Graphitic Carbon Nitride as Reinforcement of Photopolymer Resin for 3D Printing.

Digital light processing (DLP) has the advantages of higher printing speed and product precision than other 3D printing technologies. However, DLP products have low mechanical strength owing to the inherent properties of photocurable materials. Graphitic carbon nitride (GCN), which is an abundant hydrogen bonding motif (-NH, -NH), has low solubility in most solvents; thus, to use GCN as a reinforcement of the polymer matrix, optimal dispersion processes must be applied.

CO -Reductive, Copper Oxide-Based Photobiocathode for Z-Scheme Semi-Artificial Leaf Structure.

Green plants convert sunlight into high-energy chemicals by coupling solar-driven water oxidation in the Z-scheme and CO fixation in the Calvin cycle. In this study, formate dehydrogenase from Clostridium ljungdahlii (ClFDH) is interfaced with a TiO -coated CuFeO and CuO mixed (ClFDH-TiO |CFO) electrode. In this biohybrid photocathode, the TiO layer enhances the photoelectrochemical (PEC) stability of the labile CFO photocathode and facilitates the transfer of photoexcited electrons from the CFO to ClFDH.

Biological Nicotinamide Cofactor as a Redox-Active Motif for Reversible Electrochemical Energy Storage.

Nicotinamide adenine dinucleotide (NAD ) is one of the most well-known redox cofactors carrying electrons. Now, it is reported that the intrinsically charged NAD motif can serve as an active electrode in electrochemical lithium cells. By anchoring the NAD motif by the anion incorporation, redox activity of the NAD is successfully implemented in conventional batteries, exhibiting the average voltage of 2.

Unbiased biocatalytic solar-to-chemical conversion by FeOOH/BiVO/perovskite tandem structure.

Redox enzymes catalyze fascinating chemical reactions with excellent regio- and stereo-specificity. Nicotinamide adenine dinucleotide cofactor is essential in numerous redox biocatalytic reactions and needs to be regenerated because it is consumed as an equivalent during the enzymatic turnover. Here we report on unbiased photoelectrochemical tandem assembly of a photoanode (FeOOH/BiVO) and a perovskite photovoltaic to provide sufficient potential for cofactor-dependent biocatalytic reactions.

Self-Assembled Peptide-Carbon Nitride Hydrogel as a Light-Responsive Scaffold Material.

Peptide self-assembly is a facile route to the development of bioorganic hybrid materials that have sophisticated nanostructures toward diverse applications. Here, we report the synthesis of self-assembled peptide (Fmoc-diphenylalanine, Fmoc-FF)/graphitic carbon nitride (g-CN) hydrogels for light harvesting and biomimetic photosynthesis through noncovalent interactions between aromatic rings in Fmoc-FF nanofibers and tris-s-triazine in g-CN nanosheets. According to our analysis, the photocurrent density of the Fmoc-FF/g-CN hydrogel was 1.

Nature-Inspired Synthesis of Nanostructured Electrocatalysts through Mineralization of Calcium Carbonate.

Biomineralization is a biogenic process that produces elaborate inorganic and organic hybrid materials in nature. Inspired by the natural process, this study explored a new mineralization approach to create nanostructured CaCO films composed of amorphous CaCO hemispheres by using catechol-rich polydopamine (PDA) as a biomimetic mediator. The thus synthesized biomimetic CaCO was successfully transformed to nanostructured films of metal-oxide minerals, such as FeOOH, CoCO , NiCO , and MnOOH, through a simple procedure.

Catecholamine-functionalized graphene as a biomimetic redox shuttle for solar water oxidation.

In natural photosynthesis, solar energy is converted to chemical energy through a cascaded, photoinduced charge transfer chain that consists of primary and secondary acceptor quinones (i.e., Q and Q).

Sunlight-assisted, biocatalytic formate synthesis from CO2 and water using silicon-based photoelectrochemical cells.

We report on a silicon-based photoelectrochemical cell that integrates a formate dehydrogenase from Thiobacillus sp. (TsFDH) to convert CO2 to formate using water as an electron donor under visible light irradiation and an applied bias. Our current study suggests that the deliberate integration of biocatalysis to a light-harvesting platform could provide an opportunity to synthesize valuable chemicals with the use of earth-abundant materials and sustainable resources.

Human Urine-Fueled Light-Driven NADH Regeneration for Redox Biocatalysis.

Human urine is considered as an alternative source of hydrogen and electricity owing to its abundance and high energy density. Here we show the utility of human urine as a chemical fuel for driving redox biocatalysis in a photoelectrochemical cell. Ni(OH)2 -modified α-Fe2 O3 is selected as a photoanode for the oxidation of urea in human urine and black silicon (bSi) is used as a photocathode material for nicotinamide cofactor (NADH: hydrogenated nicotinamide adenine dinucleotide) regeneration.

Photoactive g-C3 N4 Nanosheets for Light-Induced Suppression of Alzheimer's β-Amyloid Aggregation and Toxicity.

Graphitic carbon nitride (g-C3 N4 ) has a suppressive capability toward Alzheimer's Aβ aggregation under light-illumination. Photoinduced electrons of g-C3 N4 generate reactive oxygen resulting in photooxidation of amyloid peptides that blocks Aβ aggregation. Fe doping of g-C3 N4 frameworks results in enhanced optical properties and even stronger inhibition of Aβ aggregation.

Bi-functional RuO2-Co3O4 core-shell nanofibers as a multi-component one-dimensional water oxidation catalyst.

The core-shell structure of RuO2-Co3O4 fibers comprising the inner region of highly conductive RuO2 and the outer region of catalytic Co3O4 provided a fast and effective transport pathway for holes to O2-evolving sites, leading to a highly efficient water oxidation performance.