Graphitic carbon nitride (g-C 3 N 4 ) nanocomposites: A new and exciting generation of visible light driven photocatalysts for environmental pollution remediation

Mamba, Gcina; Mishra, Ajay Kumar

doi:10.1016/j.apcatb.2016.05.052

Cited by 1,002 publications

(330 citation statements)

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“…Particularly, it can be easily obtained by the heat treatment of nitrogen-rich precursors at relatively low temperature 20,21 . More importantly, g-C 3 N 4 has been frequently employed as an ideal narrow-bandgap cocatalyst to combine with appropriate photocatalysts to form heterostructured composites with enhanced photocatalytic performance 22,23 . It is worth noting that energy-band potentials of g-C 3 N 4 and BiFeO 3 are wellmatched 24,25 .…”

Section: Introductionmentioning

confidence: 99%

“…It is generally accepted that the photocatalytic performance of g-C 3 N 4 /metal oxides composites strongly related to the morphology and size of g-C 3 N 4 23 . Especially for the nanoscale g-C 3 N 4 (such as nanosheets and nanoparticles), these materials possess large specific surface area, and thus provide more available surface active sites for the photocatalytic reaction and larger contact area for photogenerated charges transformation 23,26 . To the best of our knowledge, however, the enhanced photocatalytic activity of BiFeO 3 by decorated with g-C 3 N 4 nanoparticles is rarely reported.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Photocatalytic Degradation Activity of BiFeO3 Microspheres by Decoration with g-C3N4 Nanoparticles

Yang

Tang

et al. 2018

Mat. Res.

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In this work, the g-C 3 N 4 nanoparticles decorated BiFeO 3 microspheres composites (g-C 3 N 4 / BiFeO 3 ) were successfully synthesized by hydrothermal treatment of g-C 3 N 4 nanoparticles together with BiFeO 3 microspheres. The SEM and HRTEM observation indicate that the C 3 N 4 nanoparticles with size of 30-50 nm are well decorated on the surface of BiFeO 3 microspheres. The photocatalytic activities of the samples are investigated by the degradation of methylene blue (MB) under the irradiation of simulated sunlight. The as-prepared g-C 3 N 4 /BiFeO 3 composites exhibit remarkable enhanced photocatalytic activity compared with bare BiFeO 3 . More importantly, the photocataltic performance of the composites is further confirmed by the degradation of colorless phenol. Furthermore, the favorable catalytic stability of composites is demonstrated through the recycling photocatalytic experiment. The enhanced photocatalytic activity of g-C 3 N 4 /BiFeO 3 composites is mainly attributed to the separation of the photogenerated electron-hole pairs, resulting from the migration of the photoinduced charge between g-C 3 N 4 nanoparticles and BiFeO 3 . A possible photocatalytic mechanism for dye degradation over g-C 3 N 4 /BiFeO 3 composite is proposed based on the active species trapping experiment, revealing that the photogenerated hole (h + ) and hydrogen peroxide (H 2 O 2 ) are regarded as the major active species for the decomposition of dye, while hydroxyl radicals (•OH) plays a minor role in the photocatalytic reaction.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Degradation Activity of BiFeO3 Microspheres by Decoration with g-C3N4 Nanoparticles

Yang

Tang

et al. 2018

Mat. Res.

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“…Especially, g-C 3 N 4 nanosheets which show distinct physical and chemical features with larger specic area and outstanding electronic mobility, 20,21 are considered to be an appropriate candidate to couple with other semiconductors to form high-performance photocatalysts. As a matter of fact, many progresses have been made on g-C 3 N 4 nanosheets based composites, 22 25 MoS 2 /g-C 3 N 4 , 26 etc. These composite systems have deservedly achieved enhanced photocatalytic performance which is generally ascribed to the improved reaction sites, charge separation and migration processes.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of g-C₃N₄ nanosheets loaded with WO₃ nanoparticles with enhanced photocatalytic performance under visible light irradiation

et al. 2017

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Graphitic carbon nitride (g-C 3 N 4 ) nanosheets loaded with WO 3 nanoparticles were prepared via heat treatment of g-C 3 N 4 together with WO x -EDA nanobelts. The thermal treatment temperature and WO x -EDA precursor play the key role in enhancing the interaction between WO 3 nanoparticles and g-C 3 N 4 nanosheets, because the temperature of thermal decomposition of WO x -EDA ($400 C) is close to the thermal exfoliation temperature of g-C 3 N 4 . The structure evolution and promotion effect of the nanocomposites in photocatalytic performance were well studied. It is found that WO 3 nanoparticles uniformly dispersed on the surface of the g-C 3 N 4 nanosheets, and the close integration of WO 3 and g-C 3 N 4 lead to the high photocatalytic activity in the degradation of RhB under visible light irradiation.Meanwhile, a larger specific area and increase of visible light absorption are also of benefit to speed up the degradation of organic dye. Also, the mechanism of the photocatalytic reaction and its reutilization properties were investigated.

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“…To overcome these bottlenecks, modification of bare g-C3N4 such as nanostructure design (Niu et al, 2012;Liang et al, 2015c;Zheng et al, 2015), intercalation with Li + and Cl − (Liang et al, 2015a), elemental doping Huang et al, 2015;She et al, 2016), copolymerization (Fan et al, 2016;Rahman et al, 2016), coupling with metals or noble metals (Tonda et al, 2014;Ong et al, 2015b), incorporation with other semiconductors Putri et al, 2016a;Zhang et al, 2016g;Ye et al, 2017), hybridization with metal phosphides (Pan et al, 2017;Wen et al, 2017;Yi et al, 2017;Zhao et al, 2017a,b), and many more has been widely investigated to enhance the photocatalytic efficiency for practical benefits. To date, there are a number of excellent review articles highlighting on g-C3N4-based photocatalysts ranging from materials synthesis, functionalization, and hybridization to diversified applications Dong and Cheng, 2015;Yin et al, 2015;Zhang et al, 2015a;Zhao et al, 2015;Liu et al, 2016a;Mamba and Mishra, 2016). This undoubtedly connotes the significance of this research field hitherto in the scientific community.…”

Section: Institute Of Materials Research and Engineering (Imre) Agenmentioning

confidence: 99%

2D/2D Graphitic Carbon Nitride (g-C3N4) Heterojunction Nanocomposites for Photocatalysis: Why Does Face-to-Face Interface Matter?

Ong

2017

Front. Mater.

205

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In recent years, two-dimensional (2D) graphitic carbon nitride (g-C3N4) has elicited interdisciplinary research fascination among the scientific communities due to its attractive properties such as appropriate band structures, visible-light absorption, and high chemical and thermal stability. At present, research aiming at engineering 2D g-C3N4 photocatalysts at an atomic and molecular level in conquering the global energy demand and environmental pollution has been thriving. In this review, the cutting-edge research progress on the 2D/2D g-C3N4-based hybrid nanoarchitectures will be systematically highlighted with a specific emphasis on a multitude of photocatalytic applications, not only in waste degradation for pollution alleviation, but also in renewable energy production [e.g., water splitting and carbon dioxide (CO2) reduction]. By reviewing the substantial developments on this hot research platform, it is envisioned that the review will shed light and pave a new prospect for constructing high photocatalytic performance of 2D/2D g-C3N4-based system, which could also be extended to other related energy fields, namely solar cells, supercapacitors, and electrocatalysis.

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Graphitic carbon nitride (g-C 3 N 4 ) nanocomposites: A new and exciting generation of visible light driven photocatalysts for environmental pollution remediation

Cited by 1,002 publications

References 386 publications

Enhanced Photocatalytic Degradation Activity of BiFeO3 Microspheres by Decoration with g-C3N4 Nanoparticles

Enhanced Photocatalytic Degradation Activity of BiFeO3 Microspheres by Decoration with g-C3N4 Nanoparticles

Facile synthesis of g-C₃N₄ nanosheets loaded with WO₃ nanoparticles with enhanced photocatalytic performance under visible light irradiation

2D/2D Graphitic Carbon Nitride (g-C3N4) Heterojunction Nanocomposites for Photocatalysis: Why Does Face-to-Face Interface Matter?

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Graphitic carbon nitride (g-C 3 N 4 ) nanocomposites: A new and exciting generation of visible light driven photocatalysts for environmental pollution remediation

Cited by 1,002 publications

References 386 publications

Enhanced Photocatalytic Degradation Activity of BiFeO3 Microspheres by Decoration with g-C3N4 Nanoparticles

Enhanced Photocatalytic Degradation Activity of BiFeO3 Microspheres by Decoration with g-C3N4 Nanoparticles

Facile synthesis of g-C3N4 nanosheets loaded with WO3 nanoparticles with enhanced photocatalytic performance under visible light irradiation

2D/2D Graphitic Carbon Nitride (g-C3N4) Heterojunction Nanocomposites for Photocatalysis: Why Does Face-to-Face Interface Matter?

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Facile synthesis of g-C₃N₄ nanosheets loaded with WO₃ nanoparticles with enhanced photocatalytic performance under visible light irradiation