Article
Chemistry, Multidisciplinary
Aniruddha Dey, Jesse B. Gordon, Therese Albert, Sinan Sabuncu, Maxime A. Siegler, Samantha N. MacMillan, Kyle M. Lancaster, Pierre Moenne-Loccoz, David P. Goldberg
Summary: A new nonheme iron(II) complex was reported, which reacts with NO(g) to form a stable mononitrosyl complex. The mononitrosyl complex exhibits highly activated characteristics and can rapidly convert to N2O in the absence of an exogenous reductant.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Environmental
Li-Kun Wang, Xueming Chen, Wei Wei, Qiuxiang Xu, Jing Sun, Giorgio Mannina, Lan Song, Bing-Jie Ni
Summary: This study found that both NO reductase and N2O reductase were inhibited at Fe(II)EDTA-NO concentration up to 20 mM, leading to N2O accumulation and enhanced N2O recovery efficiency. Under carbon-limiting conditions, N2O accumulation was further increased. Long-term experiments also revealed that Fe(II)EDTA-NO reduced microbial diversity and enriched Pseudomonas, which could be a typical microbe for NO-based denitrification technology.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Alyson E. Santoro, Carolyn Buchwald, Angela N. Knapp, William M. Berelson, Douglas G. Capone, Karen L. Casciotti
Summary: Marine oxygen deficient zones are dynamic areas of microbial nitrogen cycling, with nitrification playing a key role. Depth-integrated inventories of ammonium and nitrite were positively correlated with depth-integrated primary production, while ammonia oxidation rates were undetectable in trap-collected sinking particulate material. N2O concentrations in the upper oxycline reached values of >140 nM, supporting potentially higher air-sea fluxes of N2O in the offshore Eastern Tropical South Pacific than previously estimated.
GLOBAL BIOGEOCHEMICAL CYCLES
(2021)
Article
Chemistry, Physical
Yulin Zhou, Francois Bihl, Antoine Bonnefont, Corinne Boudon, Laurent Ruhlmann, Vasilica Badets
Summary: This paper investigates the influence of charge and redox potential of polyoxometalates (POMs) on the electrochemical reduction of nitrite or nitrous acid. The study reveals a correlation between gaseous products and the redox properties of the POMs. The pH value and proton concentration in solution also affect the reaction rate.
JOURNAL OF CATALYSIS
(2022)
Article
Geosciences, Multidisciplinary
Steffen Buessecker, Hiroshi Imanaka, Tucker Ely, Renyu Hu, Stephen J. Romaniello, Hinsby Cadillo-Quiroz
Summary: Research suggests that mineral catalysts could have played a role in the early nitrogen cycle of the Archaean, by facilitating the reduction of nitrite to nitric oxide and nitrous oxide. This process may have been beneficial for the development of early microbial life.
Article
Multidisciplinary Sciences
Wei Xiong, Xiang-Kui Gu, Zhenhua Zhang, Peng Chai, Yijing Zang, Zongyou Yu, Dan Li, Hui Zhang, Zhi Liu, Weixin Huang
Summary: The study successfully utilized 27 nm-sized cubic Cu2O nanocrystals as catalysts for propylene epoxidation, achieving a propylene oxide selectivity of over 80%. The reaction occurring at the {110} edge sites reduced the reaction temperature and increased propylene oxide selectivity, highlighting the importance of catalyst design for enhancing selectivity in propylene epoxidation reactions.
NATURE COMMUNICATIONS
(2021)
Review
Chemistry, Multidisciplinary
Dongfeng Du, Zhuo Zhu, Kwong-Yu Chan, Fujun Li, Jun Chen
Summary: Rechargeable lithium-oxygen batteries have high potential as energy storage devices, but their performance is hindered by slow oxygen reduction and evolution reactions at the cathodes. Introducing light into the batteries can improve reaction kinetics, but the understanding of this process is limited. This tutorial review summarizes recent findings on photoinvolved Li-O-2 batteries and discusses the challenges and prospects, considering the interdisciplinary nature of the field.
CHEMICAL SOCIETY REVIEWS
(2022)
Article
Multidisciplinary Sciences
Jingwen Ke, Jiankang Zhao, Mingfang Chi, Menglin Wang, Xiangdong Kong, Qixuan Chang, Weiran Zhou, Chengxuan Long, Jie Zeng, Zhigang Geng
Summary: This study develops an efficient Ag3PO4 electrocatalyst for the electrooxidation of propylene into propylene oxide. The (100) facets of Ag3PO4 cubes exhibit the highest yield rate and lowest energy barrier, making them the most ideal catalyst.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Ivan Surin, Zhenchen Tang, Julian Geiger, Suyash Damir, Henrik Eliasson, Mikhail Agrachev, Frank Krumeich, Sharon Mitchell, Vita A. Kondratenko, Evgenii V. Kondratenko, Gunnar Jeschke, Rolf Erni, Nuria Lopez, Javier Perez-Ramirez
Summary: The discovery of low-valent manganese stabilized on ceria as a stable catalyst for ammonia oxidation to nitrous oxide offers a promising solution to the high manufacturing costs and suboptimal selectivity and stability of nitrous oxide synthesis. The catalyst exhibits higher productivity than state-of-the-art alternatives and establishes a structure-performance relationship.
ADVANCED MATERIALS
(2023)
Article
Engineering, Environmental
Cheng Cheng, Jian Zhang, Qiang He, Haiming Wu, Yi Chen, Huijun Xie, Spyros G. Pavlostathis
Summary: This study found that under anoxic conditions, the consumption of N2O can drive the oxidation of CH4, mainly mediated by methanotrophs in the microbial community. The research reveals the potential mechanisms of N2O-driven CH4 oxidation and highlights the significant role of methanotrophs in carbon and nitrogen cycles.
Article
Soil Science
Qinqin Hao, Oumei Wang, Jian-Yu Jiao, Leilei Xiao, Yuezhi Zhang, Wen-Jun Li, Fanghua Liu
Summary: Through experiments and pure culture, this study reveals the synergistic relationship between aerobic methanotrophs and nitrous oxide production in hypoxic soil, highlighting the important role of these microorganisms in linking methane sinks and nitrous oxide sources in oxygen-limited environments.
SOIL BIOLOGY & BIOCHEMISTRY
(2022)
Article
Chemistry, Physical
Han Zhao, Hongcheng Li, Yuanlong Tan, Tianzhi Liu, Huifeng Zhang, Qingde Zhang, Hangrong Chen, Yunkun Zhao, Xiao Yan Liu
Summary: The mixing-calcination-aging strategy can enhance the catalytic performance and oxygen storage capacity of three-way catalysts, but it leads to a transient drop in conversion rate, which is caused by the reduction of PdO.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Geosciences, Multidisciplinary
Weiyi Tang, Amal Jayakumar, Xin Sun, John C. Tracey, Julia Carroll, Elizabeth Wallace, Jenna A. Lee, Levy Nathan, Bess Ward
Summary: The study found that N2O consumption rates are high in the seasonally anoxic environment of Chesapeake Bay, but generally undetectable in oxygenated waters. However, when the oxygen concentration was reduced in oxygenated samples, N2O consumption rates increased significantly, indicating the potential for N2O consumption in oxygenated environments. These new observations provide insights into N2O cycling processes and can be used to improve the modeling of N2O flux in estuaries.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Engineering, Environmental
Xin Zou, Yun Zhou, Mengjiao Gao, Sen Yang, Abdul Mohammed, Yang Liu
Summary: This study effectively suppressed N2O emissions in the treatment of ammonia rich wastewater by altering the frequency of aerobic/anoxic phases. Increasing the number of aerobic phases resulted in a significant reduction of N2O emissions. Aerobic phases contributed more to the total N2O emissions compared to anoxic phases. Furthermore, N2O emissions were positively correlated with nitrite accumulation and negatively correlated with the nosZ/(nirK+nirS) gene ratio.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Biotechnology & Applied Microbiology
Banda Yeny, Texier Anne-Claire, Cuervo-Lopez Flor de Maria
Summary: The study showed that denitrification can be conducted using AMP as an electron donor, but at lower specific rates. At high concentrations of AMP, the production of N2O and carbon intermediates was detected.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Chemistry, Physical
M. Bendrich, A. Scheuer, R. E. Hayes, M. Votsmeier
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
Chemistry, Physical
Elifkuebra Oezkan, Pascal Cop, Felix Benfer, Alexander Hofmann, Martin Votsmeier, Juan M. Guerra, Marcel Giar, Christian Heiliger, Herbert Over, Bernd M. Smarsly
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Chemistry, Applied
M. Bendrich, A. Scheuer, M. Votsmeier
Summary: The study compared a mechanistic model and a global model in predicting NOx conversion rates, with the mechanistic model showing better performance in colder cycles due to its consideration of nitrates. Both models performed similarly in hotter cycles as no ammonium nitrate accumulates at high temperatures. Despite the additional complexity in the mechanistic model, simulation times remained comparable. Additionally, a simple NH3 dosing strategy was found to increase NOx conversion rates, demonstrating the model's utility in optimizing catalyst potential during driving cycles.
Article
Engineering, Chemical
Igor Belot, David Vidal, Martin Votsmeier, Robert E. Hayes, Francois Bertrand
CHEMICAL ENGINEERING SCIENCE
(2020)
Article
Chemistry, Multidisciplinary
Elifkubra Oezkan, Felix Badaczewski, Pascal Cop, Sebastian Werner, Alexander Hofmann, Martin Votsmeier, Heinz Amenitsch, Bernd M. Smarsly
Article
Chemistry, Physical
Andreas M. Gaenzler, Benjamin Betz, Sina Baier-Stegmaier, Stephanie Belin, Valerie Briois, Martin Votsmeier, Maria Casapu
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Review
Chemistry, Physical
Abhaya K. Datye, Martin Votsmeier
Summary: This review discusses the use, synthesis routes, and materials of exhaust emissions catalysts, as well as the challenges faced in the field. New material concepts include single-atom catalysts, two-dimensional materials, three-dimensional structures, but they need to overcome various challenges before being applied to exhaust treatment in cars and trucks.
Article
Engineering, Environmental
Igor Belot, David Vidal, Robert Greiner, Martin Votsmeier, Robert E. Hayes, Francois Bertrand
Summary: The impact of catalyst distribution within the porous wall of a coated gasoline particulate filter on its catalytic performance is significant. Improvements in catalytic conversion and washcoat effectiveness are observed when the washcoat distribution is uniform, but the benefits are limited to the transitional regime.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Igor Belot, Yixun Sun, David Vidal, Martin Votsmeier, Philippe Causse, Francois Trochu, Francois Bertrand
Summary: The study proposes an experimental magnified twin approach based on kinematic similarity to characterize the permeability of printed magnified porous wall sections, presenting comparisons between numerical, semi-analytical, and experimental predictions on the impact of coating amount and degree of uniformity on wall permeability. Despite the sensitivity of permeability to pore space characteristics, a good agreement between simulations and experiments is reported, indicating the potential of the proposed method in porous media applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Elifkubra Ozkan, Alexander Hofmann, Martin Votsmeier, Wu Wang, Xiaohui Huang, Christian Kuebel, Felix Badaczewski, Kevin Turke, Sebastian Werner, Bernd M. Smarsly
Summary: This study investigated the pore structure of a mesoporous cerium oxide material, revealing that it maintains stable mesoporosity at high temperatures and has potential applications in high-temperature catalysis. Various characterization techniques were used to elucidate the structural evolution from heat treatment to aging, showing that the 3D spatial arrangement of primary particles plays a key role in the thermal stability of the hierarchical mesopore structure.
Article
Engineering, Chemical
Florian Maurer, Andreas Gaenzler, Patrick Lott, Benjamin Betz, Martin Votsmeier, Stephane Loridant, Philippe Vernoux, Vadim Murzin, Benjamin Bornmann, Ronald Frahm, Olaf Deutschmann, Maria Casapu, Jan-Dierk Grunwaldt
Summary: The study found that reductive pulse activation leads to an increase in overall catalyst activity and the generation of different particle size zones within the catalyst bed. Activation temperature and pulse length influence the noble metal particle size, and this activation method could potentially be applied to industrially relevant catalysts in the future.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Engineering, Chemical
Michelle Bendrich, Bastian Opitz, Alexander Scheuer, Robert E. Hayes, Martin Votsmeier
Summary: This paper compares the performance of two catalytic systems for removing nitrogen oxides from automotive exhaust using SCR through computational simulation. The results show that adding an ammonia slip catalyst can reduce slip and increase NOx conversion, with benefits for dealing with different dosing situations.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Xiangxiao Kong, Kerry Chen, Robert Greiner, Martin Votsmeier, Igor Belot, David Vidal, Francois Bertrand, Robert E. Hayes, Jason S. Olfert
Summary: Gasoline particulate filters (GPFs) are effective in reducing particle emissions from gasoline direct injection (GDI) engines. This study examined the filtration efficiency and pressure drop of three GPFs with different in-wall washcoat volumes, finding that filtration efficiency is influenced by particle size, soot loading, and space velocity. The results indicate that coated filters have the highest filtration efficiency at high levels of soot accumulation, but also come with a higher rate of pressure drop increase compared to bare filters.
EMISSION CONTROL SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
Matthias Bonarens, Robert Greiner, Martin Votsmeier, David Vidal
Summary: An analytical model for the performance of clean polydisperse packed beds is derived based on classical packed bed filtration theory in this paper. The proposed model shows considerably better agreement with numerical simulation results compared to previous analytical models.
JOURNAL OF AEROSOL SCIENCE
(2022)
Article
Engineering, Chemical
Felix A. Doeppel, Martin Votsmeier
Summary: Machine learning can accelerate simulations of catalytic systems by interpolating precomputed solutions of rate equations. Interpolation quality is improved when reaction rates are mapped using logarithmic scaling. However, this method is limited to reaction systems that strictly maintain positive or negative source terms throughout the relevant conditions. A new approach is proposed to overcome this limitation by interpolating the forward and reverse rates of rate-determining reactions. The new method achieves higher accuracy compared to established approaches and outperforms spline interpolation in terms of interpolation time, storage space, and required training data.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Physical
Bolun Yu, Denan Li, Qianqian Zhu, Shufan Yao, Lifeng Zhang, Yanshuo Li, Zhenxin Zhang
Summary: This study successfully improved the catalytic activity of a zeolitic octahedral metal oxide by incorporating a single zinc species into its micropore. The zinc incorporation achieved a high ethane conversion rate and ethylene selectivity. Mechanism study showed that the isolated zinc site played a crucial role in activating oxygen and ethane, as well as stabilizing intermediates and transition states.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Ruoqi Liu, Hao Fei, Jian Wang, Ting Guo, Fangyang Liu, Zhuangzhi Wu, Dezhi Wang
Summary: This work successfully synthesized a high-performing S-enriched MoS2 catalyst for electrocatalytic nitrogen reduction reaction (NRR), demonstrating high activity and selectivity. The synergistic effect of the 1T phase and bridging S22- species was shown to play a positive role in NRR performances, and DFT calculations revealed the mechanism behind the improved performance.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Pan Xia, Lele Zhao, Xi Chen, Zhihong Ye, Zhihong Zheng, Qiang He, Ignasi Sires
Summary: This study presents a modified gas-diffusion electrode (GDE) for highly efficient and stable H2O2 electrosynthesis by using trace polymethylhydrosiloxane (PMHS). DFT calculations provide an in-depth understanding of the roles of PMHS functional groups.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Kwangchol Ri, Songsik Pak, Dunyu Sun, Qiang Zhong, Shaogui Yang, Songil Sin, Leliang Wu, Yue Sun, Hui Cao, Chunxiao Han, Chenmin Xu, Yazi Liu, Huan He, Shiyin Li, Cheng Sun
Summary: Different B-doped rGO catalysts were synthesized and their 2e- oxygen reduction reaction (ORR) performance was investigated. It was found that the 2e- ORR selectivity of B-doped rGO was influenced by the B content and oxygen mass transfer conditions. The synthesized catalyst exhibited high 2e- ORR selectivity and was capable of degrading organic pollutants continuously.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Li Lv, Lin Lei, Qi-Wen Chen, Cheng-Li Yin, Huiqing Fan, Jian-Ping Zhou
Summary: Monoclinic phase La2Ti2O7 and orthorhombic phase Bi4Ti3O12 are widely used in photocatalysis due to their layered crystal structure. The electronic structures of these phases play a crucial role in their photocatalytic activity. Heat treatment in a nitrogen atmosphere introduces more oxygen vacancies into the S-scheme heterojunction, leading to enhanced NO removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Choe Earn Choong, Minhee Kim, Jun Sup Lim, Young June Hong, Geon Joon Lee, Keun Hwa Chae, In Wook Nah, Yeomin Yoon, Eun Ha Choi, Min Jang
Summary: In this study, the synergistic effect between argon-plasma-system (AP) and catalysts in promoting the production of reactive species for water remediation was investigated. By altering the oxygen vacancies concentration of CeO2/Bi2O3 catalyst, the production of hydrated electrons was stimulated for PFOA removal. The results showed that the built-in electric field in the Bi/Ce0.43 interface enhanced electron migration and eaq- generation, leading to improved PFOA removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yushan Wu, Di Xu, Yanfei Xu, Xin Tian, Mingyue Ding
Summary: Efficient synthesis of primary amines from carbonyl compounds was achieved via reductive amination using Ru@NC-Al2O3 as a catalyst, exhibiting high activity and selectivity under mild conditions.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yilan Jiang, Peifang Wang, Tingyue Chen, Keyi Gao, Yiran Xiong, Yin Lu, Dionysios D. Dionysiou, Dawei Wang
Summary: By controlling the content of Co and Ni in Co1-xNixFe2O4, the production of O-1(2) from H2O2 can be regulated. NiFe2O4, with the lowest lattice distortion degree, can efficiently produce O-1(2) as the dominant reactive oxygen species. The system also exhibits significant resistance to water matrix interference.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Shuai Feng, Donglian Li, Hao Dong, Song Xie, Yaping Miao, Xuming Zhang, Biao Gao, Paul K. Chu, Xiang Peng
Summary: In this study, MoO2/Mo2N heterostructures were prepared by regulating the coordination of Mo atoms. The electrocatalyst exhibits high current density and excellent stability for hydrogen evolution reaction.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Jia-Cheng E. Yang, Min -Ping Zhu, Daqin Guan, Baoling Yuan, Darren Delai Sun, Chenghua Sun, Ming-Lai Fu
Summary: This study successfully modulated the electron configuration and spin state of millimetric metal catalysts by adjusting the support curvature radius. The electronic structure-oriented spin catalysis was found to affect the degradation of pollutants, providing new insights for the design and production of highly active, reusable, and stable catalysts.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Tao Zhong, Su Tang, Wenbin Huang, Wei Liu, Huinan Zhao, Lingling Hu, Shuanghong Tian, Chun He
Summary: In this study, a highly efficient photocatalyst for the elimination of CH3SH was developed by engineering different crystal facets and coupling them with PHI. Cu (111)/PHI exhibited the highest elimination efficiency and showed good stability and reusability. The enhanced surface electron pump effect and effective adsorption mechanisms were revealed through comprehensive characterizations and DFT calculations.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Feifei Yang, Tianyu Zhang, Jiankang Zhao, Wei Zhou, Nicole J. Libretto, Jeffrey T. Miller
Summary: A Ni3Sn intermetallic nano particle was found to have geometrically isolated Ni sites that could selectively cleave C-O bonds in biomass derivatives. This nano particle showed high activity and selectivity towards 2-methylfuran, unlike Ni nanoparticles that produced other unwanted products derived from the aromatic rings.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Lulu Qiao, Di Liu, Anquan Zhu, Jinxian Feng, Pengfei Zhou, Chunfa Liu, Kar Wei Ng, Hui Pan
Summary: This study reveals that surface evolution plays a crucial role in enhancing the electrocatalytic performance of transition metal oxides for electrochemical nitrate reduction reaction (e-NO3RR). Incorporating nickel into Co3O4 can promote surface reconstruction and improve the adsorption of intermediates and reduce energy barriers, leading to enhanced catalytic performance. The reconstructed cobalt-nickel hydroxides (CoyNi1_y(OH)2) on the catalyst's surface serve as the active phase.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Xinyu Song, Yang Shi, Zelin Wu, Bingkun Huang, Xinhao Wang, Heng Zhang, Peng Zhou, Wen Liu, Zhicheng Pan, Zhaokun Xiong, Bo Lai
Summary: This study explores the discriminative activities and mechanisms for activation of O-O bond in peroxy compounds via single-atom catalysts (SACs) with higher coordination numbers (M-N5). The atomic catalyst (Fe-SAC) with Fe-N5 as the active center was constructed, effectively activating peroxymonosulfate (PMS), peroxydisulfate (PDS), and hydrogen peroxide (H2O2). The study demonstrates the degradation efficiencies of acyclovir are related to the O-O bond length in different peroxy compounds, and reveals the discriminative mechanisms for activation of O-O bond in different Fenton-like systems.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Yangzhuo He, Hong Qin, Ziwei Wang, Han Wang, Yuan Zhu, Chengyun Zhou, Ying Zeng, Yicheng Li, Piao Xu, Guangming Zeng
Summary: A dual-metal-organic framework (MOF) assisted strategy was proposed to construct a magnetic Fe-Mn oxycarbide anchored on N-doped carbon for peroxymonosulfate (PMS) activation. The FeMn@NC-800 catalyst exhibited superior activity with almost 100% degradation of sulfamethazine (SMZ) in 30 minutes. The study provided insights for the rational design of high-performance heterogeneous catalysts and proposed a novel nonradical-based catalytic oxidation for environmental cleaning.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
