Gold nanoparticles decorated mesoporous silica microspheres: A proficient electrochemical sensing scaffold for hydrazine and nitrobenzene

A new near-infrared ratiometric fluorescent probe for hydrazine

“…To date, several conventional analytical techniques, including chromatography-mass spectrometry, [10][11][12] spectrophotometry 13 and electrochemical methods [14][15][16][17][18] have been exploited to measure hydrazine. But most of the methods mentioned previously are costly, complicated and time consuming for realtime and on-site analysis.…”

Improving Functional Behavior of MCM‐41 by Encapsulating MnO2 Nanorods towards Simultaneous Determination of Purine Bases in DNA Samples

“…The -OH stretching vibration of the silanol group and adsorbed water molecules generate broad peak around 3400 cm À1 [11]. For MCM-41 ( Figure 1Ca) a broad peak is observed at 238 (2q) which is an indicative of distinctive hollow pattern of silica [11,12,20]. For MCM-41 ( Figure 1Ca) a broad peak is observed at 238 (2q) which is an indicative of distinctive hollow pattern of silica [11,12,20].…”

“…MCM-41 was synthesized using previously reported, CTAB templated synthetic approach as given in literature [11,12,20,[24][25][26] using TEOS. For the synthesis of MnO 2 @MCM-41, ethanolic dispersion of MCM-41 was ultrasonicated for 1 h with Mn 2 + (MnCl 2 · 4 H 2 O) to obtain a clear solution [27].…”

“…Amongst them, the most popular mesoporous sieves, MCM-41 have been efficaciously utilized as template, catalyst, catalyst support, etc. Many studies related to the incorporation of metal or metal oxide nanoparticles like Au [11,12,20], Ag [21], TiO 2 [22], ZnO [23], etc. Among the transition metal oxide nanomaterials, numerous morphological variants of MnO 2 have been reported by various research groups owing to their crystalline behavior, ultrahigh specific capacitance, low cost, excellent conducting properties, environmental friendliness and natural abundance which have gained extensive attention in the area of catalysis, ion exchange, water treatment, electrochemical supercapacitors, lithium-ion batteries, and biosensors [15][16][17][18][19].…”

Surface functionality density regulated in situ reduction of nanosilver on hierarchial wrinkled mesoporous silica nanoparticles and their antibacterial activity

“…Among the large varieties of carrier materials widely used, mesoporous silica (MS) such as MCM-41, SBA-15 and SBA-16 has long been studied as an ideal candidate for the shielding and sustained releasing of their payload owing to its high specic surface areas, long-range ordered pore channel and various pore structures, [8][9][10] which is frequently employed in catalysis, [11][12][13] separations, 14,15 chemical sensing, [16][17][18] and controlled release. 19,20 Over the past decades, the research efforts on MS-supported Ag NPs are mostly focused on the exploration of appropriate structure regulation of Ag NPs in the MS matrix.…”