Surfactant-assisted low-temperature thermal decomposition route to spherical NiO nanoparticles

Bhattacharjee, Chira R.; Purkayastha, Debraj Dhar; Chetia, Jitu Ranjan

doi:10.1080/00958972.2011.640396

Cited by 10 publications

(3 citation statements)

References 33 publications

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“…As observed in the Figure b, hl-NiO x nanocrystals exhibit a characteristic absorption band at 1336 cm –1 which is assigned to the vibration mode of nitrate ions . An additional broad band at 3350–3400 cm –1 and a sharp band at 1630 cm –1 can be also associated with adsorbed water at the surface . Besides, the FT-IR spectrum of functionalized ho-NiO x nanocrystals exhibits two additional sharp peaks at 1400 and 1533 cm –1 typical of the −CH 2 and −NH 2 scissoring modes, respectively.…”

Section: Resultsmentioning

confidence: 70%

“…34 An additional broad band at 3350−3400 cm −1 and a sharp band at 1630 cm −1 can be also associated with adsorbed water at the surface. 35 Besides, the FT-IR spectrum of functionalized ho-NiO x nanocrystals exhibits two additional sharp peaks at 1400 and 1533 cm −1 typical of the −CH 2 and −NH 2 scissoring modes, respectively. The −CH groups are also confirmed by the peaks at 2850, 2920, and 3000 cm −1 assigned to antisymmetric and symmetric C−H stretching vibrations.…”

Section: ■ Results and Discussionmentioning

confidence: 97%

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Air-Stable n–i–p Planar Perovskite Solar Cells Using Nickel Oxide Nanocrystals as Sole Hole-Transporting Material

Tirado

Vásquez-Montoya

Roldán‐Carmona

et al. 2019

ACS Appl. Energy Mater.

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Development of low-cost solution processable inorganic hole-transporting materials (HTM) in n–i–p perovskite solar cells (PSCs) is still a challenge toward stable and cost-effective devices. Here, we report the synthesis, surface functionalization, and application of hydrophobic nickel oxide nanocrystals (ho-NiO x ) as HTM in planar n–i–p PSCs. The morphological and electrical properties of ho-NiO x layers were evaluated by atomic force microscopy (AFM) and conductivity measurements as well as ultraviolet photoelectron spectroscopy (UPS) and surface photovoltage (SPV) measurements. Compared to the state-of-the-art Spiro-OMeTAD, our results suggested a better energy band alignment between ho-NiO x and (FAPbI3)0.78(MAPbBr3)0.14(CsPbI3)0.08 perovskite. Noticeably, ho-NiO x -based devices exhibit a power conversion efficiency (PCE) of 12.71% and a stabilized power output (SPO) of 10.99%, the best performance reported so far employing NiO x as the sole top transport layer. Notably, a low photovoltage suggests that the V oc could be enhanced by reducing possible recombination paths at the perovskite/HTM interface. Moreover, unencapsulated PSC employing ho-NiO x exhibited an outstanding stability under high moisture levels (∼65% RH) retaining ∼90% of initial PCE after 1008 h of fabrication, paving the way toward scalable and solution processed fully inorganic blocking layer PSCs.

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Section: Resultsmentioning

confidence: 70%

Section: ■ Results and Discussionmentioning

confidence: 97%

Air-Stable n–i–p Planar Perovskite Solar Cells Using Nickel Oxide Nanocrystals as Sole Hole-Transporting Material

Tirado

Vásquez-Montoya

Roldán‐Carmona

et al. 2019

ACS Appl. Energy Mater.

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“…21 Despite great progress in understanding the separate impacts of ZnO NPs and P on crop development, there has been little investigation into their combined influence on maize performance. Different methods have been used for the synthesis of ZnO NPs, like the vapor-liquid-solid process, 22 vapor-phase growth, 23 electrophoretic deposition, 24 soft chemical method, 25 homogeneous precipitation, 26 and the sol-gel process. 27 Of these methodologies, the solution evaporation method (soft chemical method) bears some attractions; namely, nano-size, ambient temperature, moderate reaction condition, different morphologies of NPs under a different reaction temperature, good control, and cost effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Synergistic enhancement of maize crop yield and nutrient assimilation via zinc oxide nanoparticles and phosphorus fertilization

Ahmad,

Nepal

et al. 2024

J Sci Food Agric

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BACKGROUNDLow recovery of conventional fertilizers remains a significant bottleneck for maize production globally. Particularly, with phosphate fertilization, zinc is prone to precipitation in soil reducing recovery of both phosphorus and zinc by maize.RESULTSThe present study designed to investigate the synergistic effect of ZnO nanoparticles (ZnO NPs) and phosphorus (P) on maize crop growth, yield, and nutrient uptake under ZnO seed coating and foliar application in Randomized Completely Block Design (RCBD). However, plants were subjected to two ZnO NPs levels including 0.5 and 12 Kg ha‐1 amended with two P levels 45 and 90 Kg ha‐1. ZnO NPs especially in the form of foliar application with P dose 90 Kg ha‐1 significantly (p<0.05) improved maize crop growth, yield and nutrient uptake as compared with control. In comparison to the control group, plants grown in these conditions absorbed higher levels of zinc (Zn) and phosphorus (P). Zinc uptake rose to 16.34 g ha‐1, 137.88 g ha‐1, and 166.89 g ha‐1 in roots, grains, and stover, respectively. P uptake increased to 0.80 mg kg‐1, 10.066 mg kg‐1, and 12.17 mg kg‐1, in the same order. Additionally, seed emergence rate, plant height, and cob length have increased by up to 2%, 1177cm2, and 3.3 cm than control, respectively. Furthermore, Zn use efficiency was increased upto 38.55% in ZnO NPs foliar application.CONCLUSIONSZnO NPs 0.5 Kg ha‐1 in the form of foliar application with 90 Kg ha‐1 P dose depicted more pronounced increment in the studied parameters than ZnO NPs seed coating.This article is protected by copyright. All rights reserved.

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Synthesis and characterizations of NiO nanoparticles via solid-state thermal decomposition of nickel(II) Schiff base complexes

Khalaji

2014

Int Nano Lett

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To raise the need of new precursors in the synthesis of NiO nanoparticles, mononuclear nickel(II) Schiff base complexes, viz. Ni(salbn) and Ni(Me 2 -salpn), were employed as precursor in solid-state thermal decomposition. Structure, purity and morphology of these nanoparticles have been examined by Fourier transform infrared spectroscopy, X-ray powder diffraction, scanning electron microscopy and transmission electron microscopy (TEM). TEM analysis reveals that the synthesized nanoparticles have cubic particles with an average diameter of around 5-15 nm. This method is simple, less costly, and fast and safe for production of NiO nanoparticles in industrial applications.Keywords Nickel oxide Á Schiff base precursors Á PXRD Á SEM Á TEM BackgroundRecently, nickel(II) Schiff base complexes have been widely investigated not only for their interesting structures and properties [1,2], but also for their use as precursor for preparation of nickel oxide nanoparticles [3]. Then, considerable interest has been grown on the preparation and characterization of NiO nanoparticles via thermal decomposition of complexes for their unique applications and properties [4,5]. Among the transition metal oxides, nickel oxide has attracted much attention due to its properties and applications [6,7].

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Surfactant-assisted low-temperature thermal decomposition route to spherical NiO nanoparticles

Cited by 10 publications

References 33 publications

Air-Stable n–i–p Planar Perovskite Solar Cells Using Nickel Oxide Nanocrystals as Sole Hole-Transporting Material

Air-Stable n–i–p Planar Perovskite Solar Cells Using Nickel Oxide Nanocrystals as Sole Hole-Transporting Material

Synergistic enhancement of maize crop yield and nutrient assimilation via zinc oxide nanoparticles and phosphorus fertilization

Synthesis and characterizations of NiO nanoparticles via solid-state thermal decomposition of nickel(II) Schiff base complexes

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