Article
Chemistry, Physical
Wenxi Qiu, Xiaojuan Chen, Yuanting Liu, Dan Xiao, Pengfei Wang, Ran Li, Kui Liu, Zhaoyu Jin, Panpan Li
Summary: This work demonstrates the incorporation of CuOx active species into a TiO2 nanotube reactor for selective electrocatalytic nitrate reduction reactions. The diffusion of the intermediate NO2- is hindered due to the nanoconfined space, leading to a high faradaic efficiency and conversion rate of nitrate to ammonia. Theoretical insights further support the understanding of the surface and interface interactions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Applied
P. S. F. Ramalho, O. S. G. P. Soares, J. L. Figueiredo, M. F. R. Pereira
Summary: Nitrogen oxides play a significant role in environmental pollution, highlighting the importance of developing techniques to treat these gas emissions. The selective catalytic reduction of NOx with carbon, instead of NH3, is a promising alternative technology. This study focuses on synthesizing carbon catalysts that are effective in reducing NO emissions. Surface modifications, including introducing nitrogen and oxygen functionalities and copper as a metallic phase, significantly enhance the catalytic activity. The optimal copper-to-carbon mass ratio of 10% leads to 100% NO conversion at 440 degrees C, indicating the high performance of the AC_M_BM@10Cu catalyst. The presence of N2 and CO2 was confirmed, while N2O and CO were not detected. Some catalyst deactivation was observed after 38 hours of reaction.
Article
Engineering, Environmental
Minkyu Jeon, Eunsong Lee, Minsu Kim, Hyunwook Jegal, Sangbin Park, Jun Hwa Chi, Sehyun Baek, Jongmin Lee, Sang-In Keel
Summary: Researchers investigated the emission levels of NO and N2O from existing coal-fired power plants and future carbon-neutral coal/ammonia co-fired power plants. They found a correlation between NO and N2O gases generated during combustion, and analyzed the emissions during the SNCR and SCR processes of NOx. They also observed a linear correlation between CO and N2O concentrations. The findings of this study can help control the emission levels of air pollutant NO and greenhouse gas N2O in thermal power plants.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Review
Chemistry, Multidisciplinary
Jordi Sans, Marc Arnau, Pau Turon, Carlos Aleman
Summary: This review summarizes the recent developments of permanently polarized hydroxyapatite (pp-HAp) and its applications in catalysis. pp-HAp is obtained by a thermal stimulation polarization process, which increases crystallinity and electrical conductivity. pp-HAp shows significant advantages in catalyzing the fixation of carbon and nitrogen gases.
MATERIALS HORIZONS
(2022)
Article
Chemistry, Physical
Dinesh Dhanabal, Sridhar Sethuram Markandaraj, Sangaraju Shanmugam
Summary: The performance of transition metal (TM) active sites (Fe, Co, Ni, Cu, and Zn) with nitrogen heteroatoms in one-dimensional carbon nanorods for electrochemical reduction of nitric oxide reaction (eNORR) to produce NH3 was investigated. The Ni nanoparticle-embedded nitrogen-doped carbon nanorods (Ni-NCNR) showed superior NH3 faradaic efficiency (FENH3) and NH3 yield rate compared to other TM-NCNR catalysts. The strategic design of various Ni-NCNR and systematic control experiments revealed that Ni-NCNR700 achieved the highest FENH3 of 85.5±0.8% at a low overpotential of 610 mV and a substantial NH3 yield rate of 23.8±2.6 μmol cm-2 h-1. The Ni-NCNR700 electrocatalyst demonstrated excellent cyclability and long-term stability.
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
Chemistry, Physical
Na Zhou, Zhi Wang, Ning Zhang, Di Bao, Haixia Zhong, Xinbo Zhang
Summary: Developing effective electrocatalysts is essential for ammonia synthesis and addressing water pollution caused by nitrate. This study fabricates Cu/Cu2O as a suitable catalytic system starting from controllable crystal facets of Cu2O particles and investigates the relationship between the chemical state of copper and product selectivity in nitrate reduction reaction. The oxide-derived Cu-0 (OD-Cu) cube achieves a high ammonia Faradaic efficiency and productivity through enhanced nitrate adsorption and lower reaction barrier.
Article
Nanoscience & Nanotechnology
Eleonora Romeo, Maria Fernanda Lezana-Muralles, Francesc Illas, Federico Calle-Vallejo
Summary: The electrocatalytic reduction of oxidized nitrogen compounds (NOx) is important for rebalancing the nitrogen cycle. This study explores the use of catalytic matrices to extract features of active transition metal catalysts for NO electroreduction. The matrices reveal that active catalysts stabilize *NHO over *NOH and have undercoordinated sites, indicating their potential in NOx electroreduction.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Yujie Wang, Wanqiang Yu, Xiao Li, Jiayuan Yu, Weijia Zhou
Summary: Nitrogenous pollutants have caused serious environmental pollution and pose threats to human life and the ecological environment. The electrochemical reduction of nitrogenous pollutants to ammonia using clean electric energy is considered an ideal technology for their recovery and utilization. Recent advancements in gas diffusion electrodes, catalyst surface enrichment, and tandem catalytic sites have helped overcome limitations such as low solubility, slow mass transfer, low partial current density, and hydrogen production competition. Furthermore, the combination of nitrogenous pollutant reactions with carbon dioxide reduction reactions has expanded their application scope. This review highlights research progress in nitrogenous pollutants reduction, presents challenges and possible future directions, and aims to provide suggestions for industrial application of electrochemical reduction of nitrogenous pollutants.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Wenshuo Hu, Renzhi Zou, Yi Dong, Yu Zhang, Mingchu Ran, Qi Xin, Yang Yang, Hao Song, Weihong Wu, Shaojun Liu, Chenghang Zheng, Xiang Gao
Summary: The study focused on enhancing the low-temperature performance of selective catalytic reduction (SCR) of NOx with NH3 by using a bifunctional catalytic system mixing V-W/Ti with an oxidative component, MnOx/CeO2. The results showed that a synergistic enhancement is significant when V-W/Ti and MnOx/CeO2 are in intimate contact, facilitating a bifunctional LT-SCR pathway mediated by a short-lived, mobile nitrite-precursor intermediate. This mechanism can effectively improve NH3 selectivity in SCR reactions.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Shengyang Zhang, Bolin Zhang, Boyu Wu, Bo Liu, Shengen Zhang
Summary: The study investigates the effects of Sm on Mn-based catalysts for SCR of NO with NH3. It is found that Sm doping improves the catalytic activity, with the Sm0.15Mn0.15Ti catalyst showing the best performance. The presence of Sm increases surface-absorbed oxygen and weakens the redox property, leading to higher NO conversion and N-2 selectivity. Rating: 8/10.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Article
Chemistry, Physical
Ge Meng, Mengmeng Jin, Tianran Wei, Qian Liu, Shusheng Zhang, Xianyun Peng, Jun Luo, Xijun Liu
Summary: In this study, molybdenum carbide nanocrystals confined by nitrogen-doped carbon nanosheets were designed as an efficient electrocatalyst for reducing nitrogen oxide to ammonia. The catalyst exhibited high Faradaic efficiency and yield rate, as well as excellent stability. Additionally, the feasibility of the catalyst was demonstrated in a Zn-NO battery.
Article
Chemistry, Applied
Pritpal S. Dhillon, Michael P. Harold, Di Wang, Ashok Kumar, Saurabh Y. Joshi
Summary: The state-of-the-art Ammonia Slip Catalyst (ASC) has a dual-layer washcoat architecture with a bottom layer of Pt/Al2O3 and a top layer of Cu/SSZ-13. A trade-off between the NH3 conversion and N-2 selectivity presents a challenge in the ASC design. The best results are obtained with the combination of a base mixed layer that provides for effective coupling between Pt and Cu active sites and a top Cu/SSZ-13 layer of an intermediate thickness and nominally half of the total Cu loading.
Article
Green & Sustainable Science & Technology
Derek Hao, Yunxia Wei, Liang Mao, Xiaojuan Bai, Yang Liu, Bentuo Xu, Wei Wei, Bing-Jie Ni
Summary: In this work, a carbon/bismuth/bismuth oxide photocatalyst was synthesized via a one-pot hydrothermal reaction. The photocatalytic ammonia yield of the optimum sample increased 3.65 times compared to alpha-Bi2O3, and the ammonia selectivity increased from 65.21% to 95.00%. The enhanced photocatalytic performance was attributed to the surface plasmon resonance of metallic bismuth and the formation of carbon, which significantly boosted electron transfer.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Multidisciplinary Sciences
Yuya Ashida, Yuto Onozuka, Kazuya Arashiba, Asuka Konomi, Hiromasa Tanaka, Shogo Kuriyama, Yasuomi Yamazaki, Kazunari Yoshizawa, Yoshiaki Nishibayashi
Summary: The development of a nitrogen fixation process that relies on renewable energy, such as visible light, is a goal in sustainable chemistry. In this study, the authors establish an iridium and molybdenum-catalysed process for synthesizing ammonia from dinitrogen under ambient reaction conditions and visible light irradiation.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Jihene Arfaoui, Abdelhamid Ghorbel, Carolina Petitto, Gerard Delahay
Summary: Higher NO-SCR performances can be obtained between 200 and 500 degrees C over the new ternary MoO3-CeO2-ZrO2 and WO3-CeO2-ZrO2 catalysts. Above 90 % NO conversions into essentially N-2 (>= 97 %) are achieved between 350 and 500 degrees C over the most efficient MoO3-CeO2-ZrO2 ternary catalyst.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Jihene Arfaoui, Abdelhamid Ghorbel, Carolina Petitto, Gerard Delahay
Summary: A new series of Mn-based catalysts prepared by the sol-gel method show high efficiency in converting NO to N2 at low temperatures. The addition of cerium and/or sulfate can adjust the activity of the catalysts and increase the conversion rate.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Katarzyna Swirk, Ye Wang, Changwei Hu, Li Li, Patrick Da Costa, Gerard Delahay
Summary: ZrO2 catalysts promoted by copper and iron were prepared using one-pot synthesis with urea. Characterized by various methods, the Fe-Zr sample showed the most promising results in NH3-SCR, being active and highly selective to N-2, especially in the presence of SO2.
Article
Chemistry, Multidisciplinary
Houda Jouini, Imene Mejri, Baker Rhimi, Mourad Mhamdi, Teresa Blasco, Gerard Delahay
Summary: The addition of Ce affects the textural and structural properties of the Fe-Cu-MFI system, with Ce-promoted samples showing better NO conversion activity up to 450 degrees Celsius. The presence of Ce in aged catalysts also reduces the loss of activity.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
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
Chemistry, Physical
Katarzyna Swirk, Gerard Delahay, Abdelali Zaki, Karim Adil, Amandine Cadiau
Summary: A series of HKUST-1 supported catalysts modified with different loadings of manganese were synthesized and characterized, with the best performance achieved by the catalyst containing 3.75 wt.% of manganese. Despite high efficiency in NO reduction, these catalysts have a narrow temperature window for the working reaction and are sensitive to the presence of water vapor and sulfur dioxide.
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, 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)
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
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
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)
Proceedings Paper
Materials Science, Multidisciplinary
M. Es-saddik, S. Laasri, A. Laghzizil, A. Guidara, K. Chaari, J. Bouaziz, H. Banouni, A. Hajjaji, M. Taha
Summary: In this study, hydroxyapatite and zirconia powders were used to fabricate HAPZrO2 composite for biomedical applications. The morphology, densification, and mechanical strength of the sintered ceramics at different temperatures were evaluated. The highest relative density and mechanical strength of HAP-ZrO2 ceramics were achieved at 1250 degrees C. Finite element method was utilized to model the stress distribution in the compacted samples, and the stress intensity factors for different geometrical dimensions of the notch were numerically evaluated.
MATERIALS TODAY-PROCEEDINGS
(2022)
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)
