New visible transparent, UV absorption, and high infrared reflection properties have been realized by depositing multilayer Si O2/Zn O: Al/Ce O2-Ti O2/Si O2 films onto glass substrates at low temperature by radio freq...New visible transparent, UV absorption, and high infrared reflection properties have been realized by depositing multilayer Si O2/Zn O: Al/Ce O2-Ti O2/Si O2 films onto glass substrates at low temperature by radio frequency magnetron sputtering. Optimum thickness of Si O2, Zn O: Al(ZAO) and Ce O2-Ti O2(CTO) films were designed with the aid of thin film design software. The degree of antireflection can be controlled by adjusting the thickness and refractive index. The outer Si O2 film can diminish the interference coloring and increase the transparency; the inner Si O2 film improves the adhesion of the coating on the glass substrate and prevents Ca2+, Na+ in the glass substrate from entering the ZAO film. The average transmittance in the visible light range increases by nearly 18%-20%, as compared to double layer ZAO/CTO films. And the films display high infrared reflection rate of above 75% in the wavelength range of 10-25 μm and good UV absorption(> 98%) properties. These systems are easy to produce on a large scale at low cost and exhibit high mechanical and chemical durability. The triple functional films with high UV absorption, antireflective and high infrared reflection rate will adapt to application in flat panel display and architectural coating glass, automotive glass, with diminishing light pollution as well as decreasing eye fatigue and increasing comfort.展开更多
纳米二氧化钛(n Ti O2)在被人们广泛使用的同时,其潜在的环境影响也受到越来越多的关注。为深入探讨n Ti O2与环境中现有污染物的相互作用及生物效应,以斜生栅藻(Scenedesmus obliquus)为受试生物,按照毒性单位法、相加指数法和混合毒...纳米二氧化钛(n Ti O2)在被人们广泛使用的同时,其潜在的环境影响也受到越来越多的关注。为深入探讨n Ti O2与环境中现有污染物的相互作用及生物效应,以斜生栅藻(Scenedesmus obliquus)为受试生物,按照毒性单位法、相加指数法和混合毒性指数法,研究了n Ti O2与双酚A(BPA,一种常见的环境类雌激素)的联合毒性效应。结果显示,n Ti O2与BPA对S.obliquus生长的72 h半抑制浓度(EC50)分别为28.7 mg·L-1与1.81 mg·L-1。而n Ti O2与BPA共存时,在不同毒性比(4:1,3:1,2:1,1:1,1:2和1:3)下,其联合毒性作用(以BPA计)的72 h EC50值分别为2.198,1.58,1.153,0.428,0.306和0.189 mg·L-1。两者的联合毒性作用不仅仅是简单的相加,而是随着两者毒性比的变化,由拮抗作用转变为相加作用,继而转变为协同作用。这表明,n Ti O2进入环境后与现有污染物的毒性比(浓度比)可能是其联合毒性作用模式的一个重要影响因素。展开更多
基金Funded by the Natural Science Foundation of Hubei Province(No.2014CFB563)the key Technology Innovation Project of Hubei Province(No.2013AAA005)China Postdoctoral Science Foundation(Nos.2013T60752 and 2012M511689)
文摘New visible transparent, UV absorption, and high infrared reflection properties have been realized by depositing multilayer Si O2/Zn O: Al/Ce O2-Ti O2/Si O2 films onto glass substrates at low temperature by radio frequency magnetron sputtering. Optimum thickness of Si O2, Zn O: Al(ZAO) and Ce O2-Ti O2(CTO) films were designed with the aid of thin film design software. The degree of antireflection can be controlled by adjusting the thickness and refractive index. The outer Si O2 film can diminish the interference coloring and increase the transparency; the inner Si O2 film improves the adhesion of the coating on the glass substrate and prevents Ca2+, Na+ in the glass substrate from entering the ZAO film. The average transmittance in the visible light range increases by nearly 18%-20%, as compared to double layer ZAO/CTO films. And the films display high infrared reflection rate of above 75% in the wavelength range of 10-25 μm and good UV absorption(> 98%) properties. These systems are easy to produce on a large scale at low cost and exhibit high mechanical and chemical durability. The triple functional films with high UV absorption, antireflective and high infrared reflection rate will adapt to application in flat panel display and architectural coating glass, automotive glass, with diminishing light pollution as well as decreasing eye fatigue and increasing comfort.
文摘纳米二氧化钛(n Ti O2)在被人们广泛使用的同时,其潜在的环境影响也受到越来越多的关注。为深入探讨n Ti O2与环境中现有污染物的相互作用及生物效应,以斜生栅藻(Scenedesmus obliquus)为受试生物,按照毒性单位法、相加指数法和混合毒性指数法,研究了n Ti O2与双酚A(BPA,一种常见的环境类雌激素)的联合毒性效应。结果显示,n Ti O2与BPA对S.obliquus生长的72 h半抑制浓度(EC50)分别为28.7 mg·L-1与1.81 mg·L-1。而n Ti O2与BPA共存时,在不同毒性比(4:1,3:1,2:1,1:1,1:2和1:3)下,其联合毒性作用(以BPA计)的72 h EC50值分别为2.198,1.58,1.153,0.428,0.306和0.189 mg·L-1。两者的联合毒性作用不仅仅是简单的相加,而是随着两者毒性比的变化,由拮抗作用转变为相加作用,继而转变为协同作用。这表明,n Ti O2进入环境后与现有污染物的毒性比(浓度比)可能是其联合毒性作用模式的一个重要影响因素。
