State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied, Chemistry, Chinese Academy of Sciences, Renming Street 5625, Changchun, Jilin 130022, PR China.
Talanta. 2010 Apr 15;81(1-2):444-8. doi: 10.1016/j.talanta.2009.12.022. Epub 2009 Dec 21.
In this paper, we synthesized a unique cathode catalyst Co/Fe/N/CNTs with high performance oxygen reduction. Through the pi-stacking force, the cobalt porphyrins (CoTMPP) and iron phthanlocyanine (FePc) were deposited to the carbon nanotubes (CNTs) sidewall. The CoTMPP/FePc functionalized CNTs were used as the precursor to prepare the Co/Fe/N/CNTs based oxygen reduction nanocatalyst through high-temperature pyrolysis. The as-prepared catalyst exhibited higher electrocatalytic activity for the reduction of dioxygen than that of the Co/Fe/N/graphite and commercial Pt/C. The high electrocatalytic activity and good stability for dioxygen reduction made the Co/Fe/N/CNT as a potential candidate for the efficient cathode material in microbial fuel cells (MFCs). The maximum power of the MFC using the Co/Fe/N/CNT as cathode catalyst is 751 mW m(-2), which was 1.5 times larger than the MFC with the commercial Pt/C catalyst under the same condition. Such an approach is useful for the improvement of the cathode performance and to provide the basis for the development of the efficient MFC cathodes.
本文合成了一种独特的高性能氧还原阴极催化剂 Co/Fe/N/CNTs。通过π-堆积力，将钴卟啉（CoTMPP）和铁酞菁（FePc）沉积到碳纳米管（CNTs）的侧壁上。将 CoTMPP/FePc 功能化的 CNTs 用作前驱体，通过高温热解制备 Co/Fe/N/CNTs 基氧还原纳米催化剂。所制备的催化剂对氧气还原的电催化活性高于 Co/Fe/N/石墨和商业 Pt/C。Co/Fe/N/CNT 对氧气还原具有高电催化活性和良好的稳定性，使其成为微生物燃料电池（MFCs）中高效阴极材料的潜在候选材料。以 Co/Fe/N/CNT 作为阴极催化剂的 MFC 的最大功率为 751 mW m(-2)，在相同条件下比使用商业 Pt/C 催化剂的 MFC 大 1.5 倍。这种方法有助于提高阴极性能，并为高效 MFC 阴极的发展提供基础。
