Article
Engineering, Chemical
Marina Cortes-Reyes, Concepcion Herrera, M. Angeles Larrubia, Luis J. Alemany
Summary: The study indicates that the removal of soot involves multiple steps, with different catalysts showing varying effectiveness in conversion. The diesel particulate filter component CeO2 is found to be the most efficient soot converter in the low-temperature range.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Review
Chemistry, Physical
Ferenc Martinovic, Lidia Castoldi, Fabio Alessandro Deorsola
Summary: Reducing emissions from diesel vehicles presents a challenging scientific and technological task, requiring complex catalytic systems such as SCR and LNT for NOx reduction, and DPF filters for soot removal. Integrated technologies like LNT-SCR and SCR-on-Filter are proposed for simultaneous NOx and soot abatement, aiming to overcome the drawbacks of individual devices.
Article
Chemistry, Applied
S. Montilla-Verdu, V Torregrosa-Rivero, A. Diaz-Verde, M. J. Illan-Gomez
Summary: In this work, the effect of partial substitution of Fe by Ni in BaFeO3 perovskite for NOx-assisted diesel soot oxidation catalyst was analyzed. BaFe1-xNixO3 (x = 0, 0.2, 0.4, and 0.8) catalysts were synthesized using the sol-gel method. Characterization of the catalysts was done using ICP-OES, XRD, XPS, O-2-TPD, H-2-TPR, and TEM. The catalytic activity for NO to NO2 oxidation and NOx-assisted diesel soot oxidation was determined. It was found that BaFe0.6Ni0.4O3 showed the best catalytic performance with the highest proportion of nickel on the surface.
TOPICS IN CATALYSIS
(2023)
Review
Environmental Sciences
Yuan-zhen Liu, Rui-tang Guo, Chao-peng Duan, Gui-lin Wu, Yu-fang Miao, Jing-wen Gu, Wei-guo Pan
Summary: Three-dimensionally ordered macroporous (3DOM)-based catalysts are promising for controlling gaseous pollutants emissions due to their high porosity, large surface area, pore volume, and excellent mass transfer capability. Recent studies have summarized the preparation and applications of 3DOM catalysts, along with introducing their advantages and mechanisms in gaseous pollutants control. Future perspectives and directions for 3DOM-based catalysts in gaseous pollutants control have also been proposed.
Review
Environmental Sciences
Jianbin Luo, Haiguo Zhang, Zhonghang Liu, Zhiqing Zhang, Yajuan Pan, Xiguang Liang, Shizhuo Wu, Hongxiang Xu, Song Xu, Chunmei Jiang
Summary: With the global emphasis on environmental protection and carbon neutrality, there is a need for reductions in pollutants such as carbon dioxide, nitrogen oxide, and particulate matter. Diesel engines are a major contributor to particulate matter pollution, and diesel particulate filter (DPF) technology has proven to be effective in controlling soot. This review discusses the exacerbating effect of particulate matter on human infectious diseases, the latest developments in DPF performance, soot catalytic oxidant schemes, and areas for future research.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Simon Schoenebaum, Juergen Dornseiffer, Peter Mauermann, Bernd Wolkenar, Stefan Sterlepper, Egbert Wessel, Riza Iskandar, Joachim Mayer, Thomas E. Weirich, Stefan Pischinger, Olivier Guillon, Ulrich Simon
Summary: Two commercially available lean NOx trap (LNT) catalysts were found to exhibit similar NOx storage behavior but showed significant differences during regeneration, indicating potential for optimizing storage and regeneration performance.
Article
Materials Science, Multidisciplinary
Neha, Ram Prasad, S. Singh
Summary: The study demonstrates that the presence of CO can enhance soot oxidation over LaCoO3 catalyst, especially in loose contact mode, which contributes to the development of systems for simultaneous oxidation of CO and soot.
Article
Energy & Fuels
Samuel Adeola Okeleye, Arvind Thiruvengadam, Marc Cyril Besch, Saroj Pradhan, Daniel Carder
Summary: With increasingly stringent emission regulations, there is a need for improvement in emissions control technology in heavy-duty diesel engines. The integration of Selective Catalytic Reduction (SCR) and Diesel Particulate Filter (DPF) in a single component, known as Selective Catalytic Reduction on Filter (SCRF), offers space-saving and thermal inertia opportunities. This study investigates the impact of particulate matter loading on the activities of a SCRF component coated with Cu-Ze catalyst on a heavy-duty diesel engine, showing that both NOx conversion efficiency and passive soot oxidation increase with loading.
JOURNAL OF THE ENERGY INSTITUTE
(2023)
Article
Chemistry, Physical
Salvador Montilla-Verdu, Alvaro Diaz-Verde, Veronica Torregrosa-Rivero, Maria Jose Illan-Gomez
Summary: In this study, the role of BaMn1-xNixO3 mixed oxide catalysts in NOx-assisted diesel soot oxidation was analyzed. The results showed that the catalysts with higher nickel content exhibited the highest soot conversion and selectivity to CO2. However, the catalytic performance was not significantly affected by the nickel content. Two catalysts were synthesized to improve the catalytic activity, and they showed higher activity for NO and soot oxidation due to the increased nickel content on the surface.
Article
Thermodynamics
Pan Wang, Zonglin Li, Chengcheng Ao, Lili Lei
Summary: This study numerically investigated the performance of CeO2-based catalyzed diesel particulate filter (CDPF) under hydrothermal aging conditions using a zero-dimensional model. The results showed that hydrothermal aging increases the regeneration temperature and decreases the soot oxidation rate.
PROCEEDINGS OF THE COMBUSTION INSTITUTE
(2023)
Article
Chemistry, Physical
Hua Pan, Zhenghui Chen, Mudi Ma, Tianjiao Guo, Xin Ling, Yufan Zheng, Chi He, Jun Chen
Summary: NOx and toluene are identified as the dominant air pollutants in solid waste combustion, and it is crucial to remove these two pollutants simultaneously. Mn/CeO2 and Mn/TiO2 exhibit a bifunctional property in NO reduction and toluene oxidation, but their activity decreases in simultaneous removal. There is mutual inhibition between NOx reduction and toluene oxidation over Mn-based catalysts, attributed to competitive adsorption and utilization of active oxygen.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Applied
Xiayu Liu, Yonghua Guo, Qiusheng He, Chan Zhang, Yan Li
Summary: Environmental contamination such as soot particles and NOx has recently gained significant attention. The main challenge lies in the oxidation of soot at low temperatures with the assistance of NOx. In this study, a series of core-shell MnCeOx catalysts were synthesized and applied for low-temperature catalytic oxidation of soot in the presence of NOx. The results showed that the prepared catalysts exhibited excellent performance in the oxidation of both NO and soot, indicating their potential application in environmental remediation.
JOURNAL OF RARE EARTHS
(2023)
Article
Environmental Sciences
Yuehan Qiao, Chenxi Wang, Gang Lyu, Ziming Jing, Yunqiang Li, Chonglin Song
Summary: The aim of this study was to investigate the reaction kinetics of diesel exhaust soot during oxidation process. The oxidation kinetics were determined using a thermogravimetric analyzer under non-isothermal conditions. Raman spectroscopy and high-resolution transmission electron microscopy were used to analyze the changes in soot structure during oxidation. The results showed that the kinetics of diesel soot oxidation followed a three-step process, and the proposed kinetic models provided more accurate predictions than the common first-order model.
Article
Chemistry, Applied
Junheng Liu, Yongxu Wang, Ping Sun, Pan Wang, Chen Zhang, Hongjie Ma
Summary: To control high emissions of soot and NOx from diesel engines, this research utilizes perovskite oxide catalysts to simultaneously remove soot and NO. The study investigates the effect of K+ and Fe3+ doping on the active sites and structure stability of LaMnO3 perovskite catalyst. The results show that doping enhances the catalytic activity for soot oxidation and improves the removal efficiency of NO.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Applied
Xiaochen Wang, Jianbing Gao, Hao Chen, Zhanming Chen, Peng Zhang, Zhenbin Chen
Summary: The study found that increasing methanol substitution can lower activation energy and increase soot oxidation reactivity, which is closely related to changes in primary particle size and fringe parameters. This suggests that the ignition of soot oxidation is highly dependent on its morphology and nanostructure, showing advantages for engine fuel economy improvement in diesel/methanol dual-fuel operation.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Energy & Fuels
Matteo Borella, Alessandro A. Casazza, Gabriella Garbarino, Paola Riani, Guido Busca
Summary: The thermal degradation pyrolysis of Kraft lignin was investigated at different temperatures in the absence of catalysts. The high sulfur content in the lignin led to the formation of sulfur-containing compounds in the pyrolysis products. The pyrolytic gas was found to be rich in methane, carbon monoxide, carbon dioxide, and hydrogen sulfide, along with other sulfur compounds in smaller amounts. The bio-oil obtained from the pyrolysis contained alkyl-alkoxy phenols, dihydroxy benzenes, and minor amounts of hydrocarbons and sulfur compounds.
Article
Chemistry, Physical
Rob Jeremiah G. Nuguid, Lorenzo Ortino-Ghini, Vitaly L. Suskevich, Jie Yang, Luca Lietti, Oliver Krocher, Davide Ferri
Summary: Temperature, gas feed, and catalyst composition affect the interplay between Lewis acid sites (LAS) and Bronsted-Lowry acid sites (BAS) on vanadia-based materials. Transient experimentation can isolate different LAS, and water can increase BAS. These findings are important for understanding the relationship between LAS and BAS and their role in catalyst reactivity.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Energy & Fuels
Cui Quan, Guangtao Zhang, Ningbo Gao, Sheng Su, Nancy Artioli, Dongdong Feng
Summary: This paper studied the migration, transformation, leaching toxicity, and risk assessment of heavy metals in oily sludge pyrolysis. The results showed that heavy metals were enriched in char and the leaching concentration of some heavy metals decreased after pyrolysis, while others increased. The findings also suggested that pyrolysis reduced the environmental risk of some heavy metals, but increased the risk of others.
Article
Energy & Fuels
J. A. Cecilia, E. Vilarrasa-Garcia, R. Morales-Ospino, E. Finocchio, G. Busca, K. Sapag, J. Villarroel-Rocha, M. Bastos-Neto, D. C. S. Azevedo, E. Rodriguez-Castellon
Summary: This study focuses on the separation of CO2 from emissions using low-cost adsorbents. Zeolite 4A was successfully synthesized from natural kaolinite under specific conditions, showing similar properties to commercial 4A zeolite. The research aims to optimize the synthesis process to enhance CO2 adsorption capacity.
Article
Engineering, Chemical
Giovanni Pampararo, Gabriella Garbarino, Antonio Comite, Guido Busca, Paola Riani
Summary: CuO-ZnAl2O4 based catalysts were tested for selective dehydrogenation of ethanol to acetaldehyde. Different preparation procedures were adopted, and a novel Cu-SSC catalyst showed high yield and selectivity. The catalysts can be efficiently pre-reduced in the reactant mixture and have a long deactivation time.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Applied
Gabriella Garbarino, Giovanni Pampararo, Elisabetta Finocchio, Guido Busca, Antonella Gervasini, Sebastiano Campisi, Brigida Silvestri, Claudio Imparato, Antonio Aronne
Summary: Amorphous catalytic materials belonging to the Nb2O5-P2O5-SiO2 system were prepared through a sustainable sol-gel procedure, exhibiting strong acidity and good selectivity in ethanol conversion but with the generation of by-products at high temperature and conversion.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Applied
Y. Hamid, R. Matarrese, S. Morandi, L. Castoldi, L. Lietti
Summary: In this study, the mechanistic aspects of NO adsorption/desorption over a home-made Pd/SSZ-13 passive NOx adsorber catalyst were investigated. The presence of species such as C3H6 and CO negatively affected the amount of NO adsorbed and the stability of nitrosyls. In addition, the addition of C3H6 led to the formation of oxidized species and organic nitro-compounds.
TOPICS IN CATALYSIS
(2023)
Article
Energy & Fuels
Alessandro Porta, Roberto Matarrese, Carlo Giorgio Visconti, Luca Lietti
Summary: In this study, we investigate the impact of different atmospheres and process conditions on the catalytic performances of Ru-and K/Ba-based dual-function materials for CO2 capture and methanation. Through experiments and spectroscopy analysis, we identify the effects of temperature, H2 partial pressure, water, and oxygen on the hydrogenation and CO2 adsorption steps. The findings provide valuable insights into the design improvement of DFMs for flue gas treatment.
Article
Engineering, Chemical
Krutarth Pandit, Callum Jeffrey, John Keogh, Manishkumar S. Tiwari, Nancy Artioli, Haresh G. Manyar
Summary: Glycerol, a byproduct of biodiesel production, is a valuable feedstock produced in biorefineries. The esterification of glycerol with acetic acid produces a mixture of mono-, di-, and triacetins. Diacetin and triacetin, among the acetins, are considered important fuel additives with high energy density. The economic feasibility of producing diacetin and triacetin from glycerol has been studied, and the results indicate a positive gross profit and NPV for the project with a short payback period.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Lidia Castoldi, Sara Morandi, Pierfrancesco Ticali, Roberto Matarrese, Luca Lietti
Summary: This study prepared and characterized Pd-promoted zeolites (Y, ZSM-5, FER, SSZ-13) to analyze their properties as low-temperature NOx adsorbers. The Pd dispersion in the zeolite framework was found to be influenced by the zeolite cage size, with smaller cages resulting in higher Pd dispersion and storage capacity. NO adsorption mainly occurred in the form of Pd nitrosyls and nitrates. The NO desorption occurred both at temperatures below 200°C and in a high-temperature range near 350°C.
Article
Thermodynamics
Simone Gallarini, Andrea Spinelli, Luca Lietti, Alberto Guardone
Summary: This manuscript presents a study on the thermal stability of hexamethyldisiloxane (MM-C6H18OSi2) and octamethyltrisiloxane (MDM-C8H24O2Si3) in the range of 270-420 degrees C for organic Rankine cycle applications. The results indicate that MM has higher stability than MDM, and the behavior of the equimolar mixture of MM and MDM is different from that of the pure fluids.
Article
Environmental Sciences
Marina Maddaloni, Matteo Marchionni, Alessandro Abba, Michele Mascia, Vittorio Tola, Maria Paola Carpanese, Giorgio Bertanza, Nancy Artioli
Summary: In response to the EU's carbon neutrality initiative, water electrolysis for hydrogen production, particularly using Solid Oxide Electrolysis Cell (SOEC), is promising for decarbonizing energy systems. This study modeled a SOEC supplied with treated municipal wastewaters to determine the potential for green hydrogen production. By effectively evaporating and treating two wastewater streams, it was estimated that 26.2 kg/m(3) and 9.7 kg/m(3) of green hydrogen could be produced, contributing 0.4% to 20% of Italy's projected electricity demand by 2030.
Article
Environmental Sciences
Moses T. Yilleng, Nancy Artioli, David Rooney, Haresh Manyar
Summary: Palladium@mesoporous titania core@shell nanoparticles with uniform size distribution were synthesized using a four-component microemulsion system. These nanoparticles showed good absorption in both UV and visible regions, indicating their visible-light activity, which was not present in pristine TiO2 P25. The prepared 2%Pd@mTiO2 nanoparticles exhibited better photocatalytic performance for phenol degradation in visible light compared to conventional TiO2 P25 and 0.5%Pd/TiO2 P25 catalysts. Furthermore, the 2%Pd@mTiO2 catalysts demonstrated higher stability and reusability, with very high and stable phenol degradation in continuous flow over 52 hours. This study highlights the potential application of these catalysts for phenol degradation and wastewater treatment.
Article
Energy & Fuels
Jamilu Salisu, Ningbo Gao, Cui Quan, Jale Yanik, Nancy Artioli
Summary: This study presents a novel model for simulating the co-gasification of rice husk and plastic using Aspen Plus. The model utilizes an artificial neural network (ANN) to predict the pyrolysis process involved in gasification, resulting in a more realistic model. Three ANN models were developed, using inputs of ultimate analysis, higher heating value, and pyrolysis temperature. The developed models showed good agreement with actual data and achieved a maximum hydrogen content of 69.42 vol% at 750 degrees C, with a least root mean square error of 2.62.
JOURNAL OF THE ENERGY INSTITUTE
(2023)
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)
