Q95166884
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Modification of surface of silicates materials with organic functional groups has been widely investigated in recent years. The modified materials are used in separation technology, electronic devices, controlled drug delivery and in chemical processes using immobilized catalysts. Two main methods of preparation of the materials are reviewed. The one-pot synthesis of support and its reaction with a modification agent leads to the product with even distribution of active groups but less ordered structure. The other methods are based on post-grafting of the modified support surface. The disadvantage of the latter method is often uneven distribution of active groups.
A variety of decontamination techniques are utilized to remove biological and chemical contaminants from surfaces. Nevertheless, new physical and chemical methods and agents are still being developed. The main reason is toxicity of the common used agents. This review summarizes recent findings on a new promising decontamination agent, hydrogen peroxide vapour (VPHP), with almost ideal properties. Decontamination using VPHP has become the method of choice in pharmacy, biomedical applications and health care. The VPHP method is reliable, rapid, leaves no residues (decomposes into water and oxygen) and can be validated. So far only limited information has been published about decontamination of chemical and biologically active compounds using VPHP. The definitive knowledge of its action and the influence of various factors are yet to be discovered.
