The present work investigates the size dependent reflective properties of TiO2 nanoparticles and discusses the development of reflectors. The nanocrystalline TiO2 powders with different crystallinity and phase structures were obtained by controlling the reaction parameters. TiO2 nanoparticles synthesized via sol-gel method were characterized by using X-ray diffraction (XRD), transmission electr...

The use of low-carbon supplementary cementitious materials (SCM), such as calcined clays, to replace cement clinker has been recognized by the Cement Industry achieve reductions in greenhouse gas emissions. This paper investigates eight low-grade with <20% kaolinite, obtained from different geological formations, that have produce potential SCMs. clays were characterised before and after calcin...

nanocrystalline complex oxides have been synthesized by combination of sol–gel auto combustion and ultrasonic irradiation techniques using copper nitrate, zinc nitrate as metallic nitrates and glycine, urea and thiourea as fuels. sol-gel combustion (combination of the chemical sol–gel process and the combustion process) as a proper synthesized technique is used to synthesize zno/cuo nanocomposi...

The promotional effect of Zn was investigated relative to the calcining activation HZSM-5. It found that lignin separated from walnut shell could be liquefied into small molecular ethers such as anisole by modified catalyst. Experimental results showed that, after loading Zn, HZSM-5 catalyst retained its original crystal structure, which exhibited good metal dispersion. Besides, due existence ...

A facile two-step strategy involving a solvothermal method and a subsequent calcining treatment was successfully developed for the preparation of MoV2O8 nanorods in the absence of any surfactants. Acetic acid was chosen as the solvent to provide an acidic environment. The as-synthesized MoV2O8 nanorods were evaluated as an anode material in lithium ion batteries, which showed excellent lithium ...

In this work, we prepared oriented mesoporous thin films of silica on various solid substrates using the pluronic block copolymer P123 as a template. We attempted to insert guest iron oxide (FexOy) nanoparticles into these films by two different methods: (a) by co-precipitation-where iron precursors are introduced in the synthesis sol before deposition of the silica film-and subsequent oxide pr...

Homogeneity is of utmost importance in some applications light-burnt magnesia (LBM), such as shrinkage compensation cement composites, because if it not detected reliably before application, causes unpredicted expansion and cracking. This paper presents an accelerated method for homogeneity thermal history detection LBM. The proposed provides equation computing the weighted mesopore probability...