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Synthesis and characterization of a plant growth regulator based silver nanoparticles for the ultrasensitive detection of environmentally toxic Hg2+ ions in tap water
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2021-08-26 , DOI: 10.1039/d1nj03393j Farid Ahmed 1 , Imdad Ali 2 , Heyam Saad Ali 3 , Saira Yasmeen 2 , Shafi Ullah 2 , Samiullah Burki 4 , Muhammad Adil 2 , Jan Nisar 5 , Muhammad Raza Shah 2
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2021-08-26 , DOI: 10.1039/d1nj03393j Farid Ahmed 1 , Imdad Ali 2 , Heyam Saad Ali 3 , Saira Yasmeen 2 , Shafi Ullah 2 , Samiullah Burki 4 , Muhammad Adil 2 , Jan Nisar 5 , Muhammad Raza Shah 2
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Herein, we report the synthesis and characterization of a plant growth regulator based silver nanoparticles for use as a sensor for the ultrasensitive detection of toxic metal ions (Hg2+) in tapwater. Kinetin-based nanoparticles (Kin–AgNPs) were synthesized by a chemical reduction method and characterized using ultraviolet (UV)-visible, atomic force microscopy (AFM), Zetasizer analysis, and Fourier-transform infrared (FTIR) spectroscopic techniques. The average size of the NPs was found to be in the range of 40–60 nm. The Kin–AgNPs were found to be extremely stable at high temperatures, high electrolyte concentrations, and over a wide pH range. The UV-visible spectroscopy was used to investigate the sensing ability of the Kin–AgNPs towards metal cations. The addition of Hg2+ produces a significant reduction in the absorption intensity of the Kin–AgNPs. The Kin–AgNPs were found to be highly selective even in the presence of several other competing metal cations. A direct linear relationship between absorption intensity and Hg2+ concentration was observed in the range of 0.01 μM to 100 μM, with an R2 value of 0.98. The synthesized Kin–AgNP-based nanosensor detected Hg2+ ions with a limit of detection of 6.6 nM. Moreover, the Kin–AgNPs were successfully used for the detection of mercury in laboratory tap water.
中文翻译：
基于植物生长调节剂的银纳米粒子的合成和表征，用于超灵敏检测自来水中对环境有毒的 Hg2+ 离子
在此，我们报告了基于植物生长调节剂的银纳米颗粒的合成和表征，该银纳米颗粒用作超灵敏检测自来水中有毒金属离子 (Hg 2+ )的传感器。基于激动素的纳米粒子 (Kin-AgNPs) 通过化学还原方法合成，并使用紫外 (UV)-可见光、原子力显微镜 (AFM)、Zetasizer 分析和傅里叶变换红外 (FTIR) 光谱技术进行表征。发现纳米颗粒的平均尺寸在 40-60 nm 的范围内。发现 Kin-AgNPs 在高温、高电解质浓度和较宽的 pH 范围内非常稳定。紫外-可见光谱用于研究 Kin-AgNPs 对金属阳离子的传感能力。添加 Hg 2+Kin-AgNPs 的吸收强度显着降低。即使在存在几种其他竞争金属阳离子的情况下，Kin-AgNPs 也具有高度选择性。在 0.01 μM 至 100 μM 的范围内观察到吸收强度和 Hg 2+浓度之间的直接线性关系，R 2值为 0.98。合成的基于 Kin-AgNP 的纳米传感器检测到 Hg 2+离子，检测限为 6.6 nM。此外，Kin-AgNPs 已成功用于检测实验室自来水中的汞。
更新日期：2021-09-14
中文翻译：
基于植物生长调节剂的银纳米粒子的合成和表征，用于超灵敏检测自来水中对环境有毒的 Hg2+ 离子
在此，我们报告了基于植物生长调节剂的银纳米颗粒的合成和表征，该银纳米颗粒用作超灵敏检测自来水中有毒金属离子 (Hg 2+ )的传感器。基于激动素的纳米粒子 (Kin-AgNPs) 通过化学还原方法合成，并使用紫外 (UV)-可见光、原子力显微镜 (AFM)、Zetasizer 分析和傅里叶变换红外 (FTIR) 光谱技术进行表征。发现纳米颗粒的平均尺寸在 40-60 nm 的范围内。发现 Kin-AgNPs 在高温、高电解质浓度和较宽的 pH 范围内非常稳定。紫外-可见光谱用于研究 Kin-AgNPs 对金属阳离子的传感能力。添加 Hg 2+Kin-AgNPs 的吸收强度显着降低。即使在存在几种其他竞争金属阳离子的情况下，Kin-AgNPs 也具有高度选择性。在 0.01 μM 至 100 μM 的范围内观察到吸收强度和 Hg 2+浓度之间的直接线性关系，R 2值为 0.98。合成的基于 Kin-AgNP 的纳米传感器检测到 Hg 2+离子，检测限为 6.6 nM。此外，Kin-AgNPs 已成功用于检测实验室自来水中的汞。
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