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논문 기본정보
Accelerated self-cleaning by Cu promoted semiconductor binary-oxides under low intensity sunlight irradiation
논문 개요
| 기관명 | NDSL |
|---|---|
| 저널명 | Applied catalysis. B, Environmental |
| ISSN | 0926-3373,1873-3883 |
| ISBN |
논문저자 및 소속기관 정보
| 저자(한글) | Rtimi, S.,Pulgarin, C.,Sanjines, R.,Kiwi, J. |
|---|---|
| 저자(영문) | |
| 소속기관 | |
| 소속기관(영문) | |
| 출판인 | |
| 간행물 번호 | |
| 발행연도 | 2016-01-01 |
| 초록 | Uniform adhesive TiO 2 -ZrO 2 films co-sputtered on polyester (PES) under low intensity sunlight irradiation discolored methylene blue (MB) within 120min. The discoloration kinetics was seen to be accelerated by a factor four by TiO 2 -ZrO 2 -Cu containing ~0.01% Cu, as determined by X-ray fluorescence (XRF). TiO 2 -ZrO 2 -Cu also increased also accelerated by a factor the discoloration of MB compared to TiO 2 /Cu(PES). MB discoloration was also monitored under visible light in the solar cavity by using a 400nm cutoff filter. Photocatalyst surfaces were characterized by spectroscopic methods showing the film optical absorption and by X-ray photoelectron spectroscopy (XPS), the surface atomic percentage concentration up to 120nm (~600 layers). The band-gaps of TiO 2 -ZrO 2 and TiO 2 -ZrO 2 -Cu were estimated for films co-sputtered for different times. By Fourier transform attenuated infrared spectroscopy (ATR-FTIR), the systematic shift of the predominating nu; s (CH 2 ) vibration-rotational MB bands was monitored up to complete MB discoloration under low intensity solar simulated light. Evidence is presented for the OH? generation by TiO 2 -ZrO 2 -Cu participating in the self-cleaning mechanism. The photo-induced interfacial charge transfer (IFCT) on the TiO 2 -ZrO 2 -Cu is discussed in terms of the electronic band positions of the binary oxides and Cu intra-gap states. This study presents the first evidence for a Cu-promoted composed of two binary oxide semiconductors accelerating the self-cleaning performance. |
| 원문URL | http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=03553784&target=NART&cn=NART73035870 |
| 첨부파일 |
추가정보
| 과학기술표준분류 | |
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| ICT 기술분류 | |
| DDC 분류 | |
| 주제어 (키워드) | Interfacial charge transfer mechanism (IFCT),TiO lt,SUB gt,2 lt,/SUB gt,-ZrO lt,SUB gt,2 lt,/SUB gt,binary oxides,Self-cleaning photocatalysis,Cu intra-gap states,Band-gap of various TiO lt,SUB gt,2 lt,/SUB gt,-ZrO lt,SUB gt,2 lt,/SUB gt,-Cu |