Carbon nanotubes/TiO2 nanotubes composite photocatalysts for efficient degradation of methyl orange dye

Highly effective and stable Ag3PO4–WO3/MWCNTs photocatalysts for simultaneous Cr(VI) reduction and orange II degradation under visible light irradiation

“…3b, the diffraction peaks of (0 0 1), (0 2 0), (2 0 0), (1 2 0), (1 1 1), (2 0 1 Fig. 3h shows the XRD pattern of MWCNTs, indicating that the MWCNTs clearly display a primary peak at around 26 • , which can be indexed to the reflection (0 0 2) of graphite, and the next peak at 42 • corresponding to the (100) plane of graphite [37]. Nevertheless, the apparent diffraction peaks of MWCNTs are not discerned in the patterns of the Ag 3 PO 4 -WO 3 /MWCNTs composites, which is due to the trace amount of the loaded MWCNTs.…”

Synthesis and characterization of carbon modified TiO2 nanotube and photocatalytic activity on methylene blue under sunlight

“…Valcárcel et al [18] reported that the extraction performance of the c-TNTs under a microextraction format, c-TNTs provided better results than the other nanoparticles, especially at low acidic pH values. Jiang et al [19] prepared a series of carbon nanotubes/TiO 2 nanotubes (CNTs/TNTs) composite photocatalysts by incorporation of CNTs in HNO 3 washing process, the results show that the CNTs/TNTs composite exhibits much higher photocatalytic activity than that of the TNTs or CNTs alone. Feng et al [20] fabricated carbon/TiO 2 nanocomposites by a simple one-step carbonization method with different polymers as precursors, the results show that the carbon on the surface plays more important role in the photocatalytic process.…”

Sol–gel synthesis of photoactive kaolinite-titania: Effect of the preparation method and their photocatalytic properties

“…Recently, heterogeneous catalysis by semiconductors has attracted many researchers due to its promising effectiveness in degrading toxic pollutants for environmental cleanup and water purification. TiO 2 is a chemically inert, non-toxic, highly oxidative and cost-effective metal oxide; vital attributes for heterogeneous catalysis and solar energy conversion materials [1][2][3][4][5][6][7][8]. Therefore, various metal oxide semiconductors such as TiO 2 , SiO 2 -TiO 2 and ZrO 2 -TiO 2 have been widely used due to their unique optical and electronic properties [9][10][11].…”