Solar light driven photocatalytic degradation of Ofloxacin based on ultra-thin bismuth molybdenum oxide nanosheets

Journal Article · Thu Mar 15 04:00:00 EDT 2018 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2017.11.033· OSTI ID:22805463

Gupta, Girish ^[1]; Umar, Ahmad ^[2]; Kaur, Amandeep ^[1]; Sood, Swati ^[3]; Dhir, Amit

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1. Dr. S. S. Bhatnagar University Institute of Chemical Engineering & Technology, Panjab University, Chandigarh, 160014 (India)
2. Department of Chemistry, Faculty of Science and Arts and Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 1001 (Saudi Arabia)
3. Department of Chemistry, Panjab University, Chandigarh, 160014 (India)

Highlights: • Facile synthesis of ultra-thin Bi{sub 2}MoO{sub 6} nanosheets. • Solar-light driven photocatalytic degradation of antibiotic Ofloxacin. • Almost 70% photocatalytic degradation of Ofloxacin under optimized conditions. - Abstract: Herein, we report the facile synthesis, characterization and solar-light driven photocatalytic degradation of ultra-thin bismuth molybdenum oxide (Bi{sub 2}MoO{sub 6}) nanosheets. The nanosheets were synthesized by hydrothermal process and characterized using several techniques such as powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy (EDS), UV-diffusive reflectance spectroscopy (UV-DRS), transmission emission microscopy (TEM) and X-ray photon electron spectroscopy (XPS). The detailed morphological and structural studies confirmed the growth of ultra-thin Bi{sub 2}MoO{sub 6} nanosheets in large density with orthorhombic crystal structure. The calculated bandgap energy from Tauc’s plot for the synthesized nanosheets was found to be 2.73 eV, which shows maximum absorption toward higher wavelength. The XPS studies confirmed the successful formation Bi{sub 2}MoO{sub 6} nanosheets. The synthesized material was used as efficient solar light driven photocatalyst for the photocatalytic degradation of Ofloxacin. The mineralization of ofloxacin was confirmed using total organic carbon (TOC) analysis and photocatalytic experiments were performed under optimized conditions. It was observed that TOC value decreased with increasing the irradiation time. Under optimized photocatalytic degradation conditions, the observed extent of degradation was found to be ∼ 71%. The observed results confirm that the synthesized Bi{sub 2}MoO{sub 6} nanosheets are efficient and promising visible light responsive catalyst for the degradation of persistent organic pollutants.

• OSTI ID: 22805463
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 99; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIBIOTICS
BISMUTH COMPOUNDS
CARBON
FOURIER TRANSFORM SPECTROMETERS
GRAIN GROWTH
MOLYBDATES
NANOSTRUCTURES
ORTHORHOMBIC LATTICES
PHOTOCATALYSIS
POLLUTANTS
SHEETS
SOLAR RADIATION
SYNTHESIS
THIN FILMS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY
X-RAY SPECTROSCOPY