Cellulose and Vanadium Plasmonic Sensor to Measure Ni2+ Ions

Abstract

A novel vanadium–cellulose composite thin film-based on angular interrogation surface plasmon resonance (SPR) sensor for ppb-level detection of Ni(II) ion was developed. Experimental results show that the sensor has a linear response to the Ni(II) ion concentrations in the range of 2–50 ppb with a determination coefficient (R2) of 0.9910. This SPR sensor can attain a maximum sensitivity (0.068° ppb−1), binding affinity constant (1.819 × 106 M−1), detection accuracy (0.3034 degree−1), and signal-to-noise-ratio (0.0276) for Ni(II) ion detection. The optical properties of thin-film targeting Ni(II) ions in different concentrations were obtained by fitting the SPR reflectance curves using the WinSpall program. All in all, the proposed Au/MPA/V–CNCs–CTA thin-film-based surface plasmon resonance sensor exhibits better sensing performance than the previous film-based sensor and demonstrates a wide and promising technology candidate for environmental monitoring applications in the future.

Multiple protein‐patterned surface plasmon resonance biochip for the detection of human immunoglobulin‐G

“…It is interesting to observe that sensor response is linear for a wide range of concentration. The statistical measure R 2 , known as the coefficient of determination is used to determine the closeness of the data to any fitted regression line [84,85]. The SPR Biochip I produced linear response in the concentration range 45-240 μg/mL with R 2 values 0.988, 0.99198, and 0.99314, respectively for M-aH-IgG, G-aH-IgG, and R-aH-IgG (Figure 7B).…”

Recent Developments in Plasmonic Sensors of Phenol and Its Derivatives

“…Plasmonic nanostructured materials have been well known as one of the most significant keys leading to the success of sensing technologies thanks to their effective Ramanactive substrates. Among various nanomaterials, Au and Ag as noble metals have been adapted as a potential platform, which has contributed to the sensitive Raman detection [5,100]. Furthermore, the unique shape and size of noble metals induce highly dense plasmonic hotspots to increase the sensitivity of the Raman method.…”

“…Plasmonic resonance-based optical sensor technology has been considered to be an efficient method applied for sensing techniques of either indoor or outdoor carbon dioxide molecules [1], various gases [2], inorganic arsenic compounds [3], and pesticides [4]. Optical sensors have been known as simple analytical techniques to demonstrate numerous advantages such as facile design and effective detection, leading to promising potential applications in environmental metal ion monitoring [5]. Recently, plasmonic nanomaterials [6] and 2D materials [7] have rapidly emerged as unique sensing platforms for varieties of engineering applications thanks to their specific features such as enhanced electrical, optical, and electrochemical signals.…”