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Li F, Liao B, Shen J, Ke J, Zhang R, Wang Y, Niu Y. Enhancing Photocatalytic Activities for Sustainable Hydrogen Evolution on Structurally Matched CuInS 2/ZnIn 2S 4 Heterojunctions. Molecules 2024; 29:2447. [PMID: 38893323 PMCID: PMC11173830 DOI: 10.3390/molecules29112447] [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: 04/11/2024] [Revised: 05/14/2024] [Accepted: 05/17/2024] [Indexed: 06/21/2024] Open
Abstract
Effective charge separation and migration pose a critical challenge in the field of solar-driven hydrogen production. In this work, a Z-scheme structured CuInS2/ZnIn2S4 heterojunction was successfully fabricated through a two-step hydrothermal synthesis method to significantly enhance the efficiency of solar-to-hydrogen energy conversion. Structural characterization revealed that the lattice-matched CuInS2/ZnIn2S4 heterojunction exhibits an enlarged interfacial contact area, which facilitates the transfer and separation of photogenerated charges. Microscopic analysis indicated that the CuInS2/ZnIn2S4 composite material has a tightly interwoven interface and a morphology resembling small sugar cubes. Photoelectrochemical spectroscopy analysis demonstrated that the heterojunction structure effectively enhances visible light absorption and charge separation efficiency, leading to an improvement in photocatalytic activity. Hydrogen production experimental data indicated that the CuInS2/ZnIn2S4 heterojunction photocatalyst prepared with a CuInS2 content of 20 wt% exhibits the highest hydrogen evolution rate, reaching 284.9 μmol·g-1·h-1. Moreover, this photocatalyst maintains robust photocatalytic stability even after three consecutive usage cycles. This study demonstrated that the Z-scheme CuInS2/ZnIn2S4 heterojunction photocatalyst exhibits enhanced hydrogen evolution efficiency, offering an effective structural design for harnessing solar energy to obtain hydrogen fuel. Therefore, this heterojunction photocatalyst is a promising candidate for practical applications in solar hydrogen production.
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Affiliation(s)
- Fuying Li
- School of Resources & Chemical Engineering, Sanming University, Sanming 365004, China; (F.L.)
- Institute of Engineering and Technology Management, Krirk University, Bangkok 10220, Thailand
| | - Boiyee Liao
- Institute of Engineering and Technology Management, Krirk University, Bangkok 10220, Thailand
| | - Jinni Shen
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350007, China
| | - Junni Ke
- School of Resources & Chemical Engineering, Sanming University, Sanming 365004, China; (F.L.)
| | - Rongxin Zhang
- School of Resources & Chemical Engineering, Sanming University, Sanming 365004, China; (F.L.)
| | - Yueqi Wang
- Fujian Universities Engineering Research Center of Reactive Distillation Technology, Fuzhou University, Fuzhou 350007, China
| | - Yu Niu
- School of Resources & Chemical Engineering, Sanming University, Sanming 365004, China; (F.L.)
- Institute of Engineering and Technology Management, Krirk University, Bangkok 10220, Thailand
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Taufik A, Saleh R, Seong G. Enhanced photocatalytic performance of SnS 2 under visible light irradiation: strategies and future perspectives. NANOSCALE 2024; 16:9680-9709. [PMID: 38712924 DOI: 10.1039/d4nr00706a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Tin(II) sulfide (SnS2) has emerged as a promising candidate for visible light photocatalytic materials. As a member of the transition metal dichalcogenides (TMDs) family, SnS2 features a band gap of approximately 2.20 eV and a layered structure, rendering it suitable for visible light activation with a high specific surface area. However, the application of SnS2 as a visible light photocatalyst still requires improvement, particularly in addressing the high recombination of electrons and holes, as well as the poor selectivity inherent in its perfect crystal structure. Therefore, ongoing research focuses on strategies to enhance the photocatalytic performance of SnS2. In this comprehensive review, we analyze recent advances and promising strategies for improving the photocatalytic performance of SnS2. Various successful approaches have been reported, including controlling the reactive facets of SnS2, inducing defects in the crystal structure, manipulating morphologies, depositing noble metals, and forming heterostructures. We provide a detailed understanding of these phenomena and the preparation techniques involved, as well as future considerations for exploring new science in SnS2 photocatalysis and optimizing performance.
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Affiliation(s)
- Ardiansyah Taufik
- WPI - Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan.
| | - Rosari Saleh
- Departement Fisika, FMIPA Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia
- Integrated Laboratory of Energy and Environment FMIPA Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia
| | - Gimyeong Seong
- Department of Environmental and Energy Engineering, The University of Suwon, 17, Wauan-gil, Bongdam-eup, Hwaseong-si, Gyeonggi-do, 18323, Republic of Korea
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Yang L, Guo J, Chen S, Li A, Tang J, Guo N, Yang J, Zhang Z, Zhou J. Tailoring the catalytic sites by regulating photogenerated electron/hole pairs separation spatially for simultaneous selective oxidation of benzyl alcohol and hydrogen evolution. J Colloid Interface Sci 2024; 659:776-787. [PMID: 38215614 DOI: 10.1016/j.jcis.2024.01.022] [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: 12/01/2023] [Revised: 12/24/2023] [Accepted: 01/04/2024] [Indexed: 01/14/2024]
Abstract
Photocatalytic selective oxidation of alcohols into aldehydes and H2 is a green strategy for obtaining both value-added chemicals and clean energy. Herein, a dual-purpose ZnIn2S4@CdS photocatalyst was designed and constructed for efficient catalyzing benzyl alcohol (BA) into benzaldehyde (BAD) with coupled H2 evolution. To address the deep-rooted problems of pure CdS, such as high recombination of photogenerated carriers and severe photo-corrosion, while also preserving its superiority in H2 production, ZnIn2S4 with a suitable band structure and adequate oxidizing capability was chosen to match CdS by constructing a coupled reaction. As designed, the photoexcited holes (electrons) in the CdS (ZnIn2S4) were spatially separated and transferred to the ZnIn2S4 (CdS) by electrostatic pull from the built-in electric field, leading to expected BAD production (12.1 mmol g-1 h-1) at the ZnIn2S4 site and H2 generation (12.2 mmol g-1 h-1) at the CdS site. This composite photocatalyst also exhibited high photostability due to the reasonable hole transfer from CdS to ZnIn2S4. The experimental results suggest that the photocatalytic transform of BA into BAD on ZnIn2S4@CdS is via a carbon-centered radical mechanism. This work may extend the design of advanced photocatalysts for more chemicals by replacing H2 evolution with N2 fixation or CO2 reduction in the coupled reactions.
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Affiliation(s)
- Lifang Yang
- College of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453003, PR China.
| | - Jiao Guo
- College of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453003, PR China
| | - Siyan Chen
- College of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453003, PR China
| | - Aoqi Li
- College of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453003, PR China
| | - Jun Tang
- College of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453003, PR China
| | - Ning Guo
- College of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453003, PR China
| | - Jie Yang
- College of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453003, PR China
| | - Zizhong Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment, Research Institute of Photocatalysis, College of Chemistry, Fuzhou University, Fuzhou 350108, PR China.
| | - Jianwei Zhou
- College of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453003, PR China
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Cao J, Liu S, Wu J, Ding B, Mao L, Zhang L, Zheng S, Zhang J. Construction of a novel S-type γ-Bi 2O 3/CeO 2 heterojunction for highly efficient photocatalytic degradation of antibiotics. Phys Chem Chem Phys 2024; 26:10243-10253. [PMID: 38497485 DOI: 10.1039/d3cp03990k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Cubic nanoparticles of CeO2 were partly covered on the tetrahedron surface of γ-Bi2O3 through a hydrothermal reaction and then a calcination process to construct a novel S-type γ-Bi2O3/CeO2 heterojunction. The optimized sample removed 96% of lomefloxacin and 81% of tetracycline. During the cycling test, the photocatalytic efficiency of lomefloxacin and tetracycline was maintained above 87% and 80%, respectively, for five consecutive cycles. According to XRD and Raman spectra characterization, the sample after cycling held a stable crystal structure. Holes, OH-˙, O2˙, and electrons participated in the degradation of lomefloxacin, while tetracycline was removed via the effect of the former three active substances. Based on theoretical calculation and experimental tests, the excellent photocatalytic activity of γ-Bi2O3/CeO2 came from the fast transfer of charge carriers along the S-type path. Moreover, the CB electrons of γ-Bi2O3 and VB holes of CeO2 were preserved to generate free radicals for antibiotic degradation. The colony numbers of Escherichia coli were 1.50 × 10-6 CFU mL-1 and 1.39 × 10-6 CFU mL-1 in solutions after the degradation of the two pollutants, which represents the non-toxicity of the final products. The γ-Bi2O3/CeO2 sample has a potential application for antibiotic removal from modern sewage.
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Affiliation(s)
- Jun Cao
- Key Laboratory of Brain-like Neuromorphic Devices and Systems of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding 071002, China.
| | - Shuai Liu
- Key Laboratory of Brain-like Neuromorphic Devices and Systems of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding 071002, China.
| | - Jiawei Wu
- Key Laboratory of Brain-like Neuromorphic Devices and Systems of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding 071002, China.
| | - Bangfu Ding
- Key Laboratory of Brain-like Neuromorphic Devices and Systems of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding 071002, China.
| | - Liang Mao
- School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - Lei Zhang
- Key Laboratory of Brain-like Neuromorphic Devices and Systems of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding 071002, China.
| | - Shukai Zheng
- Key Laboratory of Brain-like Neuromorphic Devices and Systems of Hebei Province, College of Electron and Information Engineering, Hebei University, Baoding 071002, China.
| | - Junying Zhang
- School of Physics, Beihang University, Beijing 100191, China
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Gnanaguru MVL, Parida VK, Ghangrekar MM, Gupta AK, Chowdhury S. Insights into the performance of binary heterojunction photocatalysts for degradation of refractory pollutants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:11349-11370. [PMID: 38180651 DOI: 10.1007/s11356-023-31592-4] [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: 10/23/2023] [Accepted: 12/12/2023] [Indexed: 01/06/2024]
Abstract
The uncontrolled discharge of industry- and consumer-derived micropollutants and synthetic contaminants into freshwater bodies represents a severe threat to human health and aquatic ecosystem. Inexpensive and highly efficient wastewater treatment methods are, therefore, urgently required to eliminate such non-biodegradable, recalcitrant, and toxic organic pollutants. In this context, advanced oxidation processes, particularly heterogenous photocatalysis, have received enormous attention over the past few decades. Among the different classes of photocatalysts explored by the scientific community, heterojunction photocatalysts, in general, and binary heterojunction photocatalysts, in particular, have shown tremendous promise, attributed to their many distinct advantages. As such, the present review highlights the application of diverse array of binary heterojunction photocatalysts for eliminating water-borne contaminants. Specifically, a bibliometric analysis has been conducted to identify the ongoing research trend and future prospects of heterojunction photocatalysts. It appears that metal oxide/metal oxide-based heterojunctions have superior thermal and mechanical stability compared to other heterojunction photocatalysts. In contrast, metal oxide/non-metal semiconductor-based heterojunctions are extremely effective in pollutant degradation without significant leaching of metal ions. The review concludes by proposing novel strategic research guidelines in order to make further advances in this rapidly evolving cross-disciplinary field of topical interest.
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Affiliation(s)
- Mario Vino Lincy Gnanaguru
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Vishal Kumar Parida
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Makarand M Ghangrekar
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Ashok Kumar Gupta
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Shamik Chowdhury
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
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Fu X, Zhou G, Li J, Yao Q, Han Z, Yang R, Chen X, Wang Y. Critical review on modified floating photocatalysts for emerging contaminants removal from landscape water: problems, methods and mechanism. CHEMOSPHERE 2023; 341:140043. [PMID: 37660787 DOI: 10.1016/j.chemosphere.2023.140043] [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: 05/22/2023] [Revised: 07/13/2023] [Accepted: 08/31/2023] [Indexed: 09/05/2023]
Abstract
Due to the disorderly discharge in modern production and daily life of people, emerging contaminants(ECs) began to appear in landscape water, and have become a key public concern. Because of the unique characteristics of landscape water, it is difficult to efficiently remove ECs either by natural purification or by traditional large-scale sewage treatment facilities. The ideal purification method is to remove them while maintaining a beautiful environment. Possessing the feature of low-density, floating photocatalysts could harvest sufficient light on the surface of the water for photocatalytic degradation, which may be an important supplement for ECs treatment in landscape water. This paper gave a review related to floating photocatalysts and proposed an idea of combining floating photocatalysts to construct bionic photocatalytic materials for contaminative landscape water treatment. Six types of common floating substrates and corresponding applications for floating photocatalysts were concluded in this paper, and the main problem leading to the low efficiency of photocatalysts and three corresponding three improvement strategies were discussed. Besides, the modification mechanisms of photocatalysts were discussed thoroughly. On this basis, the engineering application prospects of bionic photocatalytic materials were proposed to remove ECs in landscape water.
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Affiliation(s)
- Xiaoning Fu
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Guangzhu Zhou
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Jianping Li
- China Testing & Certification International Group Qingdao Jingcheng Testing Co., Ltd., Qingdao, 266426, China.
| | - Qiuhui Yao
- The Third Exploration Team, Shandong Bureau of Coal Geology, Tai'an, 271000, China.
| | - Zuozhen Han
- Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Rongchao Yang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Xi Chen
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
| | - Yuanhao Wang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China.
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Ranjith KS, Ghoreishian SM, Umapathi R, Raju GSR, Lee HU, Huh YS, Han YK. WS 2-intercalated Ti 3C 2T x MXene/TiO 2-stacked hybrid structure as an excellent sonophotocatalyst for tetracycline degradation and nitrogen fixation. ULTRASONICS SONOCHEMISTRY 2023; 100:106623. [PMID: 37832252 PMCID: PMC10585321 DOI: 10.1016/j.ultsonch.2023.106623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 09/21/2023] [Accepted: 09/24/2023] [Indexed: 10/15/2023]
Abstract
Designing a heterostructure nanoscale catalytic site to facilitate N2 adsorption and photogenerated electron transfer would maximize the potential for photocatalytic activity and N2 reduction reactions. Herein, we have explored the interfacial TiO2 nanograins between the Ti3C2TxMXene-WS2 heterostructure and addressed the beneficial active sites to expand the effective charge transfer rate and promote sonophotocatalytic N2 fixation. Benefiting from the interfacial contact and dual heterostructure interface maximizes the photogenerated carrier separation between WS2 and MXene/TiO2. The sonophotocatalytic activity of the MXene@TiO2/WS2 hybrid, which was assessed by examining the photoreduction of N2 with ultrasonic irradiation, was much higher than that of either sonocatalytic and photocatalytic activity because of the synergistic sonocatalytic effect under photoirradiation. The Schottky junction between the MXene and TiO2 on the hybrid MXene/TiO2-WS2 heterostructure resulted in the sonophotocatalytic performance through effective charge transfer, which is 1.47 and 1.24 times greater than MXene-WS2 for nitrogen fixation and pollutant degradation, respectively. Under the sonophotocatalytic process, the MXene/TiO2-WS2 heterostructure exhibits a decomposition efficiency of 98.9 % over tetracycline in 90 min, which is 5.46, 1.73, and 1.10 times greater than those of sonolysis, sonocatalysis, and photocatalysis, respectively. The production rate of NH3 on MXene/TiO2-WS2 reached 526 μmol g-1h-1, which is 3.17, 3.61, and 1.47 times higher than that of MXene, WS2, and MXene-WS2, respectively. The hybridized structure of MXene-WS2 with interfacial surface oxidized TiO2 nanograins minimizes the band potential and improves photocarrier use efficiency, contributing directly to the remarkable catalytic performance towards N2 photo fixation under visible irradiation under ultrasonic irradiation. This report provides the strategic outcome for the mass carrier transfer rate and reveals a high conversion efficiency in the hybridized heterostructure.
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Affiliation(s)
| | | | - Reddicherla Umapathi
- Department of Biological Sciences and Bioengineering, Nano Bio High-Tech Materials Research Center, Inha University, Incheon 22212, South Korea
| | - Ganji Seeta Rama Raju
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, South Korea
| | - Hyun Uk Lee
- Division of Material Analysis and Research, Korea Basic Science Institute, Daejeon 34133, South Korea
| | - Yun Suk Huh
- Department of Biological Sciences and Bioengineering, Nano Bio High-Tech Materials Research Center, Inha University, Incheon 22212, South Korea.
| | - Young-Kyu Han
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, South Korea.
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Koshevoy E, Gribov E, Polskikh D, Lyulyukin M, Solovyeva M, Cherepanova S, Kozlov D, Selishchev D. Photoelectrochemical Methods for the Determination of the Flat-Band Potential in Semiconducting Photocatalysts: A Comparison Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:13466-13480. [PMID: 37696112 DOI: 10.1021/acs.langmuir.3c01158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
In addition to the band gap of a semiconducting photocatalyst, its band edges are important because they play a crucial role in the analysis of charge transfer and possible pathways of the photocatalytic reaction. The Mott-Schottky method using electrochemical impedance spectroscopy is the most common experimental technique for the determination of the electron potential in photocatalysts. This method is well suited for large crystals, but in the case of nanocatalysts, when the thickness of the charged layer is comparable with the size of the nanocrystals, the capacitance of the Helmholtz layer can substantially affect the measured potential. A contact between the electrolyte and the substrate, used for deposition of the photocatalyst, also affects the impedance. Application of other photoelectrochemical methods may help to avoid concerns in the interpretation of impedance data and improve the reliability of measurements. In this study, we have successfully prepared five visible-light active photocatalysts (i.e., N-doped TiO2, WO3, Bi2WO6, CoO, and g-C3N4) and measured their flat-band potentials using four (photo)electrochemical methods. The potentials are compared for all methods and discussed regarding the type of semiconducting material and its properties. The effect of methanol as a sacrificial agent for the enhanced transfer of charge carriers is studied and discussed for each method.
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Affiliation(s)
- Evgeny Koshevoy
- Boreskov Institute of Catalysis, Lavrentieva 5, Novosibirsk 630090, Russia
| | - Evgeny Gribov
- Boreskov Institute of Catalysis, Lavrentieva 5, Novosibirsk 630090, Russia
| | - Danil Polskikh
- Boreskov Institute of Catalysis, Lavrentieva 5, Novosibirsk 630090, Russia
| | - Mikhail Lyulyukin
- Boreskov Institute of Catalysis, Lavrentieva 5, Novosibirsk 630090, Russia
| | - Maria Solovyeva
- Boreskov Institute of Catalysis, Lavrentieva 5, Novosibirsk 630090, Russia
| | | | - Denis Kozlov
- Boreskov Institute of Catalysis, Lavrentieva 5, Novosibirsk 630090, Russia
| | - Dmitry Selishchev
- Boreskov Institute of Catalysis, Lavrentieva 5, Novosibirsk 630090, Russia
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