Oxygen Reduction Reaction in Layer-by-Layer Fabricated Cobalt Porphyrin-Based Nanostructures
Oxygen Reduction Reaction in Layer-by-Layer Fabricated Cobalt Porphyrin-Based Nanostructures
复制标题
DOI：
10.4028/www.scientific.net/msf.1025.3
复制
发表时间：
2021-03
期刊：
影响因子：
--
通讯作者：
Banjongsak Lamlua;T. Ohyama;Y. Nagao
中科院分区：
文献类型：
--
作者：
Banjongsak Lamlua;T. Ohyama;Y. Nagao
在3-氨丙基甲氧基硅烷修饰的氧化铟锡（ITO）表面制备了金属卟啉纳米结构。采用紫外-可见光谱和循环伏安法研究了聚合物电解质膜燃料电池（PEMFC）阴极电化学催化剂在氧还原反应中的电子吸收光谱和催化活性。以5，10，15，20-四-（4-氨基苯基）卟啉-Co（II）为结构单元，1，4-苯二异氰酸酯为连接基，甲苯/氯仿混合溶液为基础的逐层生长过程可以通过脲键生成最多30层的5，10，15，20-四-（4-氨基苯基）卟啉-Co（II）。真空热退火工艺提高了催化剂的氧还原活性。
Metalloporphyrin-based nanostructures were fabricated on 3-aminopropylmethoxysilane-modified indium tin oxide (ITO) surface. UV-visible spectroscopy and cyclic voltammetry are used for investigating electronic absorption spectra and catalytic activity in oxygen reduction reactions as alternative cathode electrochemical catalysts for polymer electrolyte membrane fuel cells (PEMFCs). Using of 5,10,15,20-tetrakis-(4-amiophenyl)-porphyrin-Co (II) as a building block and 1,4-phenylene diisocyanate as a linker, the mixed toluene/chloroform solution-based layer-by-layer process can produce linear growth of 5,10,15,20-tetrakis-(4-amiophenyl)-porphyrin-Co (II) up to 30 layers through urea bonds. The vacuum thermal annealing process demonstrated the improvement of catalytic activity in oxygen reduction reaction.