A fantastic graphitic carbon nitride (g-C3N4) material: Electronic structure, photocatalytic and photoelectronic properties

Dong, Guoping; Zhang, Yuanhao; Pan, Qiwen; Qiu, Jianrong

doi:10.1016/j.jphotochemrev.2014.04.002

Cited by 861 publications

(397 citation statements)

References 160 publications

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“…Although the activation of pristine g-C 3 N 4 can be achieved in the visible light region up to 460 nm, its photocatalytic efficiency is limited due to the high recombination probability of photoexcited electron-hole pairs [20]. It is expected that coupling g-C 3 N 4 with TiO 2 would form a Z-scheme photocatalytic system and solve the problems normally encountered when using each of the semiconducting materials individually.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a Z-Scheme g-C3N4/Fe-TiO2 Photocatalytic Composite with Enhanced Photocatalytic Activity under Visible Light Irradiation

Zhu

Murugananthan

et al. 2018

Catalysts

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Abstract:In the present study, a nanocomposite material g-C 3 N 4 /Fe-TiO 2 has been prepared successfully by a simple one-step hydrothermal process and its structural properties were thoroughly studied by various characterization techniques, such as X-ray diffraction (XRD), Fourier Transform Infrared (FTIR) spectroscopy, electron paramagnetic resonance (EPR) spectrum, X-ray photoelectron spectroscopy (XPS), and UV-vis diffuse reflectance spectrometry (UV-vis DRS). The performance of the fabricated composite material towards the removal of phenol from aqueous phase was systematically evaluated by a photocatalytic approach and found to be highly dependent on the content of Fe 3+ . The optimum concentration of Fe 3+ doping that showed a dramatic enhancement in the photocatalytic activity of the composite under visible light irradiation was observed to be 0.05% by weight. The separation mechanism of photogenerated electrons and holes of the g-C 3 N 4 /Fe-TiO 2 photocatalysts was established by a photoluminescence technique in which the reactive species generated during the photocatalytic treatment process was quantified. The enhanced photocatalytic performance observed for g-C 3 N 4 -Fe/TiO 2 was ascribed to a cumulative impact of both g-C 3 N 4 and Fe that extended its spectrum-absorptive nature into the visible region. The heterojunction formation in the fabricated photocatalysts not only facilitated the separation of the photogenerated charge carriers but also retained its strong oxidation and reduction ability.

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Section: Introductionmentioning

confidence: 99%

Fabrication of a Z-Scheme g-C3N4/Fe-TiO2 Photocatalytic Composite with Enhanced Photocatalytic Activity under Visible Light Irradiation

Zhu

Murugananthan

et al. 2018

Catalysts

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“…This unique property and its electric conductivity make it promising for potential applications and theoretical predictions [19][20][21]. Wang et al first used g-C 3 N 4 as a photocatalyst to successfully produce hydrogen [21], and since then, research has explored H 2 evolution and organics degradation [22,23]. However, pure g-C 3 N 4 has some shortcomings, such as rapid recombination of photo-generated electron-hole pairs, resulting in low photocatalytic activity [24,25].…”

Section: Introductionmentioning

confidence: 99%

Can environmental pharmaceuticals be photocatalytically degraded and completely mineralized in water using g-C3N4/TiO2 under visible light irradiation?—Implications of persistent toxic intermediates

Nie

Gao

et al. 2016

Applied Catalysis B: Environmental

150

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“…Due to the strong C-N good chemical stability and thermal stability (up to 600 o C). All these merits make it to be an idea material for the application in hydrogen evolution 19,[21][22][23][24][25][26][27][28][29][30] as well as environmental pollutant degradation. [31][32][33][34][35][36][37][38][39][40] g-C 3 N 4 is a semiconductor with a band gap of 2.7 eV, with a VB level suitable for hydrogen and oxygen evolution both.…”

Section: Introductionmentioning

confidence: 99%

Surface modification of g-C3N4 by hydrazine: Simple way for noble-metal free hydrogen evolution catalysts

Yin

Lin

Wang

et al. 2016

Chemical Engineering Journal

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The graphitic carbon nitride (g-C 3 N 4 ) usually is thought to be an inert material and it's difficult to have the surface terminated NH 2 groups functionalized. By modifying the g-C 3 N 4 surface with hydrazine, the diazanyl group was successfully introduced onto the g-C 3 N 4 surface, which allows the introduction with many other function groups. Here we illustrated that by reaction of surface hydrazine group modified g-C 3 N 4 with CS 2 under basic condition, a water electrolysis active group C(=S)SNi can be implanted on the g-C 3 N 4 surface, and leads to a noble metal free hydrogen evolution catalyst. This catalyst has 40% hydrogen evolution efficiency compare to the 3 wt% Pt photo precipitated g-C 3 N 4 , with only less than 0.2 wt% nickel.

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A fantastic graphitic carbon nitride (g-C3N4) material: Electronic structure, photocatalytic and photoelectronic properties

Cited by 861 publications

References 160 publications

Fabrication of a Z-Scheme g-C3N4/Fe-TiO2 Photocatalytic Composite with Enhanced Photocatalytic Activity under Visible Light Irradiation

Fabrication of a Z-Scheme g-C3N4/Fe-TiO2 Photocatalytic Composite with Enhanced Photocatalytic Activity under Visible Light Irradiation

Can environmental pharmaceuticals be photocatalytically degraded and completely mineralized in water using g-C3N4/TiO2 under visible light irradiation?—Implications of persistent toxic intermediates

Surface modification of g-C3N4 by hydrazine: Simple way for noble-metal free hydrogen evolution catalysts

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