title: Inhibition of CO poisoning on Pt catalyst coupled with the reduction of toxic hexavalent chromium in a dual-functional fuel cell.
abstract: We propose a method to enhance the fuel cell efficiency with the simultaneous removal of toxic heavy metal ions. Carbon monoxide (CO), an intermediate of methanol oxidation that is primarily responsible for Pt catalyst deactivation, can be used as an in-situ reducing agent for hexavalent chromium (Cr (VI)) with reactivating the CO-poisoned Pt catalyst. Using electro-oxidation measurements, the oxidation of adsorbed CO molecules coupled with the concurrent conversion of Cr (VI) to Cr (III) was confirmed. This concept was also successfully applied to a methanol fuel cell to enhance its performance efficiency and to remove toxic Cr (VI) at the same time.
authors.affiliation: 1] Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea [2] School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Republic of Korea.
authors.forename: Dong Young
authors.initials: DY
authors.lastname: Chung
authors.affiliation: School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Republic of Korea.
authors.forename: Hyoung-il
authors.initials: HI
authors.lastname: Kim
authors.affiliation: Fuel cell Research Center, Korea Institute of Science and Technology, 39-1 Hawolgok-dong, Seoul 136-791, Republic of Korea.
authors.forename: Young-Hoon
authors.initials: YH
authors.lastname: Chung
authors.affiliation: 1] Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea [2] School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Republic of Korea.
authors.forename: Myeong Jae
authors.initials: MJ
authors.lastname: Lee
authors.affiliation: Fuel cell Research Center, Korea Institute of Science and Technology, 39-1 Hawolgok-dong, Seoul 136-791, Republic of Korea.
authors.forename: Sung Jong
authors.initials: SJ
authors.lastname: Yoo
authors.affiliation: School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Republic of Korea.
authors.forename: Alok D
authors.initials: AD
authors.lastname: Bokare
authors.affiliation: School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Republic of Korea.
authors.forename: Wonyong
authors.initials: W
authors.lastname: Choi
authors.affiliation: 1] Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 151-742, Republic of Korea [2] School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Republic of Korea.
authors.forename: Yung-Eun
authors.initials: YE
authors.lastname: Sung