Article
Chemistry, Physical
Guangyan Xu, Honghong Wang, Yunbo Yu, Hong He
Summary: The study revealed the presence of various silver species on Ag/Al2O3 catalysts, with metallic silver clusters identified as the active sites for nitrate formation and the reduction of silver nitrates being the rate-determining step in the H-2-NH3-SCR reaction.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Applied
Carmine D'Agostino, Sarayute Chansai, Lynn F. Gladden, Christopher Hardacre
Summary: NMR relaxation time ratio T-1/T-2 is used to characterize the strength of surface interaction of reducing agent species in Ag/Al2O3 catalysts for SCR of NOx. The interaction strength plays a crucial role in determining catalyst performance and initial activation, with different reducing agents showing varying affinities with the catalyst.
Article
Chemistry, Multidisciplinary
Kyungseok Lee, Byungchul Choi, Cheolho Kim, Chunbeom Lee, Kwangchul Oh
Summary: The combination of Ag/Al2O3 and CuSn/ZSM-5 showed superior catalytic performance in reducing NOx and oxidizing C3H6 at lower temperatures. Sequential arrangement of 1Ag/Al2O3 + 2Cu1Sn/ZSM-5 was found to be the best catalytic configuration for simultaneous reduction of NOx, C3H6, and H-2 over a wide temperature range. The reduced NOx was mostly converted to N-2 with minimal generation of N2O, NH3, and HCNO.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Review
Energy & Fuels
Zhiwei Shi, Qingguo Peng, Jiaqiang E, Bo Xie, Jia Wei, Ruixue Yin, Guang Fu
Summary: This article systematically reviews the modification methods of catalysts in selective catalytic reduction (SCR) technology, analyzes the effects of various catalyst parameters on denitrification efficiency, and discusses the influences of spatial structure on catalytic effect. Additionally, it compares the performance of catalysts with different components and summarizes the current problems in catalyst research. The development of NH3-SCR technology is also prospected.
Article
Chemistry, Physical
Chenhao Fang, Michael P. Harold
Summary: This study investigates the in situ regeneration of sulfur-poisoned Pt catalysts in diesel emission control. The results show that NH3 can effectively regenerate the poisoned catalysts at elevated temperatures, and propose a possible mechanism for the restoration of catalytic activity.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Prateek Khatri, Divesh Bhatia
Summary: The newly developed Ag/MgO γ-Al2O3 catalyst exhibits strong NOx adsorption and reduction capabilities, significantly influenced by the presence of H-2, but not related to its SCR activity or NO oxidation activity.
APPLIED CATALYSIS A-GENERAL
(2021)
Review
Chemistry, Applied
Dong Wook Kwon, Somin Lee, Jongsik Kim, Kwan-Young Lee, Heon Phil Ha
Summary: The roles of WO3 and SiO2 as supported on TiO2 in Ce-V catalysts were systematically investigated for NH3-SCR and NH3-oxidation at high temperatures. The addition of SiO2 and WO3 to TiO2 resulted in increased surface area, reduced nanoparticle size, and enhanced catalytic defects and oxygen species on Ce-V/TWS surface. Increasing (V4+ + V3+) fraction improved catalytic activity, with WO3 and SiO2 promoting redox properties and making Ce-V/TWS the most suitable catalyst for N-2 production via NH3 direct oxidation at high temperatures.
Article
Chemistry, Physical
Jungseob So, Seung Jun Lee, Minkyu Kim, Hyeonwoo Shin, Wo Bin Bae, Sung Bong Kang, Young Jin Kim
Summary: AgW/Al2O3 exhibits higher reactivity for ethanol SCR compared to Ag/Al2O3 throughout the entire reaction temperature range. STEM-EDS confirms the hierarchical structure of AgW/Al2O3 with highly dispersed W on Al2O3 and narrow size distribution of Ag species in contact with W. UV-vis, H2-TPR, and DRIFT results show that abundant metallic Ag in AgW/Al2O3 accelerates the activation of ethanol into acetaldehyde at low to medium temperatures, while ethylene formed over W-induced Bronsted acid sites contributes to high-temperature deNOx capacity. DFT calculations support the higher reactivity of AgW/Al2O3 towards acetaldehyde formation, with predominantly metallic Ag and Ag ionically bonded with WO3 predicted as the active phases.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Energy & Fuels
Hanyu Chen, Sirui Sun, Wei Lou, Xi Wang
Summary: The selective catalytic reduction of NQ(x) with ethanol and NH3 over Cu-SSZ-13 catalyst was studied using synchrotron vacuum ultraviolet photoionization mass spectrometry. The reaction intermediates were identified and different pathways were proposed based on the temperature. This work provides new insights for emission control and SCR system improvement.
Article
Environmental Sciences
Tingting Que, Kaijiao Duan, Sivasankar Koppala, Yanfang Zhang, Yungang He, Lijuan Jia, Tiancheng Liu
Summary: In this study, a novel co-precipitation coupled solvothermal procedure was used to prepare a SmMnOx catalyst with a reed flower-like structure, which exhibited excellent performance in the selective catalytic reduction of NOx by NH3 at low temperatures. The unique morphology of the catalyst, characterized by the largest surface area, strong synergistic reaction of Sm and Mn, abundant surface oxygen species and active sites, and enhanced redox ability, contributed to its superior catalytic performance. Moreover, the amorphous reed flower-like structure promoted short-range ordered interaction between active components and inhibited the formation of sulfate species.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
Dong Ho Kim, Yeon Jae Park, Min Gie Jung, Kwan-Young Lee, Heon Phil Ha, Dong Wook Kwon
Summary: Both V2O5 and MnOx on TiO2 are metal oxides widely used for selective catalytic reduction (SCR) with NH3. The reaction characteristics of SCR were explored by varying the composition of Mn/V. Under NO-rich conditions, the optimal Mn/V ratio resulted in improved performance, while an increase in the amount of Mn compared to V led to an increase in the NOx consumption rate under NO2-rich conditions. The catalysts synthesized according to the Mn/V ratio resulted in changes in the reaction rate and the type of species adsorbed, and followed the Langmuir-Hinshelwood (LH) mechanism for SCR reactions.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yusuke Inomata, Hiroe Kubota, Yoshinori Honmatsu, Hiroaki Takamitsu, Sosuke Sakotami, Kazuhiro Yoshida, Takashi Toyao, Ken-ichi Shimizu, Toru Murayama
Summary: NH3-SCR is a key technique for reducing harmful NOx emissions. The study shows that Na-intercalated vanadium oxide can accelerate the reaction and improve the efficiency of NH3-SCR.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Correction
Chemistry, Physical
Jun Cao, Sohrab Rohani, Weizao Liu, Honghui Liu, Zhuquan Lu, Hongli Wu, Lijun Jiang, Ming Kong, Qingcai Liu, Xiaojiang Yao
Summary: The publisher apologizes for the error in the corresponding authors' address and has made the necessary updates.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Energy & Fuels
Hanyu Chen, Qigeng He, Mingzhen Li, Xi Wang
Summary: The ethanol-selective catalytic reduction (SCR) and (ethanol + NH3)-SCR over a Pt/Al2O3 catalyst at low temperatures were studied using synchrotron vacuum ultraviolet photoionization mass spectrometry (SVUV-PIMS). The results show that NH3 can improve the conversion efficiency of NO in ethanol-SCR process, and the addition of NH3 can reduce the generation of organic intermediates.
Review
Chemistry, Applied
Tao Chen, Shan Ren, Lin Chen, Zhichao Chen, Xiaodi Li, Mingming Wang, Jie Yang
Summary: The increase of solid wastes poses a great threat to the environment and human health, making the resource utilization of solid wastes inevitable in industrial development. Certain types of solid wastes, such as blast furnace slag, red mud, coal fly ash, and Fenton sludge, have been extensively studied as potential materials for NH3-SCR catalysts. These catalyst supports derived from solid wastes provide large specific surface areas, enhancing NH3 adsorption and improving the denitrification efficiency.
Article
Chemistry, Physical
Charlotte Croise, Khaled Alabd, Sophie Tence, Etienne Gaudin, Antoine Villesuzanne, Xavier Courtois, Nicolas Bion, Fabien Can
Summary: This study investigates the influence of rare-earth (R) element in Ru/RScSi electride-like intermetallic catalysts for ammonia synthesis under mild conditions. The catalytic performances follow the lanthanides series and appear correlated with the formation of the hydride phase. Ru-1.7/CeScSi shows remarkable catalytic activity associated with its reversible hydrogen storage-release properties. It is suggested that NHX formation could be the rate determining step rather than the N-2 cleavage over these catalysts.
Article
Engineering, Environmental
Madan Mohan Behera, Carmen Ciotonea, Lilian Olivet, Lucette Tidahy, Sebastien Royer, Diane Thomas, Renaud Cousin, Guy De Weireld, Stephane Siffert, Christophe Poupin
Summary: This study investigates the removal of NO from cement-type industrial flue gases using Cu-Al mixed metal oxides as catalysts. The researchers found that Cu-Al-CO2 catalyst showed the highest activity for NO reduction even in the absence of water. The study also introduces a novel method for synthesizing mixed oxides using CO2 treatment. The results demonstrate the effectiveness of CO2 treatment in enhancing the catalytic performance for NO reduction.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Amanda Sfeir, Camila A. Teles, Maya Marinova, Herve Vezin, Jean-Philippe Dacquin, Axel Lofberg, Said Laassiri, Sebastien Royer
Summary: Modulating the interaction between Mo nanoparticles and their support can finely tune the properties of the active site. In this study, molybdenum nitride catalysts supported on TiO2 and SBA-15 were prepared and characterized. The catalytic activity of Mo species was strongly influenced by the nature of the support, with SBA-15 being the most suitable for Mo dispersion. Mo species supported on a reducible oxide (TiO2) exhibited poor catalytic activity and quick deactivation in ammonia synthesis reaction due to charge transfer from the support. Differences in oxidation states, redox behaviors, and electronic properties were further studied.
FARADAY DISCUSSIONS
(2023)
Article
Chemistry, Applied
Maxime Delporte, Helena Kaper, Fabien Can, Nicolas Bion, Xavier Courtois
Summary: The use of expensive precious metal based catalysts has shown promise for catalytic treatment of residual refractory methane in the exhaust gas from NGV engines. Recent research has found that combining a perovskite with a Pd/YSZ catalyst improves both oxygen exchange behavior and methane oxidation. This study aims to investigate the concept of this dual catalytic bed system under more realistic conditions, and found that the configuration promoted CH4 abatement in lean mixture but was inhibited by CO2 and H2O.
TOPICS IN CATALYSIS
(2023)
Article
Chemistry, Physical
Charlotte Croise, Khaled Alabd, Antoine Villesuzanne, Fabien Can, Xavier Courtois, Etienne Gaudin, Sophie Tence, Nicolas Bion
Summary: Ru/LaScSi and Ru/CeTiGe were found to be the most active catalysts for ammonia synthesis, with Ru/LaScSi exhibiting electride-like properties and Ru/CeTiGe following an associative mechanism with the assistance of absorbed H. This conclusion was drawn through a combination of DFT calculations and 15N/14N homomolecular exchange experiments.
CATALYSIS COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Carmen Ciotonea, Yaqian Wei, Adrian Ungureanu, Cezar Catrinescu, Olivier Gardol, Anne-Sophie Mamede, Franck Dumeignil, Sebastien Paul, Louise Jalowiecki-Duhamel, Sebastien Royer
Summary: This study investigates the use of nickel-based materials in the dry reforming of methane, an important process for producing hydrogen and syngas. Ni nanoparticles are formed from porous phyllosilicates under reducing conditions. The nanoparticles are highly dispersed even at high metal loadings, and show excellent resistance to sintering and carbon formation. The results demonstrate the potential of these materials for DRM applications.
Article
Nanoscience & Nanotechnology
Mustapha El Kadiri, Taha El Assimi, Pascal Thebault, Abdellatif El Meziane, Sebastien Royer, Abdelkrim El Kadib, Geraldine Gouhier, Mohammed Lahcini
Summary: In this study, a straightforward strategy is demonstrated to trap and stabilize bismuth nanoparticles on chitosan biopolymer for catalytic applications. The resulting catalyst showed high catalytic capacity and selectivity in the reduction of nitroaromatic compounds, leading to the production of anilines and azoarenes with high yields under mild and sustainable reaction conditions.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Alexandre Nau, Remy Pointecouteau, Melissandre Richard, Thomas Belin, Fabien Can, Clement Comminges, Nicolas Bion
Summary: Catalytic methane combustion experiments were conducted on YSZ, Pd/YSZ, and Rh/YSZ at temperatures ranging from 200 to 700 degrees Celsius. While Pd/YSZ and Rh/YSZ exhibited similar light-off curves between 200 and 450 degrees Celsius, isotopic exchange experiments using CD4 and 18O2 revealed differences in the activation of reactant molecules for both supported catalysts. The use of C18O2 isotopic gas was found to be more suitable than 18O2 to evaluate the bulk oxygen mobility in YSZ at low temperatures. The exchange of gaseous CO2 with lattice YSZ oxygen atoms, facilitated by surface hydrogen carbonate intermediate species, demonstrated the contribution of YSZ bulk oxygen atoms in Rh/YSZ at low temperatures.
CATALYSIS COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Camila A. Teles, Carmen Ciotonea, Sebastien Royer, Frederic Richard
Summary: The transformation of furfural-acetone condensation adduct (FAc) was studied over molybdenum supported on SBA-15 doped with different acid/oxophilic species. The results showed that the dopants enhanced the activity and selectivity of the catalyst.
Article
Nanoscience & Nanotechnology
Nisrine Hammi, Mickaele Bonneau, Abdelkrim El Kadib, Susumu Kitagawa, Thierry Loiseau, Christophe Volkringer, Sebastien Royer, Jeremy Dhainaut
Summary: This study investigates the use of chitosan hydrogel microspheres as a template for growing an extended network of MOF-type HKUST-1. Different drying methods (supercritical CO2, freeze-drying, and vacuum drying) were used to generate three-dimensional polysaccharide nanofibrils embedding MOF nanoclusters. The resulting HKUST-1@Chitosan beads exhibit uniform and stable loadings of HKUST-1 and were used for the adsorption of CO2, CH4, Xe, and Kr. The maximum adsorption capacity of CO2 was found to be 1.98 mmol center dot g(-1) at 298 K and 1 bar, which is significantly higher than those of most MOF-based composite materials. Based on Henry's constants, thus-prepared HKUST-1@CS beads also exhibit fair selectivity for CO2 over CH4 and Xe over Kr, making them promising candidates for capture and separation applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Yin Xu, Jeremy Dhainaut, Jean-Philippe Dacquin, Jean-Francois Lamonier, Hui Zhang, Sebastien Royer
Summary: Defect engineering in catalytic materials, specifically modifying the A-site cationic vacancies, has been proven to be a feasible strategy for optimizing the catalytic performance of perovskite materials, as demonstrated by the enhanced formaldehyde oxidation activity of La1-xMnO3 materials.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Materials Science, Multidisciplinary
Nisrine Hammi, Marta Kedzierska, Natalia Wronska, Nadia Katir, Jeremy Dhainaut, Sebastien Royer, Katarzyna Lisowska, Maria Bryszewska, Katarzyna Milowska, Abdelkrim El Kadib
Summary: Evaporation-induced co-assembly of boron nitride-exfoliated chitosan hydrogel provides micrometer-thick boron nitride-filled chitosan nanocomposite films. Increasing the loading of boron nitride improves the wettability, mechanical and thermal properties of the films, as well as the antibacterial properties, making them potential metal-free, antibacterial surface coating materials.
MATERIALS ADVANCES
(2023)
Article
Materials Science, Multidisciplinary
Nisrine Hammi, Marta Kedzierska, Natalia Wronska, Nadia Katir, Jeremy Dhainaut, Sebastien Royer, Katarzyna Lisowska, Maria Bryszewska, Katarzyna Milowska, Abdelkrim El Kadib
Summary: Evaporation-induced co-assembly of boron nitride-exfoliated chitosan hydrogel provides micrometer-thick boron nitride-filled chitosan nanocomposite films with improved mechanical and thermal properties, as well as enhanced antibacterial performance.
MATERIALS ADVANCES
(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)
