Catalytic Decolorization of Rhodamine B, Congo Red, and Crystal Violet Dyes, with a Novel Niobium Oxide Anchored Molybdenum (Nb–O–Mo)
In this work, a new metal-to-metal charge transfer (MMCT) heterogeneous catalyst (Nb–O–Mo) was synthesized by a chemical grafting method under an inert atmosphere. The activity of the covalently anchored oxo-bridged Nb–O–Mo catalyst was estimated for decolorization of Rh B, congo red, and crystal vi...
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MDPI AG
2020-05-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/10/5/491 |
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doaj-937b0379f703444099900cfc3a4312992020-11-25T02:19:37ZengMDPI AGCatalysts2073-43442020-05-011049149110.3390/catal10050491Catalytic Decolorization of Rhodamine B, Congo Red, and Crystal Violet Dyes, with a Novel Niobium Oxide Anchored Molybdenum (Nb–O–Mo)Rahul L. Kadam0Yeonhee Kim1Sanjit Gailkwad2Mincheol Chang3Naresh H. Tarte4Sangil Han5Department of Chemical Engineering, Changwon National University, Changwon, 51140 KoreaSchool of Energy and Chemical Engineering, UNIST, Ulsan 44919, KoreaDepartment of Chemical Engineering, Changwon National University, Changwon, 51140 KoreaSchool of Polymer Science and Engineering, Chonnam National University, Gwangju 61186, KoreaDepartment of Chemistry and Biology, Korea Science Academy of KAIST, 105-47, Baegyanggwanmun-ro, Busanjin-gu, Busan, KoreaDepartment of Chemical Engineering, Changwon National University, Changwon, 51140 KoreaIn this work, a new metal-to-metal charge transfer (MMCT) heterogeneous catalyst (Nb–O–Mo) was synthesized by a chemical grafting method under an inert atmosphere. The activity of the covalently anchored oxo-bridged Nb–O–Mo catalyst was estimated for decolorization of Rh B, congo red, and crystal violet dyes in an aqueous solution under fluorescent light. The catalyst was characterized via X-ray diffraction, scanning electron microscopy with energy-dispersive X-ray spectrometer, Fourier-transform infrared, and FT-Raman. The catalytic decolorization was evaluated from the UV spectra of dyes in aqueous solution by changing different factors, including dye concentration, temperature, and catalyst loading. Decolorization percentages were 83%–89%, 86%–95%, 97%–99% for Rh B, Congo Red and Crystal Violet in 1 min at 298 K, showing the best performance among other catalysts. Decolorization efficiency for 50 ppm of Rh B was improved from 92% to 98%, with a temperature increase to 318 K.https://www.mdpi.com/2073-4344/10/5/491metal-to-metal charge transferNb2O5catalytic decolorizationdyeswater purification |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Rahul L. Kadam Yeonhee Kim Sanjit Gailkwad Mincheol Chang Naresh H. Tarte Sangil Han |
| spellingShingle |
Rahul L. Kadam Yeonhee Kim Sanjit Gailkwad Mincheol Chang Naresh H. Tarte Sangil Han Catalytic Decolorization of Rhodamine B, Congo Red, and Crystal Violet Dyes, with a Novel Niobium Oxide Anchored Molybdenum (Nb–O–Mo) Catalysts metal-to-metal charge transfer Nb2O5 catalytic decolorization dyes water purification |
| author_facet |
Rahul L. Kadam Yeonhee Kim Sanjit Gailkwad Mincheol Chang Naresh H. Tarte Sangil Han |
| author_sort |
Rahul L. Kadam |
| title |
Catalytic Decolorization of Rhodamine B, Congo Red, and Crystal Violet Dyes, with a Novel Niobium Oxide Anchored Molybdenum (Nb–O–Mo) |
| title_short |
Catalytic Decolorization of Rhodamine B, Congo Red, and Crystal Violet Dyes, with a Novel Niobium Oxide Anchored Molybdenum (Nb–O–Mo) |
| title_full |
Catalytic Decolorization of Rhodamine B, Congo Red, and Crystal Violet Dyes, with a Novel Niobium Oxide Anchored Molybdenum (Nb–O–Mo) |
| title_fullStr |
Catalytic Decolorization of Rhodamine B, Congo Red, and Crystal Violet Dyes, with a Novel Niobium Oxide Anchored Molybdenum (Nb–O–Mo) |
| title_full_unstemmed |
Catalytic Decolorization of Rhodamine B, Congo Red, and Crystal Violet Dyes, with a Novel Niobium Oxide Anchored Molybdenum (Nb–O–Mo) |
| title_sort |
catalytic decolorization of rhodamine b, congo red, and crystal violet dyes, with a novel niobium oxide anchored molybdenum (nb–o–mo) |
| publisher |
MDPI AG |
| series |
Catalysts |
| issn |
2073-4344 |
| publishDate |
2020-05-01 |
| description |
In this work, a new metal-to-metal charge transfer (MMCT) heterogeneous catalyst (Nb–O–Mo) was synthesized by a chemical grafting method under an inert atmosphere. The activity of the covalently anchored oxo-bridged Nb–O–Mo catalyst was estimated for decolorization of Rh B, congo red, and crystal violet dyes in an aqueous solution under fluorescent light. The catalyst was characterized via X-ray diffraction, scanning electron microscopy with energy-dispersive X-ray spectrometer, Fourier-transform infrared, and FT-Raman. The catalytic decolorization was evaluated from the UV spectra of dyes in aqueous solution by changing different factors, including dye concentration, temperature, and catalyst loading. Decolorization percentages were 83%–89%, 86%–95%, 97%–99% for Rh B, Congo Red and Crystal Violet in 1 min at 298 K, showing the best performance among other catalysts. Decolorization efficiency for 50 ppm of Rh B was improved from 92% to 98%, with a temperature increase to 318 K. |
| topic |
metal-to-metal charge transfer Nb2O5 catalytic decolorization dyes water purification |
| url |
https://www.mdpi.com/2073-4344/10/5/491 |
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