二氧化钛论文答辩PPT

子西莱专业生产纳米二氧化钛，有关纳米二氧化钛制备的论文可以登录子西莱网站查找或咨询客服！子西莱纳米二氧化钛（光触媒）白色粉末状物品，产品具有强大的光催化氧化还原能力、化学稳定性高、无毒。在紫外光、太阳光、日光灯的作用下纳米二氧化钛（光触媒）价带上的电子（eˉ）就可以被激发跃迁到导带，在价带上产生相应的空穴（h+）。随后h+和eˉ与吸附在纳米二氧化钛表面上的H2O、O2等发生作用，生成OHˉ、O2ˉ、OOHˉ等高活性集团，具有极强氧化作用的超氧离子自由基、羟基自由基、超氧羟基自由基，能将甲醛、苯、甲苯、二甲苯、氨、TVOC等有害有机物、污染物臭气、细菌、病毒等氧化分解成无害的CO2和H2O。充分体现出了纳米二氧化钛（光触媒）催化剂的抑菌、杀菌、消毒、去除污染物、亲水性、自洁性等特性，不产生二次污染，所以是理想的环保产品。

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Organophosphorus pesticides in agricultural production of the pesticides most widely used one of the Pharmacy, as under certain conditions in the refractory and in animals can be characterized by deposition of organic phosphorus pesticide wastewater treatment in recent years, environmentalists have become the focus of the Represented by a nano-TiO2 photocatalytic oxidation technology to the use of atmospheric pressure at room temperature, sunlight catalytic oxidation of pollutants, and the product is generally carbon dioxide, water and other inorganic small molecule, does not have secondary However, nano-TiO2 larger band gap of only less than 388nm in the UV wavelength only catalytic performance, that is, the utilization of solar TiO2 only about 5% In order to improve the nano-TiO2 on the utilization of sunlight so that it can in the visible range of organophosphorus pesticide degradation of waste water have a certain effect, this paper conducted the following studies: By hydrothermal synthesis at low temperatures, respectively, under the conditions of urea to ammonia and sulfur and nitrogen as nitrogen source, sulfur source was prepared N-doped, NS Co-doped TiO2 nano-doped after the use of modified nano-TiO2 below 400nm in the least squares UV irradiation on the iodine-tungsten lamp 10000 times diluted omethoate 40% degradation, the degradation rate was The main conclusion of the study paper is as follows: (1) and TiO2 compared, N-doped, NS Co-doped TiO2 nanometer obvious visible activity under the visible light Omethoate degradation of pesticides has a good (2) reaction temperature, the ammonia content on the N-doped TiO2 nano-catalytic activity has a great impact, with the increase in ammonia content in the catalytic activity of nano-TiO2 increased (3) NS thiourea content of Co-doped TiO2 nano-catalytic activity, with the increase of thiourea concentration of nano-TiO2 photocatalytic activity gradually (4) study found that the preparation of N-doped nano-TiO2 as a white powder, while the NS Co-doped TiO2 nano-to-brown Co-doped TiO2 nano-NS than the N-doped TiO2 nano-high photocatalytic activity for degradation of omethoate Keywords: TiO2, photocatalytic degradation, visible light, doped, omethoate,

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二氧化钛（TO2）又称钛白粉，无毒、化学性质稳定，广泛用于化工、涂料、塑料、橡胶、纤维、造纸、油墨、搪瓷、电子等行业，是电子、化工、轻工、冶金等行业不可缺少的工业原料。二氧化钛主要晶型有金红石型（R）和锐钛型（A），两种晶型的二氧化钛硬度、密度、折光指数、光催化活性等都有所不同。

二氧化钛, 亦称 titania 是自然发生的氧化物钛, 化学式TiO2。 纯净的二氧化钛不发生在本质里而是从钛铁矿或leuxocene 矿石被获得。它欣然也被开采在最纯净的形式的当中一个, 金红石海滩沙子中。 二氧化钛是广泛被应用的白色颜料由于其亮光和非常高折射率(n= 4), 它只由金刚石超过。当存款作为薄膜, 其折射率和颜色做它优秀反射性光学涂层为电介质镜子。TiO2 并且是有效的不透光剂以粉末形式, 它被使用因为颜料提供苍白和不透明对产品譬如油漆、涂层、塑料、论文、墨水、食物, 和多数牙膏。在化妆用品和护肤品, 二氧化钛被使用作为颜料和浓化剂, 并且在几乎每sunblock 与一个物理预锻模, 二氧化钛被发现由于其折射率和其对色变的抵抗在紫外光之下。这好处提高其稳定和能力保护皮肤免受紫外光。 Vinland 地图, 美国("Vinland" 地图) 假想被画了在中间第15 个世纪期间根据了数据从Viking 年龄, 被宣称伪造根据墨水对此遏制TiO2 形式anatase 的踪影; TiO2 综合性地未被生产在20 年代之前(1992) 反诉最近被做化合物可能被形成从古老墨水。参考资料：%B6%FE/%B6%FE%D1%F5%BB%AF%EE%Dhtm