Synthesis and characterization of nanocomposite NiFe2O4@SalenSi and its application in efficient removal of Ni(II) from aqueous solution

Babadi, N.; Tavakkoli, Haman; Afshari, Mozhgan

doi:10.4314/bcse.v32i1.7

Cited by 7 publications

(2 citation statements)

References 30 publications

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“…The typical H-O-H stretch for absorbed or free water is observed at 3321.3 cm −1 and 2340.2 cm −1 . The water deformation peak is observed at 1433.4 cm −1 in doped nickel ferrite crystal lattice [45],while 1035.3 cm −1 wave number is assigned to trivalent iron atoms migrated in tetrahedral voids. The additional wave number at 600 cm −1 is assigned to doped cobalt oxide, while the band at 464.6 cm −1 is concerned with doped Mn 2+ -O 2− [46].…”

Section: Ft-ir Studymentioning

confidence: 97%

Nanocrystalline-modified nickel ferrite films: an effective sensor for industrial and environmental gas pollutant detection

Koli¹,

Kapadnis²,

Deshpande³

2019

J Nanostruct Chem

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The inverse spinel nanocrystalline pure and doped nickel ferrite particles were synthesized by co-precipitation method. The thick films of both pure and doped nickel ferrite nanoparticles were prepared by coating the material on glass substrate via screen printing method. The XRD was used to confirm cubic, crystalline nickel ferrites. The scanning electron microscopy confirms nanosized, cubic nanoparticles of nickel ferrite, and their morphology was investigated. The energy-dispersive spectroscopy was used to comprise elemental composition for pure and doped ferrites. Transmission electron microscopy was attributed for investigation of surface morphology, crystal structure identification of nickel ferrites. The FT-IR was used to find the vibrational frequencies, symmetric, asymmetric stretching and bending modes of metal oxide linkage. The thick films of nickel ferrite were employed for sensing phenomenon of gases such as LPG, NO 2 , CH 3-OH, C 2 H 5-OH, NH 3 and petrol vapours. The pure nickel ferrite showed excellent results for ammonia and nitrogen dioxide gases up to 90.42 and 86.42, respectively. Manganese-and cobalt-doped ferrites were excellent for ammonia and petrol vapours. Modified nickel ferrite effect of dopants cobalt and manganese was investigated. Pure and doped ferrites showed excellent response and recovery for ammonia, NO 2 , petrol vapours and LPG gases.

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Section: Ft-ir Studymentioning

confidence: 97%

Nanocrystalline-modified nickel ferrite films: an effective sensor for industrial and environmental gas pollutant detection

Koli¹,

Kapadnis²,

Deshpande³

2019

J Nanostruct Chem

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“…The wavenumber at 1486-1493 is observed as a water deformation peak. The peak observed at 2350-2400 is an H-O-H stretch for absorbed or free water [30].…”

Section: Ft-ir Analysismentioning

confidence: 99%

Modified Sn-doped LaCrO3 nanostructures: focus on their characterization and applications as ethanol sensor at a lower temperature

Shinde

Sawant

Kapadnis³

2019

J Nanostruct Chem

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The present work emphasizes the effect of the use of Sn, with different concentrations, over the structural properties and sensing applications of LaCrO 3 . In this work, LaCrO 3 nanostructures were modified with different concentration of Sn (0.2 M %, 0.4 M %, 0.6 M % and 0.8 M %).Different modified Sn-doped LaCrO 3 was synthesized by sol-gel method and followed by preparation of thick films via a conventional screen printing approach. The characterizations done by means of X-ray diffraction (XRD), energy-dispersive X-ray (EDX), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) revealed the confirmation of a Sn-doped LaCrO 3 crystal structure and its morphology, respectively. These oxides were formulated to identify various air pollutants such as CO 2 , ethanol, H 2 S, NH 3 , NO 2, and acetone. The Sn-doped LaCrO3 with 0.4 M % Sn displayed higher gas response to ethanol vapor at the range of 150-250 °C. The sensors additionally demonstrated proper recovery and acceptable stability. Graphic abstractThe graphical abstract demonstrates the in situ synthesis of Sn-doped LaCrO 3 by sol-gel method. Similarly, it shows its characterization and finally, the thick films of doped Sn demonstrate best selectivity for ethanol.Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creat iveco mmons .org/licen ses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Chicken Egg Shell Waste Derived Calcium Oxide Based Nanohybrid For Rapid Removal of Heavy Metal Ions from Water: Green Synthesis, Kinetics and Reusability

et al. 2023

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The carcinogenic metal ions chromium (Cr + 6 ) and lead (Pb + 2 ) are prominent water pollutants. To substantiate this, green synthesized SnO 2 nanoparticle (using S. mukorossi extract) was coupled with egg shell derived CaO nanocrystals. Crystalline nature of synthesized catalyst confirmed by PXRD and microscopic study revealed spherical SnO 2 decorated on the irregular surface of CaO. Synthesized nanohybrid followed adsorption and photocatalytic reduction (Cr + 6 to Cr + 3 ; Pb + 2 to Pb 0 ) (Cr + 6 : 94 %; Pb + 2 : 88 %) phenomenon. Synergism of CaO (51.9 m 2 g À 1 ;2.9 eV) and SnO 2 (13.3 m 2 g À 1 ; 3.15 eV) was resulted into plenty of surface area (91.9 m 2 g À 1 ), low band gap (2.4 eV), and semiconducting nature of nanohybrid. As compared to Pb + 2 removal of Cr + 6 was faster due to higher value of reduction potential [Cr + 6 /Cr + 3 (1.35 eV); Pb + 2 /Pb 0 (À 0.1262 eV)]. Photocatalyst proved to be effective upto 10 th cycle. SnO 2 @CaO nanohybrid might be considered a potential photocatalyst in industries with sustainable approach.

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Synthesis and characterization of nanocomposite NiFe2O4@SalenSi and its application in efficient removal of Ni(II) from aqueous solution

Cited by 7 publications

References 30 publications

Nanocrystalline-modified nickel ferrite films: an effective sensor for industrial and environmental gas pollutant detection

Nanocrystalline-modified nickel ferrite films: an effective sensor for industrial and environmental gas pollutant detection

Modified Sn-doped LaCrO3 nanostructures: focus on their characterization and applications as ethanol sensor at a lower temperature

Chicken Egg Shell Waste Derived Calcium Oxide Based Nanohybrid For Rapid Removal of Heavy Metal Ions from Water: Green Synthesis, Kinetics and Reusability

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