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<p>Photocatalytic decolourisation of a toxic dye, Acid Blue 25, with graphene based N-doped titania</p><p> </p>

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Title Statement <p>Photocatalytic decolourisation of a toxic dye, Acid Blue 25, with graphene based N-doped titania</p><p> </p>
 
Added Entry - Uncontrolled Name SenGupta, Susmita ; B N College
Chakrabortty, Dhruba ; Department of Chemistry, B N College, Dhubri, Assam, India
College of Engineering and Computing, University of South Carolina; IIT-Guwahati
 
Uncontrolled Index Term catalysis and analytical chemistry
Degradation, Dye degradation, Photocatalytic decolourisation, Graphene based N-TiO2, Titania
 
Summary, etc. <p style="text-align: justify;">This study investigates adsorption of Acid Blue 25 dye and photocatalytic decolourisation with graphene based nitrogen doped TiO<sub>2</sub>. The prepared material has been characterised by XRD, BET, DRS, PL, TEM and XPS study. The photocatalytic reaction was carried out after the attainment of adsorption equilibrium between graphene based nitrogen doped TiO<sub>2 </sub>and dye. The photocatalyst dose, initial dye concentration and solution pH are found to influence both the processes. The percentage decolourisation increases on increase of amount of catalyst from 95.57% (load: 0.125 g L<sup>-1</sup>) to 99.91% (load: 0.75 g L<sup>-1</sup>). However, further increase of the catalyst dose to 1.25 g L<sup>-1</sup> leads to decrease in the extent of decolourisation. The decolourisation is favoured by lower dye concentration. The solution pH influences the reaction process and at pH 3.0, the material can decolourise almost 99% of the dye within 180 min of irradiation time. COD results reveal ~99% mineralisation of the dye on 420 min of irradiation. The percentage decolourisation of the dye is higher with graphene based nitrogen doped TiO<sub>2 </sub>as<sub> </sub>compared to<sub> </sub>NTiO<sub>2</sub> or TiO<sub>2</sub> P25. The adsorption interaction follows the Lagergren first order model and modified Langmuir-Hinselwood model is preferably followed by dye decolourisation.</p>
 
Publication, Distribution, Etc. Indian Journal of Chemistry -Section A (IJCA)
2020-12-10 16:52:48
 
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http://op.niscair.res.in/index.php/IJCA/article/view/15879
 
Data Source Entry Indian Journal of Chemistry -Section A (IJCA); ##issue.vol## 56, ##issue.no## 12 (2017): INDIAN JOURNAL OF CHEMISTRY - SECTION A
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJCA/article/download/15879/47555
 
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