g-C3N4 photoanode for photoelectrocatalytic synergistic pollutant degradation and hydrogen evolution

Zhao, Xiaolong; Pan, Donglai; Chen, Xiaofeng; Li, Ruping; Jiang, Tian-Ge; Wang, Qianqian; Li, Guisheng; Leung, Dennis Y.C.

doi:10.1016/j.apsusc.2018.10.090

Cited by 94 publications

(35 citation statements)

References 73 publications

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“…Acting as an effective charge transfer bridge, the RGO with excellent conductivity could efficiently accelerate the photoinduced electron transfer from GCN to the substrate, thereby increasing the PEC-HER efficiency. Besides, Leung et al reported an RGO-modified g-C 3 N 4 /Ni foam photoanode, in which a heterostructure between g-C 3 N 4 and RGO was formed, thus improving PEC-HER performance [ 87 ]. The optimized photoanode of g-C 3 N 4 /RGO (CNG)-Ni foam showed a stable transient photocurrent density of 0.5 mA∙cm −2 at 0.4 V vs. SCE with the maximum H 2 production rate of 6.0 mmol h −1 cm −2 , which were 2.5 and 2.0 times higher than the pristine g-C 3 N 4 , respectively.…”

Section: D Photoelectrodes Integrated With Nanocarbons Co-catalystsmentioning

confidence: 99%

Nanocarbon-Enhanced 2D Photoelectrodes: A New Paradigm in Photoelectrochemical Water Splitting

et al. 2020

Nano-Micro Lett.

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Solar-driven photoelectrochemical (PEC) water splitting systems are highly promising for converting solar energy into clean and sustainable chemical energy. In such PEC systems, an integrated photoelectrode incorporates a light harvester for absorbing solar energy, an interlayer for transporting photogenerated charge carriers, and a co-catalyst for triggering redox reactions. Thus, understanding the correlations between the intrinsic structural properties and functions of the photoelectrodes is crucial. Here we critically examine various 2D layered photoanodes/photocathodes, including graphitic carbon nitrides, transition metal dichalcogenides, layered double hydroxides, layered bismuth oxyhalide nanosheets, and MXenes, combined with advanced nanocarbons (carbon dots, carbon nanotubes, graphene, and graphdiyne) as co-catalysts to assemble integrated photoelectrodes for oxygen evolution/hydrogen evolution reactions. The fundamental principles of PEC water splitting and physicochemical properties of photoelectrodes and the associated catalytic reactions are analyzed. Elaborate strategies for the assembly of 2D photoelectrodes with nanocarbons to enhance the PEC performances are introduced. The mechanisms of interplay of 2D photoelectrodes and nanocarbon co-catalysts are further discussed. The challenges and opportunities in the field are identified to guide future research for maximizing the conversion efficiency of PEC water splitting.

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Section: D Photoelectrodes Integrated With Nanocarbons Co-catalystsmentioning

confidence: 99%

Nanocarbon-Enhanced 2D Photoelectrodes: A New Paradigm in Photoelectrochemical Water Splitting

et al. 2020

Nano-Micro Lett.

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“…[18][19][20][21] Graphitic carbon nitride (g-C 3 N 4 ), a novel polymeric semiconductor, has recently attracted much interest as a potential material for organic pollution degradation and hydrogen generation through water splitting. 22,23 Being low cost and nontoxic, and having chemical and high thermal stability and a sufficient energy bandgap E g (2.7 eV) are a few of the benets of this material. 24 Coupling g-C 3 N 4 with appropriate semiconductor metal oxides (ZnO, Fe 2 O 3 , Cu 2 O, TiO 2 , SnO 2 , BiVO 4 , NiO, WO 3 , and ZrO 2 ) is another efficient method for developing sunlight active photocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Sunlight-assisted degradation of textile pollutants and phytotoxicity evaluation using mesoporous ZnO/g-C₃N₄catalyst

et al. 2021

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“…Recently, solar hydrogen production from water splitting over semiconductor photocatalysts has become an available technique [10][11][12][13]. However, a single semiconductor is often hardly to become the high-efficiency photocatalyst owing to the fast recombination of photo-generated carriers inside the photocatalytic material [14][15][16]. As a consequence, H 2 -evolution cocatalysts have been demonstrated to be an ideal strategy to promote the photoexcited electron-hole pair separation, reduce the overpotentials for H 2 evolution, and subsequently enhance the interfacial catalytic efficiency of the photocatalysts [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Triethanolamine-mediated photodeposition formation of amorphous Ni-P alloy for improved H2-evolution activity of g-C3N4

Gao

et al. 2020

Sci. China Mater.

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Developing efficient, stable, and low-cost novel electron-cocatalysts is crucial for photocatalytic hydrogen evolution reaction. Herein, amorphous NiP alloy particles were successfully modified onto g-C 3 N 4 to construct the Ni-P/ g-C 3 N 4 photocatalyst through a simple and green triethanolamine (TEOA)-mediated photodeposition method. It was found that the TEOA could serve as an excellent complexing agent to coordinate with Ni 2+ to form [Ni(TEOA)] 2+ complex, which can promote the rapid and effective deposition of amorphous NiP alloy on the g-C 3 N 4 surface. Photocatalytic tests suggest that the hydrogen-evolution performance of g-C 3 N 4 can be greatly promoted through integrating amorphous NiP alloy. Especially, the Ni-P/g-C 3 N 4 (5 wt%) exhibits the superior H 2-generation activity (118.2 μmol h −1 g −1), which is almost 35.8 times that of bare g-C 3 N 4. Furthermore, the amorphous NiP alloy cocatalyst can also serve as the general hydrogen-production cocatalyst to greatly enhance the photocatalytic performance of traditional semiconductor materials such as TiO 2 and CdS. Based on the present results, the mechanism of the amorphous NiP alloy as the high-efficiency electron transfer medium was proposed for the boosted H 2generation rate. The present facile route may broaden the horizons for the efficient development of highly active cocatalysts in photocatalytic field.

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g-C3N4 photoanode for photoelectrocatalytic synergistic pollutant degradation and hydrogen evolution

Cited by 94 publications

References 73 publications

Nanocarbon-Enhanced 2D Photoelectrodes: A New Paradigm in Photoelectrochemical Water Splitting

Nanocarbon-Enhanced 2D Photoelectrodes: A New Paradigm in Photoelectrochemical Water Splitting

Sunlight-assisted degradation of textile pollutants and phytotoxicity evaluation using mesoporous ZnO/g-C₃N₄catalyst

Triethanolamine-mediated photodeposition formation of amorphous Ni-P alloy for improved H2-evolution activity of g-C3N4

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g-C3N4 photoanode for photoelectrocatalytic synergistic pollutant degradation and hydrogen evolution

Cited by 94 publications

References 73 publications

Nanocarbon-Enhanced 2D Photoelectrodes: A New Paradigm in Photoelectrochemical Water Splitting

Nanocarbon-Enhanced 2D Photoelectrodes: A New Paradigm in Photoelectrochemical Water Splitting

Sunlight-assisted degradation of textile pollutants and phytotoxicity evaluation using mesoporous ZnO/g-C3N4catalyst

Triethanolamine-mediated photodeposition formation of amorphous Ni-P alloy for improved H2-evolution activity of g-C3N4

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Sunlight-assisted degradation of textile pollutants and phytotoxicity evaluation using mesoporous ZnO/g-C₃N₄catalyst