Metal Oxide Nanomaterials for Electrochemical Detection of Heavy Metals in Water

Akanji, Seyi Philemon; Ama, Onoyivwe Monday; Ray, Suprakas Sinha; Osifo, Peter Ogbemudia

doi:10.1007/978-3-030-43346-8_7

Cited by 4 publications

(4 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Researchers worldwide are actively investigating developing and optimizing nanocomposite materials for sensors for HMI detection. Researchers are exploring various nanocomposite materials, including GO, MOFs, CNTs, OCPs, MXenes-based nanocomposites, and metal oxide-based nanocomposites, to detect a range of HMIs [13][14][15][16][17][18]. These studies highlight the potential of nanocomposite-based sensors for detecting HMIs and demonstrate the importance of continued research and development in this field.…”

Section: Heavy Metal MCL (µG/l)mentioning

confidence: 99%

Electrochemical Detection of Heavy Metal Ions Based on Nanocomposite Materials

Shirsat,

Hianik

2023

J. Compos. Sci.

View full text Add to dashboard Cite

Heavy metal ions (HMIs) have acute toxic effects on health and are dangerous for human existence and the ecosystem. Therefore, their sensitive and selective detection is of great importance. In recent years, various nanocomposite materials have been used by researchers for the detection of HMIs by using various modalities of electrochemical techniques. This review summarizes the recent advances in developing electrochemical sensors based on numerous nanocomposite materials for detecting HMIs. Nanocomposite materials, such as metal–organic frameworks (MOFs), organic conducting polymer (OCPs), carbon nanotubes (CNTs), graphene oxide (GO), graphene/reduced graphene oxide (rGO), graphitic carbon nitride, metal oxide, chitosan, MXenes, metal nanoparticle-based nanocomposites, etc., have been explored by various researchers to improve the sensing properties of electrochemical sensors. This review emphasizes nanocomposite materials’ synthesis and characterization techniques, modalities for HMI detection using electrochemical techniques, and electrochemical sensors. Moreover, this review highlights the development of portable biosensors for detecting HMIs in real-world scenarios, such as environmental monitoring, food safety, and clinical diagnosis. This review also demonstrates the importance of electrochemical sensors based on nanocomposite materials as a reliable, sensitive, and selective tool for detecting HMIs.

show abstract

Section: Heavy Metal MCL (µG/l)mentioning

confidence: 99%

Electrochemical Detection of Heavy Metal Ions Based on Nanocomposite Materials

Shirsat,

Hianik

2023

J. Compos. Sci.

View full text Add to dashboard Cite

show abstract

“…However, nanostructured metal oxides/hydroxides nanomaterials easily aggregate due to their high surface energy, resulting in a significant decrease in accessible catalytic sites [ 130 ]. Nonetheless, tailoring the morphology of metal oxides/hydroxides to reduce agglomeration improves the surface area and surface functionality, leading to improved electrochemical performance [ 1 ]. Amongst various strategies developed to overcome this problem, one key solution is to support metal oxides on conductive materials, such as; nanostructured carbon materials [ 69 ] and metal NPs [ 45 ], amongst others.…”

Section: Nanocomposites In Electrochemical Sensors For Trace Metalmentioning

confidence: 99%

“…The key factor to mitigating trace metals pollution and keeping the water quality up to standard is the early detection of trace metals within the environmental water bodies [ 1 ]. Undoubtedly, the global economic expansion and industrial developments necessary to meet demand and the continued sustainability of human lives have been appreciated worldwide.…”

Section: Introductionmentioning

confidence: 99%

Nanocomposites for Electrochemical Sensors and Their Applications on the Detection of Trace Metals in Environmental Water Samples

Munonde

Nomngongo

2020

Sensors

View full text Add to dashboard Cite

The elevated concentrations of various trace metals beyond existing guideline recommendations in water bodies have promoted research on the development of various electrochemical nanosensors for the trace metals’ early detection. Inspired by the exciting physical and chemical properties of nanomaterials, advanced functional nanocomposites with improved sensitivity, sensitivity and stability, amongst other performance parameters, have been synthesized, characterized, and applied on the detection of various trace metals in water matrices. Nanocomposites have been perceived as a solution to address a critical challenge of distinct nanomaterials that are limited by agglomerations, structure stacking leading to aggregations, low conductivity, and limited porous structure for electrolyte access, amongst others. In the past few years, much effort has been dedicated to the development of various nanocomposites such as; electrochemical nanosensors for the detection of trace metals in water matrices. Herein, the recent progress on the development of nanocomposites classified according to their structure as carbon nanocomposites, metallic nanocomposites, and metal oxide/hydroxide nanocomposites is summarized, alongside their application as electrochemical nanosensors for trace metals detection in water matrices. Some perspectives on the development of smart electrochemical nanosensors are also introduced.

show abstract

“…However, most of the above-mentioned methods have major disadvantages, such as complexity, expensive, time consuming, bulky, require complicate pretreatment, and inconvenient for onsite and in situ analysis [ 14 ]. Compared with the abovementioned methods, electrochemical techniques have attracted great interest on the detection of heavy metal ions due to their remarkable sensitivity, portability, and low cost [ 1 , 15 , 16 ]. For this reason, there is an ongoing research on the development of rapid and friendly-user techniques for trace heavy metals detection suitable for in situ monitoring assays [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

MnO2@Reduced Graphene Oxide Nanocomposite-Based Electrochemical Sensor for the Simultaneous Determination of Trace Cd(II), Zn(II) and Cu(II) in Water Samples

2021

View full text Add to dashboard Cite

The rapid detection of trace metals is one of the most important aspect in achieving environmental monitoring and protection. Electrochemical sensors remain a key solution for rapid detection of heavy metals in environmental water matrices. This paper reports the fabrication of an electrochemical sensor obtained by the simultaneous electrodeposition of MnO2 nanoparticles and RGO nanosheets on the surface of a glassy carbon electrode. The successful electrodeposition was confirmed by the enhanced current response on the cyclic voltammograms. The XRD, HR-SEM/EDX, TEM, FTIR, and BET characterization confirmed the successful synthesis of MnO2 nanoparticles, RGO nanosheets, and MnO2@RGO nanocomposite. The electrochemical studies results revealed that MnO2@RGO@GCE nanocomposite considerably improved the current response on the detection of Zn(II), Cd(II) and Cu(II) ions in surface water. These remarkable improvements were due to the interaction between MnO2 nanomaterials and RGO nanosheets. Moreover, the modified sensor electrode portrayed high sensitivity, reproducibility, and stability on the simultaneous determination of Zn(II), Cd(II), and Cu(II) ions. The detection limits of (S/N = 3) ranged from 0.002–0.015 μg L−1 for the simultaneous detection of Zn(II), Cd(II), and Cu(II) ions. The results show that MnO2@RGO nanocomposite can be successfully used for the early detection of heavy metals with higher sensitivity in water sample analysis.

show abstract

Metal Oxide Nanomaterials for Electrochemical Detection of Heavy Metals in Water

Cited by 4 publications

References 36 publications

Electrochemical Detection of Heavy Metal Ions Based on Nanocomposite Materials

Electrochemical Detection of Heavy Metal Ions Based on Nanocomposite Materials

Nanocomposites for Electrochemical Sensors and Their Applications on the Detection of Trace Metals in Environmental Water Samples

MnO2@Reduced Graphene Oxide Nanocomposite-Based Electrochemical Sensor for the Simultaneous Determination of Trace Cd(II), Zn(II) and Cu(II) in Water Samples

Contact Info

Product

Resources

About