Oxygen-doped nanoporous carbon nitride via water-based homogeneous supramolecular assembly for photocatalytic hydrogen evolution

Zhang, Jingwen; Gong, Si; Mahmood, Nasir; Pan, Lun; Zhang, Xiangwen; Zou, Ji‐Jun

doi:10.1016/j.apcatb.2017.09.003

Cited by 223 publications

(94 citation statements)

References 44 publications

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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.…”

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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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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 the N1sh igh-resolution spectra (Figure S3c), the area corresponding to the Na tom of C=NÀC (ca. [22] In the FTIR spectra of m-PCN x (Figure 2b), the typicals tretching modes of CN heterocycles are observed in the region of 1200-1600 cm À1 ,a nd the characteristic vibration peak of the heptazine unit appears at 800 cm À1 . These results indicate the formation of the supramolecular precursors SP x ,and that S 2 O 8 2À is incorporated into SP x .…”

Section: Resultsmentioning

confidence: 97%

Modulation of Polymeric Carbon Nitrides through Supramolecular Preorganization for Efficient Photocatalytic Hydrogen Generation

et al. 2019

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Supramolecular pre‐assembly by design is an effective strategy to adapt the physicochemical properties of polymeric carbon nitrides (PCNs) to improve their solar conversion performance. A new supramolecular preorganization protocol, which employs H2O as the self‐assembly medium and sodium persulfate as a modifier, is proposed to modulate the textural and photoelectronic features of PCNs for efficient visible‐light H2 evolution. Sodium persulfate is revealed to precisely tailor the final carbon nitride polymers with unusual porous layered structures and promoted charge separation and migration kinetics. As a result, the modulated PCNs with optimized structures show a greatly enriched activity for photocatalytic H2 generation compared to the analogous materials derived from melamine without the modifier.

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Section: Strategies For Defects Generationmentioning

confidence: 99%

“…Recently, hydrothermal and solvothermal methods as well as ion‐exchange process have been developed to synthesize defect‐contained photocatalysts with the advantages of the facile set up, simple operations and low cost as well as desirable targets . For example, the defective g‐C 3 N 4 was produced via hydrothermal method (Figure c) . By virtue of the universality of ion exchange route, the dopants can also be introduced to the nonlayered photocatalysts through ion exchange as described earlier, for instance, Mn 2+ ions were imported into Cu 7 S 4 phase to partially substitute Cu + ions using cation‐exchange process, dramatically improving PC performance of hydrogen generation (Figure a) .…”

Section: Strategies For Defects Generationmentioning

confidence: 99%

Defect Engineering of Photocatalysts for Solar Energy Conversion

et al. 2020

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Solar energy conversion is one of the most versatile approaches for sustainable energy demands. The fundamental limitations for photocatalysis remain light absorption, charge separation, and photocatalytic (PC) performance of the catalysts. For the past few decades, defect engineering has been proven to be a promising solution for converting solar energy to chemical energy. In this regard, the recent progress of defect engineering toward solar energy conversion is summarized. Beginning with defects classification, the definition of various defects, synthesized strategies, and characterization techniques of controllable material defects are presented. The role of defect engineering on solar energy conversion is developed, extending light absorption, promoting charge separation, and facilitating stable PC reaction. The achievement of the defective photocatalysts is discussed toward versatile applications such as solar water splitting, CO2 reduction, nitrogen fixation, molecular activation, pollutants degradation, and solar cells. Finally, this Review, with regards to defect engineering, ends with the future opportunities and challenges for this exciting and emerging area for solar energy conversion.

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Oxygen-doped nanoporous carbon nitride via water-based homogeneous supramolecular assembly for photocatalytic hydrogen evolution

Cited by 223 publications

References 44 publications

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

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

Modulation of Polymeric Carbon Nitrides through Supramolecular Preorganization for Efficient Photocatalytic Hydrogen Generation

Defect Engineering of Photocatalysts for Solar Energy Conversion

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