Photo-Electrochemical Water Splitting Behavior of Directionally Aligned CdSe Quantum Dots on Copper(II) Benzene-1,3,5-Tricarboxylate Metal-Organic Frameworks (MOFs)

2021 ◽  
Vol 21 (3) ◽  
pp. 1623-1635
Author(s):  
Anup Kuchipudi ◽  
S. Suresh Reddy ◽  
S. Vengatesan ◽  
Subhendu K. Panda ◽  
Gosipathala Sreedhar

Herein, a facile synthesis protocol for the development of directional alignment of CdSe quantum dots (QDs) on the surface of Copper benzene-1, 3, 5-tricarboxylate (CuBTC) metal-organic frameworks (MOFs) was proposed. The sensitization of CdSe QDs with MOFs offered enhancement of light-harvesting properties in the visible region of the solar spectrum due to the broad absorption band of CdSe QDs. As a photo-anode, it has generated current density of ˜20 mA/cm2 at 1.70 V (vs. Reversible hydrogen electrode (RHE)) during the photo-electrochemical water splitting in 1 M Na2S electrolyte. The present investigation demonstrates the directional attachment of CdSe QDs on CuBTC is beneficial in facilitating light-harvesting and photo-electrochemical properties of CuBTC MOFs.

2020 ◽  
Vol 8 ◽  
Author(s):  
Wenjuan Han ◽  
Minhan Li ◽  
Yuanyuan Ma ◽  
Jianping Yang

Hydrogen has been considered as a promising alternative energy to replace fossil fuels. Electrochemical water splitting, as a green and renewable method for hydrogen production, has been drawing more and more attention. In order to improve hydrogen production efficiency and lower energy consumption, efficient catalysts are required to drive the hydrogen evolution reaction (HER). Cobalt (Co)-based metal-organic frameworks (MOFs) are porous materials with tunable structure, adjustable pores and large specific surface areas, which has attracted great attention in the field of electrocatalysis. In this review, we focus on the recent progress of Co-based metal-organic frameworks and their derivatives, including their compositions, morphologies, architectures and electrochemical performances. The challenges and development prospects related to Co-based metal-organic frameworks as HER electrocatalysts are also discussed, which might provide some insight in electrochemical water splitting for future development.


2013 ◽  
Vol 135 (3) ◽  
pp. 955-958 ◽  
Author(s):  
Shengye Jin ◽  
Ho-Jin Son ◽  
Omar K. Farha ◽  
Gary P. Wiederrecht ◽  
Joseph T. Hupp

2014 ◽  
Vol 2 (35) ◽  
pp. 7173-7175 ◽  
Author(s):  
Takuo Wakaoka ◽  
Kenji Hirai ◽  
Koji Murayama ◽  
Yoshihiko Takano ◽  
Hiroshi Takagi ◽  
...  

Ultra-small CdSe nanoparticles (∼2 nm) were synthesised in the pores of a metal–organic framework, MIL-101(Al)-NH2, using a stepwise injection-reaction protocol.


2015 ◽  
Vol 727-728 ◽  
pp. 284-287
Author(s):  
Ling Ling Chen

An effective approach was used to disperse CdSe quantum dots (QDs) into epoxy matrix and prepare highly transparent luminescent CdSe–epoxy nanocomposites. Dodecylamine-capped CdSe QDs were obtained through self-assembly of carbon chains of as-synthesized QDs and dodecylamine. It was found that dodecylamine-capped CdSe QDs demonstrate a homogeneous dispersion within epoxy matrix, thus the prepared CdSe–epoxy nanocomposites expressed transparence in the visible region and also light-emitting.


2021 ◽  
Vol 121 ◽  
pp. 111622
Author(s):  
Li Chen ◽  
Limin Zheng ◽  
Fangqi Wang ◽  
Simin Yi ◽  
Donghao Liu ◽  
...  

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