每周的 ISEF 获奖论文解析来了！今天小助手邀请有方导师点评 2017 年获奖课题，这篇论文的获奖学生是来自日本的团队，学科：Energy: Chemical

In order to realize a sustainable society, artificial photosynthesis has been gaining attention and has been widely studied in recent years. This research focused on tantalum oxide, which can be used to catalyze the reduction of carbon dioxide. 

In this study, it was found that tantalum oxide/tantalum plate responds to visible light, and this is a novel phenomenon. 

The objective of this research was to investigate the mechanism of this phenomenon and to make tantalum oxide/tantalum plate with a high energy conversion efficiency. The study consisted of four experiments, as follows: (i) a tantalum plate was heat-treated while varying the time, temperature, and type of gas, (ii) the voltage and electric current were measured under optical irradiation, (iii) the wavelength dependence was checked using visible light, (iv) the electric potential of the conduction band was measured using a potentiostat, and the reduction of carbon dioxide to formic acid by tantalum oxide/tantalum plate was checked. Three primary results were obtained: (i) the visible light response was not due to nitrogen doping but to other impurities in the metal and to the surface of tantalum oxide/tantalum plate, (ii) the thickness of tantalum oxide film was an important factor influencing the energy conversion efficiency, and (iii) formic acid was successfully generated from carbon dioxide. In future experiments, the ability of tantalum oxide/tantalum plate to reduce carbon dioxide efficiently using sunlight will be examined.

The energy conversion efficiency will be improved and the material will be applied as a practical solution to environmental problems.

tantalum oxide；tantalum plate；visible light；carbon dioxide；high energy conversion efficiency

该课题基于氧化钽催化二氧化碳的还原反应，解释了氧化钽对可见光的响应现象。研究通过钽板热处理、光辐射下测量电压和电流、使用可见光检查波长依赖性和使用恒电位仪测量导电的电势四个实验，解释了光响应现象的机理，并根据其机理制造出具有高能量转换效率的氧化钽/钽板。氧化钽/钽板的使用将提高能量的转化效率，并且可以该材料将作为环境问题的实用解决方案。

  2017 ISEF 获奖论文  

（ Chemistry ）

通过研究鞭毛结构来治疗人类相关疾病

导师：加州大学洛杉矶分校 （ UCLA ）

• 博士就读于UCLA分子生物学专业。

• 本科期间获得全额奖学金资助参加多次国际学术交流项目。

• 参与大学生创新实验项目获得国家级，大学生挑战杯项目国家级等多项科研项目；

• 目前已经在Nature communication等顶级杂志上发表多篇学术论文，有着丰富的海外留学经验以及科研经验；

• 被UCLA选中担任experienced TA和TA的instructor来指导其他的研究生如何进行本科生和研究生的教学，有着丰富的教学和指导经验。

在教学过程中，每节课都有详细的课堂以及作业反馈。还有助教老师全程监督与辅导，使学习高效，学到更多知识。

有方访谈室 | 为何放弃藤校选择NU，你对未来的愿景是否和他一样？| 专访 ISEF 评委

有方访谈室 | 有方导师-ISEF评委：“做科研，这三点缺一不可！”

有方访谈室 | ISEF评委经验全分享，千万要避开的雷区你知道吗？！

有方访谈室丨斯坦福大学博士导师给你最自由的科研经历

有方访谈室丨丘奖金牌导师：「 接地气 」可能让丘奖评委更关注你。

有方访谈室 | 丘奖男神导师为何会放弃哈佛选择CMU，你想去的梦校有灵魂吗?

有方访谈室 | 托福阅读和听力满分，还是科研大神跟自由插画家，她怎么做到的？

有方访谈室 | 普林斯顿荣誉毕业生，Facebook工程师…今天就来听听大神当时的申请故事！内附超大礼包！

有方访谈室 | Stanford本硕，DeepMind工程师，斯坦福女神来分享她的故事

添加小师姐，一对一免费咨询