Characterization of CoCr2O4 semiconductor: A prominent photocatalyst in the degradation of basic blue 41 from wastewater

Benrighi, Yasmine; Nasrallah, Noureddine; Chaabane, T.; Sivasankar, V.; Darchen, André; Baaloudj, Oussama

doi:10.1016/j.optmat.2021.111819

Cited by 18 publications

(4 citation statements)

References 53 publications

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“…[12][13][14][15]. These techniques offer a solution to this problem [16]. Among these, photocatalysis and the coupling of photocatalysis and strong oxidants (ozone, hydrogen peroxide, etc.)…”

Section: Introductionmentioning

confidence: 99%

Advanced Photocatalytic Treatment of Wastewater Using Immobilized Titanium Dioxide as a Photocatalyst in a Pilot-Scale Reactor: Process Intensification

et al. 2022

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In many nations, particularly those experiencing water scarcity, novel approaches are being applied to clean wastewater. Heterogeneous photocatalysis is the most widely used of these approaches because it entails the decomposition of organic molecules into water and carbon dioxide, which is a more ecologically benign process. In our study, we studied the photocatalytic degradation process on the effluent flumequine. This treatment is made through a solar pilot reactor in the presence of immobilized titanium dioxide with three light intensities and two types of water as solvents. A variety of factors that might influence the rate of deterioration, such as flow rate, light intensity, and initial concentration, have been investigated. The maximal degradation of flumequine was achieved at more than 90% after 2.5 h under optimal conditions (an initial concentration of 5 mg/L, three lamp light intensities, and a flow rate of 29 L/h). By combining the oxidized agent H2O2 with this process, the photocatalytic activity was improved further to 97% under the same conditions. The mineralization of this product has also been tested using total organic carbon (TOC) analysis. A high mineralization rate has been recorded at around 50% for a high initial concentration (20 mg/L) at a flow rate of 126 L/h. The results demonstrated the highly effective removal of flumequine and the efficacy of this photocatalytic system.

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Section: Introductionmentioning

confidence: 99%

Advanced Photocatalytic Treatment of Wastewater Using Immobilized Titanium Dioxide as a Photocatalyst in a Pilot-Scale Reactor: Process Intensification

et al. 2022

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“…In actuality, they do not completely eliminate pollutants, they rather transfer them from one phase to another [14]. In general, these techniques have considerable drawbacks and disadvantages, one of which is contamination with treatment by-products, which can increase the risk of cancer and pollute the environment [15,16]. Therefore, developing innovative methods and approaches for treating water and wastewater is very necessary [6].…”

Section: Introductionmentioning

confidence: 99%

Bismuth Sillenite Crystals as Recent Photocatalysts for Water Treatment and Energy Generation: A Critical Review

et al. 2022

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Photocatalysis has been widely studied for environmental applications and water treatment as one of the advanced oxidation processes (AOPs). Among semiconductors that have been employed as catalysts in photocatalytic applications, bismuth sillenite crystals have gained a great deal of interest in recent years due to their exceptional characteristics, and to date, several sillenite material systems have been developed and their applications in photoactivity are under study. In this review paper, recent studies on the use of Bi-based sillenites for water treatment have been compiled and discussed. This review also describes the properties of Bi-based sillenite crystals and their advantages in the photocatalytic process. Various strategies used to improve photocatalytic performance are also reviewed and discussed, focusing on the specific advantages and challenges presented by sillenite-based photocatalysts. Furthermore, a critical point of certain bismuth catalysts in the literature that were found to be different from that reported and correspond to the sillenite form has also been reviewed. The effectiveness of some sillenites for environmental applications has been compared, and it has demonstrated that the activity of sillenites varies depending on the metal from which they were produced. Based on the reviewed literature, this review summarizes the current status of work with binary sillenite and provides useful insights for its future development, and it can be suggested that Bismuth sillenite crystals can be promising photocatalysts for water treatment, especially for degrading and reducing organic and inorganic contaminants. Our final review focus will emphasize the prospects and challenges of using those photocatalysts for environmental remediation and renewable energy applications.

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“…2 This dye is potentially fatal to living organisms as it may cause respiratory irritation, nausea, diarrhea, vomiting, excessive perspiration, methemoglobinemia, and mental disorientation. 3 Thus, many scientific and technological efforts have been devoted to achieving effective strategies for treating wastewater containing dyes in recent decades. 1,4 Among numerous techniques used for this purpose, semiconductor-based photocatalysis has been recognized as an applicable and promising "green" method to mineralize and degrade dye molecules due to its potential applications under renewable solar energy.…”

Section: Introductionmentioning

confidence: 99%

“…One of the most dangerous dyes is Basic Blue 41 (BB 41), which is typically used for dyeing silk, wool, cotton, and acrylic 2 . This dye is potentially fatal to living organisms as it may cause respiratory irritation, nausea, diarrhea, vomiting, excessive perspiration, methemoglobinemia, and mental disorientation 3 . Thus, many scientific and technological efforts have been devoted to achieving effective strategies for treating wastewater containing dyes in recent decades 1,4 .…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of Basic Blue 41 dye under visible light over SrTiO₃/Ag₃PO₄ hetero‐nanostructures

Kafian

Sadeghzadeh‐Attar

2022

Int J Applied Ceramic Tech

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In an attempt to develop nanostructured photocatalysts with high performance, SrTiO 3 /Ag 3 PO 4 hetero-nanostructures were successfully fabricated. The formed binary heterojunctions were composed of SrTiO 3 nanotubes prepared using liquid-phase deposition, and Ag 3 PO 4 nanoparticles prepared using a sol-gel method. Synthesis details, including morphology, structure, and optical properties of the prepared photocatalysts, were characterized and comparatively discussed. The results showed that at an optimal ratio of SrTiO 3 to Ag 3 PO 4 (20-80), the photocatalytic degradation of Basic Blue 41 under 80-min visible light irradiation is the maximum amount of 99%, which is about 4.4 and 1.5 times higher than that of pristine SrTiO 3 nanorods and Ag 3 PO 4 nanoparticles, respectively. It can be due to the synergistic effect of two materials that provide high light absorption and charge carriers' separation. Finally, a detailed possible mechanism for enhancing the photocatalytic activity of the SrTiO 3 /Ag 3 PO 4 hetero-nanostructures was proposed.

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Characterization of CoCr2O4 semiconductor: A prominent photocatalyst in the degradation of basic blue 41 from wastewater

Cited by 18 publications

References 53 publications

Advanced Photocatalytic Treatment of Wastewater Using Immobilized Titanium Dioxide as a Photocatalyst in a Pilot-Scale Reactor: Process Intensification

Advanced Photocatalytic Treatment of Wastewater Using Immobilized Titanium Dioxide as a Photocatalyst in a Pilot-Scale Reactor: Process Intensification

Bismuth Sillenite Crystals as Recent Photocatalysts for Water Treatment and Energy Generation: A Critical Review

Photocatalytic degradation of Basic Blue 41 dye under visible light over SrTiO₃/Ag₃PO₄ hetero‐nanostructures

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Characterization of CoCr2O4 semiconductor: A prominent photocatalyst in the degradation of basic blue 41 from wastewater

Cited by 18 publications

References 53 publications

Advanced Photocatalytic Treatment of Wastewater Using Immobilized Titanium Dioxide as a Photocatalyst in a Pilot-Scale Reactor: Process Intensification

Advanced Photocatalytic Treatment of Wastewater Using Immobilized Titanium Dioxide as a Photocatalyst in a Pilot-Scale Reactor: Process Intensification

Bismuth Sillenite Crystals as Recent Photocatalysts for Water Treatment and Energy Generation: A Critical Review

Photocatalytic degradation of Basic Blue 41 dye under visible light over SrTiO3/Ag3PO4 hetero‐nanostructures

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Photocatalytic degradation of Basic Blue 41 dye under visible light over SrTiO₃/Ag₃PO₄ hetero‐nanostructures