Rare Earth Oxide-Treated Fullerene and Titania Composites with Enhanced Photocatalytic Activity for the Degradation of Methylene Blue

Meng, Zhen; Zhu, Lihua; Choi, Jong-Geun; Park, Chong-Yeon; Oh, Won‐Chun

doi:10.1016/s1872-2067(10)60258-6

Cited by 8 publications

(7 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 4 shows all of the peaks around 2 θ of 25.4°, 42°, and 49.6°, which could be indexed to the characteristic peaks (111), (220), and (311) plane reflections of cubic crystal structure CdSe with a lattice constant of 6.05 Å (JCPDS 65–2891) [21,22]. Moreover, with the CdSe-TiO 2 photocatalyst, some peaks were also found at 37.9°, 47.8°, 55°, and 62.7°, which could be indexed to the characteristic peaks (004), (200), (201), and (204) of anatase TiO 2 (JCPDS 21–1272) [23,24]. No peaks for impurities were detected.…”

Section: Resultsmentioning

confidence: 99%

Fullerene modification CdSe/TiO2 and modification of photocatalytic activity under visible light

et al. 2013

Self Cite

View full text Add to dashboard Cite

CdSe, CdSe-TiO2, and CdSe-C60/TiO2 composites were prepared using sol–gel method, and their photocatalytic activity was evaluated by measuring the degradation of rhodamine B solutions under visible light. The surface area, surface structure, crystal phase, and elemental identification of these composites were characterized by nitrogen adsorption isotherms, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), and UV-visible (vis) absorption spectrophotometry. XRD showed that the CdSe-C60/TiO2 composite contained a typical single and clear anatase phase. SEM of the CdSe-C60/TiO2 composites revealed a homogenous composition in the particles. EDX revealed the presence of C and Ti with strong Cd and Se peaks in the CdSe-C60/TiO2 composite. The degradation of dye was determined by UV–vis spectrophotometry. An increase in photocatalytic activity was observed and attributed to an increase in the photoabsorption effect by fullerene and the cooperative effect of the CdSe. The repeatability of photocatalytic activity was also tested in order to investigate the stability of C60 and CdS-C60/TiO2 composites.

show abstract

Section: Resultsmentioning

confidence: 99%

Fullerene modification CdSe/TiO2 and modification of photocatalytic activity under visible light

et al. 2013

Self Cite

View full text Add to dashboard Cite

show abstract

“…After adsorption in the dark for 2 h, all the samples reached adsorption-desorption equilibrium [27]. Figure 6 shows the adsorptive and degradation effect of photocatalysts for MO.…”

Section: Methodsmentioning

confidence: 99%

“…Two steps are involved in the photocatalytic decomposition of dyes, the adsorption of dye molecules, and their degradation. After adsorption in the dark for 2 h, all the samples reached adsorption-desorption equilibrium [ 27 ]. Figure 6 shows the adsorptive and degradation effect of photocatalysts for MO.…”

Section: Methodsmentioning

confidence: 99%

Preparation, characterization and photocatalytic behavior of WO3-fullerene/TiO2 catalysts under visible light

et al. 2011

Self Cite

View full text Add to dashboard Cite

WO3-treated fullerene/TiO2 composites (WO3-fullerene/TiO2) were prepared using a sol-gel method. The composite obtained was characterized by BET surface area measurements, X-ray diffraction, scanning electron microscopy, energy dispersive X-ray analysis, transmission electron microscopy, and UV-vis analysis. A methyl orange (MO) solution under visible light irradiation was used to determine the photocatalytic activity. Excellent photocatalytic degradation of a MO solution was observed using the WO3-fullerene, fullerene-TiO2, and WO3-fullerene/TiO2 composites under visible light. An increase in photocatalytic activity was observed, and WO3-fullerene/TiO2 has the best photocatalytic activity; it may attribute to the increase of the photo-absorption effect by the fullerene and the cooperative effect of the WO3.

show abstract

“…This is because that a variety of intermediate products with superior stability and great toxicity also could be produced in the treatment process, resulting in an increased treatment cost. 11,12 Therefore, many researchers are working on exploring the new technologies to overcome these deficiencies. Recently, photocatalysis has been paid much attention due to its high degradation ability, low cost, and low toxicity.…”

Section: Introductionmentioning

confidence: 99%

Designing effective and stable S‐scheme RGO/AgVO₃/AgBr hybrid with enhanced photocatalytic performance

et al. 2021

View full text Add to dashboard Cite

The low separation of photogenerated electron-hole pairs and cycle stability has been the main bottleneck which restricts the development of photocatalytic technology for water purification. Here, RGO/AgVO 3 composites were fabricated by photoultrasonic assisted reduction method, and AgBr nanoparticles were assembled on the surface of RGO/AgVO 3 via an in situ ion exchange method. A series of characterization and experimental results indicated that the introduction of RGO influenced the growth of crystal phase for AgVO 3 nanorods, resulting that AgVO 3 nanorods became thicker and shorter with the increase in RGO content. Moreover, RGO could also work as a bridge to promote the migration of electrons, leading different improvement for photocatalytic activity. Furthermore, in situ growth of AgBr on the surface of AgVO 3 nanorods could prevent its agglomeration and exfoliation, thus improving the photocatalytic activity and cycle stability of composites. RGO 1% /AgVO 3 /AgBr 30% exhibited excellent photocatalytic activity and stability for methylene blue (MB) degradation due to its unique structure, and its removal ratio reached at 96.2% within 50 min. Meanwhile, the separation of photogenerated electron-hole pairs of AgVO 3 was markedly improved due to the introduction of RGO and AgBr. Based on the trapping experiments and theoretical calculation of band gap, a possible S-scheme photocatalytic mechanism for improved photocatalytic activity was proposed.

show abstract

Rare Earth Oxide-Treated Fullerene and Titania Composites with Enhanced Photocatalytic Activity for the Degradation of Methylene Blue

Cited by 8 publications

References 39 publications

Fullerene modification CdSe/TiO2 and modification of photocatalytic activity under visible light

Fullerene modification CdSe/TiO2 and modification of photocatalytic activity under visible light

Preparation, characterization and photocatalytic behavior of WO3-fullerene/TiO2 catalysts under visible light

Designing effective and stable S‐scheme RGO/AgVO₃/AgBr hybrid with enhanced photocatalytic performance

Contact Info

Product

Resources

About

Rare Earth Oxide-Treated Fullerene and Titania Composites with Enhanced Photocatalytic Activity for the Degradation of Methylene Blue

Cited by 8 publications

References 39 publications

Fullerene modification CdSe/TiO2 and modification of photocatalytic activity under visible light

Fullerene modification CdSe/TiO2 and modification of photocatalytic activity under visible light

Preparation, characterization and photocatalytic behavior of WO3-fullerene/TiO2 catalysts under visible light

Designing effective and stable S‐scheme RGO/AgVO3/AgBr hybrid with enhanced photocatalytic performance

Contact Info

Product

Resources

About

Designing effective and stable S‐scheme RGO/AgVO₃/AgBr hybrid with enhanced photocatalytic performance