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Bicarbonate reduction with semiconductor photocatalysts: study of effect of positive hole scavengers

Published online by Cambridge University Press:  23 August 2018

Hanqing Pan  and
Michael D. Heagy
Hanqing Pan
Affiliation:
Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA
Michael D. Heagy*
Affiliation:
Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, NM 87801, USA
*
Address all correspondence to Michael D. Heagy at [email protected]
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Abstract

Two semiconductors (Cu2O and TiO2) were chosen for the photocatalytic reduction of bicarbonate to formate in order to perform a systematic study on the effect of six different hole (h+) scavengers. The six h+ scavengers selected for the study include glycerol, ethylene glycol, 2-propanol, sodium sulfite, triethanolamine, and ethylenediaminetetraacetic acid. Glycerol proved to be the most efficient h+ scavenger, and TiO2 in glycerol showed the highest quantum efficiency of 5.04 ± 0.3%. This finding bodes well as a sustainable one because glycerol is environmentally benign, a low-cost material, and is derived from plants, as opposed to petroleum sources like 2-propanol or ethylene glycol.

Type
Research Letters
Information
MRS Communications , Volume 8 , Issue 3 , September 2018 , pp. 1173 - 1177
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Copyright
Copyright © Materials Research Society 2018 

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