NiO bio-composite materials: Photocatalytic, electrochemical and supercapacitor applications

Avinash, B.; Ravikumar, C.R.; Kumar, Manjeet; Santosh, M.S.; Pratapkumar, C.; Nagaswarupa, H.P.; Murthy, H. C. Ananda; Deshmukh, V.V.; Bhatt, Aarti S.; Jahagirdar, A.A.; Alam, Mir Waqas

doi:10.1016/j.apsadv.2020.100049

Cited by 30 publications

(15 citation statements)

References 38 publications

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“…The NiO is an exceptional transition metal oxide known for its insulation nature (i.e. low conductivity values at room temperature) and is widely used in the fields of the electrochromic materials, supercapacitors, gas sensors and battery manufacturing 19 . This p-type semiconductor material also exhibits the bandgap value of 3.51 eV making these materials quite suitable for catalytic applications 20 .…”

Section: Introductionmentioning

confidence: 99%

“…This p-type semiconductor material also exhibits the bandgap value of 3.51 eV making these materials quite suitable for catalytic applications 20 . The NiO NPs are modified in numerous ways to achieve better results such as formation of nanocomposites 19 , 20 , surface modifications 21 , and doping process 22 . All these processes are designed in such a way that the electrical, optical, or structural characteristics of the NiO NPs are improved for the specific applications.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Mo doping in NiO nanoparticles for structural modification and its efficiency for antioxidant, antibacterial applications

Alam

BaQais

Mir

et al. 2023

Sci Rep

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Novel molybdenum (Mo)-doped nickel oxide (NiO) Nanoparticles (NPs) were synthesized by using a simple sonochemical methodology and the synthesized NPs were investigated for antioxidant, and antibacterial applications. The X-ray diffraction (XRD) analysis revealed that the crystal systems of rhombohedral (21.34 nm) and monoclinic (17.76 nm) were observed for pure NiO and Mo-doped NiO NPs respectively. The scanning electron microscopy (SEM) results show that the pure NiO NPs possess irregular spherical shape with an average particle size of 93.89 nm while the Mo-doped NiO NPs exhibit spherical morphology with an average particle size of 85.48 nm. The ultraviolet–visible (UV–Vis) spectrum further indicated that the pure and Mo-doped NiO NPs exhibited strong absorption band at the wavelengths of 365 and 349 nm, respectively. The free radical scavenging activity of NiO and Mo-doped NiO NPs was also investigated by utilizing several biochemical assays. The Mo-doped NiO NPs showed better antioxidant activity (84.2%) towards ABTS. + at 200 µg/mL in comparison to their pure counterpart which confirmed that not only antioxidant potency of the doped NPs was better than pure NPs but this efficacy was also concentration dependant as well. The NiO and Mo-doped NiO NPs were further evaluated for their antibacterial activity against gram-positive (Staphylococcus aureus and Bacillus subtilis) and gram-negative (Pseudomonas aeruginosa and Escherichia coli) bacterial strains. The Mo-doped NiO NPs displayed better antibacterial activity (25 mm) against E. coli in comparison to the pure NPs. The synthesized NPs exhibited excellent aptitude for multi-dimensional applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Mo doping in NiO nanoparticles for structural modification and its efficiency for antioxidant, antibacterial applications

Alam

BaQais

Mir

et al. 2023

Sci Rep

Self Cite

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“…Apart from the above mentioned carbonaceous material synthesis based studies here the composite structure is obtained by the modification of the NiO mas a metal oxide with the biomolecules. Resulted material improved the anodic and cathodic peak potentials of the NiO and provided longer stability and charge-discharge capacity [62]. He et al [63] reported an interesting study on the effect of the mixture usage as raw biomass material.…”

Section: Biomass Based Materials In Supercapacitorsmentioning

confidence: 98%

Biomass Based Materials in Electrochemical Supercapacitor Applications

Aslan¹,

Altuntaş²

2022

Supercapacitors for the Next Generation

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Biomass is the general term for organic substances derived from living organisms (plants and animals). Since, biomass is a renewable, sustainable, innovative, low cost and carbon-neutral energy source, the applications of nano-micro particles produced from biomass in electrochemical applications have emerged. A large number of carbon-based materials, such as featured activated carbon, carbon nanotube, C-dots, biochar, hybrid carbon-metal/metal oxide … etc. can be produced from divergent types of biomass. With the growing energy need in the world, supercapacitors have also developed considerably besides the energy generation and storage methods. The supercapacitor is an energy storage system that can work reversibly to provide high energy in a short time. In these systems, electrode structure and surface properties are crucial for energy capacity enhancement. In this sense, electrode modifications with the above-mentioned biomass-based nano-micro structures are widely used in supercapacitor applications.

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“…[12][13][14] Recently, the researchers focused on semiconductor metal oxide nanoparticles due to minimized particle size, high surface area, different oxidation states, unique magnetic, electronic and optical properties of MnO 2 , NiO and Co 3 O 4 , etc in water treatment, drug delivery, sensors, supercapacitor and electrochemical applications. [15][16][17] The efficiency of semiconductor materials could be enhanced using semiconductor dopants such as Ni 2 + , Co 3 + ions etc. Spinel metal oxides such as MnCo 2 O 4 , NiMnO 3 /NiMn 2 O 4 , porous NiCo 2 O 4 have been reported as efficient catalysts for environmental challenges.…”

Section: Introductionmentioning

confidence: 99%

Surfactant‐Enhanced Nano Spinel Oxide for Applications in Catalysis, Dye Degradation and Antibacterial Activity

Nivetha

Prabha

2022

ChemistrySelect

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Novel surfactant supported MnÀ CoÀ Ni oxide was effectively synthesized by simple and economic co-precipitation method to investigate the efficiency of catalytic reduction of 4-nitrophenol, degradation of methylene blue and antibacterial properties. The optical, structural and chemical compositions were cautiously analyzed by X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), X-ray photoelectron microscopy (XPS), ultraviolet-visible (UV-Vis), Fourier transform infrared (FT-IR), Brunauer-Emmett-Teller (BET) and dynamic light scattering (DLS) analyses. XRD analysis showed cubic structure with average crystallite size of 19-21 nm. FESEM images confirmed the combination of spherical, needle, plate and rod like shapes. Accordingly, a high specific surface area of 55.66 m 2 g À 1 was achieved by urea/MnÀ CoÀ Ni oxide. Band gap of ternary metal oxide was found in the range of 3.4-3.6 eV. The XPS analysis confirmed the presence of manganese, cobalt and nickel as major parts with a 2p core level region. The MÀ O bond formation was confirmed by the peak appeared in the range of 500-600 cm À 1 . The negative charge of ternary metal oxide was confirmed by negative zeta potential value. The reduction of 4-nitrophenol was carried out by MnÀ CoÀ Ni oxide with the efficiency of > 99 % and the degradation efficiency against methylene blue was studied. The synthesized catalyst was potent against S. aureus at higher concentration.

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NiO bio-composite materials: Photocatalytic, electrochemical and supercapacitor applications

Cited by 30 publications

References 38 publications

Effect of Mo doping in NiO nanoparticles for structural modification and its efficiency for antioxidant, antibacterial applications

Effect of Mo doping in NiO nanoparticles for structural modification and its efficiency for antioxidant, antibacterial applications

Biomass Based Materials in Electrochemical Supercapacitor Applications

Surfactant‐Enhanced Nano Spinel Oxide for Applications in Catalysis, Dye Degradation and Antibacterial Activity

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