Article
Chemistry, Physical
Feng Hong, Guanjian Cheng, Weihao Hu, Shengyang Wang, Qike Jiang, Junhong Fu, Botao Qiao, Jiahui Huang
Summary: Gold-based catalysts have shown promise for CO preferential oxidation (CO-PROX) reaction in H-2-rich streams due to their high intrinsic activity for CO elimination even at room temperature. However, the competition of H-2 oxidation and the low stability of gold nanoparticles have limited the CO conversion at elevated temperatures. In this study, a Au-Cu bimetallic catalyst prepared by galvanic replacement method was found to exhibit a wide temperature window for CO total conversion (30-100 degrees C) and excellent catalyst stability without deactivation during a 200-hour test. Detailed characterizations and density functional theory (DFT) calculations revealed that the synergistic effect of Au-Cu and the electron transfer from Au to Cu enhanced the chemisorption of CO and weakened the dissociation of H-2, inhibiting the competition of H-2 oxidation and widening the temperature window for CO total conversion.
Article
Chemistry, Physical
Christos Papadopoulos, Konstantinos Kappis, Joan Papavasiliou, John Vakros, Aspasia Antonelou, Wojciech Gac, Haibin Li, George Avgouropoulos
Summary: CuCe mixed oxides are commonly used for preferential CO oxidation in the purification of hydrogen-rich gas stream. This study investigated the synthesis of various ceria supports and the preparation of CuCe mixed-oxide catalysts. It found that modifying the hydrothermal parameters can tune the properties of the supports, leading to highly active and selective catalysts. The nature of the reduced copper species and the optimum content in oxygen vacancies play crucial roles in the catalytic performance.
Article
Energy & Fuels
Jieun Kim, Tae Wook Kim, Han Bom Kim, Jong Kyu Kang, Eun Duck Park
Summary: In this study, core-shell Al@Al2O3 supports with different Al contents were prepared and used for supporting Ru catalysts, revealing the significant impact of Al content on catalytic activity. The surface property of the outermost alumina layer in the support was found to be beneficial for the formation of Ru nanoparticles, leading to enhanced catalytic performance for PROX.
Article
Chemistry, Physical
Mostafa Aly, Thobani G. Gambu, Yaoyuan Zhang, Vladimir V. Galvita, Mark Saeys
Summary: The study investigates the selective oxidation of hydrogen in CO-rich streams resembling steel mill gases and finds that high water selectivity can be achieved under certain conditions, reducing the industry's carbon footprint.
Article
Chemistry, Physical
Xudong Du, Yun Lang, Kun Cao, Jiaqiang Yang, Jiaming Cai, Bin Shan, Rong Chen
Summary: This paper designs bifunctional Pt/Ru nanoparticle catalysts via selective atomic layer deposition for PROX in H-2, showcasing optimal activity and selectivity. The enhancement in PROX performance is attributed to the elimination of competitive CO adsorption on Pt, allowing neighboring exposed Ru surfaces to provide highly active sites for O-2 dissociation.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Raziyeh Jokar, Seyed Mehdi Alavi, Mehran Rezaei, Ehsan Akbari
Summary: The study found that the 10wt% CuO/MnO2 catalyst exhibited the best catalytic performance in CO preferential oxidation reaction, attributed to the synergistic interaction between copper and manganese. However, adding CO2 and/or H2O to the feedstock decreased the catalyst performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
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
Energy & Fuels
Wanjun Zhao, Hui Dang, Lijun Yue, Yongzhao Wang, Ruifang Wu, Haitao Li, Yongxiang Zhao
Summary: A series of Pd-Cu-xSn/Al2O3 catalysts with low tin content were prepared and used for low-temperature CO preferential oxidation (CO-PROX) in H2-rich stream. The addition of Sn promoted the interaction between Sn species and PdCu/Al2O3, improving the stability of active Cu2Cl(OH)3 species. The doping of Sn also hindered the reduction of active Pd species and facilitated the reoxidation of Cu+ species.
Article
Chemistry, Physical
Alexander A. Khechfe, Mark M. Sullivan, Dimitrios Zagoraios, Alexandros Katsaounis, Constantinos G. Vayenas, Yuriy Roman-Leshkov
Summary: This study demonstrates the non-Faradaic electrochemical promotion of a Bronsted acid-catalyzed reaction over a metal oxide surface. The promotion is believed to originate from the generation of Bronsted acid sites localized to the three-phase boundary at the catalyst/gas/electrolyte interface and/or acid site strengthening due to electrical polarization. The effect is reversible and does not appear to permanently alter the chemistry of the Mo film.
Article
Engineering, Environmental
Ang Zhou, Xiaolin Guo, Siyi Zhong, Zi 'ang Chen, Qiaoling Kang, Miaogen Chen, Dingfeng Jin, Meiqiang Fan, Renxian Zhou, Tingli Ma
Summary: A novel strategy of fabricating hierarchically arrayed defective MnCo2O4@Ni foam catalysts has been proposed to enhance the catalytic performance for photothermal CO-PROX. The strategy generates three synergistic effects, including strengthened light absorption and photo-to-thermal conversion, alleviated electron-hole recombination, and facilitated oxygen adsorption and activation. These effects greatly improve the catalytic activity of MnCo2O4@NF in photothermal CO-PROX driven by simulated solar light. This work provides a simple and facile strategy for developing hierarchical and defective MnCo2O4 spinel photothermal materials.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Rodolfo M. Antoniassi, Arthur P. Machado, Ana Rita N. Paiva, Carla M. S. Queiroz, Jorge M. Vaz, Estevam Spinace, Julio Cesar M. Silva, Eduardo Carmine, Pedro H. C. Camargo, Roberto M. Torresi
Summary: An efficient Pt20Fe/CeO2 catalyst was synthesized using a simple borohydride reduction process, showing excellent CO conversion and CO2 selectivity at ambient temperature, meeting the requirements for hydrogen supply in fuel cell devices.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Applied
D. Grigoriou, D. Zagoraios, A. Katsaounis, C. G. Vayenas
Summary: This study demonstrates the role of solid electrolytes in supporting ruthenium during CO2 hydrogenation through Electrochemical Promotion of Catalysis (EPOC), leading to the development of a new supported Ru-Co catalyst for the production of higher hydrocarbons.
Article
Engineering, Environmental
M. Esperanza Adrover, Tanya Wolff, Gabriela Tonetto, Eduardo Lopez
Summary: The performance and stability of mesostructured Pt catalysts for the preferential oxidation of CO in H-2-rich environments were studied. Pt (1%)/Al-MCM-41 exhibited high activity and stability for CO preferential oxidation at 120 degrees C, even when exposed to steam and CO2.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Organic
Nicholas R. Deprez, Dane J. Clausen, Jia-Xuan Yan, Feng Peng, Shaoguang Zhang, Jongrock Kong, Yanguang Bai
Summary: This study presents an effective method for the selective oxidation of pyrrolidines to pyrrolidinones, showing high selectivity and functional group compatibility. It demonstrates the use of an operationally simple ElectraSyn 2.0 and cost-effective stainless-steel electrode for this electrochemical oxidation process.
Article
Chemistry, Physical
Xinglin Hou, Qinyang Zhao, Zichen Liu, Dang-Guo Cheng, Fengqiu Chen, Xiaoli Zhan
Summary: By regulating the stability of ceria crystal planes, the catalytic performance of copper species can be enhanced in CO preferential oxidation (COPROX). The study found that the mass transfer between CuOx clusters and CeO2 weakened, and the sintering of CuOx enhanced as the stability of CeO2 exposed planes increased. The CuO/CeO2-400 catalyst prepared from CeO2-400 with suitable crystal plane stability exhibited the highest amount of Cu+-CO and optimal reactivity in the CO-PROX reaction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Weiwei Zhang, Chunyan Dai, Xuemei Luo, Xunmin Ou
Summary: CCUS technology is crucial for coal power plants in China to maintain existing production structure and achieve near-zero carbon emissions under the dominance of coal in the current energy structure. Government incentives play a significant role in promoting investment in CCUS technology, with a subsidy ratio exceeding 0.33 encouraging immediate investment in coal-fired plants.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2021)
Article
Environmental Sciences
Salah Eddine Sbai, Chunlin Li, Antoinette Boreave, Nicolas Charbonnel, Sebastien Perrier, Philippe Vernoux, Farida Bentayeb, Christian George, Sonia Gil
Summary: Through an atmospheric experiment conducted in Lyon, it was found that urban air has a high potential to form secondary organic aerosol (SOA), primarily influenced by OH radical photochemical oxidation rather than ozonolysis. The correlation between SOA formation and ambient environment conditions was also observed during the study.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2021)
Article
Chemistry, Physical
Weidong Zhang, Kelsey Lassen, Claude Descorme, Jose Luis Valverde, Anne Giroir-Fendler
Summary: The study focused on Co3O4 catalysts prepared via carbonate precipitation at different pH levels, investigating their properties and application in toluene or propane oxidation. Results showed that controlling the precipitation pH could lead to Co3O4 catalysts with excellent performance and stability.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Thermodynamics
J. L. Valverde, V. R. Ferro, A. Giroir-Fendler
Summary: The study aims to calculate and validate binary interaction parameters for different salts in water using regression analysis, showing that the calculated parameters obtained through two different procedures can effectively fit experimental results and improve the prediction quality of multicomponent systems.
FLUID PHASE EQUILIBRIA
(2022)
Article
Chemistry, Multidisciplinary
Celia Gomez-Sacedon, Ester Lopez-Fernandez, Ana Raquel De La Osa-Puebla, Fernando Dorado-Fernandez, Ernesto Amores-Vera, Antonio De Lucas-Consuegra
Summary: This study designed a self-sufficient system for a one-family house by coupling a solar photovoltaic array and an anion exchange membrane water electrolyzer, demonstrating that low-scale hydrogen production is a suitable technology for using renewable energy in residential applications without grid connection. The system also utilized hydrogen storage and fuel cells to address energy needs when solar energy is unavailable.
APPLIED SCIENCES-BASEL
(2021)
Article
Environmental Sciences
A. Molino, M. Hamandi, R. Grosjean, F. Dappozze, L. Lamaa, L. Peruchon, C. Brochier, K. Dembele, M. El Hajem, P. Vernoux, C. Guilard, H. Kaper
Summary: This study investigates the interaction between a photocatalyst (TiO2) and a catalyst (Pt/TiO2 and Pt/CeO2) in the oxidation of formaldehyde and toluene at room temperature. The presence of the catalyst and photocatalyst enhances the catalytic performance for formaldehyde oxidation but decreases the photocatalytic performance for toluene oxidation. The overall performance of the system can be optimized by selecting the support material for the catalyst, controlling the amount of Pt used, and adjusting the ratio of catalyst to photocatalyst. Different configurations of the photocatalyst and catalyst on the textile are also studied, with the gas stream passing through the textile being the most effective.
Article
Chemistry, Physical
N. Grimaldos-Osorio, F. Sordello, M. Passananti, J. Gonzalez-Cobos, A. Bonhomme, P. Vernoux, A. Caravaca
Summary: Developing sustainable processes for plastic recycling is an important environmental issue. Electro-oxidation of plastic waste in electrolyzers powered by renewable energies is a promising option to produce hydrogen at lower temperatures with reduced energy demand. However, the dissolution strategy of PMMA still has some drawbacks that degrade the electrochemical performance of the electrode.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Simon Fahed, Remy Pointecouteau, Mimoun Aouine, Antoinette Boreave, Sonia Gil, Valerie Meille, Philippe Bazin, Olivier Toulemonde, Alain Demourgues, Marco Daturi, Philippe Vernoux
Summary: This study describes the properties and catalytic activity of Pr-rich cerium-zirconium-praseodymium (CZP) oxides for propane and CO oxidation. The concentration of oxygen vacancies can be controlled by adjusting the quantity of Pr3+ cations. A high-energy grinding step can increase the Pr3+ concentration and enhance the reducibility and catalytic activity. Pr-rich CZP oxides show better performance in diesel oxidation catalyst applications.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Physical
Jie Yu, Jesus Gonzalez-Cobos, Frederic Dappozze, Francisco J. Lopez-Tenllado, Jesus Hidalgo-Carrillo, Alberto Marinas, Philippe Vernoux, Angel Caravaca, Chantal Guillard
Summary: Photoelectrocatalytic glycerol oxidation is a promising technology for simultaneous biomass waste utilization and hydrogen production. By applying an external bias, the photo-catalytic activity and stability of monoclinic WO3 catalyst have been enhanced for the selective generation of value-added products under near-neutral conditions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Applied
Alberto Rodriguez-Gomez, Fernando Dorado, Paula Sanchez, Ana Raquel De La Osa
Summary: The aim of this study is to enhance the generation of hydrogen and added-value compounds through ethanol electrochemical reforming. The results show that PtCo/C and PtNi/C exhibit the highest electrocatalytic activity, leading to increased hydrogen and chemical yields. PtRu/C is more advantageous for acetic acid production at lower potentials, while sacrificing ethanol conversion. PtCu/C performs the worst in terms of electrochemical performance and product distribution.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Physical
Simon Fahed, Remy Pointecouteau, Mimoun Aouine, Antoinette Boreave, Sonia Gil, Philippe Bazin, Alain Demourgues, Marco Daturi, Philippe Vernoux
Summary: Improving the activity of emission control catalysts in urban mode at low temperatures can be achieved by tailoring the metal-support interaction between platinum group metals (PGMs) and ceria. In this study, dispersing a small amount of Pd on Pr-rich cerium-zirconium-praseodymium mixed oxides led to efficient CO oxidation at low temperatures, but required a pre-reduction step to promote propane oxidation. However, the fast re-oxidation and re-dispersion of Pd nanoparticles by the high oxygen mobility of the mixed oxide rapidly deactivated the catalysts in lean conditions.
Article
Computer Science, Interdisciplinary Applications
Jose L. L. Valverde, Victor R. R. Ferro, Anne Giroir-Fendler
Summary: Aspen HYSYS is commonly used in Chemical Engineering courses at the University of Castilla-La Mancha, and automation is seen as a powerful tool for simulating complex processes. A seminar on automation has had a positive impact on students, although more examples are needed for better understanding and application of automation.
COMPUTER APPLICATIONS IN ENGINEERING EDUCATION
(2023)
Article
Chemistry, Physical
Alberto Rodriguez-Gomez, Enrico Lepre, Fernando Dorado, Luz Sanchez-Silva, Nieves Lopez-Salas, Ana Raquel de la Osa
Summary: In this study, adenine-derived noble carbons were used as anodic supports for PtRu nanoparticles to enhance the catalytic activity of ethanol oxidation reaction (EOR). Three noble carbons (ANZ, ALZ, and ALK) were synthesized, and ANZ showed the highest catalytic activity due to its higher dispersion degree and lower alloying percentage. PtRu/ANZ exhibited 2.4 and 1.6 times larger mass activity than commercial PtRu/C in EOR and scaled-up proton exchange membrane cell experiments, respectively. These findings indicate the potential of nitrogen-containing supports for EOR electrocatalysts.
MATERIALS TODAY ENERGY
(2023)
Review
Chemistry, Physical
Jesus Gonzalez-Cobos, Mathieu S. Prevot, Philippe Vernoux
Summary: Lignin electrolysis offers the possibility of co-generating valuable aromatic compounds and green H2 with lower energy cost than traditional water electrolysis. This review provides an overview of anode materials and cells investigated in different conditions and summarizes the remaining challenges. Low-temperature electrolyzers can be integrated in biorefineries for lignin conversion and hydrogen co-generation.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Thermodynamics
E. Castellanos, J. L. Valverde, M. C. Navarro
Summary: This study focuses on modeling and numerical simulation of gas flow and temperature in a 0.09 m diameter and 1 m long reactor to optimize the temperature inside. The research shows that locating the support device at the center or closer to the outlet of the reactor results in optimal temperatures at the reactor shell, with better energy efficiency achieved when it is closer to the outlet. The findings are significant for laboratory experiments to control the temperature required for optimal formation of these important industrial nanomaterials.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
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)
