Mutually-dependent kinetics and energetics of photocatalyst/co-catalyst/two-redox liquid junctions

2020 ◽  
Vol 13 (1) ◽  
pp. 162-173 ◽  
Author(s):  
Zhenhua Pan ◽  
Rito Yanagi ◽  
Qian Wang ◽  
Xin Shen ◽  
Qianhong Zhu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Water Interface ◽  
Co Catalyst ◽  
Redox Charge ◽  
Dynamic Interplay ◽  
Redox Charge Transfer

We elucidate the multi-redox charge-transfer kinetics across a photocatalyst/(co-catalyst)/water interface and reveal the dynamic interplay between local energetics and kinetics.

Mechanistic aspects of chain initiation in radical addition reactions induced by metal ions

1980 ◽  
Vol 45 (1) ◽  
pp. 231-237
Author(s):  
Robert Ponec ◽  
Jaroslav Málek
Keyword(s):  
Charge Transfer ◽  
Metal Ions ◽  
Radical Addition ◽  
Addition Reactions ◽  
Oxidation Activity ◽  
Chain Initiation ◽  
Redox Charge ◽  
Redox Charge Transfer

Bersuker's concept of redox charge transfer in catalysis has been adopted to study initiating activity of metal ions in radical addition reactions of model organic addends with alkenes. It was found that the most important factor determining the activity of the metal ions was the magnitude of the redox charge transfer δq. Additionally, the spin-allowedness or spin-forbiddenness of the redox step was essential. Two-valent metal ions with configuration d5-d9 do not exhibit, regardless of the spin-allowedness of the redox step, a significant oxidation activity owing to low values of δq. Three-valent metal ions with configurations d1-d3 are also inactive because of relatively lowest values of δq and spin-forbiddenness of the redox step. A transient position is occupied by the Mn3+ (d4) ion for which the redox step is still spin-forbidden, but the value of δq is high enough to evoke satisfactory oxidation activity. Three-valent ions Fe3+, Ni3+ with configurations d5-d7 as well as four-valent ions Pb4+ and Mn4+ show, according to the magnitude of δq, the highest oxidation activity in chain initiation.

Bio-inspired functionalization and redox charge transfer of graphene oxide sponges for pseudocapacitive electrodes

Carbon ◽  
2015 ◽  
Vol 83 ◽  
pp. 71-78 ◽  
Author(s):  
Jin-Yong Hong ◽  
Xu Yu ◽  
Bo Mee Bak ◽  
Changhyun Pang ◽  
Ho Seok Park
Keyword(s):  
Graphene Oxide ◽  
Charge Transfer ◽  
Redox Charge ◽  
Redox Charge Transfer

Polarizability and nonpolarizability of oil-water interfaces with relevance to a.c. impendance measurements

1991 ◽  
Vol 56 (1) ◽  
pp. 112-129 ◽  
Author(s):  
Takashi Kakiuchi ◽  
Mitsugi Senda
Keyword(s):  
Charge Transfer ◽  
Numerical Calculation ◽  
Supporting Electrolyte ◽  
Water Interface ◽  
Migration Effect ◽  
Ac Current ◽  
Stationary Interface ◽  
Oil Water ◽  
Anion Transfer

We have estimated the degree of polarizability of a polarized oil-water interface used as a working interface and that of the nonpolarizability of a nonpolarized interface used as a reference oil-water interface from the numerical calculation of dc and ac current vs potential behavior at both interfaces. Theoretical equations of dc and ac currents for simultaneous cation and anion transfer of supporting electrolytes have been derived for the planar stationary interface for reversible and quasi-reversible cases. In the derivation, the migration effect and the coupling of the cation and anion transfer have been incorporated. The transfer of ions constituting a supporting electrolyte contributes to the total admittance of the interface even in the region where the interface may be considered as polarized in dc sense, as pointed out first by Samec et al. (J. Electroanal. Chem. 126, 121 (1981)). Moreover, the reference oil-water interface is not ideally reversible, so that the contribution from this interface to the measured admittance cannot be negligible, unless the area of the reference oil-water interface is much larger than that of the working oil-water interface. The effect of non-ideality of the reference oil-water interface on the determination of double layer capacitances and kinetic parameters of charge transfer at the working oil-water interface has been estimated.

Regulating spatial charge transfer over intrinsically ultrathin-carbon-encapsulated photoanodes toward solar water splitting

2019 ◽  
Vol 7 (6) ◽  
pp. 2741-2753 ◽  
Author(s):  
Xiao-Cheng Dai ◽  
Ming-Hui Huang ◽  
Yu-Bing Li ◽  
Tao Li ◽  
Bei-Bei Zhang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Water Splitting ◽  
Co Catalyst ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Spatial Charge

Ultrathin carbon encapsulation, stibnite photosensitization and Co-Pi co-catalyst decoration were synergistically integrated to regulate spatial charge transfer for solar water splitting.

Conductivity of floating monolayers based on BEDO-TTF charge transfer complex at the air-water interface

1996 ◽  
Vol 284-285 ◽  
pp. 508-511 ◽  
Author(s):  
Takayoshi Nakamura ◽  
Heikki Isotalo ◽  
Tomoyuki Akutagawa ◽  
Hiroaki Tachibana ◽  
Reiko Azumi ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Water Interface ◽  
Air Water Interface
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