Ultrathin Sulfonated Mesoporous Silica Film with Well-Ordered Perpendicular Mesochannels: In-Situ Preparation, Characterization and Permselectivity

In this paper, a new type of ultrathin sulfonated mesoporous silica film (SMSF) with well-ordered perpendicular mesochannels was in-situ synthesized by Stöber approach and co-condensation method. The mesostructure of the synthesized SMSF was characterized. The results of small-angle XRD, high-resolution TEM, and cyclic voltammetry (CV) exhibited that, after loading of MPTMS, SMSF had an ordered mesostructure with a perpendicular orientation and open ends. SEM showed that SMSF could be entirely transferred and easily handled. FT-IR presented that sulfonic groups were successfully added to the surface of the nanochannels of silica film. Compared with mesoporous silica film (MSF) and commercial cation exchange membrane (CEM), SMSF had the highest permselectivity. The permselectivity of SMSF was not lined with the loading of the sulfonic groups (–SO3H). The highest permselectivity of SMSF to Na[Formula: see text] was 94% when the loading of MPTMS was 5.98% (wt.%). SMSF is a promising material in the application of salinity gradient energy harvest.

Vertically oriented mesoporous silica film modified fluorine-doped tin oxide electrode for enhanced electrochemiluminescence detection of lidocaine in serum

Sensitive detection of lidocaine in serum is realized using enhanced electrochemiluminescence based on a vertically oriented mesoporous silica film modified fluorine-doped tin oxide electrode.

Templated electrodeposition of vertically aligned copper oxide nanowire arrays on 3D Ni foam substrates for determination of glucosamine in pharmaceutical caplet samples

A copper oxide nanowire network electrode has been fabricated through an electrodeposition procedure using mesoporous silica film as the template on Ni foam.