Efficient detecting of TNT molecules using palladium nanoparticles/ cross shape pores like structure porous silicon

Jabbar, Allaa A.; Alwan, Alwan M.

doi:10.1016/j.vibspec.2019.102933

Cited by 10 publications

(16 citation statements)

References 32 publications

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“…[39] Au NPs/Polymethacrylate Imidacloprid 3.9×10 −5 M n/a. [47] Pd NPs/PSi TNT 10 −7 M 2.5×10 6 [3] Pd film Benzenethiol n/a. 1.8×10 3 [48] Ag-Pd alloy nanostructures Rhodamine 6G 10 −9 M 2.6×10 8 [49] Pd nanoboxes 4-mercaptopryidine n/a.…”

Section: = × ×mentioning

confidence: 99%

“…Nevertheless, the low signal conversion efficiency, low scattering cross section and high fluorescence interference of the analyte led to low Raman signal and weak response during the detection. The SERS technique depending on the plasmonic properties of the surface of the transition metals and noble metals (ordinarily Co, Ni, Ag, Cu, Au and Pd nanoparticles) has been extensively exploited towards amplification of Raman signals [1][2][3][4][5][6]. Therefore, applying SERS, the highly concerning issue of the comparatively weak sensitivity of RS was lastly overwhelmed, and SERS is widely accepted as a reliable technique to get molecular data from biological and chemical molecules on surfaces as well as in solutions [7].…”

Section: Introductionmentioning

confidence: 99%

“…This EDX analysis confirms the existence of Pd NPs on the PSi layer. The appearance of a small spectral line of O in the EDX analysis is likely owing to the aging effect of the PSi layer where some of the Si-H bond could be transformed to more stable bond such as Si˗O[3].The XRD patterns obtained for starting Si wafer, PSi and PSi-Pd NPs substrates are presented in Fig. 2(a).…”

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confidence: 99%

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Immersion-plated Palladium Nanoparticles onto Meso-porous Silicon Layer as Novel SERS Substrate for Sensitive Detection of Imidacloprid Pesticide

Al-Syadi

Faisal

Harraz

et al. 2020

Preprint

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Herein, we report a rapid and highly effective methodology for the fabrication of active and stable surface-enhanced Raman scattering (SERS) substrate by an electrochemical anodization and immersion plating routes. Porous silicon (PSi) layers were fabricated by the electrochemical anodization of a silicon wafer in ethanoic fluoride solution, followed by uniformly deposition of palladium nanoparticles (Pd NPs) via a simple immersion plating technique. The structural features and morphology of fabricated frameworks of PSi-Pd NPs have been investigated by field emission scanning electron microscopy (FE-SEM) with energy dispersive X-ray (EDX), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FT-IR) spectra. The PSi substrate demonstrates a meso-porous morphology with good distribution, good pore density and average pore sizes around 20 nm. The SERS performance of Si–Pd NPs and PSi–Pd NPs substrates has been examined taking imidacloprid (an insecticide) as a target analyte. The SERS signal of imidacloprid using PSi–Pd NPs substrate exhibited immense enhancement compared to the Si-Pd NPs substrate. The active substrate revealed excellent detectable performance with a concentration as low as 10-9 M imidacloprid and an enhancement factor (EF) of 1.2×105. This large EF is fundamentally ascribed to the combined effect of electromagnetic improvement and charge transfer mechanism. Additionally, no aging effect was observed for the present substrates kept in air for two weeks. Striking enhancement in Raman spectral signals obtained with the current PSi–Pd NPs substrates provides a simple and smooth platform towards the sensitive detection of various target analytes.

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Section: = × ×mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Immersion-plated Palladium Nanoparticles onto Meso-porous Silicon Layer as Novel SERS Substrate for Sensitive Detection of Imidacloprid Pesticide

Al-Syadi

Faisal

Harraz

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…Nevertheless, the low signal conversion efficiency, low scattering cross section and high fluorescence interference of the analyte led to low Raman signal and weak response during the detection. The surface-enhanced Raman scattering (SERS) technique depending on the plasmonic properties of the surface of the transition metals and noble metals (ordinarily Co, Ni, Ag, Cu, Au and Pd nanoparticles) has been extensively exploited towards amplification of Raman signals [1][2][3][4][5][6] . Therefore, applying SERS, the highly concerning issue of the comparatively weak sensitivity of RS was lastly overwhelmed, and SERS is widely accepted as a reliable technique to get molecular data from…”

mentioning

confidence: 99%

“…Nevertheless, the features of utilizing metallic nanostructure have considerable recognition in SERS detection with ultra-sensitive responses 4,[10][11][12] . Exploitation of transition metals like Pd for the amplification of SERS signal is considered to be significant approach with promising future prospective of Raman application to improve novel SERS active substrate with high sensitivity 3,13 . On the other hand, much research has been focused on porous silicon (PSi) layers SERS substrates to explore its highly desirable characteristic features like open porous structures and its massive interior surface area 1,14 .…”

mentioning

confidence: 99%

Immersion-plated palladium nanoparticles onto meso-porous silicon layer as novel SERS substrate for sensitive detection of imidacloprid pesticide

Al-Syadi

Faisal

Harraz

et al. 2021

Sci Rep

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Herein, we demonstrate the effectiveness of surface-enhanced Raman scattering (SERS) to detect trace concentration of potentially harmful imidacloprid pesticide. To achieve this ultimate objective, a rapid and highly effective methodology for the fabrication of active and stable porous silicon (PSi) plated palladium nanoparticles (PdNPs) SERS substrates by an electrochemical anodization and immersion plating routes was applied. The PSi layers were fabricated by the electrochemical anodization of a silicon wafer in ethanoic fluoride solution, followed by uniformly deposition of PdNPs via a simple immersion plating technique. The structural features and morphology of fabricated frameworks of PSi-Pd NPs have been investigated by field emission scanning electron microscopy (FE-SEM) with energy dispersive X-ray (EDX), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FT-IR) spectra. The PSi substrate demonstrates a meso-porous morphology with good distribution, good pore density and average pore sizes around 20 nm. The SERS performance of Si–Pd NPs and PSi–Pd NPs substrates has been examined taking imidacloprid (an insecticide) as a target analyte. The SERS signal of imidacloprid using PSi–Pd NPs substrate exhibited immense enhancement compared to the Si-Pd NPs substrate. The active substrate revealed excellent detectable performance with a concentration as low as 10–9 M imidacloprid and an enhancement factor (EF) of 1.2 × 105. This large EF is fundamentally ascribed to the combined effect of the electromagnetic improvement and charge transfer mechanisms. Additionally, no aging effect was observed for the present substrates kept in air for two weeks. Striking enhancement in Raman spectral signals obtained with the current PSi–Pd NPs substrates can provide a simple and smooth platform towards the sensitive detection of various target analytes.

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Applications of surface‐enhanced Raman spectroscopy in environmental detection

Terry

Sanders

Potoff

et al. 2022

Analytical Science Advances

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As the human population grows, the anthropogenic impacts from various agricultural and industrial processes produce unwanted contaminants in the environment. The accurate, sensitive and rapid detection of such contaminants is vital for human health and safety. Surface-enhanced Raman spectroscopy (SERS) is a valuable analytical tool with wide applications in environmental contaminant monitoring. The aim of this review is to summarize recent advancements within SERS research as it applies to environmental detection, with a focus on research published or accessible from January 2021 through December 2021 including early-access publications. Our goal is to provide a wide breadth of information that can be used to provide background knowledge of the field, as well as inform and encourage further development of SERS techniques in protecting environmental quality and safety. Specifically, we highlight the characteristics of effective SERS nanosubstrates, and explore methods for the SERS detection of inorganic, organic, and biological contaminants including heavy metals, pharmaceuticals, plastic particles, synthetic dyes, pesticides, viruses, bacteria and mycotoxins. We also discuss the current limitations of SERS technologies in environmental detection and propose several avenues for future investigation. We encourage researchers to fill in the identified gaps so that SERS can be implemented in a real-world environment more effectively and efficiently, ultimately providing reliable and timely data to help and make science-based strategies and policies to protect environmental safety and public health.

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Efficient detecting of TNT molecules using palladium nanoparticles/ cross shape pores like structure porous silicon

Cited by 10 publications

References 32 publications

Immersion-plated Palladium Nanoparticles onto Meso-porous Silicon Layer as Novel SERS Substrate for Sensitive Detection of Imidacloprid Pesticide

Immersion-plated Palladium Nanoparticles onto Meso-porous Silicon Layer as Novel SERS Substrate for Sensitive Detection of Imidacloprid Pesticide

Immersion-plated palladium nanoparticles onto meso-porous silicon layer as novel SERS substrate for sensitive detection of imidacloprid pesticide

Applications of surface‐enhanced Raman spectroscopy in environmental detection

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