Titanium dioxide and cadmium sulfide co-sensitized graphitic carbon nitride nanosheets composite photocatalysts with superior performance in phenol degradation under visible-light irradiation

Yao, Jianyong; Chen, Huan; Jiang, Fang; Jiao, Zhongyi; Jin, Mingchang

doi:10.1016/j.jcis.2016.11.051

Cited by 70 publications

(28 citation statements)

References 47 publications

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“…A review from 2016 collects a variety of examples of biopolymer‐graphene nanocomposites together with the available processing methods . In the same context of photocatalytic degradation, carbon nitride has been investigated under combinations with titanium dioxide and cadmium . Graphite has been proven to be degradable in the presence of Penicillium funiculosum in combinations with poly(3‐hydroxybutyrate) (PHB) matrix, despite a higher incubation period .…”

Section: Nanofillersmentioning

confidence: 99%

“…[155] In the same context of photocatalytic degradation, carbon nitride has been investigated under combinations with titanium dioxide and cadmium. [156] Graphite has been proven to be degradable in the presence of Penicillium funiculosum in combinations with poly(3-hydroxybutyrate) (PHB) matrix, despite a higher incubation period. [157] Less information is available about CB in terms of biodegradability behavior in polymer nanocomposites with biodegradable matrixes.…”

Section: A Green Approach Toward Carbon Nanocompositesmentioning

confidence: 99%

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An application‐oriented roadmap to select polymeric nanocomposites for advanced applications: A review

2019

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Polymeric nanocomposites are the materials incorporating nanosized inclusions into the polymer matrixes. The result of the addition of nanoparticles/fibers is a drastic improvement in properties that may include mechanical, electrical, thermal conductivity, or even the acoustical properties. Polymer nanocomposites have spawned huge interest for the development of high‐performance products such as lightweight sensors, thin‐film capacitors, batteries, flame retardant products, biodegradable and biocompatible materials, and so on. The field of polymer nanocomposites has been at the forefront of research in the polymer community for the past few decades and an extremely large number of scientific papers have been published. Nevertheless, application‐oriented guidelines for selecting the ecofriendly nanocomposites for advanced industrial applications are missing in the state of the art. This review article summarizes the current state‐of‐the‐art polymeric nanocomposites, highlighting prominent nanofillers categorized based on their applications, origins, dimensional characteristics, and so on. Each filler type contains a short description of its main feature together with the most relevant and potential applications. To address the global concern about nondegradable wastes, novel green alternatives of each nanofiller type are discussed. Special attention is also given to the biocompatibility properties of the composites. This study provides a state‐of‐the‐art road map to select multifunctional polymeric nanocomposites from huge varieties for advanced industrial applications.

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Section: Nanofillersmentioning

confidence: 99%

Section: A Green Approach Toward Carbon Nanocompositesmentioning

confidence: 99%

An application‐oriented roadmap to select polymeric nanocomposites for advanced applications: A review

2019

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“…Many techniques, such as chemical, electrochemical, physical, photoelectrochemical, and photocatalytic methods, can be used to deal with such types of compounds. The current approach is to use an advanced oxidation process in which a photocatalyst is used along with a green oxidizing agent such as ozone or hydrogen peroxide [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…Qianqian et al, Bai et al, and Liu et al have used centrifugation for their nanomaterials; however, these techniques require several media transfers [10][11][12]. Filtration can be achieved using different types of cellulose filter papers and microporous membranes [1,9,[13][14][15][16][17][18]. Among the commonly used membranes are nylon membranes [7,17,[19][20][21] which will be used in this study.…”

Section: Introductionmentioning

confidence: 99%

Toward an Accurate Spectrophotometric Evaluation of the Efficiencies of Photocatalysts in Processes Involving Their Separation Using Nylon Membranes

et al. 2018

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Many works include the use of nylon membranes to separate the solid particles of photocatalysts from the photocatalytic reactors, before using spectrophotometers to evaluate the catalysts' performance in the photocatalytic degradation of many pollutants. This might lead to significant errors due to the adsorption of some pollutants within the structure of the membranes during the filtration process used to separate the solid particles of the photocatalysts to get a clear filtrate. This, consequently, leads to incorrect calculations, which in turn are translated into false high photocatalytic efficiencies of the used catalysts. In this work, the authors study the interaction between nylon membrane filters and five different model compounds-phenol red, methylene blue, rhodamine B, rhodamine 6G, and phenol. The study reveals a significant interaction between the nylon membranes and both rhodamine B and phenol red.During the investigation of the fluorescence signal in the photodegradation of polymers and pollutant degradation, we serendipitously discovered that a simple model compound, such as phenol red and rhodamine B, is removed efficiently through filtration using the commonly used Whatman nylon filter membranes purchased from Sigma Aldrich. This type of filter membrane, with a 0.2 µm pore size, 47 mm diameter, and 0.5 mm thickness, is proposed to be used after the photodegradation process to remove the submicron photocatalysts and obtain the filtrate for spectrophotometric analysis. This observation made us curious and, thus, we decided to investigate more in depth the removal efficiency of these nylon membranes and the removal mechanism beyond this observation. We chose several probes with different chemical characteristics, such as rhodamine B, phenol, rhodamine 6G, phenol red, and methylene blue. Our results indicate that the nature of the chemical structure is responsible for the removal through a chemical mechanism, involving a negatively charged molecule interacting with a positive charge from the terminal part of a polymer backbone in polyamide-based filters.

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“…Yao and his group tested TiO 2 -CdS-gCNNSs composite for degradation of 10 ppm phenol under visible light irradiation. They obtained 80% degradation within 300 min 56 . S. Obrego’n and G. Colo’n found that the modification of TiO 2 /g-C 3 N 4 composite with Pt and Mn improved the photocatalytic activity of phenol degradation under UV radiation.…”

Section: Resultsmentioning

confidence: 98%

An efficient eco advanced oxidation process for phenol mineralization using a 2D/3D nanocomposite photocatalyst and visible light irradiations

Al-Kandari

Abdullah

Ahmad

et al. 2017

Sci Rep

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Nanocomposites (CNTi) with different mass ratios of carbon nitride (C3N4) and TiO2 nanoparticles were prepared hydrothermally. Different characterization techniques were used including X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS), transmission electron spectroscopy (TEM) and Brunauer-Emmett-Teller (BET). UV-Vis DRS demonstrated that the CNTi nanocomposites exhibited absorption in the visible light range. A sun light - simulated photoexcitation source was used to study the kinetics of phenol degradation and its intermediates in presence of the as-prepared nanocomposite photocatalysts. These results were compared with studies when TiO2 nanoparticles were used in the presence and absence of H2O2 and/or O3. The photodegradation of phenol was evaluated spectrophotometrically and using the total organic carbon (TOC) measurements. It was observed that the photocatalytic activity of the CNTi nanocomposites was significantly higher than that of TiO2 nanoparticles. Additionally, spectrophotometry and TOC analyses confirmed that degraded phenol was completely mineralized to CO2 and H2O with the use of CNTi nanocomposites, which was not the case for TiO2 where several intermediates were formed. Furthermore, when H2O2 and O3 were simultaneously present, the 0.1% g-C3N4/TiO2 nanocomposite showed the highest phenol degradation rate and the degradation percentage was greater than 91.4% within 30 min.

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Titanium dioxide and cadmium sulfide co-sensitized graphitic carbon nitride nanosheets composite photocatalysts with superior performance in phenol degradation under visible-light irradiation

Cited by 70 publications

References 47 publications

An application‐oriented roadmap to select polymeric nanocomposites for advanced applications: A review

An application‐oriented roadmap to select polymeric nanocomposites for advanced applications: A review

Toward an Accurate Spectrophotometric Evaluation of the Efficiencies of Photocatalysts in Processes Involving Their Separation Using Nylon Membranes

An efficient eco advanced oxidation process for phenol mineralization using a 2D/3D nanocomposite photocatalyst and visible light irradiations

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