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Gao B, Tian C, Guo L, Zhou J, Wang Z, Fu C, Ran H, Chen W, Huang Q, Wu D, Tang X, Luo Z. Copper Modulated Lead-Free Cs 4 MnSb 2 Cl 12 Double Perovskite Microcrystals for Photocatalytic Reduction of CO 2. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2307543. [PMID: 38070176 PMCID: PMC10853743 DOI: 10.1002/advs.202307543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Indexed: 02/10/2024]
Abstract
In order to deal with the global energy crisis and environmental problems, reducing carbon dioxide through artificial photosynthesis has become a hot topic. Lead halide perovskite is attracted people's attention because of its excellent photoelectric properties, but the toxicity and long-term instability prompt people to search for new photocatalysts. Herein, a series of <111> inorganic double perovskites Cs4 Mn1-x Cux Sb2 Cl12 microcrystals (x = 0, 0.1, 0.2, 0.3, 0.4, and 0.5) are synthesized and characterized. Among them, Cs4 Mn0.7 Cu0.3 Sb2 Cl12 microcrystals have the best photocatalytic performance, and the yields of CO and CH4 are 503.86 and 68.35 µmol g-1 , respectively, after 3 h irradiation, which are the highest among pure phase perovskites reported so far. In addition, in situ Fourier transform infrared (FT-IR) spectroscopy and electron spin resonance (ESR) spectroscopy are used to explore the mechanism of the photocatalytic reaction. The results highlight the potential of this class of materials for photocatalytic reduction reactions.
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Affiliation(s)
- Bo Gao
- School of Materials Science and EngineeringZhengzhou UniversityZhengzhou450001China
| | - Changqing Tian
- College of Optoelectronic EngineeringChongqing University of Posts and TelecommunicationsChongqing400065China
| | - Linfeng Guo
- College of Optoelectronic EngineeringChongqing University of Posts and TelecommunicationsChongqing400065China
| | - Jinchen Zhou
- College of Optoelectronic EngineeringChongqing University of Posts and TelecommunicationsChongqing400065China
| | - Zixian Wang
- College of Optoelectronic EngineeringChongqing University of Posts and TelecommunicationsChongqing400065China
| | - Chengfan Fu
- College of Optoelectronic EngineeringChongqing University of Posts and TelecommunicationsChongqing400065China
| | - Hongmei Ran
- College of Optoelectronic EngineeringChongqing University of Posts and TelecommunicationsChongqing400065China
| | - Wei Chen
- College of Optoelectronic EngineeringChongqing University of Posts and TelecommunicationsChongqing400065China
| | - Qiang Huang
- College of Optoelectronic EngineeringChongqing University of Posts and TelecommunicationsChongqing400065China
| | - Daofu Wu
- State Key Laboratory of CatalysisDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China
| | - Xiaosheng Tang
- School of Materials Science and EngineeringZhengzhou UniversityZhengzhou450001China
- College of Optoelectronic EngineeringChongqing University of Posts and TelecommunicationsChongqing400065China
- Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education)College of Optoelectronic EngineeringChongqing UniversityChongqing400044China
| | - Zhongtao Luo
- School of Materials Science and EngineeringZhengzhou UniversityZhengzhou450001China
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Nguyen VC, Nimbalkar DB, Hoang Huong V, Lee YL, Teng H. Elucidating the mechanism of photocatalytic reduction of bicarbonate (aqueous CO 2) into formate and other organics. J Colloid Interface Sci 2023; 649:918-928. [PMID: 37392682 DOI: 10.1016/j.jcis.2023.06.155] [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: 03/21/2023] [Revised: 05/22/2023] [Accepted: 06/22/2023] [Indexed: 07/03/2023]
Abstract
The photocatalytic reduction of CO2 under solar irradiation is an ideal approach to mitigating global warming, and reducing aqueous forms of CO2 that interact strongly with a catalyst (e.g., HCO3-) is a promising strategy to expedite such reductions. This study uses Pt-deposited graphene oxide dots as a model photocatalyst to elucidate the mechanism of HCO3- reduction. The photocatalyst steadily catalyzes the reduction of an HCO3- solution (at pH = 9) containing an electron donor under 1-sun illumination over a period of 60 h to produce H2 and organic compounds (formate, methanol, and acetate). H2 is derived from solution-contained H2O, which undergoes photocatalytic cleavage to produce •H atoms. Isotopic analysis reveals that all of the organics formed via interactions between HCO3- and •H. This study proposes mechanistic steps, which are governed by the reacting behavior of the •H, to correlate the electron transfer steps and product formation of this photocatalysis. This photocatalysis achieves overall apparent quantum efficiency of 27% in the formation of reaction products under monochromatic irradiation at 420 nm. This study demonstrates the effectiveness of aqueous-phase photocatalysis in converting aqueous CO2 into valuable chemicals and the importance of H2O-derived •H in governing the product selectivity and formation kinetics.
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Affiliation(s)
- Van-Can Nguyen
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Dipak B Nimbalkar
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Vu Hoang Huong
- Faculty of Physics, University of Science, Vietnam National University, Hanoi 100000, Viet Nam
| | - Yuh-Lang Lee
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan; Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan 70101, Taiwan
| | - Hsisheng Teng
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan; Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan 70101, Taiwan; Center of Applied Nanomedicine, National Cheng Kung University, Tainan 70101, Taiwan.
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Wu D, Liu X, Tian C, Zhou J, Lai J, Ran H, Gao B, Zhou M, Huang Q, Tang X. Enhanced photocatalytic activity and mechanism insight of copper-modulated lead-free Cs 2AgSbCl 6 double perovskite microcrystals. iScience 2023; 26:107355. [PMID: 37520698 PMCID: PMC10372833 DOI: 10.1016/j.isci.2023.107355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 04/21/2023] [Accepted: 07/07/2023] [Indexed: 08/01/2023] Open
Abstract
Lead halide perovskites are prospective candidates for CO2 photoconversion. Herein, we report copper-doped lead-free Cs2AgSbCl6 double perovskite microcrystals (MCs) for gas-solid phase photocatalytic CO2 reduction. The 0.2Cu@Cs2AgSbCl6 double perovskite MCs display unprecedented CO2 photoreduction capability with CO and CH4 yields of 412 and 128 μmol g-1, respectively. The ultrafast transient absorption spectroscopy reveals the enhanced separation of photoexcited carriers in copper-doped Cs2AgSbCl6 MCs. The active sites and reaction intermediates on the surface of the doped Cs2AgSbCl6 are dynamically monitored and precisely unraveled based on the in-situ Fourier transform infrared spectroscopy investigation. In combination with density functional theory calculations, it is revealed that the copper-doped Cs2AgSbCl6 MCs facilitate sturdy CO2 adsorption and activation and strikingly enhance the photocatalytic performance. This work offers an in-depth interpretation of the photocatalytic mechanism of Cs2AgSbCl6 doped with copper, which may provide guidance for future design of high-performance photocatalysts for solar fuel production.
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Affiliation(s)
- Daofu Wu
- Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
| | - Xiaoqing Liu
- Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
| | - Changqing Tian
- College of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Jinchen Zhou
- College of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Junan Lai
- Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
| | - Hongmei Ran
- College of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Bo Gao
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Miao Zhou
- Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
| | - Qiang Huang
- College of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
| | - Xiaosheng Tang
- Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
- College of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
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Green Synthesized Copper Assisted Iron Oxide Nanozyme for the Efficient Elimination of Industrial Pollutant via Peroxodisulfate Activation. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Ognjanović M, Nikolić K, Bošković M, Pastor F, Popov N, Marciuš M, Krehula S, Antić B, Stanković DM. Electrochemical Determination of Morphine in Urine Samples by Tailoring FeWO 4/CPE Sensor. BIOSENSORS 2022; 12:932. [PMID: 36354441 PMCID: PMC9688003 DOI: 10.3390/bios12110932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/21/2022] [Accepted: 10/24/2022] [Indexed: 06/16/2023]
Abstract
Morphine (MORPH) is natural alkaloid and mainly used as a pain reliever. Its monitoring in human body fluids is crucial for modern medicine. In this paper, we have developed an electrochemical sensor for submicromolar detection of MORPH. The sensor is based on modified carbon paste electrode (CPE) by investigating the FexW1-xO4 ratio in iron tungstate (FeWO4), as well as the ratio of this material in CPE. For the first time, the effect of the iron-tungsten ratio in terms of achieving the best possible electrochemical characteristics for the detection of an important molecule for humans was examined. Morphological and electrochemical characteristics of materials were studied. The best results were obtained using Fe1W3 and 7.5% of modifier in CPE. For MORPH detection, square wave voltammetry (SWV) was optimized. Under the optimized conditions, Fe1W3@CPE resulted in limit of detection (LOD) of the method of 0.58 µM and limit of quantification (LOQ) of 1.94 µM. The linear operating range between 5 and 85 µM of MORPH in the Britton-Robinson buffer solution (BRBS) at pH 8 as supporting electrolyte was obtained. The Fe1W3@CPE sensor resulted in good selectivity and excellent repeatability with relative standard deviation (RSD) and was applied in real-world samples of human urine. Application for direct MORPH detection, without tedious sample pretreatment procedures, suggests that developed electrochemical sensor has appeared to be a suitable competitor for efficient, precise, and accurate monitoring of the MORPH in biological fluids.
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Affiliation(s)
- Miloš Ognjanović
- VINČA Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12-14, 11000 Belgrade, Serbia
| | - Katarina Nikolić
- VINČA Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12-14, 11000 Belgrade, Serbia
| | - Marko Bošković
- VINČA Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12-14, 11000 Belgrade, Serbia
| | - Ferenc Pastor
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
| | - Nina Popov
- Division of Materials Chemistry, Ruđer Bošković Institute, 10000 Zagreb, Croatia
| | - Marijan Marciuš
- Division of Materials Chemistry, Ruđer Bošković Institute, 10000 Zagreb, Croatia
| | - Stjepko Krehula
- Division of Materials Chemistry, Ruđer Bošković Institute, 10000 Zagreb, Croatia
| | - Bratislav Antić
- VINČA Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12-14, 11000 Belgrade, Serbia
| | - Dalibor M. Stanković
- VINČA Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovića Alasa 12-14, 11000 Belgrade, Serbia
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
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Influence of High Energy Ball Milling and Dispersant on Capacitive Properties of Fe2O3—Carbon Nanotube Composites. JOURNAL OF COMPOSITES SCIENCE 2022. [DOI: 10.3390/jcs6060177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This investigation is motivated by increasing interest in ferrimagnetic materials and composites, which exhibit electrical capacitance. It addresses the need for the development of magnetic materials with enhanced capacitive properties and low electrical resistance. γ-Fe2O3-multiwalled carbon nanotube (MWCNT) composites are developed by colloidal processing and studied for energy storage in negative electrodes of supercapacitors. High energy ball milling (HEBM) of ferrimagnetic γ-Fe2O3 nanoparticles results in enhanced capacitive properties. The effect of HEBM on particle morphology is analyzed. Gallocyanine is used as a co-dispersant for γ-Fe2O3 and MWCNTs. The polyaromatic structure and catechol ligand of gallocyanine facilitated its adsorption on γ-Fe2O3 and MWCNTs, respectively, and facilitated their electrostatic dispersion and mixing. The adsorption mechanisms are discussed. The highest capacitance of 1.53 F·cm−2 is achieved in 0.5 M Na2SO4 electrolyte for composites, containing γ-Fe2O3, which is high energy ball milled and co-dispersed with MWCNTs using gallocyanine. HEBM and colloidal processing strategies allow high capacitance at low electrical resistance, which facilitates efficient charge–discharge. Obtained composites are promising for fabrication of multifunctional devices based on mutual interaction of ferrimagnetic and capacitive properties.
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Mousavi SE, Younesi H, Bahramifar N, Tamunaidu P, Karimi-Maleh H. A novel route to the synthesis of α-Fe2O3@C@SiO2/TiO2 nanocomposite from the metal-organic framework as a photocatalyst for water treatment. CHEMOSPHERE 2022; 297:133992. [PMID: 35247450 DOI: 10.1016/j.chemosphere.2022.133992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/03/2022] [Accepted: 02/11/2022] [Indexed: 06/14/2023]
Abstract
In this study, an attempt was made to synthesize metal-organic frameworks (MOFs) based magnetic iron particles as photocatalysts for textile dye wastewater. Improvement strategy was a novel two-step dry method without using conventional methods to eliminate the consumption of chemical reagents. First, the heterogeneous photocatalyst of Fe-MOFs derived magnetic carbon nanocomposite with carboxylic acid surface functional groups (Fe@C-COOH) was achieved. Next, the α-Fe2O3@C@SiO2/TiO2 was successfully synthesized followed by a sol-gel method to coat the SiO2 shell and a solvothermal method to coat the surface of the intermediate TiO2 particles. The as-synthesized nanocomposite materials were characterized and physicochemical analytical equipment. Further, the investigation on magnetic photocatalytic nanocomposite α-Fe2O3@C@SiO2/TiO2 performance of dye degradation and photocatalytic activity on Reactive yellow 145 (RY145), using as an indicator was conducted. The as-synthesized nanocomposite particles were characterized using X-ray powder diffraction (XRD), thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM), X-ray energy dispersive spectroscopy (EDX), and scanning electron microscopy (SEM) techniques. The structural characterization of the as-synthesized materials proved that these methods generate oxygen-containing functional groups, such as, -OH, -CO, and -COOH, which increases the polarity and hydrophilicity of the photocatalyst. The photocatalytic oxidation of RY145 dye under UVc light was discussed by the apparent first-order reaction rate and the kinetic model of the Langmuir-Hinshelwood followed a better fitting. The optimal performance of the composite is at pH = 2, 15 mg/100 mL of photocatalyst dose, 150 mg/L concentration of the dye RY145 at 25 °C temperature under UVc lamp irradiation for 90 min, and with the apparent reaction rate constant was 0.0165 min-1. The thermodynamic analysis of activation parameters computed by the Eyring model and based on transition state theory (TST), an endothermic reaction with a positive value for Δ‡Ho (50.16 kJ mol-1) and a negative value for Δ‡So (-153 J/mol K) both contribute toward achieving positive values for Δ‡Go and a nonspontaneous process. The proposed α-Fe2O3@C@SiO2/TiO2 demonstrated a high capability of photocatalytic degradation up to 97% after five successive cycles at the optimal condition compared to that of Fe3O4@C (18.74%) and Fe@C-COOH (77.9%) without reusability.
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Affiliation(s)
- Seyedeh Elaheh Mousavi
- Department of Environmental Science, Faculty of Natural Resources, Tarbiat Modares University, B.O. Box 46414-356, Tehran, Iran
| | - Habibollah Younesi
- Department of Environmental Science, Faculty of Natural Resources, Tarbiat Modares University, B.O. Box 46414-356, Tehran, Iran.
| | - Nader Bahramifar
- Department of Environmental Science, Faculty of Natural Resources, Tarbiat Modares University, B.O. Box 46414-356, Tehran, Iran
| | - Pramila Tamunaidu
- Malaysia-Japan Advanced Research Centre, Malaysia Japan International Institute of Technology, Universiti Teknologi Malaysia, 84600, Pagoh, Johor, Malaysia
| | - Hassan Karimi-Maleh
- School of Resources and Environment, University of Electronics Science and Technology of China (UESTC), 611731, China; Department of Chemical Engineering and Energy, Quchan University of Technology, Quchan, Iran; Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, 2028 Johannesburg, P.O. Box 17011, South Africa.
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8
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Sheng J, He Y, Huang M, Yuan C, Wang S, Dong F. Frustrated Lewis Pair Sites Boosting CO2 Photoreduction on Cs2CuBr4 Perovskite Quantum Dots. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00037] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jianping Sheng
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, China
| | - Ye He
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Ming Huang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore
| | - Chaowei Yuan
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Shengyao Wang
- College of Science, Key Laboratory of Environment Correlative Dietology of Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
| | - Fan Dong
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, China
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Huang XL. What are the inorganic nanozymes? Artificial or inorganic enzymes! NEW J CHEM 2022. [DOI: 10.1039/d2nj02088b] [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]
Abstract
The research on inorganic nanozymes remains very active since the first paper on the “intrinsic peroxidase-like properties of ferromagnetic nanoparticles” was published in Nature Nanotechnology in 2007. However, there is...
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Kumar RS, Sinha A, Sharma H, Sharma T. High performance carbon dioxide foams of nanocomposites of binary colloids for effective carbon utilization in enhanced oil recovery applications. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117659] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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Alzeer MIM, Nguyen H, Cheeseman C, Kinnunen P. Alkali-Activation of Synthetic Aluminosilicate Glass With Basaltic Composition. Front Chem 2021; 9:715052. [PMID: 34527659 PMCID: PMC8437132 DOI: 10.3389/fchem.2021.715052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 08/17/2021] [Indexed: 11/20/2022] Open
Abstract
Alkali-activated materials (AAMs) are a potential alternative to Portland cement because they can have high strength, good durability and low environmental impact. This paper reports on the structural and mechanical characteristics of aluminosilicate glass with basalt-like compositions, as a feedstock for AAMs. The alkali-activation kinetics, microstructure, and mechanical performance of the alkali activated glass were investigated. The results show that AAMs prepared from basalt glass have high compressive strength (reaching up to 90 MPa after 7 days of hydration) compared to those made using granulated blast furnace slag (GBFS). In addition, calorimetry data show that the hydrolysis of the developed glass and subsequent polymerization of the reaction product occur at a faster rate compared to GBFS. Furthermore, the obtained results show that the alkali activation of the developed glass formed sodium aluminosilicate hydrate (N-A-S-H) intermixed with Ca aluminosilicate hydrate gel (C-A-S-H), while the alkali activation of GBFS resulted in predominantly C-A-S-H gel. The developed glass can be formed from carbonate-free and abundant natural resources such as basalt rocks or mixtures of silicate minerals. Therefore, the glass reported herein has high potential as a new feedstock of AAMs.
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Affiliation(s)
- Mohammad I M Alzeer
- Fibre and Particle Engineering Research Unit, University of Oulu, Oulu, Finland
| | - Hoang Nguyen
- Fibre and Particle Engineering Research Unit, University of Oulu, Oulu, Finland
| | - Christopher Cheeseman
- UKCRIC Advanced Infrastructure Materials Laboratory, Department of Civil and Environmental Engineering, Imperial College London, London, United Kingdom
| | - Paivo Kinnunen
- Fibre and Particle Engineering Research Unit, University of Oulu, Oulu, Finland
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12
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Chemistry of H2S over the surface of Common solid sorbents in industrial natural gas desulfurization. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.05.064] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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CO2 Hydrogenation to Methane over Ni-Catalysts: The Effect of Support and Vanadia Promoting. Catalysts 2021. [DOI: 10.3390/catal11040433] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Within the Waste2Fuel project, innovative, high-performance, and cost-effective fuel production methods are developed to target the “closed carbon cycle”. The catalysts supported on different metal oxides were characterized by XRD, XPS, Raman, UV-Vis, temperature-programmed techniques; then, they were tested in CO2 hydrogenation at 1 bar. Moreover, the V2O5 promotion was studied for Ni/Al2O3 catalyst. The precisely designed hydrotalcite-derived catalyst and vanadia-promoted Ni-catalysts deliver exceptional conversions for the studied processes, presenting high durability and selectivity, outperforming the best-known catalysts. The equilibrium conversion was reached at temperatures around 623 K, with the primary product of reaction CH4 (>97% CH4 yield). Although the Ni loading in hydrotalcite-derived NiWP is lower by more than 40%, compared to reference NiR catalyst and available commercial samples, the activity increases for this sample, reaching almost equilibrium values (GHSV = 1.2 × 104 h–1, 1 atm, and 293 K).
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14
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Moradzaman M, Mul G. In Situ Raman Study of Potential‐Dependent Surface Adsorbed Carbonate, CO, OH, and C Species on Cu Electrodes During Electrochemical Reduction of CO
2. ChemElectroChem 2021. [DOI: 10.1002/celc.202001598] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mozhgan Moradzaman
- Photocatalytic Synthesis Group Faculty of Science & Technology of the University of Twente PO Box 217 Enschede The Netherlands
| | - Guido Mul
- Photocatalytic Synthesis Group Faculty of Science & Technology of the University of Twente PO Box 217 Enschede The Netherlands
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15
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Xyloglucan-based hybrid nanocomposite with potential for biomedical applications. Int J Biol Macromol 2020; 168:722-732. [PMID: 33232700 DOI: 10.1016/j.ijbiomac.2020.11.128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 10/19/2020] [Accepted: 11/18/2020] [Indexed: 11/23/2022]
Abstract
Natural polymer-based hybrid nanocomposites have been proposed as one of the most promising tools for biomedical applications, including disease treatment and diagnosis procedures. Xyloglucan nanocapsules can simultaneously load magnetic iron oxide nanoparticles and bioactive for a specific tissue, reducing the processes of degradation and metabolic inactivation of molecules with biological activity. In this work, magnetic nanocapsules of xyloglucan loaded with hydrophilic sulfated quercetin (MNXQ_SO3) were successfully synthesized by inverse miniemulsion process through interfacial polymerization. The polymeric shell formation of nanocapsules was evidenced by Fourier Transform Infrared spectroscopy and Transmission Electron Microscopy. The ferrofluid (Fe3O4@PAAS) incorporated into the xyloglucan nanocapsules was synthesized by hydrothermal method, using polyacrylic acid sodium salt as coating. Dynamic Light Scattering technique confirmed the nanomeric dimensions (202.3 nm) and the good colloidal stability (-40.2 mV) of MNXQ_SO3. The saturation magnetization analyses pointed out the superparamagnetic behavior of Fe3O4@PAAS (48 emu/g) and MNXQ_SO3 (4.2 emu/g). MNXQ_SO3 was able to modify the release profile of sulfated quercetin (67%) when compared to the free bioactive (100%), exhibiting a release profile compatible with the zero-order kinetic model. The results showed that the development of MNXQ_SO3 presents a new perspective for biomedical applications, including studies of targeted drug delivery.
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16
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Yang Y, Ajmal S, Feng Y, Li K, Zheng X, Zhang L. Insight into the Formation and Transfer Process of the First Intermediate of CO
2
Reduction over Ag‐Decorated Dendritic Cu. Chemistry 2019; 26:4080-4089. [DOI: 10.1002/chem.201904063] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Yang Yang
- Shanghai Key Laboratory of Atmospheric Particle Pollution and PreventionDepartment of Environmental Science and EngineeringFudan University Shanghai 200433 P. R. China
| | - Saira Ajmal
- Shanghai Key Laboratory of Atmospheric Particle Pollution and PreventionDepartment of Environmental Science and EngineeringFudan University Shanghai 200433 P. R. China
| | - Yiqing Feng
- Shanghai Key Laboratory of Atmospheric Particle Pollution and PreventionDepartment of Environmental Science and EngineeringFudan University Shanghai 200433 P. R. China
| | - Kejian Li
- Shanghai Key Laboratory of Atmospheric Particle Pollution and PreventionDepartment of Environmental Science and EngineeringFudan University Shanghai 200433 P. R. China
| | - Xiuzhen Zheng
- Shanghai Key Laboratory of Atmospheric Particle Pollution and PreventionDepartment of Environmental Science and EngineeringFudan University Shanghai 200433 P. R. China
| | - Liwu Zhang
- Shanghai Key Laboratory of Atmospheric Particle Pollution and PreventionDepartment of Environmental Science and EngineeringFudan University Shanghai 200433 P. R. China
- Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092 P. R. China
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17
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On the origin of the elusive first intermediate of CO 2 electroreduction. Proc Natl Acad Sci U S A 2018; 115:E9261-E9270. [PMID: 30224482 DOI: 10.1073/pnas.1802256115] [Citation(s) in RCA: 175] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
We resolve the long-standing controversy about the first step of the CO2 electroreduction to fuels in aqueous electrolytes by providing direct spectroscopic evidence that the first intermediate of the CO2 conversion to formate on copper is a carboxylate anion *CO2 - coordinated to the surface through one of its C-O bonds. We identify this intermediate and gain insight into its formation, its chemical and electronic properties, as well as its dependence on the electrode potential by taking advantage of a cutting-edge methodology that includes operando surface-enhanced Raman scattering (SERS) empowered by isotope exchange and electrochemical Stark effects, reaction kinetics (Tafel) analysis, and density functional theory (DFT) simulations. The SERS spectra are measured on an operating Cu surface. These results advance the mechanistic understanding of CO2 electroreduction and its selectivity to carbon monoxide and formate.
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18
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Huang XL. Hydrolysis of Phosphate Esters Catalyzed by Inorganic Iron Oxide Nanoparticles Acting as Biocatalysts. ASTROBIOLOGY 2018; 18:294-310. [PMID: 29489387 DOI: 10.1089/ast.2016.1628] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Phosphorus ester hydrolysis is one of the key chemical processes in biological systems, including signaling, free-energy transaction, protein synthesis, and maintaining the integrity of genetic material. Hydrolysis of this otherwise kinetically stable phosphoester and/or phosphoanhydride bond is induced by enzymes such as purple acid phosphatase. Here, I report that, as in previously reported aged inorganic iron ion solutions, the iron oxide nanoparticles in the solution, which are trapped in a dialysis membrane tube filled with the various iron oxides, significantly promote the hydrolysis of the various phosphate esters, including the inorganic polyphosphates, with enzyme-like kinetics. This observation, along with those of recent studies of iron oxide, vanadium pentoxide, and molybdenum trioxide nanoparticles that behave as mimics of peroxidase, bromoperoxidase, and sulfite oxidase, respectively, indicates that the oxo-metal bond in the oxide nanoparticles is critical for the function of these corresponding natural metalloproteins. These inorganic biocatalysts challenge the traditional concept of replicator-first scenarios and support the metabolism-first hypothesis. As biocatalysts, these inorganic nanoparticles with enzyme-like activity may work in natural terrestrial environments and likely were at work in early Earth environments as well. They may have played an important role in the C, H, O, S, and P metabolic pathway with regard to the emergence and early evolution of life. Key Words: Enzyme-Hydrolysis-Iron oxide-Nanoparticles-Origin of life-Phosphate ester. Astrobiology 18, 294-310.
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19
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Xi L, Schwanke C, Zhou D, Drevon D, van de Krol R, Lange KM. In situ XAS study of CoB i modified hematite photoanodes. Dalton Trans 2017; 46:15719-15726. [PMID: 29095446 DOI: 10.1039/c7dt02647a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solar water splitting is a potentially scalable method to store solar energy in the form of renewable hydrogen gas. In this study, we demonstrate that the photoelectrochemical (PEC) performance of hematite photoanodes can be improved by modification with the oxygen evolution catalyst CoBi. The current density at 1.23 V of the pristine hematite under one sun is 0.88 mA cm-2 and it increases to 1.12 mA cm-2 after CoBi modification (∼27% improvement). The presence of a CoBi cocatalayst layer is proposed to improve the oxygen evolution reaction (OER) kinetics and also to prevent electron-hole recombination at the surface via passivating surface defects as well as suppressing the tunneling of electrons from the hematite core, thus improving the photocurrents and resulting in a negative shift of photocurrent onset potentials. These effects of CoBi modification are supported by experimental data obtained by performing electrochemical impedance spectroscopy (EIS), PEC and incident photon-to-current efficiency (IPCE) measurements. To investigate the electronic structure of the CoBi cocatalyst deposited on hematite, XPS and in situ X-ray absorption spectroscopy (XAS) are employed. Co K-edge spectra at different potentials and light conditions are recorded. This makes the present work different from most of the previous studies. Using a quantitative analysis method, information on the mean oxidation state of Co in the CoBi film under applied potential and illumination is revealed. We also compare different methods for determining the oxidation state from the edge position and find that the integral method and half height methods are most suitable. In summary, the present work underlines the improvement of the semiconductor/cocatalyst interface of oxygen evolving photoanodes and strengthens the importance of in situ XAS spectroscopy when studying catalysts. This study is the first report so far combining the studies of the PEC performance of a CoBi modified hematite nanorod array photoanode and in situ XAS at the Co K-edge.
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Affiliation(s)
- Lifei Xi
- Young Investigator Group Operando Characterization of Solar Fuel Materials (EE-NOC), Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 12489 Berlin, Germany.
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20
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Acelas NY, Hadad C, Restrepo A, Ibarguen C, Flórez E. Adsorption of Nitrate and Bicarbonate on Fe-(Hydr)oxide. Inorg Chem 2017; 56:5455-5464. [DOI: 10.1021/acs.inorgchem.7b00513] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nancy Y. Acelas
- Grupo de Materiales con Impacto, Mat&mpac. Facultad
de Ciencias Básicas, Universidad de Medellín, Medellín, Colombia
| | - Cacier Hadad
- Instituto de Química, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - Albeiro Restrepo
- Instituto de Química, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - César Ibarguen
- Grupo de Materiales con Impacto, Mat&mpac. Facultad
de Ciencias Básicas, Universidad de Medellín, Medellín, Colombia
- Instituto de Química, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia
| | - Elizabeth Flórez
- Grupo de Materiales con Impacto, Mat&mpac. Facultad
de Ciencias Básicas, Universidad de Medellín, Medellín, Colombia
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21
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Wang C, Shi J, Cui X, Zhang J, Zhang C, Wang L, Lv B. The role of CO2 in dehydrogenation of ethylbenzene over pure α-Fe2O3 catalysts with different facets. J Catal 2017. [DOI: 10.1016/j.jcat.2016.10.032] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Król M, Minkiewicz J, Mozgawa W. IR spectroscopy studies of zeolites in geopolymeric materials derived from kaolinite. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.02.027] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Kim Y, Trung TSB, Yang S, Kim S, Lee H. Mechanism of the Surface Hydrogen Induced Conversion of CO2 to Methanol at Cu(111) Step Sites. ACS Catal 2016. [DOI: 10.1021/acscatal.5b02083] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yeonwoo Kim
- Molecular-Level
Interface Research Center, Department of Chemistry, KAIST, Daejeon 34141, Republic of Korea
| | - Tran Si Bui Trung
- Molecular-Level
Interface Research Center, Department of Chemistry, KAIST, Daejeon 34141, Republic of Korea
| | - Sena Yang
- Molecular-Level
Interface Research Center, Department of Chemistry, KAIST, Daejeon 34141, Republic of Korea
| | - Sehun Kim
- Molecular-Level
Interface Research Center, Department of Chemistry, KAIST, Daejeon 34141, Republic of Korea
| | - Hangil Lee
- Department
of Chemistry, Sookmyung Women’s University, Seoul 04310, Republic of Korea
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24
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Probing the surface speciation of uranium (VI) on iron (hydr)oxides by in situ ATR FT-IR spectroscopy. J Colloid Interface Sci 2014; 416:133-8. [DOI: 10.1016/j.jcis.2013.10.054] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 10/16/2013] [Accepted: 10/20/2013] [Indexed: 11/19/2022]
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25
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Wang T, Huang MC, Liu FW, Hsieh YK, Chang WS, Lin JC, Wang CF. Interfacial phenomena in hematite photoanodes fabricated by directly associating iron oxide suspensions with FTO substrates using a dipping-annealing method. RSC Adv 2014. [DOI: 10.1039/c3ra45692g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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26
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Song X, Boily JF. Carbon dioxide binding at dry FeOOH mineral surfaces: evidence for structure-controlled speciation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:9241-9248. [PMID: 23885755 DOI: 10.1021/es4020597] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Interactions between CO2(g) and mineral surfaces are important to atmospheric and terrestrial settings. This study provides detailed evidence on how differences in mineral surface structure impact carbonate speciation resulting from CO2(g) adsorption reactions. It was achieved by resolving the identity of adsorption sites and geometries of (bi)carbonate species at surfaces of nanosized goethite (α-FeOOH) and lepidocrocite (γ-FeOOH) particles. Fourier transform infrared spectroscopy was used to obtain this information on particles contacted with atmospheres of CO2(g). Vibrational modes of surface hydroxo groups covering these particles were first monitored. These showed that only one type of the surface groups that are singly coordinated to Fe atoms (-OH) are involved in the formation of (bi)carbonate species. Those of higher coordination numbers (μ-OH, μ3-OH) do not participate. Adsorption geometries were then resolved by investigating the C-O stretching region, assisted by density functional theoretical calculations. These efforts provided indications leaning toward a predominance of monodentate mononuclear species, -O-CO2Hx=[0,1]. In contrast, monodentate binuclear species of (-O)2-COHx=[0,1], are expected to form at particle terminations and surface defects. Finally, calculations suggested that bicarbonate is the dominant species on goethite, while a mixture of bicarbonate and carbonate species is present on lepidocrocite, a result stemming from different hydrogen bonding patterns at these mineral surfaces.
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Affiliation(s)
- Xiaowei Song
- Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden.
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