Abstract A superior Cd2+ ion optical chemosensors (COCs) built on mesoporous nanosphere silica were designed for naked-eye, visual, and discrimination of ultra-traces Cd2+ ions in water samples. The designed chemosensors were fabricated via direct dressing process of the 1-(2-pyridylazo)-2-naphthol (PAN) into the mesoporous cavities of nanospheres silica. Our approach shows a remarkable, simple, fast response toward Cd2+ ions. The as-synthesized (COCs) nanomonitors show excellently adsorbent functionality across a wide pH range and accomplishes an extraordinary Cd2+ ion adsorption capacity of 100 mg/g at pH=9. Our fabricated nano optical monitors show a wide range of recognition up to 10−9 mol/L at optimum experimental conditions. A colorimetric analysis -based on the captured digital image (DICA) was applied to determine the Cd2+ ion concentration in well water samples. Our data revealing outstanding and harmonious results with the obtained from UV–Vis Spectrophotometry and, using two portable devices for capturing pictures. Our innovated (COCs) nanotrackers show a powerful evidences for clean-up and monitoring the well water from toxic hazards.

中文翻译：

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用于快速筛查和去除井水样品中有毒镉离子的装饰纳米球介孔二氧化硅化学传感器

摘要 设计了一种基于介孔纳米球二氧化硅的优异 Cd2+ 离子光学化学传感器 (COC)，用于水样中超痕量 Cd2+ 离子的肉眼、视觉和辨别。设计的化学传感器是通过将 1-(2-吡啶偶氮)-2-萘酚 (PAN) 直接包覆到纳米球二氧化硅的介孔腔中来制造的。我们的方法显示了对 Cd2+ 离子的显着、简单、快速的响应。合成的 (COCs) 纳米监测器在很宽的 pH 范围内显示出出色的吸附功能，并在 pH=9 时实现了 100 mg/g 的非凡 Cd2+ 离子吸附能力。我们制造的纳米光学监视器在最佳实验条件下显示出高达 10-9 mol/L 的广泛识别范围。应用基于捕获的数字图像 (DICA) 的比色分析来确定井水样品中的 Cd2+ 离子浓度。我们的数据揭示了从紫外-可见分光光度法获得的出色而和谐的结果，并使用两个便携式设备捕获图片。我们创新的 (COC) 纳米跟踪器为清理和监测井水免受有毒危害提供了强有力的证据。