Publications by authors named "N Ia Tkachenko"

Carbon capture can mitigate point-source carbon dioxide (CO) emissions, but hurdles remain that impede the widespread adoption of amine-based technologies. Capturing CO at temperatures closer to those of many industrial exhaust streams (>200°C) is of interest, although metal oxide absorbents that operate at these temperatures typically exhibit sluggish CO absorption kinetics and instability to cycling. Here, we report a porous metal-organic framework featuring terminal zinc hydride sites that reversibly bind CO at temperatures above 200°C-conditions that are unprecedented for intrinsically porous materials.

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Article Synopsis
  • The study explores stable complexes formed between colloidal CdTe quantum dots and two different cobalt porphyrin derivatives, highlighting their potential in photocatalytic applications.
  • Researchers found that the binding of the porphyrins is stronger to the quantum dots than originally thought, with significant differences in electron transfer rates due to structural variations in the porphyrins.
  • The findings suggest that porphyrin alignment changes upon excitation enhance the charge-separated state's lifetime and propose that these complexes could be effective for CO reduction catalysis.
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Hydrogen peroxide (HO) is a crucial chemical used in numerous industrial applications, yet its manufacturing relies on the energy-demanding anthraquinone process. Solar-driven synthesis of HO is gaining traction as a promising research area, providing a sustainable method for its production. Herein, a controllable activation of n → π* electronic transition is presented to boost the photocatalytic HO evolution in ionic carbon nitrides.

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Developing bioinspired materials to convert sunlight into electricity efficiently is paramount for sustainable energy production. Fluorescent proteins are promising candidates as photoactive materials due to their high fluorescence quantum yield and absorption extinction coefficients in aqueous media. However, developing artificial bioinspired photosynthetic systems requires a detailed understanding of molecular interactions and energy transfer mechanisms in the required operating conditions.

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