Precursor-reforming protocol to 3D mesoporous g-C 3 N 4 established by ultrathin self-doped nanosheets for superior hydrogen evolution

Tian, Na; Zhang, Yihe; Li, Xiaowei; Xiao, Ke; Du, Xin; Dong, Fan; Waterhouse, Geoffrey I. N.; Zhang, Tierui; Huang, Hongwei

doi:10.1016/j.nanoen.2017.05.038

Cited by 636 publications

(231 citation statements)

References 65 publications

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“…Upon PH 3 annealing, the average lifetime gradually reduced from 4.75 ns for pristine g‐C 3 N 4 to 4.37 ns for 300‐g‐C 3 N 4 , and finally to 1.42 ns for 500‐g‐C 3 N 4 , the same trend as PL quenching. These findings indicate that the fast charge recombination of g‐C 3 N 4 photocatalysts can be remarkably suppressed by PH 3 annealing induced P doping although surface states are introduced incidentally.…”

Section: Resultsmentioning

confidence: 82%

Phosphorus‐doped Isotype g‐C₃N₄/g‐C₃N₄: An Efficient Charge Transfer System for Photoelectrochemical Water Oxidation

et al. 2018

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Constructing isotype g‐C3N4/g‐C3N4 heterojunction is an approach to improve the efficiency of g‐C3N4 towards solar‐assisted oxidation of water. Such functional configuration can effectively overcome the intrinsic drawback of rapid charge recombination of g‐C3N4. Here, a modified g‐C3N4, with homogeneous phosphorus doping, is prepared in this work through a phosphide‐involved gas phase reaction. The resulting P‐g‐C3N4 displays altered electronic structure, including upshifted band edge potential, narrowed band gap and improved electronic conductivity. These features allow P‐g‐C3N4 as an outstanding candidate to form isotype junction with pristine g‐C3N4. As expected, the accelerated charge separation and migration in target junction is validated by various measurements. The optimized isotype g‐C3N4/P‐g‐C3N4 heterojunction achieves a photocurrent as high as 0.3 mA cm−2 at 1.23 V vs RHE (AM 1.5G, 100 mW cm−2), representing 8‐fold's enhancement compared with pristine g‐C3N4. The present strategy for constructing g‐C3N4‐based isotype heterojunction networks is found effective for large‐scale manufacturing.

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Section: Resultsmentioning

confidence: 82%

Phosphorus‐doped Isotype g‐C₃N₄/g‐C₃N₄: An Efficient Charge Transfer System for Photoelectrochemical Water Oxidation

et al. 2018

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“…Comparison of FT‐IR spectra in the different preparation methods are shown in Figure S2a in the Supporting Information. For the pristine, the FT‐IR is similar to that of the classical method of the preparation of g‐C 3 N 4 (melamine, 550 °C and 2 h) . When the heat preservation periods are 0.5, 1, and 1.5 h, the peaks of OCNC(N)O (vibration absorption peak) and CO (stretching vibration peaks) disappear or decrease in products, but NC(N)N vibration absorption peak at 2114 cm −1 increase, which is due to the splitting decomposition of the sample under atmosphere protection.…”

mentioning

confidence: 87%

New 2D Carbon Nitride Organic Materials Synthesis with Huge‐Application Prospects in CN Photocatalyst

Zhao

Cheng

et al. 2018

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In recent years, 2D materials are attracting increased attention because of their excellent properties. In this paper, new 2D carbon nitride (CN) organic materials are successfully prepared on the basis of the organic synthesis theory, and the thickness is about 1.5 nm. This new 2D CN organic material further strengthens the 2D materials family. Meanwhile, their synthetic mechanism is theoretically speculated. Then CN photocatalysts of several structures are obtained by roasting 2D CN organic materials. Through the photocatalytic hydrogen production experiments, the results exhibit that these kinds of photocatalysts have good photocatalytic effects compared to common g-C N .

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“…To further investigate the separation efficiency of the photogenerated electron–hole pairs, photoluminescence spectroscopy (PL) was performed at the room temperature. Generally, PL spectrum is helpful for analysis the migration and transfer of electron as the PL intensity is highly dependent on the electron–hole pairs recombination processes . Thus, the photocatalytic performance of photocatalysts can be explained by their PL spectra.…”

Section: Resultsmentioning

confidence: 99%

Dual cocatalysts decorated three dimensionally ordered mesoporous g‐C₃N₄ with homogeneous wall thickness for enhanced photocatalytic performance

Zhao

et al. 2020

Applied Organom Chemis

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Making several components be more intimate interfacial contacts in the photocatalyst is an efficient strategy to improve the separation and transfer of photogenerated charge carries and enhance the photocatalytic performance in the visible light region. In this work, a promising photocatalyst was fabricated by loading of Au nanoparticles and Cd(0.58)Zn(0.42)S nanoparticles onto the three dimensionally ordered mesoporous g‐C3N4 material (Au/3DOM CN/Cd(0.58)Zn(0.42)S) via two‐step synthesis method to significantly intensify the transfer capability of charge. The results of characterization demonstrate that Au/3DOM CN/Cd(0.58)Zn(0.42)S photocatalyst possesses the intimate interfacial contacts of three components and homogeneous wall thickness of 3DOM g‐C3N4 framework, and these properties give Au/3DOM CN/Cd(0.58)Zn(0.42)S photocatalyst an ability that it can harvest a wider range of visible light and endow it superior photocatalytic activities for hydrogen evolution from water splitting and RhB degradation. Finally, a possible mechanism was proposed based on the photoelectrochemical measurement. This work would provide a new strategy to design and fabricate g‐C3N4‐based with 3DOM architecture materials with superior photocatalytic activity.

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Precursor-reforming protocol to 3D mesoporous g-C 3 N 4 established by ultrathin self-doped nanosheets for superior hydrogen evolution

Cited by 636 publications

References 65 publications

Phosphorus‐doped Isotype g‐C₃N₄/g‐C₃N₄: An Efficient Charge Transfer System for Photoelectrochemical Water Oxidation

Phosphorus‐doped Isotype g‐C₃N₄/g‐C₃N₄: An Efficient Charge Transfer System for Photoelectrochemical Water Oxidation

New 2D Carbon Nitride Organic Materials Synthesis with Huge‐Application Prospects in CN Photocatalyst

Dual cocatalysts decorated three dimensionally ordered mesoporous g‐C₃N₄ with homogeneous wall thickness for enhanced photocatalytic performance

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Precursor-reforming protocol to 3D mesoporous g-C 3 N 4 established by ultrathin self-doped nanosheets for superior hydrogen evolution

Cited by 636 publications

References 65 publications

Phosphorus‐doped Isotype g‐C3N4/g‐C3N4: An Efficient Charge Transfer System for Photoelectrochemical Water Oxidation

Phosphorus‐doped Isotype g‐C3N4/g‐C3N4: An Efficient Charge Transfer System for Photoelectrochemical Water Oxidation

New 2D Carbon Nitride Organic Materials Synthesis with Huge‐Application Prospects in CN Photocatalyst

Dual cocatalysts decorated three dimensionally ordered mesoporous g‐C3N4 with homogeneous wall thickness for enhanced photocatalytic performance

Contact Info

Product

Resources

About

Phosphorus‐doped Isotype g‐C₃N₄/g‐C₃N₄: An Efficient Charge Transfer System for Photoelectrochemical Water Oxidation

Phosphorus‐doped Isotype g‐C₃N₄/g‐C₃N₄: An Efficient Charge Transfer System for Photoelectrochemical Water Oxidation

Dual cocatalysts decorated three dimensionally ordered mesoporous g‐C₃N₄ with homogeneous wall thickness for enhanced photocatalytic performance