Photocatalytic degradation of phenanthrene by graphite oxide-TiO2-Sr(OH)2/SrCO3 nanocomposite under solar irradiation: Effects of water quality parameters and predictive modeling

Fu, Jie; Kyzas, George Z.; Cai, Zhengqing; Deliyanni, Eleni A.; Liu, Wen; Zhao, Dongye

doi:10.1016/j.cej.2017.10.163

Cited by 95 publications

(23 citation statements)

References 52 publications

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“…For the FTIR spectra of TiO 2 /GO-8 and TiO 2 /rGO nanocomposites, the broad band at 460.22 cm À1 was originated from the stretching Ti-O-C. 40 Besides, the absorption band near 523 cm À1 corresponded to the Ti-O vibration. 41 Furthermore, peak strength of TiO 2 /rGO nanocomposites is lower than TiO 2 /GO nanocomposites and some of the peaks even disappear. From the FTIR spectrum of TiO 2 /rGO nanocomposites, few peaks indicating the oxygen-containing functional groups can be seen aer reduction.…”

Section: Resultsmentioning

confidence: 97%

Synthesis and characterization of TiO₂/graphene oxide nanocomposites for photoreduction of heavy metal ions in reverse osmosis concentrate

et al. 2018

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Section: Resultsmentioning

confidence: 97%

Synthesis and characterization of TiO₂/graphene oxide nanocomposites for photoreduction of heavy metal ions in reverse osmosis concentrate

et al. 2018

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“…Furthermore, two well-defined absorption bands also appear in the fingerprint region. This clearly originates from both the Ti–O–C stretching and the Ti–O–Ti vibration, generally occurring at 460 cm −1 and 530 cm −1 , respectively [ 53 ]. Such features definitively confirm the TiO 2 particles are chemically bonded to GO nanoplatelets, thus clearly proving the successful functionalization of graphene oxide embedded with TiO 2 nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

Titanium Dioxide Grafted on Graphene Oxide: Hybrid Nanofiller for Effective and Low-Cost Proton Exchange Membranes

et al. 2020

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A nanostructured hybrid material consisting of TiO2 nanoparticles grown and stabilized on graphene oxide (GO) platelets, was synthesized and tested as nanofiller in a polymeric matrix of sulfonated polysulfone (sPSU) for the preparation of new and low-cost nanocomposite electrolytes for proton exchange membrane fuel cell (PEMFC) applications. GO-TiO2 hybrid material combines the nanoscale structure, large interfacial area, and mechanical features of a 2D, layered material, and the hygroscopicity properties of ceramic oxides, able to maintain a suitable hydration of the membrane under harsh fuel cell operative conditions. GO-TiO2 was synthetized through a new, simple, one-pot hydrothermal procedure, while nanocomposite membranes were prepared by casting using different filler loadings. Both material and membranes were investigated by a combination of XRD, Raman, FTIR, thermo-mechanical analysis (TGA and Dynamic Mechanical Analysis) and SEM microscopy, while extensive studies on the proton transport properties were carried out by Electrochemical Impedance Spectroscopy (EIS) measurements and pulse field gradient (PFG) NMR spectroscopy. The addition of GO-TiO2 to the sPSU produced a highly stable network, with an increasing of the storage modulus three-fold higher than the filler-free sPSU membrane. Moreover, the composite membrane with 3 wt.% of filler content demonstrated very high water-retention capacity at high temperatures as well as a remarkable proton mobility, especially in very low relative humidity conditions, marking a step ahead of the state of the art in PEMs. This suggests that an architecture between polymer and filler was created with interconnected routes for an efficient proton transport.

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“…The use of an efficient nanoparticulate semiconductor is required for the detoxification of the wastewater via photocatalysis, which has the potential to degrade the toxic substances in the water, such as contaminants and microorganisms [111][112][113]. Due to their narrow bandgap and distinct electronic structure (unoccupied conduction band and occupied valence band) [20,114,115], various kinds of photocatalysts, including TiO 2 , Gr-TiO 2 , CdS, SnO 2 , WO 3 , SiO 2 , ZnO, Nb 2 O 3 , Fe 2 O 3 , have been studied to degrade a variety of organic and inorganic pollutants [102,[115][116][117].…”

Section: Methods Of Treatmentmentioning

confidence: 99%

TiO2 Photocatalysis for the Transformation of Aromatic Water Pollutants into Fuels

et al. 2021

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The growing world energy consumption, with reliance on conventional energy sources and the associated environmental pollution, are considered the most serious threats faced by mankind. Heterogeneous photocatalysis has become one of the most frequently investigated technologies, due to its dual functionality, i.e., environmental remediation and converting solar energy into chemical energy, especially molecular hydrogen. H2 burns cleanly and has the highest gravimetric gross calorific value among all fuels. However, the use of a suitable electron donor, in what so-called “photocatalytic reforming”, is required to achieve acceptable efficiency. This oxidation half-reaction can be exploited to oxidize the dissolved organic pollutants, thus, simultaneously improving the water quality. Such pollutants would replace other potentially costly electron donors, achieving the dual-functionality purpose. Since the aromatic compounds are widely spread in the environment, they are considered attractive targets to apply this technology. In this review, different aspects are highlighted, including the employing of different polymorphs of pristine titanium dioxide as photocatalysts in the photocatalytic processes, also improving the photocatalytic activity of TiO2 by loading different types of metal co-catalysts, especially platinum nanoparticles, and comparing the effect of various loading methods of such metal co-catalysts. Finally, the photocatalytic reforming of aromatic compounds employing TiO2-based semiconductors is presented.

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Photocatalytic degradation of phenanthrene by graphite oxide-TiO2-Sr(OH)2/SrCO3 nanocomposite under solar irradiation: Effects of water quality parameters and predictive modeling

Cited by 95 publications

References 52 publications

Synthesis and characterization of TiO₂/graphene oxide nanocomposites for photoreduction of heavy metal ions in reverse osmosis concentrate

Synthesis and characterization of TiO₂/graphene oxide nanocomposites for photoreduction of heavy metal ions in reverse osmosis concentrate

Titanium Dioxide Grafted on Graphene Oxide: Hybrid Nanofiller for Effective and Low-Cost Proton Exchange Membranes

TiO2 Photocatalysis for the Transformation of Aromatic Water Pollutants into Fuels

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Photocatalytic degradation of phenanthrene by graphite oxide-TiO2-Sr(OH)2/SrCO3 nanocomposite under solar irradiation: Effects of water quality parameters and predictive modeling

Cited by 95 publications

References 52 publications

Synthesis and characterization of TiO2/graphene oxide nanocomposites for photoreduction of heavy metal ions in reverse osmosis concentrate

Synthesis and characterization of TiO2/graphene oxide nanocomposites for photoreduction of heavy metal ions in reverse osmosis concentrate

Titanium Dioxide Grafted on Graphene Oxide: Hybrid Nanofiller for Effective and Low-Cost Proton Exchange Membranes

TiO2 Photocatalysis for the Transformation of Aromatic Water Pollutants into Fuels

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Product

Resources

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Synthesis and characterization of TiO₂/graphene oxide nanocomposites for photoreduction of heavy metal ions in reverse osmosis concentrate

Synthesis and characterization of TiO₂/graphene oxide nanocomposites for photoreduction of heavy metal ions in reverse osmosis concentrate