Band gap narrowing of titanium dioxide (TiO2) nanocrystals by electrochemically active biofilms and their visible light activity

Title
Band gap narrowing of titanium dioxide (TiO2) nanocrystals by electrochemically active biofilms and their visible light activity
Author(s)
조무환이진태칸모하마드만숩샤피어칼라틸사지드안자리
Keywords
ELECTROACTIVE BIOFILMS; PHOTOCATALYTIC ACTIVITY; NANOPARTICLES; ABSORPTION; NANOCOMPOSITES; NANOMATERIALS
Issue Date
201307
Publisher
ROYAL SOC CHEMISTRY
Citation
NANOSCALE, v.5, no.14, pp.6323 - 6326
Abstract
We report a simple biogenic-route to narrow the band gap of TiO2 nanocrystals for visible light application by offering a greener method. When an electrochemically active biofilm (EAB) was challenged with a solution of Degussa-TiO2 using sodium acetate as the electron donor, greyish blue-colored TiO2 nanocrystals were obtained. A band gap study showed that the band gap of the modified TiO2 nanocrystals was significantly reduced (E-g = 2.85 eV) compared to the unmodified white Degussa TiO2 (E-g = 3.10 eV).
URI
http://hdl.handle.net/YU.REPOSITORY/29411http://dx.doi.org/10.1039/c3nr01280h
ISSN
2040-3364
Appears in Collections:
공과대학 > 화학공학부 > Articles
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