Phenol Abatement by Titanium Dioxide Photocatalysts: Effect of The Graphene Oxide Loading.

Nanomaterials (Basel) 2019 Jun 29;9(7). Epub 2019 Jun 29.

Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark.

Hetero-photocatalytic graphene-TiO materials have, in the literature, been found to possess better photocatalytic activity for environmental applications compared to pure TiO. These types of materials can be prepared in different ways; however, their photocatalytic performance and quality are not easily controlled and reproduced. Therefore, we synthetized graphene oxide-TiO nanoparticles by sol-gel reaction from TiCl, as precursor, with two different methods of synthesis and with a graphene oxide (GO) loading ranging from 0 to 1.0. This approach led to a good adhesion of GO to TiO through the Ti-O-C bonding, which could enhance the photocatalytic performances of the materials. Overall, 0.05 wt % GO loading gave the highest rate in the photodegradation of phenol under visible light, while higher GO loadings had a negative impact on the photocatalytic performances of the composites. The 0.05 wt % GO-TiO composite material was confirmed to be a promising photocatalyst for water pollutant abatement. The designed synthetic approach could easily be implemented in large-scale production of the GO-TiO coupling materials.

Download full-text PDF

Source
http://dx.doi.org/10.3390/nano9070947DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6669876PMC
June 2019

Publication Analysis

Top Keywords

graphene oxide
8
photocatalytic performances
8
oxide loading
8
enhance photocatalytic
4
bonding enhance
4
adhesion tio
4
ti-o-c bonding
4
tio ti-o-c
4
performances materials
4
rate photodegradation
4
photodegradation phenol
4
highest rate
4
loading highest
4
materials 005
4
005 loading
4
good adhesion
4
approach led
4
nanoparticles sol-gel
4
sol-gel reaction
4
oxide-tio nanoparticles
4

References

(Supplied by CrossRef)

2017

Anku et al.
2017

Similar Publications