Electrochemical performance of a three-layer electrode based on Bi nanoparticles, multi-walled carbon nanotube composites for simultaneous Hg(II) and Cu(II) detection

Bao, Qiwen; Li, Gang; Yang, Zhengchun; Pan, Peng; Liu, Jun; Chang, Jiayuan; Wei, Jun; Ling, Lin

doi:10.1016/j.cclet.2020.06.021

Cited by 39 publications

(11 citation statements)

References 32 publications

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“…Three (or more)-component strategies are also reported. For instance, in [ 151 ] PANI is functionalized with bismuth, and the resulting two-component functional probe is used to functionalize graphene oxide sheets.…”

Section: Discussionmentioning

confidence: 99%

“…Covalent functionalization with thiophenol brings the LOD down to 0.6 ppb (range from 1 to 18 ppb) [ 150 ]. The lowest reported LOD is 2 ppt (range 2 ppt to 1000 ppm) [ 151 ]. It was reached (with differential pulse voltammetry) by functionalizing a 3D structure made of MWCNTs randomly arranged around graphene oxide sheets with bismuth-doped polyaniline chains (PANI).…”

Section: Cnt-based Sensors With Different Analytes In Watermentioning

confidence: 99%

See 1 more Smart Citation

Electrical and Electrochemical Sensors Based on Carbon Nanotubes for the Monitoring of Chemicals in Water—A Review

Cho

Azzouzi

Zucchi

et al. 2021

Sensors

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Carbon nanotubes (CNTs) combine high electrical conductivity with high surface area and chemical stability, which makes them very promising for chemical sensing. While water quality monitoring has particularly strong societal and environmental impacts, a lot of critical sensing needs remain unmet by commercial technologies. In the present review, we show across 20 water monitoring analytes and 90 references that carbon nanotube-based electrochemical sensors, chemistors and field-effect transistors (chemFET) can meet these needs. A set of 126 additional references provide context and supporting information. After introducing water quality monitoring challenges, the general operation and fabrication principles of CNT water quality sensors are summarized. They are sorted by target analytes (pH, micronutrients and metal ions, nitrogen, hardness, dissolved oxygen, disinfectants, sulfur and miscellaneous) and compared in terms of performances (limit of detection, sensitivity and detection range) and functionalization strategies. For each analyte, the references with best performances are discussed. Overall, the most frequently investigated analytes are H+ (pH) and lead (with 18% of references each), then cadmium (14%) and nitrite (11%). Micronutrients and toxic metals cover 40% of all references. Electrochemical sensors (73%) have been more investigated than chemistors (14%) or FETs (12%). Limits of detection in the ppt range have been reached, for instance Cu(II) detection with a liquid-gated chemFET using SWCNT functionalized with peptide-enhanced polyaniline or Pb(II) detection with stripping voltammetry using MWCNT functionalized with ionic liquid-dithizone based bucky-gel. The large majority of reports address functionalized CNTs (82%) instead of pristine or carboxyl-functionalized CNTs. For analytes where comparison is possible, FET-based and electrochemical transduction yield better performances than chemistors (Cu(II), Hg(II), Ca(II), H2O2); non-functionalized CNTs may yield better performances than functionalized ones (Zn(II), pH and chlorine).

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Section: Discussionmentioning

confidence: 99%

Section: Cnt-based Sensors With Different Analytes In Watermentioning

confidence: 99%

Electrical and Electrochemical Sensors Based on Carbon Nanotubes for the Monitoring of Chemicals in Water—A Review

Cho

Azzouzi

Zucchi

et al. 2021

Sensors

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“…Beside CNT, various modified electrodes have received increasing attention for enhancing the selectivity and sensitivity of mercury electrochemical measurements; a summary of these studies is given in [ 3 , 15 ]. The most used modifiers include metal nanoparticles and films [ 16 , 17 ], polymers [ 18 , 19 ], ion-imprinted polymers [ 20 ], and organic chelators/ionophores [ 21 , 22 , 23 ], such as what is proposed here. Several studies included a combination of these modifiers with carbon nanotubes [ 9 , 24 , 25 , 26 ]; however, in the case of chelators/ionophores, these nanocomposites were mostly used in potentiometric and ion-selective electrodes (ISE) [ 13 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Novel Amperometric Mercury-Selective Sensor Based on Organic Chelator Ionophore

et al. 2023

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A novel amperometric sensor for the direct determination of toxic mercury ions, Hg2+, based on the organic chelator ionophore N, N di (2-hydroxy-5-[(4-nitrophenyl)diazenyl]benzaldehyde) benzene-1,2-diamine (NDBD), and multiwalled carbon nanotubes (MWCNT) immobilized on a glassy carbon electrode surface was developed. The parameters influencing sensor performance including the ionophore concentration, the applied potential, and electrolyte pH were optimized. The sensor response to Hg2+ was linear between 1–25 µM with a limit of detection of 60 nM. Interferences from other heavy metal ions were evaluated and the sensor showed excellent selectivity towards Hg2+. The method was successfully applied to the determination of mercury ions in milk and water samples.

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“…Mercury-based materials are widely used in daily life and industrial production, such as thermometers, batteries, and the mining industry. , However, mercury(II) ions released from them will pollute the water and soil, which can adsorb on the food chain and ultimately cause serious harm to human health. A large number of studies have shown that long-term intake of mercury-containing food will damage the kidney, nervous, and heart system, leading to serious diseases such as Alzheimer’s disease and Parkinson’s disease. − In the past decade, researchers have been aware of their harm and many analytical methods have been developed to detect mercury ions, such as atomic emission spectroscopy, inductively coupled plasma mass spectroscopy, surface-enhanced Raman scattering, electrochemical sensors, , and fluorescence sensors . Up to now, much progress has been made, but some issues hinder their further development in practical application, such as complex operation, expensive equipment, and time-consuming detection. , Therefore, it is very imperative to develop new methods for online detection of Hg 2+ with low concentration.…”

Section: Introductionmentioning

confidence: 99%

“…A large number of studies have shown that long-term intake of mercury-containing food will damage the kidney, nervous, and heart system, leading to serious diseases such as Alzheimer's disease and Parkinson's disease. 3−5 In the past decade, researchers have been aware of their harm and many analytical methods have been developed to detect mercury ions, such as atomic emission spectroscopy, 6 inductively coupled plasma mass spectroscopy, 7 surface-enhanced Raman scattering, 8 electrochemical sensors, 9,10 and fluorescence sensors. 11 Up to now, much progress has been made, but some issues hinder their further development in practical application, such as complex operation, expensive equipment, and time-consuming detection.…”

Section: Introductionmentioning

confidence: 99%

Adjustable Synthesis of Ni-Based Metal–Organic Framework Membranes and Their Field-Effect Transistor Sensors for Mercury Detection

Shen

Tan

Tang

et al. 2022

ACS Appl. Electron. Mater.

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Due to high toxicity of mercury ions (Hg2+), many efforts have been devoted to realize the detection of Hg2+ with low concentration, in which to establish the relationship among the structure, electricity property, and detection activity of sensing materials is of prime importance. In this work, a field-effect transistor (FET) sensor based on a conductive Ni3(HITP)2 membrane was employed to realize Hg2+ detection. Such a Ni3(HITP)2 membrane was synthesized in situ by a one-step hydrothermal method, and the influence of the volume ratio of ammonia to water on its structure and Hg2+ detection performance was systematically investigated. It is found that with increasing the volume ratio of ammonia to water, the Ni3(HITP)2 membrane composed of flake-shaped structure becomes denser, its thickness increases from 24.1 to 114.7 nm, and the mobility of the Ni3(HITP)2 FETs increases nearly 2 orders of magnitudes. For Hg2+ detection, the Ni3(HITP)2 membrane is modified with a glutaraldehyde (GA) cross-linking agent and DNA probes. The optimized Ni3(HITP)2-GA-DNA FET-based sensor can detect Hg2+ with high specificity in a concentration range of 10 pM–100 nM. The excellent detection performance is attributed to the close contact between the Ni3(HITP)2 membrane and Si/SiO2 substrate, large surface area of the membrane, and specific bonding of Hg2+ with DNA probes modified on the membrane surface. This work will have a great significance for the application of metal–organic frameworks in electronic devices and ion detection.

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Electrochemical performance of a three-layer electrode based on Bi nanoparticles, multi-walled carbon nanotube composites for simultaneous Hg(II) and Cu(II) detection

Cited by 39 publications

References 32 publications

Electrical and Electrochemical Sensors Based on Carbon Nanotubes for the Monitoring of Chemicals in Water—A Review

Electrical and Electrochemical Sensors Based on Carbon Nanotubes for the Monitoring of Chemicals in Water—A Review

Novel Amperometric Mercury-Selective Sensor Based on Organic Chelator Ionophore

Adjustable Synthesis of Ni-Based Metal–Organic Framework Membranes and Their Field-Effect Transistor Sensors for Mercury Detection

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