Fabrication of PdAg nanoparticle infused metal-organic framework for electrochemical and solution-chemical reduction and detection of toxic 4-nitrophenol
Fabrication of PdAg nanoparticle infused metal-organic framework for electrochemical and solution-chemical reduction and detection of toxic 4-nitrophenol
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DOI：
10.1016/j.snb.2019.126861
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发表时间：
2019-11-01
影响因子：
8.4
通讯作者：
Park, Kang Hyun
中科院分区：
文献类型：
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作者：
Hira, Shamim Ahmed;Nallal, Muthuchamy;Park, Kang Hyun
在这项研究中，我们利用功能化的金属有机框架（MOFs）作为主机矩阵包埋银和钯（AgPd）纳米粒子。通过UV、FT-IR、XRD、SEM、TEM、XPS、BET和TGA等分析手段对合成材料的物化性能进行了表征。所合成的材料表现出优异的活动对4-硝基苯酚的电化学检测和还原NaBH 4在环境条件下。构建的传感器显示出选择性和灵敏度的测定4-NP的线性浓度范围为100-370 μ M，检测限为Sigma 32 nM。此外，由于其高的比表面积，高的电导率和快速的电荷转移能力，传感器显示出良好的电催化活性。此外，在常见干扰物质存在下，它对4-NP表现出优异的选择性。该催化剂对4-NP的还原反应具有良好的催化活性。它可以连续重复使用五次，而催化活性没有明显损失。通过对自来水样品中4-NP的检测，探讨了所构建的传感器的适用性，回收率接近100.97%。
In this study, we utilized functionalized metal organic frameworks (MOFs) as a host matrix to embed silver and palladium (AgPd) bimetallic nanoparticles. The physicochemical properties of the as-synthesized materials were characterized Via UV, FT-IR, XRD, SEM, TEM, XPS, BET and TGA analysis. The as-synthesized materials presented excellent activities toward the electrochemical detection of 4-nitrophenol and its reduction by NaBH4 under ambient conditions. The constructed sensor displayed selective and sensitive determination of 4-NP in the linear concentration range 100-370 mu M with a limit of detection of Sigma 32 nM. Moreover, because of its high specific surface area, high conductivity, and fast charge transfer ability, the sensor displayed good electrocatalytic activity. Moreover, it exhibited excellent selectivity toward 4-NP in the presence of common interfering species. The synthesized catalyst exhibited good catalytic activity for the reduction of 4-NP. It was reusable for five consecutive cycles without a significant loss in its catalytic activity. The applicability of the constructed sensor was explored via the detection of 4-NP in tap water samples at a recovery of similar to 100.97%.