Graphene oxide supported Fe
 3
 O
 4
 -MnO
 2
 nanocomposites for adsorption and photocatalytic degradation of dyestuff: ultrasound effect, surfactants role and real sample analysis

Singh, Ankit; Gautam, Ravindra Kumar; Agrahari, Shreanshi; Prajapati, Jyoti; Tiwari, Ida

doi:10.1080/03067319.2022.2091930

Cited by 8 publications

(2 citation statements)

References 76 publications

(10 reference statements)

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“…In environment-cleaning applications, different kinds of semiconductor compounds play an important role in the photocatalytic removal of dyes [ 229 ]. In recent years, MnO 2 -carbon materials have shown excellent performances in the photocatalytic degradation of organic dyes, which has attracted extensive research by researchers [ 239 , 240 , 241 , 242 , 243 , 244 , 245 , 246 , 247 , 248 , 249 ] ( Table 4 ). Park et al [ 250 ] synthesized PANI-rGO-MnO 2 ternary composites by polymerizing aniline with rGO and incorporating MnO 2 .…”

Section: Applications Of Photocatalytic Technology In Water Treatmentmentioning

confidence: 99%

Preparation of MnO2-Carbon Materials and Their Applications in Photocatalytic Water Treatment

et al. 2023

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Water pollution is one of the most important problems in the field of environmental protection in the whole world, and organic pollution is a critical one for wastewater pollution problems. How to solve the problem effectively has triggered a common concern in the area of environmental protection nowadays. Around this problem, scientists have carried out a lot of research; due to the advantages of high efficiency, a lack of secondary pollution, and low cost, photocatalytic technology has attracted more and more attention. In the past, MnO2 was seldom used in the field of water pollution treatment due to its easy agglomeration and low catalytic activity at low temperatures. With the development of carbon materials, it was found that the composite of carbon materials and MnO2 could overcome the above defects, and the composite had good photocatalytic performance, and the research on the photocatalytic performance of MnO2-carbon materials has gradually become a research hotspot in recent years. This review covers recent progress on MnO2-carbon materials for photocatalytic water treatment. We focus on the preparation methods of MnO2 and different kinds of carbon material composites and the application of composite materials in the removal of phenolic compounds, antibiotics, organic dyes, and heavy metal ions in water. Finally, we present our perspective on the challenges and future research directions of MnO2-carbon materials in the field of environmental applications.

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Section: Applications Of Photocatalytic Technology In Water Treatmentmentioning

confidence: 99%

Preparation of MnO2-Carbon Materials and Their Applications in Photocatalytic Water Treatment

et al. 2023

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“…A key aspect of AOPs involves photocatalytic mechanisms, in which semiconductor-mediated reactions are catalyzed upon exposure to light. As such, these photocatalytic processes hold considerable promise in mitigating the dual controversies of energy scarcity and environmental pollutants across a broad spectrum of solar radiation [14,15].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Solar Light-Driven Photocatalytic Degradation of Tetracycline Using Fe3+-Doped CdO/ZnS Nanocomposite: Mechanistic Insights and Performance Evaluation

Stella,

Sreevani,

Gurugubelli

et al. 2023

Catalysts

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In recent years, studies on the efficient spatial charge separation for broad solar light absorption and water remediation have been a major priority. Moreover, the development of transition metal-doped nanocomposites for this purpose is a new endeavor in current research. Here, we constructed an Fe3+-doped CdO/ZnS nanocomposite with a low doping level and investigated the effect of doping on the charge transfer and recombination behavior for improved photocatalytic performance. The X-ray diffraction analysis results indicate that both materials, CdO and ZnS, exhibit a cubic phase structure with an average crystallite size of 35 nm. Morphology analysis of the Fe3+-doped CdO/ZnS nanocomposite confirms the formation of irregularly shaped particle-like structures. From the optical studies, the bandgap energies of CdO/ZnS and Fe3+-doped CdO/ZnS nanocomposites are 3.19 eV and 2.87 eV, respectively, which proved that the iron ions doping reduced the bandgap energy and extended the absorption to the visible range. The efficiency of photodegradation in the tested samples was evaluated using tetracycline under solar light exposure. The experimental results demonstrated that the Fe3+-doped CdO/ZnS nanocomposite outperformed the other samples, exhibiting a significantly higher photocatalytic activity. After 80 min, it achieved a remarkable degradation rate of 97.06%. The Fe3+-doped CdO/ZnS nanocomposite demonstrated good stability and recyclability after five cycles. Radical trapping experiments showed that hydroxyl (•OH) radicals play a key role in photodegradation.

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A highly efficient NiCo2O4 decorated g-C3N4 nanocomposite for screen-printed carbon electrode based electrochemical sensing and adsorptive removal of fast green dye

Singh,

Agrahari,

Gautam

et al. 2023

Environ Sci Pollut Res

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Graphene oxide supported Fe ₃ O ₄ -MnO ₂ nanocomposites for adsorption and photocatalytic degradation of dyestuff: ultrasound effect, surfactants role and real sample analysis

Cited by 8 publications

References 76 publications

Preparation of MnO2-Carbon Materials and Their Applications in Photocatalytic Water Treatment

Preparation of MnO2-Carbon Materials and Their Applications in Photocatalytic Water Treatment

Enhanced Solar Light-Driven Photocatalytic Degradation of Tetracycline Using Fe3+-Doped CdO/ZnS Nanocomposite: Mechanistic Insights and Performance Evaluation

A highly efficient NiCo2O4 decorated g-C3N4 nanocomposite for screen-printed carbon electrode based electrochemical sensing and adsorptive removal of fast green dye

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Graphene oxide supported Fe 3 O 4 -MnO 2 nanocomposites for adsorption and photocatalytic degradation of dyestuff: ultrasound effect, surfactants role and real sample analysis

Cited by 8 publications

References 76 publications

Preparation of MnO2-Carbon Materials and Their Applications in Photocatalytic Water Treatment

Preparation of MnO2-Carbon Materials and Their Applications in Photocatalytic Water Treatment

Enhanced Solar Light-Driven Photocatalytic Degradation of Tetracycline Using Fe3+-Doped CdO/ZnS Nanocomposite: Mechanistic Insights and Performance Evaluation

A highly efficient NiCo2O4 decorated g-C3N4 nanocomposite for screen-printed carbon electrode based electrochemical sensing and adsorptive removal of fast green dye

Contact Info

Product

Resources

About

Graphene oxide supported Fe ₃ O ₄ -MnO ₂ nanocomposites for adsorption and photocatalytic degradation of dyestuff: ultrasound effect, surfactants role and real sample analysis