光催化
4-硝基苯酚
催化作用
金属有机骨架
纳米颗粒
材料科学
电子转移
水溶液
金属
纳米复合材料
化学工程
核化学
纳米技术
光化学
化学
有机化学
冶金
吸附
工程类
作者
K. P. Singh,Deepak Kukkar,Ravinder Pal Singh,Preeti Kukkar,Nardev Kumar Bajaj,Jagpreet Singh,Mohit Rawat,Akshay Kumar,Ki‐Hyun Kim
标识
DOI:10.1016/j.jiec.2019.09.008
摘要
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). The photocatalytic potential of these nanocomposites (NCs) was then assessed for the photocatalytic reduction of p-nitrophenol (p-NP) in aqueous medium. The NCs had large surface area to favorably showcase the efficient absorption of light energy. Correspondingly, it facilitated the electron transfer between the valance and conduction bands to promote the reductive removal of p-NP. Among the tested catalysts, [email protected] (Ce) (MOF-76(1a)) (dosage: 10 μl of 5 mg.ml−1) recorded the maximum catalytic efficiency (96.3%) with an apparent rate constant (Kapp': 0.33 min−1). Further, MOF-76 (1a) NCs exhibited good recyclability (e.g., a catalytic efficiency of 77.45% over 3 cycles). Moreover, the proposed NCs 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 the superiority of the MOF immobilized nanoparticles (NPs) as an efficient platform for the removal of industrial grade pollutants.
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