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Reduced graphene oxide anodes for potential application in algae biophotovoltaic platforms.

Ng FL, Jaafar MM, Phang SM, Chan Z, Salleh NA, Azmi SZ, Yunus K, Fisher AC, Periasamy V - Sci Rep (2014)

Bottom Line: However, other materials such as reduced graphene oxide (RGO) could provide higher efficiency due to their intrinsic electrical properties and biological compatibility.In this work, the performance of algae biofilms grown on RGO and ITO anodes were measured and discussed.Results indicate improved peak power of 0.1481 mWm(-2) using the RGO electrode and an increase in efficiency of 119%, illustrating the potential of RGO as an anode material for applications in biofilm derived devices and systems.

View Article: PubMed Central - PubMed

Affiliation: 1] Institute of Ocean and Earth Sciences (IOES), University of Malaya, 50603 Kuala Lumpur [2] Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.

ABSTRACT
The search for renewable energy sources has become challenging in the current era, as conventional fuel sources are of finite origins. Recent research interest has focused on various biophotovoltaic (BPV) platforms utilizing algae, which are then used to harvest solar energy and generate electrical power. The majority of BPV platforms incorporate indium tin oxide (ITO) anodes for the purpose of charge transfer due to its inherent optical and electrical properties. However, other materials such as reduced graphene oxide (RGO) could provide higher efficiency due to their intrinsic electrical properties and biological compatibility. In this work, the performance of algae biofilms grown on RGO and ITO anodes were measured and discussed. Results indicate improved peak power of 0.1481 mWm(-2) using the RGO electrode and an increase in efficiency of 119%, illustrating the potential of RGO as an anode material for applications in biofilm derived devices and systems.

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Comparison of potential across resistor for the (a) light cycles and (b) dark cycles.
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f5: Comparison of potential across resistor for the (a) light cycles and (b) dark cycles.

Mentions: The across the terminals in the RGO anode based BPV also demonstrated a higher value (510.70 ± 0.01 mV) compared to the ITO based anode (238.700 ± 0.002 mV) at open circuit potential when exposed to light. These were observed across the resistors as seen in Fig. 5. The RGO based electrode shows a significant increase of potential for all resistor values compared to ITO.


Reduced graphene oxide anodes for potential application in algae biophotovoltaic platforms.

Ng FL, Jaafar MM, Phang SM, Chan Z, Salleh NA, Azmi SZ, Yunus K, Fisher AC, Periasamy V - Sci Rep (2014)

Comparison of potential across resistor for the (a) light cycles and (b) dark cycles.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4273602&req=5

f5: Comparison of potential across resistor for the (a) light cycles and (b) dark cycles.
Mentions: The across the terminals in the RGO anode based BPV also demonstrated a higher value (510.70 ± 0.01 mV) compared to the ITO based anode (238.700 ± 0.002 mV) at open circuit potential when exposed to light. These were observed across the resistors as seen in Fig. 5. The RGO based electrode shows a significant increase of potential for all resistor values compared to ITO.

Bottom Line: However, other materials such as reduced graphene oxide (RGO) could provide higher efficiency due to their intrinsic electrical properties and biological compatibility.In this work, the performance of algae biofilms grown on RGO and ITO anodes were measured and discussed.Results indicate improved peak power of 0.1481 mWm(-2) using the RGO electrode and an increase in efficiency of 119%, illustrating the potential of RGO as an anode material for applications in biofilm derived devices and systems.

View Article: PubMed Central - PubMed

Affiliation: 1] Institute of Ocean and Earth Sciences (IOES), University of Malaya, 50603 Kuala Lumpur [2] Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.

ABSTRACT
The search for renewable energy sources has become challenging in the current era, as conventional fuel sources are of finite origins. Recent research interest has focused on various biophotovoltaic (BPV) platforms utilizing algae, which are then used to harvest solar energy and generate electrical power. The majority of BPV platforms incorporate indium tin oxide (ITO) anodes for the purpose of charge transfer due to its inherent optical and electrical properties. However, other materials such as reduced graphene oxide (RGO) could provide higher efficiency due to their intrinsic electrical properties and biological compatibility. In this work, the performance of algae biofilms grown on RGO and ITO anodes were measured and discussed. Results indicate improved peak power of 0.1481 mWm(-2) using the RGO electrode and an increase in efficiency of 119%, illustrating the potential of RGO as an anode material for applications in biofilm derived devices and systems.

Show MeSH