Synthesis of graphitic carbon nitride-based photocatalysts for hydrogen evolution under visible light

Zhurenok, Angelina V.; Ларина, Т. В.; Markovskaya, Dina V.; Cherepanova, Svetlana V.; Mel’gunova, Elena A.; Kozlova, Ekaterina A.

doi:10.1016/j.mencom.2021.03.004

Cited by 21 publications

(7 citation statements)

References 18 publications

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“…The lamellar structures loosely agglomerate between each other, resulting in microsized g-C3N4 particles of irregular shapes. The XRD pattern of the g-C3N4 is characterized by the dominant diffraction peak located at 2θ~27.5° and the second peak of lower intensity located at 2θ~13.1° [ 28 ]. The representative XRD patterns of the g-C3N4 produced from melamine (g-C3N4 (M)) and dicyandiamide (g-C3N4 (D)) are shown in Figure 5 c. The dominant diffraction peak can be assigned to the (002) plane and characterizes the distance between the parallel conjugated aromatic C-N 2D layers, whereas the second diffraction peak can be attributed to the (100) diffraction plane and characterizes the distance between the tri-s-triazine units within the 2D C-N layer.…”

Section: Properties Of G-c 3 Nmentioning

confidence: 99%

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Graphitic Carbon Nitride as a New Sustainable Photocatalyst for Textile Functionalization

2021

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As a promising organic semiconducting material, polymeric graphitic carbon nitride (g-C3N4) has attracted much attention due to its excellent optical and photoelectrochemical properties, thermal stability, chemical inertness, nontoxicity, abundance, and low cost. Its advantageous visible light-induced photocatalytic activity has already been beneficially used in the fields of environmental remediation, biological applications, healthcare, energy conversion and storage, and fuel production. Despite the recognized potential of g-C3N4, there is still a knowledge gap in the application of g-C3N4 in the field of textiles, with no published reviews on the g-C3N4- functionalization of textile materials. Therefore, this review article aims to provide a critical overview of recent advances in the surface and bulk modification of textile fibres by g-C3N4 and its composites to tailor photocatalytic self-cleaning, antibacterial, and flame retardant properties as well as to create a textile catalytic platform for water disinfection, the removal of various organic pollutants from water, and selective organic transformations. This paper highlights the possibilities of producing g-C3N4-functionalized textile substrates and suggests some future prospects for this research area.

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Section: Properties Of G-c 3 Nmentioning

confidence: 99%

“…( c ) XRD patterns of g-C 3 N 4 (M) and g-C 3 N 4 (D) prepared from melamine and dicyandiamide, respectively. Reprinted with permission from [ 28 ], Copyright 2021, Elsevier. ( d ) UV-vis spectra of the g-C 3 N 4 and melon with the corresponding photographs of the powdery samples used for this measurement.…”

Section: Figurementioning

confidence: 99%

Graphitic Carbon Nitride as a New Sustainable Photocatalyst for Textile Functionalization

2021

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“…In general, platinization of the photocatalyst was carried out by the method described elsewhere. 35 The photocatalyst was impregnated by hexachloroplatinic acid solution (0.1 M); aer that the 2.5-fold excess of sodium borohydride was added. The mixture was stirred during 20 min, then the precipitate was collected, washed out by distilled water and dried at 50 C. The obtained samples were marked as Pt-yCd(1 À x)-P25, e.g.…”

Section: Photocatalyst Preparationmentioning

confidence: 99%

Composite photocatalysts based on Cd_1−xZn_xS and TiO₂ for hydrogen production under visible light: effect of platinum co-catalyst location

et al. 2021

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“…Melamine was chosen as a precursor. Usually, 2 g of the precursor was annealed in a ceramic crucible with a lid at 600 • C with a heating rate of 5 • C/min for 2 h [8]. The obtained g-C 3 N 4 was ground in a mortar to a yellow powder.…”

Section: Photocatalyst Synthesismentioning

confidence: 99%

“…These properties make g-C 3 N 4 an ideal semiconductor for photocatalytic hydrogen production, CO 2 reduction, and solar-cell applications [5][6][7]. However, quantum efficiency in the photocatalytic hydrogen production over pristine g-C 3 N 4 is quite low [8].…”

Section: Introductionmentioning

confidence: 99%

Constructing g-C3N4/Cd1−xZnxS-Based Heterostructures for Efficient Hydrogen Production under Visible Light

et al. 2021

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Two types of photocatalysts, 1%Pt/Cd1−xZnxS/g-C3N4 (x = 0.2–0.3) and Cd1−xZnxS/1%Pt/g-C3N4 (x = 0.2–0.3), were synthesized by varying the deposition order of platinum, and a solid solution of cadmium and zinc sulfides onto the surface of g-C3N4. The characterization of photocatalysts showed that, for 1%Pt/Cd1−xZnxS/g-C3N4, small platinum particles were deposited onto a solid solution of cadmium and zinc sulfides; in the case of Cd1−xZnxS/1%Pt/g-C3N4, enlarged platinum clusters were located on the surface of graphitic carbon nitride. Based on the structure of the photocatalysts, we assumed that, in the first case, type II heterojunctions and, in the latter case, S-scheme heterojunctions were realized. The activity of the synthesized samples was tested in hydrogen evolution from triethanolamine (TEOA) basic solution under visible light (λ = 450 nm). A remarkable increase in hydrogen evolution rate compared to single-phase platinized 1%Pt/Cd1−xZnxS photocatalysts was observed only in the case of ternary photocatalysts with platinum located on the g-C3N4 surface, Cd1−xZnxS/1%Pt/g-C3N4. Thus, we proved using kinetic experiments and characterization techniques that, for composite photocatalysts based on Cd1−xZnxS and g-C3N4, the formation of the S-scheme mechanism is more favorable than that for type II heterojunction. The highest activity, 2.5 mmol H2 g−1 h−1, with an apparent quantum efficiency equal to 6.0% at a wavelength of 450 nm was achieved by sample 20% Cd0.8Zn0.2S/1% Pt/g-C3N4.

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Synthesis of graphitic carbon nitride-based photocatalysts for hydrogen evolution under visible light

Cited by 21 publications

References 18 publications

Graphitic Carbon Nitride as a New Sustainable Photocatalyst for Textile Functionalization

Graphitic Carbon Nitride as a New Sustainable Photocatalyst for Textile Functionalization

Composite photocatalysts based on Cd_1−xZn_xS and TiO₂ for hydrogen production under visible light: effect of platinum co-catalyst location

Constructing g-C3N4/Cd1−xZnxS-Based Heterostructures for Efficient Hydrogen Production under Visible Light

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Synthesis of graphitic carbon nitride-based photocatalysts for hydrogen evolution under visible light

Cited by 21 publications

References 18 publications

Graphitic Carbon Nitride as a New Sustainable Photocatalyst for Textile Functionalization

Graphitic Carbon Nitride as a New Sustainable Photocatalyst for Textile Functionalization

Composite photocatalysts based on Cd1−xZnxS and TiO2 for hydrogen production under visible light: effect of platinum co-catalyst location

Constructing g-C3N4/Cd1−xZnxS-Based Heterostructures for Efficient Hydrogen Production under Visible Light

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Composite photocatalysts based on Cd_1−xZn_xS and TiO₂ for hydrogen production under visible light: effect of platinum co-catalyst location