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논문 기본정보
Catalytic activity of Fe3-xCuxO4 (0@?x@?0.25) nanoparticles for the degradation of Amaranth food dye by heterogeneous electro-Fenton process
논문 개요
| 기관명 | NDSL |
|---|---|
| 저널명 | Applied catalysis. B, Environmental |
| ISSN | 0926-3373,1873-3883 |
| ISBN |
논문저자 및 소속기관 정보
| 저자(한글) | Barros, W.R.P.,Steter, J.R.,Lanza, M.R.V.,Tavares, A.C. |
|---|---|
| 저자(영문) | |
| 소속기관 | |
| 소속기관(영문) | |
| 출판인 | |
| 간행물 번호 | |
| 발행연도 | 2016-01-01 |
| 초록 | This work describes the application of substituted magnetite nanoparticles, Fe 3-x Cu x O 4 (0@?x@?0.25), as heterogeneous catalysts for the electro-Fenton process in alkaline medium (KOH, pH 13.4) using an uncatalyzed gas diffusion electrode based on Printex carbon. The, Fe 3-x Cu x O 4 (0@?x@?0.25) nanoparticles were synthesized by a co-precipitation method and were characterized by neutron activation analysis (NAA), X-ray diffraction (XRD), transmission electron microscopy (TEM), N 2 -physisorption analysis and X-ray photoelectron spectroscopy (XPS). Cu 2+ /Cu + cations were successfully substituted in the octahedral site of Fe 3 O 4 causing changes in the catalytic activity of the NPs. The electrodegradation of amaranth food dye was performed at -1.1V (vs. Ag/AgCl) for 90min under constant flow of O 2 in the GDE. The dye solution samples were analyzed by UV-vis spectrophotometry, high performance liquid chromatography (HPLC) and total organic carbon (TOC). The maximum color removal was 98%, the degradation was 98%, the mineralization was 70% and the specific energy consumption 483.0 kWh kg -1 for Fe 3-x Cu x O 4 with x=0.25. The kinetics of the process was of pseudo-first order. The consumed H 2 O 2 increased with increasing value of x in the spinel of Fe 3-x Cu x O 4 (0@?x@?0.25). No residues of soluble Fe 2+ and Cu 2+ ions were detected at the end of electrolysis. XRD analysis of the Fe 2.75 Cu 0.25 O 4 (limit of the solid solution) confirmed the stability of the NPs after the Fenton test. |
| 원문URL | http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=03553784&target=NART&cn=NART73035825 |
| 첨부파일 |
추가정보
| 과학기술표준분류 | |
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| ICT 기술분류 | |
| DDC 분류 | |
| 주제어 (키워드) | Heterogeneous electro-Fenton,Gas diffusion electrode,Fe lt,SUB gt,3-x lt,/SUB gt,Cu lt,SUB gt,x lt,/SUB gt,O lt,SUB gt,4 lt,/SUB gt,nanoparticles,Alkaline medium |