Investigation of role of urea in morphologically controlled synthesis of calcium‐bismuth bimetallic nanoparticles from chicken egg shells and its catalytic and fuel additive applications

Khan, Shanza Rauf; Jamil, Saba; Zahid, Muhammad; Shahid, Muhammad

doi:10.1002/jccs.201900076

Cited by 12 publications

(5 citation statements)

References 84 publications

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“…The micrographs, obtained from SEM study, showed (Fig. 1a and 1b) that the surfaces of UES contained pores with well-developed cavities and exhibited crystallinity and irregular angular pattern of fractures (Khan et al, 2019).…”

Section: Sem Studymentioning

confidence: 99%

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Valorisation of Waste Eggshell for Degradation of Selected Cationic Dyes From the Aqueous Environment

MUKHERJEE¹,

MUKHERJEE²,

BETAL³

2022

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Egg production has been remarkably increased worldwide in the last thirty years, thereby itgenerates huge waste eggshell. Chicken waste eggshell is approximately 11% of the total eggweight and it contains calcium carbonate (CaCO3) and calcium oxide (CaO). In this work, wasteeggshell was modified by urea (UES) and used as a catalyst to degrade cationic dyes. Brilliant greenand Malachite green were efficiently degraded via optimization of initial concentration of dyes, pHof media, time of contact and amount of catalyst. The reaction followed first order kinetics. The LCMSstudy was performed to understand the catalytic degradation pathway of malachite green.Hence, the present study might be helpful for removal of selected organic dyes via valorisation ofwaste eggshell.

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Section: Sem Studymentioning

confidence: 99%

“…The diffractogram (Fig. 2) indicated that UES possessed calcite structures with a similarity to calcium carbonate mineral (2 = 29.305 nm) (Khan et al 2019) and particle size was found in the range 40-50 nm (D = 44.822 nm) from the Scherrer formula.…”

Section: Xrd Studymentioning

confidence: 99%

Valorisation of Waste Eggshell for Degradation of Selected Cationic Dyes From the Aqueous Environment

MUKHERJEE¹,

MUKHERJEE²,

BETAL³

2022

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“…Among these additives, surfactants are the most used ones. They lower the surface tension at the interface between nanoparticles and prevent particle agglomeration by lowering the surface energy of the nanoparticle, which, in turn, also defines the particle size and morphology. − Alongside surfactants, urea is one of the highly sought-after agents in nanomaterial synthesis over a conductive fabric substrate, owing to its high water solubility, low hydrolysis temperature, controllable hydrolysis rate, and ability to form hydrogen bonds with solvents. − …”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Synthesis of Cobalt Molybdenum Hydroxide 3d Nanostructures on Carbon Fabric Coupled with Cherry Flower Waste-Derived Activated Carbon for Quasi-Solid-State Flexible Asymmetric Supercapacitors

Bhattarai

Chhetri

Saud

et al. 2021

ACS Appl. Nano Mater.

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We report a greener, effortless, and scalable approach involving the synthesis of a self-grown nanomaterial on a flexible conductive substrate along with the synthesis of activated carbon derived from biomass waste. Contrary to the popular idea of using a variety of additives for the synthesis of nanomaterials, such as surface-activating agents, 3d metal-oxide nanoplates were synthesized on a highly hydrophobic carbon cloth substrate using no foreign elements except the metal precursors. The activated carbon was derived from biomass waste in that it was synthesized using withered cherry flower petals. The two as-synthesized materials were combined to fabricate an asymmetric supercapacitor, the design of which is presented as a greener and sustainable way to obtain an alternative energy storage unit. The three-dimensional nanoplate architecture from the positive electrode combined with the densely populated meso-/microporous structures of the negative electrode delivered an energy density of 106.3 μWh cm–2 for a power density of 657 μW cm–2, which is maintained at 57.5 μWh cm–2 even at a high power density of 5283.4 μW cm–2. Furthermore, a highly stable rate performance was achieved with high capacity retention even after charging–discharging for over 6000 cycles. The fabricated device exhibits highly satisfactory results in practice and hence presents itself as a highly capable candidate for a green energy solution.

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“…[ 1–5 ] Particularly, organic compounds such as phenol and halogenated phenols are very hazardous and even carcinogenic. [ 6,7 ] In order to safeguard human health, it is urgently required to remove these substances from the atmosphere before they further extend their unbearable problems.…”

Section: Introductionmentioning

confidence: 99%

Visible light‐excited surface plasmon resonance charge transfer significantly improves the photocatalytic activities of ZnO semiconductor for pollutants degradation

Yasmeen

Zada

Ali

et al. 2020

J Chinese Chemical Soc

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To effectively address environmental pollution, we synthesized Au-loaded ZnO nanocomposites and applied for the photocatalytic degradation of 2-chlorophenol (2-CP) under visible light irradiation. The as-prepared nanophotocatalysts delivered much improved photocatalytic degradation activities as compared to the bare ZnO nanoparticles and 32% of the pollutant was degraded with 2AuZnO in 1 hr. These improved photoactivities are attributed to the extended visible light absorption due to the surface plasmon resonance property of the loaded Au nanoparticles. Moreover, Au nanoparticles played important role in charge separation by inducting excited electrons to the conduction band of ZnO photocatalyst and surface catalysis as confirmed from photoluminescence spectra and amount of the generated hydroxyl radicals. The trapping experiments confirmed that positive holes were the major degrading species during the photocatalytic degradation of 2-CP. This work provides a feasible way to improve the photocatalysis by introducing a proper amount of noble metals over the surface of semiconductor photocatalysts.

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Investigation of role of urea in morphologically controlled synthesis of calcium‐bismuth bimetallic nanoparticles from chicken egg shells and its catalytic and fuel additive applications

Cited by 12 publications

References 84 publications

Valorisation of Waste Eggshell for Degradation of Selected Cationic Dyes From the Aqueous Environment

Valorisation of Waste Eggshell for Degradation of Selected Cationic Dyes From the Aqueous Environment

Eco-Friendly Synthesis of Cobalt Molybdenum Hydroxide 3d Nanostructures on Carbon Fabric Coupled with Cherry Flower Waste-Derived Activated Carbon for Quasi-Solid-State Flexible Asymmetric Supercapacitors

Visible light‐excited surface plasmon resonance charge transfer significantly improves the photocatalytic activities of ZnO semiconductor for pollutants degradation

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