Preparation of a cobalt–Fe2+-based phosphate sensor using an annealing process and its electrochemical performance

Pang, Haitong; Cai, Weiming; Shi, Ce; Zhang, Yitao

doi:10.1016/j.elecom.2021.106933

Cited by 7 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Metals like cobalt and copper were mixed with other metals such as aluminum, iron, and molybdenum to reduce interferences, minimize response time, enhance sensitivity and improve stability of the electrode. [47][48][49]58,59 A solid-state electrode was fabricated using copper powder, aluminium powder, and aluminium phosphate. 47 The electrode showed a linear response from 10 −6 to 10 −1 M with a limit of detection <10 −6 M. The sensor had a rapid response time of <1 min.…”

Section: Ni Ohmentioning

confidence: 99%

“…The electrochemical performance of the electrodeposited Co-Fe electrode was improved by electrodepositing on an annealed gold film. 48 The annealing process introduced nano scale porous holes on the gold electrode resulting a change in surface area. The annealed electrode (LOD: 2.14 × 10 −6 M) exhibited a lower limit of detection compared to unannealed electrode (LOD: 3.41 × 10 −5 M).…”

Section: Ni Ohmentioning

confidence: 99%

See 1 more Smart Citation

Review—Solid State Sensors for Phosphate Detection in Environmental and Medical Diagnostics

Patel

Kruse

Selvaganapathy

2022

J. Electrochem. Soc.

View full text Add to dashboard Cite

Phosphorus is required for plants and humans to survive because it is needed for cell signaling, skeletal integrity, energy storage, and metabolism. Phosphorus measurements are performed using colorimetric and electrochemical methods. Colorimetry is the most accepted method for commercial devices while electrochemical systems are still in the research phase. Here we provide the first comprehensive review of solid-state sensors for phosphate monitoring. The review focuses on solid state reagent storage for colorimetric sensors and different materials used in solid state electrochemical sensors. The electrochemical sensors are further classified into three groups: potentiometric, amperometric, and voltammetric. All sensors are evaluated based on parameters such as measurement range, limit of detection (LOD), working pH, and response time. Finally, we discuss limitations of the current sensors and future directions for the development of these sensors.

show abstract

Section: Ni Ohmentioning

confidence: 99%

Section: Ni Ohmentioning

confidence: 99%

Review—Solid State Sensors for Phosphate Detection in Environmental and Medical Diagnostics

Patel

Kruse

Selvaganapathy

2022

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“… ( A , B) Schematic diagram of the fabrication of the nano‐Co/Fe 2+ sensor, the potential response curve, and linear fitting curve after annealing of the sensor. (Adapted with permission from [ 34 ], © (2021) Elsevier). ( C , D) Schematic diagram of the fabrication of the AgNP/MWCNT/GCE sensor, square wave voltammetry (SWVs) obtained by the sensor in the presence of different concentrations of hydroquinone (HQ), catechol (CC), bisphenol A (BPA), and phenol (Phe).…”

Section: Detection Of Nutrients and Phenolic Compoundsmentioning

confidence: 99%

Nanomaterials for electrochemical detection of pollutants in water: A review

et al. 2021

View full text Add to dashboard Cite

The survival of living beings, including humanity, depends on a continuous supply of clean water. However, due to the development of industry, agriculture, and population growth, an increasing number of wastewaters is discarded, and the negative effects of such actions are clear. The first step in solving this situation is the collection and monitoring of pollutants in water bodies to subsequently facilitate their treatment. Nonetheless, traditional sensing techniques are typically laboratory‐based, leading to potential diminishment in analysis quality. In this paper, the most recent developments in micro‐ and nano‐electrochemical devices for pollutant detection in wastewater are reviewed. The devices reviewed are based on a variety of electrodes and the sensing of three different categories of pollutants: nutrients and phenolic compounds, heavy metals, and organic matter. From these electrodes, Cu, Co, and Bi showed promise as versatile materials to detect a grand variety of contaminants. Also, the most commonly used material is glassy carbon, present in the detection of all reviewed analytes.

show abstract

“…16 In an alkaline environment, the reaction between orthophosphate and ammonium molybdate results in the formation of a blue complex, allowing for the determination of phosphorus content based on the absorbance of this complex. 17 However, executing this method is simple and resistant to interference from solution turbidity and other external factors, making continuous monitoring and onsite analysis challenging. 18 To address these limitations, researchers have explored the development of phosphate ion-selective electrodes based on chemical reactions between molybdenum and phosphate under alkaline conditions.…”

mentioning

confidence: 99%

Electrodeposition of Co-Mo Alloys and Its Applications in Electrochemical Sensing of Phosphate

Sethupathi,

Mariappan,

Alagesan

et al. 2024

J. Electrochem. Soc.

View full text Add to dashboard Cite

Quantification of phosphate ions in water ecosystems is crucial for maintaining a healthy aquatic environment and optimizing aquaculture parameters. While cobalt (Co) thin-film-modified electrodes are widely used as phosphate sensors, their selectivity and stability often require improvements for on-site measurement. The present work addresses this challenge by introducing a novel phosphate sensing platform utilizing Cobalt-Molybdenum (Co-Mo) alloy film deposited on copper substrate. The developed Co-Mo thin film sensor exhibited a good thermal stability (up to 60°C) and significantly improved the detection ranges (10−6 M to 10−2 M). The influence of electrolyte pH and temperature toward potentiometric sensing of phosphate were investigated and the conditions were optimized to improve the sensor sensitivity. The sensor showed a sensitivity of -56 mV.dec-1 with a good correlation coefficient (0.988). The detection limit was determined to be 0.987 µM and the relative standard deviation (RSD) was 1.3% (n=3). The Co-Mo thin film sensor exhibited negligible interference even in the presence of 10-fold excess concentrations of common interfering analytes, demonstrating its robust performance in real-world environment. To validate the field practicality, the sensor’s performance was successfully tested in real shrimp culture water samples, demonstrating its compatibility with complex environmental matrices.

show abstract

Preparation of a cobalt–Fe2+-based phosphate sensor using an annealing process and its electrochemical performance

Cited by 7 publications

References 15 publications

Review—Solid State Sensors for Phosphate Detection in Environmental and Medical Diagnostics

Review—Solid State Sensors for Phosphate Detection in Environmental and Medical Diagnostics

Nanomaterials for electrochemical detection of pollutants in water: A review

Electrodeposition of Co-Mo Alloys and Its Applications in Electrochemical Sensing of Phosphate

Contact Info

Product

Resources

About