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铜固定在2D六角SBA-15上,用于电化学和色度测量硫酸盐传感

Rima Biswas¹, Debojit Ghosh¹, Samarpita Das¹

¹Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, West Bengal 711 103, India.

Inorganic chemistry

|July 7, 2023

概括

一种新型的铜材料 (CuMS) 能够对有毒硫酸盐离子进行敏感的电化学和色度检测. 这种双技术传感器在检测白葡萄酒中的硫酸盐方面表现出高的选择性和实际应用.

科学领域:

材料科学材料科学材料科学
分析化学分析化学
纳米技术纳米技术

背景情况:

硫酸盐 (SO2-) 是一种有毒的离子,需要精确的检测方法.
现有的硫酸盐检测技术可能缺乏灵敏度或选择性.
开发用于传感应用的先进材料至关重要.

研究的目的:

为了合成和表征一个铜固定的半孔性二氧化材料 (CuMS).
开发一种双技术 (电化学和色度) 的传感平台,用于使用CuMS检测硫酸盐.
评估传感器的性能,包括灵敏度,选择性和实际适用性.

主要方法:

通过对2D六角顺序的半孔二氧化上铜的固定合成CuMS,使用TEPTS连接体.
使用SEM,TEM,XRD,N₂吸附和XPS的材料表征.
基于其在CuMS表面的氧化,电化学检测硫酸盐.
使用CuMS材料进行硫酸盐的色度检测.
评价传感器性能,包括灵敏度,检测极限 (LOD) 和针对常见干扰物的选择性.
在白葡萄酒样本中进行应用测试.

主要成果:

CuMS材料表现出保留的中孔性,狭窄的孔径分布 (D ≈ 5.4 nm) 和高表面积 (682 m2 g-1).
电化学传感显示了0.2-15mM的硫酸盐氧化线性反应,具有高灵敏度 (62.08μA cm-2) 和低LOD (1.14nM).
颜色测量检测实现了一个更低的LOD,即0.4nM.
CuMS传感器在白葡萄酒样本中显示出对硫酸盐的高选择性和出色的回收.

结论:

合成的CuMS材料作为双模式硫酸盐检测的有效平台.
该传感器具有高灵敏度,选择性和低酸盐检测极限.
在白葡萄酒等真实样品中证明的实际适用性突显了这种基于CuMS的传感器的潜力.

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