Vitamin Derived Nitrogen Doped Carbon Nanotubes for Efficient Oxygen Reduction Reaction and Arsenic Removal from Contaminated Water

被引：6

作者：

Sridhar, Vadahanambi ^{[1
]}

Jung, Kwang Hyo ^{[2
]}

Park, Hyun ^{[1
,2
]}

机构：

[1] Pusan Natl Univ, Global Core Res Ctr Ships & Offshore Plants GCRC, Busan 46241, South Korea

[2] Pusan Natl Univ, Dept Naval Architecture & Ocean Engn, Busan 46241, South Korea

来源：

MATERIALS | 2020年 / 13卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

Fe-N-C; ORR; microwave synthesis; vitamin; arsenic removal; MICROWAVE SYNTHESIS; GRAPHENE; NANOSHEETS; ELECTROCATALYSTS; EVOLUTION; CATALYSTS;

D O I：

10.3390/ma13071686

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nitrogen doped carbon nanotubes (NCNT) that were prepared by simple microwave pyrolysis of Niacin (Vitamin B-3) 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-1/2) 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.

引用

页数：13

共 43 条

[21] Fe-N-C oxygen reduction catalysts supported on vertically aligned carbon nanotubes [J].