Article
Chemistry, Physical
Shuangye Li, Liyun Song, Jian Li, Hong He
Summary: A series of NdV/Ti-x% catalysts were prepared by a microwave-assisted deposition-precipitation method and their catalytic performance for the selective catalytic reduction (SCR) of NO by NH3 was investigated. The amount of vanadate added significantly influenced the SCR activity of the catalyst. The NdV/Ti-x% catalysts demonstrated good low-temperature catalyst activities and excellent SO2 resistance performances.
Article
Chemistry, Physical
Martin Elsener, Rob Jeremiah G. Nuguid, Oliver Krocher, Davide Ferri
Summary: Research has shown that formaldehyde in exhaust gases can react with NH3 to produce HCN, leading to a parasitic consumption of NH3 and a decrease in NOx conversion rate by up to 15%. Additionally, the non-reducible TiO2 support also produces moderate levels of HCN, indicating that redox sites enhance the reaction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Dongrun Xu, Weiye Qu, Junhong Liu, Junxiao Chen, Xue Fang, Liwei Chen, Zhen Ma, Xi Liu, Xingfu Tang, Yaxin Chen
Summary: This study provides evidence that dinuclear vanadium-tungsten sites are the most active catalytic sites in conventional V2O5-WO3/TiO2 SCR catalysts, contrary to the prevailing view. These sites have stronger acidity and higher concentration of vanadium 3d electrons, leading to improved NH3 adsorption and O-2 activation in SCR. This finding settles a long-standing dispute and has important implications for understanding SCR mechanisms and designing better catalysts.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Environmental
Congliang Zhang, Haoran Sang, Huiping Yang, Limin Hu, Bo Wu, Yue Yin
Summary: This study proposes an efficient Fenton-like enhanced SCR reaction for the removal of NO in low-temperature flue gas. FeVO4 catalyst exhibited excellent NO removal performance at low temperatures. The role of hydroxyl radicals (& BULL;OH) in NO removal was demonstrated and the addition of H2O2 vapor improved the selectivity of N2. The study also provided insights into the mechanism of Fenton-like enhanced SCR reactions and the structure-activity relationships of FeVO4 catalyst.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Sheng Chang, Mingqi Wang, Chong-Chen Wang, Xijun Fu, Hao Bi, Qingyi Zeng
Summary: FeVO4 nanopolyhedron photoelectrodes prepared through hydrothermal synthesis and thermal treatment exhibit excellent photo-electrocatalytic performance with uniformly dispersed nanocrystals, offering tunable film thicknesses and promising potential for further optimization studies.
Article
Engineering, Environmental
Shilin Zhao, Junlin Peng, Runqi Ge, Kaibo Yang, Siyu Wu, Yuxin Qian, Tianle Xu, Junjie Gao, Yijun Chen, Zhiqiang Sun
Summary: This paper comprehensively and systematically reviews the composition, deNOx characteristics, poisoning, and regeneration of commercial V2O5-WO3/TiO2 SCR catalyst, based on recent studies. It has important guiding significance for poisoning study and regeneration technology development of commercial SCR catalysts.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Chemistry, Multidisciplinary
Geumyeon Lee, Bora Ye, Myeung-jin Lee, Seung-Yeop Chun, Bora Jeong, Hong-Dae Kim, Jungho Jae, Taewook Kim
Summary: This study aims to produce more efficient catalysts for NOx removal by treating the TiO2 support with titanium isopropoxide (TTIP) to increase the number of catalytically active sites and facilitate the dispersal of active materials. The catalyst prepared at a TTIP loading of 5 wt% showed optimal performance due to increased thermal stability caused by high extent of W dispersion and the formation of V(4+) by the reaction of V5+ with surface Ti3+.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Applied
Teng-ge Mi, Yang-wen Wu, Xin-yue Zhou, Wen-tao Li, Li Zhao, Ji Liu, Qiang Lu
Summary: The study investigates the mechanisms of carbon monoxide (CO) oxidation on two SCR catalyst models and finds that the CO oxidation cycle consists of two key stages. The activation energy for CO oxidation on V2O5/TiO2 surface is lower than that on V2O5-WO3/TiO2, indicating that WO3 doping inhibits the CO oxidation.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Quanming Liang, Jian Li, Tao Yue
Summary: The addition of 3% CeO2 improved the performance and resistance of the V2O5-WO3/TiO2 catalyst by establishing a protective layer. The experiment showed that layered filling can slow down the catalyst's deactivation rate, and the deposition amounts of NH4+ and SO42- can be used as indicators for judging the degree of poisoning.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Physical
Shuqi Zhao, Jian-Wen Shi, Cihang Niu, Baorui Wang, Chi He, Wei Liu, Lei Xiao, Dandan Ma, Hongkang Wang, Yonghong Cheng
Summary: The Ce-Mn/FeVO4 catalyst achieves high-efficiency de-NOx through the synergistic effect between Ce and Mn, even reaching high de-NOx efficiency at low temperatures.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Chemical
Jinlong Liu, Chenye Wang, Xingrui Wang, Huiquan Li, Chen Zhao
Summary: This study investigated the removal of iron and recovery of TiO2 support from spent SCR catalyst. It was found that iron existed on the surface and bulk structure of the spent SCR catalyst, and various methods were employed to efficiently remove iron and recover anatase TiO2 for potential reuse as support material.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Applied
Jihene Arfaoui, Abdelhamid Ghorbel, Carolina Petitto, Gerard Delahay
Summary: The addition of Ce and/or W influences differently the structure, texture, crystallites size, surface oxygen concentration, total acidity and redox ability of aerogel samples and clearly affects their NO-SCR activity. It was found that cerium species are more active in the low temperature NO-SCR reaction than tungsten ones, and the NO conversion into N-2 reaches 85% at 300 degrees C and exceeds 90% between 320 and 400 degrees C over the WO3-CeO2-TiO2 catalyst.
JOURNAL OF POROUS MATERIALS
(2021)
Article
Environmental Sciences
Ajit Dattatray Phule, Joo Hong Choi, Jin Hyoung Kim
Summary: NOx emissions from stationary and mobile sources are a major global environmental issue, with selective catalytic reduction (SCR) using V2O5-WO3/TiO2 (VWT) catalyst being the most effective technique for reducing these emissions. Manganese has been found to be the best substitute for vanadium in the VWT catalyst, improving catalytic efficiency and maintaining stable NO conversion performance. The addition of manganese in the 3Mn3V9WT powder catalyst enhances NO conversion performance, with NH3 leakage below 20ppm and NOx conversion reaching 95-98% at temperatures between 260-320 degrees Celsius.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Energy & Fuels
Mengxia Qing, Sheng Su, Kun Qian, Liang Liu, Zijun Yin, Song Hu, Yi Wang, Jun Xiang
Summary: This study investigated NH3 adsorption and catalytic performance of V2O5-WO3/TiO2 catalyst under high concentration of CO2 and H2O conditions, showing that CO2 and H2O mainly influence NO conversion by affecting O alpha proportion, V4+ proportion, and NH3 adsorption.
Article
Chemistry, Physical
Tae Hun Kang, Hyun Sub Kim, Hwangho Lee, Do Heui Kim
Summary: V2O5-WO3/TiO2 + H-ZSM-5 (PM), a physical mixture of V2O5-WO3/TiO2 catalyst and H-ZSM-5 zeolite, was prepared for NH3 reduction of NOx. The PM catalyst showed similar deNOx efficiency to V2O5-WO3/TiO2 catalyst in NH3 reduction of NO, but exhibited higher catalytic activities in NH3 reduction of NO2 due to increased NO2 and N2O4 adsorption. Moreover, the PM catalyst produced less N2O than H-ZSM-5 catalyst and exhibited higher SO2 tolerance. This study demonstrates the practical importance of PM catalyst with its high deNOx efficiency, low N2O production, and high SO2 resistance for the SCR of either NO or NO2.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Chemical
Alessandra Toso, Maila Danielis, Carla de Leitenburg, Marta Boaro, Alessandro Trovarelli, Sara Colussi
Summary: This study investigates the impact of different synthesis routes and morphological properties on the passive NOx adsorption (PNA) performance of Pd/CeO2 catalysts. The results indicate that the surface area of Pd/CeO2 materials plays a crucial role in their NOx storage capacity and efficiency, while the morphology and Pd deposition method have minimal effects. However, the Pd deposition method does affect the dynamics of NOx desorption, likely due to Pd-Ce interactions at the nanoscale.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
Sepideh G. Khasevani, Dariush Nikjoo, Dickson O. Ojwang, Luca Nodari, Shokat Sarmad, Jyri-Pekka Mikkola, Federica Rigoni, Isabella Concina
Summary: In this study, the performance of four Prussian blue analogues (PBAs) as catalysts for the degradation of ciprofloxacin in water was investigated. It was found that selective degradation of the molecular target can occur without the need for light, but light irradiation can enhance the process without resulting in photolysis. The study highlights the importance of the transition metal binding the cyanide bridge in promoting photoinduced charge generation and transfer, effectively disrupting the molecular target. Additionally, the irradiation with solar simulated light may induce a spin cross-over in the materials.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Sajid Hussain, Eleonora Aneggi, Alessandro Trovarelli, Daniele Goi
Summary: This study investigated the treatment of landfill leachate using a heterogeneous Fenton-like oxidation process with a Cu/ZrO2 catalyst. By adjusting reaction conditions such as pH, catalyst dosage, oxidant dosage, temperature, and reaction time, the researchers were able to achieve high removal efficiency of organic compounds. The study also evaluated the degree of oxidation using AOS and COS parameters. The results demonstrated the promising activity of the copper-based catalyst for the treatment of liquid waste.
Article
Chemistry, Multidisciplinary
Anastasios Tsiotsias, Benedikt Ehrhardt, Benjamin Rudolph, Luca Nodari, Seunghyun Kim, WooChul Jung, Nikolaos D. Charisiou, Maria A. Goula, Simone Mascotto
Summary: This paper demonstrates how the composition of bimetallic Fe-Ni exsolution can be controlled by the nature and concentration of oxygen vacancies in the parental matrix, and how this affects the performance of CO2-assisted ethane conversion. The use of mesoporous A-site deficient La0.4Sr0.6-alpha Ti0.6Fe0.35Ni0.05O3+/-delta perovskites enables fast exsolution kinetics of bimetallic Fe-Ni nanoparticles. The control of reduction and growth processes of bimetallic exsolution offers interesting prospects for the design of advanced catalysts based on bimodal nanoparticle heterostructures.
Article
Environmental Sciences
Sajid Hussain, Eleonora Aneggi, Clara Comuzzi, Diego Baderna, Daniele Zuccaccia, Alessandro Trovarelli, Daniele Goi
Summary: Landfill leachates are highly contaminated liquid waste and their treatment is challenging. This study focuses on developing simpler and faster tools for evaluating the treated waste and for preliminary screening of Fenton process conditions. Several analytical techniques, including UV-vis spectroscopy, AOX analysis, and H-1 NMR analysis, were used to assess the reduction of toxicity and degradation of contaminants. The results demonstrate the effectiveness of the investigated tool for preliminary evaluation of detoxification efficacy.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Inorganic & Nuclear
Maxime Delporte, Julie Cavailles, Michael Martin Romo Morales, Nicolas Bion, Luca Nodari, Xavier Courtois, Fabien Can, Helena Kaper
Summary: In this study, a series of CaTi1-xFexO3-delta (0 < x < 0.5) materials were prepared using a modified Pechini method. The synthesis conditions were optimized to improve specific surface area and phase purity. The impact of polyols and iron content on the oxygen exchange rate, reducibility, and catalytic performance for methane total oxidation was investigated. The results showed that oxygen activation and diffusion in the materials increased with increasing Ti substitution. Additionally, the methane oxidation performance remained stable within a certain range and was activated by specific iron sites.
INORGANIC CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Nuria J. Divins, Andrea Braga, Xavier Vendrell, Isabel Serrano, Xenia Garcia, Lluis Soler, Ilaria Lucentini, Maila Danielis, Andrea Mussio, Sara Colussi, Ignacio J. Villar-Garcia, Carlos Escudero, Alessandro Trovarelli, Jordi Llorca
Summary: The authors demonstrate that mechanically prepared Pd-Pt supported on ceria catalysts can effectively abate methane, even under wet conditions. By applying a toolkit of in situ synchrotron techniques, they show that the synthesis method greatly influences the interaction and structure at the nanoscale. They also find that the unique structures attained by milling are key for the catalytic activity and correlate with higher methane conversion and longer stability in the wet feed.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Juan D. Jimenez, Luis E. Betancourt, Maila Danielis, Hong Zhang, Feng Zhang, Ivan Orozco, Wenqian Xu, Jordi Llorca, Ping Liu, Alessandro Trovarelli, Jose A. Rodriguez, Sara Colussi, Sanjaya D. Senanayake
Summary: The study explored the mechanism of the methane dry reforming reaction using Pd/CeO2 catalysts prepared via mechanochemical synthesis. The results showed that the PdAcCeO2M catalysts had unique Pd-Ce interfaces, leading to enhanced reactivity and a distinct reaction mechanism compared to traditionally synthesized Pd/CeO2 catalysts. The presence of a carbon-modified Pd-0 and Ce-4+/(3+) surface arrangement in PdAcCeO2M was found to activate and sustain distinct Pd-CO intermediate species and strong Pd-CeO2 interactions during the reaction.
Article
Humanities, Multidisciplinary
Martina Zuena, Luciano Pensabene Buemi, Luca Nodari, Grazina Subelyte, Lena Stringari, Beatrice Campanella, Giulia Lorenzetti, Vincenzo Palleschi, Patrizia Tomasin, Stefano Legnaioli
Summary: This paper presents a multi-analytical investigation on Max Ernst's oil paintings, aiming to understand his painting techniques, materials used, and the conservation status of the artworks. Through non-invasive techniques, important information about Ernst's methods and materials were revealed, providing a comprehensive analysis of his artworks.
Article
Chemistry, Physical
Andrea Basagni, Veronica Torresan, Pasquina Marzola, Marcela B. Fernandez van Raap, Luca Nodari, Vincenzo Amendola
Summary: Metastable alloy nanoparticles with complex ultrastructure and dynamic evolution have potential applications in various fields such as photocatalysis and nanomedicine. In this study, metastable Au-Fe alloy nanoparticles were successfully synthesized by laser ablation in liquid, and their properties were characterized using different techniques.
FARADAY DISCUSSIONS
(2023)
Article
Spectroscopy
Michele Cassetta, Beatrice Giannetta, Francesco Enrichi, Claudio Zaccone, Gino Mariotto, Marco Giarola, Luca Nodari, Marco Zanatta, Nicola Daldosso
Summary: This study examines the effects of alkali vs iron ratio on the properties of synthetic basaltic glasses using Raman spectroscopy and calorimetry. The results show that changes in this ratio alter the glass transition interval and the structure of the glass. The study also reveals that increasing the alkali vs iron content results in a harder elastic medium without changing its nature.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Physical
Patrizia Frontera, Angela Malara, Anastasia Macario, Mariachiara Miceli, Lucio Bonaccorsi, Marta Boaro, Alfonsina Pappacena, Alessandro Trovarelli, Pier Luigi Antonucci
Summary: In this study, the catalytic behavior of nickel-based catalysts supported on ceria/zirconia, undoped and doped with lanthanum and neodymium, was investigated under steam reforming, partial oxidation and autothermal reforming reactions of different fuels. The catalytic properties were evaluated at a temperature of 800 degrees C, under atmospheric pressure, using steam/carbon and oxygen/carbon ratio, respectively, of S/C = 2.5 and O/C = 0.5. The doped catalyst showed better catalytic performance and resistance to deactivation due to improved distribution of nickel species and higher concentration of defect groups and oxygen vacancies on the catalyst surface.
Article
Engineering, Chemical
Patrizia Frontera, Angela Malara, Marta Boaro, Andrea Felli, Alessandro Trovarelli, Anastasia Macario
Summary: Ruthenium/nickel ex-solved perovskite catalysts were synthesized and characterized for ethanol autothermal reforming. The catalysts exhibited high ethanol conversion and hydrogen yield, with the SFMN/0.5Ru catalyst containing 0.5 wt% Ru showing the best performance. Increasing the amount of Ru in the catalyst resulted in reduced hydrogen yield and increased coke deposition.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Polymer Science
Rosa Costantini, Luca Nodari, Jacopo La Nasa, Francesca Modugno, Lucia Bonasera, Sara Rago, Alfonso Zoleo, Stefano Legnaioli, Patrizia Tomasin
Summary: This study investigates the instability of polyurethane foam used in artworks, which requires careful conservation strategies. Various analytical techniques were used to characterize the main components and additives of the foam. Morphological changes and harmful environmental factors were also studied. The findings provide important insights for preventive conservation of these artworks.
Article
Chemistry, Inorganic & Nuclear
Eleonora Aneggi, Filippo Campagnolo, Daniele Zuccaccia, Walter Baratta, Jordi Llorca, Alessandro Trovarelli
Summary: This study investigates the solvent-free oxidation of benzyl alcohol using air as an oxidant in the presence of ruthenium supported on alumina and zirconia. The catalyst shows good activity and complete selectivity, meeting the requirements for atom economy and environmental sustainability. The materials are stable and maintain high activity after recycling.
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)
