Carboxamide: based chemosensor grafted on SBA-15 nanostructure for selective detection of Hg2+ ion in an aqueous solution

IF 2.5 4区材料科学 Q2 CHEMISTRY, APPLIED

Journal of Porous Materials Pub Date : 2023-07-21 DOI:10.1007/s10934-023-01502-7

Parisa Rezaei, Ahmad Amiri

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引用次数: 0

Abstract

A new adeninecarboxamide ligand, N-(9 H-purin-6-yl) pyridine-2-carboxamide (H₂pzac) has been synthesized by a green chemistry method using tetrabutylammunium bromide (TBAB) ionic liquid as an environmentally friendly reaction medium. The H₂pzac ligand was anchored on modified SBA-15-Cl and utilized for detection of Hg²⁺ in aqueous solution. The as-constructed SBA-15@Hpzac sensor shows a high specific surface area as well as pore volume of 250 m²/g and 0.54 cm³/g, respectively. The fluorescence assessment indicated that the designed SBA-15@Hpzac sensor presented highly sensitive and selective behavior to Hg²⁺ ion over different cations including Zn²⁺, Ni²⁺, Co²⁺, Cu²⁺, Mn²⁺, Pb²⁺, Ba²⁺, Mg²⁺, Ca²⁺, Na⁺, Fe³⁺, Fe²⁺, Al³⁺, Cd²⁺ and K⁺. The fluorescence response of the SBA-15@Hpzac sensor for selective detection of Hg²⁺ ion is excellent with detection limit (LOD) of 1.07 × 10^− 6 M. The application of the SBA-15@Hpzac sensor in determination of Hg²⁺ ions in two real water samples was also investigated.

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羧酰胺:基于SBA-15纳米结构接枝的选择性检测水溶液中Hg2+离子的化学传感器

以四丁基溴化铵（TBAB）离子液体为环保反应介质，通过绿色化学方法合成了一种新的腺嘌呤甲酰胺配体--N-（9 H-嘌呤-6-基）吡啶-2-甲酰胺（H2pzac）。H2pzac 配体被锚定在改性 SBA-15-Cl 上，用于检测水溶液中的 Hg2+。所构建的 SBA-15@Hpzac 传感器具有较高的比表面积和孔隙率，分别为 250 m2/g 和 0.54 cm3/g。荧光评估结果表明，所设计的 SBA-15@Hpzac 传感器对 Hg2+ 离子具有高灵敏度和选择性，而对 Zn2+、Ni2+、Co2+、Cu2+、Mn2+、Pb2+、Ba2+、Mg2+、Ca2+、Na+、Fe3+、Fe2+、Al3+、Cd2+ 和 K+ 等不同阳离子的选择性较低。SBA-15@Hpzac 传感器在选择性检测 Hg2+ 离子方面具有良好的荧光响应，检测限（LOD）为 1.07 × 10- 6 M。

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来源期刊

Journal of Porous Materials 工程技术-材料科学：综合

CiteScore

4.80

自引率

7.70%

发文量

203

审稿时长

2.6 months

期刊介绍： The Journal of Porous Materials is an interdisciplinary and international periodical devoted to all types of porous materials. Its aim is the rapid publication of high quality, peer-reviewed papers focused on the synthesis, processing, characterization and property evaluation of all porous materials. The objective is to establish a unique journal that will serve as a principal means of communication for the growing interdisciplinary field of porous materials. Porous materials include microporous materials with 50 nm pores. Examples of microporous materials are natural and synthetic molecular sieves, cationic and anionic clays, pillared clays, tobermorites, pillared Zr and Ti phosphates, spherosilicates, carbons, porous polymers, xerogels, etc. Mesoporous materials include synthetic molecular sieves, xerogels, aerogels, glasses, glass ceramics, porous polymers, etc.; while macroporous materials include ceramics, glass ceramics, porous polymers, aerogels, cement, etc. The porous materials can be crystalline, semicrystalline or noncrystalline, or combinations thereof. They can also be either organic, inorganic, or their composites. The overall objective of the journal is the establishment of one main forum covering the basic and applied aspects of all porous materials.