Tunable type-I/type-II transition in g-C3N4/graphyne heterostructure by BN-doping: A promising photocatalyst

Yun, Jiangni; Zhang, Yanni; Ren, Yanbing; Peng, Kang; Yan, Junfeng; Zhao, Wenguang; Zhang, Zhiyong; Guo, Hong

doi:10.1016/j.solmat.2020.110516

Cited by 30 publications

(10 citation statements)

References 77 publications

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“…The LUMO potential of the terpolymers were more positive than that of g‐C 3 N 4 , while the HOMO potentials of the terpolymers were more negative than that of g‐C 3 N 4 ; thus, these two semiconductors constructed the type I heterojunction. [ 43 ] It was worth noting that the energy difference existed between these two semiconductors, thus free electrons and holes transferred from g‐C 3 N 4 to DIn ( n = 1, 2, 3) with different migration rate and distance, leading to the enhancement of the charge separation efficiency. Further, the g‐C 3 N 4 /DI1 can enhance the electron transfer as the suitable energy level difference, thus reducing charge–hole pairs recombination.…”

Section: Resultsmentioning

confidence: 99%

Synergetic Effects of Random Copolymerization/Backbone Fluorination and Heterojunction of Terpolymer/g‐C₃N₄ Enhance Photocatalytic Hydrogen Evolution

Jiao

Wang

et al. 2022

Solar RRL

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In the field of photocatalytic hydrogen evolution, most polymer heterojunctions (PHJs) exhibit an unsatisfactory hydrogen evolution rate due to the decay of undissociated excitons, charge recombination, and weak light capture capacity. Herein, the design and synthesis of a series of D–A1–D–A2‐type random conjugated terpolymers (DIn, n = 1, 2, 3) are reported by copolymerizing fluorinated 2,2′‐bithiophene with different proportions of diketopyrrolopyrrole (DPP) and isoindigo (IID) for efficient vis‐light‐driven hydrogen evolution. Notably, the ternary copolymerization and fluorination strategy in the polymer backbone would enhance the intramolecular interactions and rebuild the extended π‐network over the polymeric heterojunction, which achieve broad and strong absorption ranging from 350 to 900 nm and a better effective photoexcitation separation, thus leading to a significantly increased hydrogen evolution reaction (HER) of 16.01 mmol h−1 g−1, via simply tuning the composition of DPP and IID units in the backbone of random terpolymers. The HER performance is almost 20 times higher than that of the typical g‐C3N4. This work offers a new strategy to develop efficient visible‐light‐driven photocatalysts via ternary copolymerization and backbone fluorination strategy of terpolymer/g‐C3N4 PHJs for broadband solar photon harvesting.

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Section: Resultsmentioning

confidence: 99%

Synergetic Effects of Random Copolymerization/Backbone Fluorination and Heterojunction of Terpolymer/g‐C₃N₄ Enhance Photocatalytic Hydrogen Evolution

Jiao

Wang

et al. 2022

Solar RRL

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“…The circumstance is similar to the case of the g-C 3 N 4 /2BN-Gyne. 73 Therefore, the valence band top and conduction band bottom originate from the different parts in the g-C 3 N 4 /BiOI (001), and a staggered projected band structure is presented. This is very expected for the applications of photocatalysis.…”

Section: Geometric Structural Model Of G-c 3 N 4 /Bioi(001) Heterojun...mentioning

confidence: 99%

Evidence of direct Z-scheme triazine-based g-C₃N₄/BiOI (001) heterostructures: a hybrid density functional investigation

Liu

Wang

Kong

et al. 2023

Phys. Chem. Chem. Phys.

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“…In particular, metalfree GFM-based photocatalysts are attracting increasing interest since they have been described as extremely efficient in both computational. [27][28][29][30] But also in and experimental studies, as detailed in this review. [31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46] Theoretical studies reveal that GFM materials have electronic and optical properties similar to or superior to graphene.…”

Section: Doi: 101002/advs202003900mentioning

confidence: 99%

Advances on Graphyne‐Family Members for Superior Photocatalytic Behavior

et al. 2021

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Graphyne (GY) and graphdiyne (GDY) have been employed in photocatalysis since 2012, presenting intriguing electronic and optical properties, such as high electron mobility and intrinsic bandgap due to their high -conjugated structures. Authors are reporting the enhanced photocatalytic efficiency of these carbon allotropes when combined with different metal oxides or other carbon materials. However, the synthesis of graphyne-family members (GFMs) is still very recent, and not much is known about the true potential of these photocatalytic materials. In this review article, the implications of different synthesis routes on the structural features and photocatalytic properties of these materials are elucidated. The application of GFMs in the nicotinamide adenine dinucleotide (NADH) regeneration, hydrogen and oxygen evolution, and carbon dioxide reduction is discussed, as well as in the degradation of pollutants and bacteria inactivation in water and wastewater treatment.

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Tunable type-I/type-II transition in g-C3N4/graphyne heterostructure by BN-doping: A promising photocatalyst

Cited by 30 publications

References 77 publications

Synergetic Effects of Random Copolymerization/Backbone Fluorination and Heterojunction of Terpolymer/g‐C₃N₄ Enhance Photocatalytic Hydrogen Evolution

Synergetic Effects of Random Copolymerization/Backbone Fluorination and Heterojunction of Terpolymer/g‐C₃N₄ Enhance Photocatalytic Hydrogen Evolution

Evidence of direct Z-scheme triazine-based g-C₃N₄/BiOI (001) heterostructures: a hybrid density functional investigation

Advances on Graphyne‐Family Members for Superior Photocatalytic Behavior

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Tunable type-I/type-II transition in g-C3N4/graphyne heterostructure by BN-doping: A promising photocatalyst

Cited by 30 publications

References 77 publications

Synergetic Effects of Random Copolymerization/Backbone Fluorination and Heterojunction of Terpolymer/g‐C3N4 Enhance Photocatalytic Hydrogen Evolution

Synergetic Effects of Random Copolymerization/Backbone Fluorination and Heterojunction of Terpolymer/g‐C3N4 Enhance Photocatalytic Hydrogen Evolution

Evidence of direct Z-scheme triazine-based g-C3N4/BiOI (001) heterostructures: a hybrid density functional investigation

Advances on Graphyne‐Family Members for Superior Photocatalytic Behavior

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Product

Resources

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Synergetic Effects of Random Copolymerization/Backbone Fluorination and Heterojunction of Terpolymer/g‐C₃N₄ Enhance Photocatalytic Hydrogen Evolution

Synergetic Effects of Random Copolymerization/Backbone Fluorination and Heterojunction of Terpolymer/g‐C₃N₄ Enhance Photocatalytic Hydrogen Evolution

Evidence of direct Z-scheme triazine-based g-C₃N₄/BiOI (001) heterostructures: a hybrid density functional investigation