Graphitic-C3N4/ZnCr-layered double hydroxide 2D/2D nanosheet heterojunction: Mesoporous photocatalyst for advanced oxidation of azo dyes with in situ produced H2O2

Khamesan, Azin; Esfahani, Mahbod; Ghasemi, Jahan B.; Farzin, Faezeh; Parsaei-Khomami, Anita; Mousavi, Mitra

doi:10.1016/j.apt.2022.103777

Cited by 21 publications

(7 citation statements)

References 54 publications

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“…Furthermore, this sensor was also capable of detecting vanillin in real and complex matrices such as ice cream, chocolate, and water. Nevertheless, Khamesan et al [58] slightly modified the synthesis of ZnCr-LDH conducted by Gopi et al [113]. While Gopi et al [113] carried out the synthesis of bimetallic LDH in the presence of g-C3N4 in the hydrothermal reactor, Khamesan et al [58] synthesized them separately and subsequently combined both materials through ultrasonic irradiation.…”

Section: Layer-by-layer Assemblymentioning

confidence: 99%

Pushing the Operational Barriers for g-C3N4: A Comprehensive Review of Cutting-Edge Immobilization Strategies

Fdez-Sanromán,

Pazos,

Rosales

et al. 2024

Catalysts

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This comprehensive review explores recent advancements in immobilization strategies for graphitic carbon nitride (g-C3N4), a metal-free photocatalyst that has gained significant attention for its optical and physicochemical properties comparable to traditional photocatalysts like TiO2. However, a critical challenge regarding their application has emerged from the difficulty of its recovery due to its powdery nature. Therefore, several alternatives are being explored to immobilize this material, facilitating its recovery and reuse. This review systematically categorizes various physical and chemical immobilization techniques, providing an in-depth analysis of their advantages, drawbacks, and applications. Techniques such as encapsulation, electrospinning, casting, and coating, along with their adaptations for g-C3N4, are thoroughly examined. Additionally, the impact of these strategies on enhancing the photocatalytic efficiency and operational stability of g-C3N4, particularly in environmental applications, is also assessed. Thus, this review aims to provide valuable insights and guide future research in the realms of photocatalysis and environmental remediation. The review contributes to the understanding of how immobilization strategies can optimize the performance of g-C3N4, furthering its potential applications in sustainable and efficient environmental solutions.

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Section: Layer-by-layer Assemblymentioning

confidence: 99%

Pushing the Operational Barriers for g-C3N4: A Comprehensive Review of Cutting-Edge Immobilization Strategies

Fdez-Sanromán,

Pazos,

Rosales

et al. 2024

Catalysts

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“…However, the inherent poor conductivity of bare g-C 3 N 4 poses a limitation for its direct use in electrochemical sensors. To address this drawback, one viable solution is to combine it with other materials, such as conducting polymers, metal oxides, and carbon-based materials 36 , 37 . Carbon nanotube (CNT) has emerged as a prominent choice due to its exceptional features, including outstanding chemical and mechanical stability, remarkable electrical conductivity, and high specific surface area.…”

Section: Introductionmentioning

confidence: 99%

Machine learning-enhanced drug testing for simultaneous morphine and methadone detection in urinary biofluids

Habibi,

Mousavi,

Shekofteh-Gohari

et al. 2024

Sci Rep

Self Cite

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The simultaneous identification of drugs has considerable difficulties due to the intricate interplay of analytes and the interference present in biological matrices. In this study, we introduce an innovative electrochemical sensor that overcomes these hurdles, enabling the precise and simultaneous determination of morphine (MOR), methadone (MET), and uric acid (UA) in urine samples. The sensor harnesses the strategically adapted carbon nanotubes (CNT) modified with graphitic carbon nitride (g-C3N4) nanosheets to ensure exceptional precision and sensitivity for the targeted analytes. Through systematic optimization of pivotal parameters, we attained accurate and quantitative measurements of the analytes within intricate matrices employing the fast Fourier transform (FFT) voltammetry technique. The sensor’s performance was validated using 17 training and 12 test solutions, employing the widely acclaimed machine learning method, partial least squares (PLS), for predictive modeling. The root mean square error of cross-validation (RMSECV) values for morphine, methadone, and uric acid were significantly low, measuring 0.1827 µM, 0.1951 µM, and 0.1584 µM, respectively, with corresponding root mean square error of prediction (RMSEP) values of 0.1925 µM, 0.2035 µM, and 0.1659 µM. These results showcased the robust resiliency and reliability of our predictive model. Our sensor’s efficacy in real urine samples was demonstrated by the narrow range of relative standard deviation (RSD) values, ranging from 3.71 to 5.26%, and recovery percentages from 96 to 106%. This performance underscores the potential of the sensor for practical and clinical applications, offering precise measurements even in complex and variable biological matrices. The successful integration of g-C3N4-CNT nanocomposites and the robust PLS method has driven the evolution of sophisticated electrochemical sensors, initiating a transformative era in drug analysis.

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“…As an effective, multifunctional and green oxidizer, hydrogen peroxide (H2O2) is used in lots of applications, such as pollutant purification, medical disinfection and chemical synthesis. In addition, H2O2 can also be utilized as the high-density energy carrier for fuel cells [42][43][44] . Currently, commercial H2O2 is mainly achieved by conventional anthraquinone oxidation, which is not only costly and energy intensive, but also produces the toxic byproducts.…”

Section: Introductionmentioning

confidence: 99%

Review of S-Scheme Heterojunction Photocatalyst for H<sub>2</sub>O<sub>2</sub> Production

Zhang¹,

Li²,

Yuan³

et al. 2023

Acta Physico Chimica Sinica

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Rapid industrialization throughout the 20th and 21st centuries has led to the excessive consumption of fossil fuels to satisfy global energy demands. The dominant use of these fuel sources is the main cause of the ever-increasing environmental issues that greatly threaten humanity. Therefore, the development of renewable energy sources is fundamental to solving environmental issues. Solar energy has received widespread attention over the past decades as a green and sustainable energy source. Solar radiation-induced photocatalytic processes on the surface of semiconductor materials are able to convert solar energy into other energy sources for storage and further applications. However, the preparation of highly efficient and stable photocatalysts remains challenging. Recently, a new step-scheme (S-scheme) carrier migration mechanism was reported that solves the drawbacks of carrier migration in conventional heterojunction photocatalysts. The S-scheme heterojunction not only effectively solves the carrier migration problem and achieves fast separation but also preserves the powerful redox abilities and improves the catalytic performance of the photocatalytic system. To date, various S-scheme heterojunctions have been developed and employed to convert solar energy into useful chemical fuels to decrease the reliance on fossil fuels. Furthermore, these systems can also be used to degrade pollutants and reduce the harmful impact on the environment associated with the consumption of fossil fuels, including H2 evolution, pollutant degradation, and the reduction of CO2. H2O2 has been used as an effective, multipurpose, and green oxidizing agent in many applications including pollutant purification, medical disinfection, and chemical synthesis. It has also been used as a high-density energy carrier for fuel cells, with only water and oxygen produced as by-products. Photocatalytic technology provides a low-cost, environmentally friendly, and safe way to produce H2O2, requiring only solar energy, H2O, and O2 gas as raw materials. This paper reviews new S-scheme heterojunction designs for photocatalytic H2O2 production, including g-C3N4-, sulfide-, TiO2-, and ZnO-based S-scheme heterojunctions. The main principles of photocatalytic H2O2 production and the formation mechanism of the S-scheme heterojunction are also discussed. In addition, effective advanced characterization methods for S-scheme heterojunctions have been analyzed. Finally, the challenges that need to be addressed and the direction of future research are identified to provide new methods for the development of high-performance photocatalysts for H2O2 production.

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Graphitic-C3N4/ZnCr-layered double hydroxide 2D/2D nanosheet heterojunction: Mesoporous photocatalyst for advanced oxidation of azo dyes with in situ produced H2O2

Cited by 21 publications

References 54 publications

Pushing the Operational Barriers for g-C3N4: A Comprehensive Review of Cutting-Edge Immobilization Strategies

Pushing the Operational Barriers for g-C3N4: A Comprehensive Review of Cutting-Edge Immobilization Strategies

Machine learning-enhanced drug testing for simultaneous morphine and methadone detection in urinary biofluids

Review of S-Scheme Heterojunction Photocatalyst for H<sub>2</sub>O<sub>2</sub> Production

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