Alnuwaiser Maha Abdallah, Rabia Mohamed
Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University PO Box 84428 Riyadh 11671 Saudi Arabia
Nanomaterials Science Research Laboratory, Chemistry Department, Faculty of Science, Beni-Suef University Beni-Suef 62514 Egypt
RSC Adv. 2024 Jan 26;14(6):3878-3887. doi: 10.1039/d3ra07932e. eCollection 2024 Jan 23.
A highly promising flower-shaped WS-WO/poly-2-aminobenzene-1-thiol (P2ABT) nanocomposite was successfully synthesized a reaction involving 2-aminobenzene-1-thiol, NaWO, and KSO as oxidants. The WS-WO/P2ABT nanocomposite demonstrated remarkable potential as a sensor for detecting harmful Hg ions in aqueous solutions. The sensing behavior was evaluated over a wide concentration range, from 10 to 10 M, using a simple potentiometric study on a two-electrode cell. The calibration curve yielded an excellent Nernstian slope of 33.0 mV decade. To further validate the sensing capabilities, cyclic voltammetry was employed, and the results showed an increasing trend in the cyclic voltammetry curve as the Hg concentration increased from 10 to 10 M with an evaluated sensitivity of 2.4 μA M. The WS-WO/P2ABT nanocomposite sensor exhibited exceptional selectivity for detecting Hg ions, as no significant effects were observed from other interfering ions such as Zn, Ni, Ca, Mg, Al, and K ions in the cyclic voltammetry tests. Furthermore, the sensor was tested on a natural sample that was free of Hg ions, and the cyclic voltammetry curves did not produce any characteristic peaks, confirming the sensor's specificity for Hg detection. The sensor's cost-effectiveness and ease of fabrication present the potential for developing a simple and practical sensor for detecting highly poisonous ions in aqueous solutions.
一种极具前景的花状WS-WO/聚-2-氨基苯-1-硫醇（P2ABT）纳米复合材料通过涉及2-氨基苯-1-硫醇、钨酸钠和硫酸钾作为氧化剂的反应成功合成。WS-WO/P2ABT纳米复合材料作为检测水溶液中有害汞离子的传感器显示出显著潜力。使用双电极电池的简单电位研究在10⁻¹²至10⁻⁶ M的宽浓度范围内评估传感行为。校准曲线产生了33.0 mV/十倍浓度变化的出色能斯特斜率。为进一步验证传感能力，采用了循环伏安法，结果表明随着汞浓度从10⁻¹² M增加到10⁻⁶ M，循环伏安曲线呈上升趋势，评估灵敏度为2.4 μA/M。WS-WO/P2ABT纳米复合材料传感器在检测汞离子方面表现出卓越的选择性，因为在循环伏安测试中未观察到其他干扰离子如锌、镍、钙、镁、铝和钾离子的显著影响。此外，该传感器在不含汞离子的天然样品上进行测试，循环伏安曲线未产生任何特征峰，证实了该传感器对汞检测的特异性。该传感器的成本效益和易于制造为开发一种用于检测水溶液中剧毒离子的简单实用传感器提供了潜力。
