Combustion synthesis and characterization of NiO nanoparticles

Ramasami, Alamelu K.; Reddy, M. V.; Balakrishna, R. Geetha

doi:10.1016/j.mssp.2015.06.017

Cited by 128 publications

(29 citation statements)

References 76 publications

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“…The NaOH-modified TiOF2 has a raised adsorption plateau from 400 to 600 nm, which indicates stronger visible light absorption than that of TiOF2 (Figure 4a). Band gap estimation can be seen in Figure 4b showing that the band gap of NaOH-modified TiOF2 is 2.62 eV, which is lower than that of TiOF2 (2.80 eV) and lower than anatase TiO2 (3.2 eV) [1][2][3][4], NiO (4.0 eV) [6], and other oxides, indicating easier excitation by visible light. This can be explained in that NaOH treatment causes certain facet exposure and network morphologies of TiOF2, changing its light absorption properties.…”

Section: Phase Structures and Morphologymentioning

confidence: 96%

“…Thus, studies on changing morphology [1][2][3], modification [1,4,5], and other methods were conducted to decrease its band gap or inhibit its electron-hole recombination. The discovery of non-titanium semiconductor photocatalysts with a narrow intrinsic energy band gap, efficiently driven by visible light, may also attract much attention [5][6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of NaOH-Modified TiOF2 and Its Enhanced Visible Light Photocatalytic Performance on RhB

2017

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NaOH-modified TiOF 2 was successfully prepared using a modified low-temperature hydrothermal method. Scanning electron microscopy shows that NaOH-modified TiOF 2 displayed a complex network shape with network units of about 100 nm. The structures of NaOH-modified TiOF 2 have not been reported elsewhere. The network shape permits the NaOH-modified TiOF 2 a S BET of 36 m 2 ·g −1 and a pore diameter around 49 nm. X-ray diffraction characterization shows that TiOF 2 and NaOH-modified TiOF 2 are crystallized with a pure changed cubic phase which accords with the SEM results. Fourier transform infrared spectroscopy characterization shows that NaOH-modified TiOF 2 has more O-H groups to supply more lone electron pairs to transfer from O of O-H to Ti and O of TiOF 2 . UV-vis diffuse reflectance spectroscopy (DRS) shows that the NaOH-modified TiOF 2 sample has an adsorption plateau rising from 400 to 600 nm in comparison with TiOF 2 , and its band gap is 2.62 eV, lower than that of TiOF 2 . Due to the lower band gap, more O-H groups adsorption, network morphologies with larger surface area, and sensitization progress, the NaOH-modified TiOF 2 exhibited much higher photocatalytic activity for Rhodamine B (RhB) degradation. In addition, considering the sensitization progress, O-H groups on TiOF 2 not only accelerated the degradation rate of RhB, but also changed its degradation path. As a result, the NaOH-modified TiOF 2 exhibited much higher photocatalytic activity for RhB degradation than the TiOF 2 in references under visible light. This finding provides a new idea to enhance the photocatalytic performance by NaOH modification of the surface of TiOF 2 .

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Section: Phase Structures and Morphologymentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Synthesis of NaOH-Modified TiOF2 and Its Enhanced Visible Light Photocatalytic Performance on RhB

2017

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“…The visible emissions of Fig. 7 centered at 492.0, 509.2, and 534.2 nm are generally attributed to defects-related deep level emissions such as oxygen vacancies and Ni interstitials [48][49][50].…”

Section: Vibrational and Optical Propertiesmentioning

confidence: 99%

Single phase Bunsenite NiO nanoparticles green synthesis by Agathosma betulina natural extract

Thema

Manikandan

Gurib-Fakim

et al. 2016

Journal of Alloys and Compounds

239

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“…The slurry was prepared in the above ratio using N-methyl-2-pyrrolidone (NMP) as a solvent and it was coated onto an etched copper foil (thickness$10 mm) by doctor blade technique [33]. The coated copper foil was dried in an air oven at 80 C for 12 h to evaporate NMP.…”

Section: Materials Synthesismentioning

confidence: 99%

Anodic electrochemical performances of MgCo 2 O 4 synthesized by oxalate decomposition method and electrospinning technique for Li-ion battery application

Darbar

Reddy

Sundarrajan

et al. 2016

Materials Research Bulletin

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Combustion synthesis and characterization of NiO nanoparticles

Cited by 128 publications

References 76 publications

Synthesis of NaOH-Modified TiOF2 and Its Enhanced Visible Light Photocatalytic Performance on RhB

Synthesis of NaOH-Modified TiOF2 and Its Enhanced Visible Light Photocatalytic Performance on RhB

Single phase Bunsenite NiO nanoparticles green synthesis by Agathosma betulina natural extract

Anodic electrochemical performances of MgCo 2 O 4 synthesized by oxalate decomposition method and electrospinning technique for Li-ion battery application

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