scholarly journals Construction of C/MoS2 nanocomposite for highly efficient electrocatalytic NRR

2021 ◽  
Vol 245 ◽  
pp. 03022
Author(s):  
Yang Guohua ◽  
Li Nan
Keyword(s):  
Charge Transfer ◽  
Reaction Kinetics ◽  
Hydrothermal Method ◽  
Hydrogen Evolution Reaction ◽  
Transfer Rate ◽  
Reduction Reaction ◽  
Green Process ◽  
One Pot ◽  
Faradaic Efficiency ◽  
Charge Transfer Rate

Electrochemical N2 reduction reaction (NRR) has been considered as a promising and green process to replace conventional Haber−Bosch process. However, the presence of sluggish reaction kinetics and competitive hydrogen evolution reaction (HER) can result in poor activity and unsatisfactory selectivity. Here, we proposed C/MoS2 catalysts by a facile ‘one-pot’ hydrothermal method. Benefiting from porous nanosphere structure, it shows outstanding charge transfer rate, which accelerates NRR kinetics. As a result, C/MoS2 exhibited a conspicuously improved NRR performance with a high Faradaic efficiency (FE) of 8.2% at −0.7 V. In addition, this electrocatalyst showed marvelous stability.

Connecting charge transfer kinetics to device parameters of a narrow-bandgap polymer-based solar cell

2016 ◽  
Vol 18 (38) ◽  
pp. 26550-26561 ◽  
Author(s):  
Jongwoo Song ◽  
Younah Lee ◽  
Boa Jin ◽  
Jongdeok An ◽  
Hyunmin Park ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solar Cell ◽  
Kinetic Model ◽  
Rate Constant ◽  
Transfer Rate ◽  
Polymer Solar Cell ◽  
Transfer Rate Constant ◽  
Charge Transfer Rate ◽  
Narrow Bandgap

The spectroscopic charge transfer rate constant was compared with the PV properties of a polymer solar cell using a kinetic model.

scholarly journals Influence of the Potential on the Charge-Transfer Rate Constant of Photooxidation of Water over α-Fe2O3 and Ti-Doped α-Fe2O3

2013 ◽  
Vol 29 (09) ◽  
pp. 1954-1960
Author(s):  
SHANGGUAN Peng-Peng ◽  
◽  
TONG Shao-Ping ◽  
LI Hai-Li ◽  
LENG Wen-Hua ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Rate Constant ◽  
Transfer Rate ◽  
Transfer Rate Constant ◽  
Charge Transfer Rate

NiO nanowires as hole-transfer layer for drastic enhancement of CdSe-sensitized photocathodes

2019 ◽  
Vol 43 (10) ◽  
pp. 4075-4081
Author(s):  
Shuang Zhao ◽  
Yuming Dong ◽  
Guangli Wang ◽  
Pingping Jiang ◽  
Yuxia Zhang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Transfer Rate ◽  
Capture Efficiency ◽  
Transfer Layer ◽  
Hole Transfer ◽  
Charge Transfer Rate ◽  
Light Capture

Grass-like NiO nanowires as a hole-transfer layer to improve light capture efficiency and charge transfer rate for a CdSe-sensitized photocathode.

Charge Transfer Rate in Collisions of H+Ions with Si Atoms

1996 ◽  
Vol 473 (2) ◽  
pp. 1114-1117 ◽  
Author(s):  
M. Kimura ◽  
A. B. Sannigrahi ◽  
J. P. Gu ◽  
G. Hirsch ◽  
R. J. Buenker ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Transfer Rate ◽  
Charge Transfer Rate

Photosynthetic Reaction Center Immobilization through Carboxylic Acid Terminated\Cytochrome C Linker for Applications in Photoprotein-based Bio-photovoltaic Devices

2013 ◽  
Vol 1572 ◽  
Author(s):  
Houman Yaghoubi ◽  
Daniel Jun ◽  
J. Thomas Beatty ◽  
Arash Takshi
Keyword(s):  
Charge Transfer ◽  
Carboxylic Acid ◽  
Transfer Rate ◽  
Internal Quantum Efficiency ◽  
Direct Electron Transfer ◽  
Cysteine Residues ◽  
Photovoltaic Devices ◽  
Au Electrode ◽  
Charge Transfer Rate ◽  
Linker Molecules

ABSTRACTBacterial photosynthetic reaction centers (RCs) are promising materials for solar energy harvesting, due to their high internal quantum efficiency. However, applications of RCs in bio-photovoltaic devices so far show relatively low external power conversion efficiency, mainly due to low efficiency of the charge transfer to the electrode. Preferential orientation of RCs on an electrode’s surface can enhance the charge transfer rate to some extent. Yet, the results of direct coupling of RCs to an Au electrode, through cysteine residues from the H-subunit, revealed that direct electron transfer is not efficient. This work focuses on a different approach to achieve high charge transfer rate between an Au electrode and RC protein complexes by employing cytochrome c (Cyt c)\carboxylic acid-terminated linker molecules. This approach preferentially orients RCs with the primary donor site to the electrode. Furthermore, Cyt c can be considered as a conductive linker, while the charge transfer mechanism through carboxylic acid-terminated linker molecules is dominated by tunneling. The photochronoamperometric results for a two electrode cell setup indicated a 156 nA.cm-2 cathodic photocurrent density; the photocurrent was measured in an electrochemical cell with ubiquinone-10 (Q2) in the electrolyte. Negligible photocurrents were observed in the case of coupled RCs to the Au via cysteine residues on H-subunit, with only Cyt c in the electrolyte. These findings contribute to the design of highly efficient bio-photovoltaic devices.

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