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Your search keyword '"Kärkäs, Markus D."' showing total 21 results
Start Over Author "Kärkäs, Markus D." Publisher royal society of chemistry (rsc)
21 results on '"Kärkäs, Markus D."'

2. Bifunctional and Regenerable Molecular Electrode for Water Electrolysis at Neutral pH

Author

Das, Biswanath, primary, Toledo-Carrillo, Esteban Alejandro, additional, Li, Guoqi, additional, Ståhle, Jonas, additional, Thersleff, Thomas, additional, Chen, Jianhong, additional, Li, Lin, additional, Ye, Fei, additional, Slabon, Adam, additional, Göthelid, Mats, additional, Weng, Tsu-Chien, additional, Yuwono, Jodie A., additional, Kumar, Priyank, additional, Verho, Oscar, additional, Kärkäs, Markus D., additional, Dutta, Joydeep, additional, and Åkermark, Björn, additional

Published
2023
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3. Ruthenium containing molecular electrocatalyst on glassy carbon for electrochemical water splitting

Author

Li, L., Das, B., Rahaman, A., Shatskiy, Andrey, Fei, Ye, Cheng, P., Yuan, C., Yang, Z., Verho, O., Kärkäs, Markus D., Dutta, Joydeep, Weng, T. -C, Åkermark, B., Li, L., Das, B., Rahaman, A., Shatskiy, Andrey, Fei, Ye, Cheng, P., Yuan, C., Yang, Z., Verho, O., Kärkäs, Markus D., Dutta, Joydeep, Weng, T. -C, and Åkermark, B.

Abstract

Electrochemical water splitting constitutes one of the most promising strategies for converting water into hydrogen-based fuels, and this technology is predicted to play a key role in the transition towards a carbon-neutral energy economy. To enable the design of cost-effective electrolysis cells based on this technology, new and more efficient anodes with augmented water splitting activity and stability will be required. Herein, we report an active molecular Ru-based catalyst for electrochemically-driven water oxidation (overpotential of ∼395 mV at pH 7 phosphate buffer) and two simple methods for preparing anodes by attaching this catalyst onto glassy carbon through multi-walled carbon nanotubes to improve stability as well as reactivity. The anodes modified with the molecular catalyst were characterized by a broad toolbox of microscopy and spectroscopy techniques, and interestingly no RuO2 formation was detected during electrocatalysis over 4 h. These results demonstrate that the herein presented strategy can be used to prepare anodes that rival the performance of state-of-the-art metal oxide anodes., QC 20230227

Published
2022
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4. Copper-assisted Wittig-type olefination of aldehydes with p-toluenesulfonylmethyl isocyanide

Author

Wang, Y. -C, Chen, X., Alvey, Gregory R., Shatskiy, Andrey, Liu, Jianquan, Kärkäs, Markus D., Wang, X. -S, Wang, Y. -C, Chen, X., Alvey, Gregory R., Shatskiy, Andrey, Liu, Jianquan, Kärkäs, Markus D., and Wang, X. -S

Abstract

The Wittig reaction is a valuable and powerful tool in organic synthesis, providing a convenient route from aldehydes and ketones to alkenes. Herein, a novel copper-assisted Wittig-type olefination of aldehydes with p-toluenesulfonylmethyl isocyanide (TosMIC) is disclosed, providing a direct and operationally simple approach to (E)-vinyl sulfones under mild conditions, compatible with a multitude of common functional groups. Experimental and computational investigations imply that the reaction proceeds through an intriguing electronically-controlled (3 + 2)/retro-(3 + 2) cycloaddition pathway., QC 20230404

Published
2022
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5. Ruthenium containing molecular electrocatalyst on glassy carbon for electrochemical water splitting

Author

Li, Lin, primary, Das, Biswanath, additional, Rahaman, Ahibur, additional, Shatskiy, Andrey, additional, Ye, Fei, additional, Cheng, Peihong, additional, Yuan, Chunze, additional, Yang, Zhiqi, additional, Verho, Oscar, additional, Kärkäs, Markus D., additional, Dutta, Joydeep, additional, Weng, Tsu-Chien, additional, and Åkermark, Björn, additional

Published
2022
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7. Modular synthesis of 3-substituted isocoumarinsviasilver-catalyzed aerobic oxidation/6-endoheterocyclization ofortho-alkynylbenzaldehydes

Author

Wu, H., Wang, Y. -C, Shatskiy, Andrey, Li, Q. -Y, Liu, Jianquan, Kärkäs, Markus D., Wang, X. -S, Wu, H., Wang, Y. -C, Shatskiy, Andrey, Li, Q. -Y, Liu, Jianquan, Kärkäs, Markus D., and Wang, X. -S

Abstract

A method involving silver-catalyzed aerobic oxidation/6-endoheterocyclization ofortho-alkynylbenzaldehydes to yield 3-substituted isocoumarins is described. The developed protocol allows convenient access to a range of synthetically useful 3-substituted isocoumarins and related fused heterocyclolactones in good to high yields, using silver tetrafluoroborate as the catalyst, and atmospheric oxygen as the terminal oxidant and the source of endocyclic oxygen. Mechanistic studies suggest the involvement of a free-radical pathway., QC 20220425

Published
2021
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8. Back cover

Author

Shatskiy, Andrey, Axelsson, Anton, Stepanova, Elena, V, Liu, Jianquan, Temerdashev, Azamat Z., Kore, Bhushan P., Blomkvist, Björn, Gardner, James M., Dinér, Peter, Kärkäs, Markus D., Shatskiy, Andrey, Axelsson, Anton, Stepanova, Elena, V, Liu, Jianquan, Temerdashev, Azamat Z., Kore, Bhushan P., Blomkvist, Björn, Gardner, James M., Dinér, Peter, and Kärkäs, Markus D.

Abstract

QC 20210609

Published
2021
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19. Water oxidation catalyzed by molecular di- and nonanuclear Fe complexes: importance of a proper ligand framework

Author

Das, Biswanath, primary, Lee, Bao-Lin, additional, Karlsson, Erik A., additional, Åkermark, Torbjörn, additional, Shatskiy, Andrey, additional, Demeshko, Serhiy, additional, Liao, Rong-Zhen, additional, Laine, Tanja M., additional, Haukka, Matti, additional, Zeglio, Erica, additional, Abdel-Magied, Ahmed F., additional, Siegbahn, Per E. M., additional, Meyer, Franc, additional, Kärkäs, Markus D., additional, Johnston, Eric V., additional, Nordlander, Ebbe, additional, and Åkermark, Björn, additional

Published
2016
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