ZnO doped SnO2 nano flower decorated on graphene oxide/polypyrrole nanotubes for symmetric supercapacitor applications

Vandana, M.; Bhat, Vinay S.; Shetty, Apoorva; Devendrappa, H.; Toghan, Arafat; Hegde, Gurumurthy

doi:10.1016/j.est.2023.107953

Cited by 32 publications

(10 citation statements)

References 70 publications

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“…As previously documented in the literature, Hummer’s technique was used to produce GO [ 60 ]. The SnO 2 /ZnO (ZS) composite samples were produced in the following manner: 12 mg, 24 mg, and 36 mg of SnO 2 were weighed and added to 20 mL of deionized water, accordingly, while 1.4 g of CTAB was added to the aqueous SnO 2 -filled solution and agitated for 4 h. The agitated mixture was added to a mixed solution of 3 mmol of Zn(CH 3 COOH) 2 •2H 2 O and 10 mmol of NaOH and stirred for 10 min before being transferred to a 100 mL reactor and hydrothermalized at 85 °C for 6 h before being centrifuged and dried.…”

Section: Methodsmentioning

confidence: 99%

Synergistic Enhancement of Carrier Migration by SnO2/ZnO@GO Heterojunction for Rapid Degradation of RhB

Chen,

Li,

Wang

et al. 2024

Molecules

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Organic dyes in natural waters jeopardize human health. Whether semiconductor materials can effectively degrade dyes has become a challenge for scientific research. Based on this, this study rationally prepared different nanocomposites to remove organic dyes effectively. Pure SnO2 quantum dots, ZnO nanosheets, and SnO2/ZnO (ZS) binary nanocomposites are prepared using the hydrothermal method. Subsequently, SnO2/ZnO@GO (ZSG) ternary composites containing different amounts of GO, i.e., ZSG-5, ZSG-15, and ZSG-25, are synthesized by an ultrasonic water bath method, in which ZS was coupled with GO to form Z-type heterojunctions. The ZSG-15 ternary composites exhibited excellent photocatalytic activity for the degradation of rhodamine B by simulating sunlight. The test results show that the degradation rate of ZSG-15 is about 7.6 times higher than ZnO. The increase in photocatalytic activity is attributed to the synergistic effect of SnO2 and GO to improve the separation efficiency of photogenerated carriers in ZnO. Notably, the large specific surface area of GO increases the reactive sites. Compared with binary nanocomposites, ZSG-15 broadens the response range to light while further accelerating the electron transport rate and improving the photoelectric stability.

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Section: Methodsmentioning

confidence: 99%

Synergistic Enhancement of Carrier Migration by SnO2/ZnO@GO Heterojunction for Rapid Degradation of RhB

Chen,

Li,

Wang

et al. 2024

Molecules

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“…The findings suggest that the ZS/GP2 nanocomposite holds significant promise for advanced applications in solidstate symmetric supercapacitors, owing to its exceptional electrochemical properties. [98] PANI, GO, and their nanocomposites comprising h-BN (hexagonal boron nitride) and metal oxides (MO) were created for supercapacitor applications. Chemical oxidative polymerization enabled the formation of ternary nanocomposites, namely PANI/GO/TiO 2 , PANI/GO/MoS 2 , and PANI/GO/h-BN.…”

Section: Graphene Conducting Polymers and Metal Oxides Based Ternary ...mentioning

confidence: 99%

Challenges and Opportunities: Conducting Polymer‐Graphene based Nanocomposites of Metal Oxides and Metal Sulfides for Supercapacitors

Saeed,

Khalid,

Naeem Anjum

2024

ChemistrySelect

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Supercapacitor's demand for hybrid vehicles, portable electronic gadgets, and high‐power applications is increasing unexpectedly. However, supercapacitors′ inadequacies (i. e., inflated costs, poor energy density, erratic cycle life) need to be addressed by introducing novel composite materials and developing facile synthesis techniques which can give them high surface area and improved electrochemical stability. Moreover, hybrid supercapacitor electrodes based on ternary composites should be designed to broaden their application range and to deal with the challenges. The primary aim of this review is to explore the recent advances in the field of hybrid supercapacitors to address the challenges in this field. Specifically, we have focused on ternary nanocomposites comprising Graphene‐Conducting Polymers‐Metal Oxides (G‐CPs‐MOs) and Graphene‐Conducting Polymers‐Metal Sulfides (G‐CPs‐MSs). Our investigations centred around exploring various synthesis techniques, the surface morphology of composites and analysing the reported electrochemical evaluations of supercapacitor electrodes to highlight the potential prospects and challenges they present.

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“…Despite the many features of GO, features such as its high surface area and electrical conductivity led to GO being used as a suitable and practical material in many fields of electrochemistry, including electrochemical sensing, energy storage and conversion, etc. [52][53][54][55][56].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Nanosensor for the Simultaneous Determination of Anticancer Drugs Epirubicin and Topotecan Using UiO-66-NH2/GO Nanocomposite Modified Electrode

Tajik,

Shams,

Beitollahi

et al. 2024

Biosensors

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In this work, UiO-66-NH2/GO nanocomposite was prepared using a simple solvothermal technique, and its structure and morphology were characterized using field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD). An enhanced electrochemical sensor for the detection of epirubicin (EP) was proposed, which utilized a UiO-66-NH2/GO nanocomposite-modified screen-printed graphite electrode (UiO-66-NH2/GO/SPGE). The prepared UiO-66-NH2/GO nanocomposite improved the electrochemical performance of the SPGE towards the redox reaction of EP. Under optimized experimental conditions, this sensor demonstrates a remarkable limit of detection (LOD) of 0.003 µM and a linear dynamic range from 0.008 to 200.0 µM, providing a highly capable platform for sensing EP. Furthermore, the simultaneous electro-catalytic oxidation of EP and topotecan (TP) was investigated at the UiO-66-NH2/GO/SPGE surface utilizing differential pulse voltammetry (DPV). DPV measurements revealed the presence of two distinct oxidation peaks of EP and TP, with a peak potential separation of 200 mV. Finally, the UiO-66-NH2/GO/SPGE sensor was successfully utilized for the quantitative analysis of EP and TP in pharmaceutical injection, yielding highly satisfactory results.

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ZnO doped SnO2 nano flower decorated on graphene oxide/polypyrrole nanotubes for symmetric supercapacitor applications

Cited by 32 publications

References 70 publications

Synergistic Enhancement of Carrier Migration by SnO2/ZnO@GO Heterojunction for Rapid Degradation of RhB

Synergistic Enhancement of Carrier Migration by SnO2/ZnO@GO Heterojunction for Rapid Degradation of RhB

Challenges and Opportunities: Conducting Polymer‐Graphene based Nanocomposites of Metal Oxides and Metal Sulfides for Supercapacitors

Electrochemical Nanosensor for the Simultaneous Determination of Anticancer Drugs Epirubicin and Topotecan Using UiO-66-NH2/GO Nanocomposite Modified Electrode

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