Enhancement in the photo-electrocatalytic activity of SnO 2 -Sb 2 O 4 mixed metal oxide anode by nano-WO 3 modification: Application to trypan blue dye degradation

Rao, Anantha N. Subba; Venkatarangaiah, Venkatesha T.; Nagarajappa, Giridhar B.; Nataraj, Shubha H.; Krishnegowda, Pavithra M.

doi:10.1016/j.jece.2017.09.033

Cited by 14 publications

(6 citation statements)

References 61 publications

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“…In the photoelectrocatalytic oxidation of azo dyes on metal oxide electrodes, first of all, the nitrogen-nitrogen bond (-N=N-) breaks, which leads to discoloration of the solution (Subba Rao et al 2017). When comparing electrocatalytic and photoelectrocatalytic oxidation of azo dyes, the efficiency for the photoelectrocatalysis process is much higher.…”

Section: Photoelectrocatalytic Oxidationmentioning

confidence: 99%

“…Deposition on SnO2 -Sb2O4 of WO3 resulted in an increase in both color and COD removal efficiency. It was found that the percentage of COD removal using the SnO2-Sb2O4-WO3 electrode is 78 and 84%, respectively, under the conditions of electrocatalysis and photoelectrocatalysis (Subba Rao et al 2017).…”

Section: Photoelectrocatalytic Oxidationmentioning

confidence: 99%

“…The Orange II oxidation efficiency on bismuth ferrite (BFO) and 10% La-BFO photoanodes was 55.3% and 84.2%, respectively (Nkwachukwu et al 2021). Electrodes SnO2-Sb2O4-WO3 during photoelectrolysis for 120 min showed complete discoloration of the trypan blue dye solution with 84% COD removal at the same time (Subba Rao et al 2017). The use of a Ti/Pt/PbO2 electrode as a photoanode at the oxidation of direct red 80 (DR80) leads to increase the process efficiency compared to other electrode materials.…”

Section: Photoelectrocatalytic Oxidationmentioning

confidence: 99%

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Photoelectrochemical advanced oxidation processes for removal of azo dye from water: emerging aspects and oxidation products

Исаев

Shabanov

Rabadanov

et al. 2023

Preprint

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Azo dyes are one of the large classes of water soluble synthetic dyes with a wide range of colors and can be released into the environment when used. Azo dyes belong to one of the most numerous groups of synthetic dyes and are characterized by the presence of an azo group (-N=N-) with two or more symmetrical or asymmetrical aromatic radicals. Processes of photoelectrochemical oxidation using various approaches have been developed for the removal of azo dyes from wastewater. The fundamentals of different photoelectrochemical oxidation processes for azo dyes, such as photoelectrocatalytic oxidation (PEC), photoelectro-Fenton (PEF), and solar photoelectro-Fenton (SPEF) processes, are discussed. The use of different semiconductor materials as electrode materials in photoelectrocatalysis and PEF for azo dye removal, the influence of different parameters on the removal of azo dyes from wastewater, reactor design, combined photoelectrochemical oxidation, including the use of fuel cells, are also considered. The anodic, electrochemical, and photoelectrochemical oxidation processes for azo dye removal is compared. Also shows what products are mainly formed during photoelectrochemical oxidation of azo dyes and how photoelectrochemical oxidation affects the toxicity of azo dye solutions under different conditions.

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Section: Photoelectrocatalytic Oxidationmentioning

confidence: 99%

Section: Photoelectrocatalytic Oxidationmentioning

confidence: 99%

Section: Photoelectrocatalytic Oxidationmentioning

confidence: 99%

See 1 more Smart Citation

Photoelectrochemical advanced oxidation processes for removal of azo dye from water: emerging aspects and oxidation products

Исаев

Shabanov

Rabadanov

et al. 2023

Preprint

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“…Tungsten oxide (WO3) is one of photocatalyst materials which is very promising to purify several wastes of dyestuffs such as brilliant blue, methylene blue, quasiphenothiazine, azo, basic red 51, and trypan blue [12][13][14][15][16][17][18] . Since tungsten oxide has a band gap energy value of 2.7 -2.8 eV, it can degrade dye pollutants using visible light irradiation 19,20) .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of WO_3/Pt Nanoparticle by Microwave-assisted Sol-gel Method for Enhanced Photocatalytic Property in Visible Light

Widiyandari¹,

Ayash²,

Ja’farawy³

et al. 2023

Evergreen

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Pt co-catalyst WO3 (WO3/Pt) nanoparticle has been synthesized with a variation of platinum co-catalyst mass percentage using the microwave-assisted sol-gel method. The XRD characterization results show that WO3/Pt has a triclinic (anorthic) crystal structure. The touch diagram from UV-Vis DRS measurement exhibits that the energy band gap value of pristine WO3 nanoparticle of 2.89 eV, while for WO3/Pt was in the range of 3.23 -3.43 eV. PL spectra depicted the photoluminescence intensity decreasing by the addition of Pt. WO3/Pt improved photocatalytic properties in the degradation of methylene blue (MB) under visible light for 30 min irradiation up to 98.7% degraded.

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“…Various strategies have been proposed to boost the PEC properties of Sb-doped SnO 2 . In particular, one predominant method is the combination of Sb-doped SnO 2 with other active materials, such as Sb-SnO 2 /Ce-PbO 2 , Sb-SnO 2 -WO 3 , TiO 2 -NTs/SnO 2 -Sb, SiC/Sb-SnO 2 , Sb-SnO 2 -IrO 2 , and Sb-SnO 2 -WO 3 . This kind of hybrid configuration not only retains all the advantages of each component but also causes synergetic effects to enhance their photoelectrochemical properties such as photoelectrochemical reactivity, electrical/ionic conductivity, and mechanical stability. ,, However, there are still challenges for enhancing oxidation part of the Sb-SnO 2 hybrids by producing the hydroxyl radicals from water photo(electro)lysis.…”

Section: Introductionmentioning

confidence: 99%

Highly Enhanced Photoelectrocatalytic Oxidation via Cooperative Effect of Neighboring Two Different Metal Oxides for Water Purification

et al. 2020

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The generation of hydroxyl radicals derived from water molecules plays a pivotal role in attacking organic pollutants for the photoelectrocatalytic (PEC) process. To promote the generation efficiency of hydroxyl radicals, remarkably efficient transportation of the induced carriers and water molecules is desirable. Here, we implemented a remarkably enhanced photoelectrocatalytic oxidation via cooperative effect of neighboring two different metal oxides, Bi 2 MoO 6 and Sb-doped SnO 2 nanosheets, for water remediation. To realize the highly efficient transportation of the induced carriers, the hierarchical architecture Bi 2 MoO 6 wrapped Sb-doped SnO 2 nanosheets are rationally designed and synthesized. Density functional theory (DFT) calculations demonstrate that water molecules prefer to be adsorbed on the surface of Sb-doped SnO 2 nanosheets, producing hydroxyl radicals (•OH) on the surface of Bi 2 MoO 6 . The cooperation action between Bi 2 MoO 6 and Sb-doped SnO 2 nanosheets for the generation of hydroxyl radicals by water photoelectrolysis is enforced as follows: the Sb-doped SnO 2 nanosheet layer can act as the supply station of water and rapidly transfer the water molecules to neighboring Bi 2 MoO 6 to generate hydroxyl radical. This work may enlighten the design and construction of advanced photoanode materials for future scale-up of cost-effective water purification and environmental remediation.

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Enhancement in the photo-electrocatalytic activity of SnO 2 -Sb 2 O 4 mixed metal oxide anode by nano-WO 3 modification: Application to trypan blue dye degradation

Cited by 14 publications

References 61 publications

Photoelectrochemical advanced oxidation processes for removal of azo dye from water: emerging aspects and oxidation products

Photoelectrochemical advanced oxidation processes for removal of azo dye from water: emerging aspects and oxidation products

Synthesis of WO_3/Pt Nanoparticle by Microwave-assisted Sol-gel Method for Enhanced Photocatalytic Property in Visible Light

Highly Enhanced Photoelectrocatalytic Oxidation via Cooperative Effect of Neighboring Two Different Metal Oxides for Water Purification

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