Photoelectrocatalytic degradation of acid dye using Ni–TiO2 with the energy supplied by solar cell: Mechanism and economical studies

Olya, Mohammad Ebrahim; Pirkarami, Azam; Soleimani, Majid; Bahmaei, Manochehr

doi:10.1016/j.jenvman.2013.01.041

Cited by 38 publications

(16 citation statements)

References 51 publications

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“…The increase in conversion level due to the increase of catalyst loading can be explained by an increase in the number of active sites available for photocatalytic reaction on the N,S co‐doped TiO 2 . Consequently, this results in an increase in the number of absorbed photons and adsorbed IBP and this in turn raises the number of oxidative species . The geometry and working conditions of the reactor are the most important factors affecting the threshold value of catalyst loading .…”

Section: Resultsmentioning

confidence: 99%

N,S co-doped TiO₂nanoparticles and nanosheets in simulated solar light for photocatalytic degradation of non-steroidal anti-inflammatory drugs in water: a comparative study

Eslami

Amini

Yazdanbakhsh

et al. 2016

J. Chem. Technol. Biotechnol.

134

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BACKGROUND: In this study, highly visible-light photoactive nitrogen and sulfur co-doped TiO 2 (N,S-TiO 2 ) nanoparticles and nanosheets were synthesized via facile sol-gel and hydrothermal methods, respectively. The photocatalytic activities of N,S-TiO 2 catalysts were evaluated by degradation of non-steroidal anti-inflammatory drugs, ibuprofen (IBP) and naproxen (NPX), under simulated solar irradiation. RESULTS:The N,S-TiO 2 nanoparticle is a well-developed mesoporous structure that contains both anatase and rutile phases and a large BET surface area (132 m 2 g −1 ). N,S-TiO 2 nanosheets contain a complete anatase phase with a larger mesoporous structure and a smaller BET surface area (64 m 2 g −1 ). The results showed that at catalyst loading of 2.0 g L −1 and pH 6, N,S-TiO 2 nanoparticles can degrade 85% and 99.3% of IBP and NPX. At the same conditions, 71.6% of IBP and 99.1% of NPX were degraded by N,S-TiO 2 nanosheets in this study. CONCLUSION:The high photocatalytic activity of N,S-TiO 2 may be due to synergistic effects of nitrogen and sulfur co-doping into TiO 2 , resulting in better separation of photogenerated electrons and holes and higher-visible light adsorption. Reusability tests of N,S-TiO 2 showed that it could retain its catalytic activity even after six cycles.

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Section: Resultsmentioning

confidence: 99%

N,S co-doped TiO₂nanoparticles and nanosheets in simulated solar light for photocatalytic degradation of non-steroidal anti-inflammatory drugs in water: a comparative study

Eslami

Amini

Yazdanbakhsh

et al. 2016

J. Chem. Technol. Biotechnol.

134

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“…Hence commercially available micro-TiO 2 is used in the study as photocatalyst. Olya et al [42] reported the cost per m 3 for treatment of textile wastewater by solar photocatalytic degradation process using Ni-TiO 2 to be around $9.42.…”

Section: Comparison With Nano-tiomentioning

confidence: 99%

Photocatalytic degradation of methyl blue by silver ion-doped titania: Identification of degradation products by GC-MS and IC analysis

Sahoo

Gupta

2015

Journal of Environmental Science and Health, Part A

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An anionic triphenyl methane dye, methyl blue ((disodium;4-[4-[[4-(4-sulfonatoanilino)phenyl]-[4-(4-sulfonatophenyl)azaniumylidenecyclohexa-2,5-dien-1-ylidene]methyl]anilino]benzene sulfonate) was degraded photocatalytically with undoped micro-TiO2- and Ag(+)-doped micro TiO2 in a slurry-type batch reactor under UV irradiation and the efficiency was compared with that obtained using nano-TiO2- and Ag(+)-doped nano-TiO2. The influence of different parameters, i.e., photocatalyst loading, dye concentration, initial pH, temperature, depth of solution, interfering ions and electron acceptors on the dye degradation was investigated. The decolorization and mineralization efficiency was better for Ag(+)-doped micro-TiO2 than undoped micro-TiO2. Nano-TiO2 was more efficient than micro-TiO2, while Ag(+)-doped nano-TiO2 was the most efficient of all. Cost analysis showed degradation using micro-TiO2- and Ag(+)-doped micro-TiO2 are much cheaper than that using nano-TiO2 and Ag(+)-doped nano-TiO2. Therefore Ag(+)-doped micro-TiO2 was used for the detailed study. The degradation products formed were identified using GC-MS analysis after photocatalytic degradation for 180 min with Ag(+) -doped micro TiO2. Ion chromatography analysis was carried out for anions to identify the end products of degradation.

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“…When the particle electrode reaches a certain amount in the reaction system, the oxidative degradation efficiency of chloramphenicol sharply declines with the continuous increase in the particle filling ratio. The reasons mainly include the following aspects: (a) The current density under a constant condition is not enough to excite polarization of excess particle electrode, and the excess particle electrode will become a high‐impedance material, reducing the mass transfer efficiency of the electron to some extent (Yan et al., ); (b) when the particle electrode is overfilled, excessive particle electrodes may be in contact with each other, leading to short‐circuiting current generation and side reactions (Zhao et al., ); (c) with the further increase in the number of particle electrodes, the 3‐D particle electrode tends to form a whole electrode, continuously decreasing electrocatalytic oxidation reaction area (Olya, Pirkarami, Soleimani, & Bahmaei, ). So, the optimal packing ratio is 50.0%.…”

Section: Resultsmentioning

confidence: 99%

Degradation of chloramphenicol using Ti‐Sb/attapulgite ceramsite particle electrodes

Sun

Chen

Zhu

et al. 2019

Water Environment Research

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Ti‐Sb/attapulgite ceramsite particle electrodes were prepared for the efficient degradation of chloramphenicol (CAP) in wastewater. To observe the surface morphology and structural characteristics of the Ti‐Sb/attapulgite ceramsite particle electrodes, Fourier transform infrared spectroscopy, X‐ray fluorescence, scanning electron microscopy, and X‐ray diffraction were used for characterization. Parameters affecting the degradation efficiency and the energy consumption of the Ti‐Sb/attapulgite ceramsite particle electrodes, such as current density, electrode distance, initial pH, conductivity, air flow, and packing ratio, were examined. Results showed that the optimal conditions were 20 mA/cm2 current intensity, 3 cm electrode distance, 5,000 μS/cm conductivity, 2.0 L/min air flow, 50.0% packing ratio, and initial pH 1. The removal efficiency of chloramphenicol was 73.7% under the optimal conditions, and the energy consumption was 191.3 (kW h)/kg CAP. Practitioner points Attapulgite ceramsite with good physical performance was prepared. The removal efficiencies for CAP in water by Ti‐Sb/attapulgite ceramsite particle electrodes were studied. CAP was effectively removed by 3‐D electrode system. CAP removal was significantly influenced by operational parameters. Three‐dimensional electrode system shows good degradation ability.

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Photoelectrocatalytic degradation of acid dye using Ni–TiO2 with the energy supplied by solar cell: Mechanism and economical studies

Cited by 38 publications

References 51 publications

N,S co-doped TiO₂nanoparticles and nanosheets in simulated solar light for photocatalytic degradation of non-steroidal anti-inflammatory drugs in water: a comparative study

N,S co-doped TiO₂nanoparticles and nanosheets in simulated solar light for photocatalytic degradation of non-steroidal anti-inflammatory drugs in water: a comparative study

Photocatalytic degradation of methyl blue by silver ion-doped titania: Identification of degradation products by GC-MS and IC analysis

Degradation of chloramphenicol using Ti‐Sb/attapulgite ceramsite particle electrodes

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Photoelectrocatalytic degradation of acid dye using Ni–TiO2 with the energy supplied by solar cell: Mechanism and economical studies

Cited by 38 publications

References 51 publications

N,S co-doped TiO2nanoparticles and nanosheets in simulated solar light for photocatalytic degradation of non-steroidal anti-inflammatory drugs in water: a comparative study

N,S co-doped TiO2nanoparticles and nanosheets in simulated solar light for photocatalytic degradation of non-steroidal anti-inflammatory drugs in water: a comparative study

Photocatalytic degradation of methyl blue by silver ion-doped titania: Identification of degradation products by GC-MS and IC analysis

Degradation of chloramphenicol using Ti‐Sb/attapulgite ceramsite particle electrodes

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Resources

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N,S co-doped TiO₂nanoparticles and nanosheets in simulated solar light for photocatalytic degradation of non-steroidal anti-inflammatory drugs in water: a comparative study

N,S co-doped TiO₂nanoparticles and nanosheets in simulated solar light for photocatalytic degradation of non-steroidal anti-inflammatory drugs in water: a comparative study