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1,067 results on '"Bahnemann, Detlef W."'

18. Advances in TiO2-enhanced photocatalytic building materials: applications in cement and asphalt for environmental purification.

Author

Tang, Shuangchao, Mu, Benhong, Li, Yanjie, Tian, Jie, Li, Yu, Cao, Yijian, Bahnemann, Detlef W., and Pan, Jiahong

Subjects
CARBON-based materials, CONSTRUCTION materials, SUSTAINABLE construction, PHYSICAL & theoretical chemistry, CARBON offsetting
Abstract

Copyright of Low-Carbon Materials & Green Construction is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2024
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19. Charge Transfer Mechanism in Type II WO 3 /Cu 2 O Heterostructure.

Author

Murashkina, Anna A., Rudakova, Aida V., Bakiev, Tair V., Emeline, Alexei V., and Bahnemann, Detlef W.

Subjects
SOLAR energy conversion, CHARGE transfer, X-ray diffraction, PHOTOELECTROCHEMISTRY, ELECTRODES
Abstract

In this study, we explore the charge transfer mechanism between WO3 and Cu2O in heterostructured WO3/Cu2O electrodes and in a WO3||Cu2O tandem photoelectrochemical cell. The physical–chemical characterizations of the individual WO3 and Cu2O electrodes and the heterostructured WO3/Cu2O electrode by XRD, XPS, and SEM methods confirm the successful formation of the target systems. The results of photoelectrochemical studies infer that in both the heterostructured WO3/Cu2O electrode and WO3||Cu2O tandem photoelectrochemical cell, the major mechanism of charge transfer between WO3 and Cu2O is a realization of the Z-scheme. [ABSTRACT FROM AUTHOR]

Published
2024
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32. Pivotal Impact Factors in Photocatalytic Reduction of CO2 to Value‐Added C1 and C2 Products.

Author

Cui, Yongqian, Labidi, Abdelkader, Liang, Xinxin, Huang, Xin, Wang, Jingyi, Li, Ximing, Dong, Qibing, Zhang, Xiaolong, Othman, Sarah I., Allam, Ahmed A., Bahnemann, Detlef W., and Wang, Chuanyi

Subjects
ACTIVATION energy, CLIMATE change, PHOTOREDUCTION, CARBON emissions, OXYGEN reduction
Abstract

Over the past decades, CO2 greenhouse emission has been considerably increased, causing global warming and climate change. Indeed, converting CO2 into valuable chemicals and fuels is a desired option to resolve issues caused by its continuous emission into the atmosphere. Nevertheless, CO2 conversion has been hampered by the ultrahigh dissociation energy of C=O bonds, which makes it thermodynamically and kinetically challenging. From this prospect, photocatalytic approaches appear promising for CO2 reduction in terms of their efficiency compared to other traditional technologies. Thus, many efforts have been made in the designing of photocatalysts with asymmetric sites and oxygen vacancies, which can break the charge distribution balance of CO2 molecule, reduce hydrogenation energy barrier and accelerate CO2 conversion into chemicals and fuels. Here, we review the recent advances in CO2 hydrogenation to C1 and C2 products utilizing photocatalysis processes. We also pin down the key factors or parameters influencing the generation of C2 products during CO2 hydrogenation. In addition, the current status of CO2 reduction is summarized, projecting the future direction for CO2 conversion by photocatalysis processes. [ABSTRACT FROM AUTHOR]

Published
2024
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