| 학회 | 한국화학공학회 |
| 학술대회 | 2016년 가을 (10/19 ~ 10/21, 대전컨벤션센터) |
| 권호 | 22권 2호, p.2005 |
| 발표분야 | 에너지 |
| 제목 | Accuracy improvement of X-ray photoelectron spectroscopy performance for reliability of PtFe alloy nanohybrid data |
| 초록 | Recently, bimetallic PtFe nanoparticles were applied as the counter electrode for dye sensitized solar cell [Omelianovych et al., Electrochimica Acta 211 (2016) 842]. As the result, Pt0.75Fe0.25 alloy CE exhibited the highest electrochemical catalytic activity among CEs, resulting 8.94% efficiency which is higher than that of DSC employing Pt electrode. The optimization was conducted through XPS experimental data. In this study, we present the great impact of the Ar+ sputtering prior to XPS- measurements on the chemical state of PtFe alloy. This research provides ways to obtain reliable data using XPS analysis for alloys system consist of nanosize particles. The pre-treatment (Ar+ cleaning) of the Pt0.75Fe0.25 resulted in partial reduction of Fe-oxides to a bulk metal state and lower oxidation state. Through investigation of the processing parameters of Ar+ plasma treatment in range of 1 to 3 keV as an ion beam energy and 1.5-0.5 µA as ion beam current, we found that pre-treatment under 1 keV – ion beam energy and with ion beam current of 0.5 µA was the best condition for the least changes in the alloy structure. |
| 저자 | Oleksii Omelianovych, 최호석, 라리나, 다오반 |
| 소속 | 충남대 |
| 키워드 | 에너지 전환; 에너지 소재 |
| 원문파일 | 초록 보기 |
