Article
Chemistry, Multidisciplinary
Meng Li, Matthew T. Curnan, Wissam A. Saidi, Judith C. Yang
Summary: Understanding the influence of defects on oxidation is crucial for the applications of nano-oxides in catalysis, electronics, and corrosion. This study investigates the uneven surface oxidation induced by surface steps on copper materials using atomic-scale in situ environmental transmission electron microscopy experiments. The results provide mechanistic explanations for the observed formation site preferences, which vary with surface orientation and oxygen concentration, based on Ehrlich-Schwobel barrier differences for oxygen diffusion on stepped surfaces.
Article
Chemistry, Physical
Dongxiang Wu, Yaguang Zhu, Weitao Shan, Jianyu Wang, Qianqian Liu, Guangwen Zhou
Summary: This study reports the formation of a metastable Cu-O/OH superstructure during the reaction of hydrogen with oxygen-covered Cu(110) and elucidates the reaction pathways leading to its formation. These findings reveal the complex surface dynamics resulting from parallel reaction pathways and suggest the possibility of directing the reaction dynamics by manipulating transient surface structure and composition.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Minhui Lee, Emiko Kazuma, Jaehoon Jung, Michael Trenary, Yousoo Kim
Summary: A detailed understanding of the dissociation of O-2 molecules on metal surfaces is crucial for controlling oxidation reactions and developing catalysts. Single-molecule studies using a scanning tunneling microscope provide fundamental insights into the excitation pathway for dissociation reactions.
Article
Chemistry, Physical
Axel Belser, Katharina Greulich, Peter Gruninger, Reimer Karstens, Ruslan Ovsyannikov, Erika Giangrisostomi, Peter Nagel, Michael Merz, Stefan Schuppler, Thomas Chasse, Heiko Peisert
Summary: The interface properties of CoPcF16 on Cu(110) and Cu(110)-(2 x 1)O were investigated using XPS, UPS, XAS, and STM techniques. Charge transfer from both substrates to the central Co ion of CoPcF16 was observed, with a partial suppression of the interaction between CoPcF16 molecules and the Cu(110) substrate by oxygen termination. Additionally, bidirectional charge transfer involving the macrocycle of CoPcF16 molecules was concluded.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Review
Chemistry, Multidisciplinary
Hiro Minamimoto, Ruifeng Zhou, Tomohiro Fukushima, Kei Murakoshi
Summary: In this paper, phenomena of unique electronic excitations were reviewed from the perspective of surface-enhanced Raman scattering (SERS) spectroscopy at electrified interfaces. The detailed investigations of the well-defined system provided information on the electronic excitation processes. The paper explored novel ways for further precise tuning of light-matter interactions.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Chemistry, Physical
Zhengrong Zhang, Yuhua Yang, Wenjuan Li, Wei Zhang, Minmin Liu, Zhe Weng, Shengjuan Huo, Jiujun Zhang
Summary: This study introduces a new method to improve carbon monoxide production through the interaction of metal oxides, utilizing the synergistic effect between CO2-selective metal materials and CO2-to-hydrogen oxide materials. The stable *COOH intermediate formed by Cu and Sb2O3 promotes CO selectivity, while also destabilizing the intermediate for H-2 evolution.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Yanli Li, Dengning Chen, Zhongpu Fang, Hegen Zhou, Jia Zhu, Yi Li, Shuping Huang, Wei Lin, Yongfan Zhang
Summary: First-principles calculations were used to investigate the reaction mechanisms of CO2 conversion to methanol over supported copper clusters. The adsorption and migration of hydrogen atoms were found to significantly impact the catalytic activity. The size of the cluster was found to influence the rate-limiting steps and the formate pathway was favored on large copper clusters.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Chemistry, Physical
Djuro Bikaljevic, Samuel Kerschbaumer, Norbert Memmel
Summary: The growth of Zn on Cu(110) was studied with and without the influence of oxygen. It was observed that oxidation of Zn films at higher temperatures led to the formation of ill-ordered clusters of oxidized zinc, with the Cu(110) substrate also becoming oxidized. Deposition of Zn onto a partly oxidized striped Cu(110) surface resulted in partial destruction of CuO stripes, formation of ZnOx clusters, and growth of Zn nanowires.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Xueping Qin, Tejs Vegge, Heine Anton Hansen
Summary: The study investigates CO2 activation at the Au-water interfaces by introducing K+ cations, constructing an electrochemical environment for exploring CO2 adsorption/desorption reactions from the atomic level, and reveals that CO2 adsorption is activated by the first-electron transfer.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
I Leonov, S. Biermann
Summary: By studying the electronic structure, magnetic properties, and surface energies of the (001) and (110) surfaces of NiO, we reveal a complex interplay between electron-electron correlations and surface effects, with a potential higher catalytic activity on the (110) NiO surface compared to the (001) NiO surface. Our results also demonstrate a novel form of electronic order stabilized by strong correlations on the (110) NiO surface.
Article
Chemistry, Physical
Tianren Li, Mingyu Li, Jingjing Jiang, Ziqing Zhao, Zhongxu Li, Chunrui Zhao, Xinyu Wang, Shuangshi Dong
Summary: A CuO and Cu-doped ZnO S-scheme heterojunction was constructed using Cu-ZIF-8 as precursor, which exhibited outstanding catalytic activation performance and broad-spectrum degradation capacity. The catalyst/visible light/PMS composite reaction system showed remarkable mineralization and anti-interference ability, and is environmentally friendly. The interaction of Cu/Zn bimetallic sites realized effective utilization of PMS and accelerated PMS activation, promoting the formation of highly oxidative SO5 & BULL;. This study provides new systematic insights on PMS activation by Cu/Zn bimetallic oxide S-scheme heterojunction and is significant for sewage purification.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Marie S. Saettele, Andreas Windischbacher, Katharina Greulich, Larissa Egger, Anja Haags, Hans Kirschner, Ruslan Ovsyannikov, Erika Giangrisostomi, Alexander Gottwald, Mathias Richter, Serguei Soubatch, F. Stefan Tautz, Michael G. Ramsey, Peter Puschnig, Georg Koller, Holger F. Bettinger, Thomas Chasse, Heiko Peisert
Summary: Hexacene, an organic semiconductor material, shows superior electronic properties. The study reveals distinct differences in the structure and electronic properties of hexacene monolayers on Ag(110) and Cu(110) substrates.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Review
Chemistry, Multidisciplinary
Shaoquan Li, Yingnan Wang, Yue Du, Xiao-Dong Zhu, Jian Gao, Yong-Chao Zhang, Gang Wu
Summary: Electrochemical nitrogen reduction reaction (NRR) to ammonia (NH3) using renewable electricity is a promising approach towards carbon neutrality and a potential alternative to the traditional Haber-Bosch route. The development of efficient electrocatalysts with high selectivity and stability, particularly P-block metal-based catalysts, is crucial for successful NRR. These catalysts exhibit a strong interaction with N 2p orbitals, leading to good selectivity for NRR to NH3. In this review, we discuss the recent progress, activity, selectivity, and stability of P-block metal-based electrocatalysts for NRR, as well as catalyst design, active site nature, strategies for enhancing NRR performance, reaction mechanism, and operating conditions. Challenges and future prospects of using P-block metal-based electrocatalysts are also proposed.
Article
Chemistry, Physical
Zhengming Hao, Guyue Peng, Lina Wang, Xuechao Li, Ye Liu, Chaojie Xu, Kaifeng Niu, Honghe Ding, Jun Hu, Liang Zhang, Bin Dong, Haiming Zhang, Junfa Zhu, Lifeng Chi
Summary: In this study, we achieved the controlled activation of C(sp(3))-H bonds at low temperature using a surface synthesis strategy. This enabled efficient transformation of n-alkanol to conjugated polyenal with a lower activation barrier.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Multidisciplinary Sciences
Erik C. Nykwest, Dennis Trujillo, S. Pamir Alpay
Summary: The study demonstrates that inducing magnetism at alumina surfaces can be achieved through doping with 3d transition metals, resulting in different levels of spin magnetic moments. All dopants except Sc produce magnetic moments concentrated at the surface with varying degrees of delocalization. By judiciously doping with select 3d transition metals, the surface of alumina can be made magnetic, potentially enabling novel applications in data storage, catalysis, and biomedical engineering.
SCIENTIFIC REPORTS
(2021)