Sridhar Vadahanambi, Jung Kwang Hyo, Park Hyun
Global Core Research Centre for Ships and Offshore Plants (GCRC-SOP), Pusan National University, Busan 46241, Korea.
Department of Naval Architecture and Ocean Engineering, Pusan National University, Busan 46241, Korea.
Materials (Basel). 2020 Apr 4;13(7):1686. doi: 10.3390/ma13071686.
Nitrogen doped carbon nanotubes (NCNT) that were prepared by simple microwave pyrolysis of Niacin (Vitamin B) as noble metal free electrocatalyst for oxygen reduction reaction (ORR) is reported. Our newly developed technique has the distinct features of sustainable and widely available niacin as a bi-functional source of both carbon and nitrogen, whereas the iron catalyst is cheap and the fourth most common element in the Earth's crust. The results of the electrochemical tests show that our newly developed iron impregnated NCNT anchored on reduced graphene substrate (Fe@NCNT-rGO) catalyst exhibit: a positive half-wave potential (E) of 0.75 V vs. RHE (reversible hydrogen electrode), four-electron pathway, and better methanol tolerance when compared to commercial 20% Pt/C. When applied as adsorbent for arsenic removal, our newly discovered NCNT-Fe illustrate the efficient and effective removal of arsenic across a wide range of pH values.
据报道，通过对烟酸（维生素B）进行简单的微波热解制备了氮掺杂碳纳米管（NCNT），作为用于氧还原反应（ORR）的无贵金属电催化剂。我们新开发的技术具有显著特点，即可持续且广泛可得的烟酸作为碳和氮的双功能来源，而铁催化剂价格便宜且是地壳中第四常见的元素。电化学测试结果表明，我们新开发的负载在还原氧化石墨烯基底上的铁浸渍NCNT（Fe@NCNT-rGO）催化剂表现出：相对于可逆氢电极（RHE）的正半波电位（E）为0.75 V，四电子途径，并且与商业20% Pt/C相比具有更好的甲醇耐受性。当用作砷去除吸附剂时，我们新发现的NCNT-Fe表明在广泛的pH值范围内能高效有效地去除砷。
