Seminar

Seminar

Photosynthesis of Value-added Chemicals from Carbon Dioxide and Water Using Oxide Semiconductors

  • POSTED DATE : 2017-12-06
  • WRITER : 관리자
  • HIT : 3782
  • DATE : 2017-12-14
  • PLACE : 화학관 330102호

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제  목 : Photosynthesis of Value-added Chemicals from Carbon Dioxide and Water Using Oxide Semiconductors


연  사 : 박현웅 교수님(경북대학교)

           

일  시 : 2017년 12월 14일(목) 오후 4시 30분


장  소 : 화학관 1층 대강의실 (330102호실)

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Photosynthesis of Value-added Chemicals from Carbon Dioxide and Water Using Oxide Semiconductors
         

                                                                                                                                                                                                Hyunwoong Park
School of Energy Engineering, Kyungpook National University, Daegu 41566, Korea

E-mail: hwp@knu.ac.kr



As the costs of carbon-footprinted fuels change continuously and atmospheric carbon dioxide
concentration increases, solar fuels are receiving growing attention as alternative clean
energy carriers. These fuels include molecular hydrogen and hydrogen peroxide produced
from water, and hydrocarbons converted from carbon dioxide. For high efficiency solar fuel
production, not only light absorbers (oxide semiconductors, Si, inorganic complexes, etc)
should absorb most sunlight, but also charge separation and interfacial charge transfers need
to occur efficiently. Recently, there is renewed interest in the photocatalytic and
photoelectrochemical conversion of CO2 into value-added chemicals using various
semiconductor particles and electrodes. Common CO2 reduction products are C1 chemicals
(CO, HCOOH, CH3OH, and CH4) in aqueous media, while the production of C2-C4
hydrocarbons (e.g., C2H6 and C3H8) has also been reported. A number of solar-active
materials have been reported, but they still suffer from low selectivity, poor energy efficiency,
and instability, while failing to drive simultaneous water oxidation. This talk presents our
recent studies on the solar CO2 conversion to value-added chemicals while using water as an
electron donor in various photo-systems.