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Start Over Author "Nickel, Bert" Journal angewandte chemie
5 results on '"Nickel, Bert"'

1. Photodegradation of CuBi2O4 Films Evidenced by Fast Formation of Metallic Bi using Operando Surface‐sensitive X‐ray Scattering**

Author

Derelli, Davide, primary, Caddeo, Francesco, additional, Frank, Kilian, additional, Krötzsch, Kilian, additional, Ewerhardt, Patrick, additional, Krüger, Marco, additional, Medicus, Sophie, additional, Klemeyer, Lars, additional, Skiba, Marvin, additional, Ruhmlieb, Charlotte, additional, Gutowski, Olof, additional, Dippel, Ann‐Christin, additional, Parak, Wolfgang J., additional, Nickel, Bert, additional, and Koziej, Dorota, additional

Published
2023
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2. Photodegradation of CuBi2O4 Films Evidenced by Fast Formation of Metallic Bi using Operando Surface‐sensitive X‐ray Scattering**.

Author

Derelli, Davide, Caddeo, Francesco, Frank, Kilian, Krötzsch, Kilian, Ewerhardt, Patrick, Krüger, Marco, Medicus, Sophie, Klemeyer, Lars, Skiba, Marvin, Ruhmlieb, Charlotte, Gutowski, Olof, Dippel, Ann‐Christin, Parak, Wolfgang J., Nickel, Bert, and Koziej, Dorota

Subjects
PHOTOCATHODES, X-ray scattering, PHOTODEGRADATION, COPPER, X-rays, PHOTOCURRENTS
Abstract

CuBi2O4 has recently emerged as a promising photocathode for photo‐electrochemical (PEC) water splitting. However, its fast degradation under operation currently poses a limit to its application. Here, we report a novel method to study operando the semiconductor‐electrolyte interface during PEC operation by surface‐sensitive high‐energy X‐ray scattering. We find that a fast decrease in the generated photocurrents correlates directly with the formation of a metallic Bi phase. We further show that the slower formation of metallic Cu, as well as the dissolution of the electrode in contact with the electrolyte, further affect the CuBi2O4 activity and morphology. Our study provides a comprehensive picture of the degradation mechanisms affecting CuBi2O4 electrodes under operation and poses the methodological basis to investigate the photocorrosion processes affecting a wide range of PEC materials. [ABSTRACT FROM AUTHOR]

Published
2023
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5. A Highly-Ordered 3D Covalent Fullerene Framework

Author

Minar, Norma K., primary, Hou, Kun, additional, Westermeier, Christian, additional, Döblinger, Markus, additional, Schuster, Jörg, additional, Hanusch, Fabian C., additional, Nickel, Bert, additional, Ozin, Geoffrey A., additional, and Bein, Thomas, additional

Published
2015
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