Mixed anionic surfactant-templated mesoporous silica nanoparticles for fluorescence detection of Fe3+. Issue 2 (30th November 2015)

• Record Type: Journal Article
• Authors: Gai, Fangyuan; Zhou, Tianlei; Chu, Guang; Li, Ye; Liu, Yunling; Huo, Qisheng; Akhtar, Farid
• Is Part Of: Dalton transactions. Volume 45:Issue 2(2016)
• Page Start: 508
• Page End: 514
• Publication Date: 2015-11-30
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c5dt03052h
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : This work demonstrates the design and synthesis of large pore mesoporous silica nanoparticles by using mixed anionic surfactants as soft templates to introduce amino group for Fe 3+ fluorescent detection. Abstract : This work demonstrates a novel method for the synthesis of large pore mesoporous silica nanoparticles (MSNs) with a pore diameter of 10.3 nm and a particle diameter of ∼50 nm based on the incorporation of mixed anionic surfactants sodium dodecyl benzene sulfonate (SDBS) and sodium dodecyl sulphate (SDS) as the template in the synthesis process. The dispersity, morphology, pore structure and size of mesoporous nanoparticles were adjusted by changing the molar ratio of two anionic surfactants, the concentration of the co-structure-directing agent (3-aminopropyltrimethoxysilane) and the reaction temperature. The results of synthesis experiments suggested that the formation of large pore MSNs involved a nucleation and growth process. MSNs were post-grafted with a Schiff base moiety for fluorescence sensing of Fe 3+ in water. The applicability of functionalized MSNs was demonstrated by selective fluorescence detection of Fe 3+ in aqueous media.