Article
Chemistry, Physical
Anna Zawada, Malgorzata Lubas, Iwona Przerada
Summary: This study focuses on the production of amorphous glasses by melting materials containing iron and aluminum oxides, and evaluates the effect of iron and aluminum ions on the glass structure. The results show that the incorporation of iron and aluminum ions can strengthen the glass network and increase its viscosity.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Multidisciplinary
Zegang Qiu, Ying Wang, Yali Di, Xiaoxiong Ren, Weiwei Liu, Zhiqin Li, Guangyu Li
Summary: This study presents a 'shortcut' route for the transformation of alkylphenols by co-breaking the C-O and C-C bonds. Experimental results using 4-ethylphenol as a model compound showed high efficiency in achieving the co-breaking of C-O and C-C bonds. The influence of reaction conditions on the conversion rate and selectivity of products was investigated. Theoretical calculations also revealed the importance of the adsorption configuration of the alkylphenol molecule on the catalyst in the bond breaking process.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Franklin J. Mendez, Manuel Gonzalez-Mota, Haydee Vargas-Villagran, Gerardo Gonzalez-Garcia, Xim Bokhimi, Tatiana E. Klimova
Summary: In this study, NiMoS nanocatalysts supported on MCM-41 modified with aluminium were investigated for the hydrodeoxygenation of anisole. It was found that the catalytic behavior strongly depended on the presence of aluminium in the support and its loading. Aluminium incorporation increased the anisole conversion rates and rate constants compared to the NiMo/Si-MCM-41 sample. The highest activity was observed with the NiMo/Al-MCM-41(60) nanocatalyst. Additionally, aluminium presence in the support influenced the selectivity of the catalysts, promoting the formation of phenol as an intermediate product.
Article
Chemistry, Physical
Apakorn Phasuk, Ricardo B. B. Metz
Summary: The interaction between aluminum cations and acetone in the gas phase was studied using photodissociation vibrational spectroscopy. The spectra of Al+(acetone)(N-2) and Al+(acetone)( n ) (n = 2-5) ions were measured and compared to DFT calculated vibrational spectra to determine the structures of the complexes. The experiments showed red shift of the C=O stretch and blue shift of the CCC stretch, which decreased as the size of the clusters increased. The calculations predicted that the most stable isomer for n ≥ 3 was pinacolate, where oxidation of Al+ enabled reductive C-C coupling between two acetone ligands. Experimentally, pinacolate formation was observed for n = 5, as evidenced by a new peak at 1185 cm(-1) characteristic of the pinacolate C-O stretch.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Sang Hyun Ahn, Qiang Wang, Yongxiang Wang, Yueying Chu, Feng Deng, Suk Bong Hong
Summary: A clear understanding of the acidic properties of bridging Si-OH-Al groups in zeolites is crucial for optimizing their performance as catalysts. This study reveals the existence of previously unrecognized bridging Si-OH-Al groups in LTA zeolite with different crystallographic oxygen atoms compared to known Bronsted acid sites. The synthesis and properties of the specific type of bridging OH groups in zeolites depend on the content and spatial distribution of framework Al atoms.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Biochemistry & Molecular Biology
Evgenii S. Stoyanov, Irina Yu. Bagryanskaya, Irina V. Stoyanova
Summary: The introduction of Cl and O atoms into C-4-vinyl carbocations was investigated using X-ray diffraction analysis and IR spectroscopy. Within vinyl carbocations, Cl atoms act as strong electron donors that accept a positive charge, while O atoms result in the formation of a protonated ester molecule with a C-O(H+)-C group and a C=C bond. The attachment of Cl directly to a C=C bond increases its electron density, with the positive charge concentrated on the Cl atom.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Long Chen, Jing Wu, Guo-Ping Lu, Qiang Zhang, Tianyue Su, Chun Cai
Summary: An efficient Al(PO3)3-supported NiMo bimetallic catalyst has been developed for the hydrodeoxygenation of lipids to alcohols. A synergistic catalytic effect between Ni and Mo is observed, with H2 being mainly activated by Ni0 and Ni3P sites, while lipids are mainly absorbed on Mo sites. The presence of Al(PO3)3 not only inhibits oxidation of Ni and Mo species, but also promotes the formation of Ni3P, which enhances the reaction. Additionally, the catalyst exhibits excellent stability and reusability.
MOLECULAR CATALYSIS
(2022)
Article
Energy & Fuels
Chenxi Tang, Zhaolu Feng, Xuefeng Bai
Summary: Liquid organic hydrogen carrier technology is considered to be one of the most promising solutions for hydrogen storage and transportation. To enhance its potential, addressing issues such as high hydrogen release temperature and low initial release rate is crucial. By preparing Pd catalysts supported on N-doped partially graphitized carbon using nitrogen glow discharge plasma, a higher fraction of Pd (111) facets with improved catalytic performance was achieved for hydrogen production.
Article
Chemistry, Multidisciplinary
Victoria Beltran, Andrea Marchetti, Gert Nuyts, Margje Leeuwestein, Christophe Sandt, Ferenc Borondics, Karolien De Wael
Summary: O-PTIR spectroscopy is a newly developed technique that provides high spatial resolution spectra, making it suitable for analyzing historical paintings and cultural heritage objects. By applying it to the study of Van Gogh's painting, O-PTIR has demonstrated its great potential in the analysis of cultural heritage.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Remi F. Andre, Gwenaelle Rousse, Capucine Sassoye, Maxim Avdeev, Benedikt Lassalle-Kaiser, Benoit Baptiste, Sophie Carenco
Summary: This article investigates the key compound of cerium oxide as a catalyst and identifies an intermediate phase of Ce-(IV) that forms in the presence of air. The crystal structure of this phase is proposed, and it is confirmed to be an observable intermediate in the synthesis of cerium dioxide.
CHEMISTRY OF MATERIALS
(2023)
Article
Optics
Lipeng Jiang, Xue Jiang, Jihuan Xie, Tao Zheng, Guocai Lv, Yanjing Su
Summary: Narrow- to broad-band tunable NIR luminescence was achieved by ionic substitution at different polyhedral positions, making Y-3(MgAl)(Al2Si)O-12: 0.06Cr(3+) a promising NIR material.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Physical
Henrik Ostrom, Bingjie Zhang, Tiffany Vallejo, Bryn Merrill, Jeremy Huang, Jerry LaRue
Summary: Methanol decomposition on Ni(111) surfaces has been studied in the presence and absence of oxygen, revealing that both C-H and O-H bonds break to form carbon monoxide and atomic hydrogen on the surface. The presence of oxygen stabilizes the surface H atoms, leading to slightly higher desorption temperatures.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Biochemistry & Molecular Biology
Rosangela Santalucia, Giuseppe Spoto, Lorenzo Mino
Summary: The photoreduction of the Mo6+/SiO2 system with CO was studied using an experimental setup that allowed for real-time acquisition of transmission FT-IR spectra under simultaneous UV irradiation. High-quality spectroscopic data obtained as a function of reduction time helped to better understand the different mechanisms of the photoreduction process, shedding light on the oxidation state and surface structure of supported molybdenum species.
Article
Biochemistry & Molecular Biology
Ilnaz Rakipov, Aydar Akhmadiyarov, Artem Petrov, Artashes Khachatrian, Boris Solomonov
Summary: The paper presents the investigation on intermolecular interactions between alanine and sarcosine anhydride in organic solvents. IR spectroscopy was used to measure the absorption frequencies of cyclic dipeptide in solvents. The impact of Van der Waals interactions and solvent hydrogen bonding on the absorption frequencies of anhydrides' C=O group is discussed. The spectroscopic parameters for C=O...H-O hydrogen bonding complexes between anhydride and methanol are obtained.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Abhijeet Gaur, Matthias Stehle, Marc-Andre Serrer, Magnus Zingler Stummann, Camille La Fontaine, Valerie Briois, Jan-Dierk Grunwaldt, Martin Hoj
Summary: Modulation excitation spectroscopy (MES) coupled with time-resolved X-ray absorption spectroscopy (XAS) was used to study unpromoted and Co-promoted Mo-based hydrotreating catalysts, revealing minute and instantaneous differences in active site composition under the influence of H2S and H2O, with Co promoting stability of molybdenum sulfide. Transient XAS experiments showed reversible oxidation-sulfidation processes during H2O/H2S cycling, and the presence of multiple Co phases did not inhibit the detection of changes occurring at active Co and Mo sites. Additionally, water exhibited higher affinity towards sulfided Mo sites compared to 1-propanol.
Article
Chemistry, Inorganic & Nuclear
Izabel C. Medeiros-Costa, Eddy Dib, Florent Dubray, Simona Moldovan, Jean-Pierre Gilson, Jean-Pierre Dath, Nikolai Nesterenko, Hristiyan A. Aleksandrov, Georgi N. Vayssilov, Svetlana Mintova
Summary: This study reports a method for preparing defect-free MFI crystals containing single-site framework Mo. Through extensive spectroscopic characterization and experimental analysis, the insertion of single Mo sites in MFI zeolite samples with different crystal sizes was investigated, as well as the role of silanol groups in the incorporation of Mo into the zeolite structure.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Organic
O. A. Ponomareva, P. A. Shaposhnik, V. Nazarova, D. S. Zasukhin, A. G. Popov, A. Efimov, I. I. Ivanova
Summary: This study investigates the effects of the degree of ion exchange on the physicochemical properties of FAU(Y) in terms of the sodium and cesium cations. The results show that NaY samples with varying exchange degrees can be prepared while maintaining the crystalline structure. The CsOH-modified catalysts with a Na+/Cs+ exchange degree of 54-77% exhibit the highest activity and stability in aniline alkylation with methanol.
PETROLEUM CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Maria G. Chernysheva, Artem V. Sinolits, Valeria S. Votyakova, Andrey G. Popov, Gennadii A. Badun
Summary: Hyaluronic acid shows potential as a coating to improve the biocompatibility of nanodiamond-antibiotic composites. The adsorption of hyaluronic acid is found to be higher on nanodiamonds with initially negative zeta-potential, after pre-adsorption of Miramistin, but still lower than on positively charged nanodiamonds unaffected by Miramistin. The maximum adsorption of hyaluronic acid is observed when Miramistin neutralizes the surface charge of nanoparticles.
MENDELEEV COMMUNICATIONS
(2022)
Article
Chemistry, Organic
I. A. Kasyanov, A. Efimov, A. G. Popov, A. L. Grachev, I. Dobryakova
Summary: This study investigated the development of submicron and nanocrystalline silicate materials with MFI structure in a fluorinated surfactant medium, using perfluorononanoic acid as an example. It was found that the crystal structure of the zeolite framework formed slower in fluorinated surfactants due to the presence of aluminum atoms. The fractions of Bronsted and Lewis acid sites in the synthesized zeolites were independent of the amount of aluminum introduced. Moreover, the synthesized zeolites with lower concentration of Bronsted acid sites and smaller crystal size showed similar activity and operational stability to commercially available catalysts in the oligomerization of light alkenes.
PETROLEUM CHEMISTRY
(2022)
Article
Chemistry, Organic
V. A. Vorobkalo, D. O. Bachurina, A. G. Popov, A. Efimov, I. I. Ivanova
Summary: In this study, MFI and MEL zeolites with different crystal sizes and close Si/Al ratios were successfully synthesized by hydrothermal crystallization. Pt was coated on the zeolites using incipient wetness impregnation. The results showed that the crystal size and zeolite structure had little effect on the product distribution in n-hexadecane dewaxing, but zeolites with larger crystals exhibited lower catalytic activity.
PETROLEUM CHEMISTRY
(2022)
Article
Chemistry, Physical
Alexander I. Nikiforov, Andrey G. Popov, Evgeny A. Chesnokov, Irina I. Ivanova
Summary: The supported MoO3/Al2O3-F catalysts were synthesized and characterized. The fluorination of support leads to an increase in the strength of Lewis Acid Sites and residual bridging OH groups, which enhances the propylene metathesis reaction. The results demonstrate the importance of support acidity in the catalytic process.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Organic
O. A. Ponomareva, L. Rodionova, P. A. Shaposhnik, V. Nazarova, D. S. Zasukhin, I. Dobryakova, A. G. Popov, I. I. Ivanova
Summary: This study investigates the effects of FAU(Y) crystal size on the physicochemical properties and catalytic performance of CsNaY samples in the alkylation of aniline with methanol. Reducing the zeolite crystal size was found to strengthen the CsNaY basic properties and enhance the selectivity towards N-alkylated products.
PETROLEUM CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Maria G. Chernysheva, Andrey G. Popov, Mikhail G. Dzianisik, Alexander V. Egorov, Tolganay B. Egorova, Alexander V. Gopin, Artem A. Mitrofanov, Gennadii A. Badun
Summary: Hydrogen treatment is a popular method for surface modification of nanodiamonds. In this study, atomic hydrogen treatment of the functionalized surface was used to gently increase its hydrophobicity and maintain its overall composition. The corresponding mechanism was revealed through a combination of theoretical and experimental methods.
MENDELEEV COMMUNICATIONS
(2023)
Article
Chemistry, Organic
A. I. Nikiforov, E. A. Chesnokov, A. G. Popov, I. A. Nikiforov, I. I. Ivanova
Summary: Supported catalysts Mo/Al2O3 modified with (NH4)(2)SiF6 and H3BO3 were synthesized and tested for the metathesis of propylene. The support modifications had different effects on the catalyst acidity, with (NH4)(2)SiF6 not altering it while the interaction with boric acid increased the acidity. Dual modification with both (NH4)(2)SiF6 and H3BO3 enhanced the catalyst activity but led to faster deactivation.
PETROLEUM CHEMISTRY
(2023)
Article
Chemistry, Physical
Vladislav Gorbunov, Aleksey Buryak, Kirill Oskolok, Andrey G. Popov, Irina Tarkhanova
Summary: In this article, a series of effective catalysts based on betaine and sulfuric or phosphomolybdic acids were obtained. These compositions were characterized and tested in the oxidation of sulfur- and nitrogenous-containing compounds by H2O2. The acidity change is non-linearly influenced by the amount of heteropolyacid (HPA), and the removal of sulfur-containing compounds is correlated with the concentration of Bronsted acid sites on the catalyst surface. On the other hand, the removal of pyridine is primarily determined by the content of heteropolyacids in the catalyst.
Review
Multidisciplinary Sciences
Nikolai Nesterenko, Izabel C. Medeiros-Costa, Edwin B. Clatworthy, Hugo Cruchade, Stanislav Konnov, Jean-Pierre Dath, Jean-Pierre Gilson, Svetlana Mintova
Summary: Methane-to-chemicals processes offer a chance to enhance the decarbonization potential of renewable energy and unlock sustainability value. Integrating methane-to-chemicals process with the downstream industry can lead to a greener and more sustainable future. Gas-to-chemicals is an efficient tool for boosting decarbonization.
NATIONAL SCIENCE REVIEW
(2023)
Article
Chemistry, Organic
V. A. Artamonova, A. G. Popov, I. I. Ivanova
Summary: MEL zeolite synthesized by steam-assisted crystallization method showed high phase purity, large micropore volume, and high concentrations of acid sites. Its acidic properties were characterized by IR spectroscopy using probe molecules. In terms of catalytic performance, this zeolite proved to be comparable to MFI-type zeolites.
PETROLEUM CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Mohammad Fahda, Louwanda Lakiss, Kamila Goldyn, Edwin Clatworthy, Marie Desmurs, Jean-Pierre Gilson, Svetlana Mintova, Valentin Valtchev
Summary: Non-chemical post-synthetic approach using constant pressure can shrink zeolite crystals, enhancing their catalytic activity by improving molecular diffusion.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Abdelhafid Ait Blal, Dusan Stosic, Philippe Bazin, Alexandre Vimont, Arnaud Travert
Summary: This study presents a new method for investigating the mass transport properties of acidic zeolite-based materials. By combining gravimetric analysis and infrared spectroscopy, diffusion within the various components of the material can be monitored and distinguished. The method was applied to a mechanical mixture of FAU and MFI zeolites, allowing for the identification of diffusion domains with high and low effective diffusion rate constants.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Tianyi Shen, Maria G. Chernysheva, Gennadii A. Badun, Andrey G. Popov, Alexander Egorov, Neli M. Anuchina, Ivan S. Chaschin, Natalia P. Bakuleva
Summary: The research found that nanodiamonds can form adsorption complexes with levofloxacin and amikacin, reducing the dose of antibiotics used and decreasing their use in the postoperative period.
COLLOIDS AND INTERFACES
(2022)
Article
Chemistry, Applied
Qingyuan Zheng, Jack H. Williams, Scott Elgersma, Mick D. Mantle, Andrew J. Sederman, G. Leendert Bezemer, Constant M. Guedon, Lynn F. Gladden
Summary: In this study, a pilot-scale fixed-bed reactor compatible with NMR/MRI was developed for Fischer-Tropsch synthesis. Multiple magnetic resonance techniques were applied to quantitatively characterize different product species within catalyst pellets, providing valuable information for catalyst and reactor optimization.
Article
Chemistry, Applied
Lisa Ramisch, Sebastian Pfaff, Sabrina M. Gericke, Edvin Lundgren, Johan Zetterberg
Summary: We present a combination of optical operando techniques that allow simultaneous measurement of adsorbed species on catalyst surfaces, monitoring of surface oxide formation, and imaging of the gas phase above the catalyst surface. The experimental setup was validated by studying CO oxidation on Pd(100) at different pressures, revealing the effects of pressure on the heterogeneous catalytic reaction.
Article
Chemistry, Applied
Marta Paniagua, Gabriel Morales, Juan A. Melero, Daniel Garcia-Salgado
Summary: The influence of common impurities in levulinic acid on the catalytic performance of different acid catalysts for bio-jet fuel production was studied. It was found that furfural had the greatest detrimental effect on catalyst performance, while propyl-sulfonic acid-modified SBA-15 and sulfonic acid resin Amberlyst-70 showed good regeneration ability.
Article
Chemistry, Applied
Jesus Tapiador, Pedro Leo, Guillermo Calleja, Gisela Orcajo
Summary: This study presents a new MOF material, Zn-URJC-13, with acid and basic sites, permanent porosity, and high affinity to CO2 molecules. The Zn-URJC-13 catalyst exhibits efficient performance in CO2 cycloaddition reactions and can be reused multiple times.
Article
Chemistry, Applied
Dan Zhao, Vita A. Kondratenko, Dmitry E. Doronkin, Shanlei Han, Jan-Dierk Grunwaldt, Uwe Rodemerck, David Linke, Evgenii V. Kondratenko
Summary: This study demonstrates the potential of cheap and commercially available Zr or Ti-based supports and ZnO to serve as active and selective catalysts for propane dehydrogenation (PDH). The catalytically active species formed in situ under PDH conditions consist of isolated ZnOx. ZnOx on the surface of LaZrOx shows the highest rate of propene formation.
Article
Chemistry, Applied
Hanbyeol Kim, Jung Rae Kim, Young-Kwon Park, Jeong-Myeong Ha, Jungho Jae
Summary: In this study, metal phosphates were used as catalysts for biomass conversion to produce sustainable aromatics through DielsAlder cycloaddition reactions. The effects of synthesis method, activation method, and P/Ti molar ratio on the structure and acid properties of titanium phosphate catalysts were systematically studied. The mesoporous titanium phosphate catalyst synthesized by hydrothermal method at 180℃ for 12 h followed by ethanol refluxing at 60℃ for 24 h at a molar P/Ti ratio of 1 showed the highest surface area and acid site density.
Article
Chemistry, Applied
Yasin Khani, Sumin Pyo, Kwang-Eun Jeong, Chul-Ung Kim, Moonis Ali Khan, Byong-Hun Jeon, Kun-Yi Andrew Lin, Siyoung Q. Choi, Young-Kwon Park
Summary: A protonated form of Zeolite Socony Mobil-5 (H-ZSM-5) catalyst was synthesized through a hydrothermal method using different sources of silica. The effect of loading the catalyst with yttrium, samarium, and gadolinium on the acidic properties was investigated. Among the metal-loaded catalysts, the Sm/LHZ catalyst showed the best performance in the methanol to propylene conversion due to its high amount of weak and intermediate acid sites, while the Gd-LHZ catalyst increased the selectivity towards ethane and propane.
Article
Chemistry, Applied
Michael Franc, Ivana Cisarova, Jan Vesely
Summary: The present study investigates an enantioselective cyclization of enals with imidazolone derivatives catalyzed by a combination of achiral Pd(0) complex and chiral secondary amine. Corresponding spirocyclic imidazolones were produced in high yields with moderate diastereoselectivity and excellent enantioselectivity. The developed co-operative catalytic methodology provides a highly substituted spirocyclic scaffold with four stereogenic centers under mild conditions.
Article
Chemistry, Applied
Mauro Alvarez, Jennifer Cueto, David P. Serrano, Pablo Marin, Salvador Ordonez
Summary: This study focuses on improving the formulation and preparation methods of catalysts for the production of dimethyl carbonate. By using suitable catalyst preparation methods and copper salt precursors, the researchers successfully produced catalysts with optimal performance for dimethyl carbonate formation.
Article
Chemistry, Applied
Claudia J. Keijzer, Luc C. J. Smulders, Dennie Wezendonk, Jan Willem de Rijk, Petra E. de Jongh
Summary: This study investigates the catalytic behavior of alpha-alumina supported silver catalysts in the presence of chloride. It is found that the particle size of silver can affect the selectivity of the catalyst, but different strategies lead to different results. In this size range, the selectivity of ethylene oxide is correlated to the Ag : Al2O3 surface ratio.
Article
Chemistry, Applied
Takeshi Aihara, Wataru Aoki, Michikazu Hara, Keigo Kamata
Summary: The development of acid-base bifunctional catalysts is important for promoting specific chemical transformations. In this study, Ti-based perovskite oxides were synthesized and used as catalysts for two C-C bond-forming reactions (cyanosilylation and Knoevenagel condensation). The highly pure SrTiO3 nanoparticles with a high specific surface area exhibited the highest catalytic performance, and could be easily recovered and reused.
Article
Chemistry, Applied
Olga Gorlova, Petra Pribylova, Eliska Vyskocilova, Katerina Peroutkova, Jan Kohout, Iva Paterova
Summary: This study investigates the Baeyer-Villiger oxidation of beta-cyclocitral using tin-modified mixed oxides as catalysts. The optimal reaction conditions and the effects of various factors on the reaction course and selectivity were determined. The results show that tin-modified mixed oxides exhibit high activity and selectivity in the oxidation reaction.
Article
Chemistry, Applied
M. I. Avila, M. M. Alonso-Doncel, L. Briones, G. Gomez-Pozuelo, J. M. Escola, D. P. Serrano, A. Peral, J. A. Botas
Summary: The catalytic fast pyrolysis of lignin using ion-exchanged zeolite catalysts showed significant improvements in bio-oil quality and the production of aromatic hydrocarbons and oxygenated compounds.
Article
Chemistry, Applied
Enrico Catizzone, Giorgia Ferrarelli, Paolo Bruno, Girolamo Giordano, Massimo Migliori
Summary: The acid-catalysed alcohol conversion reaction is a promising route for de-fossilization strategies. Research on pure alcohol conversion and simultaneous dehydration of mixed alcohols have shown different product compositions, with the type and distribution of acid sites affecting the reaction mechanism.
Article
Chemistry, Applied
Alireza Ranjbari, Juho Kim, Jihee Yu, Jiyun Kim, Mireu Park, Nayoung Kim, Kristof Demeestere, Philippe M. Heynderickx
Summary: This study investigated a novel kinetic model for the adsorption and photocatalytic degradation of methyl orange using commercial ZnO and reduced ZnO photocatalysts. The results provided new insights into the interaction of catalysts with molecules of different charges and compared with a previous study on methylene blue. The presence of oxygen vacancies in ZnO and their effects on adsorption and photocatalytic degradation were analyzed, and the photocatalytic degradation rate of reduced ZnO was found to increase significantly.
