New insights into the efficient charge transfer of ternary chalcogenides composites of TiO2

Ganguly, Priyanka; Kumar, Ravindra; Muscetta, Marica; Padmanabhan, Nisha T.; Clarizia, Laura; Akande, Akinlolu; Hinder, Steven J.; Mathew, Snehamol; John, Honey; Breen, Ailish; Pillai, Suresh C.

doi:10.1016/j.apcatb.2020.119612

Cited by 42 publications

(15 citation statements)

References 65 publications

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“…Calculating product yield rates could be used to compare the performance of catalysts and reactors, but since different catalyst loading and light intensity are used in photocatalytic reaction systems, this is not an acceptable method. As a result, estimating the quantum yield (QY) of various reactors and catalysts is the best approach 46 . The QY can be determined using the number of electrons conducted during the photocatalysis process to produce CO or H 2 , as demonstrated in Equation ().

QY (() %) goodbreak= \frac{n \times production rate ((), μmol / normals)}{photon flux ((), μmol / normals)} goodbreak\times 100 .

The light intensity of 20 mW cm −2 and a wavelength of 420 nm were employed as the source of power over an incident area of 25 cm 2 .…”

Section: Resultsmentioning

confidence: 99%

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Fabricating V ₂ AlC / g‐C ₃ N ₄ nanocomposite with MAX as electron moderator for promoting photocatalytic CO ₂ ‐CH ₄ ref

Madi

Tahir

2022

Intl J of Energy Research

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Summary Exfoliated vanadium aluminum carbide (V2AlC) MAX nanosheets coupled with porous graphitic carbon nitride to construct 2D/2D V2AlC MAX/g‐C3N4 heterojunction for photocatalytic CO2 reduction through dry reforming of methane has been investigated. Good interfacial interaction was achieved which enabled proficient charge carrier separation with promoted light absorption. The optimized 10 wt%V2AlC MAX/g‐C3N4 was more proficient with CO and H2 evolution rates of 118.74 and 89.52 μmole g−1 h‐1 at selectivity 57.01 and 42.98%, respectively. This efficiency for CO and H2 evolution rate was 2.21‐ and 1.99‐folds superior to using pure g‐C3N4. This improvement is due to good interfacial contact and efficient charge carrier separation by MAX, which increases photo‐induced charge carrier lifetime. The performance was further investigated with different reforming systems to manipulate the effective utilization of holes to extend charges recombination rate. Using CO2 reduction with hydrogen, CO2 methanation and the reverse water‐gas shift reaction were activated, whereas CO2 with water promoted more methane formation. By investigating CH4/CO2 feed ratios, the highest yield rates attained with the ratio of 1:0, confirming V2AlC based‐composite effectively activates both gases as evidenced by their apparent quantum yields. This study provides a promising route for the fabrication of noble‐metal‐free nanocomposite and will be useful for future energy and environmental applications.

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QY (() %) goodbreak= \frac{n \times production rate ((), μmol / normals)}{photon flux ((), μmol / normals)} goodbreak\times 100 .

The light intensity of 20 mW cm −2 and a wavelength of 420 nm were employed as the source of power over an incident area of 25 cm 2 .…”

Section: Resultsmentioning

confidence: 99%

“…As a result, estimating the quantum yield (QY) of various reactors and catalysts is the best approach. 46 The QY can be determined using the number of electrons conducted during the photocatalysis process to produce CO or H 2 , as demonstrated in Equation (13).…”

Section: Quantum Yield Analysismentioning

confidence: 99%

Fabricating V ₂ AlC / g‐C ₃ N ₄ nanocomposite with MAX as electron moderator for promoting photocatalytic CO ₂ ‐CH ₄ ref

Madi

Tahir

2022

Intl J of Energy Research

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“…5f), further indicating the successful modification of metal Ag nanoparticles in the Ag/Cu-TS-1 catalyst. 34,35 Fig. 3 a and b) SEM image and the corresponding EDX spectrum of the cross-section of Ag/Cu-TS-1.…”

Section: Catalysis Science and Technology Papermentioning

confidence: 99%

Light-driven carbon dioxide reduction over the Ag-decorated modified TS-1 zeolite

Wang

Shao

et al. 2022

Catal. Sci. Technol.

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“…Since titanium dioxide (TiO 2 ) was first used in the electrochemical photolysis of water in 1972, researchers have developed a strong interest in TiO 2 [ 1 , 2 , 3 , 4 ]. TiO 2 exhibits rich physical and chemical properties such as non-toxicity, high corrosion resistance, biocompatibility, and unique optoelectronic properties, allowing it to maintain good competitiveness in photocatalysis, sensors, dye-sensitized solar cells, and electrochemical energy storage, etc.…”

Section: Introductionmentioning

confidence: 99%

Highly Ordered TiO2 Nanotube Arrays with Engineered Electrochemical Energy Storage Performances

2021

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Nanoscale engineering of regular structured materials is immensely demanded in various scientific areas. In this work, vertically oriented TiO2 nanotube arrays were grown by self-organizing electrochemical anodization. The effects of different fluoride ion concentrations (0.2 and 0.5 wt% NH4F) and different anodization times (2, 5, 10 and 20 h) on the morphology of nanotubes were systematically studied in an organic electrolyte (glycol). The growth mechanisms of amorphous and anatase TiO2 nanotubes were also studied. Under optimized conditions, we obtained TiO2 nanotubes with tube diameters of 70–160 nm and tube lengths of 6.5–45 μm. Serving as free-standing and binder-free electrodes, the kinetic, capacity, and stability performances of TiO2 nanotubes were tested as lithium-ion battery anodes. This work provides a facile strategy for constructing self-organized materials with optimized functionalities for applications.

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New insights into the efficient charge transfer of ternary chalcogenides composites of TiO2

Cited by 42 publications

References 65 publications

Fabricating V ₂ AlC / g‐C ₃ N ₄ nanocomposite with MAX as electron moderator for promoting photocatalytic CO ₂ ‐CH ₄ ref

Fabricating V ₂ AlC / g‐C ₃ N ₄ nanocomposite with MAX as electron moderator for promoting photocatalytic CO ₂ ‐CH ₄ ref

Light-driven carbon dioxide reduction over the Ag-decorated modified TS-1 zeolite

Highly Ordered TiO2 Nanotube Arrays with Engineered Electrochemical Energy Storage Performances

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New insights into the efficient charge transfer of ternary chalcogenides composites of TiO2

Cited by 42 publications

References 65 publications

Fabricating V 2 AlC / g‐C 3 N 4 nanocomposite with MAX as electron moderator for promoting photocatalytic CO 2 ‐CH 4 ref

Fabricating V 2 AlC / g‐C 3 N 4 nanocomposite with MAX as electron moderator for promoting photocatalytic CO 2 ‐CH 4 ref

Light-driven carbon dioxide reduction over the Ag-decorated modified TS-1 zeolite

Highly Ordered TiO2 Nanotube Arrays with Engineered Electrochemical Energy Storage Performances

Contact Info

Product

Resources

About

Fabricating V ₂ AlC / g‐C ₃ N ₄ nanocomposite with MAX as electron moderator for promoting photocatalytic CO ₂ ‐CH ₄ ref

Fabricating V ₂ AlC / g‐C ₃ N ₄ nanocomposite with MAX as electron moderator for promoting photocatalytic CO ₂ ‐CH ₄ ref