Article
Nanoscience & Nanotechnology
Jian-Rong Li, Wan-Peng Zhang, Junyi Zhao, Mingjiao Tian, Kun Wu, Hang Xiao, Chi He
Summary: This study found that modulating and accelerating the rate limiting step by Al substitution, rather than just mixing Mn and Al, can enhance the catalytic activity and stability of Mn-Al oxides in acetone oxidation. The findings provide new insights into engineering catalysts for efficient and economical mineralization of industrial VOCs.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Haiting Cai, Ya-Huei Cathy Chin
Summary: The kinetic assessments of cydohexene and pyridine hydrogenation on metallic Pd and Pt surfaces covered with chemisorbed sulfur species provide insight into the catalytic involvement of sulfur in H-addition events. The distribution of irreversible and reversible sulfur species on surfaces influences the hydrogenation reactivity towards pyridine under different conditions.
Article
Nanoscience & Nanotechnology
Longwen Chen, Tan Li, Jun Zhang, Jing Wang, Peirong Chen, Mingli Fu, Junliang Wu, Daiqi Ye
Summary: The study reveals that surface-adsorbed oxygen plays a crucial role in promoting soot combustion on Ag/Co3O4 catalysts, while the activity contribution of bulk lattice oxygen is negligible.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Biochemistry & Molecular Biology
Quan V Vo, Nguyen Thi Hoa, Nguyen Minh Thong, Adam Mechler
Summary: The study found that anthocyanidins have high HOO· scavenging activity in water but weak activity in lipid medium. In water at pH = 7.4, the anion states and single electron transfer mechanism play a dominant role in the scavenging activity of anthocyanidins.
Article
Engineering, Environmental
Yarong Fang, Huijuan Li, Qi Zhang, Chenyang Wang, Jue Xu, Huan Shen, Ji Yang, Chuanqi Pan, Yuhua Zhu, Zhu Luo, Yanbing Guo
Summary: This study investigates the different catalytic mechanisms of C3H6 and C3H8 combustion through experiments and theoretical calculations, revealing the role of surface oxygen vacancies. It provides insights for the rational design of highly efficient catalysts for activating the C=C bond in alkene or CH bond in alkane.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Ali Raza, Shanza Rauf Khan, Sarmed Ali, Saba Jamil, Shamsa Bibi
Summary: A microgel catalytic system loaded with bimetallic nanoparticles was synthesized to reduce organic dyes and nitro compounds. The hybrid microgel was characterized using various techniques, revealing an average size of 139 nm and a polydispersity index of 0.313, indicating homogeneous dispersion of nanoparticles within the microgel. The synthesized hybrid microgels were used as catalysts for the reduction of various compounds, with CV, CR, and EBT showing the highest apparent rate constants.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Wanyu Deng, Peng Zhang, Brian Seger, Jinlong Gong
Summary: By investigating the pH dependency and kinetic isotope effect of CO2 electroreduction, the authors reveal that the rate-limiting step of CO2ER is mainly the adsorption of CO2. This finding is expected to provide guidance for improving CO2ER activity through strategies such as surface modification of catalysts and precise control of pressure and interfacial electric field within reactors.
NATURE COMMUNICATIONS
(2022)
Article
Physiology
Christopher B. Cooper, Alan Garfinkel
Summary: The kinetic response of oxygen uptake to transitions of exercise intensity is an important parameter of aerobic function. A novel geometric method is developed to determine the time constant of oxygen uptake using slopes and intercepts of a plot of cumulative oxygen uptake versus time, without requiring multiple repetitions of the exercise protocol.
JOURNAL OF APPLIED PHYSIOLOGY
(2022)
Article
Construction & Building Technology
Pedro Pinto Ferreira Brasileiro, Bruno Augusto Cabral Roque, Yana Batista Branda, Attilio Converti, Mohand Benachour, Leonie Asfora Sarubbo
Summary: Cement is widely used globally, but lack of maintenance in concrete structures increases the risk of collapse. This study explores the use of biomineralizing bacteria to recover structures, with promising results indicating an eco-friendly option to reduce greenhouse gas emissions.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Energy & Fuels
Theodoros Papalas, Evangelos Palamas, Andy N. Antzaras, Angeliki A. Lemonidou
Summary: This study successfully synthesized bimetallic Ni-Co oxygen carriers with ZrO2 as a structure stabilizer using a one-pot sol-gel auto-combustion method. The redox properties and catalytic activity of the reduced state were evaluated, showing that the reduced bimetallic materials exhibited higher reforming activity and stability compared to monometallic materials, with Co addition promoting the oxidation kinetics.
Article
Chemistry, Physical
Minhui Lee, Emiko Kazuma, Chi Zhang, Michael Trenary, Jun Takeya, Jaehoon Jung, Yousoo Kim
Summary: The dissociation of O-2 molecules chemisorbed on silver surfaces has been studied at the single-molecule level on Ag(110) using a scanning tunneling microscope (STM). The dissociation reaction was predominantly triggered by inelastically tunneled holes from the STM tip, influenced by the significantly distributed density of states below the Fermi level of the substrate. Action spectroscopy with the STM and density functional theory calculations revealed that direct ladder-climbing excitation of high-order overtones of the O-O stretching mode, enhanced by molecule-surface interactions, is the cause of the O-2 dissociation reaction.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Biochemistry & Molecular Biology
Aleksandra Marsavelski, Janez Mavri, Robert Vianello, Jernej Stare
Summary: Simulations clarify the selectivity of MAO-B towards histamine and N-methylhistamine, showing that solvation effects and the catalytic environment in the enzyme play crucial roles in governing the reactivity of these compounds.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
Rachel Martin, Jovenal Jamir, Minkyu Kim, Christopher J. Lee, Vikram Mehar, Aravind Asthagiri, Jason F. Weaver
Summary: In this study, the catalytic activity of Ir(100) and IrO2 (110) for methane oxidation was investigated using AP-XPS measurements and DFT calculations. It was found that IrO2 (110) is highly active for methane oxidation, while Ir(100) is inactive under the same conditions.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Physiology
Bernard Korzeniewski
Summary: Simulations using a computer model suggest that the slow decrease in VO2 during the second step of two-step incremental exercise can be explained by a decrease in oxidative phosphorylation stimulation and/or an increase in glycolysis stimulation in skeletal muscles. This may be due to the recruitment of more glycolytic fibers or metabolic regulation in already recruited fibers. These predictions can be tested experimentally. No additional data are available.
RESPIRATORY PHYSIOLOGY & NEUROBIOLOGY
(2023)
Review
Chemistry, Physical
Tobias Binninger, Piotr M. Kowalski, Michael H. Eikerling
Summary: This review provides an overview of recent progress in OER electrocatalysis, with a specific focus on computational studies that explicitly considered the elementary step of O2 desorption. It highlights the computational and methodological complexities that led to the neglect of this step in previous studies.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Rui Serra-Maia, Marion Bellier, Stephen Chastka, Kevin Tranhuu, Andrew Subowo, J. Donald Rimstidt, Pavel M. Usov, Amanda J. Morris, F. Marc Michel
ACS APPLIED MATERIALS & INTERFACES
(2018)
Article
Chemistry, Multidisciplinary
Noelia Rubio, Rui Serra-Maia, Houmam Kafa, Kuo-Ching Mei, Khuloud T. Al-Jamal, William Luckhurst, Mire Zloh, Frederic Festy, Jonathan P. Richardson, Julian R. Naglik, Elzbieta Pach, Belen Ballesteros
Article
Chemistry, Physical
Rui Serra-Maia, F. Marc Michel, Yijin Kang, Eric A. Stach
Article
Chemistry, Physical
Rui Serra-Maia, F. Marc Michel, Temple A. Douglas, Yijin Kang, Eric A. Stach
Summary: Multivariate statistical analysis of 137 laboratory experiments showed that gold-palladium nanocatalysts facilitate the formation of methanol from methane, while reducing H2O2 concentration below 2.5 x 10(-5) mol/L can significantly reduce overuse and increase methanol selectivity.
Article
Nanoscience & Nanotechnology
Min Wang, Andrew C. Meng, Jintao Fu, Alexandre C. Foucher, Rui Serra-Maia, Eric A. Stach, Eric Detsi, James H. Pikul
Summary: The authors synthesized nanoporous gold catalysts with increased (100) surface facets using electrochemical dealloying, which achieved higher operating voltage and power density in aluminum-air batteries compared to traditionally prepared nanoporous gold. The improved catalytic activity of the citrate dealloyed nanoporous gold was demonstrated through various studies, showing potential for low-cost and mass production of metal-air battery cathodes.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Rui Serra-Maia, Pawan Kumar, Andrew C. Meng, Alexandre C. Foucher, Yijin Kang, Khim Karki, Deep Jariwala, Eric A. Stach
Summary: Liquid-cell scanning/transmission electron microscopy (S/TEM) has been used to study nanostructure nucleation and growth, electrochemistry, and corrosion. By generating a gas bubble during electrochemical water splitting, the thickness of the liquid can be reduced to allow for atomic-scale analysis. This method enables multi-modal, nanoscale understanding of solid-state samples in liquid media.
Article
Chemistry, Physical
Rui Serra-Maia, Christopher Winkler, Mitsushiro Murayama, Kevin Tranhuu, F. Marc Michel
ACS APPLIED ENERGY MATERIALS
(2018)