Facile synthesis of composite g-C3N4/WO3: a nontoxic photocatalyst with excellent catalytic activity under visible light

Zang, Yipeng; Li, Liping; Zuo, Ying; Lin, Haifeng; Li, Guangshe; Guan, Xiangfeng

doi:10.1039/c3ra41982g

Cited by 97 publications

(58 citation statements)

References 40 publications

(7 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The formation of g-C 3 N 4 when heating melamine at temperature of about 500 o C was reported in several papers. 39,40 Meanwhile, this peak is not observable for the WM-600 and WM-700, implying that the further decomposition of g-C 3 N 4 with remaining WO 3 phase occurs at elevated temperatures. This matches with the results in the papers.…”

Section: Resultsmentioning

confidence: 92%

“…All materials have a board peak with strong intensity at about 820 cm −1 which is assigned to stretching vibration of the W-O-W. 38,39 In addition to this peak, the spectrum for WM-500 has some additional peaks which are characteristic of g-C 3 N 4 . Indeed, peaks attributable to the vibration of the CN heterocycles can be clearly observed in the range of 1200-1650 cm …”

Section: 40mentioning

confidence: 99%

“…Graphitic g-C 3 N 4 playing a key role in enhancement of photocatalytic activity for several composites was reported in the documents. [38][39][40] The enhanced photocatalytic activity of g-C 3 N 4 -WO 3 composites was discussed in several reports.…”

Section: 42mentioning

confidence: 99%

“…[38][39][40] However, in those works, the composites were prepared by mixing WO 3 and g-C 3 N 4 in the two separate forms. In this work, g-C 3 N 4 -WO 3 composite was synthesized directly in which g-C 3 N 4 formed in the presence of WO 3 .…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Graphitic g-C₃N₄-WO₃Composite: Synthesis and Photocatalytic Properties

Doan¹,

Thi²,

Nguyen³

et al. 2014

Bulletin of the Korean Chemical Society

View full text Add to dashboard Cite

Graphitic g-C3N4-WO3 composite was synthesized simply by decomposing melamine in the presence of WO3 at 500 o C. The obtained material was characterized by XRD, SEM, IR and XPS. The results showed that the as-prepared composite exhibits orthorhombic WO3 phase coated by g-C3N4 and the g-C3N4 decomposed completely with N-doped WO3 remaining at elevated calcination temperatures. The photocatalytic activity of the composite was evaluated by the photodegradation of methylene blue under visible light. An enhancement in photocatalytic activity for the graphitic g-C3N4-WO3 composite compared to the conventional nitrogendoped WO3 was observed, which can be attributed to the presence of g-C3N4 in the material.

show abstract

Section: Resultsmentioning

confidence: 92%

Section: 40mentioning

confidence: 99%

Section: 42mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Graphitic g-C₃N₄-WO₃Composite: Synthesis and Photocatalytic Properties

Doan¹,

Thi²,

Nguyen³

et al. 2014

Bulletin of the Korean Chemical Society

View full text Add to dashboard Cite

show abstract

“…Moreover, in the synergism of WO 3 -g-C 3 N 4 , the former component helps to reduce the recombination rate of electron-hole pairs while the latter one enhances the active sites of the catalyst surface. 43,44 Herein, we have presented for the first time a morphology-based novel WO 3 -g-C 3 N 4 (1D/2D) synergetic hybrid system fabricated by a simple hydrothermal and annealing method which exhibited superior photocatalytic activity and stability for the degradation of RhB under visible light irradiation. It can be found that after mixing g-C 3 N 4 with WO 3 , the catalytic efficiency and photo stability of the WO 3 microrods were substantially improved.…”

Section: Introductionmentioning

confidence: 99%

The synergistic effect between WO₃ and g-C₃N₄ towards efficient visible-light-driven photocatalytic performance

et al. 2014

View full text Add to dashboard Cite

We have developed a facile, scaled up, efficient and morphology-based novel WO3-g-C3N4 photocatalyst with different mass ratios of WO3 and g-C3N4. It was used for the photodegradation of rhodamine B (RhB) under visible light irradiation and it showed excellent enhanced photocatalytic efficiency as compared to pure g-C3N4 and WO3. The apparent performance of the composite/hybrid was 3.65 times greater than pure WO3 and 3.72 times greater than pure g-C3N4 respectively, and it was also found to be much higher than the previously reported ones. Furthermore, the optical properties of composite samples were evaluated. The bandgap of composite samples lies in the range of 2.3-2.5 eV, which was favourable for photodegradation. The possible mechanism for enhanced catalytic efficiency of the WO3-g-C3N4 photocatalyst is discussed in detail. It was found that the enhanced performance is due to the synergistic effect between the WO3 and g-C3N4 interface, improved optical absorption in the visible region and suitable band positions of WO3-g-C3N4 composites. This journal is We have developed a facile, scaled up, efficient and morphology-based novel WO 3 -g-C 3 N 4 photocatalyst with different mass ratios of WO 3 and g-C 3 N 4 . It was used for the photodegradation of rhodamine B (RhB) under visible light irradiation and it showed excellent enhanced photocatalytic efficiency as compared to pure g-C 3 N 4 and WO 3 . The apparent performance of the composite/hybrid was 3.65 times greater than pure WO 3 and 3.72 times greater than pure g-C 3 N 4 respectively, and it was also found to be much higher than the previously reported ones. Furthermore, the optical properties of composite samples were evaluated. The bandgap of composite samples lies in the range of 2.3-2.5 eV, which was favourable for photodegradation. The possible mechanism for enhanced catalytic efficiency of the WO 3 -g-C 3 N 4 photocatalyst is discussed in detail. It was found that the enhanced performance is due to the synergistic effect between the WO 3 and g-C 3 N 4 interface, improved optical absorption in the visible region and suitable band positions of WO 3 -g-C 3 N 4 composites.

show abstract

Semiconductor Composites: Strategies for Enhancing Charge Carrier Separation to Improve Photocatalytic Activity

Marschall

2013

Adv Funct Materials

1,367

589

View full text Add to dashboard Cite

The formation of semiconductor composites comprising multicomponent or multiphase heterojunctions is a very effective strategy to design highly active photocatalyst systems. This review summarizes the recent strategies to develop such composites, and highlights the most recent developments in the field. After a general introduction into the different strategies to improve photocatalytic activity through formation of heterojunctions, the three different types of heterojunctions are introduced in detail, followed by a historical introduction to semiconductor heterojunction systems and a thorough literature overview. Special chapters describe the highly‐investigated carbon nitride heterojunctions as well as very recent developments in terms of multiphase heterojunction formation, including the latest insights into the anatase‐rutile system. When carefully designed, semiconductor composites comprising two or three different materials or phases very effectively facilitate charge separation and charge carrier transfer, substantially improving photocatalytic and photoelectrochemical efficiency.

show abstract

Facile synthesis of composite g-C3N4/WO3: a nontoxic photocatalyst with excellent catalytic activity under visible light

Cited by 97 publications

References 40 publications

Graphitic g-C₃N₄-WO₃Composite: Synthesis and Photocatalytic Properties

Graphitic g-C₃N₄-WO₃Composite: Synthesis and Photocatalytic Properties

The synergistic effect between WO₃ and g-C₃N₄ towards efficient visible-light-driven photocatalytic performance

Semiconductor Composites: Strategies for Enhancing Charge Carrier Separation to Improve Photocatalytic Activity

Contact Info

Product

Resources

About

Facile synthesis of composite g-C3N4/WO3: a nontoxic photocatalyst with excellent catalytic activity under visible light

Cited by 97 publications

References 40 publications

Graphitic g-C3N4-WO3Composite: Synthesis and Photocatalytic Properties

Graphitic g-C3N4-WO3Composite: Synthesis and Photocatalytic Properties

The synergistic effect between WO3 and g-C3N4 towards efficient visible-light-driven photocatalytic performance

Semiconductor Composites: Strategies for Enhancing Charge Carrier Separation to Improve Photocatalytic Activity

Contact Info

Product

Resources

About

Graphitic g-C₃N₄-WO₃Composite: Synthesis and Photocatalytic Properties

Graphitic g-C₃N₄-WO₃Composite: Synthesis and Photocatalytic Properties

The synergistic effect between WO₃ and g-C₃N₄ towards efficient visible-light-driven photocatalytic performance