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Journal of Chemical Technology and Applications | Volume 2
Annual Spring Conference and Expo on
April 04-05, 2018 | Miami, USA
Chemical Engineering: From
Materials Engineering to Nanotechnology
Su-Il In
Daegu Gyeongbuk Institute of Science and Technology, South Korea
Materials science & engineering for carbon dioxide (CO
2
) utilization
P
hotocatalytic reduction of CO
2
to fuel offers an exciting
opportunity for helping to solve current energy and global
warming problems. Although a number of solar active catalysts
have been reported, most of them suffer from low product
yield, instability, and low quantum efficiency. Therefore, the
design and fabrication of highly active photocatalysts remains
an unmet challenge. In the current work we utilize hydrogen-
doped, blue-colored reduced titania for photocatalytic
conversion of CO
2
into methane (CH
4
). The photocatalyst
is obtained by exposure of TiO
2
to NaBH
4
at 350 °C for 0.5 h.
Sensitized with Pt nanoparticles, the material promotes solar
spectrum photoconversion of CO
2
to CH
4
with an apparent
quantum yield of 12.40% and a time normalized CH
4
generation
rate of 80.35 μmol g
−1
h
−1
, which to the best of our knowledge
is a record for photocatalytic-based CO
2
reduction. The material
appears intrinsically stable, with no loss in sample performance
over five 6 h cycles, with the sample heated in vacuum after
each cycle.
Speaker Biography
Professor SU-IL IN has been working at DGIST since 2012. He served the Dean of
External and International Affairs at DGIST (Daegu Gyeongbuk Institute of Science and
Technology) in 2016~2017. He received his Ph.D. in Chemistry from the University of
Cambridge in 2008. He then became a postdoctoral research associate at the Technical
University of Denmark in 2010. He also joined the Department of Chemistry at
Pennsylvania State University as a postdoctoral fellow before joining DGIST. Professor
In’s current researches include synthesis and analysis of functional nano (bio)-materials
for environmentally friendly renewable energy such as photovoltaic, heterogeneous
catalysis and biocatalysts. A central goal of this work is relating surface structure/
properties, size and composition to the catalytic activity and microbial fuel cell (MFC).
e:
insuil@dgist.ac.kr