Improved interfacial charge transfer and visible light activity of reduced graphene oxide–graphitic carbon nitride photocatalysts

Tiong, Peggy; Lintang, Hendrik Oktendy; Endud, Salasiah; Yuliati, Leny

doi:10.1039/c5ra17967j

Cited by 44 publications

(18 citation statements)

References 46 publications

(100 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The stretching modes of v(C-N) heterocycles were observed at 1200 -1700 cm -1 , while the heterocyclic tri-s-triazine (C 6 N 7 ) was found at around 809 cm -1 . Even though the presence of amino groups in the synthesized CN is difficult to be analysed by FTIR spectroscopy, it has been reported by XPS analysis [31]. It was obvious that the Cu(x)/CN composite exhibited almost similar peaks to those of the CN, which indicated that the structure of CN was kept to be almost the same even after addition of copper species on the samples, similar to other reported literatures [24,32].…”

Section: Results and Discussion Characterization Of Cn And Cu(x)/cn Csupporting

confidence: 84%

“…Figure 2. The CN showed vibration bands at around 3300 -3400 cm -1 that can be attributed to the overlapping bands of primary and secondary amine, v(N-H) and v(O-H) groups [21][22][23][24][31][32][33][34][35]. The stretching modes of v(C-N) heterocycles were observed at 1200 -1700 cm -1 , while the heterocyclic tri-s-triazine (C 6 N 7 ) was found at around 809 cm -1 .…”

Section: Results and Discussion Characterization Of Cn And Cu(x)/cn Cmentioning

confidence: 97%

See 1 more Smart Citation

Copper Modified Carbon Nitride as Fluorescence Sensor for Nitrate Ions

Jasman¹,

Hendrik²,

Lee³

et al. 2017

MJAS

View full text Add to dashboard Cite

In this study, newly developed copper modified CN composites were prepared and tested as a fluorescence sensor for detection of nitrate ions (NO 3-). The structure and chemical properties of CN and copper modified CN composites were investigated via Xray diffraction (XRD), Fourier transform infra-red (FTIR), diffuse reflectance ultraviolet-visible (DR UV-Vis) and fluorescence spectroscopies. Three emission sites represented as C=N, C=O and C-N moieties were suggested to contribute as sensing sites in CN and copper modified CN composites. The sensing capabilities of CN and copper modified CN composites toward NO 3 in the range of 300 to 1800 µM were determined via a quenching technique. The quenching efficiencies (K SV) of CN and copper modified CN composites were obtained from the Stern-Volmer plot. Among three emission peaks of CN, C=N sites were found to be the most sensitive site having the strongest interaction with NO 3-. By addition of Cu(0.5 mol%), the K SV of CN was improved from 2.11 x 10-4 to 5.27 x 10-4 µM-1. This study showed that with the addition of copper as modifier, the performance of CN can be improved and the composite can be used as potential fluorescence sensor for the detection of NO 3- .

show abstract

Section: Results and Discussion Characterization Of Cn And Cu(x)/cn Csupporting

confidence: 84%

Section: Results and Discussion Characterization Of Cn And Cu(x)/cn Cmentioning

confidence: 97%

Copper Modified Carbon Nitride as Fluorescence Sensor for Nitrate Ions

Jasman¹,

Hendrik²,

Lee³

et al. 2017

MJAS

View full text Add to dashboard Cite

show abstract

“…However, a high increase to 1.00% rGO content led to a decrease in the photocatalytic activity which may be justified with the decrease of available CN catalyst surface, which seems to be responsible for the direct oxidation of BA into BAL. A similar optimal amount of rGO (i.e 0.10 wt.%) in the rGO/g-C 3 N 4 photocatalyst has been already reported for the degradation of phenol under visible light irradiation; [34] the higher performance of this composite in comparison to bare g-C 3 N 4 was attributed to the suppressed electron hole recombination and also to the improvement of the interface charge transfer. [34]…”

Section: Materials Characterizationsupporting

confidence: 73%

“…A similar optimal amount of rGO (i.e 0.10 wt.%) in the rGO/g-C 3 N 4 photocatalyst has been already reported for the degradation of phenol under visible light irradiation; [34] the higher performance of this composite in comparison to bare g-C 3 N 4 was attributed to the suppressed electron hole recombination and also to the improvement of the interface charge transfer. [34]…”

Section: Materials Characterizationsupporting

confidence: 73%

Selective Production of Benzaldehyde Using Metal‐Free Reduced Graphene Oxide/Carbon Nitride Hybrid Photocatalysts

et al. 2018

View full text Add to dashboard Cite

Benzyl alcohol was selectively oxidized to benzaldehyde in aqueous solution, at ambient conditions of temperature and pressure, by using a photocatalytic approach, with two types of irradiation sources, namely monochromatic UV−A light (392 nm) and visible light (400‐700 nm). Conversion after 4 h of reaction was more efficient under UV than under visible, with selectivity in excess of 80% for both irradiating sources. Composites of graphitic carbon nitride (g‐C3N4) containing small amounts of reduced graphene oxide (rGO) (up to 1 wt.%) were used as photocatalysts. The presence of rGO was confirmed by spectroscopic and microscopic analyses. Results show that small amounts of rGO phase can considerably enhance the photocatalytic activity of g‐C3N4 based catalysts, the best load being 0.10 wt.%. This improvement is attributed to the critical modification of morphological and electronic properties provided by the presence of rGO.

show abstract

“…The H 2 production rate of the graphene/g-C 3 N 4 composite is 451 µmol¨h´1¨g´1, 3.07 times more than pure g-C 3 N 4 . Toing's group [120] employed a photocatalytic reduction method to produce RGO/g-C 3 N 4 photocatalysts and evaluated its photocatalytic performance by degradation of phenol under visible light irradiation. They suggested that due to the presence of an aromatic network in both g-C 3 N 4 and RGO, the RGO can interact with g-C 3 N 4 via π-π stacking, which can promote the electron-hole separation and improve the interfacial charge transfer.…”

Section: D/2dmentioning

confidence: 99%

Nanocarbons with Different Dimensions as Noble-Metal-Free Co-Catalysts for Photocatalysts

Shen

et al. 2016

Catalysts

View full text Add to dashboard Cite

Abstract:In this review, we provide an overview of recent progress in nanocarbons with different dimensions as noble-metal-free co-catalysts for photocatalysts. We put emphasis on the interface engineering between nanocarbon co-catalysts and various semiconductor photocatalysts and the novel properties generating of nanocarbon co-catalysts, also including the synthesis and application of nanocarbon-based photocatalyst composites.

show abstract

Improved interfacial charge transfer and visible light activity of reduced graphene oxide–graphitic carbon nitride photocatalysts

Abstract: rGO–gCN composites, which were prepared by the in situ photoreduction of GO using bulk gCN as the photocatalyst, exhibited higher photocatalytic activity than bare gCN due to the improved interface charge transfer.

Cited by 44 publications

References 46 publications

Copper Modified Carbon Nitride as Fluorescence Sensor for Nitrate Ions

Copper Modified Carbon Nitride as Fluorescence Sensor for Nitrate Ions

Selective Production of Benzaldehyde Using Metal‐Free Reduced Graphene Oxide/Carbon Nitride Hybrid Photocatalysts

Nanocarbons with Different Dimensions as Noble-Metal-Free Co-Catalysts for Photocatalysts

Contact Info

Product

Resources

About