One-step facile synthesis of Nd2O3/ZnO nanostructures for an efficient selective 2,4-dinitrophenol sensor probe

Wahid, Abdul; Asiri, Abdullah M.; Rahman, Mohammed M.

doi:10.1016/j.apsusc.2019.05.107

Cited by 51 publications

(16 citation statements)

References 38 publications

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“…As binding agent, it was used the 5% nafion suspended in the ethanol, which was enhanced the binding strength between GCE and CdSe/ZnS QDs. Thus, the applied nafion was improved the binding strength in addition to increase the electron transport rate of the proposed electro-chemical sensor [72][73][74][75][76][77] . To test the proposed selectivity of chemical sensor, the number of environmental contaminants with the concentration of 0.1 µM and applied potential ranging from 0 to +1.5 V were investigated in phosphate buffer solution at neutral pH.…”

Section: Detection Of 3-cp By Electrochemical Approach the Proposed mentioning

confidence: 99%

Facile and efficient 3-chlorophenol sensor development based on photolumenescent core-shell CdSe/ZnS quantum dots

Rahman

Karim

Alam

et al. 2020

Sci Rep

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Quantum dots (QDs) are semiconducting inorganic nanoparticles, tiny molecules of 2-10 nm sizes to strength the quantum confinements of electrons. The QDs are good enough to emit light onto electrons for exciting and returning to the ground state. Here, CdSe/ZnS core/shell QDs have been prepared and applied for electrochemical sensor development in this approach. Flat glassy carbon electrode (GCE) was coated with CdSe/ZnS QDs as very thin uniform layer to result of the selective and efficient sensor of 3-CP (3-chlorophenol). The significant analytical parameters were calculated from the calibration plot such as sensitivity (3.6392 µA µM −1 cm −2) and detection limit (26.09 ± 1.30 pM) with CdSe/ZnS/ GCE sensor probe by electrochemical approach. The calibration curve was fitted with the regression coefficient r 2 = 0.9906 in the range of 0.1 nM ∼ 0.1 mM concentration, which denoted as linear dynamic range (LDR). Besides these, it was performed the reproducibility in short response time and successfully validated the fabricated sensor for 3-CP in the real environmental and extracted samples. It is introduced as a noble route to detect the environmental phenolic contaminants using CdSe/ZnS QDs modified sensor by electrochemical method for the safety of healthcare and environmental fields at broad scales. Semiconductor quantum dots (QDs), in particular those of cadmium chalcogenides (CdS, CdSe, CdTe), have received steadily growing attention due to their high potential for various applications, such as sensing 1,2 , biological labeling 3-12 , light-emitting devices (LED) 13-17 , lasers 18,19 , and solar cells 20-22. Recently, the number of interest has been developed in the area of electrochemical sensors and biosensors in which CdSe are employed for the determination of clinical markers 23 and food 24 and environmental pollutants 25,26. CdSe have been using as electrochemical signal tracers to exploit the oxidation potentials of the metal ions forming them. This can also be attributed to some of the characteristics of CdSe, such as a large surface area-to-volume ratio, good interfacial properties with high surface reaction activity, high electron-transfer efficiency, excellent biocompatibility, and feasibility for surface modification 27-30. Moreover, metallic QDs also constitute a feasible option for electrochemical multiplexed assays due to their different stripping peak potentials 31,32. This is particularly true for the development of efficient, reliable, rapid, and cost-affordable analytical procedures for the determination of anthropogenic and natural substances of either organic or mineral nature that have toxic, persistent, and bio-accumulative properties. Due to the prevalent pollution of ground and surface water by chloro-organic chemicals such as chlorophenol derivatives, the public concern has been growing over the several few decades. Because, the chlorophenols (including 3-CP) have high toxicity and able to produce mutagenic, estrogenic and carcinogenic effects in human beings 33-36 and even unsafe for t...

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Section: Detection Of 3-cp By Electrochemical Approach the Proposed mentioning

confidence: 99%

Facile and efficient 3-chlorophenol sensor development based on photolumenescent core-shell CdSe/ZnS quantum dots

Rahman

Karim

Alam

et al. 2020

Sci Rep

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“…38b Another less intense peak at BE 529.7 eV was associated with Nd-O bonding in the sample matrix. 39 The deconvolution of N 1s spectra, exhibited three peaks at BE 401.1 eV, 399.5 eV and 398.3 eV which were attributed to N]C, N-C and N-H respectively. 40 The Fe 2p 3 , Nd 3d 5 and Cl 2p level XPS spectrum were comprised of two characteristic peaks.…”

Section: Preparation and Characterization Of Catalystmentioning

confidence: 97%

Design, characterization and catalytic evaluation of halometallic ionic liquid incorporated Nd₂O₃nanoparticles ([smim][FeCl₄]⁻@Nd₂O₃) for the synthesis ofN-aryl indeno pyrrole derivatives

2020

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“…In this examination, the optical property of synthesized CdO/SnO 2 /V 2 O 5 MSs is measured which is an important characteristic features for evaluation the binding energy of each metal oxides [67][68][69]. Here, CdO/SnO 2 /V 2 O 5 MSs and their oxide form were investigated by the UV-visible spectroscopy.…”

Section: Optical Analyses Of Cdo/sno 2 /V 2 O 5 Mssmentioning

confidence: 99%

Selective detection of ascorbic acid with wet-chemically prepared CdO/SnO2/V2O5 micro-sheets by electrochemical approach

et al. 2020

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Generally, ascorbic acid (AA) is a potent reducing and antioxidant agent that regulates in fighting against bacterial infections as well as detoxifying reactions, which is functioned in the formation of collagen in fibrous tissue, teeth, bones, connective tissue, skin, and capillaries. Up to date, electrochemical enzymatic sensor are significantly used for enzymatic AA detection that exhibits an excellent selectivity, high reliability and handled under physiological conditions. However, considering some intrinsic disadvantages of using enzymes, such as high fabrication cost and poor stability, non-enzymatic AA sensors have attracted increasing research interest in recent years owing to their low cost, high stability, fast response, and low detection limit. Moreover, the development of nanotechnology has also offered new opportunities to develop the nanostructured sensor probes for enzyme-less AA sensing applications. With beneficial advantages, ternary-doped metal oxides have gathered an extensive effort in the development of cost-effective sensors with high stability, sensitivity and quick response for the determination of selective AA by enzyme-free detection. In this approach, the mixed metal oxides of CdO/SnO 2 /V 2 O 5 micro-sheets (MSs) were prepared by facile wet-chemical method in alkaline phase at low temperature. Later, it was subjected to detail characterize by using various methods such as XPS, FESEM, EDS, and XRD. The slurry of prepared MSs in ethanol was deposited initially onto the surface of glassy carbon electrode (GCE) to make a thin film with conducting nafion (5% suspension in ethanol) adhesive to result the working electrode of proposed AA sensor probe. The sensor sensitivity (21.3354 μA μM −1 cm −2) is calculated by using the slope (0.6742 μA μM −1) of the calibration curve by considering the active surface area of GCE (0.0316 cm 2) in the linear dynamic range (LDR; 0.1 nM to 0.01 mM). The limit of detection (LOD) (98.64 ± 4.98 pM) is obtained from the calibration curve. The proposed AA electrochemical sensor exhibits short response time, good reproducibility and successive outcome during the investigation of the real biological samples. The development of enzyme-free AA sensor by using CdO/ SnO 2 /V 2 O 5 MSs onto GCE is simple as well as reliable and practically able to detect the biological stuffs for the safety of human health in the field of biomedical and sensor technology.

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One-step facile synthesis of Nd2O3/ZnO nanostructures for an efficient selective 2,4-dinitrophenol sensor probe

Cited by 51 publications

References 38 publications

Facile and efficient 3-chlorophenol sensor development based on photolumenescent core-shell CdSe/ZnS quantum dots

Facile and efficient 3-chlorophenol sensor development based on photolumenescent core-shell CdSe/ZnS quantum dots

Design, characterization and catalytic evaluation of halometallic ionic liquid incorporated Nd₂O₃nanoparticles ([smim][FeCl₄]⁻@Nd₂O₃) for the synthesis ofN-aryl indeno pyrrole derivatives

Selective detection of ascorbic acid with wet-chemically prepared CdO/SnO2/V2O5 micro-sheets by electrochemical approach

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One-step facile synthesis of Nd2O3/ZnO nanostructures for an efficient selective 2,4-dinitrophenol sensor probe

Cited by 51 publications

References 38 publications

Facile and efficient 3-chlorophenol sensor development based on photolumenescent core-shell CdSe/ZnS quantum dots

Facile and efficient 3-chlorophenol sensor development based on photolumenescent core-shell CdSe/ZnS quantum dots

Design, characterization and catalytic evaluation of halometallic ionic liquid incorporated Nd2O3nanoparticles ([smim][FeCl4]−@Nd2O3) for the synthesis ofN-aryl indeno pyrrole derivatives

Selective detection of ascorbic acid with wet-chemically prepared CdO/SnO2/V2O5 micro-sheets by electrochemical approach

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Design, characterization and catalytic evaluation of halometallic ionic liquid incorporated Nd₂O₃nanoparticles ([smim][FeCl₄]⁻@Nd₂O₃) for the synthesis ofN-aryl indeno pyrrole derivatives