Facile One‐Pot Synthesis of Yolk‐Shell Structured Ni Doped Mesoporous Silica and Its Application in Enzyme‐Free Glucose Sensor. Issue 22 (8th June 2018)

• Record Type: Journal Article
• Authors: Pal, Nabanita; Banerjee, Sangam; Choi, Eunji; Cho, Eun‐Bum
• Is Part Of: ChemistrySelect. Volume 3:Issue 22(2018)
• Page Start: 6029
• Page End: 6034
• Publication Date: 2018-06-08
• Subjects: Biosensor -- electrocatalysis -- hollow sphere -- metal doped silica -- nickel hydrosilicate -- sol-gel synthesis -- yolk-shell structure; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201800583
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Yolk‐shell structured Ni‐doped silica with high specific surface area and excellent thermal stability has been synthesized via a simple surfactant assisted sol‐gel mediated hydrothermal method using hexadecyltrimethylammonium bromide (CTAB) as a structure‐directing agent in water‐ethanol mixed solvent. After calcining off the organic surfactant, the resulting material shows crystallinity in powder X‐ray diffraction (XRD) analysis with formation of nickel hydrosilicate phase, Ni3 Si2 O5 (OH)4 . The mesoporosity, nanostructure and morphology of the material have been confirmed by N2 sorption, transmission (TEM) and field‐emission scanning electron microscopic (FESEM) analysis, respectively. Ni‐silica yolk‐shell nanostructure with around 30 wt% Ni has surface area ca . 500 m 2 /g with pore width ca . 3.8 nm and 400–500 nm particle size. X‐ray photoelectron spectroscopic (XPS) study has also been carried out to confirm the presence of Ni(II) species in the material. This yolk‐shell Ni‐doped‐silica mesostructure has been utilized successfully for non‐enzymatic glucose detection at room temperature via electrochemical sensing of D‐glucose analyte in 0.1 M NaOH solution. Abstract : Mesoporous Ni‐doped silica yolk‐shell nanostructure with nickel hydrosilicate phase synthesized in water‐ethanol‐ammonia media using CTAB has significant role in glucose detection.