Article
Chemistry, Inorganic & Nuclear
Tanna Elyn Rodrigues Fiuza, Danielle Santos Goncalves, Daniela Zanchet
Summary: CeO2, when used as a promoter, enhances catalytic activity, but its impact on CeOx species and Cu reincorporation into the Au lattice in AuCu/SiO2 catalysts is crucial for the activity and stability of the CO-PROX reaction.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Lyuba Ilieva, Ivan Ivanov, Janusz W. Sobczak, Wojciech Lisowski, Daniela Karashanova, Zbigniew Kaszkur, Petya Petrova, Tatyana Tabakova
Summary: The study explores the performance of catalysts prepared by different synthesis methods for the water-gas shift (WGS) reaction. It is found that catalysts prepared by mechanochemical mixing show better performance in the WGS reaction compared to those prepared by impregnation. Additionally, the introduction of yttria doping has a positive effect on catalyst performance. The study is significant for the development of WGS catalysts with good performance and economic benefits, aiming to improve hydrogen purity for small-scale applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Aggeliki Papavasiliou, Benedetta Oliani, Mirko Scanferla, Elias Sakellis, Antonella Glisenti, Paolo Canu, Fotis K. Katsaros
Summary: Mesoporous multicomponent materials based on alumina are synthesized through a facile evaporation-induced-self-assembly method. The addition of citric acid is found to be crucial in obtaining high mesoscopic order and notable homogeneity. After thermal aging, the distribution of metal oxides and nanoporous nature are well-preserved, with a parallel nucleation of ceria nanoparticles into the semi-crystalline framework. The catalytic activity is drastically enhanced, especially for the Cu-Ce-Al system, due to the material's structural reconstruction and its effect on metal-support interaction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Igor Yu. Kaplin, Ekaterina S. Lokteva, Konstantin I. Maslakov, Artem V. Tikhonov, Andrey N. Kharlanov, Alexander V. Fionov, Alexey O. Kamaev, Oksana Ya. Isaikina, Sergey V. Maksimov, Elena V. Golubina
Summary: This study focused on the synthesis and characterization of mesoporous CeO2-SiO2 catalysts with different Ce:Si ratios, as well as the addition of copper for modification, to understand their effects on CO-PROX reactions. The catalyst with an equimolar Ce:Si ratio showed better catalytic performance, while CuOx/CeSiO (Ce:Si=4:1) exhibited superior low-temperature activity, CO2 selectivity, and stability due to its unique structure and properties.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Amar Bendieb Aberkane, Maria Pilar Yeste, Faycal Djazi, Miguel Angel Cauqui
Summary: In this study, a series of NiO-CeO2 mixed-oxide catalysts were prepared using a modified co-precipitation method. The influence of the preparation method and pH value on the properties of the catalysts were investigated. The catalyst prepared at a higher pH value exhibited better performance in the CO methanation reaction.
Article
Chemistry, Physical
Masaki Koishi, Masashi Kotobuki
Summary: The preparation of Y-LLZ solid electrolyte by the co-precipitation method is studied for the first time, resulting in well-sintered Y-LLZ particles with high Li ion conductivity. The sintering temperature of Y-LLZ can be lowered by using this method.
Article
Chemistry, Physical
M. R. Kosinski, A. J. Vizcaino, L. M. Gomez-Sainero, A. Carrero, R. T. Baker
Summary: Catalysts of 2 wt% Pd/Sm-doped Ceria were prepared and evaluated for hydrogen production by methanol reforming. Among the three preparation methods, Method B resulted in the best activity and CO2 selectivity due to the superior nanostructure of the catalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Yong Yan, Roong Jien Wong, Zhirui Ma, Felix Donat, Shibo Xi, Syed Saqline, Qianwenhao Fan, Yonghua Du, Armando Borgna, Qian He, Christoph R. Muller, Wei Chen, Alexei A. Lapkin, Wen Liu
Summary: The catalytic hydrogenation of CO2 to methanol can be improved by doping tungsten into CeO2, resulting in a Cu/CeW0.25Ox catalyst with enhanced activity and selectivity. Experimental investigation reveals that this promotion effect is attributed to the reduction of Ce4+ to Ce3+ by W-doping, the suppression of oxygen vacancy formation on CeO2, and the activation of the formate pathway for CO2 hydrogenation. This catalyst design strategy differs from conventional CeO2-supported catalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
J. C. Martinez-Munuera, J. Gimenez-Manogil, M. P. Yeste, A. B. Hungria, M. A. Cauqui, A. Garcia-Garcia, J. J. Calvino
Summary: The preferential oxidation of CO in H-2-rich mixtures was studied using Cu catalysts supported by Ce0.8Zr0.2O2 with increasing copper content (1 wt% Cu1/CZ, 2 wt% Cu2/CZ, and 4 wt% Cu4/CZ). The most active catalyst in the CO-PROX reaction at low temperatures was found to be Cu1/CZ, despite having a lower copper content. The results were discussed and correlated with the catalysts' textural properties and parameters such as metal dispersion and interfacial active sites.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Shiyu Fang, Yan Sun, Jiacheng Xu, Tiantian Zhang, Zuliang Wu, Jing Li, Erhao Gao, Wei Wang, Jiali Zhu, Lianxin Dai, Weihua Liu, Buhe Zhang, Junwei Zhang, Shuiliang Yao
Summary: In this study, CeO2 doped with Ni, Mn, and Y catalysts were used to investigate the effect of doping on CO oxidation. The results showed that doping with Ni and Mn had a positive effect on activity, while doping with Y had a negative effect. The effects of different dopants were found to be additive. Surface factors obtained from operando DRIFTS-MS analysis and structure factors from XPS and Raman analyses were strongly correlated with CO oxidation reactivities.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Srisin Eaimsumang, Nuwong Chollacoop, Apanee Luengnaruemitchai, Stuart H. Taylor
Summary: This study demonstrates a simple hydrothermal synthesis approach for preparing CeO2-supported gold (Au) catalysts, which exhibit enhanced catalytic performance in oxidation reactions when the reducibility of CeO2 support increases and the number of adsorbed peroxide species on the support increases due to Au addition.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Xue Bian, Hanying Jia, Ming Cai, Peng Cen, Yuting Bai, Wenyuan Wu
Summary: The study of CeO2-Fe2O3 catalysts showed that the addition of CeO2 reduced the reaction temperature and improved NO conversion. With increasing Ce/Fe ratio, the main phase of the catalyst transformed gradually from iron oxide to ceria, and the specific surface area increased, enhancing the redox capacity and adsorption properties. The in situ infrared surface catalyst reaction involved a combination of the Langmuir-Hinshelwood mechanism and the Eley-Rideal mechanism, which improved denitration performance.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Arantxa Davo-Quinonero, Sergio Lopez-Rodriguez, Cristian Chaparro-Garnica, Iris Martin-Garcia, Esther Bailon-Garcia, Dolores Lozano-Castello, Agustin Bueno-Lopez, Max Garcia-Melchor
Summary: The study investigates the CO-H2 interactions on ceria surfaces during CO-PROX reaction and reveals that hydroxyl groups induce surface defects, increasing the COx-catalyst interaction. High OH coverages facilitate the formation of unstable HCOx products, which are key in preventing surface poisoning.
Article
Chemistry, Applied
Hao Wang, Yongke Hou, Yongqi Zhang, Meisheng Cui, Fang Chen, Xiaowei Huang, Juanyu Yang, Zongyu Feng
Summary: This study reports a simple and facile approach to prepare a SO42--modified La, Y-doped ceria-zirconia material with high oxygen storage capacity. The modified material exhibited a 1.6 times higher oxygen storage capacity compared to the unmodified material, and also showed improved catalytic activities and stability.
JOURNAL OF RARE EARTHS
(2022)
Article
Chemistry, Physical
Parag M. M. Shah, Liam A. Bailey, Stuart H. Taylor
Summary: A series of ceria-manganese mixed metal oxide catalysts with different Ce:Mn ratios were prepared by coprecipitation, and their capabilities for total oxidation of propane and naphthalene were evaluated. The catalyst with a higher manganese content showed the highest activity, specifically Ce0.25Mn0.75Ox. Characterization techniques revealed that the high activity of Ce0.25Mn0.75Ox was attributed to the formation of phase-separated Mn-substituted ceria and Mn2O3 phases. The catalyst preparation technique also played a significant role, as the mechanochemical and urea catalysts exhibited greater activity than the carbonate coprecipitated catalyst.
Article
Chemistry, Physical
Tatyana Tabakova, Margarita Gabrovska, Dimitrinka Nikolova, Ivan Ivanov, Anna Maria Venezia, Krassimir Tenchev
Summary: The water-gas shift (WGS) reaction is an important industrial process for hydrogen production. This study investigated the promotive effects of Au, Cu, or Re in Ni-Al WGS catalysts, as well as the modification by ceria. The results showed that the Au-promoted Ni-Al catalyst modified with ceria exhibited the best performance with 99.7% CO conversion at 220 degrees C. Although the Au-containing CeO2-modified catalyst outperformed Cu and Re-promoted analogues, the stability of the Re-containing sample and the enhanced activity of the Cu-based sample under different reaction conditions showed promising results. Further investigations on improving catalyst performance are warranted.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
David Ramirez-Ortega, Diana Guerrero-Araque, Jhon Harrison Sierra-Uribe, Roberto Camposeco, Ricardo Gomez, Rodolfo Zanella
Summary: Energy states and surface plasmon resonance (SPR) are important factors in improving photo-catalytic processes and power generation energy. The inclusion of Au in Au/ZrO2-TiO2 heterostructures with different Au loadings can modulate SPR and improve interfacial charge transport and photocatalytic activity for hydrogen production. The study found that increasing Au loading up to 5 wt.% led to significantly enhanced photoactivity and four times more hydrogen production compared to the base material. This enhancement is attributed to the adjustment of Fermi level values, the creation of energy states, and the role of Au metallic nanoparticles as electronic reservoirs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
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
Multidisciplinary Sciences
Maciej Zielinski, Zbigniew Kaszkur, Wojciech Juszczyk, Janusz Sobczak
Summary: With decreasing size of crystals, the surface structure of nanocrystalline materials, such as nanocrystalline gold supported on ceria, becomes important and affects the powder diffraction pattern. This study reveals the changes in background pattern, peak positions, and Au peak intensity, and suggests a multiply twinned structure of gold and high mobility of Au atoms on the surface of ceria. The results also show reversible shifts in CeO2 peak positions, indicating internal alternations of the CeO2 crystal structure.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
Tatyana Tabakova, Petya Petrova, Yordanka Karakirova, Georgi Avdeev, Elitsa Kolentsova, Lyuba Ilieva
Summary: This study focuses on the complete oxidation of benzene as a probe reaction for the elimination of volatile organic compounds (VOCs) using alumina-supported CuO-CeO2 mixed oxide promoted by gold. The catalyst showed high activity and stability in achieving the complete oxidation of benzene at lower temperatures, indicating its potential in developing efficient catalytic materials for atmospheric pollutant abatement.
Article
Chemistry, Physical
Roberto Camposeco, Salvador Castillo, Rodolfo Zanella
Summary: The catalytic oxidation of C3H8 and CO by Pd nanoparticles supported on MnOx/TiO2 synthesized by the sol-gel method was investigated. The results showed a strong interaction between Pd and MnOx/TiO2, and the annealing temperature of the TiO2 support influenced the catalytic properties of the Pd-MnOx/TiO2 catalyst. The catalysts with 1 and 2 wt% of Pd loading supported on MnOx/TiO2 exhibited excellent catalytic activity for the oxidation of C3H8 and CO at different temperature intervals.
Article
Chemistry, Multidisciplinary
Margarita Gabrovska, Dimitrinka Nikolova, Hristo Kolev, Daniela Karashanova, Peter Tzvetkov, Blagoy Burdin, Emiliya Mladenova, Daria Vladikova, Tatyana Tabakova
Summary: This study investigates the use of yttrium-doped barium cerate (BCY15) as a ceramic matrix for obtaining Ni/BCY15 anode cermet in proton-conducting solid oxide fuel cells (pSOFC). The preparation of Ni/BCY15 cermets in different mediums (deionized water and ethylene glycol) and subsequent high temperature treatment was analyzed in terms of the resistance of metallic Ni in the anode catalysts. The presence of residual metallic Ni in the ethylene glycol medium was experimentally confirmed, which indicated a higher resistance to oxidation and contributed to the stability of the Ni/BCY15-EG-1100 anode cermet.
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, Physical
Michele Casiello, Stefano Savino, Marina Massaro, Leonarda Francesca Liotta, Giuseppe Nicotra, Carlo Pastore, Caterina Fusco, Antonio Monopoli, Lucia D'Accolti, Angelo Nacci, Serena Riela
Summary: In this study, Halloysite material was modified and used as a support for ZnO nanoparticles, which were then employed as a catalyst for FAMEs production. The recyclability of the nanomaterial was investigated and reaction conditions were optimized using experimental design approach. A screening of different clay minerals was also performed and Hectorite, chosen as a model 2:1 clay mineral, was covalently modified and tested as a catalyst in the esterification of FFAs.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Victor Deboos, Carla Calabrese, Jean-Marc Giraudon, Rino Morent, Nathalie De Geyter, Leonarda Francesca Liotta, Jean-Francois Lamonier
Summary: Cu (10 wt%) materials were prepared on silica nanotubes via two synthetic approaches, co-synthesis and wetness impregnation. The Cu-based silica nanotubes showed the best performance in toluene oxidation, with a lower T-50 (306 °C) compared to the reference catalyst (345 °C). The excellent catalytic properties were attributed to the finely dispersed copper (II) species on the surface of silica nanotubes.
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
Hanane Mahir, Younes Brik, Abdallah Benzaouak, Eleonora La Greca, Luca Consentino, Mohamed Kacimi, Adnane El Hamidi, Leonarda Francesca Liotta
Summary: Co/TiO2 catalysts with different cobalt loadings were prepared and the effect of calcination temperature on catalytic performance was investigated. Co(7.5)/TiO2 exhibited the highest selectivity to ethylene, and the presence of water in the reaction mixture influenced the overall conversion and selectivity. Characterizations by various techniques were carried out to analyze the catalysts.
CHEMISTRY-SWITZERLAND
(2023)
Article
Environmental Sciences
Roberto Camposeco, Omar Miguel, Ana E. Torres, Daniela E. Armas, Rodolfo Zanella
Summary: Ruthenium catalysts supported on TiO2 were synthesized and tested for the catalytic oxidation of C3H8. The catalytic activity and physicochemical properties of the catalysts were investigated, and the effects of ruthenium loading, particle size, and support interaction on the catalytic performance were studied. The results showed that the 2 wt. % Ru/TiO2 catalyst exhibited the highest catalytic reactivity, and the stability and reusability of the catalyst were also demonstrated.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
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, Multidisciplinary
Ilia Smirnov, Zbigniew Kaszkur, Armin Hoell
Summary: The appearance of twin/stacking faults in nanoparticles affects their catalytic, optical, and electrical properties. However, there is a lack of experimental tools for characterizing these defects numerically, leading to poor understanding of structure-property correlations. In this study, we explored the twinning effect on XRD pattern and developed a new approach based on the mutual orientation of periodic fcc segments. By performing computational simulations, we found a correlation between the number of domains and the height ratio of 220 to 111 diffraction peaks. Our XRD analysis of Au and AuPt samples, compared with TEM and SAXS analyses, demonstrates the potential of our multidomain XRD method in studying structure-property correlations in nanomaterials.
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)
