One-Pot synthesis of CuO-Cu2O nanoscrubbers for high-performance pseudo-supercapacitors applications

Kumar, Rajendra; Sreevani, K.; Radhika, G.; Sethuraman, Vijay A.; Shanmugavalli, V.; Nagarani, S.; Balachandran, S.; Mohanraj, K.

doi:10.1016/j.mseb.2022.115755

Cited by 11 publications

(5 citation statements)

References 52 publications

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“…11 In the past few decades, with an increased focus on the characteristics, copper (II) oxide (CuO) has been investigated extensively. 12 CuO, a semiconducting material, possesses a narrow band gap in bulk and wide band gap as nanomaterials and is widely used in numerous applications, such as in photocatalytic 13,14 and catalytic processes, 15,16 capacitors, 17,18 sensors, 19 solar cells, 20 batteries, 21 and storage media. 22 Further, CuO appertains to the imperious group of environmental catalysts utilized for discarding a number of synthetic and organic pollutants.…”

Section: Introductionmentioning

confidence: 99%

Visible light‐active pure and lanthanum‐doped copper oxide nanostructures for photocatalytic degradation of methylene blue dye and hydrogen production

Rafique¹,

Khalid

Irshad

et al. 2023

Energy Science & Engineering

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Clean water and renewable energy sources are becoming increasingly important in the current era, as well as a future challenge, and one of the potential solutions is photocatalysis. In the current study, a simple one‐step hydrothermal technique is employed to fabricate the pure and La‐doped CuO (0%, 1%, 3%, 5%, and 7%) photocatalysts. The influence of varying La concentration on structure, morphology, and optical properties is determined by scanning electron microscope (SEM), X‐ray diffraction (XRD), ultraviolet (UV)–visible spectroscopy, and photoluminescence. SEM showed that synthesized nanostructures are irregularly spherical and transform into needle‐like nanostructures on increasing La concentration. XRD revealed the monoclinic phase with a crystallite size of 15–23 nm. The UV–visible spectrum exhibited a decrease in the band gap of La‐doped CuO needle‐like nanostructures from UV to visible light. The composition and purity of synthesized nanostructures are evaluated via the energy‐dispersive X‐ray spectrum which revealed that needle‐like nanostructures are pure without any impurity traces. The synthesized nanostructures were used as a photocatalyst against methylene blue dye to examine their photocatalytic activity. The synthesized CuO‐3La photocatalyst exhibited excellent photocatalytic performance of dye degradation and hydrogen production 95.3 μmol h−1 g−1 with more than 97% cyclic stability. Therefore, the synthesized La‐doped CuO nanostructures are potential candidates for photocatalytic water splitting and hydrogen evolution.

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Section: Introductionmentioning

confidence: 99%

Visible light‐active pure and lanthanum‐doped copper oxide nanostructures for photocatalytic degradation of methylene blue dye and hydrogen production

Rafique¹,

Khalid

Irshad

et al. 2023

Energy Science & Engineering

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“…Various transition metal oxides are reported as electrode materials for supercapacitor applications, − among which CuO nanoparticles (NPs) have gained extensive research interest as an electrode material due to their high specific capacitance in Faradaic reactions and electrical double-layer formation. , Pendashteh et al fabricated an electrode with CuO/graphene oxide and achieved a specific capacitance of 45 F g –1 at 0.1 A g –1 . In recent research on energy storage studies, Kumar et al synthesized CuO-Cu 2 O nanoscrubbers having a specific capacitance value of 780 F g –1 at 0.5 A g –1 for pseudosupercapacitor application. Asen and Shahrokhian reported that a graphene/polypyrrole/Cu 2 O–Cu(OH) 2 ternary nanocomposite shows a high specific capacitance of 997 F g –1 at 10 A g –1 .…”

Section: Introductionmentioning

confidence: 99%

“…28,29 Pendashteh et al 30 fabricated an electrode with CuO/graphene oxide and achieved a specific capacitance of 45 F g −1 at 0.1 A g −1 . In recent research on energy storage studies, Kumar et al 27 synthesized CuO-Cu 2 O nanoscrubbers having a specific capacitance value of 780 F g −1 at 0. pseudosupercapacitor application. Asen and Shahrokhian 31 reported that a graphene/polypyrrole/Cu 2 O−Cu(OH) 2 ternary nanocomposite shows a high specific capacitance of 997 F g −1 at 10 A g −1 .…”

Section: ■ Introductionmentioning

confidence: 99%

β-Cyclodextrin-Stabilized CuO/MXene Nanocomposite as an Electrode Material for High-Performance Supercapacitors

Rajeeve,

Yamuna,

Vinoba

et al. 2023

Langmuir

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“…Therefore, mostly hollow particles of binary systems are being reported as the chemistry of such fabrication routes is simpler. For example, CuO hollow nanoparticles have been reported for catalysis and sensing applications. − Oxides of Mn, Co, Fe, Ni, etc., have led to high-performing electrode materials for Li-ion batteries and supercapacitors. , Similarly, hollow structures of polymers have also been used in various chemical industries …”

Section: Introductionmentioning

confidence: 99%

“…6−9 Oxides of Mn, Co, Fe, Ni, etc., have led to high-performing electrode materials for Li-ion batteries and supercapacitors. 10,11 Similarly, hollow structures of polymers have also been used in various chemical industries. 12 To further add value to these types of particles, it is essential to stabilize more complex compositions and structures.…”

Section: Introductionmentioning

confidence: 99%

Hollow Nanostructures of Ternary Ce_1–xCu_xO₂ for Volatile Organic Compound Sensing

Mandal,

Priya,

Chowdhury

et al. 2023

ACS Appl. Nano Mater.

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An increasing number of traditional nanostructures are being replaced by self-assembled hierarchical nanostructures in terms of their electrochemical, optical, catalytic, and shielding properties. These morphologies exhibit high packing density, tunable porosity, and a large surface area. One of the most effective ways to stabilize hollow nanostructures is to modify the interfacial interactions and subsequent particle assembly that take place at the water-and-oil interface in inverse mini-emulsion. In this study, we present the formation of Ce 1−x Cu x O 2 (0< x < 1.0) hollow structures, which show much higher electrochemical response than either of the end members, viz., CeO 2 or CuO/Cu 2 O. It is established that by controlling the diffusion and reaction kinetics, the dimension of the hollow cavity can be easily tuned. The CeO 2 nanostructures are exposed to different VOC gases, at several temperatures, and various concentrations ranging from 1 to 25 ppm. The best performance is found for formaldehyde (HCHO) detection at an activation temperature of 200 °C. Copper doping helps mitigate the poor conductivity issues associated with CeO 2 . This further opens more avenues for the application of Ce-based oxides in electrochemical devices.

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One-Pot synthesis of CuO-Cu2O nanoscrubbers for high-performance pseudo-supercapacitors applications

Cited by 11 publications

References 52 publications

Visible light‐active pure and lanthanum‐doped copper oxide nanostructures for photocatalytic degradation of methylene blue dye and hydrogen production

Visible light‐active pure and lanthanum‐doped copper oxide nanostructures for photocatalytic degradation of methylene blue dye and hydrogen production

β-Cyclodextrin-Stabilized CuO/MXene Nanocomposite as an Electrode Material for High-Performance Supercapacitors

Hollow Nanostructures of Ternary Ce_1–xCu_xO₂ for Volatile Organic Compound Sensing

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One-Pot synthesis of CuO-Cu2O nanoscrubbers for high-performance pseudo-supercapacitors applications

Cited by 11 publications

References 52 publications

Visible light‐active pure and lanthanum‐doped copper oxide nanostructures for photocatalytic degradation of methylene blue dye and hydrogen production

Visible light‐active pure and lanthanum‐doped copper oxide nanostructures for photocatalytic degradation of methylene blue dye and hydrogen production

β-Cyclodextrin-Stabilized CuO/MXene Nanocomposite as an Electrode Material for High-Performance Supercapacitors

Hollow Nanostructures of Ternary Ce1–xCuxO2 for Volatile Organic Compound Sensing

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Hollow Nanostructures of Ternary Ce_1–xCu_xO₂ for Volatile Organic Compound Sensing