還原二氧化碳的裝置及方法

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

100150032

專利證號

I 439317

專利獲證名稱

還原二氧化碳的裝置及方法

專利所屬機關 (申請機關)

國立臺灣大學

獲證日期

2014/06/01

技術說明

本發明係提供一種光催化還原二氧化碳成為碳氫化合物的雙胞光反應器裝置，包含：一產氧觸媒反應器，容置包含一產氧觸媒以及第一電子傳遞媒介之水溶液，藉由光催化將水分解成氧氣與氫離子；一產氫觸媒反應器，容置包含一產氫觸媒、第二電子傳遞媒介之水溶液、二氧化碳氫化觸媒以及二氧化碳，藉由光催化還原氫離子；兩個反應器以薄膜隔離，產氧觸媒反應器分解水所產生的氫離子，透過薄膜擴散至產氫觸媒反應器，將二氧化碳轉化成碳氫化合物；同時第一電子傳遞媒介將產氧觸媒生成的電子，透過薄膜傳遞以中和產氫觸媒的電洞，之後轉換成第二電子傳遞媒介，透過薄膜擴散回到產氧觸媒反應器。 The present invention provides a twin photoreactor for carbon dioxide (CO2) reduction into hydrocarbons. The device consists of an O2-photoreactor used for loading an aqueous solution, in which contains an O2-photocatalyst and a first electron mediator to photocatalytically split water into O2 and hydrogen ion (H+); a H2-photoreactor used for loading an aqueous solution, in which contains, a H2-photocatalyst, a second electron mediator, a CO2 hydrogenation catalyst and CO2 to photocatalytically reduce H+. Two photoreactors are divided by a membrane. The H+ from water splitting in the O2-photoreactor diffuses through the membrane to the H2-photoreactor then reduces CO2 into hydrocarbons. Simultaneously, the first electron mediator carries electron from O2-photocatalyst, and transport through the membrane to neutralize the hole of H2-photocatalyst, then is converted to the second electron mediator that diffuses through the membrane to the O2-photoreactor.

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