Photocatalytic degradation of methyl orange using α-Bi2O3 prepared without surfactant

Iyyapushpam, S.; Nishanthi, S.T.; Padiyan, D. Pathinettam

doi:10.1016/j.jallcom.2013.02.107

Cited by 80 publications

(38 citation statements)

References 16 publications

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“…The change in color indicated the formation of Bi2O3. As bismuth oxynitrate was used as a bismuth precursor as compared to previous reports that used bismuth nitrate [14][15][16][17][18][19], the reaction chemistry (with NH4OH) is presented as follows:…”

Section: Resultsmentioning

confidence: 99%

“…After calcination, a yellow powder was obtained and used for further characterization. This procedure was similar to the one followed in literature [14] with slight modifications. The above procedure was repeated for synthesis of bismuth oxide with different precipitating agent by replacing NH4OH with NaOH.…”

Section: Synthesis Of Bismuth Oxide Using Precipitation Methodsmentioning

confidence: 96%

“…The deposition method determines whether the catalyst is uniformly distributed on the support or accumulation of the oxide takes place on the areas of the support [10,11,12]. Therefore, various methods have been reported for synthesis Bi2O3 that include hydrothermal [13], direct precipitation [14][15][16][17][18][19], microwave [6,20], solution combustion [21,22], and sol gel [1]. Of all these methods, described for the synthesis of Bi2O3 particles, the precipitation method is one of the least complex and energy efficient.…”

Section: Introductionmentioning

confidence: 99%

“…Of all these methods, described for the synthesis of Bi2O3 particles, the precipitation method is one of the least complex and energy efficient. Some of the most common substances used as the precipitating agents are hydroxide [14][15][16] and ammonia/ammonium salts [14,17,18].…”

Section: Introductionmentioning

confidence: 99%

“…NH4OH and NaOH) have an effect structural and photocatalytic properties of Bi2O3. Additionally we used bismuth oxy nitrate as a source of bismuth as compared to the commonly used bismuth nitrate [14][15][16][17][18][19]. The results suggested that the Bi2O3 synthesized using NH4OH formed α-Bi2O3, whereas the one synthesized using NaOH formed a mixture of α-Bi2O3 and γ-Bi2O3.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Studying Impact of Different Precipitating Agents on Crystal Structure, Morphology and Photocatalytic Activity of Bismuth Oxide

Astuti

Arnelli

Pardoyo

et al. 2017

Bull. Chem. React. Eng. Catal.

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Bismuth oxide (Bi2O3) is a well-studied photocatalyst for degradation of various environmental contaminants. In this research Bi2O3 has been synthesized by precipitation method using two different bases (NH4OH and NaOH). The samples thus obtained were then analyzed using FTIR, XRD, and SEM for surface functionalization, crystal structures and morphological differences, respectively. The Bi2O3 precipitated using NH4OH showed a flower like structure made up of individual plates having α-Bi2O3 crystal structure. The precipitate obtained using NaOH showed a honeycomb like flower structure with a mixture of both α-Bi2O3 and γ-Bi2O3 crystal structure. Degradation of methyl orange (MO) was used as a model system to test the photocatalytic activity of the bismuth oxide. The Bi2O3 synthesized using NH4OH showed superior photocatalytic degradation of methyl orange than the one synthesized using NaOH.

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Section: Resultsmentioning

confidence: 99%

Section: Synthesis Of Bismuth Oxide Using Precipitation Methodsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Studying Impact of Different Precipitating Agents on Crystal Structure, Morphology and Photocatalytic Activity of Bismuth Oxide

Astuti

Arnelli

Pardoyo

et al. 2017

Bull. Chem. React. Eng. Catal.

View full text Add to dashboard Cite

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Advances in Nanomaterial‐based Water Treatment Approaches for Photocatalytic Degradation of Water Pollutants

2020

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Demand of pure drinking water is increasing day by day in line with both a growing population and global industrialization. Studies in the past few decades on the application of advanced oxidation processes (AOP) for the treatment of wastewater containing perilous organic pollutants, are promising when compared to conventional water treatment methods. In case of AOP, generation of powerful oxidant radicals (.OH, HOO.) is crucial for the purpose of degradation. Several processes for the in‐situ generation of such highly reactive oxidants have been discussed. This Review highlights the literature reports on the degradation of various organic pollutants (dyes, pharmaceuticals, pesticides, herbicides, insecticides) by means of photocatalysis. A number of scientific investigations have been performed, which elucidate suitable properties (band gap energy, carrier transport, crystallinity etc.) for the deliberate design of efficient photocatalysts. The oxidation rates and degradation efficiency of photocatalysts are governed by some basic parameters, like organic pollutant concentration, photocatalyst concentration, pH, reaction temperature, light intensity, irradiation time, inorganic ions, oxidants, and these are also discussed. Titania and titania based materials have many attractive properties (nontoxicity, less costly, advanced optical properties, high stability) towards photo degradation process. Several studies have been reported investigating the intermediates produced during degradation process as well as the final degraded product, which might be toxic and/or hazardous to the human as well as to the environment. This review assimilates elaborate study on the mechanism of photocatalytic degradation of various organic pollutants.

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Carbonaceous Spheres – Versatile Intermediaries for Metal Oxide Spherical Structure Synthesis

et al. 2014

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A facile, versatile, genuine green route that uses starch-derived carbonaceous spheres as the templates and carbon source for tailor-made ZnO spherical structures is described. A simple adjustment of the thermal treatment permits the generation of either ZnO/C solid microporous spheres or ZnO hollow spheres, the later with controlled diameter and[a] "1010 shell morphology. The spherical structures demonstrate good photocatalytic activity for the visible light degradation of methylene blue. Furthermore, ZnO/C has promising electrochemical capacitor applications and good electrochemical and mechanical stability.

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Photocatalytic degradation of methyl orange using α-Bi2O3 prepared without surfactant

Cited by 80 publications

References 16 publications

Studying Impact of Different Precipitating Agents on Crystal Structure, Morphology and Photocatalytic Activity of Bismuth Oxide

Studying Impact of Different Precipitating Agents on Crystal Structure, Morphology and Photocatalytic Activity of Bismuth Oxide

Advances in Nanomaterial‐based Water Treatment Approaches for Photocatalytic Degradation of Water Pollutants

Carbonaceous Spheres – Versatile Intermediaries for Metal Oxide Spherical Structure Synthesis

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