Stable 3D neutral gallium thioantimonate frameworks decorated with transition metal complexes for tunable photocatalytic hydrogen evolution

2022 ◽  
Author(s):  
Juan Li ◽  
Chengdong Liu ◽  
Xiang Wang ◽  
Yayun Ding ◽  
Zhou Wu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Hydrogen Evolution ◽  
Transition Metal Complexes ◽  
Structural Diversity ◽  
Optoelectronic Properties ◽  
Photocatalytic Hydrogen Evolution ◽  
Synthetic Strategy

Incorporating transition metal (TM) complexes into cluster-based chalcogenide frameworks is an effective synthetic strategy to induce structural diversity and to control the optoelectronic properties, which may further improve their photocatalytic...

First-row transition metal porphyrins for electrocatalytic hydrogen evolution — a SPP/JPP Young Investigator Award paper

2020 ◽  
Vol 24 (11n12) ◽  
pp. 1361-1371
Author(s):  
Haitao Lei ◽  
Yabo Wang ◽  
Qingxin Zhang ◽  
Rui Cao
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Hydrogen Evolution ◽  
Transition Metal Complexes ◽  
Catalytic Efficiency ◽  
Electrochemical Analysis ◽  
Metal Porphyrin ◽  
High Turnover ◽  
Faradaic Efficiency ◽  
Metal Porphyrins

A series of first-row transition metal complexes of tetrakis(pentafluorophenyl)porphyrin (1), denoted as 1-M (M [Formula: see text] Mn, Fe, Co, Ni, Cu, and Zn), were synthesized and examined as electrocatalysts for the hydrogen evolution reaction (HER). All these transition metal porphyrins were shown to be active for HER in acetonitrile using trifluoroacetic acid (TFA) as the proton source. The molecular nature and the stability of these metal porphyrins when functioning as HER catalysts were confirmed, and all catalysts gave Faradaic efficiency of >97% for H2 generation during bulk electrolysis. Importantly, by using 1-Cu, a remarkably high turnover frequency (TOF) of 48500 s[Formula: see text] 1-Cu the most efficient among this series of metal porphyrin catalysts. This TOF value also represents one of the highest values reported in the literature. In addition, electrochemical analysis demonstrated that catalytic HER mechanisms with these 1-M complexes are different. These results show that with the same porphyrin ligand, the change of metal ions will have significant impact on both catalytic efficiency and mechanism. This work for the first time provides direct comparison of electrocatalytic HER features of transition metal complexes of tetrakis(pentafluorophenyl)porphyrin under identical conditions, and will be valuable for future design and development of more efficient HER electrocatalysts of this series.

scholarly journals Tandem redox mediator/Ni(ii) trihalide complex photocycle for hydrogen evolution from HCl

2015 ◽  
Vol 6 (2) ◽  
pp. 917-922 ◽  
Author(s):  
Seung Jun Hwang ◽  
David C. Powers ◽  
Andrew G. Maher ◽  
Daniel G. Nocera
Keyword(s):  
Excited State ◽  
Transition Metal ◽  
Metal Complexes ◽  
Hydrogen Evolution ◽  
Transition Metal Complexes ◽  
Redox Mediator ◽  
Metal Catalyst ◽  
Nickel Metal ◽  
Excited State Lifetimes

The challenge that short excited state lifetimes of first-row transition metal complexes present to the photoactivation of M–X bonds has been overcome with a phosphine mediator coupled to a nickel metal catalyst.

scholarly journals Structural diversity of late transition metal complexes with flexible tetra-NHC ligands

2015 ◽  
Vol 44 (42) ◽  
pp. 18329-18339 ◽  
Author(s):  
Daniel T. Weiss ◽  
Philipp J. Altmann ◽  
Stefan Haslinger ◽  
Christian Jandl ◽  
Alexander Pöthig ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Structural Diversity ◽  
Late Transition Metal ◽  
Silver Complexes ◽  
Late Transition

Silver complexes with flexible tetra-NHC ligands were used as transmetalation agent to access a series of d-block metal complexes.

Transition metal complexes of a bis(carbene) ligand featuring 1,2,4-triazolin-5-ylidene donors: structural diversity and catalytic applications

2020 ◽  
Vol 49 (34) ◽  
pp. 11958-11970 ◽  
Author(s):  
Vivek Kumar Singh ◽  
S. N. R. Donthireddy ◽  
Praseetha Mathoor Illam ◽  
Arnab Rit
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Multiple Bond ◽  
Structural Diversity ◽  
Secondary Alcohols ◽  
Catalytic Applications

The 1,2,4-triazolin-5-ylidene donor supported binuclear AgI/CuI as well as IrIII/RuII-NHC complexes (efficient catalysts for the C–C multiple bond reduction and the alkylation of secondary alcohols, respectively) have been developed.

Cobalt, nickel, and iron complexes of 8-hydroxyquinoline-di(2-picolyl)amine for light-driven hydrogen evolution

2017 ◽  
Vol 46 (47) ◽  
pp. 16455-16464 ◽  
Author(s):  
Nadia Alessandra Carmo dos Santos ◽  
Mirco Natali ◽  
Elena Badetti ◽  
Klaus Wurst ◽  
Giulia Licini ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Hydrogen Evolution ◽  
Transition Metal Complexes ◽  
Iron Complexes ◽  
Cobalt Nickel ◽  
Amine Ligand

Novel first-row transition metal complexes based on the 8-hydroxyquinoline-di(2-picolyl)amine ligand were prepared and tested as potential HECs in light-driven experiments.

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