Photocatalytic CO2 reduction over g-C3N4 based heterostructures: Recent progress and prospects

Ghosh, Utpal; Majumdar, Ankush; Pal, Anjali

doi:10.1016/j.jece.2020.104631

Cited by 85 publications

(28 citation statements)

References 151 publications

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“…Also, CNBB maintained the photocatalytic activity after five test cycles in the CO 2 reduction reaction as shown in Figure S5. , The apparent quantum efficiency (AQE) of CN, BiOCl, CNB, and CNBB is then studied as shown in Figure S6. The AQE of CNBB is 0.42% under 400 nm incident monochromatic light and shows the highest solar utilization efficiency in all the samples. − …”

Section: Resultsmentioning

confidence: 94%

2D Bismuthene Metal Electron Mediator Engineering Super Interfacial Charge Transfer for Efficient Photocatalytic Reduction of Carbon Dioxide

Zhang

Cui

Liu

et al. 2021

ACS Appl. Mater. Interfaces

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The interfacial charge transfer still limits the photoactivity of artificial Z-scheme photocatalysts although they showed complementary light absorption and a strong photoredox ability. In this study, layered metallene is designed as an efficient electron mediator for constructing a C3N4/bismuthene/BiOCl 2D/2D/2D Z-scheme system. This bismuthene serves as a bridge processing superior charge conductibility, abundant metal–semiconductor contact sites, and the shortened charge diffusion distance, enhancing the photocatalytic CO2 reduction reaction activity and stability. Density functional theory calculations show that the bismuthene creates a built-in electric field and congregates interfacial electrons, which is confirmed by the stable and consistent emission of the ultrafast transient absorption spectra. This work gives new insight into the interface design of Z-scheme photocatalysts by selecting a novel metallene electron mediator.

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Section: Resultsmentioning

confidence: 94%

2D Bismuthene Metal Electron Mediator Engineering Super Interfacial Charge Transfer for Efficient Photocatalytic Reduction of Carbon Dioxide

Zhang

Cui

Liu

et al. 2021

ACS Appl. Mater. Interfaces

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“…As we know, graphite carbon nitride (g-C 3 N 4 ) has received wide attention due to its low cost, suitable band gap, high thermal and chemical stability, and controllable structure and morphology. [15] It has been confirmed that g-C 3 N 4 exhibits excellent performances in the CO 2 reduction, [16] photodegradation of organic pollutants [17] andphotolysis of water to hydrogen. [18] The g-C 3 N 4 material is metal-free layered polymer semiconductorand it has strong visible-light adsorption ability.…”

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confidence: 84%

Facile Preparation of Hierarchically Porous g‐C₃N₄ as High‐Performance Photocatalyst for Degradation of Methyl Violet Dye

Wang

Liang

et al. 2021

ChemistrySelect

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Porous Graphitic carbon nitride(pg-C 3 N 4 ) possessing hierarchical pores and lamellar nanostrucutres was synthesized in the absent of templates by pyrolysis of the solution-assisted mixing dual-precursors. The samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, N 2 porosimeter, X-ray photoelectron spectroscopy, UV-Vis andphotoluminescence spectroscopy.The photocatalytic activities of as-prepared materials for degradation of methyl violet were studied. The results show that the as-prepared g-C 3 N 4 consists of well-dispersed layers with uniform sizeand hierarchical (Meso/Macro) pores in the nanosheets, which favor photogenerated electron-hole pairs'separation, and the degradation of methyl violet conforms to the quasi-first-order kinetic model. The porous g-C 3 N 4 synthesized by optimizing precursors' ratios exhibited faster degradation rate than g-CN material in the process of photocatalyzing methyl violet andthe degradation rate was over 93 % after irradiation of 180 min, implying that the as-prepared hierarchically porous g-C 3 N 4 is a high-effective and metal-free photocatalytic material for degradation of pollutants.

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“…Due to the immense interest in graphitic carbon nitride‐based catalysts for energy and environmental science, there has been a surge in publications on this topic. There has also been a myriad of reviews based on the utilization of g‐C 3 N 4 for general photocatalytic applications, 47–52 with its participation in the CO 2 RR being the sole discussion for some 53–55 . Based on our previous work on point‐defect engineering of carbon nitrides, 56 the material itself has been found to be an excellent base for further modifications to fine‐tune its surface properties.…”

Section: Introductionmentioning

confidence: 99%

Solar‐powered chemistry: Engineering low‐dimensional carbon nitride‐based nanostructures for selective CO₂ conversion to C₁C₂ products

Foo

Ong

2022

InfoMat

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CO2 capture and conversion has been prospected as an auspicious technology to simultaneously tackle the rise in global CO2 emission and produce value‐added fuels with the goal of accomplishing carbon neutrality. A sustainable route to achieve this is via the utilization of solar energy, thereby harnessing the abundant and nonexhaustive resource to shift our reliance away from rapidly depleting fossil fuels. Graphitic carbon nitride (g‐C3N4) and its allotrope have earned its rank as a fascinating metal‐free photocatalyst due to its superior stability, high surface‐area‐to‐volume ratio, and tunable surface engineering. By leveraging these properties, robust carbon nitride‐based nanostructures are engineered for photocatalytic CO2 conversion to energy‐rich C1C2 product, which is indispensable in the chemical industry. Thus, this review presents the latest panorama of experimental and computational research on tuning the local electronic, surface chemical coordination environment, charge dynamics and optical properties of low‐dimensional carbon nitride and its allotropes toward highly selective and efficient CO2 photoconversion. To name a few, structural engineering, point‐defect engineering, heterojunction construction, and cocatalyst loading. To advance this frontier, critical insights are elucidated to establish the structure‐performance relationship and unravel primary factors dictating the selectivity of C1C2 molecules from CO2 reduction. External‐field assisted photocatalysis such as with electric (photoelectro‐) and heat (photothermal) is discussed to uncover the synergistic contributions that drive the development in photochemistry. Last, future challenges and prospects are outlined for the potential application of solar‐driven CO2 conversion, along with the scale‐up strategy from the economic viewpoint toward the rational development of high‐efficiency carbon nitride catalysts.

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Photocatalytic CO2 reduction over g-C3N4 based heterostructures: Recent progress and prospects

Cited by 85 publications

References 151 publications

2D Bismuthene Metal Electron Mediator Engineering Super Interfacial Charge Transfer for Efficient Photocatalytic Reduction of Carbon Dioxide

2D Bismuthene Metal Electron Mediator Engineering Super Interfacial Charge Transfer for Efficient Photocatalytic Reduction of Carbon Dioxide

Facile Preparation of Hierarchically Porous g‐C₃N₄ as High‐Performance Photocatalyst for Degradation of Methyl Violet Dye

Solar‐powered chemistry: Engineering low‐dimensional carbon nitride‐based nanostructures for selective CO₂ conversion to C₁C₂ products

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Photocatalytic CO2 reduction over g-C3N4 based heterostructures: Recent progress and prospects

Cited by 85 publications

References 151 publications

2D Bismuthene Metal Electron Mediator Engineering Super Interfacial Charge Transfer for Efficient Photocatalytic Reduction of Carbon Dioxide

2D Bismuthene Metal Electron Mediator Engineering Super Interfacial Charge Transfer for Efficient Photocatalytic Reduction of Carbon Dioxide

Facile Preparation of Hierarchically Porous g‐C3N4 as High‐Performance Photocatalyst for Degradation of Methyl Violet Dye

Solar‐powered chemistry: Engineering low‐dimensional carbon nitride‐based nanostructures for selective CO2 conversion to C1C2 products

Contact Info

Product

Resources

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Facile Preparation of Hierarchically Porous g‐C₃N₄ as High‐Performance Photocatalyst for Degradation of Methyl Violet Dye

Solar‐powered chemistry: Engineering low‐dimensional carbon nitride‐based nanostructures for selective CO₂ conversion to C₁C₂ products