Conversion of Toluene and Water to Methylcyclohexane and Oxygen using Niobium-Doped Strontium Titanate Photoelectrodes
Conversion of Toluene and Water to Methylcyclohexane and Oxygen using Niobium-Doped Strontium Titanate Photoelectrodes
复制标题
使用掺铌钛酸锶光电极将甲苯和水转化为甲基环己烷和氧气
DOI：
10.1002/cssc.201402133
复制
发表时间：
2014
期刊：
影响因子：
8.4
通讯作者：
Kazunari Domen
中科院分区：
文献类型：
--
作者：
Vit Kalousek;Peng Wang;Tsutomu Minegishi;Takashi Hisatomi;Jun Kubota;Kazunari Domen
甲基环己烷（MCH）被认为是一种很有前途的氢载体，它使氢能够作为替代燃料来源利用，为清洁能源的未来铺平了道路。在紫外照射下，研究了用Nb: srtio3光电极从水溶液中析氧和用Pt/C电极将甲苯加氢制MCH的光电化学体系。采用Nb: srtio3单晶电极和离子/Pt/C膜电极组件（MEA）分别作为光阳极和阴极。在没有任何偏压的情况下，两电极系统的稳态电流密度为0.12 mA cm−2，持续时间为bbbb2 h，从TL生产MCH的法拉第效率为97%。这是首次证明仅使用光能从TL和水生产MCH。这意味着光能直接从TL和水转化为MCH，而不需要任何电力。讨论了器件的PEC性能。
Methylcyclohexane (MCH) is regarded as a promising hydrogen carrier that enables hydrogen to be harnessed as an alternate fuel source, which paves the way to a clean‐energy future. A photoelectrochemical (PEC) system with a Nb:SrTiO3photoelectrode for oxygen evolution from an aqueous electrolyte and a Pt/C electrode for toluene (TL) hydrogenation to MCH was investigated under UV irradiation. A Nb:SrTiO3single‐crystal electrode and an ionomer/Pt/C membrane‐electrode assembly (MEA) were used as the photoanode and cathode, respectively. A steady‐state current density of 0.12 mA cm−2was observed for the two‐electrode system without any bias voltage for >2 h, and a Faradaic efficiency of 97 % was obtained for MCH production from TL. This is the first demonstration of the production of MCH from TL and water using only light energy. This means that light energy was converted directly into MCH from TL and water without any electricity. The PEC properties of the devices are discussed.