scholarly journals [FeFe] Hydrogenase based Prototype Photosensitizer-Catalyst Dyad for Hydrogen Generation under Visible Light

2021 ◽  
Author(s):  
Philipp Buday ◽  
Chizuru Kasahara ◽  
Elisabeth Hofmeister ◽  
Daniel Kowalczyk ◽  
Michael K. Farh ◽  
...  
Keyword(s):  
Visible Light ◽  
Precious Metal ◽  
Hydrogen Generation ◽  
Theoretical Calculations ◽  
Electrochemical Techniques ◽  
Time Resolved ◽  
Metal Free ◽  
Pi Conjugated ◽  
Visible Light Driven ◽  
Light Absorbers

Inspired by the active center of the natural [FeFe] hydrogenases, we designed a compact and precious metal-free photosensitizer-catalyst dyad (PS-CAT) for photocatalytic hydrogen evolution under visible light irradiation. PS-CAT represents a prototype dyad comprising pi-conjugated oligothiophenes as light absorbers. PS-CAT and its interaction with the sacrificial donor 1,3-dimethyl-2-phenylbenzimidazoline were studied by steady-state and time-resolved spectroscopy coupled with electrochemical techniques and visible light-driven photocatalytic investigations. Operando EPR spectroscopy revealed the formation of an active [Fe(I)Fe(0)] species – in accordance with theoretical calculations – presumably driving photocatalysis effectively (TON ≈ 210).

scholarly journals [FeFe] Hydrogenase based Prototype Photosensitizer-Catalyst Dyad for Hydrogen Generation under Visible Light

2021 ◽  
Author(s):  
Philipp Buday ◽  
Chizuru Kasahara ◽  
Elisabeth Hofmeister ◽  
Daniel Kowalczyk ◽  
Michael K. Farh ◽  
...  
Keyword(s):  
Visible Light ◽  
Precious Metal ◽  
Hydrogen Generation ◽  
Theoretical Calculations ◽  
Electrochemical Techniques ◽  
Time Resolved ◽  
Metal Free ◽  
Pi Conjugated ◽  
Visible Light Driven ◽  
Light Absorbers

Inspired by the active center of the natural [FeFe] hydrogenases, we designed a compact and precious metal-free photosensitizer-catalyst dyad (PS-CAT) for photocatalytic hydrogen evolution under visible light irradiation. PS-CAT represents a prototype dyad comprising pi-conjugated oligothiophenes as light absorbers. PS-CAT and its interaction with the sacrificial donor 1,3-dimethyl-2-phenylbenzimidazoline were studied by steady-state and time-resolved spectroscopy coupled with electrochemical techniques and visible light-driven photocatalytic investigations. Operando EPR spectroscopy revealed the formation of an active [Fe(I)Fe(0)] species – in accordance with theoretical calculations – presumably driving photocatalysis effectively (TON ≈ 210).

scholarly journals Activating [FeFe] hydrogenase mimic for hydrogen evolution under visible light

2021 ◽  
Author(s):  
Philipp Buday ◽  
Chizuru Kasahara ◽  
Elisabeth Hofmeister ◽  
Daniel Kowalczyk ◽  
Michael K. Farh ◽  
...  
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Precious Metal ◽  
Theoretical Calculations ◽  
Electrochemical Techniques ◽  
Time Resolved ◽  
Metal Free ◽  
Pi Conjugated ◽  
Visible Light Driven ◽  
Light Absorbers

Inspired by the active center of the natural [FeFe] hydrogenases, we designed a compact and precious metal-free photosensitizer-catalyst dyad (PS-CAT) for photocatalytic hydrogen evolution under visible light irradiation. PS-CAT represents a prototype dyad comprising pi-conjugated oligothiophenes as light absorbers. PS-CAT and its interaction with the sacrificial donor 1,3-dimethyl-2-phenylbenzimidazoline were studied by steady-state and time-resolved spectroscopy coupled with electrochemical techniques and visible light-driven photocatalytic investigations. Operando EPR spectroscopy revealed the formation of an active [Fe(I)Fe(0)] species – in accordance with theoretical calculations – presumably driving photocatalysis effectively (TON ≈ 210).

scholarly journals ZnSe quantum dots modified with a Ni(cyclam) catalyst for efficient visible-light driven CO2 reduction in water

2018 ◽  
Vol 9 (9) ◽  
pp. 2501-2509 ◽  
Author(s):  
Moritz F. Kuehnel ◽  
Constantin D. Sahm ◽  
Gaia Neri ◽  
Jonathan R. Lee ◽  
Katherine L. Orchard ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Phosphonic Acid ◽  
Precious Metal ◽  
Co2 Reduction ◽  
Metal Free ◽  
Efficient Reduction ◽  
Ligand Free ◽  
Visible Light Driven

A robust precious metal-free photocatalyst system comprised of ligand-free ZnSe quantum dots and a phosphonic acid-functionalised Ni(cyclam) catalyst achieves efficient reduction of aqueous CO2 to CO.

Insights into the efficient charge separation and transfer efficiency of La,Cr-codoped SrTiO3 modified with CoP as a noble-metal-free co-catalyst for superior visible-light driven photocatalytic hydrogen generation

2018 ◽  
Vol 5 (3) ◽  
pp. 679-686 ◽  
Author(s):  
Pengfei Tan ◽  
Anquan Zhu ◽  
Yi Liu ◽  
Yongjin Ma ◽  
Wenwen Liu ◽  
...  
Keyword(s):  
Visible Light ◽  
Noble Metal ◽  
Charge Separation ◽  
Hydrogen Generation ◽  
Transfer Efficiency ◽  
Co Catalyst ◽  
Metal Free ◽  
Photocatalytic Hydrogen Generation ◽  
Efficient Charge ◽  
Visible Light Driven

Doped SrTiO3 modified with CoP as a co-catalyst for photocatalytic H2 evolution was designed and fabricated in this work.

Highly efficient visible light-driven hydrogen production of precious metal-free hybrid photocatalyst: CdS@NiMoS core–shell nanorods

2017 ◽  
Vol 7 (13) ◽  
pp. 2798-2804 ◽  
Author(s):  
Yuguang Chao ◽  
Jianfeng Zheng ◽  
Jiazang Chen ◽  
Zhijian Wang ◽  
Suping Jia ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Precious Metal ◽  
Core Shell ◽  
Metal Free ◽  
Highly Efficient ◽  
Visible Light Driven ◽  
Hybrid Photocatalyst

CdS@NiMoS core–shell nanorods, as the well-shaped precious metal-free hybrid photocatalyst system, highly improved the efficiency and durability of photogeneration hydrogen in water.

Visible light driven metal-free intramolecular cyclization: a facile synthesis of 3-position substituted 3,4-dihydroisoquinolin-1(2H)-one

2019 ◽  
Vol 17 (2) ◽  
pp. 380-387 ◽  
Author(s):  
Shuai Zou ◽  
Shu Geng ◽  
Lina Chen ◽  
Haitao Wang ◽  
Feng Huang
Keyword(s):  
Visible Light ◽  
Intramolecular Cyclization ◽  
Facile Synthesis ◽  
Metal Free ◽  
Visible Light Driven

Visible light driven metal-free intramolecular cyclization: a facile synthesis of 3-position substituted 3,4-dihydroisoquinolin-1(2H)-one.

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