Suitable energy platform significantly improves charge separation of g-C3N4 for CO2 reduction and pollutant oxidation under visible-light

Zada, Amir; Ali, Nauman; Subhan, Fazle; Anwar, Natasha; Shah, Muhammad; Ateeq, Muhammad; Hussain, Zahid; Zaman, Khair; Khan, Momin

doi:10.1016/j.pnsc.2019.03.004

Cited by 76 publications

(28 citation statements)

References 49 publications

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“…100,101 Thus, complex materials that fulfill these three properties (low dielectric loss, low Young's modulus, and high dielectric permittivity) are difficult to achieve and therefore compromise among them will improve properties. 224 Sub-percolative approach, elastomer composites/ conductive filler The systems consist of conductive polymer/fillers demonstrate a non-linear increase in electric conductivity and permittivity as the concentration increases from the percolation threshold. According to the theory of percolation, [99][100][101][102] when the concentration of the fillers is low, the conducting units are far away from each other and the electrical properties of the composite material are still dominated by the matrix.…”

Section: Composites Of Elastomermentioning

confidence: 99%

Retracted: A concise review on the elastomeric behavior of electroactive polymer materials

Khan

Hayat

et al. 2021

Intl J of Energy Research

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In recent 20 years, electronic equipment has been developing rapidly in the direction of light, miniaturization, flexibility, and integration. It is urgent to meet the needs of matching energy supply system to solve the practical application requirements in the fields of intelligent communication and mobile medical treatment. Electroactive polymers (EAPs) are recommendable material for manifesting muscle-like actuation. The dielectric elastomers (DEs) obtained from the EAPs are quite capable of inducing electrical energy and transmute it into mechanical energy. DEs are capacitors covered by an outer elastic membrane, sandwiched between the two docile electrodes. In the beginning, for getting the efficient responses out of the DE actuators, the material requirements and electromechanical principal are applied. Viscoelastic damping, low dielectric loss, stretch ability, and dielectric permittivity are the desirable characteristics that we are expecting in a polymer. In the current research, we are going to adopt the sequential approach by describing the advances, challenges, and applications of DEAs in the coming future.

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Section: Composites Of Elastomermentioning

confidence: 99%

Retracted: A concise review on the elastomeric behavior of electroactive polymer materials

Khan

Hayat

et al. 2021

Intl J of Energy Research

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“…Graphitic carbon nitride (g-C 3 N 4 ), a polymeric semiconductor with a layered structure, is drawing considerable attention in the field of photocatalysis because of its easy synthesis, elemental abundance, high chemical and thermal stabilities, and appealing electronic structure. , However, the CO 2 conversion activity of pristine g-C 3 N 4 is limited by its inadequate visible light utilization owing to the moderate band gap (∼2.7 eV) and rapid recombination of photoexcited charge carriers . Multiple efforts have been made to improve the catalytic performance of g-C 3 N 4 , including metal doping, creating textural porosity, noble metal deposition, and coupling with another semiconductor. ,− Among all the strategies, coupling g-C 3 N 4 with another semiconductor with a suitable band structure to form a heterojunction has proven to be an effective alternative to enhance the separation of photogenerated electron–hole pairs.…”

Section: Introductionmentioning

confidence: 99%

Artificial Trees for Artificial Photosynthesis: Construction of Dendrite-Structured α-Fe₂O₃/g-C₃N₄ Z-Scheme System for Efficient CO₂ Reduction into Solar Fuels

Shen

Han

et al. 2020

ACS Appl. Energy Mater.

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A direct all-solid-state Z-scheme heterojunction photocatalyst of a g-C3N4-coated tree-like α-Fe2O3 was rationally constructed toward CO2 conversion. The so-called artificial tree shows excellent performance and stability for CO production (17.8 μmol g–1 h–1), almost 3 times that of pristine g-C3N4. Density functional theory computations explain the intrinsic cause for the formation of the Z-scheme structure. The enhanced photocatalytic performance can be attributed to a synergistic effect of the following factors: (1) the combination of α-Fe2O3 with g-C3N4 helps to promote light harvesting and CO2 adsorption; (2) the hybridization effectively enhances the spatial separation of photogenerated electrons and holes, suppressing the undesirable recombination of charge carriers; (3) the dendritic structure of α-Fe2O3 provides ample active sites with considerable steps, edges, and kinks along the twigs, and meanwhile, the exposed (001) facet with high electron conduction facilitates photoelectrons’ transportation to the interface. This work provides new insight into constructing Z-scheme photocatalysts for CO2 conversion.

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“…As can be seen, g-C 3 N 4 and SnO 2 , respectively, show optical thresholds at 475 and 360 nm, corresponding to band gaps of 2.61 and 3.45 eV, respectively. Although the composite samples show the same optical thresholds at 475 and 360 nm, their light absorption has been slightly decreased as SnO 2 is a wide-band-gap semiconductor and its coupling with g-C 3 N 4 slightly decreases light absorption Zada et al, 2019a;Zhu et al, 2019a,b).…”

Section: Structural Characterizationmentioning

confidence: 95%

Accelerating Photocatalytic Hydrogen Production and Pollutant Degradation by Functionalizing g-C3N4 With SnO2

et al. 2020

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Energy crises and environmental pollution are two serious threats to modern society. To overcome these problems, graphitic carbon nitride (g-C 3 N 4 ) nanosheets were fabricated and functionalized with SnO 2 nanoparticles to produce H 2 from water splitting and degrade 2-chlorophenol under visible light irradiation. The fabricated samples showed enhanced photocatalytic activities for both H 2 evolution and pollutant degradation as compared to bare g-C 3 N 4 and SnO 2 . These enhanced photoactivities are attributed to the fast charge separation as the excited electrons transfer from g-C 3 N 4 to the conduction band of SnO 2 . This enhanced charge separation has been confirmed by the photoluminescence spectra, steady state surface photovoltage spectroscopic measurement, and formed hydroxyl radicals. It is believed that this work will provide a feasible route to synthesize photocatalysts for improved energy production and environmental purification.

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Suitable energy platform significantly improves charge separation of g-C3N4 for CO2 reduction and pollutant oxidation under visible-light

Cited by 76 publications

References 49 publications

Retracted: A concise review on the elastomeric behavior of electroactive polymer materials

Retracted: A concise review on the elastomeric behavior of electroactive polymer materials

Artificial Trees for Artificial Photosynthesis: Construction of Dendrite-Structured α-Fe₂O₃/g-C₃N₄ Z-Scheme System for Efficient CO₂ Reduction into Solar Fuels

Accelerating Photocatalytic Hydrogen Production and Pollutant Degradation by Functionalizing g-C3N4 With SnO2

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Suitable energy platform significantly improves charge separation of g-C3N4 for CO2 reduction and pollutant oxidation under visible-light

Cited by 76 publications

References 49 publications

Retracted: A concise review on the elastomeric behavior of electroactive polymer materials

Retracted: A concise review on the elastomeric behavior of electroactive polymer materials

Artificial Trees for Artificial Photosynthesis: Construction of Dendrite-Structured α-Fe2O3/g-C3N4 Z-Scheme System for Efficient CO2 Reduction into Solar Fuels

Accelerating Photocatalytic Hydrogen Production and Pollutant Degradation by Functionalizing g-C3N4 With SnO2

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Product

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Artificial Trees for Artificial Photosynthesis: Construction of Dendrite-Structured α-Fe₂O₃/g-C₃N₄ Z-Scheme System for Efficient CO₂ Reduction into Solar Fuels