光触媒(TiO2)的发现始于1971年，其奠基人Akira FUJISHIMA现任日本东京大学电子化学教授，多次获得学术奖章，同时，在日本学术界担任许多重要职务，学术活动十分活跃。

         在2005年，FUJISHIMA教授在日本应用物理学会年刊上发表重要文章，题为“TiO2 Photocatalysis: A Historical Overview and Future Prospects ”，意思是，TiO2光催化现象：历史综述与未来展望，此文学术水平很高，内容全面，值得我们阅读与借鉴。

为忠实于原文，现将该文结束语摘引如下：

          “In this paper, an overview of the development of TiO2 photocatalysis and its future prospects from both scientific and technological viewpoints are given. It is interesting to note that this field has experienced major developments every ten years for the last thirty years, namely, water photoelectrolysis (Honda–Fujishima effect) in the early 1970s, photocatalytic H2 production in the 1980s, and the photocatalysis and hydrophilicity of TiO2 films in the 1990s. Based on the basic research results, real industrial applica-tions have been achieved since the end of the 1990s. In addition, this field is still being developed further in the 21st century. We believe that TiO2 photocatalysis is one of the best examples how, on the time scale of tens of years, basic scientific knowledge can be developed into a technological field and can produce a new industry .”

          这段话的中心意思是什么呢？二氧化钛（TiO2）光触媒的近代发展分为三个阶段：1970年代，水的电分解；1980年代，利用光触媒生产氢气（H2）；1990年代，光触媒与强亲水性的应用；20世纪，光触媒与强亲水性的深入应用。最后，FUJISHIMA教授点出了全文的要点：“......basic scientific knowledge can be developed into a technological field and can produce a new industry ”，意思是说，基础科学知识能够发展成为技术性的领域，并且能够产生新的行业（Industry）。

       看起来，数理化，天地生的这个”经“还是要念下去的。