1
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Sannino GV, Pecoraro A, Veneri PD, Pavone M, Muñoz-García AB. Effective prediction of SnO 2 conduction band edge potential: The key role of surface oxygen vacancies. J Comput Chem 2024; 45:2198-2203. [PMID: 38795374 DOI: 10.1002/jcc.27434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 04/19/2024] [Accepted: 04/24/2024] [Indexed: 05/27/2024]
Abstract
Several theoretical studies at different levels of theory have attempted to calculate the absolute position of the SnO2 conduction band, whose knowledge is key for its effective application in optoelectronic devices such us, for example, perovskite solar cells. However, the predicted band edges fall outside the experimentally measured range. In this work, we introduce a computational scheme designed to calculate the conduction band minimum values of SnO2, yielding results aligned with experiments. Our analysis points out the fundamental role of encompassing surface oxygen vacancies to properly describe the electronic profile of this material. We explore the impact of both bridge and in-plane oxygen vacancy defects on the structural and electronic properties of SnO2, explaining from an atomistic perspective the experimental observables. The results underscore the importance of simulating both types of defects to accurately predict SnO2 features and provide new fundamental insights that can guide future studies concerning design and optimization of SnO2-based materials and functional interfaces.
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Affiliation(s)
| | - Adriana Pecoraro
- Department of Physics "E. Pancini", University of Naples Federico II, Naples, Italy
| | - Paola Delli Veneri
- Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici, Italy
| | - Michele Pavone
- Department of Chemical Sciences, University of Naples Federico II, Naples, Italy
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2
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Rydel-Ciszek K, Sobkowiak A. The [(Bn-tpen)Fe II] 2+ Complex as a Catalyst for the Oxidation of Cyclohexene and Limonene with Dioxygen. Molecules 2024; 29:3755. [PMID: 39202835 PMCID: PMC11357577 DOI: 10.3390/molecules29163755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Revised: 08/05/2024] [Accepted: 08/06/2024] [Indexed: 09/03/2024] Open
Abstract
[(Bn-tpen)FeII(MeCN)](ClO4)2, containing the pentadentate Bn-tpen-N-benzyl-N,N',N'-tris(2-pyridylmethyl)-1,2-diaminoethane ligand, was studied in the oxygenation of cyclohexene and limonene using low-pressure dioxygen (0.2 atm air or 1 atm pure O2) in acetonitrile. 2-Cyclohexen-1-one and 2-cyclohexen-1-ol are the main products of cyclohexene oxidations, with cyclohexene oxide as a minor product. Limonene is oxidized to limonene oxide, carvone, and carveol. Other oxidation products such as perillaldehyde and perillyl alcohol are found in trace amounts. This catalyst is slightly less active than the previously reported [(N4Py)FeII(MeCN)](ClO4)2 (N4Py-N,N-bis(2-pyridylmethyl)-N-(bis-2-pyridylmethyl)amine). Based on cyclic voltammetry experiments, it is postulated that [(Bn-tpen)FeIV=O]2+ is the active species. The induction period of approx. 3 h during cyclohexene oxygenation is probably caused by deactivation of the reactive Fe(IV)=O species by the parent Fe(II) complex. Equimolar mixtures of Fe(II) salt and the ligand (in situ-formed catalyst) gave catalytic performance similar to that of the synthesized catalyst.
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Affiliation(s)
- Katarzyna Rydel-Ciszek
- Department of Physical Chemistry, Faculty of Chemistry, Rzeszów University of Technology, Al. Powstańców Warszawy 6, 35-959 Rzeszów, Poland
| | - Andrzej Sobkowiak
- Department of Physical Chemistry, Faculty of Chemistry, Rzeszów University of Technology, Al. Powstańców Warszawy 6, 35-959 Rzeszów, Poland
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3
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Devu C, Sreelakshmi S, Chandana R, Sivanand P, Santhy A, Lakshmi KCS, Rejithamol R. Recent progress in tannin and lignin blended metal oxides and metal sulfides as smart materials for electrochemical sensor applications. ANAL SCI 2024; 40:981-996. [PMID: 38517582 DOI: 10.1007/s44211-024-00544-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 02/24/2024] [Indexed: 03/24/2024]
Abstract
Our technologically advanced civilization has made sensors an essential component. They have potential uses in the pharmaceutical sector, clinical analysis, food quality control, environmental monitoring, and other areas. One of the most active fields of analytical chemistry research is the fabrication of electrochemical sensors. An intriguing area of electroanalytical chemistry is the modification of electrodes using polymeric films. Due to their benefits, which include high adhesion to the electrode surface, chemical stability of the coating, superior selectivity, sensitivity, and homogeneity in electrochemical deposition, polymer-modified electrodes have attracted a great deal of interest in the electroanalytical sector. Conducting polymers are an important material for sensing devices because of their fascinating features, which include high mechanical flexibility, electrical conductivity, and the capacity to be electrochemically converted between electronically insulating and conducting states. Tannin or lignin nanomaterials can be an inter-linker leading to flexible and functional polymeric networks. There is a continuing demand for fast and simple analytical methods for the determination of many clinically important biomarkers, food additives, environmental pollutants etc. This review in a comprehensive way summarizes and discusses the various metal oxide and sulfide-incorporated tannin and lignin scaffolds using electrochemical sensing and biosensing.
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Affiliation(s)
- C Devu
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam, 690525, India
| | - S Sreelakshmi
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam, 690525, India
| | - R Chandana
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam, 690525, India
| | - P Sivanand
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam, 690525, India
| | - A Santhy
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam, 690525, India
| | - K C Seetha Lakshmi
- Graduate School of Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba-shi, 2638522, Japan
| | - R Rejithamol
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam, 690525, India.
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4
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de Souza Caldas L, Prieto MJ, Tănase LC, Tiwari A, Schmidt T, Roldan Cuenya B. Correlative In Situ Spectro-Microscopy of Supported Single CuO Nanoparticles: Unveiling the Relationships between Morphology and Chemical State during Thermal Reduction. ACS NANO 2024; 18:13714-13725. [PMID: 38741386 PMCID: PMC11140838 DOI: 10.1021/acsnano.4c01460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/17/2024] [Accepted: 04/29/2024] [Indexed: 05/16/2024]
Abstract
The activity, selectivity, and lifetime of nanocatalysts critically depend on parameters such as their morphology, support, chemical composition, and oxidation state. Thus, correlating these parameters with their final catalytic properties is essential. However, heterogeneity across nanoparticles (NPs) is generally expected. Moreover, their nature can also change during catalytic reactions. Therefore, investigating these catalysts in situ at the single-particle level provides insights into how these tunable parameters affect their efficiency. To unravel this question, we applied spectro-microscopy to investigate the thermal reduction of SiO2-supported copper oxide NPs in ultrahigh vacuum. Copper was selected since its oxidation state and morphological transformations strongly impact the product selectivity of many catalytic reactions. Here, the evolution of the NPs' chemical state was monitored in situ during annealing and correlated with their morphology in situ. A reaction front was observed during the reduction of CuO to Cu2O. From the temperature dependence of this front, the activation energy was extracted. Two parameters were found to strongly influence the NP reduction: the initial nanoparticle size and the chemical state of the SiO2. substrate. The CuOx reduction was found to be completed first on smaller NPs and was also favored over partially reduced SiOx regions that resulted from X-ray beam irradiation. This methodology with single-particle level spectro-microscopy resolution provides a way of isolating the influence of diverse morphologic, electronic, and chemical influences on a chemical reaction. The knowledge gained is crucial for the future design of more complex multimetallic catalytic systems.
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Affiliation(s)
- Lucas de Souza Caldas
- Department of Interface Science, Fritz-Haber Institute of the Max-Planck Society, Berlin 14195, Germany
| | - Mauricio J. Prieto
- Department of Interface Science, Fritz-Haber Institute of the Max-Planck Society, Berlin 14195, Germany
| | - Liviu C. Tănase
- Department of Interface Science, Fritz-Haber Institute of the Max-Planck Society, Berlin 14195, Germany
| | - Aarti Tiwari
- Department of Interface Science, Fritz-Haber Institute of the Max-Planck Society, Berlin 14195, Germany
| | - Thomas Schmidt
- Department of Interface Science, Fritz-Haber Institute of the Max-Planck Society, Berlin 14195, Germany
| | - Beatriz Roldan Cuenya
- Department of Interface Science, Fritz-Haber Institute of the Max-Planck Society, Berlin 14195, Germany
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5
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Amit E, Mondal R, Berg I, Nairoukh Z, Gross E. N-Heterocyclic Carbene Monolayers on Metal-Oxide Films: Correlations between Adsorption Mode and Surface Functionality. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:10374-10383. [PMID: 38701356 PMCID: PMC11100006 DOI: 10.1021/acs.langmuir.4c01109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/15/2024] [Accepted: 04/19/2024] [Indexed: 05/05/2024]
Abstract
N-Heterocyclic carbene (NHC) ligands have been self-assembled on various metal and semimetal surfaces, creating a covalent bond with surface metal atoms that led to high thermal and chemical stability of the self-assembled monolayer. This study explores the self-assembly of NHCs on metal-oxide films (CuOx, FeOx, and TiOx) and reveals that the properties of these metal-oxide substrates play a pivotal role in dictating the adsorption behavior of NHCs, influencing the decomposition route of the monolayer and its impact on work function values. While the attachment of NHCs onto CuOx is via coordination with surface oxygen atoms, NHCs interact with TiOx through coordination with surface metal atoms and with FeOx via coordination with both metal and oxygen surface atoms. These distinct binding modes arise due to variances in the electronic properties of the metal atoms within the investigated metal-oxide films. Contact angle and ultraviolet photoelectron spectroscopy measurements have shown a significantly higher impact of F-NHC adsorption on CuOx than on TiOx and FeOx , correlated to a preferred, averaged upright orientation of F-NHC on CuOx.
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Affiliation(s)
- Einav Amit
- Institute
of Chemistry, The Hebrew University, Jerusalem 91904, Israel
- The
Center for Nanoscience and Nanotechnology, The Hebrew University, Jerusalem 91904, Israel
| | - Rajarshi Mondal
- Institute
of Chemistry, The Hebrew University, Jerusalem 91904, Israel
| | - Iris Berg
- Institute
of Chemistry, The Hebrew University, Jerusalem 91904, Israel
- The
Center for Nanoscience and Nanotechnology, The Hebrew University, Jerusalem 91904, Israel
| | - Zackaria Nairoukh
- Institute
of Chemistry, The Hebrew University, Jerusalem 91904, Israel
| | - Elad Gross
- Institute
of Chemistry, The Hebrew University, Jerusalem 91904, Israel
- The
Center for Nanoscience and Nanotechnology, The Hebrew University, Jerusalem 91904, Israel
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6
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Cleary SR, Starace AK, Curran-Velasco CC, Ruddy DA, McGuirk CM. The Overlooked Potential of Sulfated Zirconia: Reexamining Solid Superacidity Toward the Controlled Depolymerization of Polyolefins. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:6612-6653. [PMID: 38509763 DOI: 10.1021/acs.langmuir.3c03966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Closed-loop recycling via an efficient chemical process can help alleviate the global plastic waste crisis. However, conventional depolymerization methods for polyolefins, which compose more than 50% of plastics, demand high temperatures and pressures, employ precious noble metals, and/or yield complex mixtures of products limited to single-use fuels or oils. Superacidic forms of sulfated zirconia (SZrO) with Hammet Acidity Functions (H0) ≤ - 12 (i.e., stronger than 100% H2SO4) are industrially deployed heterogeneous catalysts capable of activating hydrocarbons under mild conditions and are shown to decompose polyolefins at temperatures near 200 °C and ambient pressure. Additionally, confinement of active sites in porous supports is known to radically increase selectivity, coking and sintering resistance, and acid site activity, presenting a possible approach to low-energy polyolefin depolymerization. However, a critical examination of the literature on SZrO led us to a surprising conclusion: despite 40 years of catalytic study, engineering, and industrial use, the surface chemistry of SZrO is poorly understood. Ostensibly spurred by SZrO's impressive catalytic activity, the application-driven study of SZrO has resulted in deleterious ambiguity in requisite synthetic conditions for superacidity and insufficient characterization of acidity, porosity, and active site structure. This ambiguity has produced significant knowledge gaps surrounding the synthesis, structure, and mechanisms of hydrocarbon activation for optimized SZrO, stunting the potential of this catalyst in olefin cracking and other industrially relevant reactions, such as isomerization, esterification, and alkylation. Toward mitigating these long extant issues, we herein identify and highlight these current shortcomings and knowledge gaps, propose explicit guidelines for characterization of and reporting on characterization of solid acidity, and discuss the potential of pore-confined superacids in the efficient and selective depolymerization of polyolefins.
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Affiliation(s)
- Scott R Cleary
- Department of Chemistry, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Anne K Starace
- National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Caleb C Curran-Velasco
- Department of Chemistry, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Daniel A Ruddy
- National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - C Michael McGuirk
- Department of Chemistry, Colorado School of Mines, Golden, Colorado 80401, United States
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7
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Khan MSJ, Mohd Sidek L, Kamal T, Khan SB, Basri H, Zawawi MH, Ahmed AN. Catalytic innovations: Improving wastewater treatment and hydrogen generation technologies. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 354:120228. [PMID: 38377746 DOI: 10.1016/j.jenvman.2024.120228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/19/2024] [Accepted: 01/24/2024] [Indexed: 02/22/2024]
Abstract
The effective reduction of hazardous organic pollutants in wastewater is a pressing global concern, necessitating the development of advanced treatment technologies. Pollutants such as nitrophenols and dyes, which pose significant risks to both human and aquatic health, making their reduction particularly crucial. Despite the existence of various methods to eliminate these pollutants, they are not without limitations. The utilization of nanomaterials as catalysts for chemical reduction exhibits a promising alternative owing to their distinguished catalytic activity and substantial surface area. For catalytically reducing the pollutants NaBH4 has been utilized as a useful source for it because it reduces the pollutants quiet efficiently and it also releases hydrogen gas as well which can be used as a source of energy. This paper provides a comprehensive review of recent research on different types of nanomaterials that function as catalysts to reduce organic pollutants and also generating hydrogen from NaBH4 methanolysis while also evaluating the positive and negative aspects of nanocatalyst. Additionally, this paper examines the features effecting the process and the mechanism of catalysis. The comparison of different catalysts is based on size of catalyst, reaction time, rate of reaction, hydrogen generation rate, activation energy, and durability. The information obtained from this paper can be used to steer the development of new catalysts for reducing organic pollutants and generation hydrogen by NaBH4 methanolysis.
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Affiliation(s)
| | - Lariyah Mohd Sidek
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia; Department of Civil Engineering, College of Engineering, Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia
| | - Tahseen Kamal
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia
| | - Sher Bahadar Khan
- Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia
| | - Hidayah Basri
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia; Department of Civil Engineering, College of Engineering, Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia
| | - Mohd Hafiz Zawawi
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia; Department of Civil Engineering, College of Engineering, Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia
| | - Ali Najah Ahmed
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia; School of Engineering and Technology, Sunway University, Bandar Sunway, Petaling Jaya, 47500, Malaysia.
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8
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Zuo Z, Sha Y, Wang P, Da Z. From bench to industry, the application of all-inorganic solid base materials in traditional heterogeneous catalysis: a mini review. RSC Adv 2024; 14:7468-7489. [PMID: 38440274 PMCID: PMC10910241 DOI: 10.1039/d4ra00335g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 02/15/2024] [Indexed: 03/06/2024] Open
Abstract
Acids and bases generally occur in pairs as concepts, and a large number of catalytic reactions can be considered as interactions between acids and bases. Many chemical reactions are a combination of acid-catalyzed processes and base-catalyzed processes, and thus it is particularly important to study and explain the mechanisms of acid-base synergy or acid-base interactions. However, compared to the in-depth research on acid catalysts, there is a lack of research on solid bases. In addition to the application of basic materials to non-petroleum processes, recent studies have also applied basic materials to the catalytic cracking reaction process of heavy oils, providing new ideas for the processing of heavy oils. The formation of carbanions with the contribution of basicity is a critical stage in many fine chemical reactions, as well as in the hydrocarbon cracking reactions promoted by a base. Thus, herein, we summarize the research progress on the main types of all-inorganic solid base catalysts, including the types of catalysts used in non-petroleum processes and petroleum processes, their preparation, the properties of their basic sites, and their structure-performance correlation in the reactions. Also, we provide an outlook on the future research directions of all-inorganic solid base materials.
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Affiliation(s)
- Zhixuan Zuo
- Sinopec Research Institute of Petroleum Processing CO.,Ltd No. 18 Xueyuan Road, Haidian District Beijing 100083 P.R. China +86-10-82368650
| | - Yuchen Sha
- Sinopec Research Institute of Petroleum Processing CO.,Ltd No. 18 Xueyuan Road, Haidian District Beijing 100083 P.R. China +86-10-82368650
| | - Peng Wang
- Sinopec Research Institute of Petroleum Processing CO.,Ltd No. 18 Xueyuan Road, Haidian District Beijing 100083 P.R. China +86-10-82368650
| | - Zhijian Da
- Sinopec Research Institute of Petroleum Processing CO.,Ltd No. 18 Xueyuan Road, Haidian District Beijing 100083 P.R. China +86-10-82368650
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9
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Si R, Xu Y, Shen C, Jiang H, Lei M, Guo X, Xie S, Gao S, Zhang S. High-Selectivity Laminated Gas Sensor Based on Characteristic Peak under Temperature Modulation. ACS Sens 2024; 9:674-688. [PMID: 38254338 DOI: 10.1021/acssensors.3c01831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Aiming at the bottleneck problem of insufficient selectivity of metal oxide gas sensors, a reliable scheme to improve selectivity is proposed, that is, a laminated sensor structure of a gas-sensitive membrane plus catalytic membrane combined with the temperature modulation technology. It is presented as a highly selective ethanol sensor as an example for verification. The laminated gas sensor is made of Sr@SnO2 as the gas-sensing membrane and ZSM-5 as the catalytic membrane by the microelectro mechanical system. The results indicate that in temperature modulation mode, the Sr@SnO2/ZSM-5-laminated sensor has good resistance gas-sensing response to most different types of gases but only shows a characteristic peak on the time-resistance and temperature-resistance curves of ethanol gas response. By defining and calculating this characteristic peak, the selectivity of ethanol gas response signal is improved. The Sr@SnO2/ZSM-5 sensor also exhibits high sensitivity to ethanol gas at the parts per billion level, fast response/recovery time in seconds, excellent anti-interference, and stability, indicating the reliability and practicality of this highly selective scheme. This scheme is of great significance for the study of high selectivity of a metal oxide gas sensor and promotes its wide application.
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Affiliation(s)
- Renjun Si
- State Key Laboratory of Material Processing and Die &Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Yong Xu
- Anti Chemical Institute of the Chinese People's Liberation Army, Beijing 102205, PR China
| | - Chenxi Shen
- State Key Laboratory of Material Processing and Die &Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Hongze Jiang
- State Key Laboratory of Material Processing and Die &Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Ming Lei
- State Key Laboratory of Material Processing and Die &Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Xin Guo
- State Key Laboratory of Material Processing and Die &Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Suijiang Xie
- China Ordnance Equipment Group Automation Institute Co., Ltd., Mianyang, Sichuan 621000, PR China
| | - Shi Gao
- Anti Chemical Institute of the Chinese People's Liberation Army, Beijing 102205, PR China
| | - Shunping Zhang
- State Key Laboratory of Material Processing and Die &Mould Technology, Department of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
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10
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Li H, Hu Z, Zuo F, Li Y, Liu M, Liu H, Li Y, Li Q, Ding Y, Wang Y, Zhu Y, Yu G, Maier J. Real-time tracking of electron transfer at catalytically active interfaces in lithium-ion batteries. Proc Natl Acad Sci U S A 2024; 121:e2320030121. [PMID: 38315861 PMCID: PMC10873553 DOI: 10.1073/pnas.2320030121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 01/09/2024] [Indexed: 02/07/2024] Open
Abstract
Transition metals and related compounds are known to exhibit high catalytic activities in various electrochemical reactions thanks to their intriguing electronic structures. What is lesser known is their unique role in storing and transferring electrons in battery electrodes which undergo additional solid-state conversion reactions and exhibit substantially large extra capacities. Here, a full dynamic picture depicting the generation and evolution of electrochemical interfaces in the presence of metallic nanoparticles is revealed in a model CoCO3/Li battery via an in situ magnetometry technique. Beyond the conventional reduction to a Li2CO3/Co mixture under battery operation, further decomposition of Li2CO3 is realized by releasing interfacially stored electrons from its adjacent Co nanoparticles, whose subtle variation in the electronic structure during this charge transfer process has been monitored in real time. The findings in this work may not only inspire future development of advanced electrode materials for next-generation energy storage devices but also open up opportunities in achieving in situ monitoring of important electrocatalytic processes in many energy conversion and storage systems.
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Affiliation(s)
- Hongsen Li
- College of Physics, Qingdao University, Qingdao266071, China
| | - Zhengqiang Hu
- College of Physics, Qingdao University, Qingdao266071, China
| | - Fengkai Zuo
- College of Physics, Qingdao University, Qingdao266071, China
| | - Yuhao Li
- College of Physics, Qingdao University, Qingdao266071, China
| | - Minhui Liu
- College of Physics, Qingdao University, Qingdao266071, China
| | - Hengjun Liu
- College of Physics, Qingdao University, Qingdao266071, China
| | - Yadong Li
- College of Physics, Qingdao University, Qingdao266071, China
| | - Qiang Li
- College of Physics, Qingdao University, Qingdao266071, China
| | - Yu Ding
- Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX78712
- Center of Energy Storage Materials and Technology, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing210093, China
| | - Yaqun Wang
- College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao266590, China
| | - Yue Zhu
- Max Planck Institute for Solid State Research, Stuttgart70569, Germany
| | - Guihua Yu
- Materials Science and Engineering Program and Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX78712
| | - Joachim Maier
- Max Planck Institute for Solid State Research, Stuttgart70569, Germany
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11
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Oubraham A, Iordache M, Marin E, Sisu C, Borta S, Soare A, Capris C, Marinoiu A. Preparation of Copper-Based Catalysts for Obtaining Methanol by the Chemical Impregnation Method. MATERIALS (BASEL, SWITZERLAND) 2024; 17:847. [PMID: 38399098 PMCID: PMC10890475 DOI: 10.3390/ma17040847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 02/06/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024]
Abstract
This paper presents the preparation of heterogeneous catalysts for the direct hydrogenation process of CO2 to methanol. The development of the modern chemical industry is inextricably linked to the use of catalytic processes. As a result, currently over 80% of new technologies introduced in the chemical industry incorporate catalytic processes. Since the basic factor of catalytic processes is the catalysts, the studies for the deepening of the knowledge regarding the nature of the action of the catalysts, for the development of new catalysts and catalytic systems, as well as for their improvement, represent a research priority of a fundamental or applied nature. The Cu/ZnO/Al2O3 catalyst for the synthesis of green methanol, using precursors of an inorganic (copper nitrate, denoted by Cu/ZnO/Al2O3-1) and organic (copper acetate, denoted by Cu/ZnO/Al2O3-2) nature, are obtained by chemical impregnation that includes two stages: preparation and one of calcination. The preparation methods and conditions, as well as the physico-chemical properties of the catalyst precursor, play a major role in the behavior of the catalysts. The prepared catalysts were characterized using atomic adsorption analysis, scanning electron microscopy (SEM) with energy dispersive X-ray (EDX) analysis, specific surface area and pore size analyses, adsorption, and the chemisorption of vapor (BET).
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Affiliation(s)
| | - Mihaela Iordache
- National Institute for Cryogenics and Isotopic Technologies—ICSI Ramnicu Valcea, Uzinei Str. No. 4, 240050 Ramnicu Valcea, Romania; (A.O.); (E.M.); (C.S.); (S.B.); (A.S.); (C.C.); (A.M.)
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12
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Behera M, Alqahtani FO, Chakrabortty S, Nayak J, Banerjee S, Kumar R, Jeon BH, Tripathy SK. CuO/TiO 2/ZnO NPs Anchored Hydrogen Exfoliated Graphene: To Comprehend the Role of Graphene in Catalytic Reduction of p-Nitrophenol. ACS OMEGA 2023; 8:42164-42176. [PMID: 38024706 PMCID: PMC10652271 DOI: 10.1021/acsomega.3c03859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 09/15/2023] [Accepted: 09/27/2023] [Indexed: 12/01/2023]
Abstract
The present study deals with sonochemically in situ synthesis of a novel functional catalyst using hydrogen exfoliated graphene (HEG) supported titanium dioxide (TiO2) and copper sulfate (CuSO4) doped with zinc oxide (ZnO) (abbreviated as Ti/Cu/Zn-HEG). The synthesis of the Ti/Cu/Zn-HEG nanocomposite (NCs) catalyst was confirmed through its characterizations by XRD, SEM-EDX, TEM, XPS, FTIR, and BET methods. It was assessed for catalytic conversion of a model aromatic compound para-nitrophenol (p-NP) in an aqueous solution. The p-NP is a nitroaromatic compound that has a toxic and mutagenic effect. Its removal from the water system is necessary to protect the environment and living being. The newly synthesized Ti/Cu/Zn-HEG NCs were applied for their higher stability and catalytic activity as a potential candidate for reducing p-NP in practice. The operating parameters, such as p-NP concentration, catalyst dosage, and operating time were optimized for 150 ppm, 400 ppm, and 10 min through response surface methodology (RSM) in Design-Expert software to obtain the maximum reduction p-NP up to 98.4% at its normal pH of 7.1 against the controls (using HEG, Ti/Cu-HEG, and Zn-HEG). Analysis of variance of the response suggested the regression equation to be significant for the process with a major impact on catalyst concentration and operating time. The model prediction data (from RSM) and experimental data were corroborated well as reflected through model's low relative error (RE < 0.10), high regression coefficient (R2 > 0.97), and Willmott d-index (dwill-index > 0.95) values.
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Affiliation(s)
- Meerambika Behera
- School
of Chemical Technology, Kalinga Institute
of Industrial Technology, Bhubaneswar, Odisha 751024, India
| | - Fatimah Othman Alqahtani
- Department
of Chemistry, College of Science, King Faisal
University, P.O. Box 380, Al-Ahsa 31982, Saudi Arabia
| | - Sankha Chakrabortty
- School
of Chemical Technology, Kalinga Institute
of Industrial Technology, Bhubaneswar, Odisha 751024, India
| | - Jayato Nayak
- Centre
for Life Science, Mahindra University, Bahadurpally, Jeedimetla, Hyderabad, Telangana 500043, India
| | - Shirsendu Banerjee
- School
of Chemical Technology, Kalinga Institute
of Industrial Technology, Bhubaneswar, Odisha 751024, India
| | - Ramesh Kumar
- Department
of Earth Resources & Environmental Engineering, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic
of Korea
| | - Byong-Hun Jeon
- Department
of Earth Resources & Environmental Engineering, Hanyang University, 222-Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic
of Korea
| | - Suraj K Tripathy
- School
of Chemical Technology, Kalinga Institute
of Industrial Technology, Bhubaneswar, Odisha 751024, India
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13
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Akhtar K, Alhaj AA, Bakhsh EM, Khan SB, Fagieh TM. SnAg 2O 3-Coated Adhesive Tape as a Recyclable Catalyst for Efficient Reduction of Methyl Orange. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6978. [PMID: 37959575 PMCID: PMC10648674 DOI: 10.3390/ma16216978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 11/15/2023]
Abstract
Silver oxide-doped tin oxide (SnAg2O3) nanoparticles were synthesized and different spectroscopic techniques were used to structurally identify SnAg2O3 nanoparticles. The reduction of 4-nitrophenol (4-NP), congo red (CR), methylene blue (MB), and methyl orange (MO) was studied using SnAg2O3 as a catalyst. Only 1.0 min was required to reduce 95% MO; thus, SnAg2O3 was found to be effective with a rate constant of 3.0412 min-1. Being a powder, SnAg2O3 is difficult to recover and recycle multiple times. For this reason, SnAg2O3 was coated on adhesive tape (AT) to make it recyclable for large-scale usage. SnAg2O3@AT catalyst was assessed toward MO reduction under various conditions. The amount of SnAg2O3@AT, NaBH4, and MO was optimized for best possible reduction conditions. The catalyst had a positive effect since it speed up the reduction of MO by adding more SnAg2O3@AT and NaBH4 as well as lowering the MO concentration. SnAg2O3@AT totally reduced MO (98%) in 3.0 min with a rate constant of 1.3669 min-1. These findings confirmed that SnAg2O3@AT is an effective and useful catalyst for MO reduction that can even be utilized on a large scale for industrial purposes.
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Affiliation(s)
- Kalsoom Akhtar
- Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (A.A.A.); (E.M.B.); (S.B.K.); (T.M.F.)
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14
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Bibak S, Poursattar Marjani A. Magnetically retrievable nanocatalyst Fe 3O 4@CPTMO@dithizone-Ni for the fabrication of 4H-benzo[h]chromenes under green medium. Sci Rep 2023; 13:17894. [PMID: 37857651 PMCID: PMC10587171 DOI: 10.1038/s41598-023-44881-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/12/2023] [Indexed: 10/21/2023] Open
Abstract
In the research, the core-shell procedure synthesized a novel magnetically separable heterogeneous nanocatalyst with high stability named Fe3O4@CPTMO@dithizone-Ni. In this method, Fe3O4 was modified as a magnetic core using surfactant (SDS) and polyethylene glycol (PEG) coating; after functionalizing the magnetic nanoparticles with 3-chloropropyl-tri-methoxysilane and dithizone, Ni metal was immobilized. The prepared catalyst was identified and specified utilizing diverse physicochemical techniques involving FT-IR, XRD, SEM, EMA, BET, ICP, EDS, TGA, Raman, and TEM. In the following, to vouch for the efficiency of the obtaining catalyst for the green synthesis of 4H-benzo[h]chromenes utilizing the three-component, one-pot condensation reaction of α-naphthol, aryl glyoxal, and malononitrile as precursors were evaluated. The catalyst exhibited high recyclability with a slight reduction in activity at least eight series without a substantial decrease in stability and efficiency. The synthesized nanocatalyst was evaluated in various conditions such as different solvents, etc. the best of these conditions is the initial concentration of 30 mg of nanocatalyst with water as a solvent in 3 min with 98% yield. The prominent merits of the present research include easy separation of the catalyst without centrifugation, high-accessible raw precursors, cost-effectiveness, environmental friendliness, green reaction status, quick reaction, and excellent product yields.
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Affiliation(s)
- Sepideh Bibak
- Department of Organic Chemistry, Faculty of Chemistry, Urmia University, Urmia, Iran
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15
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Obeso JL, Flores JG, Flores CV, Huxley MT, de Los Reyes JA, Peralta RA, Ibarra IA, Leyva C. MOF-based catalysts: insights into the chemical transformation of greenhouse and toxic gases. Chem Commun (Camb) 2023; 59:10226-10242. [PMID: 37554029 DOI: 10.1039/d3cc03148a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
Metal-organic framework (MOF)-based catalysts are outstanding alternative materials for the chemical transformation of greenhouse and toxic gases into high-add-value products. MOF catalysts exhibit remarkable properties to host different active sites. The combination of catalytic properties of MOFs is mentioned in order to understand their application. Furthermore, the main catalytic reactions, which involve the chemical transformation of CH4, CO2, NOx, fluorinated gases, O3, CO, VOCs, and H2S, are highlighted. The main active centers and reaction conditions for these reactions are presented and discussed to understand the reaction mechanisms. Interestingly, implementing MOF materials as catalysts for toxic gas-phase reactions is a great opportunity to provide new alternatives to enhance the air quality of our planet.
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Affiliation(s)
- Juan L Obeso
- Instituto Politécnico Nacional, CICATA U. Legaria, Laboratorio Nacional de Ciencia, Tecnología y Gestión Integrada del Agua (LNAgua), Legaria 694, Col. Irrigación, Miguel Hidalgo, 11500, CDMX, Mexico.
- Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior s/n, CU, Coyoacán, 04510, Ciudad de México, Mexico.
| | - J Gabriel Flores
- Departamento de Ingeniería de Procesos e Hidráulica, División de Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana-Iztapalapa, 09340, Ciudad de México, Mexico
| | - Catalina V Flores
- Instituto Politécnico Nacional, CICATA U. Legaria, Laboratorio Nacional de Ciencia, Tecnología y Gestión Integrada del Agua (LNAgua), Legaria 694, Col. Irrigación, Miguel Hidalgo, 11500, CDMX, Mexico.
- Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior s/n, CU, Coyoacán, 04510, Ciudad de México, Mexico.
| | - Michael T Huxley
- School of Physics, Chemistry and Earth Sciences, Faculty of Sciences, Engineering and Technology, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - José Antonio de Los Reyes
- Departamento de Ingeniería de Procesos e Hidráulica, División de Ciencias Básicas e Ingeniería, Universidad Autónoma Metropolitana-Iztapalapa, 09340, Ciudad de México, Mexico
| | - Ricardo A Peralta
- Departamento de Química, División de Ciencias Básicas e Ingeniería. Universidad Autónoma Metropolitana (UAM-I), 09340, Mexico.
| | - Ilich A Ibarra
- Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior s/n, CU, Coyoacán, 04510, Ciudad de México, Mexico.
| | - Carolina Leyva
- Instituto Politécnico Nacional, CICATA U. Legaria, Laboratorio Nacional de Ciencia, Tecnología y Gestión Integrada del Agua (LNAgua), Legaria 694, Col. Irrigación, Miguel Hidalgo, 11500, CDMX, Mexico.
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16
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Chandrabose V, Kim T, Park JW, Jung SY, Oh JM. Effect of Tetrahedrally Coordinated Al on the Surface Acidity of Mg-Al Binary Mixed Oxides. Molecules 2023; 28:6072. [PMID: 37630324 PMCID: PMC10459910 DOI: 10.3390/molecules28166072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/08/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
Metal oxides (MOs) having Mg and Al with Mg/Al ratios of 1, 2, 3, and 4 were synthesized via calcination of the layered double hydroxides (LDH). The X-ray diffraction analysis revealed that all the MO consisted of periclase (MgO) crystallite with comparable crystallinity regardless of the metal ratio. According to the 27Al magic-angle spinning nuclear magnetic resonance, the phase transformation from LDH to MO upon calcination facilitated the evolution of the Al3+ ions with unsaturated coordination at the surface of MO. The specific surface area values of MOs were not significantly different from each other, ranging between 100 and 200 m2/g, suggesting that the metal ratio did not strongly influence the porous structure of MO. The temperature-dependent desorption of ammonia demonstrated that the Lewis acidity of the Al-rich MOs was the largest with an Mg/Al ratio of 1, attributed to the efficient exposure of the surface-active site Al3+-O2- pairs. The acidity of heterogenous Al-rich MOs significantly increased with the exposed tetrahedral Al site on the surface and dramatically diminished when the molar ratio (Mg/Al) was over two.
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Affiliation(s)
- Vidya Chandrabose
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (V.C.); (T.K.); (J.w.P.); (S.-Y.J.)
| | - Taeho Kim
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (V.C.); (T.K.); (J.w.P.); (S.-Y.J.)
| | - Ji won Park
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (V.C.); (T.K.); (J.w.P.); (S.-Y.J.)
- Developing Product Quality Innovation Team, LG Display, Paju 10845, Republic of Korea
| | - Sang-Yong Jung
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (V.C.); (T.K.); (J.w.P.); (S.-Y.J.)
- SN Bioscience, 422-Na, LH Business Growth Center, 54 Changeop-ro, Sujeong-gu, Seongnam-si 13449, Republic of Korea
| | - Jae-Min Oh
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (V.C.); (T.K.); (J.w.P.); (S.-Y.J.)
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17
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Naeem M, Imran M, Latif S, Ashraf A, Hussain N, Boczkaj G, Smułek W, Jesionowski T, Bilal M. Multifunctional catalyst-assisted sustainable reformation of lignocellulosic biomass into environmentally friendly biofuel and value-added chemicals. CHEMOSPHERE 2023; 330:138633. [PMID: 37030343 DOI: 10.1016/j.chemosphere.2023.138633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 04/04/2023] [Accepted: 04/05/2023] [Indexed: 05/14/2023]
Abstract
Rapid urbanization is increasing the world's energy demand, making it necessary to develop alternative energy sources. These growing energy needs can be met by the efficient energy conversion of biomass, which can be done by various means. The use of effective catalysts to transform different types of biomasses will be a paradigm change on the road to the worldwide goal of economic sustainability and environmental protection. The development of alternative energy from biomass is not easy, due to the uneven and complex components present in lignocellulose; accordingly, the majority of biomass is currently processed as waste. The problems may be overcome by the design of multifunctional catalysts, offering adequate control over product selectivity and substrate activation. Hence, this review describes recent developments involving various catalysts such as metallic oxides, supported metal or composite metal oxides, char-based and carbon-based substances, metal carbides and zeolites, with reference to the catalytic conversion of biomass including cellulose, hemicellulose, biomass tar, lignin and their derivative compounds into useful products, including bio-oil, gases, hydrocarbons, and fuels. The main aim is to provide an overview of the latest work on the use of catalysts for successful conversion of biomass. The review ends with conclusions and suggestions for future research, which will assist researchers in utilizing these catalysts for the safe conversion of biomass into valuable chemicals and other products.
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Affiliation(s)
- Muhammad Naeem
- Centre for Inorganic Chemistry, School of Chemistry, University of the Punjab, Quaid-e-Azam Campus, Lahore, 54590, Pakistan
| | - Muhammad Imran
- Centre for Inorganic Chemistry, School of Chemistry, University of the Punjab, Quaid-e-Azam Campus, Lahore, 54590, Pakistan.
| | - Shoomaila Latif
- School of Physical Sciences, University of the Punjab, Lahore, 54590, Pakistan
| | - Adnan Ashraf
- Department of Chemistry, The University of Lahore, Pakistan
| | - Nazim Hussain
- Center for Applied Molecular Biology (CAMB), University of the Punjab, Lahore, 54000, Pakistan
| | - Grzegorz Boczkaj
- Department of Sanitary Engineering, Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, G. Narutowicza St. 11/12, Gdańsk, 80-233, Poland; EkoTech Center, Gdańsk University of Technology, G. Narutowicza St. 11/12, Gdańsk, 80-233, Poland
| | - Wojciech Smułek
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, PL-60965, Poznan, Poland
| | - Teofil Jesionowski
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, PL-60965, Poznan, Poland
| | - Muhammad Bilal
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, PL-60965, Poznan, Poland.
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18
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Stuart NM, Sohlberg K. A method of calculating surface energies for asymmetric slab models. Phys Chem Chem Phys 2023; 25:13351-13358. [PMID: 37144733 DOI: 10.1039/d2cp04460a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Many essential chemical processes, such as adsorption and catalysis, take place at the surface of a solid material. Hence, accurately determining the energy of a solid surface provides crucial information about the material's potential utility for such processes. The standard method of calculating surface energy yields good approximations for solids that, upon cleavage, expose identical surface terminations (symmetric slabs) but suffers critical shortcomings when applied to the multitude of materials that expose atomically different terminations (asymmetric slabs) due to the inaccurate assumption that the two terminations exhibit exactly the same energy. A more rigorous method of calculating the individual energetic contributions of the two terminations of a cleaved slab was pursued in 2018 by Tian and colleagues, however the approach's accuracy is weakened by a similar assumption that frozen asymmetric terminations contribute exactly the same energy. Herein, a novel technique is presented. The method expresses the slab's total energy in terms of the energy contributions of the top (A) and bottom (B) surfaces in both the relaxed and frozen states. Total energies for different combinations of these conditions are obtained through a series of density-functional-theory calculations alternately optimizing different parts of the slab model. The equations are then solved for the individual surface energy contributions. The method shows improvement over the previously-established approach by exhibiting greater precision and internal consistency, while also providing additional information about the contributions of frozen surfaces.
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Affiliation(s)
- Natalie M Stuart
- Department of Chemistry, Drexel University, 3141 Chestnut St, Philadelphia, PA 19104, USA.
| | - Karl Sohlberg
- Department of Chemistry, Drexel University, 3141 Chestnut St, Philadelphia, PA 19104, USA.
- Department of Materials Science & Engineering, Drexel University, 3141 Chestnut St, Philadelphia, PA 19104, USA
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19
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Akhtar K, Bakhsh EM, Khan SB, Khan M, Asiri AM. SnLa 2O 5 wrapped carboxymethyl cellulose mixed calcium alginate nanocomposite beads for efficient reduction of pollutants. Int J Biol Macromol 2023; 233:123564. [PMID: 36754261 DOI: 10.1016/j.ijbiomac.2023.123564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 01/30/2023] [Accepted: 02/01/2023] [Indexed: 02/08/2023]
Abstract
In this project, lanthanum oxide doped tin oxide (SnLa2O5) nanomaterial was prepared and characterized morphologically and physiochemically by different techniques. The catalytic performance of SnLa2O5 was assessed toward catalytic reduction of 4-nitrophenol (4-NP), methyl orange (MO), congo red (CR), methylene blue (MB) and potassium ferricyanide (K3[Fe(CN)6]). SnLa2O5 was found to be efficient for K3[Fe(CN)6] in the presence of NaBH4, which reduced in only 8.0 min. SnLa2O5 was further wrapped in carboxymethyl cellulose mixed calcium alginate (CMC-Alg) hydrogel beads because the powder catalyst cannot be simply recovered from reaction media to recycle and use again. SnLa2O5 wrapped CMC-Alg (SnLa2O5/CMC-Alg) was assessed for detail analysis of K3[Fe(CN)6] reduction. The effect of NaBH4, K3[Fe(CN)6] concentration and amount of catalyst was optimized using SnLa2O5/CMC-Alg. The amount of catalyst has positive impact on catalytic reduction of K3[Fe(CN)6]. The kinetic study revealed that K3[Fe(CN)6] reduction by SnLa2O5 and SnLa2O5/CMC-Alg was fast, which completed in 8.0 and 4.0 min with rate constant of 0.4283 min-1 and 0.7461 min-1, respectively. These findings indicated that the developed SnLa2O5/CMC-Alg is best and proficient nanocatalyst for K3[Fe(CN)6] reduction. The efficiency along with cost-effective and simple treatment route of the developed nanocatalyst have prospect to compete and replace the reputable commercial catalysts.
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Affiliation(s)
- Kalsoom Akhtar
- Chemistry Department, Faculty of Science, King Abdulaziz University, P. O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Esraa M Bakhsh
- Chemistry Department, Faculty of Science, King Abdulaziz University, P. O. Box 80203, Jeddah 21589, Saudi Arabia.
| | - Sher Bahadar Khan
- Chemistry Department, Faculty of Science, King Abdulaziz University, P. O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Mansoor Khan
- Chemistry Department, Faculty of Science, King Abdulaziz University, P. O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Abdullah M Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, P. O. Box 80203, Jeddah 21589, Saudi Arabia; Center of Excellence for Advanced Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
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20
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Abduh NAY, Al-Kahtani A, Algarni TS, Al-Odayni AB. Selective Oxidation of Tetrahydrofuran to Gamma-Butyrolactone over Spinel ZnFe2O4 Nanoparticle Catalyst. Catalysts 2023. [DOI: 10.3390/catal13040692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
The selective oxidation of tetrahydrofuran (THF) to gamma-butyrolactone (GBL) on spinel ZnFe2O4 nanoparticles (ZFNPs) was investigated. The catalyst was prepared with the coprecipitation method and characterized by FTIR, XRD, TEM, SEM, EDS, TGA, XPS, and BET surface area. The characterization techniques showed that a nonuniform spherical spinal oxide with an average particle size of 26 nm was formed. The oxidation reaction was carried out using hydrogen peroxide as an oxidizing agent under solvent-free conditions. GC-MS analysis revealed that the main product was GBL. 2-hydroxytetrahydrofuran (THF-2-OH), gamma-hydroxybutyric acid (GHBA), and gamma-hydroxybutaldehyde (GHBAl) were obtained as minor products. The effects of different reaction parameters, such as temperature, H2O2/THF mole ratio, catalyst dose, reaction time, and reusability, were evaluated. A 47.3% conversion of THF with an 88.2% selectivity of GBL was achieved by conducting the reaction at 80 °C for nine hours using a 1:1 mole ratio of H2O2/THF. A slight increase in the conversion degree was attained at higher temperatures; however, an over-oxidation process was observed as the temperature exceeded 80 °C. The catalyst remained effective and stable over four reuses.
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Affiliation(s)
- Naaser A. Y. Abduh
- Department of Chemistry, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Abdullah Al-Kahtani
- Department of Chemistry, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Tahani Saad Algarni
- Department of Chemistry, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Abdel-Basit Al-Odayni
- Restorative Dental Sciences Department, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
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21
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Groeneveld I, Ariese F, Somsen GW, van Bommel MR. Gas-permeable liquid-core waveguide coupled to LC-MS for studying the influence of oxygen on photodegradation processes. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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22
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Deng S, Guo T, Heier J, Zhang C(J. Unraveling Polysulfide's Adsorption and Electrocatalytic Conversion on Metal Oxides for Li-S Batteries. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2204930. [PMID: 36507567 PMCID: PMC9929279 DOI: 10.1002/advs.202204930] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/10/2022] [Indexed: 06/18/2023]
Abstract
Lithium sulfur (LiS) batteries possess high theoretical capacity and energy density, holding great promise for next generation electronics and electrical vehicles. However, the LiS batteries development is hindered by the shuttle effect and sluggish conversion kinetics of lithium polysulfides (LiPSs). Designing highly polar materials such as metal oxides (MOs) with moderate adsorption and effective catalytic activity is essential to overcome the above issues. To design efficient MOs catalysts, it is critical and necessary to understand the adsorption mechanism and associated catalytic processes of LiPSs. However, most reviews still lack a comprehensive investigation of the basic mechanism and always ignore their in-depth relationship. In this review, a systematic analysis toward understanding the underlying adsorption and catalytic mechanism in LiS chemistry as well as discussion of the typical works concerning MOs electrocatalysts are provided. Moreover, to improve the sluggish "adsorption-diffusion-conversion" process caused by the low conductive nature of MOs, oxygen vacancies and heterostructure engineering are elucidated as the two most effective strategies. The challenges and prospects of MOs electrocatalysts are also provided in the last section. The authors hope this review will provide instructive guidance to design effective catalyst materials and explore practical possibilities for the commercialization of LiS batteries.
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Affiliation(s)
- Shungui Deng
- College of Materials Science & EngineeringSichuan UniversityChengdu610065China
- Laboratory for Functional PolymersEmpaSwiss Federal Laboratories for Materials Science and TechnologyÜberlandstrasse 129DübendorfCH‐8600Switzerland
- Institute of Materials Science and EngineeringEcole Polytechnique Federale de Lausanne (EPFL)Station 12LausanneCH‐1015Switzerland
| | - Tiezhu Guo
- Laboratory for Functional PolymersEmpaSwiss Federal Laboratories for Materials Science and TechnologyÜberlandstrasse 129DübendorfCH‐8600Switzerland
- Key Laboratory of Multifunctional Materials and StructuresMinistry of EducationSchool of Electronic Science and EngineeringXi'an Jiaotong UniversityXi'anShaanxi710049China
| | - Jakob Heier
- Laboratory for Functional PolymersEmpaSwiss Federal Laboratories for Materials Science and TechnologyÜberlandstrasse 129DübendorfCH‐8600Switzerland
| | - Chuanfang (John) Zhang
- College of Materials Science & EngineeringSichuan UniversityChengdu610065China
- Laboratory for Functional PolymersEmpaSwiss Federal Laboratories for Materials Science and TechnologyÜberlandstrasse 129DübendorfCH‐8600Switzerland
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23
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Debgupta J, Lari L, Isaacs M, Carey J, McKenna KP, Lazarov VK, Chechik V, Douthwaite RE. Predictive Removal of Interfacial Defect-Induced Trap States between Titanium Dioxide Nanoparticles via Sub-Monolayer Zirconium Coating. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:660-671. [PMID: 36660098 PMCID: PMC9841567 DOI: 10.1021/acs.jpcc.2c06927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 12/13/2022] [Indexed: 06/17/2023]
Abstract
First principles modeling of anatase TiO2 surfaces and their interfacial contacts shows that defect-induced trap states within the band gap arise from intrinsic structural distortions, and these can be corrected by modification with Zr(IV) ions. Experimental testing of these predictions has been undertaken using anatase nanocrystals modified with a range of Zr precursors and characterized using structural and spectroscopic methods. Continuous-wave electron paramagnetic resonance (EPR) spectroscopy revealed that under illumination, nanoparticle-nanoparticle interfacial hole trap states dominate, which are significantly reduced after optimizing the Zr doping. Fabrication of nanoporous films of these materials and charge injection using electrochemical methods shows that Zr doping also leads to improved electron conductivity and mobility in these nanocrystalline systems. The simple methodology described here to reduce the concentration of interfacial defects may have wider application to improving the efficiency of systems incorporating metal oxide powders and films including photocatalysts, photovoltaics, fuel cells, and related energy applications.
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Affiliation(s)
| | - Leonardo Lari
- Department
of Physics, University of York, Heslington, York YO10 5DD, UK
| | - Mark Isaacs
- HarwellXPS, R92 Research Complex at Harwell, Rutherford Appleton Laboratories,
Harwell, Didcot OX11 0QS, UK
- Department
of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
| | - John Carey
- Department
of Physics, University of York, Heslington, York YO10 5DD, UK
| | - Keith P. McKenna
- Department
of Physics, University of York, Heslington, York YO10 5DD, UK
| | - Vlado K. Lazarov
- Department
of Physics, University of York, Heslington, York YO10 5DD, UK
| | - Victor Chechik
- Department
of Chemistry, University of York, York YO10 5DD, UK
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24
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Selective formation of isoprene via dehydration of 3-methyl-1,3-butanediol over Y2Zr2O7 catalyst. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2022.112854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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25
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Mkhondwane ST, Rajasekhar Pullabhotla VSR. Ozone Initiated pH Dependent Oxidation of Cyclohexane Over Fe Supported SiO2 and γ-Al2O3 Catalysts. Top Catal 2022. [DOI: 10.1007/s11244-022-01761-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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26
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Fernandes Barbosa F, Pinheiro Braga T. Catalytic Conversion of Glycerol to Acetol and Acrolein Using Metal Oxides: Surface Reactions, Prospects and Challenges. ChemCatChem 2022. [DOI: 10.1002/cctc.202200950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Felipe Fernandes Barbosa
- Instituto de Química Universidade Federal do Rio Grande do Norte Laboratório de Peneiras Moleculares (LABPEMOL) 59078-970 Natal Brazil
| | - Tiago Pinheiro Braga
- Instituto de Química Universidade Federal do Rio Grande do Norte Laboratório de Peneiras Moleculares (LABPEMOL) 59078-970 Natal Brazil
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27
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Bekele D, Shibeshi NT, Reshad AS. KNO 3-Loaded Coffee Husk Ash as a Heterogeneous Alkali Catalyst for Waste Frying Oil Valorization into Biodiesel. ACS OMEGA 2022; 7:45129-45143. [PMID: 36530280 PMCID: PMC9753496 DOI: 10.1021/acsomega.2c05572] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 11/15/2022] [Indexed: 06/17/2023]
Abstract
In this study, a heterogeneous basic catalyst was synthesized from a catalyst composite material (CCM) of coffee husk ash and char mixture (A/C) impregnated with KNO3 and employed to transesterify crude waste frying oil (WFO). The effect of CCM calcination temperature (CCMCT) (500-700 °C) on the catalyst physicochemical properties was investigated. A differential scanning calorimeter was used to examine potential phase changes during the calcination of A/C and CCM. The catalysts from each CCMCT were characterized by X-ray diffraction (XRD), Brunauer-Emmet-Teller surface area analyzer, scanning electron microscopy (SEM), SEM with energy-dispersive X-ray diffractometer, colorimeter, and attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectrometer. The methoxy functional group FTIR peak integral value and the dynamic viscosity of the biodiesel synthesized by each catalyst were used to determine the qualitative WFO conversion. Furthermore, the quantitative WFO conversion was determined using nuclear magnetic resonance (1H NMR) analysis. Crystallinity, elemental composition, basicity, and morphology of catalysts were highly dependent on the CCMCT. Without transesterification condition optimization (reaction temperature of 45 ± 2.5 °C, catalyst loading of 3 wt %, methanol to oil molar ratio of 12:1, and reaction time of 1 h), a higher catalytic performance (72.04% WFO conversion) was reached using a catalyst from the CCMCT of 600 °C. When using a coffee husk ash catalyst without KNO3 impregnation (C-00-600), the WFO conversion was only 52.92%. When comparing the C-25-600 and C-00-600 catalysts, it was observed that KNO3 impregnation had a substantial impact on the catalyst crystallinity, basicity, and morphology.
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Affiliation(s)
- Demelash
Tilahun Bekele
- Department
of Chemical Engineering, College of Biological and Chemical Engineering, Addis Ababa Science and Technology University, Addis Ababa16417, Ethiopia
| | - Nurelegne Tefera Shibeshi
- School
of Chemical and Bio-Engineering, Addis Ababa Institute of Technology, Addis Ababa University, Addis Ababa1176, Ethiopia
| | - Ali Shemsedin Reshad
- Department
of Chemical Engineering, College of Biological and Chemical Engineering, Addis Ababa Science and Technology University, Addis Ababa16417, Ethiopia
- Center
of Excellence for Sustainable Energy Research, Addis Ababa Science and Technology University, Addis Ababa16417, Ethiopia
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28
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Direct Z-Scheme g-C3N5/Cu3TiO4 Heterojunction Enhanced Photocatalytic Performance of Chromene-3-Carbonitriles Synthesis under Visible Light Irradiation. Catalysts 2022. [DOI: 10.3390/catal12121593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
In order to make the synthesis of pharmaceutically active carbonitriles efficient, environmentally friendly, and sustainable, the method is regularly examined. Here, we introduce a brand-new, very effective Cu3TiO4/g-C3N5 photocatalyst for the production of compounds containing chromene-3-carbonitriles. The direct Z-Scheme photo-generated charge transfer mechanism used by the Cu3TiO4/g-C3N5 photocatalyst results in a suppressed rate of electron-hole pair recombination and an increase in photocatalytic activity. Experiments showed that the current method has some advantages, such as using an environmentally friendly and sustainable photocatalyst, having a simple procedure, quick reaction times, a good product yield (82–94%), and being able to reuse the photocatalyst multiple times in a row without noticeably decreasing its photocatalytic performance.
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29
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Karrabi M, Malmir M, Shafiei toran poshti E, Heravi MM, Hosseinnejad T. A theoretical and experimental study on ecofriendly one-pot synthesis of pyrazolopyranopyrimidines catalysed by CuO functionalized montmorillonite. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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30
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Mu Y, Williams PT. Recent advances in the abatement of volatile organic compounds (VOCs) and chlorinated-VOCs by non-thermal plasma technology: A review. CHEMOSPHERE 2022; 308:136481. [PMID: 36165927 DOI: 10.1016/j.chemosphere.2022.136481] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/05/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
Most of the volatile organic compounds (VOCs) and especially the chlorinated volatile organic compounds (Cl-VOCs), are regarded as major pollutants due to their properties of volatility, diffusivity and toxicity which pose a significant threat to human health and the eco-environment. Catalytic degradation of VOCs and Cl-VOCs to harmless products is a promising approach to mitigate the issues caused by VOCs and Cl-VOCs. Non-thermal plasma (NTP) assisted catalysis is a promising technology for the efficient degradation of VOCs and Cl-VOCs with higher selectivity under relatively mild conditions compared with conventional thermal catalysis. This review summarises state-of-the-art research of the in plasma catalysis (IPC) of VOCs degradation from three major aspects including: (i) the design of catalysts, (ii) the strategies of deep catalytic degradation and by-products inhibition, and (iii) the fundamental research into mechanisms of NTP activated catalytic VOCs degradation. Particular attention is also given to Cl-VOCs due to their characteristic properties of higher stability and toxicity. The catalysts used for the degradation Cl-VOCs, chlorinated by-products formation and the degradation mechanism of Cl-VOCs are systematically reviewed in each chapter. Finally, a perspective on future challenges and opportunities in the development of NTP assisted VOCs catalytic degradation were discussed.
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Affiliation(s)
- Yibing Mu
- School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - Paul T Williams
- School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, UK.
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31
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Wang X, Syed ZH, Chen Z, Bazak JD, Gong X, Wasson MC, Washton NM, Chapman KW, Notestein JM, Farha OK. Enhanced Catalytic Performance of a Ce/V Oxo Cluster through Confinement in Mesoporous SBA-15. ACS APPLIED MATERIALS & INTERFACES 2022; 14:52886-52893. [PMID: 36395424 DOI: 10.1021/acsami.2c15046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
To increase catalytic efficiency, mesoporous supports have been widely applied to immobilize well-defined metal oxide clusters due to their ability to stabilize highly dispersed clusters. Herein, a redox-active heterometallic Ce12V6-oxo cluster (CeV) was first presynthesized and then incorporated into mesoporous silica, SBA-15, via a straightforward impregnation method. Scanning transmission electron microscopy (STEM) and Fourier transform infrared spectroscopy (FTIR), in concert with scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM-EDS), verified the successful introduction of the CeV cluster inside the pore of SBA-15. The 51V magic angle spinning solid-state nuclear magnetic resonance (51V MAS NMR) spectroscopy and differential pair distribution function (dPDF) analysis confirmed the structural integrity of the CeV cluster inside the SBA-15. The composite was then benchmarked for liquid-phase oxidation of 2-chloroethyl ethyl sulfide (CEES) under mild conditions and gas-phase oxidative dehydrogenation (ODH) of propane under high temperatures (up to 550 °C). The catalytic reactivity results demonstrated 8- and 14-fold increase in turnover frequency (TOF) values of the composite (CeV@10SBA-2) than the bulk CeV cluster under the same conditions for CEES oxidation and ODH, respectively. These results highlight the improved reactivity of the catalytically active CeV cluster as attributed to the higher dispersion of the discrete cluster upon immobilization within the SBA-15 support.
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Affiliation(s)
- Xingjie Wang
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
| | - Zoha H Syed
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
| | - Zhihengyu Chen
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
| | - J David Bazak
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Xinyi Gong
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
| | - Megan C Wasson
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
| | - Nancy M Washton
- Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Karena W Chapman
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
| | - Justin M Notestein
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Omar K Farha
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
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32
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Slaughter J, Coates C, Phillips G, Choudhury D, Bond AD, Grey CP, Wright DS. Synthesis of Heterometallic Zirconium Alkoxide Single-Source Precursors for Bimetallic Oxide Deposition. Inorg Chem 2022; 61:19203-19219. [DOI: 10.1021/acs.inorgchem.2c02852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Jonathan Slaughter
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
- The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot OX11 0RA, United Kingdom
| | - Chloe Coates
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
- The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot OX11 0RA, United Kingdom
| | - George Phillips
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Dipanjana Choudhury
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Andrew D. Bond
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Clare P. Grey
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
- The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot OX11 0RA, United Kingdom
| | - Dominic S. Wright
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
- The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot OX11 0RA, United Kingdom
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33
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Mandooie M, Rahimi M, Nikravesh G, Salehi E. A comprehensive review on zinc-based mixed metal oxide catalysts for dimethyl carbonate synthesis via urea alcoholysis process. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.10.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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34
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Elderdery AY, Alhamidi AH, Elkhalifa AME, Althobiti MM, Eltayeb Omer N, Alsugoor MH, Alsuhaymi N, Atebien EM, Hamza SMA, Alzahrani B, Alanazi F, Subbiah SK, Mok PL. Synthesis, Characterization, and Antimicrobial and Antiproliferative Effects of CuO-TiO 2-Chitosan-Escin Nanocomposites on Human Leukemic MOLT4 Cells. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12213753. [PMID: 36364538 PMCID: PMC9655830 DOI: 10.3390/nano12213753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 09/15/2022] [Accepted: 10/19/2022] [Indexed: 05/13/2023]
Abstract
Nanocomposites comprised of CuO-TiO2-chitosan-escin, which has adjustable physicochemical properties, provide a solution for therapeutic selectivity in cancer treatment. By controlling the intrinsic signaling primarily through the mitochondrial signaling pathway, we desired nanocomposites with enhanced anticancer activity by containing CuO-TiO2-chitosan-escin. The metal oxides CuO and TiO2, the natural polymer chitosan, and a phytochemical compound escin were combined to form CuO-TiO2-chitosan-escin nanocomposites. The synthesized nanocomposites were confirmed and characterized using FTIR spectroscopy, TEM, and UV-Vis absorption spectroscopy. A human leukemia cell line (MOLT-4) was used to assess the efficacy and selectivity of nanocomposites. Based on a cytotoxicity study, CuO-TiO2-chitosan-escin nanocomposites had inhibition concentrations (IC50) of 13.68, 8.9, and 7.14 µg/mL against human T lymphoblast cells after 24, 48, and 72 h of incubation, respectively. Compared with untreated MOLT-4 cells, CuO-TiO2-chitosan-escin nanocomposite-treated cells significantly increased (p < 0.05) caspase-3, -8, and -9 and decreased the levels of antioxidant enzymes GR, SOD, and GSH. Furthermore, MDA for lipid peroxidase and ROS levels significantly increased (p < 0.05) in the treated cells than in the untreated cells. Remarkably, CuO-TiO2-chitosan-escin nanocomposite-mediated control of cell cycles were mainly achieved through the activation of caspase-3, -8, and -9.
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Affiliation(s)
- Abozer Y. Elderdery
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka 42421, Saudi Arabia
- Health Sciences Research Unit, Jouf University, Sakaka 42421, Saudi Arabia
- Correspondence: (A.Y.E.); (P.L.M.)
| | - Abdulaziz H. Alhamidi
- Clinical Laboratory Sciences Department, College of Applied Medical Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ahmed M. E. Elkhalifa
- Department of Public Health, College of Health Sciences, Saudi Electronic University, Riyadh 13316, Saudi Arabia
| | - Maryam M. Althobiti
- Department of Clinical Laboratory Science, College of Applied Medical Science, King Saud University, Shaqra 15572, Saudi Arabia
| | | | - Mahdi H. Alsugoor
- Department of Emergency Medical Services, Faculty of Health Sciences, AlQunfudah, Umm Al-Qura University, Makkah 21912, Saudi Arabia
| | - Naif Alsuhaymi
- Department of Emergency Medical Services, Faculty of Health Sciences, AlQunfudah, Umm Al-Qura University, Makkah 21912, Saudi Arabia
| | - Entesar M. Atebien
- Department of Clinical Laboratory Science, College of Applied Medical Science, King Saud University, Shaqra 15572, Saudi Arabia
| | - Siddiqa M. A. Hamza
- College of Medicine, Department of Pathology, Umm Alqura University Algunfuda, Mecca 24382, Saudi Arabia
| | - Badr Alzahrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka 42421, Saudi Arabia
| | - Fehaid Alanazi
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences-AlQurayyat, Jouf University, Sakaka 42421, Saudi Arabia
| | - Suresh Kumar Subbiah
- Centre for Materials Engineering and Regenerative Medicine, Bharath Institute of Higher Education and Research, Chennai 600073, India
| | - Pooi Ling Mok
- Department of Biomedical Science, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia
- Correspondence: (A.Y.E.); (P.L.M.)
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35
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Horká H, Šťastný M, Bezdička P, Švarcová S. Determination of methanol-derivatives in drying oils after metal oxide-based dispersive solid phase extraction/QuEChERS clean-up. J Chromatogr A 2022; 1681:463490. [PMID: 36103747 DOI: 10.1016/j.chroma.2022.463490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 09/02/2022] [Accepted: 09/05/2022] [Indexed: 10/14/2022]
Abstract
The determination of secondary volatile degradation products in drying oil extracts is substantial to prevent formation of undesirable metal formates in paintings and/or other artefacts. This study develops a simple, cost-effective, and reliable, high-performance liquid chromatography with diode array detector (HPLC-DAD) method to determine three secondary volatile degradation products (methanol, formaldehyde, and formic acid) in drying oils, including linseed, poppy-seed, and walnut oil. Extraction of analytes was performed using QuEChERS-based procedure followed by metal oxide-based dispersive solid-phase extraction (d-SPE) clean-up and presented a good performance for all of the volatile analytes of interest with recoveries in the range of 90-120% after application of the nanostructured cerium oxide-based (CeO2) and zirconia-based (ZrO2) sorbents prepared by favorable and ecological-friendly methods. With a new clean-up solution for samples with high-fat content, it was possible to achieve higher recoveries than with commercial Z-Sep/C18 sorbent. In all cases, relative standard deviations (RSD) of less than 10% were achieved. No significant matrix interference was observed due to the application of effective sorbents in nanostructured form. The developed method was applied to samples of drying oils, and it was found that after storage for three months, all methanol was most likely oxidized to formaldehyde and formic acid. The concentrations of formaldehyde were in the range of 260 - 304 μg∙g-1, while formic acid concentrations ranged between 72 - 386 μg∙g-1. The highest concentration of formaldehyde (304 μg∙g-1) and formic acid (386 μg∙g-1) was found in linseed oil.
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Affiliation(s)
- Hana Horká
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, ALMA Laboratory, Husinec-Řež 1001, 250 68 Husinec-Řež, Czech Republic; Department of Analytical Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43 Prague 2, Czech Republic
| | - Martin Šťastný
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, Department of Solid State Chemistry, Husinec-Řež 1001, 250 68 Husinec-Řež, Czech Republic.
| | - Petr Bezdička
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, ALMA Laboratory, Husinec-Řež 1001, 250 68 Husinec-Řež, Czech Republic
| | - Silvie Švarcová
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, ALMA Laboratory, Husinec-Řež 1001, 250 68 Husinec-Řež, Czech Republic
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36
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37
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Insights into the Redox and Structural Properties of CoOx and MnOx: Fundamental Factors Affecting the Catalytic Performance in the Oxidation Process of VOCs. Catalysts 2022. [DOI: 10.3390/catal12101134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Volatile organic compound (VOC) abatement has become imperative nowadays due to their harmful effect on human health and on the environment. Catalytic oxidation has appeared as an innovative and promising approach, as the pollutants can be totally oxidized at moderate operating temperatures under 500 °C. The most active single oxides in the total oxidation of hydrocarbons have been shown to be manganese and cobalt oxides. The main factors affecting the catalytic performances of several metal-oxide catalysts, including CoOx and MnOx, in relation to the total oxidation of hydrocarbons have been reviewed. The influence of these factors is directly related to the Mars–van Krevelen mechanism, which is known to be applied in the case of the oxidation of VOCs in general and hydrocarbons in particular, using transitional metal oxides as catalysts. The catalytic behaviors of the studied oxides could be closely related to their redox properties, their nonstoichiometric, defective structure, and their lattice oxygen mobility. The control of the structural and textural properties of the studied metal oxides, such as specific surface area and specific morphology, plays an important role in catalytic applications. A fundamental challenge in the development of efficient and low-cost catalysts is to choose the criteria for selecting them. Therefore, this research could be useful for tailoring advanced and high-performance catalysts for the total oxidation of VOCs.
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Maddila S, Kerru N, Jonnalagadda SB. Recent Progress in the Multicomponent Synthesis of Pyran Derivatives by Sustainable Catalysts under Green Conditions. Molecules 2022; 27:6347. [PMID: 36234888 PMCID: PMC9571218 DOI: 10.3390/molecules27196347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/20/2022] [Accepted: 09/22/2022] [Indexed: 12/03/2022] Open
Abstract
Pyrans are one of the most significant skeletons of oxygen-containing heterocyclic molecules, which exhibit a broad spectrum of medicinal applications and are constituents of diverse natural product analogues. Various biological applications of these pyran analogues contributed to the growth advances in these oxygen-containing molecules. Green one-pot methodologies for synthesising these heterocyclic molecules have received significant attention. This review focuses on the recent developments in synthesising pyran ring derivatives using reusable catalysts and emphasises the multicomponent reaction strategies using green protocols. The advantages of the catalysts in terms of yields, reaction conditions, and recyclability are discussed.
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Affiliation(s)
- Suresh Maddila
- Department of Chemistry, GITAM School of Sciences, GITAM University, Visakhapatnam 530045, Andhra Pradesh, India
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban 4000, South Africa
| | - Nagaraju Kerru
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban 4000, South Africa
- Department of Chemistry, GITAM School of Science, GITAM University, Bengaluru Campus, Bengaluru 561203, Karnataka, India
| | - Sreekantha Babu Jonnalagadda
- School of Chemistry & Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, Durban 4000, South Africa
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39
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Partial Oxidation of Methane over CaO Decorated TiO2 Nanocatalyst for Syngas Production in a Fixed Bed Reactor. Catalysts 2022. [DOI: 10.3390/catal12101089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Syngas is a valuable entity for downstream liquid fuel production and chemical industries. The efficient production of syngas via catalytic partial oxidation of methane (CPOM) is an important process. In this study, partial oxidation of methane (POM) was carried out using CaO decorated TiO2 catalysts. The catalysts were synthesized employing the sol-gel method, while the decoration of TiO2 with CaO was achieved in an aqueous solution by wetness impregnation method. The prepared catalysts were characterized by employing XRD, Raman, TG-DTG, and SEM-EDX for structural and morphological analysis. On testing for POM, at 750 °C the catalysts demonstrate excellent CH4 conversion of 83.6 and 79.5% for 2% and 3% CaO loaded TiO2, respectively. While the average H2/CO ratio for both 2% and 3% CaO loaded TiO2, 2.25 and 2.28, respectively, remained slightly above the theoretical value (H2/CO = 2.0) of POM. The improved POM performance is attributed to the optimally loaded CaO on the TiO2 surface that promotes the reaction where TiO2 support ensure less agglomerated particles, resulting into a fine distribution of the active catalytic sites.
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40
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Insight into the transient inactivation effect on Au/TiO2 catalyst by in-situ DRIFT and UV–vis spectroscopy. Nat Commun 2022; 13:5458. [PMID: 36115847 PMCID: PMC9482617 DOI: 10.1038/s41467-022-33187-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 09/06/2022] [Indexed: 11/21/2022] Open
Abstract
Au catalysts have drawn broad attention for catalytic CO oxidation. However, a molecular-level understanding of the reaction mechanism on a fast time-resolved scale is still lacking. Herein, we apply in situ DRIFTS and UV-Vis spectroscopy to monitor the rapid dynamic changes during CO oxidation over Au/TiO2. A pronounced transient inactivation effect likely due to a structural change of Au/TiO2 induced by the reactants (CO and O2) is observed at the beginning of the reaction. The transient inactivation effect is affected by the ratio of CO and O2 concentrations. More importantly, during the unstable state, the electronic properties of the Au particles change, as indicated by the shift of the CO stretching vibration. UV-Vis spectroscopy corroborates the structure change of Au/TiO2 surface induced by the reactants, which leads to a weakening of the Au catalyst’s ability to be oxidized (less O2 adsorption), resulting in the transient inactivation effect. A molecular-level understanding of the Au-catalyzed CO oxidation on a fast time-resolved scale is still lacking. Here the authors monitor the rapid dynamic changes during CO oxidation over Au/TiO2 using in situ DRIFTS and UV-Vis spectroscopy, and reveal that the catalyst undergoes a surprising structural change at the beginning of the reaction.
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41
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López-Goerne TM, Padilla-Godínez FJ, Castellanos M, Perez-Davalos LA. Catalytic nanomedicine: a brief review of bionanocatalysts. Nanomedicine (Lond) 2022; 17:1131-1156. [DOI: 10.2217/nnm-2022-0027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Catalytic nanomedicine is a research area and source of disruptive technology that studies the application of bionanocatalysts (organically functionalized mesoporous nanostructured materials with catalytic properties) in diverse areas such as disinfection, tissue regeneration in chronic wounds and oncology. This paper reviews the emergence of catalytic nanomedicine in 2006, its basic principles, main achievements and future perspectives, as well as giving a summary of the knowledge gaps that need to be addressed to exploit the full potential of this novel discipline. This review intends to foster knowledge dissemination regarding catalytic nanomedicine, and to encourage further research to elucidate the mechanisms and possible applications of these nanomaterials.
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Affiliation(s)
- Tessy M López-Goerne
- Laboratory of Nanotechnology & Nanomedicine, Department of Health Care, Autonomous Metropolitan University-Xochimilco, Mexico City, 04960, Mexico
- Department of Molecular Neuropathology, Institute of Cell Physiology, National Autonomous University of Mexico, Mexico City, 04510, Mexico
| | - Francisco J Padilla-Godínez
- Laboratory of Nanotechnology & Nanomedicine, Department of Health Care, Autonomous Metropolitan University-Xochimilco, Mexico City, 04960, Mexico
- Department of Molecular Neuropathology, Institute of Cell Physiology, National Autonomous University of Mexico, Mexico City, 04510, Mexico
| | - Mariana Castellanos
- Faculty of Medicine, National Autonomous University of Mexico, Mexico City, 04510, Mexico
| | - Luis A Perez-Davalos
- Laboratory of Nanotechnology & Nanomedicine, Department of Health Care, Autonomous Metropolitan University-Xochimilco, Mexico City, 04960, Mexico
- Faculty of Medicine, National Autonomous University of Mexico, Mexico City, 04510, Mexico
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A general method for rapid synthesis of refractory carbides by low-pressure carbothermal shock reduction. Proc Natl Acad Sci U S A 2022; 119:e2121848119. [PMID: 36067324 PMCID: PMC9477234 DOI: 10.1073/pnas.2121848119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Refractory carbides are attractive candidates for support materials in heterogeneous catalysis because of their high thermal, chemical, and mechanical stability. However, the industrial applications of refractory carbides, especially silicon carbide (SiC), are greatly hampered by their low surface area and harsh synthetic conditions, typically have a very limited surface area (<200 m2 g-1), and are prepared in a high-temperature environment (>1,400 °C) that lasts for several or even tens of hours. Based on Le Chatelier's principle, we theoretically proposed and experimentally verified that a low-pressure carbothermal reduction (CR) strategy was capable of synthesizing high-surface area SiC (569.9 m2 g-1) at a lower temperature and a faster rate (∼1,300 °C, 50 Pa, 30 s). Such high-surface area SiC possesses excellent thermal stability and antioxidant capacity since it maintained stability under a water-saturated airflow at 650 °C for 100 h. Furthermore, we demonstrated the feasibility of our strategy for scale-up production of high-surface area SiC (460.6 m2 g-1), with a yield larger than 12 g in one experiment, by virtue of an industrial viable vacuum sintering furnace. Importantly, our strategy is also applicable to the rapid synthesis of refractory metal carbides (NbC, Mo2C, TaC, WC) and even their emerging high-entropy carbides (VNbMoTaWC5, TiVNbTaWC5). Therefore, our low-pressure CR method provides an alternative strategy, not merely limited to temperature and time items, to regulate the synthesis and facilitate the upcoming industrial applications of carbide-based advanced functional materials.
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43
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The role of monomeric VOx supported on anatase in catalytic dehydrogenation of n-octane assisted by CO2 addition. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Dadashi J, Ali Ghasemzadeh M, Alipour S, Zamani F. A review on catalytic reduction/degradation of organic pollution through silver-based hydrogels. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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45
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Cu2O NPs immobilized on Montmorilonite-K10 decorated by acidic-ionic liquid: An environmentally friendly, heterogeneous and recyclable catalyst for the synthesis of benzopyranopyrimidines. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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46
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Bao N, Gold JI, Sheavly JK, Schauer JJ, Zavala VM, Van Lehn RC, Mavrikakis M, Abbott NL. Ordering Transitions of Liquid Crystals Triggered by Metal Oxide-catalyzed Reactions of Sulfur Oxide Species. J Am Chem Soc 2022; 144:16378-16388. [PMID: 36047705 DOI: 10.1021/jacs.2c03424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Liquid crystals (LCs), when supported on reactive surfaces, undergo changes in ordering that can propagate over distances of micrometers, thus providing a general and facile mechanism to amplify atomic-scale transformations on surfaces into the optical scale. While reactions on organic and metal substrates have been coupled to LC-ordering transitions, metal oxide substrates, which offer unique catalytic activities for reactions involving atmospherically important chemical species such as oxidized sulfur species, have not been explored. Here, we investigate this opportunity by designing LCs that contain 4'-cyanobiphenyl-4-carboxylic acid (CBCA) and respond to surface reactions triggered by parts-per-billion concentrations of SO2 gas on anatase (101) substrates. We used electronic structure calculations to predict that the carboxylic acid group of CBCA binds strongly to anatase (101) in a perpendicular orientation, a prediction that we validated in experiments in which CBCA (0.005 mol %) was doped into an LC (4'-n-pentyl-4-biphenylcarbonitrile). Both experiment and computational modeling further demonstrated that SO3-like species, produced by a surface-catalyzed reaction of SO2 with H2O on anatase (101), displace CBCA from the anatase surface, resulting in an orientational transition of the LC. Experiments also reveal the LC response to be highly selective to SO2 over other atmospheric chemical species (including H2O, NH3, H2S, and NO2), in agreement with our computational predictions for anatase (101) surfaces. Overall, we establish that the catalytic activities of metal oxide surfaces offer the basis of a new class of substrates that trigger LCs to undergo ordering transitions in response to chemical species of relevance to atmospheric chemistry.
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Affiliation(s)
- Nanqi Bao
- Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Jake I Gold
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Jonathan K Sheavly
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - James J Schauer
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States.,Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Victor M Zavala
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Reid C Van Lehn
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Manos Mavrikakis
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Nicholas L Abbott
- Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
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Nagarkar RA, Nagabhushana KS, Chaudhari P, Mal NK, Dapurkar SE. Efficient Process for the Production of Alkyl Esters. ACS OMEGA 2022; 7:28129-28137. [PMID: 35990439 PMCID: PMC9386816 DOI: 10.1021/acsomega.2c02247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 07/07/2022] [Indexed: 06/15/2023]
Abstract
This article reports a scalable process development for the production of alkyl esters through the esterification route by utilizing fly ash as a catalyst. The catalyst consisting of mixed oxides such as alumina, iron oxide, calcium oxide, magnesium oxide, and silica was employed for the esterification reaction without modification. The catalyst was evaluated for the conversion of feedstock containing variable amounts of free fatty acids, mono/dibasic acid, and alcohol/polyols into the corresponding alkyl esters. Three types of fly ash catalysts, viz., FS-1, FP-1, and FC-1, were chosen from three different industrial sources. Synthesis of dimethyl adipate was studied as a model reaction. FS-1 fly ash gave the highest yield of dimethyl adipate, whereas FC-1 gave a low yield of dimethyl adipate. The recyclability of FS-1 was evaluated for three cycles, and no loss of yield was observed. Furthermore, the catalyst FS-I was found to be capable of producing good yields for various esterification reactions with different substrates.
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Affiliation(s)
- Rahul A. Nagarkar
- Tata
Chemicals Limited, Innovation Centre, Pune 412108, India
- Manipal
Academy of Higher Education, Manipal 576104, India
| | | | | | | | - Sudhir E. Dapurkar
- Tata
Chemicals Limited, Innovation Centre, Pune 412108, India
- Manipal
Academy of Higher Education, Manipal 576104, India
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Kominami H, Yato R, Tanaka A. Hydrogen‐free hydrogenation of a nitrogen‐containing ring of quinolines in an alcoholic suspension of a titanium(IV) oxide photocatalyst modified with metal cocatalysts. ChemCatChem 2022. [DOI: 10.1002/cctc.202200674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hiroshi Kominami
- Kindai University: Kinki Daigaku Applied Chemistry Kowakae 5778502 Higashiosaka JAPAN
| | - Ryuichi Yato
- Kindai University: Kinki Daigaku Applied Chemistry JAPAN
| | - Atsuhiro Tanaka
- Kindai University: Kinki Daigaku Applied Chemistry Kowakae 5778502 Higashiosaka JAPAN
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Anderson SD, Kreitz B, Turek T, Wehinger GD. Assessment of Concentration and Temperature Distribution in a Berty Reactor for an Exothermic Reaction. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Scott D. Anderson
- Institute of Chemical and Electrochemical Process Engineering, Clausthal University of Technology, Clausthal-Zellerfeld, 38678, Germany
| | - Bjarne Kreitz
- Institute of Chemical and Electrochemical Process Engineering, Clausthal University of Technology, Clausthal-Zellerfeld, 38678, Germany
- School of Engineering, Brown University, Providence, Rhode Island 02912, United States
| | - Thomas Turek
- Institute of Chemical and Electrochemical Process Engineering, Clausthal University of Technology, Clausthal-Zellerfeld, 38678, Germany
| | - Gregor D. Wehinger
- Institute of Chemical and Electrochemical Process Engineering, Clausthal University of Technology, Clausthal-Zellerfeld, 38678, Germany
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50
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Taheri‐Torbati M, Eshghi H. Fe
3
O
4
@CS‐Ni: an efficient and recyclable magnetic nanocatalyst for α‐alkylation of ketones with benzyl alcohols by borrowing hydrogen methodology. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mina Taheri‐Torbati
- Department of Chemistry, Faculty of Science Ferdowsi University of Mashhad Mashhad Iran
| | - Hossein Eshghi
- Department of Chemistry, Faculty of Science Ferdowsi University of Mashhad Mashhad Iran
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