GdVO4 modified fluorine doped graphene nanosheets as dispersed photocatalyst for mitigation of phenolic compounds in aqueous environment and bacterial disinfection

By P. Shandilya, D. Mittal, Anita Sudhaik, Mahesh Soni, P. Raizada, A. Saini, Pardeep Singh. Separation and Purification Technology, 2019

152 citations recorded by the source corpus.

Abstract The agglomeration of graphene based photocatalysts is major bottleneck for their applicability in slurry type photoreactors. In this work, we have prepared fluorine doped graphene (FG) as high dispersed adsorbent by sonochemical exfoliation method. GdVO4 nanoparticles were anchored on FG to fabricate GdVO4/FG photocatalyst. The high-dispersion of FG and GdVO4/FG was ascertained by zeta potential measurements and Tyndall effect. The atomic force microscope analysis depicted that thickness of FG and GdVO4/FG was less than 2.0 nm. The band gap of GdVO4/FG was 2.1 eV. The high surface area of GdVO4/FG was suited for adsorption coupled photocatalysis involving mineralization of phenol and 2, 4-dinitrophenol (DNP) in aqueous medium. The photodegradation process followed pseudo first order kinetics. The simultaneous adsorption and photocatalysis was most efficient process for degradation of selected phenolic compounds. Under visible light, both phenol and DNP mineralized in 7 and 9 h, respectively. The high performance liquid chromatography and mass spectrometry confirmed the formation of intermediate during degradation process which ultimately mineralized into CO2 and H2O. The photocatalytic activity of GdVO4/FG was also tested for bacterial disinfection of Pseudomonas fluorescence, Staphylococcus aureus, Streptococcus enterica, Bacillus subtilis and Escherichia coli bacteria. The oxidative radical species OH and O2 −played vital role in photodegradation and disinfection process. Due to high dispersion and recyclability, GdVO4/FG could be used as an efficient photocatalyst for removal of both biotic and abiotic pollutants present in water.

Subfields: Biomedical Engineering, Electrical and Electronic Engineering, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/d0303a381533251abadabb08bbbf3cc1a28ad0cf

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Biomedical Engineering

1. P. Raizada
2. Pardeep Singh
3. Ahmad Hosseini-Bandegharaei
4. Anita Sudhaik
5. V. Thakur

In Electrical and Electronic Engineering

1. Ahmad Hosseini-Bandegharaei
2. P. Raizada
3. Pardeep Singh
4. Anita Sudhaik

In Renewable Energy, Sustainability and the Environment

1. P. Raizada
2. Pardeep Singh
3. Ahmad Hosseini-Bandegharaei
4. V. Thakur
5. V. Hasija
6. Anita Sudhaik
7. K. Sharma
8. Abhinandan Kumar

Citations in the corpus

• Recent advances in noble metal free doped graphitic carbon nitride based nanohybrids for photocatalysis of organic contaminants in water: A review (2019, background): “The photocatalytic technology has also focused on catalytic activity of many other semiconductor metal oxides including ZnO, CaO, ZnWO4, WO3, Nb2O5, BiTiO3, SrTiO3, Fe2O3,Ag2CO3,BiOBr, BiOCl, BiOI, BiVO4, Ag3PO4, ZrO2, CaFe2O4, MnFe2O4, ZnFe2O4, BiFe2O4, CoFe2O4, Bi2WO6, Bi20T20, TaON, etc [28-42].”
• Magnetically separable ZnO/ZnFe2O4 and ZnO/CoFe2O4 photocatalysts supported onto nitrogen doped graphene for photocatalytic degradation of toxic dyes (2020, background): “Graphene has high chemical stability, large theoretical surface area (2630 m(2) g (1)), mechanical flexibility (1060 GPa), and spacious delocalized p-bonds which increase its conductivity (3000 W m 1 K (1)) and stability (Nasr et al., 2018; Shandilya et al., 2019; Xue et al., 2015).”