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학술지 V-Shaped Tin Oxide Nanostructures Featuring a Broad Photocurrent Signal: An Effective Visible-Light-Driven Photocatalyst
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저자
Geng Wang, Wu Lu, Jinghong Li, 최지영, 정연석, 최성율, 박종봉, 유민기, 이광열
발행일
200612
출처
Small, v.2 no.12, pp.1436-1439
ISSN
1613-6810
출판사
Wiley-Blackwell
DOI
https://dx.doi.org/10.1002/smll.200600216
협약과제
05IF1100, 기가비트급 유기 메모리용 유기 신소재 개발, 최성율
초록
The growth-direction-selective synthesis of soluble tin oxide (SnO 2) nanorods and bipods with small diameters based on the oleylamine-assited hydrolysis of tin alkoxide in the presence of oleic acid was reported. Measurements of the photocurrent action spectras were performed in a home-built PEC (photochemical properties), in order to examine the PEC properties of SnO2 nanomaterials. Mott-Schottky (MS) measurements were performed in darkness by using the impedance technique, to understand the difference in electronic properties. The SnO2) biped electrode showed a large negative shift of the conduction band. The broad photocurrent feature of SnO2) bipods suggested light conversion efficiency due to the effective utilization of visible light. The photocurrent action spectra, Mott-Schottky plots, and the PL emission spectra revealed that every SnO 2 electrode had unique photoelectrochemical properties.
KSP 제안 키워드
Action spectra, Conversion efficiency(C.E.), Effective utilization, Electronic properties, Impedance technique, Light conversion efficiency, Mott-Schottky plots, Negative shift, Oleic acid, Oxide nanostructures, PL emission