Article
Chemistry, Physical
Begona Sellers-Anton, Esther Bailon-Garcia, Arantxa Davo-Quinonero, Dolores Lozano-Castello, Agustin Bueno-Lopez
Summary: PrOx nanoparticles exhibit high catalytic activity in soot combustion, attributed to their high surface area, low crystal size, and improved reducibility. After aging, PrOx nanoparticles maintain high activity compared to other aged catalysts, highlighting their superior performance in long-term stability.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Begona Sellers-Anton, Esther Bailon-Garcia, Arantxa Davo-Quinonero, Dolores Lozano-Castello, Agustin Bueno-Lopez
Summary: A Ce(0.5)Pr(0.5)Ox soot combustion catalyst with both high activity and thermal stability has been developed by combining Ce(0.5)Pr(0.5)Ox nanoparticles and MS-macroporous structures. The hybrid catalyst showed a significant decrease in soot combustion temperature compared to the uncatalyzed reaction, and the thermal aging only slightly affected its performance. The Ce(0.5)Pr(0.5)Ox nanoparticles provided high activity, while the MS structure improved the contact between the catalyst and soot particles.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Aila O. Santos, Lara D. Martins, Jose Henrique S. Mezavila, Jilder D. P. Serna, Noemi R. Checca, Andre V. H. Soares, Caio Machado Fernandes, Eduardo A. Ponzio, Julio Cesar M. Silva, Odivaldo C. Alves
Summary: In this study, the temperature dependence of the magnetic properties of ceria nanoparticles with cubic morphology was systematically investigated. Magnetization measurements and electron paramagnetic resonance (EPR) spectroscopy revealed both ferromagnetic and paramagnetic behavior in CeO2 nanoparticles. The temperature dependence of the broad line in EPR spectra indicated a magnetic transition at approximately 50 K, which was attributed to the condensation of surface oxygen and the extinction of oxygen vacancies. This result further confirmed the relationship between oxygen vacancies and ferromagnetic behavior in CeO2 nanoparticles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Chemistry, Multidisciplinary
Petr Rozhin, Michele Melchionna, Paolo Fornasiero, Silvia Marchesan
Summary: Ceria (CeO2) nanostructures are well-known for their catalytic properties and are now also gaining attention for biological applications. Using biotemplates to control ceria morphology and reactivity is a growing area of research.
Article
Chemistry, Multidisciplinary
Xiaoyang Cheng, Xiaotian Jiang, Shuhu Yin, Lifei Ji, Yani Yan, Guang Li, Rui Huang, Chongtai Wang, Honggang Liao, Yanxia Jiang, Shigang Sun
Summary: In order to achieve Fe-N-C materials with both high activity and durability in proton exchange membrane fuel cells, it is necessary to overcome the attack of free radicals on Fe-N-4 sites. In this study, CeO2 nanoparticles were anchored as radicals scavengers adjacent to the Fe-N-4 sites to effectively eliminate radicals at the source and mitigate degradation. The CeO2 scavengers in the Fe-NC/Sca(ad-CeO2) achieved about 80% elimination of the radicals generated at the Fe-N-4 sites. A fuel cell prepared with the Fe-NC/Sca(ad-CeO2) showed a smaller peak power density decay after 30,000 cycles, reducing the decay from 69% to 28% compared to Fe-NCPhen.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Energy & Fuels
Jishuang He, Peng Yao, Jing Qiu, Hailong Zhang, Yi Jiao, Jianli Wang, Yaoqiang Chen
Summary: Ce0.5Zr0.5O2 catalysts promoted by multivalent transition metal (Mn, Fe, Co) oxides were prepared to accelerate soot combustion. It was found that Mn and Co-doped catalysts significantly improved catalytic activity, while Fe-doped catalyst had a minor effect. Further characterization revealed that active oxygen species and oxygen vacancies played significant roles in enhancing soot combustion, especially for Mn and Co. Co-doped catalyst also exhibited excellent NO-NO2 conversion capacity, leading to reduced soot ignition temperature, whereas Fe-doped catalyst showed weaker NO oxidation performance due to abundant adsorbed carbonates.
Article
Energy & Fuels
Jiangjun Wei, Chenyang Fan, Yuan Zhuang, Zheng Fu, Ze Guan, Haizhao Li, Deliang Li, Yejian Qian
Summary: The mechanism of soot catalytical oxidation was investigated through various experiments, including temperature-programmed-oxidation (TPO), X-ray photoelectron spectroscopy, Fourier Transform Infrared Spectrometer, and Raman scattering spectrometer. It was found that ceria catalyst enhances the consumption of amorphous carbon and improves the structure and composition of soot surface, facilitating the oxidation reactions.
Article
Chemistry, Applied
S. P. Ratnayake, M. M. M. G. P. G. Mantilaka, C. Sandaruwan, D. Dahanayake, Y. Pivini Gunasekara, S. Jeyasakthy, N. M. Gurusinghe, U. K. Wanninayake, K. M. Nalin de Silva
Summary: A facile urea solution combustion method was used for synthesizing highly catalytic CeO2 nanostructures with varying properties under different thermal conditions. CeO2 synthesized at 800 degrees C exhibited superior catalytic performance compared to others, attributed to its unique nanomorphology. The synthesis of these CeO2 nanostructures represents a cost-effective and convenient abatement technique for carbon particulates in atmospheric pollution mitigation.
JOURNAL OF RARE EARTHS
(2021)
Article
Electrochemistry
Merve Akbayrak, Ahmet M. Onal
Summary: This study synthesizes Co/MO2 (M = Ti, Zr, and Ce) catalysts using a simple method and demonstrates their remarkable electrocatalytic performance in alkaline medium. The stability test shows that the catalysts maintain stable performance even after continuous testing. This work provides insights into the preparation of inexpensive, earth-abundant, and highly active OER electrocatalysts by changing impregnated metals or metal oxides supports.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Ning Rui, Xiaoshan Zhang, Feng Zhang, Zongyuan Liu, Xinxiang Cao, Zhenhua Xie, Rui Zou, Sanjaya D. Senanayake, Yanhui Yang, Jose A. Rodriguez, Chang-Jun Liu
Summary: The Ni/CeO2 catalyst prepared via gas discharge plasma and hydrogen reduction shows high activity in CO2 methanation at low temperatures, with excellent CH4 formation rate and redox property. The unique interfacial structure and metal-support interaction lead to the formation of rich interfacial Ni-CeO2 sites, improving the catalyst's performance significantly in H-2 splitting and CO2 activation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Wangyan Gou, Zhaoming Xia, Xiaohe Tan, Qingyu Xue, Fan Ye, Sheng Dai, Mingkai Zhang, Rui Si, Yong Zou, Yuanyuan Ma, Johnny C. Ho, Yongquan Qu
Summary: This study reports on the development of amorphous IrOx/CeO2 nanowires as highly active and acid-stable oxygen evolution reaction (OER) catalysts. The catalysts exhibit high mass activity and stability under acidic conditions, and the improved OER activity and stability are attributed to the regulation of oxygen intermediates, lowered activation barrier, and suppression of over-oxidation and dissolution of Ir through the intimate nanoscale structure of IrOx/CeO2.
Review
Chemistry, Multidisciplinary
Sagang Koo, Young Geon Kim, Nohyun Lee, Taeghwan Hyeon, Dokyoon Kim
Summary: With the recent interest in oxidative species/radicals in diseases, inorganic nanomaterials with redox activities have been extensively studied for use in nanomedicine. Chemodynamic therapy (CDT) is an emerging technique that increases oxidative stress to kill malignant cells with high selectivity. This review summarizes recent strategies using inorganic nanoparticles to improve CDT performance, including the design of CDT agents, modulation of the tumor microenvironment, and combination therapy.
Article
Chemistry, Multidisciplinary
Sifan Li, Xin Jin, Zhiyun Zhang, Jing Li, Jianli Hua
Summary: In this study, three novel D-A structure cyanine dyes DPpy, DMPpy, and DMPSI were designed and synthesized. Among them, DMPpy exhibited aggregation-induced emission (AIE) properties, excellent type I reactive oxygen species (ROS) generation, and mitochondrial targeting ability with near-infrared (NIR) emission and large Stokes shifts. Cell experiments demonstrated that DMPpy effectively inhibited the growth of cancer cells under normoxia or hypoxia. This study provides new AIE-active photosensitizers based on the DMP moiety for overcoming the hypoxic dilemma of malignant tumors.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Zhuobin Huo, Peng Zhao, Pengfei Miu, Lingling Ren, Bangjie Tan, Nengjie Feng, Hui Wan, Guofeng Guan
Summary: Ag-Ce modified 3DOM LaMnO3 catalysts synthesized by redox etching precipitation showed excellent catalytic performance for NOx-assisted soot oxidation, with good activity and water resistance. Ag and CeO2 played important roles in enhancing catalyst performance.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Biomedical
Mingyi Li, Jia Liu, Lin Shi, Cheng Zhou, Meizhen Zou, Daan Fu, Ye Yuan, Chundong Yao, Lifang Zhang, Sumei Qin, Miaodeng Liu, Qian Cheng, Zheng Wang, Lin Wang
Summary: This study designed gold nanoparticles-embedded ceria nanoparticles (Au/CeO2) with enhanced antioxidant activities to block the vicious cycle of reactive oxygen species (ROS) and inflammation in inflammatory bowel disease (IBD). The Au/CeO2 exhibited higher enzymatic catalytic activities and was coated with hyaluronic acid for targeted delivery to inflamed colon tissues. It effectively reduced pro-inflammatory cytokines and alleviated colon injury in colitis mice, making it a promising nano-therapeutic for treating IBD.
BIOACTIVE MATERIALS
(2023)
Article
Chemistry, Applied
J. C. Martinez-Munuera, V. M. Serrano-Martinez, J. Gimenez-Manogil, M. P. Yeste, A. Garcia-Garcia
Summary: This research aimed to study the nature of active sites and synergies in copper/ceria-zirconia formulations for low temperature CO oxidation by creating copper entities with different properties. Results showed that increasing copper loading up to 2% led to gradual improvements in activity and reducibility. The preparation method was identified as a critical variable in catalytic performance, with the IWI method showing superior results.
Article
Chemistry, Multidisciplinary
Arantxa Davo-Quinonero, Sergio Lopez-Rodriguez, Esther Bailon-Garcia, Dolores Lozano-Castello, Agustin Bueno-Lopez
Summary: This study reveals that CuO/cryptomelane exhibits high activity as a CO-PROX catalyst and shows robust performance in the presence of CO2 and H2O. Despite lower oxygen mobility compared to CuO/CeO2, the presence of intrinsic structural water in CuO/cryptomelane assists in active oxygen restitution, enhancing its catalytic performance and stability.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Applied
Marina Cortes-Reyes, Juan Carlos Martinez-Munuera, Concepcion Herrera, M. Angeles Larrubia, Luis J. Alemany, Avelina Garcia-Garcia
Summary: Through isotopic studies on model catalysts, it was found that doping with Ce and Pr elements can promote oxygen exchange and increase oxygen mobility, thereby achieving soot removal. Different synthesis methods can affect the way oxygen migrates in different centers, while the presence of NO can enhance soot removal capacity through the intervention of adsorbed products.
Article
Engineering, Chemical
Carlos G. Aguilar-Madera, Raul Ocampo-Perez, Esther Bailon-Garcia, E. C. Herrera-Hernandez, Cristian Y. Chaparro-Garnica, Arantxa Davo-Quinonero, Dolores Lozano-Castello, Agustin Bueno-Lopez, Elias Garcia-Hernandez
Summary: This study simulated the CO-PROX reaction in a CuO/CeO2 catalyst-supported monolith built by 3D-printing under different temperatures, identifying different reactive regimes. The simulation results were in good agreement with experimental results, and sensitivity analysis showed that the composition of gas mixture significantly affects the ratio of reaction rates.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Physical
Sergio Lopez Rodriguez, Arantxa Davo-Quinonero, Jeronimo Juan-Juan, Esther Bailon-Garcia, Dolores Lozano-Castello, Agustin Bueno-Lopez
Summary: The study showed a dual effect of Pr-doped Ru/CeO2 catalysts on CO2 methanation, with low Pr content enhancing oxygen mobility but high Pr content hindering CO2 dissociation. At high temperatures, Pr improves oxygen mobility which promotes CO2 dissociation, balancing out the negative effects of hindering dissociation at the interface.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Cristian Yesid Chaparro-Garnica, Esther Bailon-Garcia, Arantxa Davo-Quinonero, Patrick Da Costa, Dolores Lozano-Castello, Agustin Bueno-Lopez
Summary: Researchers have demonstrated that 3D printing allows for the creation of high-performance carbon integral monoliths with a complex network of interconnected channels, outperforming conventional catalysts in heterogeneous catalysis reactions. This novel design enhances the CO2 methanation rate by 25% at 300 degrees C due to the forced turbulent flow into the channels network, opening up new synthesis options for tailored heterogeneous catalysts.
Article
Chemistry, Multidisciplinary
Juan Carlos Martinez-Munuera, Javier A. Gimenez-Manogil, Roberto Matarrese, Lidia Castoldi, Avelina Garcia-Garcia
Summary: Research focused on ceria-based catalysts with copper substitutions for noble metals in the reduction of NOx under isothermal conditions in a microreactor system. Catalysts containing both copper and barium showed selectivity in the reduction process, producing N-2, NH3, and NO. Analysis of different formulations at various temperatures revealed the role of oxygen vacancies in ceria-based materials in NOx reduction product formation.
APPLIED SCIENCES-BASEL
(2021)
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, Physical
Sergio Lopez-Rodriguez, Arantxa Davo-Quinonero, Esther Bailon-Garcia, Dolores Lozano-Castello, Facundo C. Herrera, Eric Pellegrin, Carlos Escudero, Max Garcia-Melchor, Agustin Bueno-Lopez
Summary: This study investigates the CO2 methanation mechanism on a Ru/CeO2 catalyst using NAP-XPS, DRIFTS, and DFT calculations, highlighting the important role of the ceria support in the overall process.
JOURNAL OF PHYSICAL CHEMISTRY C
(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
Engineering, Chemical
Jon A. Onrubia-Calvo, Adrian Quindimil, Arantxa Davo-Quinonero, Alejandro Bermejo-Lopez, Esther Bailon-Garcia, Benat Pereda-Ayo, Dolores Lozano-Castello, Jose A. Gonzalez-Marcos, Agustin Bueno-Lopez, Juan R. Gonzalez-Velasco
Summary: The reaction kinetics of CO2 methanation over a highly active 8.5% Ni/CeO2 catalyst was studied, and the formate route was found to accurately predict the experimental data.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
Susana Fernandez-Garcia, Miguel Tinoco, Ana Belen Hungria, Xiaowei Chen, Jose Juan Calvino, Juan Carlos Martinez-Munuera, Javier Gimenez-Manogil, Avelina Garcia-Garcia
Summary: The impact of morphology and reducibility on lanthanum-doped ceria nanocatalysts for NO oxidation reaction was assessed in this study. Lanthanum-doped ceria with controlled morphology (nanocubes and nanorods) was prepared using a hydrothermal method. The structural, compositional, and redox characterization of these catalysts was performed using various techniques. The results revealed a synergistic effect between lanthanum and ceria, and the degree of enhancement depended on the morphology and the amount of lanthanum incorporated into CeO2. These findings can aid in optimizing ceria-based nanocatalysts for the removal of NOx emissions from exhaust gases.
Article
Chemistry, Physical
Juan Carlos Martinez-Munuera, Marina Cortes-Reyes, Avelina Garcia-Garcia
Summary: This research investigates the behavior of different ceria-praseodymia mixed oxides and model catalysts in interaction with 18O2 under different temperatures, simulating conditions in gasoline direct injection (GDI) exhaust gases. The capacity of oxygen activation and uptake varies depending on the catalyst, temperature, praseodymium content, and preparation method. Some ceria-praseodymia formulations show high soot combustion activity, with the involvement of active oxygen species after the 18O2 pulse.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Cristian Yesid Chaparro-Garnica, Esther Bailon-Garcia, Dolores Lozano-Castello, Agustin Bueno-Lopez
Summary: A new method to synthesize integral carbon monoliths with a controlled channel morphology has been developed by combining 3D-printing technology and sol-gel polymerization. The carbon monolith with tortuous channels showed improved catalytic performance compared to a conventional honeycomb design, due to enhanced gas-phase contact and diffusion within the carbon skeleton. This work demonstrates the potential of 3D printing to enhance catalytic supports currently available.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Jon A. Onrubia-Calvo, Benat Pereda-Ayo, Jose A. Gonzalez-Marcos, Agustin Bueno-Lopez, Juan R. Gonzalez-Velasco
Summary: The study investigates the viability of LaNiO3/CeO2 formulations as precursors for CO2 methanation, with the 10% LaNiO3/CeO2 precursor demonstrating high activity, selectivity, and stability. The interaction between Ni, La2O3 and CeO2 enhances the efficiency of CO2 methanation and the stability of the catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(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)
