Title :
Linbo3 - A new material for artificial photosynthesis
Author :
Stock, Michiel ; Dunn, S.
Author_Institution :
Nanotechnol. Centre, Cranfield Univ., Cranfield, UK
fDate :
9/1/2011 12:00:00 AM
Abstract :
The solid-gas phase photo-assisted reduction of carbon dioxide (artificial photosynthesis) was performed using ferroelectric lithium niobate and titanium dioxide. Illumination with a high-pressure mercury lamp and visible sunlight showed that lithium niobate achieved unexpectedly high conversion of CO2 to products despite the low levels of band-gap light available. The high reaction efficiency of lithium niobate is explained by its strong remnant polarization (70 μC/cm2), allowing a longer lifetime of photo-induced carriers as well as an alternative reaction pathway.
Keywords :
carbon compounds; carrier lifetime; dielectric polarisation; ferroelectric materials; lithium compounds; photosynthesis; reaction kinetics theory; reduction (chemical); CO2; LiNbO3; TiO2; alternative reaction pathway; artificial photosynthesis; band-gap light; carbon dioxide; ferroelectric lithium niobate; high-pressure mercury lamp; illumination; photoinduced carrier lifetime; reaction efficiency; remnant polarization; solid-gas phase photoassisted reduction; titanium dioxide; visible sunlight; Charge carrier processes; Lithium niobate; Materials; Oxidation; Photonic band gap; Powders; Radiation effects; Carbon Dioxide; Formaldehyde; Formic Acids; Green Chemistry Technology; Microscopy, Electron, Scanning; Niobium; Oxides; Photosynthesis; Sunlight; Titanium; Ultraviolet Rays;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2011.2042
