砷
发光
吸附
猝灭(荧光)
解吸
材料科学
碳纤维
荧光
环境化学
介孔材料
检出限
水溶液
纳米技术
化学
光电子学
色谱法
冶金
有机化学
物理
量子力学
复合数
复合材料
催化作用
作者
Sanjay Yadav,Nishu Choudhary,Vasavdutta Sonpal,Alok Ranjan Paital
出处
期刊:Small
[Wiley]
日期:2023-10-25
卷期号:20 (11)
被引量:2
标识
DOI:10.1002/smll.202307491
摘要
Abstract The environmental monitoring and remediation of highly toxic inorganic arsenic species in natural water are needed for the benefit of the ecosystem. Current studies on arsenic detection and removal often employ separate materials, which exhibit blue luminescence with fluorescence quenching, making them unsuitable for biological and environmental samples. In this study, carbon dot‐embedded mesoporous silica tubes functionalized with melamine are synthesized to address these limitations and enable specific and turn‐on probing of inorganic arsenic. The newly synthesized material demonstrates excitation‐independent yellow luminescence and can effectively detect both As (III) and As (V) at low detection limits (11 × 10 −9 m , 11.2 × 10 −9 m ), well below the prescribed threshold limits in drinking water. It also exhibits a high adsorption capacity (≈125, 159 mg g −1 ) with fast kinetics. The material's applicability in environmental samples is validated through the successful quantification of arsenic in real samples with satisfactory recoveries. Moreover, the material shows recyclability for reuse, as demonstrated by its arsenic adsorption and desorption for several cycles under basic conditions. Additionally, the material's capability for monitoring arsenic in a biological sample ( Artemia salina ) is demonstrated through fluorescence imaging. The encouraging outcomes underscore the material's potential use in monitoring and mitigating arsenic in aqueous systems.
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