Article
Chemistry, Applied
Miroslava Filip Edelmannova, Martin Reli, Peter Nadrah, Nejc Rozman, Rudolf Ricka, Andrijana Sever Skapin, Miha Nosan, Urska Lavrencic Stangar, Kamila Koci
Summary: This study aims to investigate the correlation between the structural properties of different TiO2 catalysts and their photocatalytic performance and selectivity in CO2 reduction at different pH levels. Two types of TiO2 catalysts were prepared and extensively characterized using various techniques. The prepared catalysts exhibited higher selectivity in CO2 reduction compared to a commercial P25 catalyst. The TiSG catalyst, which had the lowest portion of hydroxyl oxygen species, showed the highest photoreduction efficiency. The study also explored the effect of pH on the efficiency and selectivity of photocatalytic CO2 reduction, revealing different product distributions in acidic and basic environments.
Article
Thermodynamics
Jeanina Pandele-Cusu, Simona Petrescu, Silviu Preda, Gabriela Petcu, Madalina Ciobanu, Luminita Predoana
Summary: A comparative thermal analysis study was conducted on TiO2 system using TG/DTG/DTA and DSC. The results showed that microwave-assisted sol-gel method facilitated the amorphous-to-anatase transition in comparison with the sol-gel derived samples. The Ti-Bu-SG sample exhibited the highest photocatalytic activity towards the degradation of methyl orange.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Chemistry, Multidisciplinary
Patrick Ehi Imoisili, Tien-Chien Jen, Babak Safaei
Summary: The study synthesized a V/Ag/TiO2 nanocatalyst with enhanced photocatalytic activity, showing lower band gap and larger surface area, and demonstrating higher activity in the visible light region.
NANOTECHNOLOGY REVIEWS
(2021)
Article
Environmental Sciences
Xiumei Tao, Lei Zhu, Xun Wang, Xueqi Chen, Xian Liu
Summary: In this study, Y-ZrO2-TiO2 photocatalyst was prepared by sol-gel method, and the effects of various factors on its photocatalytic performance were investigated. The results showed that the addition of Zr and Y elements improved the photocatalytic performance of TiO2.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Ceramics
Hugo Guimaraes Palhares, Eduardo Henrique Martins Nunes, Manuel Houmard
Summary: Most studies did not systematically evaluate textural and photocatalytic properties of TiO2-SiO2 composites. This work investigates the influence of heat treatment on the structural properties and photodegradation activity. Different prepared samples showed significant differences, but heat-treated samples had similar structures and properties, with some critical differences observed due to varying resistances to crystal growth.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Environmental
Kaijing Qu, Lei Huang, Siyu Hu, Chang Liu, Qinyu Yang, Lihong Liu, Kun Li, Zuoping Zhao, Zhenxing Wang
Summary: Ciprofloxacin (CIP) is a widely found antibiotic in various types of wastewater and sediments. It is difficult to decompose and harmful to humans. The development of cheap, environmentally friendly, and efficient biochar materials for removing CIP is practical and applicable.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Alessio Zandona, Aurina Martinez Arias, Mirjam Gutbrod, Gundula Helsch, Alfred P. Weber, Joachim Deubener
Summary: Glass-ceramic nanospheres of molar composition 0.83 SiO2 • 0.17 TiO2 are produced by the sol-gel spray-drying method, followed by controlled heat treatments up to 1200 degrees C. TiO2(B) and anatase nanocrystals are precipitated in the glassy matrix, with crystal sizes increasing over time. The nanospheres exhibit noticeable photocatalytic activity under UV-A irradiation, especially during annealing stages with higher amounts of TiO2(B) and smaller crystals.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
W. Nachit, H. Ait Ahsaine, Z. Ramzi, S. Touhtouh, I. Goncharova, K. Benkhouja
Summary: TiO2 photocatalysis has wide applications in environmental and energy fields. This paper investigates the degradation of Rhodamine B using TiO2 nanoparticles under UV light. The results show that TiO2 nanoparticles can degrade 95% of RhB dye within 60 minutes under UV light.
Article
Materials Science, Multidisciplinary
Maria T. Colomer, Karent J. Duarte, Angel L. Ortiz, D. Fabio Mercado, Luz M. Ballesteros-Rueda
Summary: Doping of Pr3+ in TiO2 sols leads to reduced dispersion and increased viscosity, with lower doping proportions showing minimal crystal growth and minor transformation upon moderate calcination. Photocatalytic activity is highest in xerogels doped with 0.5 mol% Pr3+ and deteriorates with higher doping levels, while calcination at 500 degrees C decreases photocatalytic efficiency. These observations are attributed to changes in polymorph composition, crystal size, bandgap, and specific surface area with varying dopant content.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Physical
C. Gomez-Polo, S. Larumbe, A. Gil, D. Munoz, L. Rodriguez Fernandez, L. Fernandez Barquin, A. Garcia-Prieto, M. L. Fdez-Gubieda, A. Muela
Summary: The study investigates the effects of Cr and N doping on the properties of TiO2 anatase nanoparticles, including adsorption capacity, photocatalytic performance, and antibacterial response. Doping with Cr and Cr/N enhances adsorption capacity and photocatalytic performance, with Cr-TiO2 nanoparticles exhibiting antibacterial activity under visible light. The differences in electrostatic charge and nanoparticle dispersion are suggested as the main reasons for the varied antibacterial response among the doped nanoparticles.
SURFACES AND INTERFACES
(2021)
Article
Engineering, Environmental
Isis P. A. F. Souza, Lucas H. S. Crespo, Lucas Spessato, Sandra A. R. Melo, Alessandro F. Martins, Andre L. Cazetta, Vitor C. Almeida
Summary: The study focused on investigating the thermal treatment effect on the synthesis of TiO2 from sol-gel method and its photoactivity for photodegradation of tartrazine yellow dye. The evaluation of thermal parameters and response, along with process optimization using response surface methodology, revealed significant influences of three parameters on the response without any interaction effects. The optimized TiO2 (TiO2Op) showed improved photoactivity and different characteristics compared to the TiO2 with lower photocatalytic activity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Materials Science, Ceramics
Sergio Obregon, Vicente Rodriguez-Gonzalez
Summary: The use of nanostructured coatings is crucial to maintain clean surfaces in public spaces, with TiO2 thin films and coatings offering outstanding properties such as chemical stability, reusability, hydrophilicity, and activation by sunlight. These coatings are suitable for commercial devices that keep public surfaces clean and can have environmental and energy applications in purification, gas sensing, production of renewable fuels, and antimicrobial features.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Dany Edgar Juarez-Cortazar, Jose Gilberto Torres-Torres, Aracely Hernandez-Ramirez, Juan Carlos Arevalo-Perez, Adrian Cervantes-Uribe, Srinivas Godavarthi, Alejandra Elvira Espinosa de los Monteros, Adib Abiu Silahua-Pavon, Adrian Cordero-Garcia
Summary: This study synthesized TiO2 photocatalysts doped with a metallic residue (door key) as a precursor using the sol-gel method. The materials were characterized using various methods. The results showed that the doping of Cu+/Cu2+ and Zn2+ ions modified the physicochemical properties of TiO2 and improved its photocatalytic efficiency.
Article
Materials Science, Ceramics
Maira Marra, Marcello Dumont, Hugo G. Palhares, Himad A. Alcamand, Manuel Houmard, Eduardo H. M. Nunes
Summary: By adjusting the sol-gel parameters and drying/heat treatment conditions, it is possible to control the co-existence of anatase and rutile in the synthesized sol-gel titania. The lack of water in the starting solution favors the formation of both anatase and rutile, improving the photocatalytic behavior of titania.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Amina Bakhtiar, Zohra Bouberka, Pascal Roussel, Christophe Volkringer, Ahmed Addad, Baghdad Ouddane, Christel Pierlot, Ulrich Maschke
Summary: A clay-based TiO2 nanocomposite material with high efficiency in heterogeneous photocatalysis was synthesized using a sol-gel method. The material exhibited a large specific surface area and could be reused without loss of efficiency, showing a relatively quick dye purification rate.
Article
Chemistry, Physical
Dominika Przybylska, Tomasz Grzyb
Summary: Upconverting nanoparticles (UCNPs) forming stable water colloids are important for biology and medicine. This article presents the results of long-term studies on Sr0.54Lu0.36F2.5:Yb3+, Tm3+ UCNPs modified with xanthan gum as a colloid stabilizer, confirming the stability and luminescence of UCNPs in water.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Tamer M. M. Khedr, Said M. M. El-Sheikh, Maya Endo-Kimura, Kunlei Wang, Bunsho Ohtani, Ewa Kowalska
Summary: A gas-templating method was developed to prepare 2D porous S-doped g-C3N4 photocatalyst using urea and ammonium sulfate. The synthesized photocatalysts exhibited excellent physicochemical properties and showed a significant improvement in H-2 evolution under visible light irradiation. Efficient doping was identified as a key factor for high photocatalytic activity. The results demonstrated the potential of S-doped g-C3N4 for practical use under natural solar radiation.
Article
Chemistry, Multidisciplinary
Agata Markowska-Szczupak, Oliwia Paszkiewicz, Kenta Yoshiiri, Kunlei Wang, Ewa Kowalska
Summary: Mould fungi pose serious threats to humans and animals, and may be the main cause of COVID-19-associated pulmonary aspergillosis. Common disinfection methods are not effective against fungi due to their high resistance. Photocatalysis has attracted attention for its antimicrobial properties, and titania photocatalysts have been used in various applications. This study presents the efficiency of photocatalytic methods in removing fungi and bacteria, which are risk factors for SARS-CoV-2 co-infection, and suggests that photocatalysis may help prevent the severity of the COVID-19 pandemic.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2023)
Article
Chemistry, Analytical
Julian C. Brandmeier, Natalia Jurga, Tomasz Grzyb, Antonin Hlavacek, Radka Oborilova, Petr Skladal, Zdenek Farka, Hans H. Gorris
Summary: This article investigates a novel approach using upconversion nanoparticles for the detection of the COVID-19 virus and its SARS-CoV-2 variant. The upconversion-linked immunosorbent assay (ULISA) demonstrated a higher sensitivity than conventional assays, with a limit of detection of 1.3 pg/mL. Furthermore, the digital ULISA improved the detection limit by a factor of 10 compared to analog readout for SARS-CoV-2.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Neda Mohaghegh, Maya Endo-Kimura, Kunlei Wang, Zhishun Wei, Alireza Hassani Najafabadi, Fatemeh Zehtabi, Negar Hosseinzadeh Kouchehbaghi, Saurabh Sharma, Agata Markowska-Szczupak, Ewa Kowalska
Summary: For the first time, titania-based photocatalysts with different crystalline compositions and morphology were modified and tested for antimicrobial activity. The antimicrobial inactivation mechanism was found to follow two different pathways, depending on the conditions. The improved photocatalytic activity of the modified samples was attributed to the hindrance of charge carriers' recombination by phosphate anions in the modification.
APPLIED SURFACE SCIENCE
(2023)
Article
Marine & Freshwater Biology
Anna Ekner-Grzyb, Natalia Jurga, Catia Venancio, Tomasz Grzyb, Bartosz F. Grzeskowiak, Isabel Lopes
Summary: Various types of nanoparticles have been extensively studied and applied in industries, energy sector, and medicine, with the risk of their release into the environment. This study aimed to assess the influence of polyethylene glycol (PEG) modification on the toxicity of nanoparticles. The results showed that SrF2:Yb3+,Er3+ nanoparticles can be toxic to some aquatic species, with higher toxicity observed in the cnidarian Hydra viridissima. However, the structures have low toxicity effects for most of the tested species.
AQUATIC TOXICOLOGY
(2023)
Article
Engineering, Environmental
Marta Gmurek, Johannes Alexander, Pawel Mazierski, Magdalena Miody, Maciej Fronczak, Tomasz Klimczuk, Adriana Zaleska-Medynska, Harald Horn, Thomas Schwartz
Summary: The study aimed to reduce facultative pathogenic bacteria and antibiotic resistance genes from secondary effluent. The efficiency of various processes in removing antibiotic resistance genes was evaluated. The study investigated the removal of selected antibiotic resistance genes, bacterial regrowth potential, and the removal of total genomic DNA content using TiO2-CuPd photocatalysts under visible light radiation. The highest removal efficiency for most targets was achieved with TiO2-CuPd/VIS. Photocatalytic ozonation with TiO2-CuPd showed significant removal of facultative pathogenic bacteria and antibiotic resistance genes. Photocatalytic ozonation has great potential for eliminating antibiotic resistance genes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Eryk Fernandes, Pawel Mazierski, Tomasz Klimczuk, Adriana Zaleska-Medynska, Rui C. Martins, Joao Gomes
Summary: Graphitic carbon nitride (g-C3N4) catalysts were synthesized using melamine, urea, and thiourea as precursors, and their influence on photocatalytic performance was investigated. Urea-based catalyst (UCN) showed the best results under all radiation sources, followed by thiourea and melamine. UCN achieved higher degradation of parabens under UVA compared to visible light, while natural sunlight had the highest removals using UCN. UVA lamps consumed 45% less energy and costs. Photocatalytic ozonation using UCN and MCN showed superior performance and complete removal under 12 minutes.
Article
Chemistry, Physical
Szymon Dudziak, Ewa Kowalska, Kunlei Wang, Jakub Karczewski, Miroslaw Sawczak, Bunsho Ohtani, Anna Zielinska-Jurek
Summary: Anatase nanoparticles with {0 0 1}, {1 0 0}, and {1 0 1} facets were synthesized and doped with niobium to investigate the self-trapping of excess electrons and their photocatalytic activity. The presence of excess electrons and the structure of the doped anatase samples were confirmed through structural and spectroscopic analyses. The introduced electrons were found to localize on the surface titanium sites only for the {1 0 1} facets. The dopant-introduced electrons can enhance the photocatalytic activity of anatase structures with {0 0 1} and {1 0 0} facets. The dopant effect on photocatalytic activity depends on the exposed facet.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Adrian Drozdowski, Natalia Jurga, Dominika Przybylska, Julian C. Brandmeier, Zdenek Farka, Hans H. Gorris, Tomasz Grzyb
Summary: This study presents the synthesis, properties, and applications of tetragonal LiYbF4:Tm3+@LiYF4 core@shell nanoparticles. These nanoparticles exhibit intense emission in the ultraviolet range under 975 nm excitation, making them suitable for disease prevention and treatment in biomedicine.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Multidisciplinary Sciences
Sylwia Ryszczynska, Inocencio R. Martin, Tomasz Grzyb
Summary: Recently, the upconversion phenomenon has attracted attention in luminescence thermometry due to its potential for precise and remote optical thermal sensing. In this study, unique nanoparticles were synthesized and showed significant changes in emission intensity with temperature. By comparing the luminescence intensity ratios of the near-infrared bands, we demonstrate that they possess unique and excellent optical temperature sensing properties.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Multidisciplinary
Tamer M. Khedr, Said M. El-Sheikh, Ewa Kowalska
Summary: The development of visible-light-responsive semiconductor materials is important for a sustainable and better future. Bismuth tungstate (BWO) has attracted extensive attention due to its efficient light-absorption ability, adjustable morphology, low cost, and profitable chemical and optical characteristics. This study successfully synthesizes two-dimensional (2D) mesoporous BWO nanoplates using a solvothermal method, and the sample prepared under optimal conditions shows the best photocatalytic performance.
Article
Chemistry, Physical
Mateusz A. Baluk, Pawel Mazierski, Aleksandra Pieczynska, Kostiantyn Nikiforow, Grzegorz Trykowski, Tomasz Klimczuk, Adriana Zaleska-Medynska
Summary: Various metal-organic framework (MOF)/TiO2 heterostructures can be obtained by adjusting the hydrolysis and calcination steps of Ti-based MOFs. Modification of the composition with metal nanoparticles can significantly increase the efficiency of hydrogen photogeneration and the photodegradation of phenol. These improvements are related to the excitation of MOFs and TiO2, electron transfer, electron accumulation on nanoparticles, and the generation of reactive oxygen species.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Jakub Sowik, Pawel Mazierski, Tomasz Klimczuk, Kostiantyn Nikiforow, Anna Malankowska, Adriana Zaleska-Medynska
Summary: In this paper, CuxO microstructures were successfully fabricated via the electrochemical method with long, regular and well-packed CuO microwires. The effects of applied potential, sodium fluoride content, and calcination conditions on the morphology, phase composition, optical and photoelectrochemical properties were investigated. The highest photocurrent response was achieved for the sample with 0.35% sodium fluoride content, 10V applied potential, 400 degrees C calcination temperature, and 60 minutes calcination time. The mechanism of photocurrent generation in the presence of CuxO/Cu under UV-Vis irradiation was proposed.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Spectroscopy
Natalia Jurga, Sylwia Ryszczynska, Tomasz Grzyb
Summary: The properties of upconverting nanoparticles (UCNPs) are crucial for their applications in biomedicine, particularly in terms of the penetration depth of excitation light. In this article, the penetration depth of different wavelength lasers in human blood was studied, finding that near-infrared light can penetrate up to a depth of 7.5 mm. Additionally, core/shell NaErF4/NaYF4 UCNPs were found to have advantageous luminescence properties, with their emission detectable through a 3.0 mm layer of blood using a 1532 nm laser. These findings suggest that NaErF4/NaYF4 UCNPs may be ideal alternatives to NaYF4:Yb3+,Er3+/NaYF4.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(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)
