Waste remediation: Low-temperature synthesis of hybrid Cu(OH)2/CuO and CuO nanostructures from spent printed circuit boards and their dye degradation studies

Gautam, Pushpa; De, Arup Kumar; Rao, Mudila Dhanunjaya; Sinha, Indrajit; Behera, C.K.; Singh, K. K.

doi:10.1007/s11356-023-29005-7

Cited by 1 publication

(1 citation statement)

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“…45,46 Metal oxide and hydroxide nanoparticles typically exhibit vibration peaks in the fingerprint region of 500-1000 cm −1 because of the vibration between atoms. [47][48][49] The vibration bands at 599, 595, 518 and 476 cm −1 are characterized for the Cu-O bending. 35,50 The spectrum of the sample B displays intense absorption band at 3385 cm −1 that related to the O-H stretching in Cu(OH) 2 structure and another band at 1105 cm -1 that may be attributed to -OH bending of Cu-OH, 48 in agreement with the formation of Cu(OH) 2 .…”

Section: Structure and Composition Studies Cu-based Nanostructures-mentioning

confidence: 99%

Novel Hybrid Copper-Based Electrode for Non-Enzymatic Electrochemical Lactic Acid Sensing in Milk Samples

Ngamaroonchote,

Karn-orachai

2024

J. Electrochem. Soc.

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A novel developed non-enzymatic electrochemical sensor was designed for the detection of lactic acid (LA) in perishable products, with a focus on monitoring milk spoilage. The sensor utilizes a hybrid copper-based electrode consisting of cuprous oxide (Cu2O), copper oxide (CuO), and copper hydroxide (Cu(OH)2), which collectively contribute to enhanced performance through their synergistic effects. Cyclic voltammetric studies revealed distinct oxidation peaks associated with LA detection, highlighting the superior catalytic effect of the Cu2O/CuO/Cu(OH)2 electrode compared to CuO alone. Further optimization of the metal loading on the electrode surface led to improve LA sensing properties. The sensor exhibited a wide linear response range (0.25-7 mM), high sensitivity (817.66 μA·mM−1·cm−2), and a low limit of detection (0.25 mM). Selectivity tests indicated negligible interference from common dairy product constituents, while stability tests showed consistent performance over a 3 week storage period (100% stability). The practical usability of the sensor was demonstrated through the quantitative analysis of LA in pasteurized milk, with recovery values ranging from 99.7% to 106.9%, confirming the feasibility of the sensor for real sample analysis. The developed multiphase copper-based electrode presents a promising platform for the sensitive and reliable detection of LA within the dairy industry.

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Section: Structure and Composition Studies Cu-based Nanostructures-mentioning

confidence: 99%

Novel Hybrid Copper-Based Electrode for Non-Enzymatic Electrochemical Lactic Acid Sensing in Milk Samples

Ngamaroonchote,

Karn-orachai

2024

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

Waste remediation: Low-temperature synthesis of hybrid Cu(OH)2/CuO and CuO nanostructures from spent printed circuit boards and their dye degradation studies

Cited by 1 publication

References 85 publications

Novel Hybrid Copper-Based Electrode for Non-Enzymatic Electrochemical Lactic Acid Sensing in Milk Samples

Novel Hybrid Copper-Based Electrode for Non-Enzymatic Electrochemical Lactic Acid Sensing in Milk Samples

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