%0 Journal Article
%T Photobiological Effects of Nano-TiO2 Semiconductors Sol<br>纳米TiO2半导体溶胶的光生物学效应
%A ZHANG Ping
%A CUI Hai-Xin
%A LI Ling-Ling
%A <br>张 萍
%A 崔海信
%A 李玲玲
%J 无机材料学报
%D 2008
%I Science Press
%X Nano-TiO2 semiconductors sol (NTSS) was synthesized through a sol-gel method, and its antibacterial abilities were identified by using bacterial pathogens of Pseudomonos syringae pv. lachrymans and Xanthomonas vesicatoria. Taking cucumber plants as experimental objects, the photobiological effects of NTSS on preventing from plant bacterial/fungal diseases and promoting contents of photosynthetic pigments were primarily studied. Results show that crystal species of TiO2 particles synthesized in experiments are in anatase phase with average size of about 30.6nm. NTSS possesses strong oxidizing power with over 99.9% antibacterial rate by forming continuous and stable antibacterial films on surfaces of substance. Lesion areas, disease incidences and disease indexes of leaves can be significantly reduced by spraying NTSS on cucumber leaves; however, content of chlorophyll and carotenoid in leaves can be significantly promoted. It is proved that NTSS can significantly prevent and control the development and pervasion of bacterial angular leaf spot of cucumber. The experimental results lay an important theoretical foundation and technical approach for developing and applying of biofuntional nanomaterials in agricultural areas.
%K nanomaterial
%K TiO2
%K plant disease
%K prevention
%K photosynthetic pigments<br>纳米材料
%K TiO2
%K 植物病害
%K 防治
%K 光合色素
%K 纳米
%K 半导体
%K 溶胶
%K 生物学效应
%K Semiconductors
%K 作用
%K 类胡萝卜素
%K 叶绿素
%K 抑制效果
%K 发生
%K 霜霉病
%K 黄瓜细菌性角斑病
%K 病情指数
%K 发病率
%K 面积
%K 浓度
%K 喷施
%K 发现
%K 病害调查
%K 田间
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=4A3DF9CF780F20E78455DCDCB396F848&yid=67289AFF6305E306&vid=EA389574707BDED3&iid=CA4FD0336C81A37A&sid=E514EE58E0E50ECF&eid=BFE7933E5EEA150D&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=0&reference_num=25