Integration of g-C3N4 into cellulose/graphene oxide foams for efficient photocatalytic Cr(VI) reduction

Hao, Dandan; Liu, Ju; Sun, Huiwen; Fu, Bo; Liu, Jingyin; Zhou, Jiancheng

doi:10.1016/j.jpcs.2022.110813

Cited by 11 publications

(2 citation statements)

References 40 publications

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“…For MB, the treatment methods include adsorption [8,9], membrane separation and photocatalytic oxidation [10,11]. For Cr(VI), adsorption [12,13], chemical coagulation, ion exchange and photocatalysis [14,15] are the mainstream methods. Thus, the common methods to treat both MB and Cr(VI) are adsorption and photocatalytic oxidation, but the utilization rate of sunlight in photocatalytic oxidation is too low at present, and the applied conditions are limited.…”

Section: Introductionmentioning

confidence: 99%

Behaviors and Mechanisms of Adsorption of MB and Cr(VI) by Geopolymer Microspheres under Single and Binary Systems

Fang,

Yang,

Rao

et al. 2024

Molecules

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Geopolymers show great potential in complex wastewater treatment to improve water quality. In this work, general geopolymers, porous geopolymers and geopolymer microspheres were prepared by the suspension curing method using three solid waste products, coal gangue, fly ash and blast furnace slag. The microstructure, morphology and surface functional groups of the geopolymers were studied by SEM, XRD, XRF, MIP, FTIR and XPS. It was found that the geopolymers possess good adsorption capacities for both organic and inorganic pollutants. With methylene blue and potassium dichromate as the representative pollutants, in order to obtain the best removal rate, the effects of the adsorbent type, dosage of adsorbent, concentration of methylene blue and potassium dichromate and pH on the adsorption process were studied in detail. The results showed that the adsorption efficiency of the geopolymers for methylene blue and potassium dichromate was in the order of general geopolymers < porous geopolymers < geopolymer microspheres, and the removal rates were up to 94.56% and 79.46%, respectively. Additionally, the competitive adsorption of methylene blue and potassium dichromate in a binary system was also studied. The mechanism study showed that the adsorption of methylene blue was mainly through pore diffusion, hydrogen bond formation and electrostatic adsorption, and the adsorption of potassium dichromate was mainly through pore diffusion and redox reaction. These findings demonstrate the potential of geopolymer microspheres in adsorbing organic and inorganic pollutants, and, through five cycles of experiments, it is demonstrated that MGP exhibits excellent recyclability.

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Section: Introductionmentioning

confidence: 99%

Behaviors and Mechanisms of Adsorption of MB and Cr(VI) by Geopolymer Microspheres under Single and Binary Systems

Fang,

Yang,

Rao

et al. 2024

Molecules

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“…Another important strategy to improve the photocatalytic efficiency of g-C 3 N 4 is the formation of g-C 3 N 4 -based binary and ternary heterostructure composites, including doping/loading with noble metals and creating heterojunctions with other organic and inorganic semiconductors [ 15 , 28 ]. Recently, for example, various heterostructure composites, such as Ag/g-C 3 N 4 [ 29 , 30 , 31 ], Au/g-C 3 N 4 [ 31 , 32 , 33 ], graphene oxide/g-C 3 N 4 [ 34 , 35 , 36 , 37 ], TiO 2 /g-C 3 N 4 [ 38 , 39 , 40 , 41 , 42 ], Ag/TiO 2 /g-C 3 N 4 [ 43 , 44 , 45 ], TiO 2 /Cu/g-C 3 N 4 [ 46 ], TiO 2 /ZrO 2 /g-C 3 N 4 [ 47 ], and Bi 2 WO 6 /g-C 3 N 4 /TiO 2 [ 48 ] have been successfully prepared, to optimize the optical properties of g-C 3 N 4 and significantly improve its overall photocatalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Emerging and Promising Multifunctional Nanomaterial for Textile Application Based on Graphitic Carbon Nitride Heterostructure Nanocomposites

et al. 2023

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Nanocomposites constructed with heterostructures of graphitic carbon nitride (g-C3N4), silver (Ag), and titanium dioxide (TiO2) have emerged as promising nanomaterials for various environmental, energy, and clinical applications. In the field of textiles, Ag and TiO2 are already recognized as essential nanomaterials for the chemical surface and bulk modification of various textile materials, but the application of composites with g-C3N4 as a green and visible-light-active photocatalyst has not yet been fully established. This review provides an overview of the construction of Ag/g-C3N4, TiO2/g-C3N4, and Ag/TiO2/g-C3N4 heterostructures; the mechanisms of their photocatalytic activity; and the application of photocatalytic textile platforms in the photochemical activation of organic synthesis, energy generation, and the removal of various organic pollutants from water. Future prospects for the functionalization of textiles using g-C3N4-containing heterostructures with Ag and TiO2 are highlighted.

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3D Graphene for Removal of Inorganic Pollutants

Fareed,

Khan,

Rehman

et al. 2023

Carbon Nanostructures

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Integration of g-C3N4 into cellulose/graphene oxide foams for efficient photocatalytic Cr(VI) reduction

Cited by 11 publications

References 40 publications

Behaviors and Mechanisms of Adsorption of MB and Cr(VI) by Geopolymer Microspheres under Single and Binary Systems

Behaviors and Mechanisms of Adsorption of MB and Cr(VI) by Geopolymer Microspheres under Single and Binary Systems

Emerging and Promising Multifunctional Nanomaterial for Textile Application Based on Graphitic Carbon Nitride Heterostructure Nanocomposites

3D Graphene for Removal of Inorganic Pollutants

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