Scholarlink

<p>Globally, solid waste generation and water pollution are the two major challenges which are critically escalating the environmental concerns. This necessitates the urge to manage solid waste and protect water resources at the earliest. So, in the present investigation, citrus fruit waste biomass has been valorized into a novel Schiff base chemosensor (SBC) 2-((2-hydroxy-6-isopropyl-3-methylbenzylidene)amino)-3-phenylpropanoate to detect Fe<sup>+ 3</sup> ions in water. SBC (98% yield) was synthesized by condensing 2-hydroxy-6-isopropyl-3-methylbenzaldehyde (1 mmol) and L-phenylalanine methyl ester (1.5 mmol) in methanol at 60℃ for 16&#xa0;h. Its formation was confirmed by advanced instrumentation techniques which revealed its 99% purity. UV-visible analysis determined the selectivity and specificity of SBC towards Fe<sup>+ 3</sup> ions without causing any interference with other metal ions. A visible color change from colorless to golden-yellow was observed upon addition of Fe<sup>+ 3</sup> ions (10 mM) to SBC (10 µM) at optimum pH = 8. This colorimetric change showed bathochromic shift (λ<sub>max</sub> = 254&#xa0;nm to 358&#xa0;nm) signifying chelation and the Job’s plot revealed the stoichiometry as 1:1. SBC has shown a strong binding affinity (6.303 × 10<sup>4</sup> M<sup>− 1</sup>) and low limit of detection (10.97 µM). Also, SBC is reversible in nature as studied using logic gate behavior and EDTA titrations. Furthermore, its potential to detect Fe<sup>+ 3</sup> ions in both solid (silica) and liquid (aqueous) media has also been discussed. Therefore, the present study was successful in developing a novel environmentally benign citrus fruit waste-based Schiff base chemosensor for rapid detection of Fe<sup>+ 3</sup> ions in water.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Environment friendly colorimetric “Turn-On” schiff base chemosensor functionalized on silica for detection of Fe+ 3 ions

  • 期刊论文

  • 发表日期：

    2026年3月6日

查看全文
  • Eksha Guliani,
  • Sangita Banga,
  • Vinayak V. Pathak

摘要

Globally, solid waste generation and water pollution are the two major challenges which are critically escalating the environmental concerns. This necessitates the urge to manage solid waste and protect water resources at the earliest. So, in the present investigation, citrus fruit waste biomass has been valorized into a novel Schiff base chemosensor (SBC) 2-((2-hydroxy-6-isopropyl-3-methylbenzylidene)amino)-3-phenylpropanoate to detect Fe+ 3 ions in water. SBC (98% yield) was synthesized by condensing 2-hydroxy-6-isopropyl-3-methylbenzaldehyde (1 mmol) and L-phenylalanine methyl ester (1.5 mmol) in methanol at 60℃ for 16 h. Its formation was confirmed by advanced instrumentation techniques which revealed its 99% purity. UV-visible analysis determined the selectivity and specificity of SBC towards Fe+ 3 ions without causing any interference with other metal ions. A visible color change from colorless to golden-yellow was observed upon addition of Fe+ 3 ions (10 mM) to SBC (10 µM) at optimum pH = 8. This colorimetric change showed bathochromic shift (λmax = 254 nm to 358 nm) signifying chelation and the Job’s plot revealed the stoichiometry as 1:1. SBC has shown a strong binding affinity (6.303 × 104 M− 1) and low limit of detection (10.97 µM). Also, SBC is reversible in nature as studied using logic gate behavior and EDTA titrations. Furthermore, its potential to detect Fe+ 3 ions in both solid (silica) and liquid (aqueous) media has also been discussed. Therefore, the present study was successful in developing a novel environmentally benign citrus fruit waste-based Schiff base chemosensor for rapid detection of Fe+ 3 ions in water.

Graphical Abstract