TITLE:
Catalytic Reduction of Textile Dyes by N-Doped Ti-Melamine Capped Ag2S Nano Composites
AUTHORS:
Mohammad Farhadur Rahman, Nargish Jahan Ara, Sakib Hasan, Zubair Hasan
KEYWORDS:
Catalytic Reduction, N-Doped Nano-Composites, Levafix Amber RR, Remazol Blue RR
JOURNAL NAME:
Open Journal of Applied Sciences,
Vol.12 No.6,
June
20,
2022
ABSTRACT: Waste
water expulsion containing toxic and hazardous ingredients from textile
industry is one of the biggest concerns in this modern age. N-doped nano
composites as an efficient catalyst are playing a significant role in reducing the toxicity of that textile effluent. N-doped Ti-Mel capped Ag2S
NCs (N-Ti-C/Ag2S NCs) and N-doped TiO2 capped Ag2S
NCs (TiO2/Ag2S NCs) were synthesized via calcinations at
700°C, whereas Ag2S NCs was prepared by simple hydrothermal
treatment process at 120°C and confirmed by FTIR and SEM (EDX). N-Ti-C/Ag2S
NCs were applied in presence of reducing agent NaBH4 with a green
method to decolorize the textile dyes Levafix Amber RR (LA) and Remazol Blue RR
(RB). Moreover, Ag2S NCs, TiO2/Ag2S NCs, NaBH4 and TiO2 were also investigated. Using UV-visible spectroscopy the
progress time was measured to decolorize textile dye RB and completed within 3.15 mins, 12.15 mins, 12.15 mins for N-Ti-C/Ag2S
NCs, Ag2S NCs and TiO2/Ag2S NCs respectively,
while for LA the catalytic reduction taken for the same NCs was 8.15
mins, 12.15 mins and 30.15 mins respectively. N-Ti-C/Ag2S NCs based
catalyst afforded excellent catalytic reduction activity in both cases.
Interestingly the effect of NaBH4 itself and TiO2 in
presence of NaBH4 was less than 5% after 30 mins. Finally, the
reusability for Ti-Mel capped Ag2S NCs evaluated up to four cycles.