Article
Thermodynamics
M. A. Popov, I. V. Kochetov, A. Y. Starikovskiy, N. L. Aleksandrov
Summary: The experimental investigation of plasma decay in the afterglow of a repetitively pulsed nanosecond discharge in a stoichiometric propane-oxygen mixture revealed non-monotonic behavior of the decay rate with increasing degree of propane oxidation. Numerical simulations and measurements showed that the formation of cluster ions in the discharge afterglow played a fundamental role in plasma decay, with electron recombination controlled by hydrocarbon cluster ions at low oxidation degrees of propane and water cluster ions at high oxidation degrees. The hypothesis proposed to explain the observed behavior of plasma decay rate with propane oxidation was based on the formation of hydrated hydrocarbon ions at moderate oxidation degrees.
COMBUSTION AND FLAME
(2021)
Article
Chemistry, Multidisciplinary
Yehong Wang, Zhixin Zhang, Lijun Lei, Wen Liu, Shuyan Du, Xiangxue Zhu, Xiujie Li, Feng Wang
Summary: By controlling the defect concentrations of ceria supports over FeNi/ceria catalysts, selective C-H/C-C bond cleavage of propane with CO2 as the oxidant was achieved. Different defect concentrations in ceria supports led to distinct propane conversion selectivities, offering a new approach for the selective conversion of CO2 and alkanes.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
Sizhe Wang, Yi Wang, Yaochen Song, Xiaohua Jia, Jing Yang, Yong Li, Jiaxuan Liao, Haojie Song
Summary: Immobilizing polysulfides through oxygen vacancy engineering in W18O49 is crucial for developing commercially usable Li-S batteries.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Physical
Ethan P. Kamphaus, Perla B. Balbuena
Summary: Lithium sulfur batteries are promising next-generation technology that can meet various demands of modern society, but they face unique challenges related to the polysulfide shuttle effect and the design of a solid electrolyte interphase (SEI). A study has shown that nucleation of Li2S phase stabilizes reduction products of Li2S8, enhancing the reduction capacity of polysulfides.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Ceramics
G. Krishna Priya, S. Yusub, A. Ramesh Babu, N. Sree Ram, K. Rama Krishna, V Aruna
Summary: A multi-component glass system 65B(2)O(3)-20Bi(2)O(3)-10Al(2)O(3)-(5-x)MgO-xCuO was fabricated using the melt quench mechanism. X-ray diffraction confirmed the amorphous nature of the specimens, while Fourier transform infrared studies revealed bands associated with borate and bismuth groups. The optical band gap of the glasses decreased gradually with an increase in CuO content, and the sample doped with 1 mol% CuO showed the highest conductivity in dielectric studies.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Multidisciplinary
Yutao Rao, Ling Xu, Mingbo Zhou, Bangshao Yin, Atsuhiro Osuka, Jianxin Song
Summary: The one-pot self-coupling reaction of 3-amino-5-bromo-BODIPY 9 under Buchwald-Hartwig amination conditions gave nitrogen-bridged cyclic BODIPY tetramer 10, pentamer 11, and hexamer 12. Oxidation of 10, 11, and 12 in the presence of alkali metal ions provided 13, 15, and 16, respectively, as the first examples of expanded azaporphyrins possessing more than six pyrrole rings. 13, 14, and 15 show diatropic ring currents as a result of global aromaticity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Materials Science, Ceramics
Yin Zhang, Wei Zhu, Hao Xu, Yubo Wu, Yuhan Zou
Summary: 24ZnF2-(47-x)B2O3-18Bi2O3-10ZnO-xEr2O3-1Yb2O3 (FBZEY) fluorine bismuth borate glass with good thermal stability was prepared. The effect of doped rare earth ions on the glass structure was studied using infrared spectroscopy. High energy emission photons can be obtained by low energy excitation sources. Fluorescence decay analysis showed that the fluorescence lifetime increased with the concentration of doped rare earth ions.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Nanoscience & Nanotechnology
Haval Kareem, Yazan Maswadeh, Zhi-Peng Wu, Asher C. Leff, Han-Wen Cheng, Shiyao Shan, Shan Wang, Richard Robinson, Dominic Caracciolo, Alex Langrock, David M. Mackie, Dat T. Tran, Valeri Petkov, Chuan-Jian Zhong
Summary: This study investigates the details of a ternary nanoalloy under propane oxidation conditions using high-energy synchrotron X-ray diffraction and diffuse reflectance infrared Fourier transform spectroscopy. The results reveal that subtle differences in phase structure and surface activity changes correlate with the Ni-composition-dependent catalytic activity of the nanoalloys, shedding light on the design of oxidation catalysts with enhanced activities.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Nan Shen, Hongxu Sun, Boya Li, Baojuan Xi, Xuguang An, Jingfa Li, Shenglin Xiong
Summary: This review discusses the application of dual-functional hosts in lithium-sulfur batteries and summarizes the recent research progress. It provides an overview of the challenges in lithium-sulfur batteries and the strategies using dual-functional hosts. The latest advances and mechanisms of various dual-functional hosts for both cathode and anode are catalogued, along with the theoretical calculation tools. Finally, several future perspectives for fundamental research and practical development are proposed.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Geochemistry & Geophysics
Martin Reyes, Edgar Martinez Rojo, Ramiro Escudero, Francisco Patino, Ivan A. Reyes, Mizraim U. Flores, Miguel Perez, Julio Juarez, Francisco Raul Barrientos
Summary: This study analyzed the flotation and depression of arsenopyrite using different ions and chemicals, and determined the optimal conditions and methods through experimental results.
Article
Chemistry, Physical
Pan Zeng, Cheng Yuan, Jiao An, Xiaofei Yang, Chen Cheng, Tianran Yan, Genlin Liu, Ting-Shan Chan, Jun Kang, Liang Zhang, Xueliang Sun
Summary: The study proposes a strategy using reactive Li2S and bidirectional Fe3C electrocatalyst to achieve fast and continuous conversion of sulfur species, enhancing the performance of Li-S batteries. Fe3C plays a role in both reduction and oxidation processes, maintaining high catalytic activity and enabling stable operation of Li-S batteries over a wide temperature range.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Physical
Guangchao Li, Huajun Guo, Zhixing Wang, Guochun Yan, Jiexi Wang, Xinhai Li
Summary: This study utilized a salt-template strategy to prepare potassium-induced porous graphitic carbon flakes (PPGCs) with high surface area and porous structure. In lithium-ion hybrid supercapacitors, PPGCs showed superior electrochemical performance, rate performance, and excellent long-term cycling stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Optics
Yueyue Lian, Wenlong Tian, Hao Sun, Yang Yu, Yulong Su, Hui Tong, Jiangfeng Zhu, Zhiyi Wei
Summary: We investigated a high-efficiency, widely tunable femtosecond optical parametric oscillator (OPO) based on a multi-period MgO-doped periodically poled lithium niobite (MgO: PPLN) crystal. The OPO generated 2.68 W of signal power at 1540 nm and 1.2 W of idler power at 3110 nm, with a total conversion efficiency of 67.4% using a 6 W pump power. The grating period and working temperature were adjusted to achieve a broad optical spectrum range for tunable signals and idlers.
Article
Chemistry, Multidisciplinary
Matteo Signorile, Elisa Borfecchia, Silvia Bordiga, Gloria Berlier
Summary: This paper analyzes the influence of Al distribution, zeolite topology, ligands/reagents, and oxidation state on ions mobility in Cu-zeolites, and its impact on the reactivity of metal sites. The mobility of Cu ions has been observed in the presence of ammonia, enabling the activation of oxygen and providing a new perspective on the chemistry of zeolite-based catalysts. The different mobility of Cu+/Cu2+ ions, even in the absence of ligands, has important implications for the formation of Cu-oxo species and their activity in relevant reactions.
Article
Chemistry, Physical
Shaonan Gu, Bingjie Liu, Yue Jiang, Hongda Li, Yinan Wang, Yinglu Gao, Yongqiang Ren, Guowei Zhou
Summary: This research proposes a solution to the problem of active material loss and capacity decay in lithium-sulfur batteries by rationally designing dual-component catalysts for efficient lithium polysulfide conversion in nitrogen-doped carbon materials.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Heikki Harju, Juha Lehtonen, Leon Lefferts
APPLIED CATALYSIS B-ENVIRONMENTAL
(2016)
Article
Chemistry, Physical
Marijana Kovacevic, Barbara L. Mojet, Jan G. van Ommen, Leon Lefferts
Article
Chemistry, Applied
T. S. Nguyen, S. He, L. Lefferts, G. Brem, K. Seshan
Article
Chemistry, Applied
Roger Brunet Espinosa, Damon Rafieian, Rob G. H. Lammertink, Leon Lefferts
Article
Thermodynamics
T. J. Taha, L. Lefferts, T. H. van der Meer
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2016)
Review
Chemistry, Physical
I. Coronado, M. Stekrova, M. Reinikainen, P. Simell, L. Lefferts, J. Lehtonen
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2016)
Article
Chemistry, Applied
E. I. Kauppi, K. Honkala, A. O. I. Krause, J. M. Kanervo, L. Lefferts
TOPICS IN CATALYSIS
(2016)
Article
Chemistry, Physical
Roger Brunet Espinosa, Leon Lefferts
Article
Chemistry, Physical
Andrey S. Bazhenov, Leon Lefferts, Karoliina Honkala
JOURNAL OF PHYSICAL CHEMISTRY C
(2017)
Article
Chemistry, Physical
Guido Giammaria, Gerard Van Rooij, Leon Lefferts
Article
Chemistry, Physical
Cassia Boyadjian, Leon Lefferts
Article
Chemistry, Physical
Kevin H. R. Rouwenhorst, Leon Lefferts
Article
Chemistry, Applied
Yingnan Zhao, Wanwei Liang, Yongdan Li, Leon Lefferts
Article
Chemistry, Applied
Kamila Koichumanova, Aura Visan, Bert Geerdink, Rob G. H. Lammertink, Barbara L. Mojet, K. Seshan, Leon Lefferts
Article
Chemistry, Physical
A. M. Perez-Coronado, L. Calvo, J. A. Baeza, J. Palomar, L. Lefferts, J. J. Rodriguez, M. A. Gilarranz
APPLIED CATALYSIS A-GENERAL
(2017)