Adsorption of Pb(II) on Nano Sized SnO2 Derived from Sol-Gel Method

Rejani, P.; Radhakrishnan, Asha; Beena, B.

doi:10.7763/ijcea.2014.v5.387

Cited by 5 publications

(5 citation statements)

References 10 publications

(10 reference statements)

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“…For the SnO 2 sample synthesized via the modified polyacrylamide gel route, in a recent published study [25] reported a calculated crystallite size of the sample prepared by using oxalic acid as the chelating agent at 118 nm. Another study on the synthesis of the nanoparticles tin oxide (SnO 2 ) using citric acid as the chelating agent at 15 nm [26]. Therefore, our values are much lower than the reported data.…”

Section: Xrd Analysiscontrasting

confidence: 72%

Adsorption of Congo red azo dye on nanosized SnO2 derived from sol-gel method

2015

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The nanoparticles tin oxide (SnO 2 ) has been successfully synthesized via a sol-gel method. The asprepared SnO 2 was characterized using thermogravimetric analysis coupled with mass spectroscopy, X-ray diffraction and scanning electron microscope. Batch experiments were carried out to study the adsorption kinetics of Congo red azo dye on SnO 2 . The effect of varying parameters such as contact time, initial dye concentration and adsorbent dose on the adsorption process was investigated. The results showed that the SnO 2 catalysts has high crystallinity with tetragonal rutile structure and average particle size about 13-23 nm. The untreated sample SnO 2 -80 exhibited high efficiency (84.41 %) after 60 min of exposure time, which was 2 times as much as that of SnO 2 -450 sample. The adsorption process was found to be highly dye concentration and adsorbent dose dependent. Pseudo-second-order kinetic model gave the best fit, with highest correlation coefficients (R 2 C 0.99). Regarding the adsorption equilibrium, the experimental results suggest that the Langmuir model was applicable. The formation of hydrogen bond and the electrostatic interaction between the Sn 2? center and the electron rich nitrogen atoms of CR moiety were believed to be the main adsorption mechanism. These findings should be valuable for designing effectively adsorbent material and practical interest in terms of ecology and sustainable development.

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Section: Xrd Analysiscontrasting

confidence: 72%

Adsorption of Congo red azo dye on nanosized SnO2 derived from sol-gel method

2015

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“…Figure 1 represents the absorbance of PVP/PEO/SiC and PVP/PEO/TiO 2 films with wavelength. The PVP/PEO/SiC and PVP/PEO/TiO 2 nanocomposites samples have high values of absorbance for the UV radiation with attributed to the electrons excitation at UV light [9]. The absorption values of (PVP-PEO) blend rise with rising in SiC and TiO 2 nanoparticles' ratios, which may be related to the absorption and scattering the photons by the charge carriers of SiC and TiO 2 nanoparticles as shown in Fig.…”

Section: Resultsmentioning

confidence: 90%

Synthesis and Improving the Characteristics of Polymeric Blend Doped with Inorganic Nanoparticles for Optoelectronics Devices

2021

Nanosistemi, Nanomateriali, Nanotehnologii

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In present paper, the structural, optical and electronic characteristics of PVP/PEO blend doped with silicon carbide and titanium oxide are studied for various optoelectronic applications like sensors, transistors, solar cell, photocatalysts and photovoltaic cell. Results show that absorption of blend increases about 78.3% and 77% when ratios rise in SiC and TiO 2 to 4.5 wt.% at 400 nm. The energy band gap of blend decreases from 3.6 eV to 3.3 eV and 3.31 eV when the contents of SiC and TiO 2 nanoparticles reach to 4.5 wt.%. The results concerning the electronic characteristics indicated to the excellent values of electronics parameters with the increase in SiC and TiO 2 contents. Finally, the obtained results concerning the PVP/PEO/SiC and PVP/PEO/TiO 2 nanocomposites have good structural, optical and electronic characteristics, which can be suitable for photonics and electronics fields with low cost, lightweight and flexibility.

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“…43,45 These oxygen vacancy defects act as dipoles and enhance the dielectric properties of the material. 46 The emission of green coloured light around 519 nm has been assigned to the presence of Zn and oxygen at interstitial positions. [47][48][49] To check the effect of depositing ZnO nanoparticles on electrodes, the capacitance without and with ZnO deposition has been computed.…”

Section: Resultsmentioning

confidence: 99%