Article
Chemistry, Physical
Adriana P. Ramon, Xiansheng Li, Adam H. Clark, Olga V. Safonova, Francielle C. Marcos, Elisabete M. Assaf, Jeroen A. van Bokhoven, Luca Artiglia, Jose M. Assaf
Summary: Dry reforming of methane (DRM) is a promising process for generating synthetic gas with a low H-2/CO ratio. The main challenges in DRM, carbon deposition and active metal sintering, can be overcome by using stable materials like pyrochlores and perovskites. By synthesizing La2Ce2O7 and LaNiO3 mixed oxides using modified Pechini and hydrothermal methods, this study demonstrated their stability and high catalytic activity during low-temperature and high-temperature DRM reactions. The catalyst synthesized through the hydrothermal method showed the best performance, attributed to its abundant basic sites, oxygen vacancies, and strong interaction between nickel and cerium.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Soham Shah, Jiyun Hong, Luz Cruz, Somchate Wasantwisut, Simon R. Bare, Kandis Leslie Gilliard-AbdulAziz
Summary: The exsolution of nanoparticles from perovskite precursors as catalysts is explored for their resistance to sintering or coke formation. The characteristics of these exsolved nanoparticles are highly dynamic depending on the redox nature of the environment they experience. In this study, in situ XAS, along with ex situ STEM-HAADF and energy-dispersive X-ray spectroscopy analysis, is used to track the formation and behavior of NiFe nanoparticles from the perovskite oxide precursor LaFe0.8Ni0.2O3 under different environments. The study reveals the exsolution and regeneration of bimetallic alloy nanoparticles and the influence of reaction conditions on their catalyst performance.
Article
Chemistry, Physical
Pengfei Cao, Pengyi Tang, Maged F. Bekheet, Hongchu Du, Luyan Yang, Leander Haug, Albert Gili, Benjamin Bischoff, Aleksander Gurlo, Martin Kunz, Rafal E. Dunin-Borkowski, Simon Penner, Marc Heggen
Summary: By using a combination of in situ characterization techniques, we investigated the surface and bulk dynamics of LaNiO3 material during heating in vacuo, revealing the Ni exsolution dynamics on both local and global scales. The remaining perovskite grains exhibited a drastic shrinkage and compression of structure after the Ni exsolution, mainly occurring at grain boundaries and stacking faults.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Adriano H. Braga, Daniela C. de Oliveira, Alan R. Taschin, Joao B. O. Santos, Jean Marcel R. Gallo, Jose M. C. Bueno
Summary: A spectroscopic and microscopic investigation was conducted on bimetallic nanoparticles in Co-Ni/MgAl2O4 catalysts used for steam reforming of ethanol. The study sheds light on the significant impact of Co-Ni alloy in reforming reactions, providing insights into catalytic performance.
Article
Chemistry, Physical
Shiva Fazlikeshteli, Xavier Vendrell, Jordi Llorca
Summary: Monometallic Pd and Ni and bimetallic Pd-Ni catalysts supported on CeO2 were prepared and tested for syngas production by the partial oxidation of methane. Bimetallic Pd-Ni/CeO2 catalysts exhibited higher methane conversion and syngas yield compared to monometallic Ni/CeO2 and Pd/CeO2. The bimetallic catalysts prepared by ball milling showed syngas production at lower temperatures. Various preparation parameters were examined, and the best performance was achieved with a bimetallic catalyst prepared at 50 Hz for 20 min, containing only 0.12 wt% Pd and 1.38 wt% Ni. Stability tests demonstrated superior stability for mechanochemically prepared bimetallic Pd-Ni/CeO2 catalysts. The results suggest that the impressive dispersion of metal species and strong interaction with the CeO2 surface contribute to the improved performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Pedro M. Araujo, Kevin M. da Costa, Fabio B. Passos
Summary: Nickel supported on perovskite supports showed high conversion and stability in the autothermal reforming of methane, especially Ni/CaTiO3 and Ni/BaTiO3. The alumina supported catalyst exhibited the highest initial conversion and selectivity, but deactivated over time.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Energy & Fuels
Shuowen Guo, Yinghui Sun, Yanbin Zhang, Chenghu Zhang, Ying Li, Jie Bai
Summary: This article provides an overview of dry reforming of methane (DRM) reaction and its application in catalysts, with a focus on the development and limitations of NiCo bimetallic catalysts. The correlation between component properties and catalytic performances, the effect of preparation methods, and the reaction mechanisms of the catalysts are discussed. The deactivation issues caused by carbon deposition and bimetallic sintering are highlighted, and the role of promoters in overcoming these issues is emphasized.
Article
Chemistry, Physical
Thanh Son Phan, Doan Pham Minh
Summary: Dry reforming of methane (DRM) is a promising process for producing synthetic gas, and the design of an effective catalyst is crucial. In this study, nickel catalysts supported by calcium hydroxyapatite (HAP) and HAP-doped magnesium (Mg_HAP) were synthesized and evaluated in the DRM reaction. The Ni/HAP and Ni/Mg_HAP catalysts showed outstanding performance due to the tunable acidity-basicity of the supports, strong metal-support interaction, and good thermal stability of nickel nanoparticles. The main products were H2 and CO, with stable selectivity around 85%, while H2O and solid carbon were byproducts with 5-10% selectivity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Juchan Kim, Chaesung Lim, Dongmin Lee, Hayoung Jeong, Jeong Woo Han, Kyoung-Su Ha
Summary: Lanthanum-based perovskite catalysts combined with non-thermal plasma can enhance the performance of partial oxidation of methane. Surface oxygen species of the perovskite catalysts play a crucial role in the reaction. Sr-doped LaAlO3 catalysts show improved H2 selectivity and slightly higher CO selectivity due to enhanced oxygen transfer capability.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Applied
Srikar Bhattar, Md Ashraful Abedin, Swarom Kanitkar, James J. Spivey
Summary: Perovskite-derived catalysts in dry reforming of methane exhibit superior catalytic performance due to the synergistic effects of bimetallic addition at the B site and enhanced oxygen mobility through A site substitutions. The use of high surface area supports also greatly influences the physicochemical and catalytic behavior of perovskite-derived catalysts. The exsolution process involved in the reduction of perovskite catalysts produces smaller size metal particles which dictate the superior catalytic performance of these materials.
Article
Engineering, Chemical
Pradeep Kumar Yadav, Preeti Dahiya, Tapas Kumar Mandal, Taraknath Das
Summary: In this study, a series of ceria-doped perovskite catalysts and magnesia-modified alumina-supported perovskite catalysts were prepared via the sol-gel method and thoroughly characterized. The results showed that the ceria doping enhanced the dispersion of active sites, increased the stability of the catalyst, and inhibited coke deposition. The addition of magnesia and substitution of La-ion with ceria further improved the catalytic activity. The magnesia-modified alumina-supported perovskite catalyst exhibited higher activity and lower coke deposition.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Thermodynamics
Dingshan Cao, Cong Luo, Guoqiu Cai, Tong Luo, Fan Wu, Xiaoshan Li, Ying Zheng, Liqi Zhang
Summary: This study investigates the influence of different preparation methods on the catalyst structure and DRM reaction performance by preparing LaNiO3 catalysts through sol-gel, co-precipitation, and hydro-thermal methods. It is found that LaNiO3 prepared by the sol-gel method shows the best DRM performance at 750°C, while the samples prepared by the hydro-thermal method are inhibited at 750°C due to the residual Na+ ions. The regeneration tests show that none of the three atmospheres can restore the LaNiO3 perovskite phase, but they can eliminate carbon deposits in the samples, maintaining stable DRM performance at different cycling stages.
JOURNAL OF THERMAL SCIENCE
(2023)
Article
Chemistry, Applied
Xiaoqing Yuan, Bin Li, Xiujun Wang, Baitao Li
Summary: Y Neodymium-modified hydrotalcite-derived nickel catalysts with different Nd contents showed varied catalytic properties in the dry reforming of methane reaction, with Ni7.5NdMgAlO catalyst exhibiting the best performance. Proper doping of neodymium can increase the exposure of active sites on the catalyst surface, effectively inhibit coke formation, and improve coke resistance.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Tamara S. Moraes, Vanderlei S. Bergamaschi, Joao C. Ferreira, Estevam Spinace
Summary: A core-shell catalyst was tested for ethanol steam reforming reaction under low-temperature conditions, showing excellent activity and high coke inhibition capacity compared to other catalysts.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Energy & Fuels
Stefano Padula, Claudio Tregambi, Maurizio Troiano, Almerinda Di Benedetto, Piero Salatino, Gianluca Landi, Roberto Solimene
Summary: The performance of a perovskite-based oxygen carrier for the partial oxidation of methane in thermochemical energy storage applications has been investigated. Results showed good reactivity and stability in the range 800-1000 degrees C. Fluidized-bed conditions showed higher conversion rates compared to fixed-bed conditions and allowed better control of CH4 decomposition.
Article
Chemistry, Physical
Zoulikha Abdelsadek, Juan P. Holgado, Djamila Halliche, Alfonso Caballero, Ouiza Cherifi, Sergio Gonzalez-Cortes, Patrick J. Masset
Summary: The study demonstrates that introducing Mg into the catalyst precursor derived from hydrotalcite structure can enhance the activity and resistance to coke formation of Ni-based catalysts for dry reforming of methane, thereby improving their stability in the process.
Article
Chemistry, Physical
Alberto Rodriguez-Gomez, Angeles Lopez-Martin, Adrian Ramirez, Jorge Gascon, Alfonso Caballero
Summary: Cerium helps to enhance the location of nickel inside mesopores and suppress coke formation, leading to improved catalytic activity and stability.
Article
Chemistry, Physical
Francisco Platero, Angeles Lopez-Martin, Alfonso Caballero, Gerardo Colon
Summary: The study shows that the production of gas phase H-2 notably increases as temperature rises, with optimal yield achieved at 10% v/v methanol concentration. CO and CO2 are side products of the overall reaction, with CO evolution more significant at lower temperatures but hindered as temperature increases, leading to boosted H-2 production.
Article
Chemistry, Physical
A. Lopez-Martin, M. F. Sini, M. G. Cutrufello, A. Caballero, G. Colon
Summary: This study analyzed the promoting effect of rhenium addition as a co-dopant in the Mo/ZSM-5 catalyst system. It was found that the sequential impregnation method affected the synergy between Mo and Re, and the catalyst with Re incorporated first showed higher aromatic yields and stability against deactivation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Energy & Fuels
Beata Sciana, Wojciech Dawidowski, Damian Radziewicz, Joanna Jadczak, Mari Cruz Lopez-Escalante, Victor Gonzalez de la Cruz, Mercedes Gabas
Summary: This study investigates fully strained GaAsN/GaAs heterostructures obtained by metalorganic vapor phase epitaxy, focusing on the correlation between the strain in the GaAsN epilayers and the formation of split interstitial complexes (N-As)(As). The results show that the strain in the GaAsN epilayers is mainly caused by lattice mismatch, while the local strain decreases with an increasing ratio of (N-As)(As) interstitial defects to substitutional nitrogen atoms. It is also found that the (N-As)(As) interstitials can compensate for the local strain resulting from the presence of N in the GaAs matrix if their amount does not exceed a certain threshold.
Article
Chemistry, Physical
S. Todorova, H. Kolev, Y. Karakirova, D. Filkova, B. Grahovski, K. Aleksieva, J. P. Holgado, G. Kadinov, A. Caballero
Summary: The supported silver catalysts were studied for selective oxidation of CO at low temperatures. It was found that the addition of cerium oxide increased the catalytic activity and selectivity.
REACTION KINETICS MECHANISMS AND CATALYSIS
(2022)
Article
Chemistry, Physical
Maya Shopska, Alfonso Caballero, Francisco Platero, Silviya Todorova, Krassimir Tenchev, Martin Fabian, Katerina Aleksieva, Hristo Kolev, Georgi Kadinov
Summary: The properties of prereduced (10%Co + 0.5%Pd)/Al2O3 (TiO2) systems in the CO hydrogenation reaction were studied, and it was found that catalysts using alumina or titania as supports exhibited different selectivity towards methane and activity. The reaction led to metal surface reconstruction and increased formation of CH2 groups, especially with titania-supported catalysts. Stability tests and high-pressure catalytic tests revealed the different behaviors and product distributions of both systems.
REACTION KINETICS MECHANISMS AND CATALYSIS
(2022)
Article
Energy & Fuels
Brian Li, Mercedes Gabas, Efrain Ochoa-Martinez, Victor Gonzalez de la Cruz, Mari Cruz Lopez-Escalante, Laura Leon-Reina, Rafael Pena, Pilar Garcia-Diaz, Ivan Garcia, Carlos Algora
Summary: This study investigates the optical and physical properties of common dielectric materials used in solar cells as anti-reflective coatings, such as MgF2, ZnS, Ta2O5, Al2O3 and TiO2, and their relationship with deposition parameters and thicknesses. The results show that the optical properties of these materials are influenced by layer thickness, and different materials exhibit different contamination issues.
Article
Chemistry, Physical
Sarra Roudane, Noureddin Bettahar, Alfonso Caballero, Juan Pedro Holgado
Summary: This study tested the catalytic gas-phase hydrogenation of CO2 into CH4 using three different nickel/aluminate catalysts obtained from hexaaluminate precursors (MAl16O19, M = Mg, Ca, Ba). The catalysts were prepared using a carbon template method, resulting in Ni particles decorating the surface of a porous high surface area matrix. The materials exhibited high conversion of CO2 below 500 degrees C, with CH4 as the main product. The NiBaAlO catalyst showed the highest performance, possibly due to the appropriate distribution of Ni particle size and the presence of BaCO3 acting as a CO2 buffer.
Article
Energy & Fuels
Francisco Platero, Alfonso Caballero, Gerardo Colon
Summary: Cobalt supported TiO2 catalysts were prepared by wet-impregnation and by immobilization over APTES grafted TiO2. The impregnated system showed better catalytic performance after reduction at 260 degrees C, but significant deactivation was observed. In contrast, the functionalized catalyst showed better catalytic performance after reduction at 400 degrees C with notable stability. CO-DRIFT operando analysis revealed that the impregnated system was strongly affected by negative SMSI upon reduction at higher temperature, while immobilization on APTES hindered the loss of metal active sites. The study of spent catalysts indicated that Co was redispersed in the impregnated catalyst while functionalized catalyst tended to form agglomerates.
Article
Chemistry, Multidisciplinary
Arturo Sanz-Marco, Jose L. Hueso, Victor Sebastian, David Nielsen, Susanne Mossin, Juan P. Holgado, Carlos J. Bueno-Alejo, Francisco Balas, Jesus Santamaria
Summary: In this study, photocatalytic gas-phase hydrogenation of CO2 into alkanes was achieved over TiO2-supported Ni nanoparticles under LED irradiation at different wavelengths. The formation of oxygen vacancies, Ti3+ centers, and metallic Ni sites through thermal reduction and operando EPR analysis contributed to the successful reduction of CO2 to produce CO, CH4, and C2H6 at temperatures below 300 degrees C.
NANOSCALE ADVANCES
(2021)
Article
Chemistry, Multidisciplinary
Angeles Lopez-Martin, Francisco Platero, Gerardo Colon, Alfonso Caballero
Summary: Researchers have identified different Mo precursors in the Mo/ZSM-5 catalytic system and clarified their roles in promoting or hindering the transformation of methane into aromatics, providing important experimental basis for improving catalytic efficiency.
REACTION CHEMISTRY & ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
F. Platero, A. Lopez-Martin, A. Caballero, T. C. Rojas, M. Nolan, G. Colon
Summary: Different Cu@Pd-TiO2 systems were prepared using a two-step synthesis method to create a bimetallic co-catalyst for the H-2 photoreforming reaction, resulting in the formation of a core@shell structure. The Cu@Pd-1.0-TiO2 bimetallic system showed higher photocatalytic H-2 production compared to Pd-supported TiO2.
ACS APPLIED NANO MATERIALS
(2021)
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)