| Unique Microstructure of 3D Self-Assembled Mg(OH)2
Nanoparticles for Methylene Blue Degradation in
Presence of Direct Sun Light |
Pradip Sekhar Das,1 Soumitra Das,2 Jiten Ghosh1 and Anoop Kumar Mukhopadhyay1, *
Pages : 226-234
DOI : 10.1080/0371750X.2018.1533890 |
| Abstract |
| Methylene blue (MB) dye present in industrial wastewater is a well-known carcinogenic
source. By utilizing phase pure three dimensional self assembly of magnesium
hydroxide nanoparticle (3DSAMHNPs) powders with extremely high surface area
(~342 m2.g–1), very high (~98%) photocatalytic degradation efficacy for MB dye upon
only 60 min direct exposure to sunlight is reported here. The designed mesoporous
microstructure of the 3DSAMHNPs chracterized with a narrow pore size distribution
range of ~3-9 nm and an average size of ~6 nm is achieved at room temperature by a
facile, cost effective, simple, wet chemical route. The 3DSAMHNPs powders are
characterized by XRD, FESEM, TEM, HRTEM, SAED, EDX, BET surface area, pore size
distribution, FTIR, XPS DTA and TGA techniques. Based on the experimental results,
a mechanism is proposed for the high MB dye degradation efficacy of 3DSAMHNPs
powders developed in the current work. Finally, it is suggested that these 3DSAMHNPs
materials may find potential applications in future as reusable photocatalysts for the
degradation of MB dye in industrial wastewater.
[Keywords: Mg(OH)2 ceramic powder, Chemical synthesis, Mesoporous materials,
Catalytic effect] |
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