Graphene Quantum Dots and Cu(I) Liquid Crystal for Advanced Electrochemical Detection of Doxorubicine in Aqueous Solutions

Motoc, Sorina; Schinteie, Bianca; Pop, Aniela; Negrea, Sorina; Cretu, Carmen; Szerb, Elisabeta I.; Manea, Florica

doi:10.3390/nano11112788

Cited by 11 publications

(10 citation statements)

References 43 publications

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“…However, the mineralization current efficiency achieved with the 3-D Ti/SnO 2 was better in comparison with that reported for the BDD electrode used for the mineralization of other cytostatics [6] and of tetracycline, which belongs to similar class of anthracycline compounds [8]. Based on the electrochemical characterization results of Ti/SnO 2 and its testing in DOX degradation and mineralization corroborated bythe literature data [44,45], the degradation and mineralization process can be governed by electron transfer at the electrode surface-aqueous supporting electrolyte solution interface and/or by diffusion into the bulk solution of the hydroxyl radicals generated and adsorbed on the electrode surface in agreement with reactions (13)(14) [7,[46][47][48].…”

Section: Testing Ti/sno 2 In Dox Degradation and Mineralizationsupporting

confidence: 56%

Advanced Electrodegradation of Doxorubicin in Water Using a 3-D Ti/SnO2 Anode

Orha

Bandas

Lazău

et al. 2022

Water

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This study investigated the application of an advanced electrooxidation process with three-dimensional tin oxide deposited onto a titanium plate anode, named 3-D Ti/SnO2, for the degradation and mineralization of one of the most important emerging contaminants with cytostatic properties, doxorubicin (DOX). The anode was synthesized using a commercial Ti plate, with corrosion control in acidic medium, used as a substrate for SnO2 deposition by the spin-coating method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses revealed that porous SnO2 was obtained, and the rutile phase of TiO2 was identified as an intermediary substrate onto the Ti plate. The results of CV analysis allowed us to determine the optimal operating conditions for the electrooxidation process conducted under a constant potential regime, controlled by the electron transfer or the diffusion mechanisms, involving hydroxyl radicals. The determination of UV–VIS spectra, total organic carbon (TOC), and chemical oxygen demand (COD) allowed us to identify the degradation mechanism and pathway of DOX onto the 3-D Ti/SnO2 anode. The effective degradation and mineralization of DOX contained in water by the electrooxidation process with this new 3-D dimensionally stable anode (DSA) was demonstrated in this study.

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Section: Testing Ti/sno 2 In Dox Degradation and Mineralizationsupporting

confidence: 56%

Advanced Electrodegradation of Doxorubicin in Water Using a 3-D Ti/SnO2 Anode

Orha

Bandas

Lazău

et al. 2022

Water

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“…For doxorubicine (DOX) sensing in aqueous media, Ilies et al [124] procured two paste electrodes predicated on GQDs and CNT (GRQD/CNT), one of which was adapted with a homoleptic liquid crystalline Cu(I)-based coordination complex (Cu/GRQD/CNT), and both were electrochemically and morph structurally characterized in contrast to a basic CNT electrode. The optimum electroanalytical efficiency was demonstrated by GRQD/CNT using the DPV approach (DPV).…”

Section: Carbon Dots (Cds)/graphene Dots (Gds)mentioning

confidence: 99%

Recent trends in nanostructured carbon-based electrochemical sensors for the detection and remediation of persistent toxic substances in real-time analysis

Thakur

Kumar²

2023

Mater. Res. Express

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There are rising issues regarding the presence and discharge of emerging pollutants (EPs) in the ecosystem, including pharmaceutical waste, organic contaminants, heavy metals, pesticides, antibiotics and dyes. The human populace is typically exposed to a variety of EPs and toxins, such as those found in the soil, air, food supply, and drinkable water. Thus, creating new purification methods and effective pollution detection tools is a significant task. Several researchers in the sector have created unique analytical techniques including chromatography/mass and gaseous atomic absorption spectroscopy for the identification of contaminants to date. The aforementioned techniques have excellent sensitivity, but they are costly, time-consuming, costly, need sophisticated expertise to operate and are difficult to execute due to their enormous scale. Electrochemical sensors with resilience, specificity, sensibility, and real-time observations are thus been designed as a solution to the aforementioned shortcomings. The development of innovative systems to assures human and environmental protection has been aided by significant improvements in nanostructured carbon-based electrochemical sensor platforms. These platforms show enticing characteristics including excellent electrocatalytic operations, increased electrical conductance, and efficient surface region when compared to conventional methods. This paper intends to provide an analysis of low-cost nanostructured carbon-based electrochemical sensors from 2015 to 2022 that could detect and eradicate components of EPs from various origins. This review discusses the characteristics and uses of nanostructured carbon-based electrochemical sensors, which include carbon nanotubes, MXenes, carbon dots/graphene dots, graphene/graphene oxide, and other materials. These sensors are used to detect EPs such as heavy metal ions (Pb(II), Cd(II), Hg(II), etc.), pharmaceutical waste, dyes and pesticides. Additionally, processing and characterization techniques, including differential-pulsed voltammograms, SW voltammograms, ultraviolet-visible spectroscopy, fluorescence, electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and scanning electron microscopy (SEM) are discussed in detail to examine the prospects of these carbon-based electrochemical sensors and associated detection mechanisms. It is intended that this analysis would stimulate the development of new detection methods for protecting public health and restoring the environment.

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“…Graphene can be conducted as a kind of functional material for flexible and transparent devices due to its unique structures, excellent physical properties, and terrific mechanical and flexible characteristics, which result in lots of potential applications in the fields of biosensors [ 1 , 2 ], supercapacitors [ 3 ], liquid crystal devices [ 4 ], electronic devices [ 5 ], solar cell [ 6 , 7 ], catalysts [ 8 ], and even in energy storage and battery applications [ 9 ]. Owing to the sp 2 bonds and π bond with carbon atoms tightly and regularly arranged in a single layer of hexagonal honeycomb-like, two-dimensional structures [ 10 ], the electrons in graphene can move freely which result in an excellent electrical conductivity and very high mobility at room temperature [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

The Efficiency Study of Graphene Synthesis on Copper Substrate via Chemical Vapor Deposition Method with Methanol Precursor

et al. 2023

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Few-layer graphene was successfully synthesized on copper foil via chemical vapor deposition with methanol as a carbon source. This was confirmed by optical microscopy observation, Raman spectra measurement, I2D/IG ratio calculation, and 2D-FWHM value comparisons. Monolayer graphene was also found in similar standard procedures, but it required higher growth temperature and longer time periods. The cost-efficient growth conditions for few-layer graphene are thoroughly discussed via TEM observation and AFM measurement. In addition, it has been confirmed that the growth period can be shortened by increasing growth temperature. With the H2 gas flow rate fixed at 15 sccm, few-layer graphene was synthesized at the lower growth temperature of 700 °C in 30 min, and at 900 °C growth temperature in only 5 min. Successful growth was also achieved without adding hydrogen gas flow; this is probably because H2 can be induced from the decomposition of methanol. Through further defects study of few-layer graphene via TEM observation and AFM measurement, we tried to find possible ways for efficiency and quality management in graphene synthesis in industrial applications. Lastly, we investigated graphene formation after pre-treatment with different gas compositions, and found that gas selection is a crucial factor for a successful synthesis.

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Graphene Quantum Dots and Cu(I) Liquid Crystal for Advanced Electrochemical Detection of Doxorubicine in Aqueous Solutions

Cited by 11 publications

References 43 publications

Advanced Electrodegradation of Doxorubicin in Water Using a 3-D Ti/SnO2 Anode

Advanced Electrodegradation of Doxorubicin in Water Using a 3-D Ti/SnO2 Anode

Recent trends in nanostructured carbon-based electrochemical sensors for the detection and remediation of persistent toxic substances in real-time analysis

The Efficiency Study of Graphene Synthesis on Copper Substrate via Chemical Vapor Deposition Method with Methanol Precursor

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