Synthesis of g-C3N4/Ag3VO4 composites with enhanced photocatalytic activity under visible light irradiation

Zhu, Tingting; Song, Yanhua; Ji, Haiyan; Xu, Hui; Song, Yufei; Xia, Jiexiang; Yin, Shu; Li, Yeping; Zhang, Qi

doi:10.1016/j.cej.2015.02.018

Cited by 166 publications

(38 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Figure 2b, we can find that C1s peak centered at about 284 eV can be assigned the adventitious carbon depositing on the samples in the measurement. As for bare g-C3N4, the major peak of C1s centered at about 287.4 eV is ascribed to the coordination between carbon atoms and three nitrogen atoms in the g-C3N4 lattice [50,51]. Simultaneously, in Figure 2c, the asymmetrical N1s peaks could be fitted into three peaks centered at 398.2 eV, 399.6 eV, and 400.2 eV, indicating that there probably exist three kinds of coordination related with N species in the g-C3N4 sample.…”

Section: Phase Structure and Morphologymentioning

confidence: 97%

Ultrathin g-C3N4 Nanosheet-Modified BiOCl Hierarchical Flower-Like Plate Heterostructure with Enhanced Photostability and Photocatalytic Performance

Jia

Long

et al. 2017

Crystals

View full text Add to dashboard Cite

Abstract:A novel ultrathin g-C 3 N 4 nanosheet-modified BiOCl hierarchical flower-like plate heterostructure (abbreviated as BC/CN) was constructed via a thermal polymerization of urea precursor followed with hydrolysis route. The as-prepared samples were well characterized by various analytical techniques. The morphological observation showed that hierarchical flower-like BiOCl nanoplates were discretely anchored on the surface of ultra-thin C 3 N 4 nanosheets. The photocatalytic performance of the as-prepared photocatalysts was evaluated by degradation of methylene blue (MB) under visible-light irradiation. The results showed that BC/CN photocatalyst exhibited enhanced photostability and photocatalytic performance in the degradation process. On the basis of experimental results and the analysis of band energy structure, it could be inferred that the enhanced photocatalytic performance of BC/CN photocatalyst was intimately related with the hybridization of hierarchical flower-like BiOCl nanoplates with ultrathin g-C 3 N 4 nanosheets, which provided good adsorptive capacity, extended light absorption, suppressed the recombination of photo-generated electron-hole pairs, and facilitated charge transfer efficiently.

show abstract

Section: Phase Structure and Morphologymentioning

confidence: 97%

Ultrathin g-C3N4 Nanosheet-Modified BiOCl Hierarchical Flower-Like Plate Heterostructure with Enhanced Photostability and Photocatalytic Performance

Jia

Long

et al. 2017

Crystals

View full text Add to dashboard Cite

show abstract

“…To illuminate the effect of heterostructure on photocatalytic activity, the energy band structure was investigated. The valence band (VB) and conduction band (CB) potentials of semiconductors at the point of zero charge can be estimated by eqs (6) and (7), respectively [54].…”

Section: Possible Mechanism Of Enhanced Photoactivity Of the Bi 2 S 3mentioning

confidence: 99%

Facile fabrication of Bi2S3/SnS2 heterojunction photocatalysts with efficient photocatalytic activity under visible light

Xiao-min

Huang

Gao

et al. 2016

Journal of Alloys and Compounds

View full text Add to dashboard Cite

a b s t r a c tIn this work, Bi 2 S 3 /SnS 2 heterojunction photocatalysts were prepared by combining a hydrothermal technique and a facile in situ growth method. The nanocomposites were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, inductively coupled plasma spectroscopy, X-ray photoelectron spectroscopy, UVeVis diffusion reflectance spectroscopy and roomtemperature photoluminescence spectra. Their photocatalytic performances were evaluated by degrading methyl orange (MO) in aqueous solution (50 mg/L) under visible light (l > 420 nm) irradiation. It was found that when the mass percentage of Bi 2 S 3 in Bi 2 S 3 /SnS 2 was 7.95 wt%, the as-prepared Bi 2 S 3 / SnS 2 nanocomposite showed the best photocatalytic activity for the degradation of MO. The highly improved performance of the Bi 2 S 3 /SnS 2 nanocomposite was mainly ascribed to the efficient charge separation.

show abstract

“…In order to further investigate the primary active species involved in the process and possible photodegradation mechanism, the effects of scavengers on the degradation of RhB, MB over g-C 3 N 4 /CuS-2 was examined. Ethylenediaminetetraacetic acid disodium salt (EDTA2Na), benzoquinone (BQ) and tert-butyl alcohol (TBA) used as the scavenger of hole (h + ), superoxide radical ( Å O 2À ) and hydroxyl radical ( Å OH), respectively [36][37][38]. As shown in Fig.…”

Section: Possible Photocatalytic Mechanism Of G-c 3 N 4 /Cus Nanocompmentioning

confidence: 99%

Facile fabrication of novel porous graphitic carbon nitride/copper sulfide nanocomposites with enhanced visible light driven photocatalytic performance

Chen

et al. 2016

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

In this work, a novel organic-inorganic heterostructured photocatalyst: porous graphitic carbon nitride (g-C3N4) hybrid with copper sulfide (CuS) had been synthesized via a precipitation-deposition method at low temperature for the first time. UV-vis spectroscopy revealed the porous g-C3N4/CuS nanocomposites showed a strong and broad visible light absorption. Furthermore, the g-C3N4/CuS nanocomposites showed higher photocatalytic activity in the photodegradation of various organic dyes than that of pure g-C3N4 and CuS, and the selected sample of g-C3N4/CuS-2 exhibited the best photocatalytic activity under visible light. The good photocatalytic activity could be ascribed to the matching of the g-C3N4 and CuS band gap energies. Besides, photoluminescent spectra and photoelectrochemical measurements also proved that the CuS/g-C3N4 could greatly enhance the charge generation and suppress the charge recombination of photogenerated carriers. According to the experimental result, a possible photocatalytic mechanism has been proposed. Due to the high stability, the porous g-C3N4/CuS could be applied in the field of environmental remediation. Our work highlights that coupling semiconductors with well-matched band energies provides a facile way to improve the photocatalytic activity.

show abstract

Synthesis of g-C3N4/Ag3VO4 composites with enhanced photocatalytic activity under visible light irradiation

Cited by 166 publications

References 56 publications

Ultrathin g-C3N4 Nanosheet-Modified BiOCl Hierarchical Flower-Like Plate Heterostructure with Enhanced Photostability and Photocatalytic Performance

Ultrathin g-C3N4 Nanosheet-Modified BiOCl Hierarchical Flower-Like Plate Heterostructure with Enhanced Photostability and Photocatalytic Performance

Facile fabrication of Bi2S3/SnS2 heterojunction photocatalysts with efficient photocatalytic activity under visible light

Facile fabrication of novel porous graphitic carbon nitride/copper sulfide nanocomposites with enhanced visible light driven photocatalytic performance

Contact Info

Product

Resources

About