Principles of Natural Photosynthesis

2015 ◽  
pp. 23-48 ◽  
Author(s):  
Vera Krewald ◽  
Marius Retegan ◽  
Dimitrios A. Pantazis
Keyword(s):  
Natural Photosynthesis

Integrating photon up- and down-conversion to produce efficient light-harvesting materials for enhancing natural photosynthesis

2021 ◽  
Author(s):  
Mingyue Jiang ◽  
Yue Yuan ◽  
Yuchen Fang ◽  
Shouxin Liu ◽  
Jian Li ◽  
...  
Keyword(s):  
Light Harvesting ◽  
Plant Research ◽  
Down Conversion ◽  
Natural Photosynthesis ◽  
Working Efficiency

Using light-harvesting materials to enhance natural photosynthesis is attracting much attention in both materials and plant research. The working efficiency of most light-harvesting materials is, however, compromised by a narrow...

scholarly journals Cover Picture: Self-Assembled Light-Harvesting Peptide Nanotubes for Mimicking Natural Photosynthesis (Angew. Chem. Int. Ed. 2/2012)

2011 ◽  
Vol 51 (2) ◽  
pp. 279-279
Author(s):  
Jae Hong Kim ◽  
Minah Lee ◽  
Joon Seok Lee ◽  
Chan Beum Park
Keyword(s):  
Light Harvesting ◽  
Peptide Nanotubes ◽  
Self Assembled ◽  
Natural Photosynthesis

scholarly journals From natural to artificial photosynthesis

2013 ◽  
Vol 10 (81) ◽  
pp. 20120984 ◽  
Author(s):  
James Barber ◽  
Phong D. Tran
Keyword(s):  
Solar Energy ◽  
Large Scale ◽  
Nuclear Fusion ◽  
Fusion Energy ◽  
High Energy ◽  
Primary Energy ◽  
Energy Resources ◽  
High Energy Density ◽  
Chemical Bonds ◽  
Natural Photosynthesis

Demand for energy is projected to increase at least twofold by mid-century relative to the present global consumption because of predicted population and economic growth. This demand could be met, in principle, from fossil energy resources, particularly coal. However, the cumulative nature of carbon dioxide (CO 2 ) emissions demands that stabilizing the atmospheric CO 2 levels to just twice their pre-anthropogenic values by mid-century will be extremely challenging, requiring invention, development and deployment of schemes for carbon-neutral energy production on a scale commensurate with, or larger than, the entire present-day energy supply from all sources combined. Among renewable and exploitable energy resources, nuclear fusion energy or solar energy are by far the largest. However, in both cases, technological breakthroughs are required with nuclear fusion being very difficult, if not impossible on the scale required. On the other hand, 1 h of sunlight falling on our planet is equivalent to all the energy consumed by humans in an entire year. If solar energy is to be a major primary energy source, then it must be stored and despatched on demand to the end user. An especially attractive approach is to store solar energy in the form of chemical bonds as occurs in natural photosynthesis. However, a technology is needed which has a year-round average conversion efficiency significantly higher than currently available by natural photosynthesis so as to reduce land-area requirements and to be independent of food production. Therefore, the scientific challenge is to construct an ‘artificial leaf’ able to efficiently capture and convert solar energy and then store it in the form of chemical bonds of a high-energy density fuel such as hydrogen while at the same time producing oxygen from water. Realistically, the efficiency target for such a technology must be 10 per cent or better. Here, we review the molecular details of the energy capturing reactions of natural photosynthesis, particularly the water-splitting reaction of photosystem II and the hydrogen-generating reaction of hydrogenases. We then follow on to describe how these two reactions are being mimicked in physico-chemical-based catalytic or electrocatalytic systems with the challenge of creating a large-scale robust and efficient artificial leaf technology.

scholarly journals Titelbild: Self-Assembled Light-Harvesting Peptide Nanotubes for Mimicking Natural Photosynthesis (Angew. Chem. 2/2012)

2011 ◽  
Vol 124 (2) ◽  
pp. 285-285
Author(s):  
Jae Hong Kim ◽  
Minah Lee ◽  
Joon Seok Lee ◽  
Chan Beum Park
Keyword(s):  
Light Harvesting ◽  
Peptide Nanotubes ◽  
Self Assembled ◽  
Natural Photosynthesis

Enhanced the solar-to-hydrogen efficiency for photocatalytic water splitting based on polarized heterostructure: The role of intrinsic dipole in heterostructures

2021 ◽  
Author(s):  
Xinyi Liu ◽  
Peng Cheng ◽  
Xiuhai Zhang ◽  
Tao Shen ◽  
Jia Liu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Photocatalytic Water Splitting ◽  
Natural Photosynthesis

Inspired by natural photosynthesis, direct Z-scheme heterostructures are considered as promising photocatalysts for solar-driven water splitting and attract ever-growing interest. To date, it is still a challenge to achieve a...

Chapter 4. Natural Photosynthesis System

2015 ◽  
pp. 64-91
Author(s):  
David S. Gray ◽  
Nulazhi Yeerxiati
Keyword(s):  
Natural Photosynthesis

Photoelectrochemical OER activity by employing BiVO4 with manganese oxide co-catalysts

2020 ◽  
Vol 22 (2) ◽  
pp. 811-817 ◽  
Author(s):  
Manjodh Kaur ◽  
Manjeet Chhetri ◽  
C. N. R. Rao
Keyword(s):  
Manganese Oxide ◽  
Water Splitting ◽  
Manganese Oxides ◽  
Photoelectrochemical Water Splitting ◽  
Co Catalysts ◽  
Natural Photosynthesis

Inspired by natural photosynthesis, various manganese oxides have been studied as co-catalysts with BiVO4 for photoelectrochemical water splitting.

Bio-hybrid photoconverter by covalent functionalization of the photosynthetic reaction center of Rhodobacter sphaeroides with fluorescein isothiocyanate

2015 ◽  
Vol 1722 ◽  
Author(s):  
Rocco Roberto Tangorra ◽  
Alessandra Antonucci ◽  
Francesco Milano ◽  
Simona la Gatta ◽  
Alessandra Operamolla ◽  
...  
Keyword(s):  
Hybrid Systems ◽  
Reaction Center ◽  
Rhodobacter Sphaeroides ◽  
Photosynthetic Reaction Center ◽  
Fluorescein Isothiocyanate ◽  
Covalent Functionalization ◽  
Photosynthetic Proteins ◽  
Natural Photosynthesis

ABSTRACTOrganic biological hybrid systems, accessible by covalent functionalization of photosynthetic proteins with molecular antennas, represent a promising novelty to enhance natural photosynthesis. In this paper, we present the successful bioconjugation of a commercial fluorophore, fluorescein isothiocyanate (FITC), to the photosynthetic reaction center RC from the bacterium Rhodobacter sphaeroides strain R26. The resulting hybrid outperforms the pristine protein in hole-electron couple generation yield, exclusively at wavelengths where the fluorophore absorbs while the protein does not.

A carbon-based photocatalyst efficiently converts CO2 to CH4 and C2H2 under visible light

2014 ◽  
Vol 16 (4) ◽  
pp. 2142-2146 ◽  
Author(s):  
Tongshun Wu ◽  
Luyi Zou ◽  
Dongxue Han ◽  
Fenghua Li ◽  
Qixian Zhang ◽  
...  
Keyword(s):  
Visible Light ◽  
Natural Photosynthesis ◽  
Carbon Based

Photocatalysts consisting of porphyrin and graphene have been designed and applied to reduce CO2 to C2H2 under visible light, which is an excellent simulator of natural photosynthesis.

Enzymatic photosynthesis of formate from carbon dioxide coupled with highly efficient photoelectrochemical regeneration of nicotinamide cofactors

2016 ◽  
Vol 18 (22) ◽  
pp. 5989-5993 ◽  
Author(s):  
Dong Heon Nam ◽  
Su Keun Kuk ◽  
Hyunjun Choe ◽  
Sumi Lee ◽  
Jong Wan Ko ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Enzymatic Synthesis ◽  
Highly Efficient ◽  
Natural Photosynthesis

We present the photoelectrochemical (PEC) regeneration of nicotinamide cofactors (NADH) coupled with the enzymatic synthesis of formate from CO2 towards mimicking natural photosynthesis.

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