Comparative study of catalytic activity of ZrO2 nanoparticles for sonocatalytic and photocatalytic degradation of cationic and anionic dyes

Bansal, Puneet; Chaudhary, Ganga Ram; Mehta, S.K.

doi:10.1016/j.cej.2015.06.039

Cited by 149 publications

(45 citation statements)

References 44 publications

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“…In this regard, safer, cleaner, simpler and greener approaches have been considered for developing sustainable and environmentally friendly methods. For this purpose, nanoparticles supported on modified organic–inorganic hybrid surfaces with high selectivity and recyclability have been investigated . The palladium‐catalysed carbon–carbon bond forming reaction is considered as a powerful synthetic tool and a major area in catalysis, organic transformations and pharmaceutical, agrochemical and fine chemical industries .…”

Section: Introductionmentioning

confidence: 99%

Threonine stabilizer‐controlled well‐dispersed small palladium nanoparticles on modified magnetic nanocatalyst for Heck cross‐coupling process in water

Sarvi

Gholizadeh

Izadyar

2018

Applied Organom Chemis

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We report the synthesis of magnetically separable Fe3O4@Silica‐Threonine‐Pd0 magnetic nanoparticles with a core–shell structure. After synthesis of Fe3O4@Silica, threonine as an efficient stabilizer/ligand was bonded to the surface of Fe3O4@Silica. Then, palladium nanoparticles were generated on the threonine‐modified catalyst. The threonine stabilizer helps to generate palladium nanoparticles of small size (less than 4 nm) with high dispersity and uniformity. Magnetically separable Fe3O4@Silica‐Threonine‐Pd0 nanocatalyst was fully characterized using various techniques. This nanocatalyst efficiently catalysed the Heck cross‐coupling reaction of a variety of substrates in water medium as a green, safe and inexpensive solvent at 80°C. The Fe3O4@Silica‐Threonine‐Pd0 catalyst was used for at least eight successful consecutive runs with palladium leaching of only 0.05%.

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Section: Introductionmentioning

confidence: 99%

Threonine stabilizer‐controlled well‐dispersed small palladium nanoparticles on modified magnetic nanocatalyst for Heck cross‐coupling process in water

Sarvi

Gholizadeh

Izadyar

2018

Applied Organom Chemis

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“…These OH -ions produce OH Á radicals after combining with the holes of nanofibers photocatalyst. So the alkaline media up to a certain limit is considered responsible for good photocatalytic degradation efficiency (Bansal et al 2015). In very alkaline media, it is examined that photocatalytic efficiency again decreases.…”

Section: Resultsmentioning

confidence: 99%

Comparison of different phases of bismuth silicate nanofibers for photodegradation of organic dyes

Batool

Hassan

Imran

et al. 2016

Int. J. Environ. Sci. Technol.

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Two different phases of bismuth silicate nanofibers [Bi 2 SiO 5 and Bi 4 (SiO 4 ) 3 ] were synthesized using electrospinning technique. BS nanofibers were tested for the photocatalytic degradation of methyl orange and safranin O dyes. Different phases of BS affect the photodegradation efficiency of nanofibers. Impressive enhancement in photocatalytic efficiency and BET surface area of Bi 4 (SiO 4 ) 3 was observed over Bi 2 SiO 5 . A speedy reduction in dyes concentration was attributed to the rapid formation of oxygenated radicals by the capture of electrons and holes, generated in the BS nanofiber by UV irradiation. Therefore, the photocatalytic mechanism was elucidated using impedance spectroscopy at room temperature. The lower impedance value of Bi 4 (SiO 4 ) 3 nanofibers had improved high-efficiency charge transfer capability. The cycling efficiency (30 times) and recovery characteristics pointed out that Bi 4 (SiO 4 ) 3 nanofibers photocatalysts had high constancy, resilience, and regeneration ability.

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“…ZrO 2 NPs were prepared using chemical co‐precipitation method by adding 3.2 g of ZrOCl 2 ⋅ 8H 2 O under stirring for 450 ml of 0.088 M NaOH solution giving a white turbid solution. After 4 h, the solution was filtered and washed with 500 ml triply distilled water to remove the chloride ions and then calcined at 550 °C for 5 h.…”

Section: Methodsmentioning

confidence: 99%

A Zirconium Oxide Nanoparticle Modified Screen‐printed Electrode for Anodic Stripping Determination of Daclatasvir Dihydrochloride

2019

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A novel, sensitive and rapid voltammetric method applied for daclatasvir dihydrochloride (DSV.2HCl) detection in raw material, human plasma and urine using square wave voltammetry at a nano‐screen printed electrode (SPE) based on synthesized zirconium oxide nanoparticles (ZrO2 NPs). The attention to zirconium oxide nanoparticle syntheses arises from its likely use in making an electrode material in the electroanalytical process. Anodic stripping square wave voltammetric peaks have been recorded at the optimum conditions of drug solution as pH, scan rate, accumulation time and accumulation potential. Morphology of the used nanoparticles has been performed by scanning electron microscope (SEM) and transmission microscope (TEM). ZrO2 NPs were applied to screen printed electrode (ZrO2‐MSPE) giving a new sensor to detect the DSV.2HCl drug. ZrO2 NPs were tested for their electroactivity in improving electrodes sensitivity. The modified electrode has been used for the analysis of DSV.2HCl in spiked serum, spiked urine and pharmaceutical formulation.

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Comparative study of catalytic activity of ZrO2 nanoparticles for sonocatalytic and photocatalytic degradation of cationic and anionic dyes

Cited by 149 publications

References 44 publications

Threonine stabilizer‐controlled well‐dispersed small palladium nanoparticles on modified magnetic nanocatalyst for Heck cross‐coupling process in water

Threonine stabilizer‐controlled well‐dispersed small palladium nanoparticles on modified magnetic nanocatalyst for Heck cross‐coupling process in water

Comparison of different phases of bismuth silicate nanofibers for photodegradation of organic dyes

A Zirconium Oxide Nanoparticle Modified Screen‐printed Electrode for Anodic Stripping Determination of Daclatasvir Dihydrochloride

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