Orange yellow S chromophore-functionalized mesoporous silica for ultrasensitive Cu2+ detection and removal

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-07-12 DOI:10.1016/j.jtice.2025.106269

Mona Saad Binkadem , Abdullah Akhdhar , Abdullah Saad Al‐Bogami , Waleed A El-Said , Emad Elshehy

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引用次数: 0

Abstract

Excessive copper (Cu²⁺) in water poses severe health risks, demanding efficient detection and removal solutions. This study presents a reusable, high-performance optical sensor based on a cubic mesoporous silica monolith (CMM) functionalized with Orange Yellow S dye (CMM-OYS) for selective Cu²⁺ adsorption and sensing. The material, synthesized via direct templating, features a high surface area (380.5 m²/g) and uniform 7.11 nm mesopores, enhancing Cu²⁺ capture. Comprehensive characterization (SEM, TEM, XPS, SAXS, EDX, BET) confirmed its structural integrity. At pH 6.0, CMM-OYS achieved 86.8 mg/g adsorption capacity and 94.8 % removal efficiency, outperforming competitors. A citrate-thiosulfate-tartrate masking system ensured exceptional selectivity against 5 ppm interfering ions. The sensor remained stable for five cycles with only 5 % efficiency loss and successfully extracted Cu²⁺ from e-waste (87.8 % recovery). With a detection limit of 60 µg/L and linear range of 50–500 µg/L, CMM-OYS offers a cost-effective, sustainable solution for trace Cu²⁺ monitoring and remediation in environmental and industrial applications.

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橙黄色S色团功能化介孔二氧化硅超灵敏Cu2+检测和去除

水中过量的铜（Cu2+）构成严重的健康风险，需要有效的检测和去除解决方案。本研究提出了一种可重复使用的高性能光学传感器，该传感器基于橙黄S染料（CMM- oys）功能化的立方介孔硅胶整体块（CMM），用于选择性吸附和传感Cu2+。该材料通过直接模板法合成，具有高表面积（380.5 m²/g）和均匀的7.11 nm介孔，增强了Cu2+的捕获。综合表征（SEM， TEM， XPS， SAXS， EDX， BET）证实其结构完整。在pH 6.0时，CMM-OYS的吸附量为86.8 mg/g，去除率为94.8%，优于竞争对手。柠檬酸盐-硫代硫酸盐-酒石酸盐掩蔽系统确保了对5ppm干扰离子的特殊选择性。该传感器在5次循环中保持稳定，效率损失仅为5%，并成功地从电子垃圾中提取了Cu2+（回收率为87.8%）。CMM-OYS的检测限为60 μ g/L，线性范围为50-500 μ g/L，为环境和工业应用中的痕量Cu2+监测和修复提供了经济高效、可持续的解决方案。

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.