A simple polycondensation of monocarboxylic acids with silicon alkoxides led to transparent silica gels mainly comprised of silicate species of closed structures. This 'sol-gel formic acid' approach was modified by trapping an organic template (dodecanol) inside the silicate network during the polymerization process. Using this templating approach, porous silica of extremely high surface area, was produced in contrast to non-porous silica obtained by non-templating approach. The S(BET) surface areas of the template assisted samples resulting from the entire pores were found to be up to 725 m(2)/g. The total pore volumes of the samples were in the range of 0.40-0.74 cc/g in which micropore volumes were about 0.15-0.25 cc/g; the porosity depending on the reactants molar ratios of dodecanol, silicon alkoxide and formic acid.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jcis.2008.05.037 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
High-intensity focused ultrasound: an innovative approach for micro-manipulation of demineralized dentine.
J Transl Med
January 2025
Dental School, The University of Western Australia, 17 Monash Avenue, Nedlands, WA, 6009, Australia.
Background: Treatment of deep carious lesions poses significant challenges in dentistry, as complete lesion removal risks compromising pulp vitality, while selective removal often reduces the longevity of restorations. Herein, we propose a minimally invasive approach using High-Intensity Focused Ultrasound (HIFU) for microscale removal of carious dentine. Concurrently, HIFU's antimicrobial effects against associated cariogenic biofilms and the corresponding thermal and biological impacts on surrounding tissues were investigated.
View Article and Find Full Text PDFGroundwater nitrate response to hydrogeological conditions and socioeconomic load in an agriculture dominated area.
Sci Rep
January 2025
School of Water and Environment, Chang'an University, No.126 Yanta Road, Xi'an, 710054, Shaanxi, China.
Nitrate pollution is widespread environmental concern in most shallow groundwater systems. This study conducts a comprehensive investigation of shallow groundwater, deep groundwater, and surface water in a region of the Chinese Loess Plateau. Nitrate pollution in this area is severe with more than half of the shallow groundwater samples exceeding the limit of nitrate for drinking water (50 mg/L).
View Article and Find Full Text PDFNew insights in the low-temperature-dependent formation of amorphous titania-coated magnetic polydopamine nanocomposites for the adsorption of methylene blue.
Sci Rep
January 2025
Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guian, 550025, China.
Removal of accumulated dyes from the environment water bodies is essential to prevent further harm to humans. The development and design of new alternative nanoadsorbents that can conveniently, quickly, and efficiently improve the adsorption and removal efficiency of dyes from wastewater remains a huge challenge. An amorphous TiO with a magnetic core-shell-shell structure (FeO@PDA@a-TiO, denoted as FPaT) was constructed through a series of steps.
View Article and Find Full Text PDFStructural basis for the transport and regulation mechanism of the multidrug resistance-associated protein 2.
Nat Commun
January 2025
Laboratory of Membrane Biology and Biophysics, The Rockefeller University, New York, NY, USA.
Multidrug resistance-associated protein 2 (MRP2) is an ATP-powered exporter important for maintaining liver homeostasis and a potential contributor to chemotherapeutic resistance. Using cryogenic electron microscopy (cryo-EM), we determine the structures of human MRP2 in three conformational states: an autoinhibited state, a substrate-bound pre-translocation state, and an ATP-bound post-translocation state. In the autoinhibited state, the cytosolic regulatory (R) domain plugs into the transmembrane substrate-binding site and extends into the cytosol to form a composite ATP-binding site at the surface of nucleotide-binding domain 2.
View Article and Find Full Text PDFBiocompatible 2D Material Inks Enabled by Supramolecular Chemistry: From Synthesis to Applications.
Acc Chem Res
January 2025
Department of Chemistry, The University of Manchester, Manchester M13 9PL, United Kingdom.
ConspectusThe emergence of two-dimensional (2D) materials, such as graphene, transition-metal dichalcogenides (TMDs), and hexagonal boron nitride (h-BN), has sparked significant interest due to their unique physicochemical, optical, electrical, and mechanical properties. Furthermore, their atomically thin nature enables mechanical flexibility, high sensitivity, and simple integration onto flexible substrates, such as paper and plastic.The surface chemistry of a nanomaterial determines many of its properties, such as its chemical and catalytic activity.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!