with Au NPs produce a remarkable SERS enhancement by the synergistic action of chemical and electromagnetic mechanisms. The hotspots are formed in the nanometer-scale gaps between Au NPs on the TiC surface for the effective interaction with probe molecules. The proposed TiC/Au-NPs SERS substrate was employed for the detection of chlorpromazine (CPZ) with the wide linear range of 10 −1 -10 −10 M and the ultra-low limit of detection of 3.92 × 10 −11 M. Besides, the SERS effect of the optimized TiC/Au-NPs for the 532 nm excitation exhibits the enhancement factor in the order of 10 9 with the relative standard deviation of < 13% for the uniformity and < 8.80% for the reproducibility. To ensure the practical feasibility of the proposed TiC/Au-NPs SERS substrate, the spike and recovery method was used for the detection of CPZ in human biological fluids like urine and saliva. This work can open up a new approach to improve the SERS activity of MXene-based SERS substrate for practical applications, especially the determination of antipsychotic drugs in environmental pollution management.

show abstract

“…ZnO is inexpensive, biocompatible, chemically stable, and rich in morphological structure among the many semiconductors. The noble metal/ZnO hybrid structures are ideal materials for achieving a good SERS effect [ 32 , 33 ]. Additionally, the content and uniform distribution of noble metals on the ZnO surface are important and the formation of dense “hot spots” is beneficial to improving detection effects.…”

Section: Introductionmentioning

confidence: 99%

Ag Nanoparticles Decorated ZnO Nanorods as Multifunctional SERS Substrates for Ultrasensitive Detection and Catalytic Degradation of Rhodamine B

Chen

Zhu

et al. 2022

Nanomaterials

View full text Add to dashboard Cite

Industrial wastewater containing large amounts of organic pollutants is a severe threat to the environment and human health. Thus, the rapid detection and removal of these pollutants from wastewater are essential to protect public health and the ecological environment. In this study, a multifunctional and reusable surface-enhanced Raman scattering (SERS) substrate by growing Ag nanoparticles (NPs) on ZnO nanorods (NRs) was produced for detecting and degrading Rhodamine B (RhB) dye. The ZnO/Ag substrate exhibited excellent sensitivity, and the limit of detection (LOD) for RhB was as low as 10−11 M. Furthermore, the SERS substrate could efficiently degrade RhB, with a degradation efficiency of nearly 100% within 150 min. Moreover, it retained good SERS activity after multiple repeated uses. The interaction between Ag NPs, ZnO, and RhB was further investigated, and the mechanism of SERS and photocatalysis was proposed. The as-prepared ZnO/Ag composite structure could be highly applicable as a multifunctional SERS substrate for the rapid detection and photocatalytic degradation of trace amounts of organic pollutants in water.

show abstract

Ultrasensitive and reusable SERS probe for the detection of synthetic dyes in food industry through hybrid flower-shaped ZnO@Ag nanostructures

Cited by 42 publications

References 42 publications

Transparent, Flexible Plasmonic Ag NP/PMMA Substrates Using Chemically Patterned Ferroelectric Crystals for Detecting Pesticides on Curved Surfaces

Transparent, Flexible Plasmonic Ag NP/PMMA Substrates Using Chemically Patterned Ferroelectric Crystals for Detecting Pesticides on Curved Surfaces

A photochemical approach to anchor Au NPs on MXene as a prominent SERS substrate for ultrasensitive detection of chlorpromazine

Ag Nanoparticles Decorated ZnO Nanorods as Multifunctional SERS Substrates for Ultrasensitive Detection and Catalytic Degradation of Rhodamine B

Contact Info

Product

Resources

About