Article
Chemistry, Physical
Marios Kourtelesis, Tamara Siqueira Moraes, Lisiane Veiga Mattos, Dimitrios K. Niakolas, Fabio Bellot Noronha, Xenophon Verykios
Summary: A study was conducted on Pt/CeO2 catalysts with different support morphologies for low temperature ethanol steam reforming, revealing that support morphology influences certain reaction routes, while the reaction scheme remains the same regardless of the support. At 573K, Pt/CeO2- PPT exhibited rapid deactivation, while Pt/CeO2- NR remained rather stable. XPS surface analysis showed significant Pt reduction on CeO2 nanorods at 573K, leading to the reduction of Ce4+ into Ce3+.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Review
Chemistry, Physical
S. Anil, S. Indraja, R. Singh, S. Appari, B. Roy
Summary: This article examines the impact of modifying nickel with various noble and non-noble metals and altering supports with different metal oxides on ethanol steam reforming (ESR) reaction. It explores the reaction mechanisms and thermodynamics, emphasizing the importance of catalyst morphology, active metal promoter, and support modifier in hydrogen production and carbon deposition prevention.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Israel R. Azevedo, Andressa A. A. da Silva, Yutao T. Xing, Raimundo C. Rabelo-Neto, Niels T. J. Luchters, Jack C. Q. Fletcher, Fabio B. Noronha, Lisiane V. Mattos
Summary: This study investigated the influence of dopants (Gd, Nb, Pr, and Zr) on the performance of Pt/CexMe1-xO2-g/Al2O3 catalysts for methane steam reforming. The results showed that dopants improved the reducibility and stability of the catalysts, with Nb-doped ceria demonstrating the highest stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Applied
Paola Riani, Gabriella Garbarino, Tullio Cavattoni, Guido Busca
Summary: Two Co/SiO2 catalysts exhibit different catalytic behaviors in CO2 methanation and reverse water gas shift reactions, with carbon nanotubes produced not affecting the catalyst activity.
Article
Chemistry, Physical
Huanyang Wu, Bo Yang
Summary: This study used density functional theory calculations and microkinetic modeling to investigate the structure sensitivity of ethanol steam reforming (ESR) over Rh catalyst. The dominant reaction paths on stepped Rh(2 1 1) and terraced Rh(1 1 1) surfaces were determined. Microkinetic analysis revealed that Rh(2 1 1) exhibited higher activity and CO2 selectivity than Rh(1 1 1), but lower stability due to carbon deposition. A high steam/ethanol ratio was found to be important in reducing carbon accumulation and improving CO2 selectivity. The study also identified the rate-controlling steps and the effect of metal dopants on the catalyst stability.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
Chenxu Guo, Hanning Xiao, Wenming Guo, Tingting Bao, Jiawei Xie, Hang Qin, Pengzhao Gao
Summary: CuO-ZnO-CeO2 catalysts were prepared on Al2O3/cordierite monolith through sol-gel combustion method, and the effects of combustion temperature on the properties and performance of the catalysts were investigated. The catalyst (CZC-400) prepared at 400 degrees C showed uniform distribution on the monolith with smaller particle size (4.2 nm) and higher surface area (23.7 m(2) g(-1)). In methanol steam reforming, CZC-400 exhibited 100% methanol conversion at 260 degrees C without by-product CO, and maintained excellent catalytic activity and stability for 32 hours.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Vildan Aker, Nezihe Ayas
Summary: Ethanol steam reforming (ESR) is a promising technology for hydrogen production, and the study focuses on the influence of cobalt loading and ESR conditions on H2 selectivity and catalytic stability. Ni-Co/Al2O3 (5 wt% Co) catalyst exhibited the best performance with small metal crystallite size, high surface area, and high catalytic activity. Optimal conditions for 100% ethanol conversion and maximum H2 selectivity were found to be 600°C, 0.05 L/gcat.h, and S:C molar ratio of 12:1. The Ni-Co interaction was found to affect the catalytic activity, and the stability test showed minimal coke deposition.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Didi Li, Zhen Wang, Shiqing Jin, Minghui Zhu
Summary: This study investigates the deactivation and regeneration mechanisms of the Cu/ZnO/Al2O3 catalyst in low temperature methanol steam reforming. It is found that the deactivation is mainly caused by the poisoning of Cu species associated with surface-oxygenated species, rather than carbon deposition and strong metal-support interaction. Furthermore, the addition of O-2 can partially restore the catalytic activity.
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Energy & Fuels
Ruiling Li, Chengyuan Liu, Li Li, Junjie Xu, Jinjin Ma, Jiaqi Ni, Jing Yan, Jun Han, Yang Pan, Yi Liu, Lilin Lu
Summary: Regulating the chemical state of Co sites by preferred exposure of CeO2 facets enables the development of high-performance Co-based catalysts for ethanol steam reforming reaction. The as-prepared Co/CeO2-(M) catalyst, with Co sites in lower oxidation state, exhibits higher C-C bond cleavage capability and more excellent catalytic performance than Co/CeO2-(U), achieving a hydrogen selectivity as high as 97% at ethanol conversion of 100%. This work provides an effective strategy to enhance the catalytic performances of Co-based catalysts for ethanol steam reforming reaction and expands the understanding about ethanol steam reforming reaction mechanism.
Article
Chemistry, Physical
Magdalena Greluk, Wojciech Gac, Marek Rotko, Grzegorz Slowik, Sylwia Turczyniak-Surdacka
Summary: The addition of citric acid improved the dispersion and reduced particle size of metal particles, while catalysts prepared from ammonia solution showed the largest metal particle size. In steam reforming of ethanol, dehydrogenation of ethanol takes place preferentially on terrace sites, while cleavage of C-C bond is favored by edge/steps sites.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Hetong Li, Yuchun Zhang, Peng Fu, Ranran Wei, Zhiyu Li, Lei Dai, Andong Zhang
Summary: A type of nano NiO-Fe2O3/Al2O3 Fe-based OC was developed for glycerol CLSR, which can be easily reduced and re-oxidized. The study established optimal conditions and demonstrated improved cycle stability with the addition of Ni.
Article
Chemistry, Applied
Tingting Bao, Hui Zhou, Yi Zhang, Chenxu Guo, Wenming Guo, Hang Qin, Pengzhao Gao, Hanning Xiao, Weixiong Liu
Summary: Ni/CeO2 catalysts supported on SiC porous ceramics were studied for ethanol steam reforming process. The presence of CeO2 improved the resistance to carbon deposition compared to Ni catalysts. The catalysts prepared by microemulsion and impregnation methods exhibited a regular semicircular spherical shape. Under ESR conditions, the ethanol conversion rate remained at 100% and H2 selectivity was maintained at 74% for Ni/CeO2 catalysts with a CeO2:Ni ratio of 7. The selectivity of by-products decreased gradually with increasing CeO2 content due to the adsorption and oxidation of CO and CHx species by CeO2.
JOURNAL OF RARE EARTHS
(2023)
Article
Chemistry, Physical
Sergio Iglesias-Vazquez, Jose Valecillos, Aingeru Remiro, Javier Bilbao, Ana Guadalupe Gayubo
Summary: The regeneration of NiAl2O4 spinel derived catalysts for ethanol steam reforming is challenging due to irreversible deactivation caused by Ni volatilization and catalyst particle fragmentation. The Al2O3 content in the catalyst influences the irreversible deactivation, which can be controlled by reducing the catalyst at 700-750 degrees C.
Article
Chemistry, Physical
Didi Li, Fang Xu, Xuan Tang, Sheng Dai, Tiancheng Pu, Xianglin Liu, Pengfei Tian, Fuzhen Xuan, Zhi Xu, Israel E. Wachs, Minghui Zhu
Summary: The surface structure of catalysts plays a crucial role in their catalytic performance. This study reveals that manipulating the catalyst surface reconstruction process can enhance long-term stability and catalytic activity by controlling the composition of reducing agents during activation.
Article
Chemistry, Physical
HuaLun Zhu, Ziyin Chen, Laura Pastor-Perez, Xiangyi Long, Marcos Millan
Summary: Tar removal by catalytic steam reforming is important in gasification hot gas treatment. The effect of a full syngas mixture on this reaction has not been comprehensively investigated. This study analyzes the effect of each component and their combinations on steam reforming of toluene as a biomass gasification tar model. The presence of H2 and CH4 promotes catalyst deactivation, while CO and CO2 have minor inhibitory effects.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Applied
Simona Renda, Marta Cortese, Giuseppina Iervolino, Marco Martino, Eugenio Meloni, Vincenzo Palma
Summary: This study investigated the electrification of reforming processes by using commercial silicon carbide (SiC) heating elements as catalyst carriers to provide heat directly for the reaction. The experiments demonstrated the possibility of realizing a process by reversing the flow of heat, achieving higher methane conversion rates in both steam and dry reforming reactions.
Article
Green & Sustainable Science & Technology
Concetta Ruocco, Vincenzo Palma, Marta Cortese, Marco Martino
Summary: Oxidative steam reforming of bioethanol was studied using Pt-Ni/CeO2-SiO2 and Ru-Ni/CeO2-SiO2 catalysts with noble metal content ranging from 0-3 wt%. Increasing the noble metal content improved the catalysts' resistance to deactivation, but a further increase up to 2 wt% was detrimental for stability. The most durable catalyst (2 Pt-10Ni) showed complete conversion and stable H-2 yield above 50% when tested under a raw bioethanol stream for 100 h at 4.1 h(-1).
Article
Energy & Fuels
Concetta Ruocco, Marta Cortese, Marco Martino, Vincenzo Palma
Summary: This work investigates the oxidative steam reforming reaction of fuel grade bioethanol in a fluidized bed reactor using a 2Pt-10Ni/CeO2-SiO2 catalyst. The study demonstrates the potential of using bioethanol as a raw feed for cheaper production of bio-hydrogen. The catalytic activity and stability of the 2Pt-10Ni/CeO2-SiO2 catalyst is found to be promising, with high hydrogen yields and low carbon formation rates.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Review
Energy & Fuels
Eugenio Meloni, Marco Martino, Giuseppina Iervolino, Concetta Ruocco, Simona Renda, Giovanni Festa, Vincenzo Palma
Summary: Currently, there is a growing focus on applying renewable energy sources to reduce greenhouse gas emissions in the automotive sector and domestic applications. This review article explores the catalytic processes involved in sustainable reforming and CO2 utilization for hydrogen production. The study highlights the possibility of successful production of green and sustainable hydrogen as a power storage technology, as well as the potential for converting CO2 into hydrocarbons.
Review
Energy & Fuels
Eugenio Meloni, Giuseppina Iervolino, Concetta Ruocco, Simona Renda, Giovanni Festa, Marco Martino, Vincenzo Palma
Summary: The review provides an overview of the latest research on the electrification of industrial chemical processes for hydrogen production and energy generation using proton exchange membrane fuel cells. It examines microwave and resistive heating methods and compares catalyst formulations and reactor configurations. The review also analyzes the use of alternative catalysts for PEMs, such as iron or cobalt.
Article
Energy & Fuels
Eugenio Meloni, Marco Martino, Mariaconcetta Pierro, Pluton Pullumbi, Federico Brandani, Vincenzo Palma
Summary: In this study, the feasibility of using microwave-assisted regeneration of a 13X zeolite bed for N2O capture from tail gases was investigated. The experimental results showed that the microwave did not damage the zeolite's structure and the presence of H2O and O-2 in the feed stream reduced the adsorbent capacity. However, the adsorbent capacity could be recovered through microwave-assisted regeneration.
Article
Energy & Fuels
Eugenio Meloni, Bruno Rossomando, Gianluigi De Falco, Mariano Sirignano, Ivan Arsie, Vincenzo Palma
Summary: The study focuses on the detailed analysis of particle size distributions during the active regeneration of a loaded catalytic diesel particulate filter (CDPF) on an L-D diesel engine. It was found that compared to a standard DPF, the CDPF significantly reduces particle emissions during regeneration and exhibits a bimodal particle size distribution. At the end of regeneration, significant reductions in particle sizes were observed.
Article
Energy & Fuels
Eugenio Meloni, Liberato Cafiero, Marco Martino, Vincenzo Palma
Summary: This study investigates the production of NTP-assisted catalytic ammonia at milder temperatures and ambient pressure. Experimental results show that the 10Ni/zeolite 13X sample exhibits the best catalytic activity (about 4 mmol h(-1) NH3 production) with the lowest energy consumption, highlighting the feasibility of this innovative technology in this field.
Article
Engineering, Chemical
Benedetta Anna De Liso, Vincenzo Palma, Gianmaria Pio, Simona Renda, Ernesto Salzano
Summary: The partial oxidation of ethylene in a methane atmosphere by pure oxygen is a vital industrial process, but its production is limited by kinetic and safety issues due to the high reactivity and exothermicity. Adopting mild operative conditions can manage side reactions and improve the process performance. In the future, using liquefied ethylene and oxygen-enriched air as heat sources can promote innovative and sustainable solutions. This study focuses on the experimental and numerical characterization of ethylene/methane/nitrogen/oxygen mixtures at different operative conditions, aiming to identify operational limits and sustainable conditions.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Simona Renda, Emma Palo, Michele Colozzi, Vincenzo Palma
Summary: This study focused on the effect of each component in the simulated refinery tail-gas streams on the hydrolysis reaction of carbonyl sulfide (COS). It was found that high concentrations of water and carbon dioxide inhibit the hydrolysis reaction. Computational analysis revealed different adsorption mechanisms for each species present in the hydrolysis system. The reaction rate expression obtained in this study was proven to be applicable to a wide range of operating conditions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Chemistry, Physical
Emilia Saraceno, Concetta Ruocco, Vincenzo Palma
Summary: Despite the increasing demand for chemicals and energy, the complete replacement of fossil feedstocks with renewables is currently not feasible. However, the combination of biomass and non-renewable matrix-based technologies could provide a greener alternative for partially substituting traditional fuels. The hydrogasification of carbonaceous feedstocks, such as coal and biomass, offers a promising solution for the production of CH4. This review highlights the advancements in the process, reactor design, and catalysts used in hydrogasification, as well as the efforts to improve hydrogen production, energy efficiency, and reduce pollutant emissions. The co-hydrogasification of renewable and non-renewable feedstocks is also discussed, along with the role of catalysts and impurities in the reaction kinetics.
Article
Chemistry, Physical
Eugenio Meloni, Liberato Cafiero, Simona Renda, Marco Martino, Mariaconcetta Pierro, Vincenzo Palma
Summary: Reducing the concentration of CO2 in the atmosphere is crucial for combating climate change, and Carbon Capture and Utilization (CCU) technology provides a means to use this molecule for chemical production. This study investigated the catalytic Non-Thermal Plasma (NTP)-assisted hydrogenation of CO2 to CH4 using different catalysts in a Dielectric Barrier Discharge (DBD) reactor. The results showed that NTP significantly improved the catalytic performance, achieving the same CO2 conversion at a temperature 150 degrees Celsius lower than conventional thermal reaction. Bimetallic catalysts demonstrated the best performance, with a CO2 conversion of 97% at approximately 180 degrees Celsius and lower energy consumption compared to similar catalysts in the literature.
Article
Engineering, Chemical
Olga Muccioli, Eugenio Meloni, Simona Renda, Marco Martino, Federico Brandani, Pluton Pullumbi, Vincenzo Palma
Summary: In this study, microwave-assisted N2O decomposition technique was investigated, taking advantages of microwave's properties of direct and selective heating. Results showed that by coupling the catalytic system with an appropriately designed microwave heated reactor, total N2O conversion and selectivity could be achieved in a highly concentrated N2O stream (50 vol%), similar to the conventionally heated process for removing N2O from a less concentrated gas stream (20 vol%).
Article
Green & Sustainable Science & Technology
Eugenio Meloni, Emilia Saraceno, Marco Martino, Antonio Corrado, Giuseppina Iervolino, Vincenzo Palma
Summary: The dry reforming of methane (DRM) process converts methane and carbon dioxide into syngas, but it has a significant CO2 footprint due to the fossil fuel combustion required for heat. The process also faces challenges in heat transfer to the catalytic volume. This study proposes the electrified DRM process using two Ni-based structured catalysts, Silicon carbide (SiC) honeycomb monolith and Si-SiC open-cell foam, to enhance heat and mass transport phenomena.
Article
Engineering, Chemical
Giovanni Festa, Palma Contaldo, Marco Martino, Eugenio Meloni, Vincenzo Palma
Summary: The propylene production processes currently used in the petrochemical industry are unable to meet the increasing demand. Alternative processes such as propane dehydrogenation (PDH) have been investigated, and a catalyst based on hydrotalcite PURALOX MG70 showed the best performance in terms of propane conversion and selectivity to propylene.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(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)
