Synthesis, characterization and photocatalytic activity of novel Hg doped ZnO nanorods prepared by thermal decomposition method

Saravanan, R.; Gupta, Vinod Kumar; Prakash, T.; Narayanan, V.; Stephen, A.

doi:10.1016/j.molliq.2012.11.012

Cited by 292 publications

(48 citation statements)

References 47 publications

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“…Typical nanomaterials include nanotubes, nanoparticles, nanofibers, nanorods, fullerenes, and nanowires (Schmidt et al 2002;Gupta and Saleh 2013;Gupta and Nayak 2012;Saravanan et al 2013Saravanan et al , 2014.…”

Section: Nanomaterialsmentioning

confidence: 99%

Malachite green “a cationic dye” and its removal from aqueous solution by adsorption

2016

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Adsorption can be efficiently employed for the removal of various toxic dyes from water and wastewater. In this article, the authors reviewed variety of adsorbents used by various researchers for the removal of malachite green (MG) dye from an aqueous environment. The main motto of this review article was to assemble the scattered available information of adsorbents used for the removal of MG to enlighten their wide potential. In addition to this, various optimal experimental conditions (solution pH, equilibrium contact time, amount of adsorbent and temperature) as well as adsorption isotherms, kinetics and thermodynamics data of different adsorbents towards MG were also analyzed and tabulated. Finally, it was concluded that the agricultural solid wastes and biosorbents such as biopolymers and biomass adsorbents have demonstrated outstanding adsorption capabilities for removal of MG dye.

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Section: Nanomaterialsmentioning

confidence: 99%

Malachite green “a cationic dye” and its removal from aqueous solution by adsorption

2016

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“…Previously reported studies show that, the modifications of semiconductors such as TiO 2 , ZnO, ZnS and CeO 2 with metals/metal oxides nanoparticles, e.g. Au (Khan et al 2014b), Ag Khan et al 2013;Khan et al 2014a), Hg (Saravanan et al 2013b), Ce (Chang et al 2015), CuO (Saravanan et al 2013c) and CdO (Saravanan et al 2011), highly enhances the photocatalytic activity by shifting the absorption edges to longer wavelength and reducing (Saravanan et al 2013;Tripathy et al 2014).…”

Section: Introductionmentioning

confidence: 99%

A mini-review on rare earth metal-doped TiO2 for photocatalytic remediation of wastewater

Saqib

Adnan

Shah

2016

Environ Sci Pollut Res

113

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Titanium dioxide (TiO2) has been considered a useful material for the treatment of wastewater due to its non-toxic character, chemical stability and excellent electrical and optical properties which contribute in its wide range of applications, particularly in environmental remediation technology. However, the wide band gap of TiO2 photocatalyst (anatase phase, 3.20 eV) limits its photocatalytic activity to the ultraviolet region of light. Besides that, the electron-hole pair recombination has been found to reduce the efficiency of the photocatalyst. To overcome these problems, tailoring of TiO2 surface with rare earth metals to improve its surface, optical and photocatalytic properties has been investigated by many researchers. The surface modifications with rare earth metals proved to enhance the efficiency of TiO2 photocatalyts by way of reducing the band gap by shifting the working wavelength to the visible region and inhibiting the anatase-to-rutile phase transformations. This review paper summarises the attempts on modification of TiO2 using rare earth metals describing their effect on the photocatalytic activities of the modified TiO2 photocatalyst.

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“…Even under mild conditions of temperature and pressure the complete degradation of pollutants can be attained. The most significant feature of this process is its costeffectiveness [9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of TiO2 quantum dots for photocatalytic application

Gnanasekaran¹,

Hemamalini²,

Ravichandran

2015

Journal of Saudi Chemical Society

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In the present study, TiO 2 quantum dots (QDs) were effectively synthesized by the solgel method and it was characterized by several techniques. The structure of the TiO 2 QDs, before and after calcination, was analyzed by the powder X-ray diffraction technique. The XRD results indicate that after calcination, TiO 2 QDs have pure anatase phase with tetragonal structure without any other phases and impurities. The morphology and size of the TiO 2 QDs were determined from FE-SEM and TEM analysis. The optical band gap of TiO 2 QDs was estimated using KubelkaMunk function from diffuse reflectance spectroscopy. The photocatalytic activity and recycling ability of the TiO 2 QDs have been investigated. The TiO 2 QDs were used to degrade the model dyes such as methyl orange and methylene blue under UV light irradiation and their results have been discussed. A mechanism is proposed and discussed accordingly in detail. ª 2015 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Synthesis, characterization and photocatalytic activity of novel Hg doped ZnO nanorods prepared by thermal decomposition method

Cited by 292 publications

References 47 publications

Malachite green “a cationic dye” and its removal from aqueous solution by adsorption

Malachite green “a cationic dye” and its removal from aqueous solution by adsorption

A mini-review on rare earth metal-doped TiO2 for photocatalytic remediation of wastewater

Synthesis and characterization of TiO2 quantum dots for photocatalytic application

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