Highly photoactive SnO2 nanostructures engineered by electrochemically active biofilm

Title
Highly photoactive SnO2 nanostructures engineered by electrochemically active biofilm
Author(s)
조무환사지드안자리칸모하마드만숩모드안사리이진태
Keywords
LIGHT PHOTOCHEMICAL ACTIVITY; PHOTOCATALYTIC ACTIVITY; OXYGEN VACANCY; GOLD NANOPARTICLES; OPTICAL-PROPERTIES; BIO-HYDROGEN; PERFORMANCE; ZNO; SURFACE; TIO2
Issue Date
201406
Publisher
ROYAL SOC CHEMISTRY
Citation
NEW JOURNAL OF CHEMISTRY, v.38, no.6, pp.2462 - 2469
Abstract
This paper reports the defect-induced band gap narrowing of pure SnO2 nanostructures (p-SnO2) using an electrochemically active biofilm (EAB). The proposed approach is biogenic, simple and green. The systematic characterization of the modified SnO2 nanostructures (m-SnO2) revealed EAB-mediated defects in the pure SnO2 nanostructures (p-SnO2). The modified SnO2 (m-SnO2) nanostructures in visible light showed the enhanced photocatalytic degradation of p-nitrophenol and methylene blue compared to the p-SnO2 nanostructures. The photoelectrochemical studies, such as the electro-chemical impedance spectroscopy and linear scan voltammetry, also revealed a significant increase in the visible light response of the m-SnO2 compared to the p-SnO2 nanostructures. The enhanced activities of the m-SnO2 in visible light was attributed to the high separation efficiency of the photoinduced electron hole pairs due to surface defects mediated by an EAB, resulting in a band gap narrowing of the m-SnO2 nanostructures. The tuned band gap of the m-SnO2 nanostructures enables the harvesting of visible light to exploit the properties of the metal oxide towards photodegradation, which can in turn be used for environmental remediation applications.
URI
http://hdl.handle.net/YU.REPOSITORY/31993http://dx.doi.org/10.1039/c3nj01488f
ISSN
1144-0546
Appears in Collections:
공과대학 > 화학공학부 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE