Nitrogen vacancy induced in situ g-C3N4 p-n homojunction for boosting visible light-driven hydrogen evolution

Liao, Yuwei; Wang, Guohong; Wang, Juan; Wang, Kai; Yan, Sen; Su, Yaorong

doi:10.1016/j.jcis.2020.12.009

Cited by 110 publications

(57 citation statements)

References 61 publications

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“…6e reflect the time constant at the high frequency region at the semiconductor–electrolyte interface, illustrating the carrier migration kinetics. 50–53 Co 0.85 Se/TiO 2 shows a longer charge carrier lifetime (0.080 s) than Co 0.85 Se (0.017 s), illustrating that the carriers produced by Co 0.85 Se/TiO 2 are more likely to migrate to the interface to participate in the reaction. According to Fig.…”

Section: Resultsmentioning

confidence: 96%

0D/2D Co_0.85Se/TiO₂ p–n heterojunction for enhanced photocatalytic H₂ evolution

Feng

Sun

et al. 2022

Catal. Sci. Technol.

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Section: Resultsmentioning

confidence: 96%

0D/2D Co_0.85Se/TiO₂ p–n heterojunction for enhanced photocatalytic H₂ evolution

Feng

Sun

et al. 2022

Catal. Sci. Technol.

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“…With this, secondary modification of materials with different dimensions of g-C 3 N 4 and doping elements will have great potential. Nevertheless, the preparation of materials cannot be perfect due to the absence of N, C and cyanogroup, which is also called defect engineering, but this will provide opportunities for the improvement of optical properties of g-C 3 N 4 [30,31].…”

Section: Modification Pathways For G-c Nmentioning

confidence: 99%

g-C3N4 Derived Materials for Photocatalytic Hydrogen Production: A Mini Review on Design Strategies

Su¹,

Deng²,

Li³

et al. 2022

Journal of Renewable Materials

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Hydrogen production through solar energy is one of the most important pathways to meet the growing demand of renewable energy, and photocatalyst participation in solar hydrolytic hydrogen production has received great attention in recent years in terms of low cost, high efficiency, and flexible design. Particularly, g-C 3 N 4 (Graphiticlike carbon nitride material), as a unique material, can catalyze the hydrogen production process by completing the separation and transmission of charge. The easily adjustable pore structure/surface area, dimension, band-gap modulation and defect have shown great potential for hydrogen production from water cracking. In this review, the most recent advance of g-C 3 N 4 including the doping of metal and non-metal elements, and the formation of semiconductor heterojunction is highlighted. The main modification strategies and approaches for the design of g-C 3 N 4 for hydrogen production, as well as the influence of various materials on hydrogen evolution regarding the photocatalysis mechanism and advantages brought by theoretical calculations are specially and briefly illustrated. Potential design pathways and strategies of g-C 3 N 4 are discussed. In addition, current challenges of hydrogen production from g-C 3 N 4 water splitting are summarized and can be expected.

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“…12b, only g-C 3 N 4 absorbs visible light and excites, and the photo-induced electron migrates from VB to CB undergoing secondary reaction to produce ·O 2 − simultaneously holes directly reacts with MO dye which proposes typical z-scheme [59,60]. Out of these two photocatalytic mechanisms, it is easily distinguished that there would be high photodegradation rate under UV-Vis light rather than sunlight due to enhanced light absorption [61,62]. This might be due to delay of recombination of electrons and holes which allows them to react with dye molecules of MO.…”

Section: Probable Pathway Of Photocatalytic Degradation Of Momentioning

confidence: 99%

Development of g-C3N4-TiO2 visible active hybrid photocatalyst for the photodegradation of methyl orange

Kuldeep

Dhabbe²,

Garadkar

2021

Res Chem Intermed

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In this paper, we report the synthesis of g-C 3 N 4 -TiO 2 hybrid photocatalyst by using the simple, cost-effective and eco-friendly process. The development of TiO 2 nanoflakes on the surface of g-C 3 N 4 nanosheet was carried out by the in situ sol-gel method. The XRD patterns reveal the anatase phase of TiO 2 in the g-C 3 N 4 -TiO 2 nanocomposite. HR-TEM images confirm the size of the nanoflakes in the range of 15-25 nm. The O-Ti and Ti-O-Ti bridge produces the absorption band from 560 to 710 cm −1 for TiO 2 ; it is due to stretching vibrations and the specific band at 805 cm −1 marks the sym-triazine ring of g-C 3 N 4 . UV-Vis spectra show a redshift from 394 to 471 nm in the nanocomposite concerning a decrease in band gap. From BET, it is seen that the surface area of bare TiO 2 and g-C 3 N 4 -TiO 2 are 66 and 146 m 2 g −1 , respectively. The nanoflakes morphology of g-C 3 N 4 -TiO 2 was confirmed from FE-SEM images. The EDS spectrum confirms C, N, Ti, and O elements which prove the purity of the nanocomposite. The g-C 3 N 4 -TiO 2 (1:4) acquired a noticeable enhancement of photocatalytic activity which is double for methyl orange degradation than TiO 2 .

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Nitrogen vacancy induced in situ g-C3N4 p-n homojunction for boosting visible light-driven hydrogen evolution

Cited by 110 publications

References 61 publications

0D/2D Co_0.85Se/TiO₂ p–n heterojunction for enhanced photocatalytic H₂ evolution

0D/2D Co_0.85Se/TiO₂ p–n heterojunction for enhanced photocatalytic H₂ evolution

g-C3N4 Derived Materials for Photocatalytic Hydrogen Production: A Mini Review on Design Strategies

Development of g-C3N4-TiO2 visible active hybrid photocatalyst for the photodegradation of methyl orange

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Nitrogen vacancy induced in situ g-C3N4 p-n homojunction for boosting visible light-driven hydrogen evolution

Cited by 110 publications

References 61 publications

0D/2D Co0.85Se/TiO2 p–n heterojunction for enhanced photocatalytic H2 evolution

0D/2D Co0.85Se/TiO2 p–n heterojunction for enhanced photocatalytic H2 evolution

g-C3N4 Derived Materials for Photocatalytic Hydrogen Production: A Mini Review on Design Strategies

Development of g-C3N4-TiO2 visible active hybrid photocatalyst for the photodegradation of methyl orange

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0D/2D Co_0.85Se/TiO₂ p–n heterojunction for enhanced photocatalytic H₂ evolution

0D/2D Co_0.85Se/TiO₂ p–n heterojunction for enhanced photocatalytic H₂ evolution