Abstract
This study photoelectrochemically and photocatalytically examined the effects of constituents in photo/biocatalytic hydrogen production system, being eventually composed of photoanode and cathode, just after that preliminary mixed slurry system had been investigated to see the insights of the hybrid system. Experiments with the mixed slurry system revealed the following four cases; direct interphase electron transfer from photocatalyst to enzyme in the absence of electron relay was a rate-determining step, enzyme was deactivated by irradiated light, physical properties of photocatalysts, obtained by a couple of preparation methods, seldom affected the production rate, and each material needs different reaction conditions such as pH and temperature. These results led the study to the system where the materials were separated into photoanode and cathode and each material has been studied individually and simultaneously to get the possible optimum condition: for the former photoanodic current and photovoltage were measured for each prepared photocatalysts and for the latter change in the amount of evolved hydrogen was checked according to external bias. Then both reaction parts were connected through Nafion membrane and salt bridge to perform light-induced hydrogen production for the hybrid system. No synergistic effect of the system happened with Nafion, but promising result was obtained with salt bridge. Detailed investigations are under way.
| Original language | English |
|---|---|
| Title of host publication | Eco-Materials Processing and Design - Proceedings of the 6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6 |
| Pages | 139-153 |
| Number of pages | 15 |
| Publication status | Published - 2006 Jul 24 |
| Event | 6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6 - Maui, HI, United States Duration: 2005 Sep 11 → 2005 Sep 16 |
Publication series
| Name | Ceramic Transactions |
|---|---|
| Volume | 193 |
| ISSN (Print) | 1042-1122 |
Other
| Other | 6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6 |
|---|---|
| Country | United States |
| City | Maui, HI |
| Period | 05/9/11 → 05/9/16 |
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All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Materials Chemistry
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Effects of constituents in photo/biocatalytic hydrogen production system using experimental design tool. / Joo, Hyunku; Jang, Yongho; Lee, Sangbong; Shul, Yong Gun.
Eco-Materials Processing and Design - Proceedings of the 6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6. 2006. p. 139-153 (Ceramic Transactions; Vol. 193).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Effects of constituents in photo/biocatalytic hydrogen production system using experimental design tool
AU - Joo, Hyunku
AU - Jang, Yongho
AU - Lee, Sangbong
AU - Shul, Yong Gun
PY - 2006/7/24
Y1 - 2006/7/24
N2 - This study photoelectrochemically and photocatalytically examined the effects of constituents in photo/biocatalytic hydrogen production system, being eventually composed of photoanode and cathode, just after that preliminary mixed slurry system had been investigated to see the insights of the hybrid system. Experiments with the mixed slurry system revealed the following four cases; direct interphase electron transfer from photocatalyst to enzyme in the absence of electron relay was a rate-determining step, enzyme was deactivated by irradiated light, physical properties of photocatalysts, obtained by a couple of preparation methods, seldom affected the production rate, and each material needs different reaction conditions such as pH and temperature. These results led the study to the system where the materials were separated into photoanode and cathode and each material has been studied individually and simultaneously to get the possible optimum condition: for the former photoanodic current and photovoltage were measured for each prepared photocatalysts and for the latter change in the amount of evolved hydrogen was checked according to external bias. Then both reaction parts were connected through Nafion membrane and salt bridge to perform light-induced hydrogen production for the hybrid system. No synergistic effect of the system happened with Nafion, but promising result was obtained with salt bridge. Detailed investigations are under way.
AB - This study photoelectrochemically and photocatalytically examined the effects of constituents in photo/biocatalytic hydrogen production system, being eventually composed of photoanode and cathode, just after that preliminary mixed slurry system had been investigated to see the insights of the hybrid system. Experiments with the mixed slurry system revealed the following four cases; direct interphase electron transfer from photocatalyst to enzyme in the absence of electron relay was a rate-determining step, enzyme was deactivated by irradiated light, physical properties of photocatalysts, obtained by a couple of preparation methods, seldom affected the production rate, and each material needs different reaction conditions such as pH and temperature. These results led the study to the system where the materials were separated into photoanode and cathode and each material has been studied individually and simultaneously to get the possible optimum condition: for the former photoanodic current and photovoltage were measured for each prepared photocatalysts and for the latter change in the amount of evolved hydrogen was checked according to external bias. Then both reaction parts were connected through Nafion membrane and salt bridge to perform light-induced hydrogen production for the hybrid system. No synergistic effect of the system happened with Nafion, but promising result was obtained with salt bridge. Detailed investigations are under way.
UR - http://www.scopus.com/inward/record.url?scp=33746063694&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33746063694&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33746063694
SN - 0470080507
SN - 9780470080504
T3 - Ceramic Transactions
SP - 139
EP - 153
BT - Eco-Materials Processing and Design - Proceedings of the 6th Pacific Rim Conference on Ceramic and Glass Technology, PacRim6
ER -