2014-01-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/706283摘要：太陽能是地球生物的終極能源，光合作用的機制顯示，植物將CO2轉化葡萄糖是經過兩階段，光反應先分解水後釋放出O2，產生的氫再進行Calvin暗反應去還原CO2。本計畫是V&#352;B捷克科技大學 (Ostrava)和台灣大學共同研發轉化CO2成為再生能源的的新技術。將模仿光合作用，進行光催化水分解-CO2還原成再生燃料。預計以三年進行，台灣的台灣大學第一年是水分解薄膜法分離氫和氧+光催化氫化CO2，雙胞反應器使用離子交換膜將H2/O2分離，組合最佳水分解及光催化氫化CO2觸媒，尋求最適化條件；第二年水分解光電化學法分離氫和氧+光催化氫化CO2，使用薄膜光觸媒將H2/O2分離，進行暗反應氫化CO2；第三年研發雙功光觸媒，在同一個觸媒，同時催化水產氫並進行CO2還原成碳氫化合物，並進行實際太陽光能測試反應系統。V&#352;B捷克科技大學第一年將已溶凝膠法製備TiO2和檢測其物化特性；第二年將測試觸媒的CO2光催化還還的活性；第三年將研究光催化活性和觸媒的物化特性關聯性。預期可類比甚至超過光合作用的光量子效率，比其他再生生質能源較具有經濟競爭力，貢獻於永續的再生能源發展。<br> Abstract: Solar energy is the ultimate energy source for all life in earth. The mechanism of photosynthesis indicates that the conversion of CO2 into glucose is by two steps. That is, O2 is released from water splitting in the light reaction, and then the generated hydrogen is to hydrogenate CO2 in the Calvin cycle (dark-reaction). This proposal is the collaboration between the V&#352;B-Technical University of Ostrava at Czech Republic (V&#352;B-TUO) and National Taiwan University (NTU) at Taiwan to develop a novel method to convert CO2 into renewable energy. This method imitates the photosynthesis to develop a process of photocatalytic water splitting following CO2 hydrogenation into hydrocarbons. This is a 3-year proposal. NTU will (1) perform photocatalytic H2O splitting and CO2 hydrogenation by membrane separation method. A twin reactor with ion-exchanged membrane can separate H2/O2 during photoreactions. We will search the optimum conditions to combine water splitting and CO2 hydrogenation in the first year; (2) perform photocatalytic H2O splitting and CO2 hydrogenation by photoelectrochemical method. A thin-film photocatalyst can separate H2/O2 during photoreactions. CO2 is hydrogenated at the dark condition in the second year; (3) design and synthesize a dual-function photocatalyst, which can simultaneously split water and reduce CO2 into hydrocarbons. Real sunlight will be used on the photoreaction system in the third year. V&#352;B-TUO will (1) prepare TiO2-based photocatalysts by sol-gel method and their characterization; (2) Test the prepared photocatalysts for CO2 photocatalytic reduction in the presence of water; (3) correlate the photocatalytic performance and physical chemical properties of the prepared photocatalysts. The result is expected to be comparable or even exceed the photosynthesis in term of quantum efficiency. This process will be economically competitive to other biomass methods. Such technique is a great contribution in sustainable energy.二氧化碳光觸媒太陽能再生能源CO2photocatalystsolar energyrenewable energy