Article
Chemistry, Physical
Raimundo N. S. Lima, Janaiina Souza-Garcia, Camilo A. Angelucci
Summary: This paper reports the electrooxidation process of C3 polyalcohols on a Ag roughened electrode decorated with Pt atoms in an alkaline medium. It was found that molecules with vicinal OH groups, such as glycerol and 1,2-propanediol, exhibited higher electrochemical activity than 1,3-propanediol. In situ surface-enhanced Raman spectroscopy (SERS) revealed that the electrooxidation products were mainly carboxylates, with selectivity towards lactate. The study highlights the potential of using a low Pt load Ag & Pt electrode for the selective electrooxidation of C3 polyalcohols in an alkaline medium, where Pt significantly improves the electrocatalytic activity of Ag in a tandem mechanism.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Yong-Hui Yu, Sheng-Li Huang, Guo-Yu Yang
Summary: Using the photosensitized Ru((NNN)-N-perpendicular to-N-perpendicular to)(2)-metalloligand, a series of Ce frameworks were synthesized, which showed photocatalytic activities in both sulfide oxidation and hydrogen production. The doping of Zr and the oxidation state of Ce significantly influenced the photocatalytic properties of the Ce frameworks.
Article
Engineering, Environmental
Yaeun Seo, Min Woo Lee, Hyun Jae Kim, Jin Woo Choung, ChangHo Jung, Chang Hwan Kim, Kwan-Young Lee
Summary: The study showed that doping with appropriate amounts of Ag can increase the oxygen storage capacity of the catalyst and form active Pd-0 species, leading to improved catalytic activity for the oxidation of CO and C3H6.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Fei Wang, Zhao Li, Honghong Wang, Min Chen, Changbin Zhang, Ping Ning, Hong He
Summary: This study demonstrates that Ag-0 nanoparticle has an advantage over single-atom Ag species in its intrinsic activity for CO oxidation. The larger Ag-0 particle benefits oxygen activation and improves valence stability during oxidation reactions, leading to superior performance in CO oxidation.
Article
Chemistry, Physical
Marcos A. R. da Silva, Ingrid F. Silva, Qi Xue, Benedict T. W. Lo, Nadezda Tarakina, Barbara N. Nunes, Peter Adler, Sudhir K. Sahoo, Detlef W. Bahnemann, Nieves Lopez-Salas, Aleksandr Savateev, Caue Ribeiro, Thomas D. Kuhne, Markus Antonietti, Ivo F. Teixeira
Summary: This study presents an alternative method for the preparation of highly active Fe single-atom catalysts (SACs) with Fe-N4 sites, which exhibit high selectivity in the oxidation of C-H bonds. The catalyst obtained through ion exchange can effectively oxidize C-H bonds to ketones under light irradiation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Liang Zhao, Wei Cai, Guanfeng Ji, Jianwei Wei, Zenggang Du, Cheng He, Chunying Duan
Summary: This study reports an anthraquinone-based metal-organic framework (MOF) as a bifunctional photocatalytic platform to simultaneously activate inert C-H bonds and oxygen for C-H bond oxidation. The MOF exhibits great chemical stability and synergistic photocatalytic effects. The platform can efficiently oxidize substrates containing benzylic C(sp(3))-H bonds under visible light irradiation.
INORGANIC CHEMISTRY
(2022)
Article
Energy & Fuels
Lihong Guo, Wenlei Xie, Chunli Gao
Summary: The heterogenization of Keggin-structure heteropoly acids (HPAs) on activated carbon modified with metal ions (Cs+, K+ and Ag+) resulted in efficient solid catalysts for biodiesel production. The 35%H6PV3MoW8O40/AC-Ag hybrid catalyst showed high catalytic performance in transesterification of soybean oil, with good recyclability and resistance to impurities. This novel solid catalyst offers an efficient and sustainable approach for biodiesel production, particularly from low-quality oils.
Article
Engineering, Environmental
Yan Gao, Miao Yan, Liangting Chen, Jianshe Zhao
Summary: This study successfully improved the diesel desulfurization efficiency using magnetic supported catalysts. The selected catalyst showed high catalytic activity in the oxidation of organic sulfides with H2O2 as oxidant. The catalyst can be magnetically recycled and reused for ten consecutive cycles without significant decrease in activity. GC-MS and EPR results confirmed the oxidation of sulfides to sulfones in the presence of center dot OH radical.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Yi-Hu Ke, Chun-Mei Zhu, Huan-Huan Xu, Xue Wang, Hai Liu, Hong Yuan
Summary: In this study, a series of supported Au catalysts were constructed to investigate their effectiveness in catalytic oxidizing glycerol to glyceric acid (GLYA) at room temperature. Among these catalysts, the Au/ZrO2@C catalyst exhibited the best catalytic performance, achieving a glycerol conversion rate of 73% and a GLYA selectivity of 79% under the optimized reaction conditions. The support structure, metal-support interactions, and the presence of small metallic Au nanoparticles were identified as the primary factors contributing to the catalyst's high activity and selectivity.
Article
Environmental Sciences
Jin Wang, Jihui Zhang, Yahui Song, Xianmang Xu, Mengyun Cai, Peichuang Li, Wenpeng Yuan, Yujiao Xiahou
Summary: In this research, a highly recyclable catalyst of Ag-based agarose hydrogel was successfully fabricated through a simple reduction method. The hydroxyl functional groups in agarose effectively control the growth and dispersion of Ag nanoparticles in the hydrogel, ensuring the reusability of the catalyst. The hydrogel showed great potential as a catalyst for reducing aromatic organic pollutants, achieving high conversion rates and efficient reduction of various pollutants.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Inorganic & Nuclear
Isabel Guerrero, Clara Vinas, Xavier Fontrodona, Isabel Romero, Francesc Teixidor
Summary: An original cooperative photoredox catalytic system has been synthesized, in which noncovalent interactions link the metallacarborane catalyst and the oxidation catalyst, improving catalytic efficiency and avoiding costly covalent bonding. Significant electronic coupling between the two catalysts was identified in electrochemical studies in water.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Han-Jung Ryu, Won Kyu Lee, Jong Yun Choi, Jae-Seung Lee
Summary: This study investigates the catalytic properties of Ag-M bimetallic nanoparticles and the impact of precursor-induced silver halide byproducts, finding that the catalytic properties are significantly enhanced by removing AgCl with ascorbic acid. The study provides guidance for the controlled synthesis of high purity bimetallic nanoparticles and their efficient applications in various fields.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Hongdan Zhang, Zhiwei Wang, Weidu Wang, Chunyang Wu, Tingting Lu, Yifei Zhang, Peng Cheng, Zhen Zhao
Summary: A facile one-pot synthesis method was used to prepare Ag@silicalite-1 catalyst with different silver amine complex mixtures as precursors. The catalyst was characterized using various techniques and showed higher activity in styrene oxidation reaction. The use of ethylenediamine led to Ag nanoparticles with a narrower size distribution and smaller size in the catalyst.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Mojtaba Amini, Younes Mousazade, Zahra Zand, Mojtaba Bagherzadeh, Mohammad Mahdi Najafpour
Summary: Ultra-small and highly dispersive iron oxide hydroxide has been characterized and shown to exhibit high efficiency and stability in chemical reactions, making it a promising catalyst with potential applications in various fields. The compound is effective for alcohol oxidation, organic sulfide oxidation, and alkene epoxidation reactions, and demonstrates good catalytic activity in water oxidation.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Inorganic & Nuclear
Guanlun Guo, Jing Yu, Mingrui Wei
Summary: In this study, an Ag-CeO2-LSCF composite catalyst was prepared by impregnation method. The change in catalytic soot performance of the LSCF catalyst before and after composite was investigated. The results showed that the A-C-L composite catalyst exhibited a good microstructure and had lower characteristic temperatures compared to pure LSCF. The catalytic performance of the A-C-L composite catalyst was found to be the best when the Ag content was 8 wt%.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Applied
T. A. Bugrova, T. S. Kharlamova, V. A. Svetlichnyi, A. S. Savel'eva, M. A. Salaev, G. V. Mamontov
Summary: The formation of Pt species on the CeO2 surface in Pt/CeO2 catalysts is influenced by Pt content and treatment conditions, with oxidative decomposition temperature of the Pt precursor being a key factor defining the state and size of the Pt species formed. High pretreatment temperature leads to strong Pt-CeO2 interaction and smaller Pt particles, while low temperature treatment results in pronounced agglomeration of Pt species.
Article
Chemistry, Applied
M. A. Salaev, A. A. Salaeva, O. V. Vodyankina
Summary: The study demonstrates that Cs, Re, and Cl promoters can enhance the performance of silver catalysts in ethylene epoxidation by adjusting the substrate location, electronic density distribution, and substrate binding strength to optimize the reaction.
Article
Chemistry, Applied
Tamara S. Kharlamova, Margarita V. Salina, Valery A. Svetlichnyi, Mikhail A. Salaev, Andrey I. Stadnichenko, Grigory V. Mamontov
Summary: This study focuses on the design of ceria-supported Pt-Ag bimetallic catalysts for the reduction of 4-nitrophenol. The addition of silver to platinum and the conditions used for bimetallic catalyst treatment can enhance catalyst activity. The optimal Pt:Ag ratio depends on the sample pretreatment and can impact the catalyst's activity.
Article
Chemistry, Physical
A. V. Shabalina, E. D. Fakhrutdinova, A. G. Golubovskaya, S. M. Kuzmin, S. V. Koscheev, S. A. Kulinich, V. A. Svetlichnyi, O. V. Vodyankina
Summary: BSO nanomaterials were prepared via laser processing in liquid phase in a two-step scheme, demonstrating improved photocatalytic performance. Additional laser treatment led to active interaction between Bi and Si-containing species, stimulating the formation of phases with Bi-O-Si bonds.
APPLIED SURFACE SCIENCE
(2022)
Review
Chemistry, Physical
M. A. Salaev, L. F. Liotta, O. V. Vodyankina
Summary: This review focuses on recent advances in lanthanoid-containing Ni-based DRM catalysts, including the performance of catalysts supported on different oxides, modification with noble or transition metals, and the organization of interfaces. The features of high-performance DRM catalysts are analyzed, and the challenges and opportunities in the rational design of lanthanoid-containing Ni-based catalysts for dry reforming of methane and other hydrocarbons are discussed.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Yulia A. Belik, Andrei A. Vodyankin, Elena D. Fakhrutdinova, Valery A. Svetlichnyi, Olga V. Vodyankina
Summary: The study identifies the key role played by the stable Bi(III)-EG complex in the reduction of Bi3+ to a metallic state during the synthesis of bismuth silicates. By considering factors such as solvent, precipitation agent, Si-containing component, and calcination procedure, bismuth silicate composite materials with high photocatalytic performance can be obtained.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Chemistry, Physical
Darya Y. Savenko, Mikhail A. Salaev, Valerii V. Dutov, Sergei A. Kulinich, Olga V. Vodyankina
Summary: The catalytic processing of biorenewable raw materials into valuable products is gaining increasing attention. In this study, silica-supported FePO4 and Fe-Mo-O catalysts were prepared and their phase composition and catalytic properties were studied in the selective oxidation of propylene glycol. The results showed that the supported Fe-Mo-O/SiO2 catalysts exhibit promising performance for the selective oxidation of polyatomic alcohols under low-temperature conditions.
Article
Chemistry, Multidisciplinary
V Torbina, S. Ten, O. Vodyankina
Summary: A family of isoreticular metal-organic frameworks based on UiO-66 structure were synthesized and compared with unsubstituted UiO-66 in terms of catalytic performance in liquid-phase oxidation of propylene glycol with hydrogen peroxide. The nature of substituent significantly affected the conversion of propylene glycol and the efficiency of oxidant utilization.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Physical
Anastasiia V. Shabalina, Ekaterina Y. Gotovtseva, Yulia A. Belik, Sergey M. Kuzmin, Tamara S. Kharlamova, Sergei A. Kulinich, Valery A. Svetlichnyi, Olga V. Vodyankina
Summary: The properties of three bismuth silicate-based photocatalysts and their relationship with photocatalytic activity were studied using electrochemical methods. The impact of solution components on the semiconductor/liquid interface was investigated, and it was found that the medium in which measurements were carried out significantly affected the results.
Article
Chemistry, Multidisciplinary
Anastasiia Shabalina, Alexandra G. Golubovskaya, Elena D. Fakhrutdinova, Sergei A. Kulinich, Olga V. Vodyankina, Valery A. Svetlichyi
Summary: Laser methods are used to prepare complex functional nanomaterials, which have applications in biomedicine, optoelectronics, and heterogeneous catalysis. In this paper, complex oxide and composite nanomaterials based on Bi and Si were produced using laser ablation in liquid followed by powder annealing. Characterization techniques were used to analyze the samples, and their ability to decompose organic molecules was demonstrated.
Article
Chemistry, Multidisciplinary
Eleonora La Greca, Tamara S. Kharlamova, Maria V. Grabchenko, Luca Consentino, Daria Yu Savenko, Giuseppe Pantaleo, Lidiya S. Kibis, Olga A. Stonkus, Olga V. Vodyankina, Leonarda Francesca Liotta
Summary: In this study, CeO2, MnO2, and CeMnOx mixed oxide were prepared using sol-gel method. The obtained supports were used to synthesize silver catalysts by the impregnation method. The selective catalytic reduction of NO by C3H6 was investigated, and the physical-chemical properties of the catalysts were characterized. The Ag/CeMnOx catalyst showed the highest activity due to its high dispersion and distortion of the fluorite-type phase and the presence of dispersed Ag+/Ag-n (delta+) species.
Review
Chemistry, Multidisciplinary
D. Goncharova, M. Salaev, A. Volokitina, O. Magaev, V Svetlichnyi, O. Vodyankina
Summary: Gold-based catalysts, especially ultrasmall gold nanoparticles, exhibit exceptional catalytic activity. Advanced preparation techniques, such as pulsed laser ablation, can enhance the performance of gold-based catalytic materials by controlling their surface and morphological features. Recent research has focused on studying the relationship between synthesis, structure, and performance of these materials, as well as their applications in photo and electrocatalysis.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Physical
Vera P. Tuguldurova, Olga V. Vodyankina, Alexander Fateev
Summary: The most favorable pathways for the formation of 2-methylimidazole (2MI) in aqueous solution have been determined. The formation of 2MI occurs through a series of intermediates, and the condensation of amine intermediates is the most thermodynamically and kinetically favorable route. Experimental studies have confirmed the selectivity of 2MI formation is achieved by successive mixing of acetaldehyde with ammonia.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
