Ni, C, N, S multi-doped ZrO2 decorated on multi-walled carbon nanotubes for effective solar induced degradation of anionic dye
| Autor: | Sachin Girdhar Shinde, Gun-Do Kim, Vinod S. Shrivastava, Maheshkumar Prakash Patil |
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| Rok vydání: | 2020 |
| Předmět: |
Nanotube
Materials science Nanocomposite Band gap Process Chemistry and Technology Doping chemistry.chemical_element 02 engineering and technology Carbon nanotube 010501 environmental sciences 021001 nanoscience & nanotechnology 01 natural sciences Pollution Catalysis law.invention chemistry.chemical_compound Nickel Indigo carmine chemistry law Chemical Engineering (miscellaneous) 0210 nano-technology Waste Management and Disposal 0105 earth and related environmental sciences Nuclear chemistry |
| Zdroj: | Journal of Environmental Chemical Engineering. 8:103769 |
| ISSN: | 2213-3437 |
| DOI: | 10.1016/j.jece.2020.103769 |
| Popis: | The present work deals with the synthesisis of Ni, C, N, S multi-doped ZrO2 / MWCNT’s nanocomposites varying nickel percentage in ZrO2 by homogeneous co-precipitation and fabricated on MWCNT’s by ultrasound-assisted hydrothermal method. The nanocomposites were characterized by TEM-SAED, SEM-EDAX, XRD, FT-IR and UV–vis techniques. SEM-EDAX, XRD, FT-IR techniques confirmed Ni, C, N and S doping in ZrO2. The TEM image revealed fabrication of multi-doped ZrO2 nanoparticles on nanotube surface. The nanocomposites employed for photocatalytic degradation of Indigo Carmine anionic dye in eco-friendly solar radiation. Amongst all nanocomposite 1 % nickel concentarion in ZrO2 exhibited much higher photocatalytic degradation efficiency (96 %) as compared with bare ZrO2 (19 %), C,N,S (48 %), 0.3 % (81 %) and 0.6 % (88 %) in 180 min of irradiation at alkaline pH and 3 mgL−1 catalyst loading following first order rate kinetics (Ka = 16.10 × 10−3) by virtue of it lower band gap (4.17 eV) confirmed by UV–vis spectrum. The degradation was confirmed by GC MS and TOC analysis. Synergism of MWCNT’s by electron trapping to generate O2 - major species confirmed by scavenger addition experiment. The reusability study demonstrated stability and effectiveness of synthesized material for multiple cycles. |
| Databáze: | OpenAIRE |
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