奈米材料其分子狀態的特性有別於塊狀物質，因而過去二十年來成為顯學。奈米材料就組成成分來說，包括了金屬態､半導體､硫族化物及氧化物。氧化物奈米材料的氣相製備，往往需要高溫的氧化爐(400℃~1000℃)，而氧化物奈米材料的液相製備，水熱法､溶膠凝膠法與微乳液法亦各有優缺點。有些製程需要高溫高壓，有些有毒，有些不形成晶體，有些沒法簡單放大擴產。有鑑於上列製備法的缺點，我們提出一種水溶液製程，可以在常溫常壓下無毒地製成奈米晶體，容易簡單放大並且滿足擴產的需求。本研究實驗採用去硝化菌，係由黃胤唐老師從台南魚塭的白蝦腸子中取出單株。此菌經16s rRNA的基因定序確定菌種，且經人致病因子過濾確定其並無致病性。在植物燈的應用上，如能開發出具生產高通量700 nm的螢光粉，再透過已商業化的GaN等UV-LED光源來激發，應該能對具高產值非綠色作物的綠色農業做出貢獻。

Nanomaterials, under intense research during the past two decades, may be composed of metals, semiconductors, chalcogenides, or oxides—the last being the focus of the present study. The vapor deposition processes of oxide materials require high temperatures, from 400℃ to 1000℃. The liquid phase processes of oxide nanomaterials, like the hydrothermal method, the sol-gel method and the microemulsion method, have their pros and cons as well. In this thesis, we put forward an aqueous process that can fabricate nanostructured crystal materials under ambient condition. It is harmless to humans and easily mass-produced.We employed the denitrification bacteria extracted from the intestines of whiteleg shrimps (Litopenaeus vannamei), grown on an aquatic farm in the south of Taiwan. The strain is identified via the 16s rRNA gene sequence. It is not pathogenic—filtered via the human pathogenic gene test.In the application of plant growth lighting, if the efficiency of the phosphate material is significant increased in 700 nm, we can, with the recently developed GaN UV-LED, produce the deep-red light that is intense enough to be of great help to green agriculture in boosting the production of non-green crops

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