Studies on the oxygenation of human blood by photocatalytic action
Studies on the oxygenation of human blood by photocatalytic action
复制标题
DOI：
10.1111/j.1525-1594.2007.00468.x
复制
发表时间：
2007-11-01
影响因子：
2.4
通讯作者：
Ramesh, T. Paul
中科院分区：
文献类型：
--
作者：
Subrahmanyam, Aryasomayajula;Arokiadoss, Thevasahayam;Ramesh, T. Paul
本文利用纳米TiO 2薄膜光催化分解水生成氧气的原理，对人体血液充氧的概念进行了论证。光催化作用涉及吸收UV光能（365 nm）以将血液中可用的水分解成氧和氢，并且所产生的氧附着于血红蛋白。在本研究中，通过在掺锡氧化铟（ITO）薄膜上制备纳米TiO 2薄膜，形成TiO 2/ITO半导体结，实现了增强的催化作用。这些二氧化钛和ITO薄膜和半导体结生长的反应直流磁控溅射技术（使用纯金属靶）在室温下（300 K），随后在870 K退火60分钟。退火过程（i）影响的二氧化钛的α相的形成;和（ii）扩散铟从ITO到二氧化钛，形成InTi 2 O 5。ITO和InTi_2 O_5的功函数分别为4.72和4.76 eV。较高的光催化作用效率归因于ITO的较低功函数。结果清楚地表明，光催化作用显著增加了血液中的氧含量。
The present article gave the proof of concept for oxygenating human blood using the established principles of photocatalytic action of anatase TiO2 thin films in generating oxygen from water. The photocatalytic action involves the absorption of the UV optical energy (365 nm) to split water available in the blood into oxygen and hydrogen, and the generated oxygen is attached to the hemoglobin. In the present study, an enhanced catalytic action was achieved by preparing the nanosized anatase TiO2 thin films on tin-doped indium oxide (ITO) thin films, forming TiO2/ITO semiconducting junction. These TiO2 and ITO thin films and the semiconducting junctions were grown by the reactive DC Magnetron sputtering technique (using pure metallic targets) at room temperature (300 K) and subsequently annealed at 870 K for 60 min. The annealing process (i) influenced the formation of the anatase phase of TiO2; and (ii) diffused indium from ITO into TiO2, forming InTi2O5. The work functions of ITO and InTi2O5 were measured to be 4.72 and 4.76 eV, respectively. The higher efficacy of the photocatalytic action was attributed to the lower work function of ITO. The results clearly show that the photocatalytic action increases the oxygen content in the blood significantly.