On the use of ferroelectric material LiNbO3 as novel photocatalyst in wastewater-fed microbial fuel cells

Touach, Noureddine; Ortiz-Martínez, V.M.; Salar-García, M.J.; Benzaouak, Abdellah; Hernández-Fernández, F.J.; Ríos, Antonia Pérez de los; Mahi, Mohammed El; Lotfi, El Mostapha

doi:10.1016/j.partic.2017.02.006

Cited by 47 publications

(16 citation statements)

References 47 publications

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“…This power value is 10 times greater than that of the MFC using the photocatalyst prepared by slow cooling, displaying a higher catalytic activity. [40] Compared with previous works, the power generated in the case of the Li 0.95 Ta 0.57 Nb 0.38 Cu 0.15 O 3 prepared by rapid cooling (205 mW/m 3 ) was 3.7 fold higher than that of the LiTaO 3 (55 mW/m 3 ), [33] and 1.6 fold higher than that of the LiNbO 3 , [43] indicating an important efficiency of the photocatalyst prepared by rapid cooling. [38] The smallest particles (11.24 mm) of the photocatalyst prepared by rapid cooling could also improve the catalytic properties compared with the photocatalyst prepared by slow cooling (42.60 mm) (see the PDS analysis).…”

Section: Psd Curvescontrasting

confidence: 60%

Preparation of new ferroelectric Li_0.95Ta_0.57Nb_0.38Cu_0.15O₃ materials as photocatalysts in microbial fuel cells

et al. 2018

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A microbial fuel cell (MFC) is a device for both the generation of bioelectricity and the treatment of wastewater. However, its performance is affected by several parameters, and more particularly the materials used as the active phase at the cathode. In order to develop new, more efficient cathodes, two new non-stoichiometric ferroelectric cathode materials are studied in this work. These electrodes have been synthesized according to two heat treatment modes (slow cooling and rapid cooling) from non-stoichiometric ferroelectric materials with the formula Li 0.95 Ta 0.57 Nb 0.38 Cu 0.15 O 3 . The synthesized phases were characterized by X-ray diffraction (XRD), transmission electronic microscopy (TEM), particle size distribution (PSD), and differential scanning calorimetry (DSC). The main characteristics of these phases are the Curie temperatures, 1217 and 1197 8C, and the specific surfaces of 0.572 and 0.801 m 2 /g for the slow and rapid cooling phases, respectively. These materials were subsequently tested as photocathodes in a single chamber MFC in terms of the bioenergy production and wastewater treatment, by measuring the output power density and the rate of removal of COD in the presence of a light source. For the samples prepared by slow and rapid cooling, the values of maximum power density were 20.10 and 205.35 mW/m 3 , respectively. The COD removal rates were 74 and 80 %, respectively. Accordingly, the phase prepared by rapid cooling was shown to be more efficient in terms of power generation and wastewater treatment with a significant improvement in photocatalytic activity.

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Section: Psd Curvescontrasting

confidence: 60%

Preparation of new ferroelectric Li_0.95Ta_0.57Nb_0.38Cu_0.15O₃ materials as photocatalysts in microbial fuel cells

et al. 2018

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“…LiNbO 3 ‐based single crystals and glasses have been widely investigated for non‐linear optical, dielectric, and laser applications 23–26 . LiNbO 3 has also been reported for its promising photocatalytic performance under UV light 27,28 . However, the use of UV light limits its use in water‐cleaning applications.…”

Section: Introductionmentioning

confidence: 99%

“…[23][24][25][26] LiNbO 3 has also been reported for its promising photocatalytic performance under UV light. 27,28 However, the use of UV light limits its use in water-cleaning applications. These UV lights can cause skin cancer and thus must not be used for water-cleaning applications.…”

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confidence: 99%

Surface plasmon resonance triggered promising visible light photocatalysis of LiNbO₃ ceramic supported Ag nanoparticles

et al. 2020

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Water pollution caused by textile industries poses a serious risk to aquatic and human life. 1,2 These industries discharge their waste-water-containing organic dyes into nearby natural sources of water (river, lake, etc.). 3 Many of these organic dyes are of carcinogenic nature. 1 Moreover, these organic dyes disturb aquatic life by causing eutrophication. 3 Nowadays, the photocatalysis process has emerged as an effective solution to remove harmful organic dyes pollutants from the water sources. 4-6 Many semiconductors with wider band gap values such as ZnO, 7 SrTiO 3 , 8 TiO 2 9 etc.

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“…9. Touach et al 90 used lithium niobate (LiNbO 3 ) as a ferroelectric and photo-catalyst material as a cathode catalyst for wastewater-fed single-chamber microbial fuel cells (MFCs); microbial cells are also discussed with regard to thermoelectrics (Section 6).…”

Section: Other Piezo-electro-chemical Applicationsmentioning

confidence: 99%

Control of electro-chemical processes using energy harvesting materials and devices

et al. 2017

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Energy harvesting is a topic of intense interest that aims to convert ambient forms of energy such as mechanical motion, light and heat, which are otherwise wasted, into useful energy. In many cases the energy harvester or nanogenerator converts motion, heat or light into electrical energy, which is subsequently rectified and stored within capacitors for applications such as wireless and self-powered sensors or low-power electronics. This review covers the new and emerging area that aims to directly couple energy harvesting materials and devices with electro-chemical systems. The harvesting approaches to be covered include pyroelectric, piezoelectric, triboelectric, flexoelectric, thermoelectric and photovoltaic effects. These are used to influence a variety of electro-chemical systems such as applications related to water splitting, catalysis, corrosion protection, degradation of pollutants, disinfection of bacteria and material synthesis. Comparisons are made between the range harvesting approaches and the modes of operation are described. Future directions for the development of electro-chemical harvesting systems are highlighted and the potential for new applications and hybrid approaches are discussed.

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On the use of ferroelectric material LiNbO3 as novel photocatalyst in wastewater-fed microbial fuel cells

Cited by 47 publications

References 47 publications

Preparation of new ferroelectric Li_0.95Ta_0.57Nb_0.38Cu_0.15O₃ materials as photocatalysts in microbial fuel cells

Preparation of new ferroelectric Li_0.95Ta_0.57Nb_0.38Cu_0.15O₃ materials as photocatalysts in microbial fuel cells

Surface plasmon resonance triggered promising visible light photocatalysis of LiNbO₃ ceramic supported Ag nanoparticles

Control of electro-chemical processes using energy harvesting materials and devices

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On the use of ferroelectric material LiNbO3 as novel photocatalyst in wastewater-fed microbial fuel cells

Cited by 47 publications

References 47 publications

Preparation of new ferroelectric Li0.95Ta0.57Nb0.38Cu0.15O3 materials as photocatalysts in microbial fuel cells

Preparation of new ferroelectric Li0.95Ta0.57Nb0.38Cu0.15O3 materials as photocatalysts in microbial fuel cells

Surface plasmon resonance triggered promising visible light photocatalysis of LiNbO3 ceramic supported Ag nanoparticles

Control of electro-chemical processes using energy harvesting materials and devices

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Preparation of new ferroelectric Li_0.95Ta_0.57Nb_0.38Cu_0.15O₃ materials as photocatalysts in microbial fuel cells

Preparation of new ferroelectric Li_0.95Ta_0.57Nb_0.38Cu_0.15O₃ materials as photocatalysts in microbial fuel cells

Surface plasmon resonance triggered promising visible light photocatalysis of LiNbO₃ ceramic supported Ag nanoparticles