Linear and nonlinear optical studies of bare and copper doped TiO2 nanoparticles via sol gel technique

Rajamannan, B.; Mugundan, S.; Viruthagiri, G.; Praveen, P.; Shanmugam, N.

doi:10.1016/j.saa.2013.09.045

Cited by 34 publications

(16 citation statements)

References 16 publications

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“…It can be seen in the acquired spectrum that a sizeable absorption band is present between 400-1000 cm À1 that is ascribed to the vibration modes of Ti-O-Ti linkage in TiO 2 nanoparticles which signies the formation of TiO 2 . 59,60 The small absorption band around 1062 cm À1 in doped sample arises due to bonding of Ti-O-N. 60 Observed band between 3300-3600 cm À1 relates to stretching vibrations of hydroxyl group (O-H) and distinct band around 1632 cm À1 is attributed to the bending vibrations of hydroxyl ions (-OH). This vibration band is associated with the protons of physisorbed water in prepared samples.…”

Section: Resultsmentioning

confidence: 99%

Dye degradation performance, bactericidal behavior and molecular docking analysis of Cu-doped TiO₂ nanoparticles

et al. 2020

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Section: Resultsmentioning

confidence: 99%

Dye degradation performance, bactericidal behavior and molecular docking analysis of Cu-doped TiO₂ nanoparticles

et al. 2020

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“…Moreover, the wide absorption band from 500 to 1000 cm -1 corresponds to the vibration absorption of the Ti-O-Ti linkages in the TiO 2 molecules. The increase in metal concentrations could shift the Ti-O-Ti band to the lower wavenumbers and sharpening of the band and this is mainly because of the enhancement in crystallite size of the powders (Rajamannan et al 2014a). In summary, the presence of strong functional groups at the interface of TiO 2 photocatalyst was showed from FTIR results in pure and TiO 2 doped photocatalysts.…”

Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 84%

“…At the same time on a higher level of doping (6 and 9 mol%) in addition to UV band, visible bands are also predicted. These bands are positioned at the range of 400 to 500 nm for 6 and 9 mol% doping amounts of Cu, Fe, and Ni metals (Rajamannan et al 2014a(Rajamannan et al , 2014b. However, in order to further enhance the photocatalytic activity, good interaction of Cu, Fe, and Ni with TiO 2 is required which could be confirmed by the FESEM images.…”

Section: Field Emission Scanning Electron Microscopymentioning

confidence: 87%

Preparation and Characterization of Copper, Iron, and Nickel Doped Titanium Dioxide Photocatalysts for Decolorization of Methylene Blue

Qaderi¹,

Mamat²,

Jalil³

2021

JSM

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The visible-light response is a necessary condition for titanium dioxide (TiO2) photocatalyst to function as a visible light active photocatalyst. This condition can be solved by investigation of the bandgaps and the optimization of doping levels of multivalency metal-doped TiO2. In this study, pure and Cu, Fe, and Ni-doped TiO2 photocatalysts were prepared by the sol‐gel method. The photocatalysts were characterized using XRD, FTIR, FESEM, EDX, N2 physisorption, and UV‐Vis spectrophotometry techniques. The XRD patterns of all pure TiO2 and Cu/TiO2, Fe/TiO2, and Ni/TiO2samples showed the dominant structure of the anatase TiO2 phase. The presence of functional groups at the interface of TiO2 particles was showed by FTIR. The FESEM analysis showed that the particle size of the prepared samples was uniform with spherical morphology. EDX results showed that TiO2 has successfully incorporated Cu, Fe, and Ni metals onto its surface. The BET analysis showed that the specific surface area of the doped samples increased with the amount of doping. The optical properties of all samples were carried out using UV-DRS measurements and their obtained bandgap energies were in the range of 3.22 - 3.42 eV. The pure TiO2 displayed more than 98% and 97% decolorization rates for MB solution at the end of irradiation time of 5 h under UV and visible light, respectively. Among the doped samples, 3 mol% Ni/TiO2 and Cu/TiO2 demonstrated the highest photocatalytic activity (97.65%) under UV light and 6 mol% Ni/TiO2 under visible light for MB (96.86%) decolorization.

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“…Metode sol gel ini banyak digunakan dalam pembuatan keramik(2; 4; 6; 16; 55-66) dan material gelas (67)(68)(69). Dengan menggunakan metode sol gel ini akan memungkinkan membentuk ukuran partikel skala nano (70)(71)(72)(73)(74) sekaligus membentuk penampakan morfologi yang homogen (1; 75). Sol merupakan suatu suspensi koloid dimana fasa terdispersinya berupa zat padat dan pendispersinya berupa zat cair.…”

Section: Pendahuluanunclassified

Sol Gel : Principle and Technique (A Review)

Liza¹,

Yasin²,

Maidani³

et al. 2018

Preprint

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Metode sol gel merupakan salah satu metoda sintesis nanopartikel yang menerapkan 2 tahapan fasa penting yaitu sol dan gel. Tujuan review ini adalah untuk mengetahui prinsip dan teknik pada proses pembuatan sol gel. Prinsip metoda sintesis dengan teknik sol gel ini adalah pembentukan senyawa awal ( prekursor ) yang terdiri dari garam-garam organik atau senyawa metal organik, terjadinya polimerisasi larutan, terbentuknya, dan membutuhkan proses pengeringan dan kalsinasi untuk menghilangkan senyawa organik serta membentuk material anorganik berupa oksida. Beberapa material yang dihasilkan dengan menggunakan metode sol gel ini adalah ceramic fibers, thin film coating, monolithic ceramics and glasses.

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Linear and nonlinear optical studies of bare and copper doped TiO2 nanoparticles via sol gel technique

Cited by 34 publications

References 16 publications

Dye degradation performance, bactericidal behavior and molecular docking analysis of Cu-doped TiO₂ nanoparticles

Dye degradation performance, bactericidal behavior and molecular docking analysis of Cu-doped TiO₂ nanoparticles

Preparation and Characterization of Copper, Iron, and Nickel Doped Titanium Dioxide Photocatalysts for Decolorization of Methylene Blue

Sol Gel : Principle and Technique (A Review)

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Linear and nonlinear optical studies of bare and copper doped TiO2 nanoparticles via sol gel technique

Cited by 34 publications

References 16 publications

Dye degradation performance, bactericidal behavior and molecular docking analysis of Cu-doped TiO2 nanoparticles

Dye degradation performance, bactericidal behavior and molecular docking analysis of Cu-doped TiO2 nanoparticles

Preparation and Characterization of Copper, Iron, and Nickel Doped Titanium Dioxide Photocatalysts for Decolorization of Methylene Blue

Sol Gel : Principle and Technique (A Review)

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Dye degradation performance, bactericidal behavior and molecular docking analysis of Cu-doped TiO₂ nanoparticles

Dye degradation performance, bactericidal behavior and molecular docking analysis of Cu-doped TiO₂ nanoparticles