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Nguyen MB. Photocatalysis oxidative desulfurization of dibenzothiophene in extremely deep liquid fuels on the Z-scheme catalyst ZnO-CuInS 2-ZnS intelligently integrated with carbon quantum dots: performance, mechanism, and stability. RSC Adv 2024; 14:26123-26132. [PMID: 39161443 PMCID: PMC11331397 DOI: 10.1039/d4ra04599h] [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: 06/24/2024] [Accepted: 08/06/2024] [Indexed: 08/21/2024] Open
Abstract
In this study, we improved the electrochemical and photocatalytic properties of the ZnO-CuInS2-ZnS (ZCZ) material by integrating with carbon quantum dots (CQD) with particle sizes from 2 to 5 nm. The integration of ZnO-CuInS2-ZnS with carbon quantum dots (ZnO-CuInS2-ZnS/CQD:ZCZ-CQD) enhanced the visible light absorption, significantly reduced the electron-hole recombination rate, and facilitated the electron transfer and separation processes as confirmed by UV-visible diffuse reflectance spectroscopy (UV-vis DRS), photoluminescence (PL), and electrochemical impedance spectroscopy (EIS). The successful integration of ZCZ with carbon quantum dots was confirmed using X-ray photoelectron spectroscopy (XPS), energy dispersive spectroscopy (EDS) and transmission electron microscopy (TEM) methods. The ZCZ/CQD photocatalyst removed up to 98.32% of DBT after 120 minutes of reaction, maintained over 90% durability after 10 cycles, and retained its structure without any changes. The ZCZ photocatalyst integrated with CQD enhances faster dibenzothiophene (DBT) removal by 4.46, 3.24, 2.53, and 1.72 times compared to ZnO, CuInS2, ZnS, and ZnO-CuInS2-ZnS, respectively. Factors influencing the oxidation process of DBT including the mass of the photocatalyst, initial DBT concentration, stability, and reaction kinetics were studied. Through active species trapping experiments, this study demonstrated that the formation of ˙O2 - and ˙OH radicals determines the reaction rate. The mechanism of photocatalysis on ZCZ-CQD materials and the intermediate products formed in the process of photocatalytic oxidative desulfurization of dibenzothiophene is proposed based on electrochemical measurements and GC-MS results.
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Affiliation(s)
- Manh B Nguyen
- Institute of Chemistry, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet, Cau Giay Hanoi Vietnam
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Larsen JK, Sopiha KV, Persson C, Platzer-Björkman C, Edoff M. Experimental and Theoretical Study of Stable and Metastable Phases in Sputtered CuInS 2. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2200848. [PMID: 35726048 PMCID: PMC9376846 DOI: 10.1002/advs.202200848] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/01/2022] [Indexed: 06/15/2023]
Abstract
The chalcopyrite Cu(In,Ga)S2 has gained renewed interest in recent years due to the potential application in tandem solar cells. In this contribution, a combined theoretical and experimental approach is applied to investigate stable and metastable phases forming in CuInS2 (CIS) thin films. Ab initio calculations are performed to obtain formation energies, X-ray diffraction (XRD) patterns, and Raman spectra of CIS polytypes and related compounds. Multiple CIS structures with zinc-blende and wurtzite-derived lattices are identified and their XRD/Raman patterns are shown to contain overlapping features, which could lead to misidentification. Thin films with compositions from Cu-rich to Cu-poor are synthesized via a two-step approach based on sputtering from binary targets followed by high-temperature sulfurization. It is discovered that several CIS polymorphs are formed when growing the material with this approach. In the Cu-poor material, wurtzite CIS is observed for the first time in sputtered thin films along with chalcopyrite CIS and CuAu-ordered CIS. Once the wurtzite CIS phase has formed, it is difficult to convert into the stable chalcopyrite polymorph. CuIn5 S8 and NaInS2 accommodating In-excess are found alongside the CIS polymorphs. It is argued that the metastable polymorphs are stabilized by off-stoichiometry of the precursors, hence tight composition control is required.
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Affiliation(s)
- Jes K Larsen
- Division of Solar Cell Technology, Department of Materials Science and Engineering, Uppsala University, Box 534, Uppsala, SE-75237, Sweden
| | - Kostiantyn V Sopiha
- Division of Solar Cell Technology, Department of Materials Science and Engineering, Uppsala University, Box 534, Uppsala, SE-75237, Sweden
| | - Clas Persson
- Centre for Materials Science and Nanotechnology/Department of Physics, University of Oslo, Blindern, Box 1048, Oslo, NO-0316, Norway
- Department of Materials Science and Engineering, Royal Institute of Technology, Stockholm, SE-10044, Sweden
| | - Charlotte Platzer-Björkman
- Division of Solar Cell Technology, Department of Materials Science and Engineering, Uppsala University, Box 534, Uppsala, SE-75237, Sweden
| | - Marika Edoff
- Division of Solar Cell Technology, Department of Materials Science and Engineering, Uppsala University, Box 534, Uppsala, SE-75237, Sweden
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Lee S, Hoyer CE, Liao C, Li X, Holmberg VC. Phase-Controlled Synthesis and Quasi-Static Dielectric Resonances in Silver Iron Sulfide (AgFeS 2 ) Nanocrystals. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2104975. [PMID: 34923741 DOI: 10.1002/smll.202104975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/21/2021] [Indexed: 06/14/2023]
Abstract
Ternary metal-chalcogenide semiconductor nanocrystals are an attractive class of materials due to their tunable optoelectronic properties that result from a wide range of compositional flexibility and structural diversity. Here, the phase-controlled synthesis of colloidal silver iron sulfide (AgFeS2 ) nanocrystals is reported and their resonant light-matter interactions are investigated. The product composition can be shifted selectively from tetragonal to orthorhombic by simply adjusting the coordinating ligand concentration, while keeping the other reaction parameters unchanged. The results show that excess ligands impact precursor reactivity, and consequently the nanocrystal growth rate, thus deterministically dictating the resulting crystal structure. Moreover, it is demonstrated that the strong ultraviolet-visible extinction peak exhibited by AgFeS2 nanocrystals is a consequence of a quasi-static dielectric resonance (DR), analogous to the optical response observed in CuFeS2 nanocrystals. Spectroscopic studies and computational calculations confirm that a negative permittivity at ultraviolet/visible frequencies arises due to the electronic structure of these intermediate-band (IB) semiconductor nanocrystals, resulting in a DR consisting of resonant valence-band-to-intermediate-band excitations, as opposed to the well-known localized surface plasmon resonance response typically observed in metallic nanostructures. Overall, these results expand the current library of an underexplored class of IB semiconductors with unique optical properties, and also enrich the understanding of DRs in ternary metal-iron-sulfide nanomaterials.
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Affiliation(s)
- Soohyung Lee
- Department of Chemical Engineering, University of Washington, Seattle, WA, 98195-1750, USA
| | - Chad E Hoyer
- Department of Chemistry, University of Washington, Seattle, WA, 98195-1700, USA
| | - Can Liao
- Department of Chemistry, University of Washington, Seattle, WA, 98195-1700, USA
| | - Xiaosong Li
- Department of Chemistry, University of Washington, Seattle, WA, 98195-1700, USA
- Molecular Engineering and Sciences Institute, University of Washington, Seattle, WA, 98195-1652, USA
- Clean Energy Institute, University of Washington, Seattle, WA, 98195-1653, USA
| | - Vincent C Holmberg
- Department of Chemical Engineering, University of Washington, Seattle, WA, 98195-1750, USA
- Molecular Engineering and Sciences Institute, University of Washington, Seattle, WA, 98195-1652, USA
- Clean Energy Institute, University of Washington, Seattle, WA, 98195-1653, USA
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Senevirathna DC, Werrett MV, Pai N, Blair VL, Spiccia L, Andrews PC. Formation of Group 11 Bismuth Sulfide Nanoparticles Using Bismuth Dithioates under Mild Conditions. Chemistry 2017; 23:8171-8175. [PMID: 28470785 DOI: 10.1002/chem.201701952] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Indexed: 11/09/2022]
Affiliation(s)
| | | | - Narendra Pai
- School of Chemistry Monash University Melbourne Victoria 3800 Australia
| | - Victoria L. Blair
- School of Chemistry Monash University Melbourne Victoria 3800 Australia
| | - Leone Spiccia
- School of Chemistry Monash University Melbourne Victoria 3800 Australia
| | - Philip C. Andrews
- School of Chemistry Monash University Melbourne Victoria 3800 Australia
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Reiss P, Carrière M, Lincheneau C, Vaure L, Tamang S. Synthesis of Semiconductor Nanocrystals, Focusing on Nontoxic and Earth-Abundant Materials. Chem Rev 2016; 116:10731-819. [DOI: 10.1021/acs.chemrev.6b00116] [Citation(s) in RCA: 382] [Impact Index Per Article: 47.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Peter Reiss
- Université Grenoble Alpes, INAC-SyMMES, F-38054 Grenoble Cedex 9, France
- CEA, INAC-SyMMES-STEP/LEMOH, 17 rue des Martyrs, F-38054 Grenoble Cedex 9, France
- CNRS, SPrAM, F-38054 Grenoble Cedex 9, France
| | - Marie Carrière
- Université Grenoble Alpes, INAC-SyMMES, F-38054 Grenoble Cedex 9, France
- CEA, INAC-SyMMES-CIBEST/LAN, 17 rue des Martyrs, F-38054 Grenoble Cedex 9, France
| | - Christophe Lincheneau
- Université Grenoble Alpes, INAC-SyMMES, F-38054 Grenoble Cedex 9, France
- CEA, INAC-SyMMES-STEP/LEMOH, 17 rue des Martyrs, F-38054 Grenoble Cedex 9, France
- CNRS, SPrAM, F-38054 Grenoble Cedex 9, France
| | - Louis Vaure
- Université Grenoble Alpes, INAC-SyMMES, F-38054 Grenoble Cedex 9, France
- CEA, INAC-SyMMES-STEP/LEMOH, 17 rue des Martyrs, F-38054 Grenoble Cedex 9, France
- CNRS, SPrAM, F-38054 Grenoble Cedex 9, France
| | - Sudarsan Tamang
- Department
of Chemistry, Sikkim University, Sikkim 737102, India
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