有色金属科学与工程
有色金屬科學與工程
유색금속과학여공정
JIANGXI NONFERROUS METALS
2015年
4期
97-103
,共7页
稀土上转换剂%钛基%锌基%铋基%光催化剂
稀土上轉換劑%鈦基%鋅基%鉍基%光催化劑
희토상전환제%태기%자기%필기%광최화제
rare earth upconversion agent%titanium-based%zinc-based%bismuth-based%photocatalyst
半导体光催化剂的最大不足在于对可见光和红外光的吸收不够,转化效率低。因此,如何设计合成能够吸收太阳光中的可见光和红外光的光催化剂是这几十年来国内外研究的重点。重点讨论利用一些稀土离子的上转换发光特征,通过掺杂来合成具有高的光吸收效率和光催化性能的催化剂。分别归纳、总结和分析了近年来稀土上转换用于改性传统半导体光催化剂,如钛基、锌基、铋基、银基、镉基和钡基光催化剂的制备和应用。比较了稀土上转换剂把可见光及近红外光转换为紫外光供光催化剂吸收利用以提高对太阳能的利用效率的研究进展,尤其是在提高光催化剂催化活性方面的贡献大小和机理。
半導體光催化劑的最大不足在于對可見光和紅外光的吸收不夠,轉化效率低。因此,如何設計閤成能夠吸收太暘光中的可見光和紅外光的光催化劑是這幾十年來國內外研究的重點。重點討論利用一些稀土離子的上轉換髮光特徵,通過摻雜來閤成具有高的光吸收效率和光催化性能的催化劑。分彆歸納、總結和分析瞭近年來稀土上轉換用于改性傳統半導體光催化劑,如鈦基、鋅基、鉍基、銀基、鎘基和鋇基光催化劑的製備和應用。比較瞭稀土上轉換劑把可見光及近紅外光轉換為紫外光供光催化劑吸收利用以提高對太暘能的利用效率的研究進展,尤其是在提高光催化劑催化活性方麵的貢獻大小和機理。
반도체광최화제적최대불족재우대가견광화홍외광적흡수불구,전화효솔저。인차,여하설계합성능구흡수태양광중적가견광화홍외광적광최화제시저궤십년래국내외연구적중점。중점토론이용일사희토리자적상전환발광특정,통과참잡래합성구유고적광흡수효솔화광최화성능적최화제。분별귀납、총결화분석료근년래희토상전환용우개성전통반도체광최화제,여태기、자기、필기、은기、력기화패기광최화제적제비화응용。비교료희토상전환제파가견광급근홍외광전환위자외광공광최화제흡수이용이제고대태양능적이용효솔적연구진전,우기시재제고광최화제최화활성방면적공헌대소화궤리。
The main problem of the semiconductor photocatalyst is that the absorption of visible light and infrared light is not enough, and the conversion efficiency is low. Therefore, how to design and synthesize the photocatalyst that can absorb visible light and infrared light in the sunlight is the focus of the research in the past few decades. In this paper, we focused on the upconversion luminescence characteristics of some rare earth ions, and the catalyst synthesized by doping with high light absorption efficiency and photocatalytic performance. The paper summarized and analyzed the preparation and application of titanium, zinc, bismuth, silver, cadmium and barium based optical catalyst system used to change the traditional semiconductor photocatalyst in recent years. The research progress of the rare earth upconversion agents converting visible light and near infrared light into ultraviolet for light absorbed by the catalyst used to improve the utilization efficiency of solar energy was compared, especially in improving the contribution and mechanism of the photocatalytic activity.