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Jagpreet Singh,Vanish Kumar,Sukhwinder Singh Jolly,김기현,Mohit Rawat,Deepak Kukkar,Yiu Fai Tsang 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.80 No.-
A facile/clean/sustainable route for the preparation of silver nanoparticles (Ag NPs) was investigatedusing Trigonella foenum-graecum (TF) leaf extract. The bio-reduced Ag NPs showed photocatalyticdegradation potential of 88% and 86% for reactive blue 19 (RB19) and reactive yellow 186 (RY186),respectively (at 180 min). The complete mineralization of degraded medium was monitored by decline inchemical oxygen demand (COD). The role of activation energy in photocatalytic degradation process wasinvestigated across different temperatures. In light of their photocatalytic efficiency, reusability, andenvironment friendly synthesis approach, biogenic Ag NPs were demonstrated as effective system forefficient water purification.
Karanveer Singh,Deepak Kukkar,Ravinder Singh,Preeti Kukkar,Nardev Bajaj,Jagpreet Singh,Mohit Rawat,Akshay Kumar,Ki-Hyun Kim 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.81 No.-
In this manuscript, we report the insitu growth of gold nanoparticles (GNPs) and silver nanoparticles(SNPs) over Ce/Tb-doped Y-benzene tricaroboxylate metal organic frameworks (MOF-76). Thephotocatalytic potential of these nanocomposites (NCs) was then assessed for the photocatalyticreduction of p-nitrophenol (p-NP) in aqueous medium. The NCs had large surface area to favorablyshowcase the efficient absorption of light energy. Correspondingly, it facilitated the electron transferbetween the valance and conduction bands to promote the reductive removal of p-NP. Among the testedcatalysts, GNPs@MOF-76 (Ce) (MOF-76(1a)) (dosage: 10 ml of 5 mg.ml 1) recorded the maximumcatalytic efficiency (96.3%) with an apparent rate constant (K0app: 0.33 min 1). Further, MOF-76 (1a) NCsexhibited good recyclability (e.g., a catalytic efficiency of 77.45% over 3 cycles). Moreover, the proposedNCs exhibited superior performance over commercial photocatalysts (e.g., p25 TiO2 nanopowder)towards p-NP reduction. As such, the results of this experimental study successfully demonstrated thesuperiority of the MOF immobilized nanoparticles (NPs) as an efficient platform for the removal ofindustrial grade pollutants.