Silver chromate and silver dichromate nanostructures: Sonochemical synthesis, characterization, and photocatalytic properties

Soofivand, Faezeh; Mohandes, Fatemeh; Salavati‐Niasari, Masoud

doi:10.1016/j.materresbull.2013.02.025

Cited by 151 publications

(44 citation statements)

References 37 publications

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“…The pHpzc of PbCrO 4 /P-25 catalyst is observed to be pH 3. Many studies focused on the evaluation of photocatalytic activity of Ag 2 CrO 4 [9][10][11][12], others on the modification and improvement of their properties [13][14][15]. In the literature, few studies concerned with the preparation of PbCrO 4 .…”

Section: Textural Characterization Pbcro 4 /P-25 Of Nanoparticlesmentioning

confidence: 99%

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Investigation of commercial PbCrO4/TiO2 for photodegradation of rhodamine B in aqueous solution by visible light

Abou-Gamra

Ahmed

Hamza

2017

Nanotechnol. Environ. Eng.

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This study throws light on utilization of visible light in removal dyes from wastewater using commercial PbCrO 4 /TiO 2 (P-25) composite which was prepared by grinding TiO 2 (P-25) with PbCrO 4 to decrease the adhesion properties of PbCrO 4 . As-prepared catalyst was characterized by DRS, XRD and N 2 adsorption-desorption. The morphology was examined by SEM. The photodegradation of rhodamine B (Rh B) product in the presence of PbCrO 4 / TiO 2 (P-25) composite was dependent on the pH of the medium. In 2 \ pH \ 10, Rh B was involved in photodegradation via N-deethylation terminated at rhodamine 110 while at pH = 2 rhodamine 110 underwent chromophore destruction. Obtained data showed that HO 2• /O 2•-species were involved in degradation of dye. Commercial PbCrO 4 /TiO 2 (P-25) composite is considered as good visible light-sensitive photocatalyst for removing Rh B.

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Section: Textural Characterization Pbcro 4 /P-25 Of Nanoparticlesmentioning

confidence: 99%

“…The catalyst exhibited high photocatalytic activity in degradation of pentachlorophenolate under visible light irradiation (98% after 5-h irradiation). Soofivand et al [11] …”

Section: Introductionmentioning

confidence: 99%

Investigation of commercial PbCrO4/TiO2 for photodegradation of rhodamine B in aqueous solution by visible light

Abou-Gamra

Ahmed

Hamza

2017

Nanotechnol. Environ. Eng.

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“…The metallic silver formed on the surface of Ag 2 CrO 4 catalyst in the hydrothermal process. [9] The metallic silver had the bigger particle size and changed the charge density. The above reasons made the infrared absorbance band blue shift.…”

Section: Morphologies and Structures Of Ag 2 Cro 4 Catalystsmentioning

confidence: 99%

“…[24] Silver chromate (Ag 2 CrO 4 ) is an important and promising inorganic material because of its unique electronic structure, crystal structure [17,25,26] and its good visible-light sensitive photocatalytic activity. [17,27] Particularly, Ag 2 CrO 4 materials exhibited extremely high photo oxidative capabilities for organic dye degradation under visible-light irradiation. [17,28] In the process of degradation for organic dye, not only the toxic hexavalent chromium was removed, but also the Ag 2 CrO 4 catalyst was produced at the same time.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity of silver chromate materials by various synthesis methods

Shen

Lü

Liu

et al. 2015

Journal of Experimental Nanoscience

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Silver chromate (Ag 2 CrO 4 ) nanocrystals were prepared by ultrasonic synthesis, template and hydrothermal methods. The visible-light photocatalytic activity of Ag 2 CrO 4 nanocrystals was investigated. The products synthesised by ultrasonic synthesis method had the highest activity and photodegraded the organic dye completely within only 8 min. The products synthesised by the other two methods had the same degradation time of about 42 min. The photocatalytic mechanism of the Ag 2 CrO 4 catalyst was studied. This work offered a new and feasible scheme that can dispose the chromium-containing waste water and can produce a new visible-light catalyst at the same time, which can degrade the organic pollutant in the waste water.

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“…So a novel single-source precursor including Fe and Co metals was applied for this purpose. Although the use of different complexes has been used to fabricate nano-sized materials [11][12][13][14][15][16][17] …”

Section: Introductionmentioning

confidence: 99%

Preparation of cobalt ferrite micro/nanoparticles by solid-state thermal decomposition of a novel single-source precursor

Hashemi

Mohandes

Salavati‐Niasari

et al. 2015

J Mater Sci: Mater Electron

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It seems that the use of coordination compounds as suitable precursors to synthesize ferrite micro/nanoparticles via solid-state methods has not been well developed. For this purpose, [Co(en) 3 ][Fe(ox) 3 ] complex (where en = ethylenediamine and ox = oxalate) as a novel precursor was used to prepare CoFe 2 O 4 nanoparticles. Solid-state thermal decomposition of the synthesized precursor at different temperatures in the range of 400-800°C led to the formation of CoFe 2 O 4 micro/nanoparticles with various particle sizes. X-ray diffraction patterns showed that pure CoFe 2 O 4 and CoFe 2 O 4 /Co 3 O 4 composite have been formed by thermal decomposition of the precursor at 700 and 800°C, respectively. In addition, it was concluded that by increasing the calcination temperature, particles sizes of the CoFe 2 O 4 nanoparticles increased as expected. According to the optical properties of the products, it was found that CoFe 2 O 4 micro/nanoparticles were semiconductors with electronic band gap of between 2.1 and 3.2 eV.

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Silver chromate and silver dichromate nanostructures: Sonochemical synthesis, characterization, and photocatalytic properties

Cited by 151 publications

References 37 publications

Investigation of commercial PbCrO4/TiO2 for photodegradation of rhodamine B in aqueous solution by visible light

Investigation of commercial PbCrO4/TiO2 for photodegradation of rhodamine B in aqueous solution by visible light

Photocatalytic activity of silver chromate materials by various synthesis methods

Preparation of cobalt ferrite micro/nanoparticles by solid-state thermal decomposition of a novel single-source precursor

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