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Paul R, Boruah A, Das R, Chakraborty S, Chahal K, Deka DJ, Peter SC, Mai BK, Mondal J. Pyrolysis Free Out-of-Plane Co-Single Atomic Sites in Porous Organic Photopolymer Stimulates Solar-Powered CO 2 Fixation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2305307. [PMID: 37926775 DOI: 10.1002/smll.202305307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 10/11/2023] [Indexed: 11/07/2023]
Abstract
Herein, a facile strategy is illustrated to develop pyrolysis-free out-of-plane coordinated single atomic sites-based M-POP via a one-pot Friedel Craft acylation route followed by a post-synthetic metalation. The optimized geometry of the Co@BiPy-POP clearly reveals the presence of out-of-plane Co-single atomic sites in the porous backbone. This novel photopolymer Co@BiPy-POP shows extensive π-conjugations followed by impressive light harvesting ability and is utilized for photochemical CO2 fixation to value-added chemicals. A remarkable conversion of styrene epoxide (STE) to styrene carbonate (STC) (≈98%) is obtained under optimized photocatalytic conditions in the existence of promoter tert-butyl ammonium bromide (TBAB). Synchrotron-based X-ray adsorption spectroscopy (XAS) analysis reveals the single atom coordination sites along with the metal (Co) oxidation number of +2.16 in the porous network. Moreover, in situ diffuse reflectance spectroscopy (DRIFTS) and electron paramagnetic resonance (EPR) investigations provide valuable information on the evolution of key reaction intermediates. Comprehensivecomputational analysis also helps to understand the overall mechanistic pathway along with the interaction between the photocatalyst and reactants. Overall, this study presents a new concept of fabricating porous photopolymers based on a pyrolysis-free out-of-plane-coordination strategy and further explores the role of single atomic sites in carrying out feasible CO2 fixation reactions.
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Affiliation(s)
- Ratul Paul
- Department of Catalysis and Fine Chemicals, CSIR- Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201001, India
| | - Ankita Boruah
- Department of Catalysis and Fine Chemicals, CSIR- Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201001, India
| | - Risov Das
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
| | - Subhajit Chakraborty
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
| | - Kapil Chahal
- Department of Catalysis and Fine Chemicals, CSIR- Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201001, India
| | - Dhruba Jyoti Deka
- Department of Catalysis and Fine Chemicals, CSIR- Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201001, India
| | - Sebastian C Peter
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
| | - Binh Khanh Mai
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - John Mondal
- Department of Catalysis and Fine Chemicals, CSIR- Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201001, India
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McCarver GA, Yildirim T, Zhou W. Hetero-bimetallic paddlewheel complexes for enhanced CO 2 reduction selectivity in MOFs: a first principles study. Phys Chem Chem Phys 2024; 26:7627-7637. [PMID: 38363117 DOI: 10.1039/d3cp05694e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
The reduction of carbon dioxide (CO2) into value-added feedstock materials, fine chemicals, and fuels represents a crucial approach for meeting contemporary chemical demands while reducing dependence on petrochemical sources. Optimizing catalysts for the CO2 reduction reaction (CO2RR) can entail employing first principles methodology to identify catalysts possessing desirable attributes, including the ability to form diverse products or selectively produce a limited set of products, or exhibit favorable reaction kinetics. In this study, we investigate CO2RR on bimetallic Cu-based paddlewheel complexes, aiming to understand the impact metal substitution with Mn(II), Co(II), or Ni(II) has on bimetallic paddlewheel metal-organic frameworks. Substituting one of the Cu sites of the paddlewheel complex with Mn results in a more catalytically active Cu center, poised to produce substantial quantities of formic acid (HCOOH) and smaller quantities of methane (CH4) with a suppressed production of C2 products such as ethanol (CH3CH2OH) or ethylene (C2H4). Moreover, the presence of Mn significantly reduces the limiting potential for CO2 reduction from 2.22 eV on the homo-bimetallic Cu paddlewheel complex to 1.19 eV, thereby necessitating a smaller applied potential. Conversely, within the Co-substituted paddlewheel complex, the Co site emerges as the primary catalytic center, selectively yielding CH4 as the sole reduced CO2 product, with a limiting potential of 1.22 eV. Notably, the Co site faces significant competition from H2 production due to a lower limiting potential of 0.81 eV for hydrogen reduction. Our examination of the Cu-Ni paddlewheel complex, featuring a Ni substituent site, reveals two catalytically active centers, each promoting distinct reductive processes. Both the Ni and Cu sites exhibit a propensity for HCOOH formation, with the Ni site favoring further reduction to CH4, whereas the Cu site directs the reaction towards methanol (CH3OH) production. This study holds significance in informing and streamlining future experimental efforts for synthesizing and evaluating novel catalysts with superior capabilities for CO2 reduction.
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Affiliation(s)
- Gavin A McCarver
- National Institute of Standards and Technology, Center for Neutron Research, Gaithersburg, Maryland 20899-6102, USA.
| | - Taner Yildirim
- National Institute of Standards and Technology, Center for Neutron Research, Gaithersburg, Maryland 20899-6102, USA.
| | - Wei Zhou
- National Institute of Standards and Technology, Center for Neutron Research, Gaithersburg, Maryland 20899-6102, USA.
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Polidoro D, Perosa A, Rodríguez-Castellón E, Canton P, Castoldi L, Rodríguez-Padrón D, Selva M. Metal-Free N-Doped Carbons for Solvent-Less CO 2 Fixation Reactions: A Shrimp Shell Valorization Opportunity. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2022; 10:13835-13848. [PMID: 36845462 PMCID: PMC9942530 DOI: 10.1021/acssuschemeng.2c04443] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/20/2022] [Indexed: 06/17/2023]
Abstract
High anthropogenic CO2 emissions are among the main causes of climate change. Herein, we investigate the use of CO2 for the synthesis of organic cyclic carbonates on metal-free nitrogen-doped carbon catalysts obtained from chitosan, chitin, and shrimp shell wastes, both in batch and in continuous flow (CF). The catalysts were characterized by N2 physisorption, CO2-temperature-programmed desorption, X-ray photoelectron spectroscopy, scanning electron microscopy, and CNHS elemental analysis, and all reactivity tests were run in the absence of solvents. Under batch conditions, the catalyst obtained by calcination of chitin exhibited excellent performance in the conversion of epichlorohydrin (selected as a model epoxide), resulting in the corresponding cyclic carbonate with 96% selectivity at complete conversion, at 150 °C and 30 bar CO2, for 4 h. On the other hand, in a CF regime, a quantitative conversion and a carbonate selectivity >99% were achieved at 150 °C, by using the catalyst obtained from shrimp waste. Remarkably, the material displayed an outstanding stability over a reaction run time of 180 min. The robustness of the synthetized catalysts was confirmed by their good operational stability and reusability: ca. (75 ± 3)% of the initial conversion was achieved/retained by all systems, after six recycles. Also, additional batch experiments proved that the catalysts were successful on different terminal and internal epoxides.
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Affiliation(s)
- Daniele Polidoro
- Dipartimento
di Scienze Molecolari e Nanosistemi, Università
Ca’ Foscari di Venezia, 30123 Venezia, Italy
| | - Alvise Perosa
- Dipartimento
di Scienze Molecolari e Nanosistemi, Università
Ca’ Foscari di Venezia, 30123 Venezia, Italy
| | - Enrique Rodríguez-Castellón
- Department
of Inorganic Chemistry, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos s/n, 29071 Málaga, Spain
| | - Patrizia Canton
- Dipartimento
di Scienze Molecolari e Nanosistemi, Università
Ca’ Foscari di Venezia, 30123 Venezia, Italy
| | - Lidia Castoldi
- Laboratory
of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156 Milano, Italy
| | - Daily Rodríguez-Padrón
- Dipartimento
di Scienze Molecolari e Nanosistemi, Università
Ca’ Foscari di Venezia, 30123 Venezia, Italy
| | - Maurizio Selva
- Dipartimento
di Scienze Molecolari e Nanosistemi, Università
Ca’ Foscari di Venezia, 30123 Venezia, Italy
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Jiang C, Wang X, Ouyang Y, Lu K, Jiang W, Xu H, Wei X, Wang Z, Dai F, Sun D. Recent advances in metal-organic frameworks for gas adsorption/separation. NANOSCALE ADVANCES 2022; 4:2077-2089. [PMID: 36133454 PMCID: PMC9418345 DOI: 10.1039/d2na00061j] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/22/2022] [Indexed: 06/16/2023]
Abstract
The unique structural advantage of metal-organic frameworks (MOFs) determines the great prospect and developability in gas adsorption and separation. Both ligand design and microporous engineering based on crystal structure are significant lever for coping with new application exploration and requirements. Focusing on the designable pore and modifiable frameworks of MOFs, this review discussed the recent advances in the field of gas adsorption and separation, and analyzed the host-guest interaction, structure-performance relations, and the adsorption/separation mechanism from ligand design, skeleton optimization, metal node regulation, and active sites construction. Based on the function-oriented perspective, we summarized the main research recently, and made an outlook based on the focus of microporous MOFs that require further attention in the structure design and industrial application.
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Affiliation(s)
- Chuanhai Jiang
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China) Qingdao Shandong 266580 China
| | - Xiaokang Wang
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China) Qingdao Shandong 266580 China
| | - Yuguo Ouyang
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China) Qingdao Shandong 266580 China
| | - Kebin Lu
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China) Qingdao Shandong 266580 China
| | - Weifeng Jiang
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China) Qingdao Shandong 266580 China
| | - Huakai Xu
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China) Qingdao Shandong 266580 China
| | - Xiaofei Wei
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China) Qingdao Shandong 266580 China
| | - Zhifei Wang
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China) Qingdao Shandong 266580 China
| | - Fangna Dai
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China) Qingdao Shandong 266580 China
| | - Daofeng Sun
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China) Qingdao Shandong 266580 China
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