Article
Energy & Fuels
Alfonso J. Carrillo, Patricia Pizarro, Juan M. Coronado
Summary: Incorporating Cr cations in the redox couple Mn2O3/Mn3O4 can stabilize its multi-cyclic activity at high temperatures, leading to increased efficiency of energy storage systems.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Energy & Fuels
Yan Huang, Peiwang Zhu, Changdong Gu, Haoran Xu, Jinsong Zhou, Gang Xiao
Summary: This study investigates the utilization of Si to improve the reaction characteristics of pure Mn2O3 and synthesizes (Mn1_xSix)2O3 materials. The results show that the best performance is achieved at x = 3% and 5%, with reduction conversion rates of 96.18% and 94.71% respectively. Moreover, the doped (Mn0.95Si0.05)2O3 sample exhibits reduction conversion rates of 90.92% and 63.64% after cycling, indicating the promotion of the oxidation reaction by Si. This research provides guidance for large-scale, cheap, and eco-friendly energy storage applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Environmental Sciences
Seema Singh, Ritesh Patidar, Vimal Chandra Srivastava, Qicheng Qiao, Praveen Kumar, Ajay Singh, Shang-Lien Lo
Summary: This study synthesized low-toxicity and eco-friendly spherically shaped manganese oxides (alpha-MnO2, Mn2O3, and Mn3O4) using the chemical precipitation method. The variable oxidation states and diverse structures of manganese-based materials have a strong impact on electron transfer reactions. The as-prepared manganese oxides (MnOx) exhibited excellent catalytic activity for the degradation of rhodamine B (RhB) organic pollutant in the presence of peroxymonosulfate (PMS) under acidic conditions. The different oxidation states of MnOx promote oxidative-reductive reactions and the higher surface area provides ample absorption sites for pollutant interactions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Jinhuan Yao, Ying Liu, Yanwei Li, Jiqiong Jiang, Qing Zhu
Summary: Mn2O3/Mn3O4 composites are synthesized by a facile thermal decomposition strategy using MnCl2 center dot 4H(2)O and sucrose as raw materials. The addition of sucrose transforms the phase structure of manganese oxides from single Mn2O3 to Mn2O3/Mn3O4 composites, reduces particle size, and enhances zinc storage performances. The Mn2O3/Mn3O4 sample (MO-1.0) prepared with a Mn2+/sucrose molar ratio of 1:1 exhibits the best zinc storage performances, delivering high specific capacities at different current densities. This study provides a simple and cost-efficient method for preparing high-performance Mn2O3/Mn3O4 composite cathode materials for ZIBs.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Chemistry, Physical
Sangmoon Yoon, Hongmin Seo, Kyoungsuk Jin, Hyoung Gyun Kim, Seung-Yong Lee, Janghyun Jo, Kang Hee Cho, Jinseok Ryu, Aram Yoon, Young-Woon Kim, Jian-Min Zuo, Young-Kyun Kwon, Ki Tae Nam, Miyoung Kim
Summary: Understanding the chemical states and arrangements of individual surface atoms is crucial for addressing current issues such as catalysis, energy storage/conversion, and environmental protection. In this study, a profile imaging technique was used to investigate the correlation between surface atomic structures and the oxygen evolution reaction (OER) in Mn3O4 nanoparticles. It was found that surface reconstructions can deactivate low-index surfaces of Mn oxides in OER.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Energy & Fuels
Nobuyuki Gokon, Fumiya Ohashi, Hiroki Sawaguri, Kosuke Hayashi
Summary: This study investigates the heat-discharging kinetics of an iron-substituted Mn2O3/Mn3O4 redox pair subjected to long-term thermal cycling tests for next-generation concentrated solar power plants with thermochemical energy storage. Comparisons of the heat-discharging kinetics for both long-term thermal-cycled and as-prepared samples have never been discussed previously. Kinetic evaluations of samples with thermally stable morphologies subjected to long-term thermal cycling at high temperatures are important for the reproducibility and sustainability of thermochemical energy storage in solar thermal power plants. The predicted theoretical models for both samples were compared with previous kinetic data.
Article
Chemistry, Physical
Dan Shao, Xuelian Li, Min Yang, Jing Li, Rujie Chen, Xinmei Zheng, Yongfang Niu, Yanxing Qi
Summary: Porous Mn2O3 with superior pore property was synthesized by the hard-template method and applied as electrode material for supercapacitors. It exhibited higher specific capacitance and excellent cycle stability compared to block Mn2O3.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Nanoscience & Nanotechnology
Qi Zhang, Minghao Yu, Ning Wang, Junchao Qian, Yu Gu, Feng Du, Yan Lin, Feng Chen, Zhigang Chen, Zhengying Wu, Lin-Bing Sun
Summary: In this study, a porous composite of Mn2O3/pSiO(2) was constructed by inserting manganese sesquioxide nanoparticles into porous silica. The resulting material exhibited high adsorption capacity and catalytic activity for the removal of tetracycline, with potential applications in antibiotic wastewater treatment.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Boyan Wang, Zhiyuan Wang, Binlin Dou, Yan Ma, Yijing Liang
Summary: This study found that adding TiO2 into the manganese oxide TCES system can significantly improve its reoxidation process. The doping ratio of 25Ti could bring higher energy storage density.
Article
Engineering, Environmental
Anuj Kumar Prajapati, Monoj Kumar Mondal
Summary: Ternary phase Fe2O3-Mn2O3-Mn3O4 (FMM) nanocomposites were synthesized and modified by cationic CTAB surfactant to increase surface area and adsorption capacity. The CTAB modified FMM NCs showed higher functionality and better adsorption performance compared to unmodified FMM NCs, confirming spontaneous adsorption of the Congo red dye onto both NCs.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Silviya Todorova, Anton Naydenov, Maya Shopska, Hristo Kolev, Iliyana Yordanova, Krasimir Tenchev
Summary: One current issue in environmental catalysis is the development of an efficient and cost-effective catalytic system for CO oxidation. This study investigates the preparation of nano-sized alpha-Mn2O3 oxide modified with 0.5 wt.% Pt. Characterization of the catalysts using various techniques reveals the formation of finely divided PtO and Pt(OH)(2) species on the Mn2O3 surface due to strong interaction between platinum and the nano-oxide. Based on experimental and model calculations, CO oxidation on Pt/Mn2O3 is proposed to follow a Langmuir-Hinshelwood mechanism, while the Mars-van Krevelen mechanism is suggested for pure Mn2O3, indicating CO2 adsorption on oxidized sites.
Article
Chemistry, Physical
Qing Li, Xinran Li, Jiawei Gu, Yanle Li, Ziqi Tian, Huan Pang
Summary: The synthesis of porous rod-like Ni2P/Ni assemblies via a simple phosphating approach has shown excellent activity in the urea oxidation reaction. The catalyst exhibits low overpotential and Tafel slope, with outstanding durability in electrolytic cells. This work provides a new possibility for fabricating metal phosphides-metal assemblies with advanced performance.
Article
Chemistry, Multidisciplinary
Chinmayee Chowde Gowda, Ankita Mathur, Arko Parui, Partha Kumbhakar, Prafull Pandey, Sudhanshu Sharma, Amreesh Chandra, Abhishek K. Singh, Aditi Halder, Chandra Sekhar Tiwary
Summary: The depletion of non-renewable sources has led to the search for green energy alternatives. This study demonstrates that atomically thin two-dimensional Mn3O4 can catalyze oxygen reduction and evolution reactions. The presence of Mn(III) and Mn(II) sites on the Mn3O4 surface contributes to its high catalytic activity.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Physical
Sergio Tosoni
Summary: Mn3O4 Hausmannite thin films supported on (Cu, Ag, Au) coinage metals were investigated using DFT calculations. The interface between the films and metal support exhibited different lattice and ionic match, leading to different interactions. The films on Cu (111) and Au (111) weakly adhered due to unfavorable structural match, while strong adhesion was observed on Ag(100) with commensurate lattice and epitaxial growth. A negative charge flow from the support to the film was reported, resulting in the reduction of the film and an increase in magnetic moments of metal ions in the octahedral sublattice. The ferrimagnetic ordering varied in supported films exposing different crystal faces.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
M. Jarvin, S. Ashok Kumar, G. Vinodhkumar, E. Manikandan, S. S. R. Inbanathan
Summary: The Hausmannite manganese oxide/reduced graphene oxide (Mn3O4-rGO) nanocomposite was synthesized using solvothermal method and characterized for its structural, morphological, and optical properties. The nanocomposite exhibited high photocatalytic activity in the degradation of methylene blue dye under sunlight, showing higher efficiency compared to pristine Mn3O4 and rGO materials.
Article
Chemistry, Multidisciplinary
Mira Ristic, Stjepko Krehula, Svetozar Music
CROATICA CHEMICA ACTA
(2018)
Article
Chemistry, Physical
S. Krehula, M. Ristic, C. Wu, X. Li, L. Jiang, J. Wang, G. Sun, T. Zhang, M. Perovic, M. Boskovic, B. Antic, L. Kratofil Krehula, B. Kobzi, S. Kubuki, S. Music
JOURNAL OF ALLOYS AND COMPOUNDS
(2018)
Article
Chemistry, Physical
Mira Ristic, Erno Kuzmann, Zoltan Homonnay, Svetozar Music
JOURNAL OF ALLOYS AND COMPOUNDS
(2018)
Article
Chemistry, Multidisciplinary
Attila Lengyel, Gyula Tolnai, Zoltan Klencsar, Vijayendra Kumar Garg, Aderbal Carlos de Oliveira, L. Herojit Singh, Zoltan Homonnay, Roland Szalay, Peter Nemeth, Balint Szabolcs, Mira Ristic, Svetozar Music, Erno Kuzmann
JOURNAL OF NANOPARTICLE RESEARCH
(2018)
Article
Materials Science, Multidisciplinary
Mira Ristic, Michael Reissner, Stjepko Krehula, Svetozar Music
Article
Chemistry, Physical
Mira Ristic, Ivana Mitar, Svetozar Music
COLLOID AND POLYMER SCIENCE
(2019)
Article
Chemistry, Physical
Stjepko Krehula, Mira Ristic, Zeljka Petrovic, Ljerka Kratofil Krehula, Ivana Mitar, Svetozar Music
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Chemistry, Multidisciplinary
Stjepko Krehula, Mira Ristic, Ivana Mitar, Chuchu Wu, Xuning Li, Luhua Jiang, Junhu Wang, Gongquan Sun, Tao Zhang, Marija Perovic, Marko Boskovic, Bratislav Antic, Svetozar Music
CROATICA CHEMICA ACTA
(2018)
Article
Chemistry, Multidisciplinary
Mira Ristic, Jasenka Stajdohar, Ivana Mitar, Svetozar Music
CROATICA CHEMICA ACTA
(2018)
Proceedings Paper
Physics, Atomic, Molecular & Chemical
A. Lengyel, Z. Homonnay, K. Kovacs, Z. Klencsar, Sz. Nemeth, R. Szalay, V. Kis, F. Fodor, A. Solti, M. Ristic, S. Music, E. Kuzmann
HYPERFINE INTERACTIONS
(2018)
Article
Chemistry, Physical
Xinlei Chen, Shiyi Chen, Xuele Lin, Jingxuan Zhou, Xingjun Gao, Yaoqi Zhen, Xiaodan Ma, Shouwen Jin, Linfang Shi, Hui Liu, Daqi Wang
Summary: Nine mixed-ligand Cd2+ complexes with different geometric structures were synthesized and characterized. The complexes exhibit various coordination modes and form both intra- and intermolecular hydrogen bonds.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Rupali Mahajan, Abhishek Sharma, Bhagyashree Patra, Lijo Mani, Parul Grover, Sandeep Kumar, Santosh Kumar Guru, Gananadhamu Samanthula, Amol G. Dikundwar, Amit Asthana
Summary: This research article provides a comprehensive characterization and toxicological assessment of a photoisomeric impurity of the antianemic drug Roxadustat. The impurity has a distinct structure compared to the drug and its formation due to light exposure is a concern. Through various experiments, including single crystal XRD, physicochemical characterization, and in vitro cytotoxicity assays, the researchers confirmed the structure of the impurity, evaluated its conversion with Roxadustat, and assessed its toxicological activity. These findings contribute to the understanding of drug stability, safety, and formulation development.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Laila S. Alqarni, Azzah M. Alghamdi, Nuha Y. Elamin, A. Rajeh
Summary: The solution casting method was used to produce a new type of nanocomposites made of chitosan, gelatin, and co-doped ZnO nanoparticles. The addition of 3.5% co-doped ZnO nanoparticles improved the physicochemical characteristics and antimicrobial effects of the nanocomposites, indicating their significant potential in food packaging and energy storage.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Ruchi Gaur
Summary: The structure and intermolecular interactions of a newly synthesized bis-chalcone THXA were studied using experimental and computational methods. The importance of non-covalent interactions such as pi center dot center dot center dot pi, C-H center dot center dot center dot S, and C-H center dot center dot center dot pi was revealed.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Andrii Bazylevich, Leonid Patsenker, Sarit Aviel-Ronen, Gary Gellerman
Summary: Drug combination therapy is commonly used for treating various skin disorders, but its effectiveness is often limited. In this study, researchers synthesized conjugates of anti-pigmenting drugs and hyaluronic acid (HA) to improve treatment efficacy. These HA-drug conjugates exhibited measurable drug release profiles and demonstrated superior depigmentation effects compared to control groups in a swine model.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Xiaodan Ma, Xinlei Chen, Yaoqi Zhen, Xunjie Zheng, Chengzhe Shi, Shouwen Jin, Bin Liu, Bin Chen, Daqi Wang
Summary: Cocrystallization experiments between minoxidil and aryl acids coformers resulted in the successful formation of multi-component samples. The nature of these samples was determined using various techniques and their structural and supramolecular aspects were investigated. The outcomes revealed the importance of nonbonding contacts and different types of interactions in stabilizing and expanding the crystal structures.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Najla A. Alshaye, Magdy A. Ibrahim, Al-Shimaa Badran
Summary: The chemical behavior of 3-substituted-6,8-dimethylchromones towards phenylhydrazine was examined. Different reaction conditions produced various products, and the molecular geometries and reactivity descriptors of the compounds were also investigated. The results suggest that these compounds are suitable for nonlinear optical applications.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Hayette Alliouche, Houria Bouria, Rafik Bensegueni, Mounia Guergouri, Abdelmalek Bouraiou, Ali Belfaitah
Summary: In this paper, a combined experimental and theoretical study was conducted to synthesize and characterize new 2-quinolone-piperidine and -morpholine hybrids. The results from experiments were validated using computational calculations, and the affinity between these compounds and Acetylcholinesterase/Butyrylcholinesterase was estimated through molecular docking.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Wei-Min Chen, Juan-Juan Shao, Yi Zhang, Zhen-Dong Xue, Peng-Lai Liu, Jian-Ling Ni, Li-Zhuang Chen, Qiang Gao, Fang-Ming Wang
Summary: This study synthesized and characterized a novel Mn-based LMOF, and achieved good results in detecting heavy metal Al3+ in water, showing good stability, high selectivity and sensitivity. This provides new insights into the potential applications of Mn-based MOFs in chemical sensing.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Jun-Xia Li, Yi-Jing Lu, Ke-Ying Quan, Li-Bing Wu, Xun Feng, Wei-Zhou Wang
Summary: This study synthesized two cobalt(II) complexes and analyzed their crystal structures using single-crystal X-ray diffraction. The results showed that the crystal structures of these complexes were different, and they exhibited different crystal packing and magnetic properties.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Yang Li, Yan Zhang, Hong Xu, Min Li, Zhen Li, Zi-yu Song, Ji-shi Chen, Yan-Jun Liu, Yong Sun, Zhao Yang
Summary: This study reports the synthesis and solid-state characterization of a new pharmaceutical cocrystal, PRO-BPE, which can enhance the solubility of the highly water-insoluble prodrug probenecid. The PRO-BPE cocrystals were found to have superior water solubility compared to pure PRO. This research provides valuable insights into improving the solubility of poorly soluble drugs.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Lucas G. B. Felicio, Bianca B. M. Vieira, Ivana S. Lula, Renata Diniz, Frank Alexis, Flavio B. Miguz, Frederico B. De Sousa
Summary: A novel spiropyran derivative was synthesized for heavy metals sensing in water. The results demonstrated that the new derivative can serve as a rapid, sensitive, and simple tool for detecting Hg2+ ions in water with high selectivity.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Junqing Meng, Jie Wang, Lijuan Wang, Chunhui Lyu, Haiyan Chen, Yingpei Lyu, Baisheng Nie
Summary: Material modification with low surface energy can achieve lower surface free energy on micro-and nano-rough structures, which is crucial for developing superhydrophobic surfaces. In this study, attapulgite (APT) was modified with alkylamine, alkylammonium salt, and stearic acid, and the interaction between low surface materials and attapulgite was explained. The results showed that the hydrophobicity of APT was significantly modified by the modifiers, and the surface free energy of the composites first decreased and then increased with increasing molecular number of low surface energy monomers.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Karan Goswami, Dipak Das, Parthasarathi Bera, Sounak Roy, Md. Motin Seikh, Prasanta Kumar Sinha, Arup Gayen
Summary: This work presents the development of a simple and highly active heterogeneous Pd catalyst for Suzuki-Miyaura carbon-carbon cross-coupling reaction. The NiPdFe-1 catalyst shows the best activity and stability among the prepared catalysts. It efficiently promotes the coupling reaction between aryl bromide and phenyl boronic acid under mild reaction conditions with high isolated yields.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Ekta Pardhi, Devendra Singh Tomar, Rahul Khemchandani, Gananadhamu Samanthula, Pankaj Kumar Singh, Neelesh Kumar Mehra
Summary: The main aim of this study was to prepare a drug-drug coamorphous system to improve the physiochemical properties, solubility and stability of Apremilast and Indomethacin. Various solid-state characterization techniques were used to characterize the prepared system. Molecular level interactions were studied using molecular modeling and ATR-FTIR and 1H NMR. Solubility and dissolution studies showed the benefits of the coamorphous system. The system was found to be stable for a period of five months. Permeation study also demonstrated improved flux for both drugs compared to their crystalline forms. The coamorphous system showed anti-psoriatic and anti-melanogenic activity based on molecular docking results. Overall, the developed CAM-based supersaturated system exhibited improved physicochemical properties and physical stability.
JOURNAL OF MOLECULAR STRUCTURE
(2024)