Article
Engineering, Environmental
Wenjie Liu, Yifei Long, Jingbo Zhang, Shinian Liu, Yongyan Zhou, Xin Tong, Yajie Yin, Xiaoyi Li, Kang Hu, Jiangjun Hu
Summary: Silver and copper modified ZSM-5 zeolite catalysts showed high conversion efficiency for ammonia and nitrogen oxides in coal-fired plants, with good tolerance to water and sulfur dioxide. The addition of silver and copper oxides did not destroy the structure of the zeolite, but instead enhanced its acidity and ammonia adsorption ability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Xiaoqi Fei, Weilong Ouyang, Zhenyu Gu, Shuang Cao, Haiqiang Wang, Xiaole Weng, Zhongbiao Wu
Summary: The core-shell catalyst composed of a Co3O4 core and ZSM-5 shell was prepared and studied for dichloromethane oxidation. Introducing chromium into the catalyst significantly increased its activity due to the interaction between Cr2O3 and Co3O4. Raman spectra and in situ DRIFT studies confirmed this interaction and the synergistic effect between Cr2O3 and Co3O4, as well as the enhanced mobility of lattice oxygen, leading to improved dechlorination performance.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Yuan Jing, Chenxi He, Ningqiang Zhang, Yu Murano, Ryo Toyoshima, Hiroshi Kondoh, Yuuta Kageyama, Hironori Inomata, Takashi Toyao, Ken-ichi Shimizu
Summary: In this study, the addition of Ag was found to enhance the catalytic efficiency of RhOx/Al2O3 catalyst, especially at low temperatures. The promotional effect was mainly achieved by enhancing the thermal reduction of Rh oxide.
Article
Chemistry, Physical
Guangyan Xu, Yu Zhang, Jingguo Lin, Yibao Wang, Xiaoyan Shi, Yunbo Yu, Hong He
Summary: This study investigated the mechanism of ammonia selective catalytic oxidation (NH3-SCO) on Ag/Al2O3 catalysts using operando spectroscopy. The results showed that silver nanoparticles are the active sites for NH3 oxidation, while silver cations are inert in this reaction. The NH3-SCO reaction on 10 wt % Ag/Al2O3 could be divided into three regions, and the reaction pathway is closely related to oxygen activation on the silver nanoparticles.
Article
Chemistry, Applied
Aleksandra Jankowska, Agata Chlopek, Andrzej Kowalczyk, Malgorzata Rutkowska, Wlodzimierz Mozgawa, Marek Michalik, Shiquan Liu, Lucjan Chmielarz
Summary: Deposition of copper by TIE method results in samples containing highly dispersed copper species and CuO nanorods, while deposition of highly dispersed copper species inside pores can be achieved through the TIE-NH3 procedure. Samples obtained by TIE-NH3 method are found to be promising catalysts for low-temperature NH3-SCR process.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Optics
Vishav Deep Sharma, Pooja Khajuria, Ram Prakash, R. J. Choudhary
Summary: This research article focuses on the synthesis and characterization of Na(1_ x)Zr2Smx(PO4)(3) (x = 0.005-0.05) phosphors. The phase purity, lattice parameters, chemical states, and morphology of the synthesized phosphors were thoroughly investigated. The study identified a strong characteristic emission from Sm3+ ions and extensively explored the effect of doping concentration on the photoluminescence spectra. The bandgap of the phosphors was measured and found to be in the range of 4.25 - 4.56 eV.
Article
Engineering, Electrical & Electronic
Vishav Deep Sharma, Pooja Khajuria, Ram Prakash, R. J. Choudhary
Summary: This article reports the successful synthesis of high-purity NaZr2(PO4):Eu3+ phosphate phosphor by solution combustion synthesis which emits in the reddish region. The structural, vibrational, elemental composition, electronic, and optical characteristics of the synthesized phosphor were analyzed using various measurements. The phosphor showed emission in the visible area due to the magnetic dipole transition of the Eu3+ ions, and it exhibited a high color purity of 94% in the reddish region. These findings suggest that the phosphor could be suitable for various optoelectronic devices, including phosphor-converted whitelight-emitting diodes.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Jinxiu Wang, Xianfang Yi, Qingfa Su, Jinsheng Chen, Zongli Xie
Summary: Researchers have developed novel FeCeVTi and MnCeVTi catalysts for low temperature selective catalytic reduction of NOx with NH3. The 7%FeCeVTi catalyst showed optimal performance with high NOx conversion, N-2 selectivity, and resistance to SO2, while the addition of MnOx improved catalytic activity but reduced N-2 selectivity and did not enhance resistance to SO2 and H2O. The NH3-SCR reaction on the CeVTi sample followed the E-R mechanism, while the FeCeVTi catalyst exhibited a combination of E-R and L-H mechanisms.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Ka -Ming Leung, Chi-Kin J. Tsui, Ching-Kit Ho, Chang-Zhong Liao, Hei-Tung Yau, Kwong-Yu Chan, Chi-Ying Li
Summary: In this study, a catalyst for low-temperature catalytic reduction of NO was synthesized using calcinated UiO-66(Zr) as a host for doping of cerium, manganese, and titanium, followed by the dispersion of 1.0 wt% platinum. A solid solution of Ce0.15Zr0.54Mn0.11Ti0.20O2/1.0Pt (CZMTO/Pt) was successfully synthesized and demonstrated significant NO reduction in the laboratory, with NO conversion above 80% at 160 degrees C.
Article
Chemistry, Applied
Dimitrios K. Pappas, Karoline Kvande, Maria Kalyva, Michael Dyballa, Kirill A. Lomachenko, Bjornar Arstad, Elisa Borfecchia, Silvia Bordiga, Unni Olsbye, Pablo Beato, Stian Svelle
Summary: This study investigated the performance of Cu-exchanged mordenite zeolites in the direct conversion of methane to methanol, finding that these materials also exhibit activity for NH3 Selective Catalytic Reduction of NOx. The active site requirements for these two reactions were shown to be different.
Article
Energy & Fuels
Xiao Tan, Yiming Zhou, Suitao Qi, Guangxu Cheng, Chunhai Yi, Bolun Yang
Summary: In this study, a Fe-modified Mn-based molecular sieve catalyst was prepared by directly loading urea using a stepwise impregnation method, demonstrating good low-temperature urea-SCR activity. The research results confirm the mechanism of urea reacting with NO at low temperatures and provide theoretical support through density functional theory calculations.
Review
Chemistry, Physical
Wangxiang Pan, Jingping He, Guanlin Huang, Wentao Zhang, De Fang
Summary: This paper reviews the preparation methods, properties, and influencing factors of ZSM-5 catalysts in NH3-SCR, discusses the SCR performance of ZSM-5 catalysts doped with different metal ions, and summarizes the environmental adaptability of ZSM-5 catalysts and their development in denitrification.
Article
Chemistry, Physical
Seokhyun Lee, Jung-Hyun Lee, Heon Phil Ha, Jongsik Kim
Summary: The study compared metal vanadates and oxide composites as active phases for selective catalytic NOx reduction (SCR) by investigating their performance under different conditions. Results showed that surface species with acidic functionalities and redox sites significantly influenced the efficiency and performance of SCR reactions. Kinetic assessments and temperature-resolved Raman spectroscopy revealed differences in the reaction kinetics and catalyst functionalities, leading to variations in acidic cycling efficiency and resistance to various catalyst poisons.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Seokhyun Lee, Jung-Hyun Lee, Heon Phil Ha, Jongsik Kim
Summary: In this study, Cu3V2O8 and CuO-VO2/V2O5 were selected as model phases of metal vanadates and oxide composites, isolated by regulating the pH of their synthetic mixture. It was found that these materials exhibited differences in infrared spectroscopic properties.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Xinyue Hu, Jialing Chen, Shaokang He, Tingyu Liang, Shenke Zheng, Lijun Lu, Chenxi Hao, Kaixin Chen, Tingting Li, Lan Yi, Li Guo, Xiaoqin Wu
Summary: Three OP-Fe-FER-x zeolites with different Si/Al ratios and similar iron contents were compared with commercial IM-Fe/SSZ-20 zeolite for the NH3-SCR reaction. The OP-Fe-FER-x zeolites showed higher catalytic activity and hydrothermal stability than the IM-Fe/SSZ-20 zeolite. After hydrothermal aging treatments, the catalytic activity of the zeolites decreased at low temperatures due to the transformation and aggregation of active species, while it increased at high temperatures due to the deterioration of NH3 storage capacity.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Feliciano Calvo-Castanera, Jesus Alvarez-Rodriguez, Nuria Candela, Angel Maroto-Valiente
Summary: Novel hybrid materials C@Fe-Al2O3 were synthesized and characterized for their catalytic behavior, with results showing correlation between carbon surface compositions and catalytic activities, making them suitable for alternative reactions in valorization of industrial effluents. In aqueous media, hybrid samples with the highest graphitic characteristic and most hydrophobic behavior exhibited the highest conversion of phenol.
Article
Chemistry, Applied
Katarzyna Swirk Da Costa, Gerard Delahay, Abdelali Zaki, Karim Adil, Amandine Cadiau
Summary: The HKUST-1 catalysts impregnated with vanadium, niobium, and manganese showed improved catalytic activity in NH3-SCR for NO removal after pre-treatment at 185 degrees C. Additionally, the commercial HKUST-1 promoted with Mn exhibited a decrease in NO and NH3 conversions when water vapor was added, but the conversions quickly recovered upon stopping water vapor feeding.
Article
Environmental Sciences
Nawel Jraba, Thabet Makhlouf, Gerard Delahay, Hassib Tounsi
Summary: The study involves the preparation and characterization of copper-loaded eta-alumina catalysts with different copper contents for catalytic reactions. Experimental results indicate that the impregnation/evaporation method is beneficial for highly dispersed copper oxide species on the surface at low copper contents. Wet impregnation allows for a well dispersion of copper species on the alumina surface for low copper contents, leading to similar catalytic performance in the selective catalytic oxidation of NH3.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
Maria Perez-Cadenas, Esther Asedegbega-Nieto, Jonathan Carter, James A. Anderson, Inmaculada Rodriguez-Ramos, Antonio Guerrero-Ruiz
Summary: Carbon nanotubes were prepared by modified CVD method and treated with acidic and basic solutions to introduce specific surface functional groups. The treated CNTs were reacted with a non-ionic Fe complex to form three composites, and various characterization techniques were used to study the interaction between them. The results showed that the interaction between the complex and CNT was greatly influenced by the functionalization of the latter.
Review
Energy & Fuels
Karim Adil, Katarzyna Swirk, Abdelali Zaki, Ayalew H. Assen, Gerard Delahay, Youssef Belmabkhout, Amandine Cadiau
Summary: Due to its high polluting effect, there has been a growing research interest in the monitoring, removal, and control of NOx in recent years. Researchers have explored the potential of metal-organic frameworks (MOFs) as adsorbents, sensors, and catalysts for NOx mitigation/control due to their high degree of functional and structural tunability. However, this field of research is still in its early stages. The challenging physical-chemical properties of NOx make this task extremely difficult, as some materials exhibit relatively weak thermal and/or chemical stability. Nevertheless, recent studies have shown promising stability properties in certain MOFs, making them potential benchmark materials for capturing and converting NOx.
Article
Chemistry, Inorganic & Nuclear
Jihene Arfaoui, Abdelhamid Ghorbel, Carolina Petitto, Gerard Delahay
Summary: Selective catalytic reduction of nitrogen oxide by ammonia was studied over new sulfate or tungsta modified CeO2-TiO2 aerogel catalysts. The incorporation of sulfate improved the dispersion of Ce species and generated new strong acid sites, while the addition of tungsta enhanced the surface oxygen activity and created new redox sites. Both modifications resulted in highly active catalysts for NO reduction.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Enrique Garcia-Bordeje, Ana Belen Dongil, Jose M. Conesa, Antonio Guerrero-Ruiz, Inmaculada Rodriguez-Ramos
Summary: The effect of adding different alkali metal or alkaline earth metal on alumina-supported Ru and Ni catalysts in CO2 methanation was studied. Ba addition increased CH4 yield, while K and Na addition increased selectivity to CO but decreased conversion. In the Ru-based catalyst series, no enhancement in conversion or CH4 yield was achieved by any of the alkali metals.
Article
Chemistry, Multidisciplinary
Houda Jouini, Imene Mejri, Joaquin Martinez-Ortigosa, Jose L. Cerillo, Carolina Petitto, Mourad Mhamdi, Teresa Blasco, Gerard Delahay
Summary: This study investigates the performance change of Fe-Cu-ZSM-5 SCR catalyst after contacting with poisoning species such as sodium and potassium. It is found that the introduction of alkali metals does not deteriorate the crystallinity and morphology of zeolite crystals, but leads to a significant loss of surface acidity, resulting in a dramatic deactivation of the SCR reaction.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Engineering, Chemical
Phuoc Hoang Ho, Katarzyna Swirk Da Costa, Giancosimo Sanghez de Luna, Magdalena Jablonska, Francesca Ospitali, Francesco Di Renzo, Gerard Delahay, Giuseppe Fornasari, Angelo Vaccari, Regina Palkovits, Patricia Benito
Summary: This study demonstrates a simple and reproducible method to prepare Co3O4 coated on metallic foams and investigates its catalytic performance in the decomposition of N2O. The obtained structured catalysts show stable performance and lower pressure drop compared to combustion or precipitated catalysts.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Agriculture, Multidisciplinary
Virginia Cruz Fernandes, Valentina F. Domingues, Marta S. Nunes, Renata Matos, Iwona Kuzniarska-Biernacka, Diana M. Fernandes, Antonio Guerrero-Ruiz, Inmaculada Rodriguez Ramos, Cristina Freire, Cristina Delerue-Matos
Summary: A new application of graphene-type materials combined with GC-ECD/GC-MS/GC-MS/MS detection was used for the simultaneous analysis of 12 brominated flame retardants in Capsicum cultivar samples. The materials showed good adsorption capability and did not compromise the extraction efficiency of target analytes. The developed method exhibited excellent recoveries, good linearity, and low limits of quantification.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Esther Asedegbega-Nieto, Ana Iglesias-Juez, Marco Di Michiel, Marcos Fernandez-Garcia, Inmaculada Rodriguez-Ramos, Antonio Guerrero-Ruiz
Summary: Structure-sensitive catalyzed reactions can be influenced by several parameters. It has been established that Pd-C species are responsible for the behavior of Pd nanoparticles in a butadiene hydrogenation reaction. Experimental evidence suggests that subsurface Pd hydride species govern the reactivity of this reaction, and the formation/decomposition of PdHx species is sensitive to the dimensions of Pd nanoparticle aggregates, which controls the selectivity in this process. High-energy X-ray diffraction (HEXRD) is the main methodology used to determine this reaction mechanism.
Article
Materials Science, Multidisciplinary
Nikita Kolobov, Abdelali Zaki, Katarzyna Swirk, Partha Maity, Luis Garzon-Tovar, Giasemi K. Angeli, Alla Dikhtiarenko, G. Delahay, Pantelis N. Trikalitis, Abdul-Hamid Emwas, Amandine Cadiau, Omar F. Mohammed, Christopher H. Hendon, Karim Adil, Jorge Gascon
Summary: Despite efforts to develop efficient Ti-based metal-organic framework (MOF) photocatalysts, MIL-125-NH2 remains the benchmark, and few design principles have been offered to improve photocatalytic performance. Linker functionalization in Ti MOFs has been shown to enhance photocatalysis under visible light by closing the electronic band gap and improving charge carrier lifetimes. The role of node nuclearity and topology on photocatalytic activity in known Ti-based MOFs is still unclear. Here, we report a new MOF, ICGM-1, with a 3D-connected framework featuring 1D Ti-O rods. Photocatalytic hydrogen evolution experiments reveal a significant difference in activity, solely attributed to node geometry. Time-resolved spectroscopy and DFT calculations explain these differences in terms of electronic and geometric properties, paving the way for the development of Ti-MOF photocatalysts.
ACS MATERIALS LETTERS
(2023)
Article
Engineering, Environmental
Mouna Sayehi, Gerard Delahay, Hassib Tounsi
Summary: A simple and easy process for synthesizing zeolite using waste glass and aluminum scraps was reported in this study. The recovered solid after hydrothermal treatment at 60 degrees C for 6 days was identified as zeolite Na-LTA contaminated with a small quantity of Na-P1.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
D. H. Carrales-Alvarado, A. B. Dongil, A. Guerrero-Ruiz, I Rodriguez-Ramos
Summary: The study demonstrates higher selectivity in hydrogenating 1,3-butadiene to butene using formic acid compared to gaseous hydrogen.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
A. B. Dongil, J. M. Conesa, L. Pastor-Perez, A. Sepulveda-Escribano, A. Guerrero-Ruiz, I. Rodriguez-Ramos
Summary: The carbothermal synthesis of monometallic and bimetallic molybdenum carbide and copper catalysts supported on high surface area graphite was studied for the hydrogenation of CO2 to methanol. The catalysts showed different phases and behaviors at different temperatures, with the bimetallic sample being less affected by the formation of hydride. The presence of copper increased the activity and selectivity of molybdenum carbide, leading to a cooperation reaction between copper and molybdenum phase.
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)
