Article
Nanoscience & Nanotechnology
Junjie Chen, Hien N. Pham, Tala Mon, Todd J. Toops, Abhaya K. Datye, Zhenglong Li, Eleni A. Kyriakidou
Summary: Catalytic oxidation of CH4 over nonprecious Ni/CeO2 catalysts with different CeO2 support morphologies (nanoparticles (P), rods (R), cubes (C)) and synthetic procedures (precipitation, sol-gel (SG)) was studied. The relationship among CeO2 morphologies, redox properties, surface areas, and CH4 oxidation activity was established. CeO2-R support showed higher oxygen vacancies, improved OSC and CH4 oxidation activity compared to CeO2-P and CeO2-C supports. The same activity pattern was observed for Ni containing catalysts (Ni/CeO2-R > Ni/CeO2-P > Ni/CeO2-C). Increasing CeO2 surface area by sol-gel synthesis method (CeO2-SG) improved the CH4 oxidation performance of CeO2-SG and Ni/CeO2-SG compared to CeO2-R and Ni/CeO2-R, respectively. All studied Ni/CeO2 nanocatalysts showed improved hydrothermal stability compared to conventional Pd/Al2O3.
ACS APPLIED NANO MATERIALS
(2023)
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
Lichao Ma, Chuanmin Ding, Junwen Wang, Hong Xu, Kan Zhang
Summary: Reasonable design and construction of Pt/CeO2-based catalysts and detailed exploration of relationship between its structural characteristics and the catalytic activity are crucial to improve the catalytic performance and reduce the cost.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Lyubov Isupova, Evgeny Gerasimov, Igor Prosvirin, Vladimir Rogov
Summary: LaFe0.4Ni0.6O3/CeO2 (1:1) two-phase composite materials were prepared by mechanochemical and Pechini routes. The catalytic properties of the composites in methane and CO oxidation reactions strongly depend on their preparation conditions. In low-temperature catalytic CO oxidation, the composites demonstrate higher activity compared with LaFe0.4Ni0.6O3 perovskite, with the highest activity observed for the composite prepared by mechanical treatment of perovskite and fluorite precursors. In high-temperature catalytic methane oxidation, the activity correlates with the reducibility of the samples, with the highest activity observed for the composite prepared by the one-pot Pechini route with higher reducibility up to 600 degrees C.
Article
Chemistry, Physical
Hanan A. Ahmed, Ahmed E. Awadallah, Ateyya A. Aboul-Enein, Sanaa M. Solyman, Noha A. K. Aboul-Gheit
Summary: The study developed and examined bimetallic Ni-Mo catalysts supported on CeO2 and CeO2-SiO2 for CH4 decomposition, revealing the influence of SiO2 on catalytic efficiency. Ni-Mo/CeO2 catalyst demonstrated exceptional decomposition behavior and durability, with high hydrogen yield.
Article
Chemistry, Inorganic & Nuclear
V. LaParola, G. Pantaleo, Anna Venezia
Summary: This review examines the impact of preparation methods, types of carrier, different catalysts, and support structures on the CH4 catalytic partial oxidation (CPO) activity of supported Ni catalysts, based on research results obtained by the group over the last five years. It discusses the structural effects of Ni supported on La2O3, CeO2, and mixed CeO2-La2O3, as well as the influence of active and inert oxide carriers on metal dispersion, reducibility, and carbon formation. The importance of the interaction between support and active metals in determining surface distribution of active sites and final catalytic activity is emphasized through various case studies.
INORGANICA CHIMICA ACTA
(2022)
Article
Chemistry, Physical
Olga A. Stonkus, Andrey V. V. Zadesenets, Elena M. Slavinskaya, Andrey I. Stadnichenko, Valery A. Svetlichnyi, Yury V. V. Shubin, Sergey V. V. Korenev, Andrei I. Boronin
Summary: 1%Pd/CeO2-SnO2 catalysts with varying Ce/Sn ratio were synthesized and their thermal stability and activity were studied. The catalysts with Ce/Sn < 3/1 exhibited high thermal stability and low-temperature activity. The catalyst with high tin content (Ce/Sn = 1/3) showed good activity in CH4 oxidation.
CATALYSIS COMMUNICATIONS
(2022)
Article
Engineering, Chemical
Giuseppe Pantaleo, Valeria La Parola, Maria Luisa Testa, Anna Maria Venezia
Summary: Ni catalysts with different tin doping levels were prepared using microwave-assisted precipitation methods for dry reforming of methane with CO2. The results showed that tin doping can reduce carbon deposition but also lead to a decrease in activity, while different tin doping methods have varying effects on catalytic activity and stability.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Physical
Pablo G. Lustemberg, Zhongtian Mao, Agustin Salcedo, Beatriz Irigoyen, M. Veronica Ganduglia-Pirovano, Charles T. Campbell
Summary: Research has shown that cationic Ni atoms in clusters at step edges on the CeO2(111) surface are the most active sites for methane conversion reactions, with their small size and high Ni chemical potential contributing to their activity. Density functional theory calculations have clarified the reasons behind this observation, highlighting the importance of the size and morphology of supported Ni nanoparticles, strong Ni-support bonding, and charge transfer at step edges for high catalytic activity, particularly in the activation barrier for C-H bond cleavage during CH4 dissociative adsorption. This knowledge is expected to inspire the development of more efficient catalysts for these reactions.
Article
Chemistry, Physical
Abbas Khaleel, Abdul Rasheed Pillantakath, Abdulmuizz Adamson
Summary: Coking is a major cause of catalyst deactivation in catalytic methane reforming processes. Doping the support of Ni/g-Al2O3 catalysts with iron was found to significantly enhance coking resistance in methane partial oxidation, mainly due to the redox functionality of iron after reduction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Jessica A. de Oliveira, Jean C. da Cruz, Otaciro R. Nascimento, Caue Ribeiro
Summary: In this study, the authors propose that the efficient partial photooxidation of methane to methanol depends on specific band edge positions in photocatalysts. They demonstrate this hypothesis using Bi2O3 as a semiconductor and show that it exhibits favorable valence band properties for .OH production and unfavorable conduction band properties for O-2.-, which is crucial for maintaining an available O-2 level for .CH3 capture and methanol formation. Experimental results reveal that Bi2O3 is capable of selectively converting methane to methanol under visible light at room temperature and pressure, with productivity reaching approximately 3771 mu mol g(-1) h(-1) and around 65% selectivity, thus avoiding over-oxidation to CO2. Isotope labeling experiments and ESR measurements confirm methane as the carbon source for methanol generation and the presence of .CH3 and .OH. Bi2O3 also demonstrates good stability after multiple cycles, maintaining high and selective methanol production. These findings provide important insights into critical properties of photocatalysts for the partial photooxidation of methane to methanol.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Sangbeom Yoo, Eunwon Lee, Gyu Hyun Jang, Do Heui Kim
Summary: In this study, Pd/CeO2 catalysts were prepared using different Pd precursors and their effects on catalytic activity were investigated. The catalyst prepared using palladium nitrate showed high activity for CH4 oxidation, while the catalyst prepared using palladium acetate exhibited high activity for CO oxidation. This difference in activity can be attributed to the variation in Pd dispersion and state caused by different precursors.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Nat Phongprueksathat, Thanakorn Thanasujaree, Vissanu Meeyoo, Thirasak Rirksomboon
Summary: Autothermal reforming (ATR) is a viable option for reducing coke formation and energy consumption in hydrogen production processes. The presence of co-fed oxygen in ATR significantly decreases the overall amount of coke formation, but also changes the coke structure. These findings can contribute to a better understanding of the mechanism of ATR reactions.
REACTION CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Huafan Li, Nan Zhou, Tianli Zhu, Hailian Tang, Guoyi Bai
Summary: This study reported a Ni-catalyst supported on H2O2 modified nanodiamonds (NDs) which exhibited much improved catalytic activity and stability for the phenol hydrogenation reaction compared to the other two catalysts with untreated NDs and high temperature N-2 treated NDs as supports. The interaction between the ND support and nickel species was enhanced by simple H2O2 pretreatment while maintaining the excellent structural stability of the ND. This study emphasizes the importance of support selection and pretreatment, and offers new insights for the design and development of supported catalysts.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Jung-Hyun Park
Summary: The effect of H2O2 treatment on the catalytic activity of a PdO-based catalyst for methane oxidation was investigated. The results showed that the H2O2-treated catalysts exhibited improved catalytic activity in dry or water vapor conditions. The enhancement was attributed to increased surface exposure of PdO, facilitating reduction and desorption, as well as the formation of strong acid sites.
REACTION KINETICS MECHANISMS AND CATALYSIS
(2022)
Article
Chemistry, Inorganic & Nuclear
V. LaParola, G. Pantaleo, Anna Venezia
Summary: This review examines the impact of preparation methods, types of carrier, different catalysts, and support structures on the CH4 catalytic partial oxidation (CPO) activity of supported Ni catalysts, based on research results obtained by the group over the last five years. It discusses the structural effects of Ni supported on La2O3, CeO2, and mixed CeO2-La2O3, as well as the influence of active and inert oxide carriers on metal dispersion, reducibility, and carbon formation. The importance of the interaction between support and active metals in determining surface distribution of active sites and final catalytic activity is emphasized through various case studies.
INORGANICA CHIMICA ACTA
(2022)
Article
Chemistry, Physical
Valeria La Parola, Leonarda Francesca Liotta, Giuseppe Pantaleo, Maria Luisa Testa, Anna Maria Venezia
Summary: Two series of catalysts containing nickel supported on silica modified by TiO2 and ZrO2 were tested in the dry reforming of methane (DRM). The results showed that doping silica with titanium oxide increased the methane conversion and catalytic stability, while the presence of zirconium had little effect. After the catalytic test, all the catalysts formed carbon, but to a lesser extent for the ones with grafted supports. Structural characterization confirmed the better structural stability of the nickel particles supported on the sol-gel doped silica, explaining the improvement of catalytic stability during the DRM reaction.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Organic
Alessandro Mercadante, Vincenzo Campisciano, Anthony Morena, Laura Valentino, Valeria La Parola, Carmela Aprile, Michelangelo Gruttadauria, Francesco Giacalone
Summary: Carbon nanotubes were covalently functionalized by reacting with aryl radicals obtained from 4-aminocatechol, leading to the formation of catechol-Pd complexes on the surface. These complexes were reduced to Pd nanoparticles, resulting in a hybrid material with a palladium loading of 20.3 wt %. The hybrid material showed catalytic activity in Suzuki and Heck reactions, being recyclable for at least 9 cycles in the latter process, with the Pd nanoparticles increasing in size with each reuse.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Ekaterina Kulchakovskaya, Svyatoslav S. Dotsenko, Leonarda F. Liotta, Valeria La Parola, Sergey Galanov, Olga Sidorova, Olga V. Vodyankina
Summary: This study reports the synergistic effect of OMS-2 catalysts with Fe modifiers and Ag impregnation in ethanol oxidation. The results show that Ag and Fe modifiers can enhance the reoxidation ability and amount of adsorbed oxygen species, resulting in improved activity and selectivity in the ethanol oxidation reaction.
Article
Chemistry, Applied
L. Consentino, Giuseppe Pantaleo, V. La Parola, C. Migliore, E. La Greca, Leonarda Francesca Liotta
Summary: Mn-WO3/TiO2 catalysts with different Mn loadings (1.5-3-12 wt%) were synthesized and compared with 8wt%WO3/TiO2 and bare MnOx oxide. The 1.5wt%Mn-8wt%WO3/TiO2 catalyst exhibited the highest performance in NO conversion and N-2 selectivity, with good thermal stability. The substitution of toxic vanadium with MnOx in the 1.5wt%Mn-8wt%WO3/TiO2 catalyst is an important achievement in improving environmental sustainability.
TOPICS IN CATALYSIS
(2023)
Article
Chemistry, Physical
Benjamin H. Christensen, Francesca Deganello, Valeria La Parola, Mads K. Jorgensen, Vittorio Boffa, Martin B. ostergaard
Summary: Perovskite-type LaCo1-xNixO3-delta powders (x = 0, 0.2, 0.4, 0.6, and 0.8) were synthesized and characterized for their crystal structure, morphology, texture, and surface properties. The catalytic performance of these perovskites was investigated using UV-Vis spectroscopy and it was found that they can effectively degrade rhodamine B in a short period of time. The Co(II)/Co(III) redox couple was identified as the key parameter in the degradation process.
Article
Chemistry, Inorganic & Nuclear
Davide Palma, Francesca Deganello, Leonarda Francesca Liotta, Valeria La Parola, Alessandra Bianco Prevot, Mery Malandrino, Enzo Laurenti, Vittorio Boffa, Giuliana Magnacca
Summary: The influence of synthesis and processing parameters on the thermocatalytic performance of Ce-doped SrFeO3 inorganic perovskites was investigated to improve reproducibility and reliability. Analysis revealed that strict control of synthesis parameters is crucial for optimizing the thermocatalytic properties. The best synthesis conditions include full gelification of the sol, an overstoichiometric reducer-to-oxidizer ratio, a nominal cerium content of 15 mol%, pH 6, and thermal treatment at 800 °C/2 h.
Article
Chemistry, Multidisciplinary
Vincenzo Campisciano, Laura Valentino, Maria Laura Alfieri, Valeria La Parola, Alessandra Napolitano, Francesco Giacalone, Michelangelo Gruttadauria
Summary: This study successfully functionalized SWCNTs by reacting with dopamine azide at high temperature while maintaining the integrity of the pi-network. The properties and composition of the functionalized material were characterized using various techniques, and palladium species were immobilized for use as a catalyst in reduction and Heck reactions.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Emanuela Calcio Gaudino, Maela Manzoli, Maria Luisa Testa, Valeria La Parola, Giorgio Grillo, Giancarlo Cravotto, Elisa Acciardo, Silvia Tabasso
Summary: This paper presents a sustainable and efficient protocol for the conversion of levulinic acid into N-substituted pyrrolidones using microwave-assisted catalytic reactions. The authors optimized the reaction conditions using tailor-made catalysts supported on highly mesoporous silica or titania-doped HMS, achieving good-to-excellent yields. Furthermore, they successfully scaled up the reaction using a microwave-assisted flow reactor and green solvents. This new method shows promise for industrial applications, while minimizing the use of toxic organic solvents.
Article
Chemistry, Multidisciplinary
Martin Bonderup Ostergaard, Andreas Veis, Francesca Deganello, Vittorio Boffa, Mads Koustrup Jorgensen
Summary: The limited access to clean water is due to an increasing amount of persistent organic pollutants (POPs), which cannot be completely removed by current methods. Therefore, new treatment technologies for surface water and wastewater are required. This study combines membrane filtration and thermocatalytic chemical oxidation of POPs into one step, using a perovskite-type catalyst incorporated into an alumina membrane. The results demonstrate the great potential of thermocatalytic membranes for continuous membrane filtration and simultaneous degradation of POPs.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Maria V. Grabchenko, Natalia V. Dorofeeva, Valery A. Svetlichnyi, Yurii V. Larichev, Valeria La Parola, Leonarda Francesca Liotta, Sergei A. Kulinich, Olga V. Vodyankina
Summary: The dry reforming of methane using supported Ni catalysts on SBA-15 modified by CeMnOx mixed oxides with different Ce/Mn ratios has been studied. The modification enhances the catalytic performance and stability, with the catalyst at a Ce/Mn ratio of 9 achieving the best results.
Article
Chemistry, Multidisciplinary
Barbara R. Gomes, Joana L. Lopes, Lorena Coelho, Mattia Ligonzo, Monica Rigoletto, Giuliana Magnacca, Francesca Deganello
Summary: SiO2@TiO2 core-shell nanoparticles were synthesized via a simple and low-cost method and exhibited enhanced adsorption and photodegradation properties for methylene blue under UV light. The nanoparticles showed superior performance compared to calcined SiO2@TiO2 and TiO2 samples. The synergy between the photocatalytic properties of TiO2 and the adsorptive properties of SiO2 contributed to the improved performance.
Article
Chemistry, Multidisciplinary
Martin B. Ostergaard, Francesca Deganello, Valeria La Parola, Leonarda F. Liotta, Vittorio Boffa, Mads K. Jorgensen
Summary: Ce-doped SrFeO3 perovskite-type compounds are effective thermocatalysts for degrade wastewater contaminants. The effects of cerium excess on the properties and thermocatalytic activity of Sr0.86Ce0.14FeO3-CeO2 perovskite-oxide systems were investigated. The introduction of a larger cerium excess enhances the perovskite performance, and the oxygen mobility and reducibility contribute to the superior thermocatalytic properties of these perovskite oxide-based systems.
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)
