One of the most revolutionary materials introduced in Endodontics was the Mineral Trioxide Aggregate (MTA). The investigations regarding MTA formulation allowed researchers to disclose the composition and also some clinical problems related to the clinical application of this material. The augmentation on MTA’s studies resulted in the development a new generation of Endodontic materials, the ca...

Green mesoporous SBA-15 was synthesized by using corn stack ash (CSA), a new renewable silica source, as the main raw material. 80 wt% sodium silicate solution from CSA mixed with tetraethyl orthosilicate (TEOS) solution, and fi nally after hydrothermal process, SBA- 15 obtained. Subsequently, iron metal incorporated into prepared used an effi cient Fenton catalyst for degradation of indigo car...

Nanoconfined synthesized crystalline fullerene mesoporous carbon (C60-FMC) with bimodal pore architectures of 4.95 nm and 10-15 nm pore sizes characterized by XRD, TEM, nitrogen adsorption/ desorption isotherm and solid-state NMR, and the material was used for protein immobilization. The solid-state 13C NMR spectrum of C60-FMC along with XRD, BET and TEM confirms the formation of fullerene meso...

A sample of J–type carbon stars was searched for OH maser emission. The new detection of three OH lines towards two silicate carbon stars is reported. In V778Cyg, previously known as the main–lines (1665 and 1667MHz) maser source, the satellite 1612MHz emission was discovered while in NSV2814 the main OH lines were detected. The presence of OH maser lines confirms the former suggestion that oxy...

Aluminium, the third most abundant element in the earth’s crust, occurs in nature in combination with silicon and oxygen (i.e. as aluminium silicate). When subject to tropical weathering, aluminium silicate may react to form aluminium hydroxide. Rock containing high concentrations of aluminium hydroxide is called bauxite. This rock is the usual starting material for the production of aluminium....

Olivine-structured lithium iron silicate is one of the promising cathodes for development high energy ion batteries. This article describes synthesis phase-pure mesoporous Li2FeSiO4/C nanocomposite particles by a modified sol–gel processing via alkoxide route. Controlled polymerization Si mediated partial hydrolysis in conjunction with copolymerization Fe precursors chelated citric acid minimiz...

Mesoporous structures can increase catalytic activity by maximizing the ratio of surface area to volume, but current synthesis techniques utilize expensive polymers and toxic chemicals. A Geobacter sulfurreducens biofilm was used as a sustainable template to form mesoporous Pd structures while eliminating the need for synthetic chemicals. The bulk of the biofilm material was removed by thermal ...

Grinding (solvent-free) method was used as a superior technique to prepare mesoporous photocatalysts of ZnO, ZnS, ZnO / ZnS, CdO, CdS and CdO / CdS-SBA-15. In this technique, the nitrate, acetate and chloride salts of zinc and/or cadmium were grinded with as-synthesized SBA-15 as a mesoporous material. The controllable sulfurationis was used to prepare ZnS, ZnO/ZnS, CdS and CdO/CdS-SBA-15 a...

Alkali activated binders are a new class of binding material with comparable or enhanced performance to Portland cement. These binding materials are obtained by a chemical reaction between an alumino-silicate material and a highly alkaline solution. In most cases, the setting-hardening process of this binder is performed at high curing temperatures. In this paper, alkali activated mortars based...