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The present study reports the preparation and characterization of silica-based immobilization matrices for the purpose of metal accumulation using immobilized cyanobacterium Nostoc calcicola. Silica gel was prepared using aqueous sodium silicate and colloidal silica. Calcium alginate (CAG) beads were coated with silica using sodium silicate solutions. Microscopy observations and TTC tests confirmed...
Introduction One major problem in the photovoltaic industry is the high price of refined solar grade silicon. In this research, a new method for refining metallurgical grade silicon to solar grade silicon is investigated. Methods The main steps include alloying with copper, solidification, grinding and gravity separation. Results A metallography study showed the presence of only two microconstituents,...
Silicon is one of the most important elements in the current age of the anthropocene. It has numerous industrial applications, and supports a high-tech multi-billion Euro industry. Silicon has a fascinating biological and geological cycle, interacting with other globally important biogeochemical cycles. In this review, we bring together both biological and geological aspects of the silicon cycle to...
2,4-Bis(trimethylsilyl) substituted n-pentasilane Me3SiSiMe(SiMe3)SiMe2SiMe(SiMe3)SiMe3 (1) has been prepared from Me2SiCl2 and (SiMe3)2SiMeK, and its solid state molecular structure has been determined by single crystal X-ray diffraction. By reaction of 1 with KOtBu and subsequent treatment of the resulting silyl anion with (MeO)2SO2, the novel hexasilane Me3SiSiMe(SiMe3)SiMe2SiMe2SiMe3 (2) has been...
Five silane blends were evaluated as experimental adhesion-promoter primers. First, five organosilane monomers (silicon esters), 3-acryloxypropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, tetrakis-(2-ethyloxyethoxy)silane and bis-[3-(triethoxysilyl)propyl]tetrasulfide, were diluted to 1% (v/v) and blended with a non-functional cross-linking silane, 1,2-...
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