Article
Chemistry, Inorganic & Nuclear
Dongao Xie, Changxin Tang, Dan Li, Jiren Yuan, Feigao Xu
Summary: In this study, FeOCl/WS2 composites with a visible light response were synthesized and their catalytic activity for acid orange II (AO-II) degradation was investigated. The results showed that when the weight ratio of FeOCl and WS2 was 1:2, the removal efficiency of AO-II by FeOCl/WS2 was 5.3 and 35.6 times higher than that of pure FeOCl and pure WS2, respectively. The degradation rate of AO-II by the F1W2 composite catalysts can reach 93.4%.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Environmental Sciences
Kun Lin, Shahzad Afzal, Liheng Xu, Tao Ding, Feng Li, Ming Zhang
Summary: This study synthesized a Fe-containing red mud biochar (RMBC) as a photo-Fenton catalyst for degrading acid orange 7 (AO7). Results showed that RMBC had excellent degradation performance with a decolorization efficiency of nearly 100% and a mineralization efficiency of 87% under visible light irradiation. The study also revealed the reaction mechanism of RMBC, including the activation of H2O2 by Fe2+ provided by RMBC and the production of more reactive oxygen species (ROS) for AO7 degradation under light irradiation.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Environmental
Mahmoud Samy, Andy Gyamfi Kumi, Eslam Salama, Marwa ElKady, Kenneth Mensah, Hassan Shokry
Summary: This study investigated the fabrication of zinc oxide/water hyacinth-based activated carbon (ZnO/AC) and nano-magnetite (NM) (NM/ZnO/AC) nanohybrid for application in a photo-Fenton-like system. The optimal conditions for carbofuran degradation were determined to be pH 3, initial carbofuran concentration of 5.0 mg/L, PS concentration of 0.0923 mM, and NM/ZnO/AC catalyst dose of 0.9 g/L. The degradation efficiency was affected by hydroxyl and sulfate radicals, and the presence of dissolved organic matter, turbidity, and inorganic ions in water matrices. The use of suspended NM/ZnO/AC showed higher degradation efficiencies and mineralization ratios compared to immobilized mode.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Materials Science, Multidisciplinary
Negin Iranparast Poshtiri, Ahmad Dadvand Koohi, Azadeh Ebrahimian Pirbazari, Fatemeh Esmaeili Khalil Saraei
Summary: In this study, magnetite fish scales and tea waste were used as adsorbents for Cu(II) cations and then applied as photo-Fenton catalysts to degrade methyl orange. The effects of different factors on the degradation efficiency were investigated and the catalytic action was attributed to the formation of hydroxyl radicals. The results showed that Cu-MFS and Cu-MTW exhibited high degradation efficiency and good stability.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Environmental
Qiang Zhao, Congcong Zhang, Xiaoqiang Tong, Yunling Zou, Yan Li, Fang Wei
Summary: Fe3O4-NPs/orange-peel (MOP) composite was prepared as a magnetic heterogeneous Fenton-like catalyst, demonstrating high efficiency in degrading organic dye wastewater with excellent catalytic stability and easy separation. The composite holds great promise for low-cost and high-efficiency treatment of organic dye wastewater.
WATER SCIENCE AND TECHNOLOGY
(2021)
Review
Engineering, Environmental
Naomi A. Bury, Kathryn A. Mumford, Geoffrey W. Stevens
Summary: Electrochemical regeneration of Granular Activated Carbon is an efficient method for removing organic contaminants from water. By controlling critical operating parameters and understanding the regeneration mechanisms, optimal operating conditions can be achieved, enhancing the commercial prospects of these technologies.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Jieru Guo, Ge Song, Minghua Zhou
Summary: In this study, highly dispersed FeN-CNTs catalysts were synthesized and applied in Hetero-EF process, which significantly improved the removal of pollutants under a wide pH range. FeN-CNTs/Hetero-EF achieved efficient degradation of CBZ at low current density and catalyst dosage.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Jong-Hwan Park, Jim J. Wang, Dong-Cheol Seo
Summary: The study demonstrated that Fe-BC had higher Fe impregnation efficiency and more reduced Fe(II) than Fe-AC at the same pyrolysis temperature, resulting in better MB removal efficiency in the HFR reaction. Fe-BC primarily degraded MB, while Fe-AC mainly adsorbed it. Furthermore, Fe-BC exhibited higher MB treatment efficiency and stable Fe ion release during 5 consecutive HFR reactions compared to Fe-AC.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Engineering, Environmental
Jian Shen, Yahui Wu, Yaohua Yang, Qiongzhi Zhou, Xiang Liu, Tianxiang Wei, Xinyi Yu, Yifei Yu, Haitao Li, Tian Fang
Summary: In this study, dyeing based sludge carbons were activated via alkali etching to fabricate efficient and cost-effective heterogenous electro-Fenton catalysts for halogen-containing compounds removal. The increment of alkali activation level facilitated oxygen reduction towards a two-electrons transfer pathway with a high H2O2 yield. After a reaction time of 150 min, the catalyst achieved a 100% removal rate and a 62.14% mineralization efficiency for 4-Chlorophenols (4-CPs). The activated sludge carbons showed excellent stability even after enduring five cycles.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
Xu Liu, Hui-Lai Liu, Kang-Ping Cui, Zheng-Liang Dai, Bei Wang, Xing Chen
Summary: In this study, heterogeneous photo-Fenton catalysts were prepared using sludge generated in dyeing wastewater through a simple pyrolysis method. FeCN-300 showed the highest degradation efficiency and stability, indicating its great potential for practical applications.
Article
Environmental Sciences
Shengquan Zeng, Eunsung Kan
Summary: One-step FeCl3-mediated pyrolysis/activation was developed for preparation of bermudagrass-derived FeCl3-activated biochars (FA-BCs) as a heterogeneous Fenton catalyst for heterogeneous Fenton oxidation of sulfamethoxazole (SMX) in water. The FA-BC prepared at the FeCl3 to BG mass ratio of 2 exhibited higher adsorption and Fenton oxidation of SMX than other mass ratios. SMX and COD removal efficiencies reached 99.94% and 65.19% respectively under the optimal conditions for Fenton reaction.
Article
Water Resources
Ibrahim Metin Hasdemir, Emre Yilmazoglu, Senem Gungor, Belma Hasdemir
Summary: In this study, activated carbon was prepared using hazelnut shells, orange peel, and melon seeds as raw materials. The adsorption efficiencies of the produced activated carbons were evaluated and compared with a commercial activated carbon. The results showed that the activated carbons derived from hazelnut shells and orange peel exhibited higher adsorption efficiencies.
APPLIED WATER SCIENCE
(2022)
Article
Chemistry, Physical
Emmanuel Oluwaseyi Fagbohun, Qianyu Wang, Lucas Spessato, Yuhua Zheng, Wenli Li, Abiola Ganiyat Olatoye, Yanbin Cui
Summary: The study regenerated two types of plant-based activated carbons using a green chemical mixture, resulting in increased specific surface area and carbon yield. The activated carbons showed high adsorption capacity for methyl orange.
SURFACES AND INTERFACES
(2022)
Article
Environmental Sciences
Beichen Zhao, Jilai Gong, Biao Song, Fan Sang, Chengyun Zhou, Chen Zhang, Weicheng Cao, Qiuya Niu, Zengping Chen
Summary: This study investigated the effects of different carbon materials on the pyrite-catalyzed Fenton oxidation of ciprofloxacin. The results showed that all three carbon materials accelerated the Fenton oxidation reaction. Activated carbon (AC) had a higher adsorption capacity for ciprofloxacin, which enhanced the pyrite-catalyzed Fenton oxidation. The addition of carbon materials promoted the production of hydroxyl radicals, favoring the degradation of ciprofloxacin.
Article
Environmental Sciences
Zhimin He, Xiaoyi Xu, Bin Wang, Zhenfei Lu, Dezhi Shi, Wei Wu
Summary: In this study, iron-loaded granular activated carbon (Fe-GAC) was prepared and used as a catalyst in the heterogeneous Fenton oxidation treatment of tetracycline (TC). The Fe-GAC/Fenton system showed a higher removal rate and lower catalyst dosage compared to the GAC/Fenton system. Additionally, Fe-GAC/Fenton exhibited higher mineralization efficiency.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
A. Rita, A. L. Monteiro, R. M. Albuquerque, M. Santos, J. C. Ribeiro, L. M. Madeira, S. Sanches
Summary: Spent caustic discharges contribute to increased oil and grease content in refinery wastewater, leading to higher treatment costs; a case study on Sines refinery found that processing high kerosene cut acid crude oil may increase effluent management cost by up to 3 euro/ton of processed crude oil. Spent caustic O&G effluents typically consist of organic contaminants with low molecular weight, aromatic and polar arrangements like phenolic groups and naphthenic acids, highlighting the importance of identifying suitable technologies for treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Green & Sustainable Science & Technology
Claudio Rocha, M. A. Soria, Luis M. Madeira
Summary: The study investigated the steam reforming process of olive oil mill wastewater (OMW) to reduce environmental damage and economically valorize the waste. Ni-Ru/SiO2 catalyst exhibited high catalytic performance and stability when tested with synthetic OMW effluent.
Article
Chemistry, Multidisciplinary
Alvaro Perez-Molina, Luisa M. Pastrana-Martinez, Lorena T. Perez-Poyatos, Sergio Morales-Torres, Francisco J. Maldonado-Hodar
Summary: Graphitic carbon nitride (g-C3N4) was utilized to enhance the photocatalytic activity of ZnO nanoparticles for the degradation of 5-fluorouracil (5-FU) cytostatic drug. CN/ZnO composites were synthesized with varied g-C3N4 loading through a thermal method, resulting in improved mesoporosity, light absorption ability, and aromaticity. The highest activity was achieved with CN/ZnO composite containing 25 wt% of g-C3N4 (CN25/ZnO), exhibiting complete degradation of 5-FU, mineralization of 48% after 180 min, and good photostability during reuse cycles. Reactive oxygen species (ROS), including radicals and non-radical species, were identified as the main active species responsible for 5-FU degradation. A photocatalytic mechanism for CN/ZnO composites was also proposed.
Article
Chemistry, Applied
Ana M. Regadera-Macias, Sergio Morales-Torres, Luisa M. Pastrana-Martinez, Francisco J. Maldonado-Hodar
Summary: A series of adsorbents and photocatalysts were developed using agricultural residues (olive stones) as raw materials. The materials were characterized and tested for their affinity for ethylene molecules, both in terms of adsorption and photooxidation. The goal was to identify parameters that can improve the performance of the samples.
Article
Chemistry, Applied
L. T. Perez-Poyatos, L. M. Pastrana-Martinez, S. Morales-Torres, P. Sanchez-Moreno, M. Bramini, F. J. Maldonado-Hodar
Summary: Bimetallic (Fe-Cu) and reduced graphene oxide (rGO)/FeCu catalysts with different Fe-Cu ratios were developed and tested for the degradation of cyclophosphamide using the photo-Fenton process. The results showed that the rGO/FeCu catalysts exhibited a synergistic effect and the best performance was achieved with the rGO/Fe10Cu90 catalyst. This catalyst achieved 82% degradation of cyclophosphamide at natural pH and showed good stability after consecutive degradation cycles.
Article
Chemistry, Applied
Marina Godino-Ojer, Sergio Morales-Torres, Francisco J. Maldonado-Hodar, Elena Perez-Mayoral
Summary: Transition metal-carbon aerogels, such as Mo, Fe, Co, or Cu, serve as effective and selective catalysts for the synthesis of quinoxalines 1 from o-phenylenediamine 2 and α-hydroxy ketones 3, presenting a sustainable alternative to other carbon-based catalysts or MOFs. The doping metal phase, which consists of metal oxides or zero-valent metals, along with the metal loading at the carbon aerogel surface, plays a crucial role in determining the reactivity and selectivity of the catalysts. The Mo-500 catalyst exhibits the highest efficiency and selectivity, likely working through the initial oxidation of α-hydroxy ketones followed by condensation-dehydration reactions.
Article
Environmental Sciences
Joao P. F. Venancio, Sara Ribeirinho-Soares, Luisa C. Lopes, Luis M. Madeira, Olga C. Nunes, Carmen S. D. Rodrigues
Summary: In this study, a combination of coagulation/flocculation and Fenton processes was used for tertiary treatment of urban wastewater. The results showed that the best removals of turbidity and enterobacteria were achieved with a coagulant dosage of 120 mg/L and the natural pH of the effluent. The treated water met the strictest limit for E. coli, but had a high relative abundance of potentially hazardous bacteria, emphasizing the need for microbiological characterization before reuse.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Applied
Alvaro Perez-Molina, Luisa M. Pastrana-Martinez, Sergio Morales-Torres, Francisco J. Maldonado-Hodar
Summary: Graphitic carbon nitride (g-C3N4) was synthesized using different N-rich precursors, and their structures and properties were evaluated. The photocatalytic activity of g-C3N4 materials was tested for the removal of cytostatic drugs under near UV-Vis and solar-LED irradiations. The best performing photocatalysts were prepared from melamine and thiourea under near UV-Vis irradiation, and urea showed the highest activity under solar-LED irradiation. The photoactivity of g-C3N4 materials was attributed to their surface area, well-connected and condensed structures, and high surface C/N ratios with nitrogen vacancies.
Article
Engineering, Environmental
Alejandro Jimenez, Raquel Trujillano, Vicente Rives, M. A. Soria, Lufs M. Madeira, Miguel Angel Vicente
Summary: Potentially-CO2 adsorbing solids were prepared by calcination of CaAlFe hydrocalumites at 400 and 750 degrees C. The obtained solids were characterized using different techniques, and the CO2 sorption capacity was evaluated under different conditions. The presence of Fe3+ influenced the crystalline phases and the maximum CO2 sorption capacity was achieved when Fe3+ accounted for 40 mol % of the trivalent positions. The steam presence enhanced the CO2 capture during multiple sorption-desorption cycles.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
A. Catarina Faria, C. V. Miguel, Alexandre F. P. Ferreira, A. E. Rodrigues, Luis M. Madeira
Summary: In this study, nickel-substituted hydrotalcites promoted with cesium were synthesized and their dual-function ability as a high-temperature CO2 adsorbent and methanation catalyst was evaluated. It was found that materials impregnated using the direct impregnation method had a higher number of basic sites, which facilitated greater CO2 sorption. However, these materials exhibited lower selectivity towards methane, resulting in a higher CO formation. Therefore, materials prepared using the powder impregnation method were chosen for further investigation in a parametric study.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Thermodynamics
Joao Carvalho, Anabela Nogueira, Sergio Castro-Silva, Claudio Rocha, Luis M. Madeira
Summary: Olive oil production leads to environmental damage due to the spreading of pollutant effluents. To solve this problem, the steam reforming (OMWWSR) reaction was studied. Various parameters and reactor configurations were evaluated, with the autothermal reactor (ATR) and sorption-enhanced reactor (SER) showing the best results in terms of H2 production and energy consumption. Economic analysis indicated that the ATR configuration achieved a net present value (NPV) range of 7.2-9.2 Meuro and payback times (PB) of 3-2 years, while the SER configuration had an NPV range of 4.7-12.2 Meuro and PB of 5-2 years.
Article
Environmental Sciences
Carmen S. D. Rodrigues, Sofia N. A. Aziz, M. F. R. Pereira, O. S. G. P. Soares, Luis M. Madeira
Summary: The removal of p-nitrophenol (PNP) from wastewater was evaluated using different carbon materials and their nitrogen-doped counterparts in the activated persulfate process. The study found that the specific surface area of carbon materials influenced the adsorption process, while the mesoporous area influenced the activation process. Nitrogen groups on the surface of the samples accelerated the degradation and mineralization of PNP. The stability of the nitrogen-doped carbon materials was evaluated, and the Fe/XGM sample showed stable performance without leaching of iron. The activated persulfate process achieved complete PNP oxidation and TOC removal of around 96%, making it more attractive than the Fenton method.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
J. Silva, J. C. Goncalves, C. Rocha, J. Vilaca, L. M. Madeira
Summary: This study investigated the methanation of CO2 in biogas and compared two different methanation reactors. The results showed that the cooled reactor without CO2 separation achieved a CO2 conversion rate of 91.8%, while the adiabatic reactors achieved conversion rates of 59.6% and 67.2%, resulting in an overall conversion rate of 93.0%. Economic analysis revealed negative net present worth values, indicating the need for government monetary incentives.
Article
Biochemistry & Molecular Biology
Matilde Albano, Luis M. Madeira, Carlos V. Miguel
Summary: Biogas is a valuable renewable energy source that can help reduce greenhouse gas emissions. Through the simulation of membrane reactors, the reforming process of biogas was studied, and it was found that the reaction temperature, pressure, and biogas composition have an impact on hydrogen production.
Article
Environmental Sciences
Mario R. C. Calaixo, Sara Ribeirinho-Soares, Luis M. Madeira, Olga C. Nunes, Carmen S. D. Rodrigues
Summary: This study focuses on the treatment of secondary urban wastewater to improve the effluent quality and reduce pathogenic microorganisms for safe reuse. Catalyst-free persulfate activation by radiation-based oxidation was applied as a treatment technology, and the potential beneficial role of bacterial competition in controlling the regrowth of harmful microorganisms was evaluated. The results showed that the treated wastewater diluted with 50% river water complied with the legislated limits for reuse.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(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)