High-efficiency removal of rhodamine B dye in water using g-C3N4 and TiO2 co-hybridized 3D graphene aerogel composites

The use of acid mud produced during the aluminum extraction of kaolinite to synthesize mobil composition of matter no. 41 (MCM‐41) type material is proposed in this work. The acid mud was placed in contact with NaOH at 550°C to release the silicon and aluminum, then the fused material obtained was mixed with cetyltrimethylammonium bromide (CTAB) followed by a hydrothermal treatment considering a factorial design 2k with four experimental factors (CTAB dose, synthesis time, temperature, and solid/liquid ratio). The formation of MCM‐41 was evaluated via X‐ray diffraction (XRD) and scanning electron microscopy coupled with electrons dispersive spectroscopy (SEM‐EDS) analysis complemented with surface area analysis from which a maximum value of 550 m2/g was obtained for the best material. XRD results showed the typical pattern of MCM‐41 measured at low angle, furthermore, the characteristic type IV isotherm of adsorption–desorption was observed in certain materials. The elemental analysis showed the presence of iron and titanium oxide, which could be of great interest for the use of the material as a photocatalyst. Preliminary tests, using the MCM‐41 samples synthesized and methyl orange revealed a moderate photocatalytic activity of the material as compared to a commercial product (P25); opening up opportunities for the further development of such materials as potential and cost‐effective photocatalysts for pollutants degradation in wastewater. © 2018 American Institute of Chemical Engineers Environ Prog, 38:e13069, 2019

show abstract

“…. Supporting Information Table S3 displays the kinetic parameters for each case being in accord to other works .…”

Section: Resultsmentioning

confidence: 99%

Synthesis of MCM‐41 material from acid mud generated in the aluminum extraction of kaolinite mineral

Coutiño-González

Rocha

Robles

et al. 2018

Env Prog and Sustain Energy

View full text Add to dashboard Cite

show abstract

“…As imilar method combinedw ith freeze drying has been used to fabricate aG CN-TiO 2 -graphenea erogel (GCN-TiO 2 -GA) composite. [60] The catalystd emonstratesr emarkable visible-light activity in the decolorization of RhB (over 98 %) and excellent stability( almost 76 %a fter four cycles).W ue tal. [61] use rGO to improvet he photocatalytic activity of GCN/TiO 2 and fabricate ternary composites by a liquid-precipitation strategy.T he activity of the catalyst consistingo fG CN/TiO 2 with 10 wt %r GO is 3.2 and 4.7 times higherc ompared to GCN/TiO 2 and GCN for the degradationo f MB under simulateds olar light, respectively.T he ternary GCN-TiO 2 /rGO composite shows remarkable photocatalytic performance in H 2 evolution.…”

Section: Graphitic Carbon Nitride/titanium Dioxide/ Graphene/carbon Nmentioning

confidence: 95%

“…[57,[59][60][61][62] The carbon support acts as ar epository,i nw hich electrons are captured, transported, and accumulated. [57,[59][60][61][62] The carbon support acts as ar epository,i nw hich electrons are captured, transported, and accumulated.…”

Section: Graphitic Carbon Nitride/titanium Dioxide/ Graphene/carbon Nmentioning

confidence: 99%

“…[57,[59][60][61][62] The carbon support acts as ar epository,i nw hich electrons are captured, transported, and accumulated. [60] The catalystd emonstratesr emarkable visible-light activity in the decolorization of RhB (over 98 %) and excellent stability( almost 76 %a fter four cycles).W ue tal. GCN/TiO 2 /CNT ternary composites with different contents of CNTs ( Figure 6a,b) [62] disclose the fabrication of the GCN/TNT/CNT (TNT-TiO 2 nanotubular structure) composite.…”

Section: Graphitic Carbon Nitride/titanium Dioxide/ Graphene/carbon Nmentioning

confidence: 99%

“…Moreover,i ti sa ssumed that the immobilization of carbon materials onto GCN/TiO 2 composites can further improvet he photocatalytic activity. [57,[59][60][61][62] The carbon support acts as ar epository,i nw hich electrons are captured, transported, and accumulated. Amongd ifferent types of carbonaceous materials, CNTsh ave attracted significant attention owing to their p-conjugated structure.…”

Section: Graphitic Carbon Nitride/titanium Dioxide/ Graphene/carbon Nmentioning

confidence: 99%

See 2 more Smart Citations

Graphitic Carbon Nitride and Titanium Dioxide Modified with 1 D and 2 D Carbon Structures for Photocatalysis

et al. 2018

View full text Add to dashboard Cite

Enhancing the photocatalytic performance of graphitic carbon nitride (g-C N , GCN) and titanium dioxide (TiO ) has played a key role in the energy and environmental protection research community. Therefore, it is necessary to explore the synergy of both materials with carbon nanostructures for photocatalysis. Among the variety of carbon materials, graphene flakes and nanotubes, as nanoadditives to improve electron charge transfer and the optical absorption behavior in the visible-light region, have been widely explored. Thus, flake-like (2 D) and tubular (1 D) carbon structures in composition with GCN and/or TiO are reviewed, as are their photocatalytic response. Current trends clearly indicate that this type of molecular hybrids can be efficiently exploited in this field. This Minireview covers state-of-the-art research over the period of 2015 to 2018.

show abstract

Graphitic Carbon Nitride‐Based Nanostructured Materials for Photocatalytic Applications

Theerthagiri

Duraimurugan

Madhavan

2019

Photocatalytic Functional Materials for Environmental Remediation

View full text Add to dashboard Cite

High-efficiency removal of rhodamine B dye in water using g-C3N4 and TiO2 co-hybridized 3D graphene aerogel composites

Cited by 70 publications

References 45 publications

Synthesis of MCM‐41 material from acid mud generated in the aluminum extraction of kaolinite mineral

Synthesis of MCM‐41 material from acid mud generated in the aluminum extraction of kaolinite mineral

Graphitic Carbon Nitride and Titanium Dioxide Modified with 1 D and 2 D Carbon Structures for Photocatalysis

Graphitic Carbon Nitride‐Based Nanostructured Materials for Photocatalytic Applications

Contact Info

Product

Resources

About