Pt/Ru-functionalized magnetic spheres for a magnetic-field stimulated methanol and oxygen redox processes: Towards on-demand activation of fuel cells

Wang, Joseph; Musameh, Mustafa; Laocharoensuk, Rawiwan; González-García, Olga; Oni, Joshua; Gervasio, D.

doi:10.1016/j.elecom.2006.04.019

Cited by 26 publications

(16 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Magnetic particles were laterally translocated between conductive and nonconducting domains [83,103], reversibly lifted up from the electrode surface and then redeposited back [81,82] to control the electrode activity, switching it ON and OFF. Magnetic particles and nanowires were functionalized with redox species [81,82], biocatalytic entities [104], redox active DNA molecules [83], electrocatalytic metals [67,87], thus yielding electrochemical or electrocatalytic effects when associated with electrode surfaces. Some of these systems were proposed as magnetoswitchable electrodes in fuel cells [67].…”

Section: Switchable/tunable Biofuel Cell Controlled By Magnetic Signalsmentioning

confidence: 99%

“…Magnetic particles and nanowires were functionalized with redox species [81,82], biocatalytic entities [104], redox active DNA molecules [83], electrocatalytic metals [67,87], thus yielding electrochemical or electrocatalytic effects when associated with electrode surfaces. Some of these systems were proposed as magnetoswitchable electrodes in fuel cells [67].…”

Section: Switchable/tunable Biofuel Cell Controlled By Magnetic Signalsmentioning

confidence: 99%

“…Applications of switchable electrodes in biosensors [66], fuel cells [67] and information processing systems [68] have been suggested. Different physical or/and chemical signals as well as their combinations were used to switch electrochemical properties of the modified interfaces between active and inactive states for specific electrochemical, electrocatalytic and bioelectrocatalytic reactions.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Biofuel Cells with Switchable Power Output

Katz

2010

Electroanalysis

View full text Add to dashboard Cite

Biofuel cells with a switchable power output controlled by external physical or chemical signals were developed. The switchable properties of biofuel cells were achieved by modification of biocatalytic electrodes with signal-responsive materials sensitive to various stimuli triggering reversible transition of the electrode interfaces between electrochemically active and inactive states. Electrical, magnetic and biochemical signals were used as stimuli controlling the electrode activity. Biochemical systems of various complexity mimicking Boolean logic operations AND/OR as well as multienzyme/multilogic gates networks were functionally coupled with the pH-sensitive electrodes in the biofuel cell. This allowed switching ON and OFF the power production in the biofuel cell upon application of many different biochemical signals logically processed by the enzyme systems according to the built-in logic program. The studied switchable biofuel cells controlled by electric, magnetic and biochemical signals exemplify novel bioelectronic devices activated by external signals on-demand. They open a new facet in the multidisciplinary field of bioelectronics and keep a big promise for practical applications, particularly as implantable sustainable energy sources for biomedical applications. The present paper gives a short overview of various switchable/tunable biofuel cells with the power production controlled by external signals.

show abstract

Section: Switchable/tunable Biofuel Cell Controlled By Magnetic Signalsmentioning

confidence: 99%

Section: Switchable/tunable Biofuel Cell Controlled By Magnetic Signalsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Biofuel Cells with Switchable Power Output

Katz

2010

Electroanalysis

View full text Add to dashboard Cite

show abstract

“…In the last decade, different modified electrodes functionalized with signal-responsive molecules [18], polymers [19] or supramolecular complexes [20] were developed to switchon-demand electrochemical properties of the electrode surfaces. Their applications in switchable biosensors [21], fuel cells [22] and electrochemical systems processing information [23] have been suggested. Various physical or/ and chemical signals as well as their combinations were used to switch electrochemical properties of the modified interfaces between active and inactive states for specific electrochemical, electrocatalytic and bioelectrocatalytic reactions.…”

Section: Introductionmentioning

confidence: 99%

Switchable Electrodes: How Can the System Complexity be Scaled up?

Pita

Katz

2009

Electroanalysis

View full text Add to dashboard Cite

Electrodes modified with different signal-responsive materials were designed as switchable electrochemical interfaces controlled by various physical or chemical signals. Electrodes with the electrochemical activity switched ON and OFF by light signals were developed using monolayers or thin films of photoisomerizable compounds. Functionalized magnetic particles associated with the electrode surfaces allowed the switching processes controlled by an external magnetic field. Electrochemical transformations proceeding at modified electrode surfaces upon application of different potentials were able to switch the interfacial resistance between low and high values, thus affecting electrochemical properties of the surfaces. Electrode surfaces functionalized with materials responding to chemical signals allowed the switching processes controlled by chemical or biochemical inputs. Most of the designed switchable electrode interfaces have very limited possibilities for scaling up the complexity of the information processing systems associated with the electrode surfaces. Recent advances in biocomputing and specifically in the design of enzymebased logic systems allow their coupling with switchable electrodes resulting in very sophisticated interfaces for processing biochemical information and its transduction into electronic signals. Future applications of the signalresponsive electrodes integrated with the biocomputing systems in smart biochemically controlled biosensors, biofuel cells and chemical actuators could be envisaged.

show abstract

“…Applications of the switchable -on-demand electrodes in biosensors [10,11], fuel cells [12,13], electrochemical systems processing information [14 -16] and controlled release systems [17] have been suggested. Various physical or/and chemical stimuli as well as their combinations were used to switch electrochemical properties of the modified electrode interfaces between active and inactive states for electrochemical, electrocatalytic and bioelectrocatalytic reactions.…”

Section: Introductionmentioning

confidence: 99%

Modified Electrodes with Switchable Selectivity for Cationic and Anionic Redox Species

et al. 2009

View full text Add to dashboard Cite

The modified electrode functionalized with a mixed-polymer brush composed of poly(2-vinylpyridine) and polyacrylic acid tethered to the surface demonstrated switchable interfacial properties discriminating negatively and positively charged redox species. The switchable electrochemical process was characterized by differential pulse voltammetry and Faradaic impedance spectroscopy. The electrochemical system was discussed as a model of an electrochemical multiplexer with two chemical redox inputs, the pH input operating as the selecting signal and one electronic output signal readable by the impedance spectroscopy in the form of the interfacial resistance. The modified electrode represents a novel component for integration with biocatalytic and biocomputing systems aiming at biochemically and electronically controlled actuators.

show abstract

Pt/Ru-functionalized magnetic spheres for a magnetic-field stimulated methanol and oxygen redox processes: Towards on-demand activation of fuel cells

Cited by 26 publications

References 7 publications

Biofuel Cells with Switchable Power Output

Biofuel Cells with Switchable Power Output

Switchable Electrodes: How Can the System Complexity be Scaled up?

Modified Electrodes with Switchable Selectivity for Cationic and Anionic Redox Species

Contact Info

Product

Resources

About