Fe-doped ZnO nanoellipsoids for enhanced photocatalytic and highly sensitive and selective picric acid sensor

Journal Article · Fri Jun 15 04:00:00 EDT 2018 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2018.02.042· OSTI ID:22805135

Kumar, Ramesh ^[1]; Umar, Ahmad ^[2]; Rana, Dilbag Singh; Sharma, Pankaj; Chauhan, Suvarcha ^[3]

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1. Department of Applied Sciences and Humanities, Government Polytechnic, Sundernagar, Mandi, 175018 (India)
2. Department of Chemistry, Faculty of Sciences and Arts, Najran University, Najran, 11001 (Saudi Arabia)
3. Department of Chemistry, Himachal Pradesh University, Shimla, 5 (India)

Highlights: • Low-temperature synthesis of Fe-doped ZnO nanoellipsoids. • Used as efficient photocatalyst for photocatalytic degradation of various dyes (RhB, MB, MO). • Potential scaffold for fabrication of highly sensitive and selective picric acid sensor. - Abstract: Herein, we report the synthesis, characterization, and photocatalytic and sensing capabilities of crystalline Fe-doped ZnO nanoellipsoids (NEs). These NEs were synthesized by a low-temperature simple solution process and were characterized with respect to their structural, morphological, optical, compositional, photocatalytic and sensing properties. The detailed studies confirmed that the synthesized NEs were grown in high density possessing wurtzite hexagonal phase and exhibiting good optical properties. Further, the NEs were applied as a photocatalyst for the photocatalytic degradation of various harmful organic dyes such as methyl orange (MO), rhodamine B (RhB) and methylene blue (MB). Interestingly, it was observed that MB and RhB dyes undergo almost 100% photodegradation with 15–60 min, however, MO dye requires 90 min for the degradation. It is also found that picric acid quenches the luminescence of the NEs (with excitation/emission maxima of 380/392 nm). This finding is exploited in a luminescent assay for picric acid with a 2.9 μM lower detection limit and a linear range that extends from 5 to 60 μmol L{sup −1}. The results show that simply synthesized Fe-doped ZnO nanomaterials can efficiently be used for the photocatalytic and sensing applications.

• OSTI ID: 22805135
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 102; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
DOPED MATERIALS
EXCITATION
FABRICATION
IRON
LUMINESCENCE
METHYL ORANGE
METHYLENE BLUE
NANOMATERIALS
OPTICAL PROPERTIES
PHOTOCATALYSIS
PICRIC ACID
RHODAMINES
SENSITIVITY
SOLUTIONS
SYNTHESIS
TEMPERATURE RANGE 0065-0273 K
ZINC OXIDES