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Facile synthesis of hierarchically nanostructured bismuth vanadate: An efficient photocatalyst for degradation and detection of hexavalent chromium
- Source :
- Journal of hazardous materials. 367
- Publication Year :
- 2018
-
Abstract
- Heterostructured nanomaterials can paid more significant attention in environmental safety for the detection and degradation/removal of hazardous toxic chemicals over a decay. Here, we report the preparation of hierarchically nanostructured shuriken like bismuth vanadate (BiVO4) as a bifunctional catalyst for photocatalytic degradation and electrochemical detection of highly toxic hexavalent chromium (Cr(VI)) using the green deep eutectic solvent reline, which allows morphology control in one of the less energy-intensive routes. The SEM results showed a good dispersion of BiVO4 catalyst and the HR-TEM revealed an average particle size of ca. 5–10 nm. As a result, the BiVO4 exhibited good photocatalytic activity under UV-light about 95% reduction of Cr(VI) to Cr(III) was observed in 160 min. The recyclability of BiVO4 catalyst exhibited an appreciable reusability and stability of the catalyst towards the photocatalytic reduction of Cr(VI). Also, the BiVO4-modified screen printed carbon electrode (BiVO4/SPCE) displayed an excellent electrochemical performance towards the electrochemical detection of Cr(VI). Besides, the BiVO4/SPCE demonstrated tremendous electrocatalytic activity, lower linear range (0.01–264.5 μM), detection limit (0.0035 μM) and good storage stability towards the detection of Cr(VI). Importantly, the BiVO4 modified electrode was also found to be a good recovery in water samples for practical applications.
- Subjects :
- Detection limit
021110 strategic, defence & security studies
Environmental Engineering
Materials science
Health, Toxicology and Mutagenesis
0211 other engineering and technologies
02 engineering and technology
010501 environmental sciences
01 natural sciences
Pollution
Catalysis
Bifunctional catalyst
Nanomaterials
Deep eutectic solvent
chemistry.chemical_compound
chemistry
Bismuth vanadate
Photocatalysis
Environmental Chemistry
Hexavalent chromium
Waste Management and Disposal
0105 earth and related environmental sciences
Nuclear chemistry
Subjects
Details
- ISSN :
- 18733336
- Volume :
- 367
- Database :
- OpenAIRE
- Journal :
- Journal of hazardous materials
- Accession number :
- edsair.doi.dedup.....c030f35e31fe2bf51a571680ffe64b7c