scholarly journals Promoting photocatalytic CO2 reduction with a molecular copper purpurin chromophore

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Huiqing Yuan ◽  
Banggui Cheng ◽  
Jingxiang Lei ◽  
Long Jiang ◽  
Zhiji Han
Keyword(s):  
Rational Design ◽  
Artificial Photosynthesis ◽  
Reduction Potential ◽  
Co2 Reduction ◽  
Turnover Number ◽  
Free System ◽  
Organic Chromophores ◽  
Highly Efficient ◽  
Redox Active ◽  
Earth Abundant

AbstractCO2 reduction through artificial photosynthesis represents a prominent strategy toward the conversion of solar energy into fuels or useful chemical feedstocks. In such configuration, designing highly efficient chromophores comprising earth-abundant elements is essential for both light harvesting and electron transfer. Herein, we report that a copper purpurin complex bearing an additional redox-active center in natural organic chromophores is capable to shift the reduction potential 540 mV more negative than its organic dye component. When this copper photosensitizer is employed with an iron porphyrin as the catalyst and 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole as the sacrificial reductant, the system achieves over 16100 turnover number of CO from CO2 with a 95% selectivity (CO vs H2) under visible-light irradiation, which is among the highest reported for a homogeneous noble metal-free system. This work may open up an effective approach for the rational design of highly efficient chromophores in artificial photosynthesis.

Well-dispersed ultrasmall VC nanoparticles embedded in N-doped carbon nanotubes as highly efficient electrocatalysts for hydrogen evolution reaction

Nanoscale ◽  
2018 ◽  
Vol 10 (29) ◽  
pp. 14272-14279 ◽  
Author(s):  
Liyun Cao ◽  
Ning Zhang ◽  
Liangliang Feng ◽  
Jianfeng Huang ◽  
Yongqiang Feng ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Rational Design ◽  
Catalytic Properties ◽  
Design And Synthesis ◽  
Highly Efficient ◽  
Earth Abundant

The rational design and synthesis of ultrasmall metal-based electrocatalysts using earth-abundant elements are considered as a promising route to improve catalytic properties.

Coordination–driven discrete metallo–supramolecular assembly for rapid and selective photochemical CO2 reduction in aqueous solution

2021 ◽  
Author(s):  
Yanan Wang ◽  
Longxin Chen ◽  
Ting Liu ◽  
Duobin Chao
Keyword(s):  
Aqueous Solution ◽  
Visible Light ◽  
Co2 Reduction ◽  
Supramolecular Assembly ◽  
Highly Efficient ◽  
Redox Active ◽  
Visible Light Driven ◽  
Reduction Of Co2

A discrete metallo–supramolecular assembly composed of six iron(II) cations and twelve redox–active terpyridine fragments has been developed for highly efficient visible–light–driven reduction of CO2 to CO with a TON of...

Capture and Electroreduction of CO2 Using Highly Efficient Bimetallic Pd-Ag Aerogels Paired with Carbon Nanotubes

2021 ◽  
Author(s):  
Maryam Abdinejad ◽  
Celia Ferrag ◽  
M. Nur Hossain ◽  
Meissam Noroozifar ◽  
Kagan Kerman ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Noble Metal ◽  
Rational Design ◽  
State Of The Art ◽  
Co2 Reduction ◽  
Critical Step ◽  
Highly Efficient ◽  
Electrochemical Co2 Reduction

The rational design of efficient catalysts for electrochemical CO2 reduction is a critical step towards achieving industry-ready electrolyzer systems. Noble metal aerogels have emerged as state-of-the-art catalysts that play a...

Rational Design of Ion Exchange Membrane Material Properties Limits the Crossover of CO2 Reduction Products in Artificial Photosynthesis Devices

2020 ◽  
Vol 12 (10) ◽  
pp. 12030-12042 ◽  
Author(s):  
Maximilian Krödel ◽  
Blaine M. Carter ◽  
Deniz Rall ◽  
Johannes Lohaus ◽  
Matthias Wessling ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Material Properties ◽  
Rational Design ◽  
Artificial Photosynthesis ◽  
Co2 Reduction ◽  
Ion Exchange Membrane ◽  
Membrane Material ◽  
Exchange Membrane

scholarly journals Defect and Doping Co-Engineered Non-Metal Nanocarbon ORR Electrocatalyst

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Jian Zhang ◽  
Jingjing Zhang ◽  
Feng He ◽  
Yijun Chen ◽  
Jiawei Zhu ◽  
...  
Keyword(s):  
Rational Design ◽  
Low Cost ◽  
Reduction Reaction ◽  
Defect Engineering ◽  
Heteroatom Doping ◽  
Competitive Activity ◽  
Design And Manufacturing ◽  
Earth Abundant ◽  
Induced Defects ◽  
Carbon Based

AbstractExploring low-cost and earth-abundant oxygen reduction reaction (ORR) electrocatalyst is essential for fuel cells and metal–air batteries. Among them, non-metal nanocarbon with multiple advantages of low cost, abundance, high conductivity, good durability, and competitive activity has attracted intense interest in recent years. The enhanced ORR activities of the nanocarbons are normally thought to originate from heteroatom (e.g., N, B, P, or S) doping or various induced defects. However, in practice, carbon-based materials usually contain both dopants and defects. In this regard, in terms of the co-engineering of heteroatom doping and defect inducing, we present an overview of recent advances in developing non-metal carbon-based electrocatalysts for the ORR. The characteristics, ORR performance, and the related mechanism of these functionalized nanocarbons by heteroatom doping, defect inducing, and in particular their synergistic promotion effect are emphatically analyzed and discussed. Finally, the current issues and perspectives in developing carbon-based electrocatalysts from both of heteroatom doping and defect engineering are proposed. This review will be beneficial for the rational design and manufacturing of highly efficient carbon-based materials for electrocatalysis.

scholarly journals The CO2 reduction potential of shore-side electricity in Europe

2021 ◽  
Vol 285 ◽  
pp. 116425
Author(s):  
B. Stolz ◽  
M. Held ◽  
G. Georges ◽  
K. Boulouchos
Keyword(s):  
Reduction Potential ◽  
Co2 Reduction
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