The effect of graphitized carbon on the adsorption and photocatalytic degradation of methylene blue over TiO₂/C composites

Abstract

The TiO2/C composites with approximately 40 wt% of carbon were prepared by calcination of precursors, formed from a one-pot liquid phase reaction between Ti(SO4)2 and flour.

Efficient Visible-Light Photocatalysis and Antibacterial Activity of TiO2-Fe3C-Fe-Fe3O4/Graphitic Carbon Composites Fabricated by Catalytic Graphitization of Sucrose Using Natural Ilmenite

“…Moreover, the D band is attributed to the breathing modes of sp 2 atoms in hexagons. − The band that appears between the D and G bands is due to both sp 2 and sp 3 carbons that are not crystallized. It also occurs because of the hydrogen and oxygen in carbon. ,, …”

“…It also occurs because of the hydrogen and oxygen in carbon. 46,49,50 The pain parameter calculated to determine the crystallinity of carbon is the intensity ratio of the D and G bands (I D /I G ), where the intensity represents the molecular vibrations entailed in the Raman process. Defects in two-dimensional (2D) lattices are categorized into two: zero-dimensional (0D) and onedimensional (1D) defect.…”

“…47 Graphene-based adsorbents have been used to adsorb heavy metals 48 and dyes. 12 Composites enriched with graphitic carbon have not been popularly studied for dye adsorption, photocatalysis, and solar cells 44,49,50 although g-C 3 N 4 has been coupled to many materials widely researched such as Ce 3+ /g-C 3 N 4 , 51 BiOI sheet-stacked g-C 3 N 4 , 52 and P-doped MoS 2 /g-C 3 N 4 . 53 Subsequently, we became interested in fabricating graphitic carbon-based new composites consisting of TiO 2 , Fe 3 C, Fe, and Fe 3 O 4 nanoparticles using natural ilmenite sand and sucrose as the raw materials to remove and degrade methylene blue in the water.…”

Noticeably Improved Visible Light Photocatalytic Activity of TiO2 Nanoparticles through co‐Doping of Activated Charcoal and Fe Towards Methylene Blue Degradation

“…Nevertheless, to find the more role of AC on the photocatalytic activity of TiO 2 , a separate work with different concentrations of AC dopants is needed to qualitatively measure the adsorption ability of AC. 2.96 MB 94.7 120 CeO 2 -ZnO [31] 3.28 MB 100 30 rGO-ZnO [12] 3.36 MB 93.4 60 TiO 2 -C [32] NA MB 80.…”

Structural engineering of BiOBr nanosheets for boosted photodegradation performance toward rhodamine B

“…6–8 Thus, design of visible-light-driven photocatalysts with high charge separation efficiency and outstanding photocatalytic activity will play a key role for practical demand. Up to now, the widely exploited semiconductor photocatalysts mainly focused on metal oxides, modified metal oxides and sulfides such as TiO 2 , 9 ZnO, 10 BiOBr/Fe 3 O 4 @SiO 2 , 11 Bi 4 O 5 Br 2 /g-C 3 N 4 , 12 BiOCl@CeO 2 , 13 S-doped ZnO, 14 TiO 2 /C, 15 S/Cl-C 3 N 4 . 16 Unfortunately, high recombination rate of electron–hole pairs, photocorrosion and limited visible light photo-absorptivity restrict its practical application.…”