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Nanosized photocatalyst ZnS particles supported on silica and polyvinyl alcohol was successfully prepared by complex transformation method. The photocatalytic reduction of CO2 was carried out in the presence of nanosized ZnS catalyst irradiated by a high-pressure mercury-vapor lamp to give the main products of formaldehyde and ethanol. The catalytic ability of ZnS characterized by the uptaken rate of CO2P volume in the reaction system depended upon the preparing conditions of nanosized ZnS catalysts. Decreasing the concentration of Na2S and increasing the molar ratio of oxygen in the PVA to Zn2 could result in the decreasing of the size of ZnS parti- 相似文献
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1 Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｃｅｒａｍｉｃｍａｔｅｒｉａｌｓａｒｅｉｎｃｒｅａｓｉｎｇｌｙｕｔｉｌｉｚｅｄｉｎｓｔｒｕｃ ｔｕｒａｌａｐｐｌｉｃａｔｉｏｎｓｗｈｅｒｅｈａｒｓｈｅｎｖｉｒｏｎｍｅｎｔｉｓｅｎｃｏｕｎ ｔｅｒｅｄ .Ｔｈｅｉｒｌｏｗｄｅｎｓｉｔｙ ,ｈｉｇｈｈａｒｄｎｅｓｓ,ｔｈｅｒｍａｌｓｔａ ｂｉｌｉｔｙ,ａｎｄｃｏｒｒｏｓｉｏｎｒｅｓｉｓｔａｎｃｅｍａｋｅｔｈｅｍｔｏｐｌａｙａｎｉｍｐｏｒｔａｎｔｒｏｌｅｉｎｅｎｇｉｎｅｅｒｉｎｇａｐｐｌｉｃａｔｉｏｎｓ.Ｈｏｗｅｖｅｒ ,ｃｅｒａｍｉ… 相似文献
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