Graphene Oxide-Polymer Nanocomposites Towards Sensing and Photocatalytic Applications

Achary, L. Satish K.; Barik, Bapun; Dash, Priyabrat

doi:10.1007/978-3-030-40513-7_27

Cited by 2 publications

(2 citation statements)

References 80 publications

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“…In some studies, e.g., as described in [64,65], lower concentrations of CH4 (20-40 ppm) were also analyzed but only for the purpose of detecting specific intestinal bacterial overgrowth, which may eventually influence the occurrence of irritable bowel syndrome; however, this approach was not the purpose of this paper as it targets the already established irritable bowel syndrome. A final comparative analysis of the sensing structures of graphene with P3HT, and, respectively, with F8T2, is presented in Figure 15, indicating the resistance-time evolution when measuring four different concentrations of CH4 (50,100,200, and 300 ppm). "On" marks the moment when starting the measurements with CH4 and synthetic air-tailored mixtures, till the stationary value of resistance is obtained, as indicated in Figure 14.…”

Section: Analysis Of Functionality As Gas Sensors For Methanementioning

confidence: 99%

“…[37][38][39][40][41][42]; dedicated sensors for environmental monitoring by the detection of pollutants in water, including heavy ions [43,44]; finalizing with food and drug analyses [45,46]. The second main application of the hybrid structures obtained from graphene and conducting polymers, occurring mainly in the last 10 years, is related to photovoltaic energy generation and energy storage applications/supercapacitors [47][48][49] as well as other photocatalytic applications [50].…”

Section: Introductionmentioning

confidence: 99%

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Chemiresistors Based on Hybrid Nanostructures Obtained from Graphene and Conducting Polymers with Potential Use in Breath Methane Detection Associated with Irritable Bowel Syndrome

Trandabat,

Ciobanu,

Schreiner

et al. 2024

IJMS

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This paper describes the process of producing chemiresistors based on hybrid nanostructures obtained from graphene and conducting polymers. The technology of graphene presumed the following: dispersion and support stabilization based on the chemical vapor deposition technique; transfer of the graphene to the substrate by spin-coating of polymethyl methacrylate; and thermal treatment and electrochemical delamination. For the process at T = 950 °C, a better settlement of the grains was noticed, with the formation of layers predominantly characterized by peaks and not by depressions. The technology for obtaining hybrid nanostructures from graphene and conducting polymers was drop-casting, with solutions of Poly(3-hexylthiophene (P3HT) and Poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-bithiophene] (F8T2). In the case of F8T2, compared to P3HT, a 10 times larger dimension of grain size and about 7 times larger distances between the peak clusters were noticed. To generate chemiresistors from graphene–polymer structures, an ink-jet printer was used, and the metallization was made with commercial copper ink for printed electronics, leading to a structure of a resistor with an active surface of about 1 cm2. Experimental calibration curves were plotted for both sensing structures, for a domain of CH4 of up to 1000 ppm concentration in air. A linearity of the curve for the low concentration of CH4 was noticed for the graphene structure with F8T2, presenting a sensitivity of about 6 times higher compared with the graphene structure with P3HT, which makes the sensing structure of graphene with F8T2 more feasible and reliable for the medical application of irritable bowel syndrome evaluation.

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Section: Analysis Of Functionality As Gas Sensors For Methanementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chemiresistors Based on Hybrid Nanostructures Obtained from Graphene and Conducting Polymers with Potential Use in Breath Methane Detection Associated with Irritable Bowel Syndrome

Trandabat,

Ciobanu,

Schreiner

et al. 2024

IJMS

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Preparation of Pie-Shaped CoMoO4 with High Capacitive and Photocatalytic Properties by a Solvothermal Method

Chen

Gang

et al. 2022

Coatings

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This paper reports a method for fabricating pie-shaped CoMoO4 nanomaterials. The morphologic characterization and phase analysis showed that the prepared material was CoMoO4 and presented a pie-shape. Pie-shaped CoMoO4 electrode materials possess high specific capacitance in three-electrode electrochemical measurement systems. When the current density is 1 A/g, the specific capacitance reaches 1902 F/g. In addition, it has good cycle stability. With 10,000 charge–discharge cycle experiments at a current density of 15 A/g, pie-shaped CoMoO4 has a specific capacity retention ratio of 99.5%. In addition, the CoMoO4//CNTs device can provide a maximum energy density of 55.6 Wh/kg (1 A/g) and a maximum power density of 10,900 W/kg (15 A/g), showing good electrochemical performance. The photocatalytic properties of pie-shaped CoMoO4 were also studied. The results show that the degradation rates of MO (methyl orange), MB (methyl blue), and CR (Congo red) can reach 97.8%, 98.8%, and 99.6% at 100 min, 40 min, and 65 min, respectively. The material has good photocatalytic performance. The excellent performance of pie-shaped CoMoO4 indicates that the electrode material has potential application scenarios in electrode materials and photocatalysis.

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Graphene Oxide-Polymer Nanocomposites Towards Sensing and Photocatalytic Applications

Cited by 2 publications

References 80 publications

Chemiresistors Based on Hybrid Nanostructures Obtained from Graphene and Conducting Polymers with Potential Use in Breath Methane Detection Associated with Irritable Bowel Syndrome

Chemiresistors Based on Hybrid Nanostructures Obtained from Graphene and Conducting Polymers with Potential Use in Breath Methane Detection Associated with Irritable Bowel Syndrome

Preparation of Pie-Shaped CoMoO4 with High Capacitive and Photocatalytic Properties by a Solvothermal Method

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