Article
Chemistry, Applied
Zhiyu Zhou, Michael P. Harold, Dan Luss
Summary: Simultaneous conversion of NO, CO and C3H6 was carried out on washcoated monoliths containing oxygen storage material-promoted mixed Platinum group metals to evaluate the promotion effects and identify the best architecture. PGM supported directly on the OSM was found to be the best design for one type of OSM, while a dual-layer architecture outperformed the MFO-supported PGM catalyst. Enhancement in conversion efficiency was achieved with the dual-layer PGM-MFO catalyst due to a direct catalytic contribution from the spinel. The study provides insights into the benefits of OSM and guidance for optimizing multi-component PGM + OSM catalyst composition and architecture.
Article
Chemistry, Multidisciplinary
Ayano Taniguchi, Yoshitaka Kumabe, Kai Kan, Masataka Ohtani, Kazuya Kobiro
Summary: Porous ceria was successfully synthesized through a unique solvothermal reaction, resulting in homogeneous and monodisperse spheres with a large surface area. The catalytic performance of the porous ceria exhibited superior and distinct reaction activity compared to commercial CeO2, attributed to the high concentration of Ce3+ and significant oxygen adsorption capacity.
Article
Engineering, Chemical
Georgios Bampos, Theodora Ramantani, Paraskevi Panagiotopoulou, Xenophon E. Verykios
Summary: The study investigated the influence of metal oxide support types on the reactive adsorption of residual CO on Pd-based catalysts, with Pd/ZrO2 showing the best performance in adsorption. The results suggest that both the dispersed metal and the support participate in the process, which could be applied effectively as a final cleanup step in fuel processors.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Review
Chemistry, Physical
Seon-Yong Ahn, Won-Jun Jang, Jae-Oh Shim, Byong-Hun Jeon, Hyun-Seog Roh
Summary: Reducing carbon dioxide emissions is a major global challenge in energy and environmental fields. Catalysis plays a crucial role in addressing this challenge by developing new technologies and improving conventional ones. The review focuses on the extended applications of oxygen storage materials in high-value-added chemicals and their use in carbon-neutral automotive catalysis. The study emphasizes the physico-chemical properties that are closely related to oxygen storage capacity.
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Tingru Chen, Takuya Hasegawa, Yusuke Asakura, Masato Kakihana, Teruki Motohashi, Shu Yin
Summary: The study successfully synthesized YBaCo4O7+delta sample using a glycine-complex decomposition method at a low temperature, and demonstrated its superior oxygen storage performance in temperature swing adsorption process.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Naoki Hashimoto, Kohsuke Mori, Kohei Asahara, Shun Shibata, Hirotaka Jida, Yasutaka Kuwahara, Hiromi Yamashita
Summary: The study found that the nanorod structure of NiOx-decorated CeO2 nanostructured catalysts exhibited superior CO2 methanation activity and CH4 selectivity, as well as exceptional durability compared to nanocube and nanooctahedron structures. The high performance of NiCeO2-NR was attributed to a large quantity of surface oxygen vacancies and the high degree of reversibility associated with the Ce4+ <-> Ce3+ redox cycle of the support.
Article
Chemistry, Physical
Fang Li, Ling Zou, Jian He, Yonghui Wu, Lu Yang, Qingshan Liu, Qianqian Wu, Xiaochao Yang
Summary: A synthesis platform for mesoporous ceria nanoparticles (MCNs) with strong structure tuning capacity was established to explore the relationship between their structure and catalytic activity. Various MCNs were synthesized by altering ligand/precursor ratio, addition manner and reaction temperature, and their structural parameters and catalytic activities were evaluated. Different structure parameters played different roles in controlling catalytic reactions, with pore size and crystallite size affecting oxygen storage capacity (OSC), pore size regulating enzyme mimetic activity, and surface area dominating photocatalytic activity.
JOURNAL OF CATALYSIS
(2021)
Review
Chemistry, Physical
Roman Dziembaj, Marcin Molenda, Lucjan Chmielarz
Summary: Non-stoichiometric CeO2-y, especially in the form of nanocrystal aggregates, has exceptional catalytic activity in redox reactions. It improves the activity of transition metals and their oxides dispersed on it, and serves as an oxygen buffer. The synthesis methods and deposition techniques for these nanomaterials and their applications in redox reactions are comprehensively reviewed in this article, with over 160 references provided for further details.
Article
Nanoscience & Nanotechnology
Maria Pilar Yeste, Juan Carlos Hernandez-Garrido, Michael Uwe Kumke, Sarah Alvarado, Miguel Angel Cauqui, Jose Juan Calvino, Philipp-Alexander Primus
Summary: The use of a catalyst support for the design of nanoscale heterogeneous catalysts based on cerium oxide offers vast possibilities for future catalyst development. In this study, zirconia-supported ceria catalysts were synthesized and characterized. Experimental results show that the formation of reversible reactive pyrochlore structures can be achieved through low-temperature reduction-oxidation pretreatment, without altering the morphology of the catalyst.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Applied
Hugo Perez-Pastenes, Tomas Viveros-Garcia
Summary: This study investigates the correlation between ceria loading in Pt/Al2O3-CeO2 catalysts and the catalytic activity of 1-butanol and toluene oxidation. It is found that the SMSI effect, Pt particle size, and the capacity to store/release oxygen have complex relationships with VOC oxidation activity.
TOPICS IN CATALYSIS
(2022)
Article
Chemistry, Physical
Lais Reis Borges, Anderson Gabriel Marques da Silva, Adriano Henrique Braga, Liane Marcia Rossi, Marco Aurelio Suller Garcia, Pedro Vidinha
Summary: Different surface energies of CeO2 nanowires and nanocubes affect the Pt distribution and interaction, leading to varying catalytic performance. The H-2-reduction treatment improves the catalysis of Pt/CeO2 nanowires, but does not surpass the nanocubes-based catalyst, highlighting the complex combination of material characteristics in determining catalyst performance.
Article
Chemistry, Analytical
Xinyu Li, Pengcheng Xu, Yufan Zhou, Ying Chen, Hao Jia, Haitao Yu, Xinxin Li
Summary: The microcantilever-based in situ H2-TPR technology accurately measures the mass change caused by reduction of catalysts, and it has the advantages of simplified operation and high precision.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Chang-Hoon Jeong, Kyung-Won Jeon, Hui-Ju Byeon, Tae-Yeol Choi, Hak-Min Kim, Dae-Woon Jeong
Summary: In this study, Nb promoter was introduced in the Co-CeO2 catalyst to enhance its catalytic performance in the high temperature water gas shift reaction. The effect of Nb loading amount on catalyst performance was further investigated, with 1.5NbCo catalyst showing the highest catalytic performance. The high catalytic performance of this catalyst was attributed to its high OSC and Co dispersion.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Energy & Fuels
Eduardo Poggio-Fraccari, Antonella Abele, Nicolas Zitta, Javier Francesconi, Fernando Marino
Summary: The combination of Water Gas Shift (WGS) and CO preferential oxidation (COPROX) reactions is considered effective for CO removal in H-2 feed for PEM fuel cells. Monolithic catalysts coated with Ce or Ce-Pr and Cu or Cu-Ni showed promising results with a 35% mass increase. Adjusting the Pr content in WGS monoliths and using Cu/ceria monolithic samples for COPROX resulted in optimal activity-selectivity ratios. Operating at around 130 degrees C with a contact time of 0.1 g.s/cm^3 and an O-2/CO = 1 M ratio was found to be the most suitable parameters set.
Article
Engineering, Chemical
Miki Inada, Junichi Hojo
Summary: In this study, CeO2-ZrO2 solid solution particles were prepared by a spray pyrolysis method, and the addition of organic additives was effective in increasing the specific surface area and forming a uniform solid solution structure, thereby enhancing the oxygen storage capacity.
ADVANCED POWDER TECHNOLOGY
(2022)
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)