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Sessa F, Della Pietra M, Mataloni S, Muñoz-García AB, Pavone M. Structure and dynamics of Li 1.24K 0.76CO 3 molten carbonate electrolyte from molecular simulations with explicit polarization. Phys Chem Chem Phys 2024. [PMID: 38712901 DOI: 10.1039/d4cp00805g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Molten carbonate electrolysis cells represent a key technology for harnessing surplus energy from renewable sources and converting it into gaseous energy carriers. To optimize their efficiency, a comprehensive understanding of each step in the operational process is essential. Here, we focus on the electrolyte of choice in molten carbonate cells: the Li1.24K0.76CO3 melt. Utilizing molecular dynamics with explicit polarization, we demonstrate that the structure of this molten mixture is characterized by a dense network of lithium-carbonate complexes, with K+ ions loosely embedded within this network. This structural insight enables us to rationalize from an atomistic perspective the conductivity trends observed experimentally in molten carbonates. Moreover, our work highlights the importance of including polarization for the simulations of dense liquid carbonates. It also acts as a foundational step towards more advanced theoretical studies for elucidating the role of the electrolyte in these devices.
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Affiliation(s)
- Francesco Sessa
- Department of Chemical Sciences, Università di Napoli "Federico II", Compl. Univ. Monte Sant'Angelo, via Cintia 21, 80126, Napoli, Italy.
- National Reference Centre for Electrochemical Energy Storage (GISEL) - INSTM, Via Giusti 9, 50121 Florence, Italy
| | | | - Simone Mataloni
- ENEA, R. C. Casaccia, TERIN-PSU-ABI, Via Anguillarese 301, 00123, Rome, Italy
| | - Ana B Muñoz-García
- National Reference Centre for Electrochemical Energy Storage (GISEL) - INSTM, Via Giusti 9, 50121 Florence, Italy
- Department of Physics "Ettore Pancini", Università di Napoli "Federico II", Compl. Univ. Monte Sant'Angelo, via Cintia 21, 80126, Napoli, Italy
| | - Michele Pavone
- Department of Chemical Sciences, Università di Napoli "Federico II", Compl. Univ. Monte Sant'Angelo, via Cintia 21, 80126, Napoli, Italy.
- National Reference Centre for Electrochemical Energy Storage (GISEL) - INSTM, Via Giusti 9, 50121 Florence, Italy
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Sugathan V, Liu M, Pecoraro A, Das TK, Ruoko TP, Grandhi GK, Manna D, Ali-Löytty H, Lahtonen K, Muñoz-García AB, Pavone M, Vivo P. Halide Engineering in Mixed Halide Perovskite-Inspired Cu 2AgBiI 6 for Solar Cells with Enhanced Performance. ACS Appl Mater Interfaces 2024; 16:19026-19038. [PMID: 38569595 DOI: 10.1021/acsami.4c02406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
Cu2AgBiI6 (CABI) is a promising perovskite-inspired absorber for solar cells due to its direct band gap and high absorption coefficient. However, the nonradiative recombination caused by the high extrinsic trap density limits the performance of CABI-based solar cells. In this work, we employ halide engineering by doping bromide anions (Br-) in CABI thin films, in turn significantly improving the power conversion efficiency (PCE). By introducing Br- in the synthetic route of CABI thin films, we identify the optimum composition as CABI-10Br (with 10% Br at the halide site). The tailored composition appears to reduce the deep trap density as shown by time-resolved photoluminescence and transient absorption spectroscopy characterizations. This leads to a dramatic increase in the lifetime of charge carriers, which therefore improves both the external quantum efficiency and the integrated short-circuit current. The photovoltaic performance shows a significant boost since the PCE under standard 1 sun illumination increases from 1.32 to 1.69% (∼30% relative enhancement). Systematic theoretical and experimental characterizations were employed to investigate the effect of Br- incorporation on the optoelectronic properties of CABI. Our results highlight the importance of mitigating trap states in lead-free perovskite-inspired materials and that Br- incorporation at the halide site is an effective strategy for improving the device performance.
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Affiliation(s)
- Vipinraj Sugathan
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere FI-33014, Finland
| | - Maning Liu
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere FI-33014, Finland
| | - Adriana Pecoraro
- Department of Physics "Ettore Pancini", University of Naples Federico II, Comp. Univ. Monte Sant'Angelo, Naples 80126, Italy
| | - T Kumar Das
- Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Tero-Petri Ruoko
- Smart Photonic Materials, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere FI-33101, Finland
| | - G Krishnamurthy Grandhi
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere FI-33014, Finland
| | - Debjit Manna
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere FI-33014, Finland
| | - Harri Ali-Löytty
- Surface Science Group, Photonics Laboratory, Tampere University, P.O. Box 692, Tampere FI-33014, Finland
| | - Kimmo Lahtonen
- Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 692, Tampere FI-33014, Finland
| | - Ana Belén Muñoz-García
- Department of Physics "Ettore Pancini", University of Naples Federico II, Comp. Univ. Monte Sant'Angelo, Naples 80126, Italy
| | - Michele Pavone
- Department of Chemical Sciences, University of Naples Federico II, Comp. Univ. Monte Sant'Angelo, Naples 80126, Italy
| | - Paola Vivo
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere FI-33014, Finland
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Taliento C, Scutiero G, Arcieri M, Pellecchia G, Tius V, Bogani G, Petrillo M, Pavone M, Bizzarri N, Driul L, Greco P, Scambia G, Restaino S, Vizzielli G. Simple hysterectomy versus radical hysterectomy in early-stage cervical cancer: A systematic review and meta-analysis. Eur J Surg Oncol 2024; 50:108252. [PMID: 38471373 DOI: 10.1016/j.ejso.2024.108252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 02/29/2024] [Accepted: 03/04/2024] [Indexed: 03/14/2024]
Abstract
BACKGROUND This systematic review (SR) and meta-analysis aims to compare the surgery-related results and oncological outcomes between SH and RH in patients with early-stage cervical cancer. METHOD We systematically searched databases including PubMed, Embase and Cochrane to collect studies that compared oncological and surgery-related outcomes between SH and RH groups in patients with stage IA2 and IB1 cervical cancer. A random-effect model calculated the weighted average difference of each primary outcome via Review Manager V.5.4. RESULT Seven studies comprising 6977 patients were included into our study. For oncological outcomes, we found no statistical difference in recurrence rate [OR = 0.88; 95% CI (0.50, 1.57); P = 0.68] and Overall Survival (OS) [OR = 1.23; 95% CI (0.69, 2.19), P = 0.48]. No difference was detected in the prevalence of positive LVSI and lymph nodes metastasis between the two groups. Concerning surgery-related outcomes, the comprehensive effects revealed that the bladder injury [OR = 0.28; 95% CI (0.08, 0.94), P = 0.04] and bladder disfunction [OR = 0.10; 95% CI (0.02, 0.53), P = 0.007] of the RH group were higher compared to the SH group. CONCLUSION This meta-analysis suggested there are no significant differences in terms of both recurrence rate and overall survival among patients with stage IA2-IB1 cervical cancer undergoing SH or RH, while the SH group has better surgery-related outcomes. These data confirm the need to narrow the indication for RH in early-stage cervical cancer.
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Affiliation(s)
- C Taliento
- Department of Medical Sciences, Obstetrics and Gynecology Unit, University of Ferrara, Italy; Department of Development and Regeneration - Woman and Child, KU Leuven, Leuven, Belgium
| | - G Scutiero
- Department of Medical Sciences, Obstetrics and Gynecology Unit, University of Ferrara, Italy
| | - M Arcieri
- Clinic of Obstetrics and Gynecology, "Santa Maria Della Misericordia" University Hospital, Azienda Sanitaria Universitaria Friuli Centrale, Udine, Italy; Medical Area Department (DAME), University of Udine, Udine, Italy
| | - G Pellecchia
- Clinic of Obstetrics and Gynecology, "Santa Maria Della Misericordia" University Hospital, Azienda Sanitaria Universitaria Friuli Centrale, Udine, Italy; Medical Area Department (DAME), University of Udine, Udine, Italy
| | - V Tius
- Clinic of Obstetrics and Gynecology, "Santa Maria Della Misericordia" University Hospital, Azienda Sanitaria Universitaria Friuli Centrale, Udine, Italy; Medical Area Department (DAME), University of Udine, Udine, Italy
| | - G Bogani
- Gynecologic Oncology Unit, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milano, Italy
| | - M Petrillo
- Department of Obstetrics and Gynecology. University of Sassari, Sassari, Italy
| | - M Pavone
- Gynecologic Oncology Unit, Fondazione "Policlinico Universitario A. Gemelli IRCCS, Catholic University of the Sacred Heart, Rome, Italy; Institute of Image-Guided Surgery, IHU Strasbourg, Strasbourg, France
| | - N Bizzarri
- Gynecologic Oncology Unit, Fondazione "Policlinico Universitario A. Gemelli IRCCS, Catholic University of the Sacred Heart, Rome, Italy
| | - L Driul
- Clinic of Obstetrics and Gynecology, "Santa Maria Della Misericordia" University Hospital, Azienda Sanitaria Universitaria Friuli Centrale, Udine, Italy; Medical Area Department (DAME), University of Udine, Udine, Italy
| | - P Greco
- Department of Medical Sciences, Obstetrics and Gynecology Unit, University of Ferrara, Italy
| | - G Scambia
- Gynecologic Oncology Unit, Fondazione "Policlinico Universitario A. Gemelli IRCCS, Catholic University of the Sacred Heart, Rome, Italy
| | - S Restaino
- Clinic of Obstetrics and Gynecology, "Santa Maria Della Misericordia" University Hospital, Azienda Sanitaria Universitaria Friuli Centrale, Udine, Italy; Department of Obstetrics and Gynecology. University of Sassari, Sassari, Italy.
| | - G Vizzielli
- Clinic of Obstetrics and Gynecology, "Santa Maria Della Misericordia" University Hospital, Azienda Sanitaria Universitaria Friuli Centrale, Udine, Italy; Medical Area Department (DAME), University of Udine, Udine, Italy
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Corrado F, Bruno U, Prato M, Carella A, Criscuolo V, Massaro A, Pavone M, Muñoz-García AB, Forti S, Coletti C, Bettucci O, Santoro F. Author Correction: Azobenzene-based optoelectronic transistors for neurohybrid building blocks. Nat Commun 2024; 15:700. [PMID: 38267431 PMCID: PMC10808110 DOI: 10.1038/s41467-023-43621-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024] Open
Affiliation(s)
- Federica Corrado
- Institute of Biological Information Processing IBI-3 Bioelectronics, Forschungszentrum Juelich, 52428, Juelich, Germany
- Neuroelectronic Interfaces, Faculty of Electrical Engineering and IT, RWTH Aachen, 52074, Aachen, Germany
- Tissue Electronics, Center fo Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, 80125, Naples, Italy
| | - Ugo Bruno
- Tissue Electronics, Center fo Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, 80125, Naples, Italy
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, 80125, Naples, Italy
| | - Mirko Prato
- Materials Characterization Facility, Istituto Italiano di Tecnologia, 16163, Genoa, Italy
| | - Antonio Carella
- Dipartimento di Scienze Chimiche, Università degli Studi di Napoli "Federico II", Complesso Universitario Monte S. Angelo, 80126, Naples, Italy
| | - Valeria Criscuolo
- Institute of Biological Information Processing IBI-3 Bioelectronics, Forschungszentrum Juelich, 52428, Juelich, Germany
- Neuroelectronic Interfaces, Faculty of Electrical Engineering and IT, RWTH Aachen, 52074, Aachen, Germany
- Tissue Electronics, Center fo Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, 80125, Naples, Italy
| | - Arianna Massaro
- Dipartimento di Scienze Chimiche, Università degli Studi di Napoli "Federico II", Complesso Universitario Monte S. Angelo, 80126, Naples, Italy
| | - Michele Pavone
- Dipartimento di Scienze Chimiche, Università degli Studi di Napoli "Federico II", Complesso Universitario Monte S. Angelo, 80126, Naples, Italy
| | - Ana B Muñoz-García
- Dipartimento di Fisica "E. Pancini", Università degli Studi di Napoli "Federico II", Complesso Universitario Monte S. Angelo, 80126, Naples, Italy
| | - Stiven Forti
- Center for Nanotechnology Innovation, Istituto Italiano di Tecnologia, 56127, Pisa, Italy
| | - Camilla Coletti
- Center for Nanotechnology Innovation, Istituto Italiano di Tecnologia, 56127, Pisa, Italy
| | - Ottavia Bettucci
- Tissue Electronics, Center fo Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, 80125, Naples, Italy.
- Department of Materials Science and Milano-Bicocca Solar Energy Research Center - MIB-Solar, University of Milano-Bicocca, 20125, Milano, Italy.
| | - Francesca Santoro
- Institute of Biological Information Processing IBI-3 Bioelectronics, Forschungszentrum Juelich, 52428, Juelich, Germany.
- Neuroelectronic Interfaces, Faculty of Electrical Engineering and IT, RWTH Aachen, 52074, Aachen, Germany.
- Tissue Electronics, Center fo Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, 80125, Naples, Italy.
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Pecoraro A, Muñoz-García AB, Sannino GV, Veneri PD, Pavone M. Exotic hexagonal NaCl atom-thin layer on methylammonium lead iodide perovskite: new hints for perovskite solar cells from first-principles calculations. Phys Chem Chem Phys 2024; 26:1602-1607. [PMID: 38165025 DOI: 10.1039/d3cp02712k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Alkali halides are simple inorganic compounds extensively used as surface modifiers in optoelectronic devices. In perovskite solar cells (PSCs), they act as interlayers between the light absorber material and the charge selective layers improving their contact quality. They introduce surface dipoles that enable the fine tuning of the relative band alignment and passivate surface defects, a well-known drawback of hybrid organic-inorganic perovskites, that is responsible for most of the issues hampering the long-term performances. Reducing the thickness of such salt-based insulating layer might be beneficial in terms of charge transfer between the perovskite and the electron/hole transport layers. In this context, here we apply density functional theory (DFT) to characterize the structure and the electronic features of atom-thin layers of NaCl adsorbed on the methylammonium lead iodide (MAPI) perovskite. We analyze two different models of MAPI surface terminations and find unexpected structural reconstructions arising at the interface. Unexpectedly, we find an exotic honeycomb-like structuring of the salt, also recently observed in experiments on a diamond substrate. We also investigate how the salt affects the perovskite electronic properties that are key to control the charge dynamics at the interface. Moreover, we also assess the salt ability to improve the defect tolerance of the perovskite surface. With these results, we derive new hints regarding the potential benefits of using an atom-thin layer of alkali halides in PSCs.
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Affiliation(s)
- Adriana Pecoraro
- Department of Physics "E. Pancini", University of Naples Federico II, Napoli, Italy.
- INSTM-GISEL, National Interuniversity Consortium of Materials Science and Technology (INSTM), Florence, Italy.
| | - Ana B Muñoz-García
- Department of Physics "E. Pancini", University of Naples Federico II, Napoli, Italy.
- INSTM-GISEL, National Interuniversity Consortium of Materials Science and Technology (INSTM), Florence, Italy.
| | - Gennaro V Sannino
- Department of Chemical Sciences, University of Naples Federico II, Napoli, Italy
- Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici (NA), Italy
| | - Paola Delli Veneri
- Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici (NA), Italy
| | - Michele Pavone
- INSTM-GISEL, National Interuniversity Consortium of Materials Science and Technology (INSTM), Florence, Italy.
- Department of Chemical Sciences, University of Naples Federico II, Napoli, Italy
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Pavone M, Goglia M, Campolo F, Scambia G, Ianieri MM. En-block butterfly excision of posterior compartment deep endometriosis: The first experience with the new surgical robot Hugo™ RAS. Facts Views Vis Obgyn 2023; 15:359-362. [PMID: 38128095 PMCID: PMC10832646 DOI: 10.52054/fvvo.14.5.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023] Open
Abstract
Background Minimally invasive surgery is the gold standard treatment for deep endometriosis when medical management fails. In selected cases, such as when bowel or urinary tract are involved, robotic assisted surgery can be useful due to its characteristics of high dexterity and manoeuvrability. This is the first case of robotic en-bloc excision of posterior compartment deep endometriosis performed with the new HugoTM RAS system. Objective The purpose of this video article is to show for the first time the feasibility of bowel surgery for deep endometriosis with this new robotic device. Materials and Methods A 24-years-old woman affected by severe dysmenorrhea, chronic pelvic pain, dyschezia and dyspareunia underwent to deep endometriosis excision using the new robotic platform HugoTM RAS system at the Unit of Gynaecological Oncology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy. Main outcome measures Intraoperative data, docking set up, post-operative outcomes up to three months follow up were evaluated. Results The surgical procedure was carried out without intra-operative or post-operative complications, operative time (OT) was 200 minutes, while docking time was 8 minutes. No system errors or faults in the robotic arms were registered. Post-operative complete disease-related symptoms relief was reported. Conclusion According to our results, the introduction of this new robotic platform in the surgical management of deep endometriosis seems to be feasible, especially in advanced cases. However, further studies are needed to demonstrate the benefits of this surgical system and the advantages of robotic surgery compared to laparoscopy in this subset of patients.
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Corrado F, Bruno U, Prato M, Carella A, Criscuolo V, Massaro A, Pavone M, Muñoz-García AB, Forti S, Coletti C, Bettucci O, Santoro F. Azobenzene-based optoelectronic transistors for neurohybrid building blocks. Nat Commun 2023; 14:6760. [PMID: 37919279 PMCID: PMC10622443 DOI: 10.1038/s41467-023-41083-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 08/21/2023] [Indexed: 11/04/2023] Open
Abstract
Exploiting the light-matter interplay to realize advanced light responsive multimodal platforms is an emerging strategy to engineer bioinspired systems such as optoelectronic synaptic devices. However, existing neuroinspired optoelectronic devices rely on complex processing of hybrid materials which often do not exhibit the required features for biological interfacing such as biocompatibility and low Young's modulus. Recently, organic photoelectrochemical transistors (OPECTs) have paved the way towards multimodal devices that can better couple to biological systems benefiting from the characteristics of conjugated polymers. Neurohybrid OPECTs can be designed to optimally interface neuronal systems while resembling typical plasticity-driven processes to create more sophisticated integrated architectures between neuron and neuromorphic ends. Here, an innovative photo-switchable PEDOT:PSS was synthesized and successfully integrated into an OPECT. The OPECT device uses an azobenzene-based organic neuro-hybrid building block to mimic the retina's structure exhibiting the capability to emulate visual pathways. Moreover, dually operating the device with opto- and electrical functions, a light-dependent conditioning and extinction processes were achieved faithful mimicking synaptic neural functions such as short- and long-term plasticity.
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Affiliation(s)
- Federica Corrado
- Institute of Biological Information Processing IBI-3 Bioelectronics, Forschungszentrum Juelich, 52428, Juelich, Germany
- Neuroelectronic Interfaces, Faculty of Electrical Engineering and IT, RWTH Aachen, 52074, Aachen, Germany
- Tissue Electronics, Center fo Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, 80125, Naples, Italy
| | - Ugo Bruno
- Tissue Electronics, Center fo Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, 80125, Naples, Italy
- Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università degli Studi di Napoli Federico II, 80125, Naples, Italy
| | - Mirko Prato
- Materials Characterization Facility, Istituto Italiano di Tecnologia, 16163, Genoa, Italy
| | - Antonio Carella
- Dipartimento di Scienze Chimiche, Università degli Studi di Napoli "Federico II", Complesso Universitario Monte S. Angelo, 80126, Naples, Italy
| | - Valeria Criscuolo
- Institute of Biological Information Processing IBI-3 Bioelectronics, Forschungszentrum Juelich, 52428, Juelich, Germany
- Neuroelectronic Interfaces, Faculty of Electrical Engineering and IT, RWTH Aachen, 52074, Aachen, Germany
- Tissue Electronics, Center fo Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, 80125, Naples, Italy
| | - Arianna Massaro
- Dipartimento di Scienze Chimiche, Università degli Studi di Napoli "Federico II", Complesso Universitario Monte S. Angelo, 80126, Naples, Italy
| | - Michele Pavone
- Dipartimento di Scienze Chimiche, Università degli Studi di Napoli "Federico II", Complesso Universitario Monte S. Angelo, 80126, Naples, Italy
| | - Ana B Muñoz-García
- Dipartimento di Fisica "E. Pancini", Università degli Studi di Napoli "Federico II", Complesso Universitario Monte S. Angelo, 80126, Naples, Italy
| | - Stiven Forti
- Center for Nanotechnology Innovation, Istituto Italiano di Tecnologia, 56127, Pisa, Italy
| | - Camilla Coletti
- Center for Nanotechnology Innovation, Istituto Italiano di Tecnologia, 56127, Pisa, Italy
| | - Ottavia Bettucci
- Tissue Electronics, Center fo Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, 80125, Naples, Italy.
- Department of Materials Science and Milano-Bicocca Solar Energy Research Center - MIB-Solar, University of Milano-Bicocca, 20125, Milano, Italy.
| | - Francesca Santoro
- Institute of Biological Information Processing IBI-3 Bioelectronics, Forschungszentrum Juelich, 52428, Juelich, Germany.
- Neuroelectronic Interfaces, Faculty of Electrical Engineering and IT, RWTH Aachen, 52074, Aachen, Germany.
- Tissue Electronics, Center fo Advanced Biomaterials for Healthcare, Istituto Italiano di Tecnologia, 80125, Naples, Italy.
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Al-Anesi B, Grandhi GK, Pecoraro A, Sugathan V, Viswanath NSM, Ali-Löytty H, Liu M, Ruoko TP, Lahtonen K, Manna D, Toikkonen S, Muñoz-García AB, Pavone M, Vivo P. Antimony-Bismuth Alloying: The Key to a Major Boost in the Efficiency of Lead-Free Perovskite-Inspired Photovoltaics. Small 2023; 19:e2303575. [PMID: 37452442 DOI: 10.1002/smll.202303575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/22/2023] [Indexed: 07/18/2023]
Abstract
The perovskite-inspired Cu2 AgBiI6 (CABI) material has been gaining increasing momentum as photovoltaic (PV) absorber due to its low toxicity, intrinsic air stability, direct bandgap, and a high absorption coefficient in the range of 105 cm-1 . However, the power conversion efficiency (PCE) of existing CABI-based PVs is still seriously constrained by the presence of both intrinsic and surface defects. Herein, antimony (III) (Sb3+ ) is introduced into the octahedral lattice sites of the CABI structure, leading to CABI-Sb with larger crystalline domains than CABI. The alloying of Sb3+ with bismuth (III) (Bi3+ ) induces changes in the local structural symmetry that dramatically increase the formation energy of intrinsic defects. Light-intensity dependence and electron impedance spectroscopic studies show reduced trap-assisted recombination in the CABI-Sb PV devices. CABI-Sb solar cells feature a nearly 40% PCE enhancement (from 1.31% to 1.82%) with respect to the CABI devices mainly due to improvement in short-circuit current density. This work will promote future compositional design studies to enhance the intrinsic defect tolerance of next-generation wide-bandgap absorbers for high-performance and stable PVs.
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Affiliation(s)
- Basheer Al-Anesi
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - G Krishnamurthy Grandhi
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - Adriana Pecoraro
- Department of Physics "Ettore Pancini" University of Naples Federico II, Comp. Univ. Monte Sant'Angelo, Naples, 80126, Italy
| | - Vipinraj Sugathan
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | | | - Harri Ali-Löytty
- Surface Science Group, Photonics Laboratory, Tampere University, P.O. Box 692, Tampere, FI-33014, Finland
| | - Maning Liu
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - Tero-Petri Ruoko
- Smart Photonic Materials, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33101, Finland
| | - Kimmo Lahtonen
- Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 692, Tampere, FI-33014, Finland
| | - Debjit Manna
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - Sami Toikkonen
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - Ana Belén Muñoz-García
- Department of Physics "Ettore Pancini" University of Naples Federico II, Comp. Univ. Monte Sant'Angelo, Naples, 80126, Italy
| | - Michele Pavone
- Department of Chemical Sciences, University of Naples Federico II, Comp. Univ. Monte Sant'Angelo, Naples, 80126, Italy
| | - Paola Vivo
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
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9
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Brugnetti G, Triolo C, Massaro A, Ostroman I, Pianta N, Ferrara C, Sheptyakov D, Muñoz-García AB, Pavone M, Santangelo S, Ruffo R. Structural Evolution of Air-Exposed Layered Oxide Cathodes for Sodium-Ion Batteries: An Example of Ni-doped Na xMnO 2. Chem Mater 2023; 35:8440-8454. [PMID: 37901146 PMCID: PMC10601480 DOI: 10.1021/acs.chemmater.3c01196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 09/20/2023] [Indexed: 10/31/2023]
Abstract
Sodium-ion batteries have recently aroused the interest of industries as possible replacements for lithium-ion batteries in some areas. With their high theoretical capacities and competitive prices, P2-type layered oxides (NaxTMO2) are among the obvious choices in terms of cathode materials. On the other hand, many of these materials are unstable in air due to their reactivity toward water and carbon dioxide. Here, Na0.67Mn0.9Ni0.1O2 (NMNO), one of such materials, has been synthesized by a classic sol-gel method and then exposed to air for several weeks as a way to allow a simple and reproducible transition toward a Na-rich birnessite phase. The transition between the anhydrous P2 to the hydrated birnessite structure has been followed via periodic XRD analyses, as well as neutron diffraction ones. Extensive electrochemical characterizations of both pristine NMNO and the air-exposed one vs sodium in organic medium showed comparable performances, with capacities fading from 140 to 60 mAh g-1 in around 100 cycles. Structural evolution of the air-exposed NMNO has been investigated both with ex situ synchrotron XRD and Raman. Finally, DFT analyses showed similar charge compensation mechanisms between P2 and birnessite phases, providing a reason for the similarities between the electrochemical properties of both materials.
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Affiliation(s)
- Gabriele Brugnetti
- Dipartimento di Scienza dei Materiali, Università di Milano Bicocca, Milano 20125, Italy
| | - Claudia Triolo
- Dipartimento di Ingegneria Civile, dell'Energia, dell'Ambiente e dei Materiali (DICEAM), Università "Mediterranea", Via Zehender, Loc. Feo di Vito, 89122 Reggio Calabria, Italy
- National Reference Center for Electrochemical Energy Storage (GISEL), Via G. Giusti 9, Firenze 50121, Italy
- Consorzio Interuniversitario per la Scienza e Tecnologia dei Materiali (INSTM), Via G. Giusti 9, Firenze 50121, Italy
| | - Arianna Massaro
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Napoli 80126, Italy
- National Reference Center for Electrochemical Energy Storage (GISEL), Via G. Giusti 9, Firenze 50121, Italy
| | - Irene Ostroman
- Dipartimento di Scienza dei Materiali, Università di Milano Bicocca, Milano 20125, Italy
| | - Nicolò Pianta
- Dipartimento di Scienza dei Materiali, Università di Milano Bicocca, Milano 20125, Italy
| | - Chiara Ferrara
- Dipartimento di Scienza dei Materiali, Università di Milano Bicocca, Milano 20125, Italy
- National Reference Center for Electrochemical Energy Storage (GISEL), Via G. Giusti 9, Firenze 50121, Italy
- Consorzio Interuniversitario per la Scienza e Tecnologia dei Materiali (INSTM), Via G. Giusti 9, Firenze 50121, Italy
| | - Denis Sheptyakov
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Ana Belén Muñoz-García
- Dipartimento di Fisica "E. Pancini", Università di Napoli Federico II, Napoli 80126, Italy
- National Reference Center for Electrochemical Energy Storage (GISEL), Via G. Giusti 9, Firenze 50121, Italy
| | - Michele Pavone
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Napoli 80126, Italy
- National Reference Center for Electrochemical Energy Storage (GISEL), Via G. Giusti 9, Firenze 50121, Italy
| | - Saveria Santangelo
- Dipartimento di Ingegneria Civile, dell'Energia, dell'Ambiente e dei Materiali (DICEAM), Università "Mediterranea", Via Zehender, Loc. Feo di Vito, 89122 Reggio Calabria, Italy
- National Reference Center for Electrochemical Energy Storage (GISEL), Via G. Giusti 9, Firenze 50121, Italy
- Consorzio Interuniversitario per la Scienza e Tecnologia dei Materiali (INSTM), Via G. Giusti 9, Firenze 50121, Italy
| | - Riccardo Ruffo
- Dipartimento di Scienza dei Materiali, Università di Milano Bicocca, Milano 20125, Italy
- National Reference Center for Electrochemical Energy Storage (GISEL), Via G. Giusti 9, Firenze 50121, Italy
- Consorzio Interuniversitario per la Scienza e Tecnologia dei Materiali (INSTM), Via G. Giusti 9, Firenze 50121, Italy
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10
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Iqbal Z, Zu F, Musiienko A, Gutierrez-Partida E, Köbler H, Gries TW, Sannino GV, Canil L, Koch N, Stolterfoht M, Neher D, Pavone M, Muñoz-García AB, Abate A, Wang Q. Interface Modification for Energy Level Alignment and Charge Extraction in CsPbI 3 Perovskite Solar Cells. ACS Energy Lett 2023; 8:4304-4314. [PMID: 37854052 PMCID: PMC10580311 DOI: 10.1021/acsenergylett.3c01522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 09/20/2023] [Indexed: 10/20/2023]
Abstract
In perovskite solar cells (PSCs) energy level alignment and charge extraction at the interfaces are the essential factors directly affecting the device performance. In this work, we present a modified interface between all-inorganic CsPbI3 perovskite and its hole-selective contact (spiro-OMeTAD), realized by the dipole molecule trioctylphosphine oxide (TOPO), to align the energy levels. On a passivated perovskite film, with n-octylammonium iodide (OAI), we created an upward surface band-bending at the interface by TOPO treatment. This improved interface by the dipole molecule induces a better energy level alignment and enhances the charge extraction of holes from the perovskite layer to the hole transport material. Consequently, a Voc of 1.2 V and a high-power conversion efficiency (PCE) of over 19% were achieved for inorganic CsPbI3 perovskite solar cells. Further, to demonstrate the effect of the TOPO dipole molecule, we present a layer-by-layer charge extraction study by a transient surface photovoltage (trSPV) technique accomplished by a charge transport simulation.
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Affiliation(s)
- Zafar Iqbal
- Helmholtz-Zentrum
Berlin für Materialien und Energie GmbH. Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Fengshuo Zu
- Institut
für Physik & IRIS Adlershof, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
| | - Artem Musiienko
- Helmholtz-Zentrum
Berlin für Materialien und Energie GmbH. Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Emilio Gutierrez-Partida
- Institute
for Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam-Golm, Germany
| | - Hans Köbler
- Helmholtz-Zentrum
Berlin für Materialien und Energie GmbH. Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Thomas W. Gries
- Helmholtz-Zentrum
Berlin für Materialien und Energie GmbH. Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Gennaro V. Sannino
- Helmholtz-Zentrum
Berlin für Materialien und Energie GmbH. Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Department
of Physics “Ettore Pancini”, University of Naples Federico II, Comp. Univ. Monte S. Angelo, via Cintia 26, 80126 Naples, Italy
| | - Laura Canil
- Helmholtz-Zentrum
Berlin für Materialien und Energie GmbH. Hahn-Meitner-Platz 1, 14109 Berlin, Germany
| | - Norbert Koch
- Helmholtz-Zentrum
Berlin für Materialien und Energie GmbH. Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Institut
für Physik & IRIS Adlershof, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
| | - Martin Stolterfoht
- Institute
for Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam-Golm, Germany
- The
Chinese University of Hong Kong, Electronic
Engineering Department, Shatin N.T., Hong Kong 999077, People’s
Republic of China
| | - Dieter Neher
- Institute
for Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam-Golm, Germany
| | - Michele Pavone
- Department
of Chemical Sciences, University of Naples
Federico II, Comp. Univ.
Monte S. Angelo, Via Cintia 26, 80126 Naples, Italy
| | - Ana Belen Muñoz-García
- Department
of Physics “Ettore Pancini”, University of Naples Federico II, Comp. Univ. Monte S. Angelo, via Cintia 26, 80126 Naples, Italy
| | - Antonio Abate
- Helmholtz-Zentrum
Berlin für Materialien und Energie GmbH. Hahn-Meitner-Platz 1, 14109 Berlin, Germany
- Department
of Chemistry, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany
- Department
of Chemical Materials and Production Engineering, University of Naples Federico II, Piazzale Vincenzo Tecchio 80, 80125 Naples, Italy
| | - Qiong Wang
- Helmholtz-Zentrum
Berlin für Materialien und Energie GmbH. Hahn-Meitner-Platz 1, 14109 Berlin, Germany
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11
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Fasulo F, Massaro A, Muñoz-García AB, Pavone M. New Insights on Singlet Oxygen Release from Li-Air Battery Cathode: Periodic DFT Versus CASPT2 Embedded Cluster Calculations. J Chem Theory Comput 2023; 19:5210-5220. [PMID: 37433035 PMCID: PMC10413853 DOI: 10.1021/acs.jctc.3c00393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Indexed: 07/13/2023]
Abstract
Li-air batteries are a promising energy storage technology for large-scale applications, but the release of highly reactive singlet oxygen (1O2) during battery operation represents a main concern that sensibly limits their effective deployment. An in-depth understanding of the reaction mechanisms underlying the 1O2 formation is crucial to prevent its detrimental reactions with the electrolyte species. However, describing the elusive chemistry of highly correlated species such as singlet oxygen represents a challenging task for state-of-the-art theoretical tools based on density functional theory. Thus, in this study, we apply an embedded cluster approach, based on CASPT2 and effective point charges, to address the evolution of 1O2 at the Li2O2 surface during oxidation, i.e., the battery charging process. Based on recent hypothesis, we depict a feasible O22-/O2-/O2 mechanisms occurring from the (112̅0)-Li2O2 surface termination. Our highly accurate calculations allow for the identification of a stable superoxide as local minimum along the potential energy surface (PES) for 1O2 release, which is not detected by periodic DFT. We find that 1O2 release proceeds via a superoxide intermediate in a two-step one-electron process or another still accessible pathway featuring a one-step two-electron mechanism. In both cases, it represents a feasible product of Li2O2 oxidation upon battery charging. Thus, tuning the relative stability of the intermediate superoxide species can enable key strategies aiming at controlling the detrimental development of 1O2 for new and highly performing Li-air batteries.
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Affiliation(s)
- Francesca Fasulo
- Department
of Physics “E. Pancini”, University
of Naples Federico II, I-80126 Napoli, Italy
| | - Arianna Massaro
- Department
of Chemical Sciences, University of Naples
Federico II, I-80126 Napoli, Italy
| | - Ana B. Muñoz-García
- Department
of Physics “E. Pancini”, University
of Naples Federico II, I-80126 Napoli, Italy
- National
Reference Center for Electrochemical Energy Storage (GISEL)-INSTM, 50121 Florence, Italy
| | - Michele Pavone
- Department
of Chemical Sciences, University of Naples
Federico II, I-80126 Napoli, Italy
- National
Reference Center for Electrochemical Energy Storage (GISEL)-INSTM, 50121 Florence, Italy
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12
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Massaro A, Fasulo F, Pecoraro A, Langella A, Muñoz-García AB, Pavone M. First-principles design of nanostructured electrode materials for Na-ion batteries: challenges and perspectives. Phys Chem Chem Phys 2023. [PMID: 37404199 DOI: 10.1039/d3cp01201h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/06/2023]
Abstract
Post-lithium batteries are emerging as viable solutions for sustainable energy transition. Effective deployment in the market calls for great research efforts in the identification of novel component materials and the assessment of related working principles. Computational modelling can be a key player in boosting innovation and development by enabling rational strategies for the design of appropriately tuned materials with optimized activity towards battery operating processes. By gaining access to the structural and electronic features of functional electrodes, state-of-the-art DFT methods can unveil the subtle structure-property relationship that affects the uptake, transport, and storage efficiency. Hereby, we aim at reviewing the research status of theoretical advances in the field of Na-ion batteries (NIBs) and illustrating to what extent atomistic insights into sodiation/desodiation mechanisms of nanostructured materials can assist the development of effective anodes and cathodes for stable and highly performing devices. Thanks to increasing computer power and fruitful cooperation between theory and experiments, the route for effective design methodologies is being paved and will feed the upcoming developments in NIB technology.
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Affiliation(s)
- Arianna Massaro
- Department of Chemical Sciences, Università di Napoli "Federico II", Compl. Univ. Monte Sant'Angelo, via Cintia 21, 80126, Napoli, Italy.
- National Reference Centre for Electrochemical Energy Storage (GISEL) - INSTM, 50121 Florence, Italy
| | - Francesca Fasulo
- National Reference Centre for Electrochemical Energy Storage (GISEL) - INSTM, 50121 Florence, Italy
- Department of Physics "E. Pancini", Università di Napoli "Federico II", Compl. Univ. Monte Sant'Angelo, via Cintia 21, 80126, Napoli, Italy
| | - Adriana Pecoraro
- National Reference Centre for Electrochemical Energy Storage (GISEL) - INSTM, 50121 Florence, Italy
- Department of Physics "E. Pancini", Università di Napoli "Federico II", Compl. Univ. Monte Sant'Angelo, via Cintia 21, 80126, Napoli, Italy
| | - Aniello Langella
- Department of Chemical Sciences, Università di Napoli "Federico II", Compl. Univ. Monte Sant'Angelo, via Cintia 21, 80126, Napoli, Italy.
| | - Ana B Muñoz-García
- National Reference Centre for Electrochemical Energy Storage (GISEL) - INSTM, 50121 Florence, Italy
- Department of Physics "E. Pancini", Università di Napoli "Federico II", Compl. Univ. Monte Sant'Angelo, via Cintia 21, 80126, Napoli, Italy
| | - Michele Pavone
- Department of Chemical Sciences, Università di Napoli "Federico II", Compl. Univ. Monte Sant'Angelo, via Cintia 21, 80126, Napoli, Italy.
- National Reference Centre for Electrochemical Energy Storage (GISEL) - INSTM, 50121 Florence, Italy
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13
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Spinelli G, Morritt GH, Pavone M, Probert MR, Waddell PG, Edvinsson T, Muñoz-García AB, Freitag M. Conductivity in Thin Films of Transition Metal Coordination Complexes. ACS Appl Energy Mater 2023; 6:2122-2127. [PMID: 36875350 PMCID: PMC9975959 DOI: 10.1021/acsaem.2c02999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Two coordination complexes have been made by combining the dithiolene complexes [M(mnt)2]2- (mnt = maleonitriledithiolate; M = Ni2+ or Cu2+) as anion, with the copper(II) coordination complex [Cu(Stetra)] (Stetra = 6,6'-bis(4,5-dihydrothiazol-2-yl)-2,2'-bipyri-dine) as cation. The variation of the metal centers leads to a dramatic change in the conductivity of the materials, with the M = Cu2+ variant (Cu-Cu) displaying semiconductor behavior with a conductivity of approximately 2.5 × 10-8 S cm-1, while the M = Ni2+ variant (Ni-Cu) displayed no observable conductivity. Computational studies found Cu-Cu enables a minimization of reorganization energy losses and, as a result, a lower barrier to the charge transfer process, resulting in the reported higher conductivity.
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Affiliation(s)
- Giovanni Spinelli
- School
of Natural and Environmental Science, Newcastle
University, Bedson Building, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - George H. Morritt
- School
of Mathematics, Statistics and Physics, Newcastle University, Herschel Building, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Michele Pavone
- Department
of Chemical Sciences, University of Naples
Federico II, Naples 80126, Italy
| | - Michael R. Probert
- School
of Natural and Environmental Science, Newcastle
University, Bedson Building, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Paul G. Waddell
- School
of Natural and Environmental Science, Newcastle
University, Bedson Building, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Tomas Edvinsson
- Department
of Materials Science and Engineering, Division of Solid-State Physics, Uppsala University, P.O. Box 35, Uppsala SE 75103, Sweden
| | - Ana Belén Muñoz-García
- Department
of Physics “Ettore Pancini″, University of Naples Federico II, Naples 80126, Italy
| | - Marina Freitag
- School
of Natural and Environmental Science, Newcastle
University, Bedson Building, Newcastle upon Tyne NE1 7RU, United Kingdom
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14
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Pecoraro A, Fasulo F, Pavone M, Muñoz-García AB. First-principles study of interfacial features and charge dynamics between Spiro-MeOTAD and photoactive lead halide perovskites. Chem Commun (Camb) 2023; 59:5055-5058. [PMID: 37039093 DOI: 10.1039/d3cc00960b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Abstract
Main stability and performance issues of perovskite solar cells arise from the interfaces between the perovskite and the hole transport material. Here we address these interfaces by means of state-of-the-art...
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Affiliation(s)
- Adriana Pecoraro
- Department of Physics "E. Pancini", University of Naples Federico II, Napoli, Italy.
| | - Francesca Fasulo
- Department of Chemical Sciences, University of Naples Federico II, Napoli, Italy
| | - Michele Pavone
- Department of Chemical Sciences, University of Naples Federico II, Napoli, Italy
- National Reference Center for Electrochemical Energy Storage (GISEL)-INSTM, Florence, Italy
| | - Ana B Muñoz-García
- Department of Physics "E. Pancini", University of Naples Federico II, Napoli, Italy.
- National Reference Center for Electrochemical Energy Storage (GISEL)-INSTM, Florence, Italy
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15
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Pecoraro A, Maddalena P, Pavone M, Muñoz García AB. First-Principles Study of Cu-Based Inorganic Hole Transport Materials for Solar Cell Applications. Materials (Basel) 2022; 15:5703. [PMID: 36013837 PMCID: PMC9413571 DOI: 10.3390/ma15165703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/03/2022] [Accepted: 08/14/2022] [Indexed: 06/15/2023]
Abstract
Perovskite solar cells (PSCs) and dye-sensitized solar cells (DSCs) both represent promising strategies for the sustainable conversion of sunlight into electricity and fuels. However, a few flaws of current devices hinder the large-scale establishment of such technologies. On one hand, PSCs suffer from instabilities and undesired phenomena mostly linked to the perovskite/hole transport layer (HTL) interface. Most of the currently employed organic HTL (e.g., Spiro-OMeTAD) are supposed to contribute to the perovskite decomposition and to be responsible for charge recombination processes and polarization barriers. On the other hand, power conversion efficiencies (PCEs) of DSCs are still too low to compete with other conversion technologies. Tandem cells are built by assembling p-type and n-type DSCs in a cascade architecture and, since each dye absorbs on a different portion of the solar spectrum, the harvesting window is increased and the theoretical efficiency limit for a single chromophore (i.e., the Shockley-Queisser limit) is overcome. However, such a strategy is hindered by the lack of a p-type semiconductor with optimal photocathode features. Nickel oxide has been, by far, the first-choice inorganic p-type semiconductor for both PV technologies, but its toxicity and non-optimal features (e.g., too low open circuit voltage and the presence of trap states) call for alternatives. Herein, we study of three p-type semiconductors as possible alternative to NiO, namely CuI, CuSCN and Cu2O. To this aim, we compare the structural and electronic features of the three materials by means of a unified theoretical approach based on the state-of-the art density functional theory (DFT). We focus on the calculation of their valence band edge energies and compare such values with those of two widely employed photo-absorbers, i.e., methylammonium lead iodide (MAPI) and the triple cation MAFACsPbBrI in PSCs and P1 and Y123 dyes in DSCs, given that the band alignment and the energy offset are crucial for the charge transport at the interfaces and have direct implications on the final efficiency. We dissect the effect a copper vacancy (i.e., intrinsic p-type doping) on the alignment pattern and rationalize it from both a structural and an electronic perspective. Our data show how defects can represent a crucial degree of freedom to control the driving force for hole injection in these devices.
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Affiliation(s)
- Adriana Pecoraro
- Department of Physics “Ettore Pancini”, University of Naples Federico II, 80126 Napoli, Italy
| | - Pasqualino Maddalena
- Department of Physics “Ettore Pancini”, University of Naples Federico II, 80126 Napoli, Italy
| | - Michele Pavone
- Department of Chemical Sciences, University of Naples Federico II, 80126 Napoli, Italy
| | - Ana B. Muñoz García
- Department of Physics “Ettore Pancini”, University of Naples Federico II, 80126 Napoli, Italy
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16
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Rosati A, Pavone M, Campolo F, De Cicco Nardone A, Raimondo D, Serracchioli R, Scambia G, Ianieri M. Surgical and functional impact of nerve-sparing radical hysterectomy for parametrial deep endometriosis: a single centre experience. Facts Views Vis Obgyn 2022; 14:121-127. [DOI: 10.52054/fvvo.14.2.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Background: Deep endometriosis (DE) usually creates a distortion of the retroperitoneal anatomy and may infiltrate the parametria with an oncomimetic pathway similar to cervical cancer. The condition represents a severe manifestation of endometriosis that may result in a functional impairment of the inferior hypogastric plexus.
An extensive surgical resection may be required with an associated risk of increased neurogenic postoperative pelvic organ dysfunction.
Objectives: To evaluate the post-operative function and complications following hysterectomy with posterolateral parametrial resection for DE.
Materials and Methods: In total, 23 patients underwent radical hysterectomy for DE with the parametria involved. The severity of pain was assessed by the Visual Analogue Scale (VAS) score. The KESS, GQLI, BFLUTS and FSFI were used to examine the gastrointestinal, urinary and sexual functions respectively. Intra and post-operative complications were recorded.
Main outcome measures: The main outcomes were gastrointestinal, urinary and sexual function and intra and post-operative complications.
Results: Dyschezia, dyspareunia and chronic pelvic pain were significantly reduced following hysterectomy. Furthermore, an improvement of gastrointestinal function was observed, while sexual functions, examined by FSFI and urinary symptoms, examined by BFLUTS, was not shown to be significant.
Conclusion: The modified nerve-sparing radical hysterectomy for DE results in an improvement of symptoms. Nevertheless, despite the nerve-sparing approach, this procedure may be associated with a not-negligible risk of post-operative bladder voiding deficit.
What is new? This is the first study that focuses on parametrial endometriosis using validated questionnaires to assess functional outcomes following radical hysterectomy for DE.
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17
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Grisorio R, Fasulo F, Muñoz-García AB, Pavone M, Conelli D, Fanizza E, Striccoli M, Allegretta I, Terzano R, Margiotta N, Vivo P, Suranna GP. In Situ Formation of Zwitterionic Ligands: Changing the Passivation Paradigms of CsPbBr 3 Nanocrystals. Nano Lett 2022; 22:4437-4444. [PMID: 35609011 PMCID: PMC9185741 DOI: 10.1021/acs.nanolett.2c00937] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
CsPbBr3 nanocrystals (NCs) passivated by conventional lipophilic capping ligands suffer from colloidal and optical instability under ambient conditions, commonly due to the surface rearrangements induced by the polar solvents used for the NC purification steps. To avoid onerous postsynthetic approaches, ascertained as the only viable stability-improvement strategy, the surface passivation paradigms of as-prepared CsPbBr3 NCs should be revisited. In this work, the addition of an extra halide source (8-bromooctanoic acid) to the typical CsPbBr3 synthesis precursors and surfactants leads to the in situ formation of a zwitterionic ligand already before cesium injection. As a result, CsPbBr3 NCs become insoluble in nonpolar hexane, with which they can be washed and purified, and form stable colloidal solutions in a relatively polar medium (dichloromethane), even when longly exposed to ambient conditions. The improved NC stability stems from the effective bidentate adsorption of the zwitterionic ligand on the perovskite surfaces, as supported by theoretical investigations. Furthermore, the bidentate functionalization of the zwitterionic ligand enables the obtainment of blue-emitting perovskite NCs with high PLQYs by UV-irradiation in dichloromethane, functioning as the photoinduced chlorine source.
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Affiliation(s)
- Roberto Grisorio
- Dipartimento
di Ingegneria Civile, Ambientale, del Territorio, Edile e di Chimica
(DICATECh), Politecnico di Bari, Via Orabona 4, 70125 Bari, Italy
- CNR
NANOTEC − Istituto di Nanotecnologia, Via Monteroni, 73100 Lecce, Italy
- E-mail:
| | - Francesca Fasulo
- Dipartimento
di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario di Monte Sant’Angelo, Via Cintia 21, 80126 Napoli, Italy
| | - Ana Belén Muñoz-García
- Dipartimento
di Fisica “Ettore Pancini”, Università di Napoli
Federico II, Complesso Universitario di
Monte Sant’Angelo, Via Cintia 21, 80126 Napoli, Italy
| | - Michele Pavone
- Dipartimento
di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario di Monte Sant’Angelo, Via Cintia 21, 80126 Napoli, Italy
| | - Daniele Conelli
- Dipartimento
di Ingegneria Civile, Ambientale, del Territorio, Edile e di Chimica
(DICATECh), Politecnico di Bari, Via Orabona 4, 70125 Bari, Italy
| | - Elisabetta Fanizza
- Dipartimento
di Chimica, Università degli Studi
di Bari “A. Moro”, Via Orabona 4, 70126 Bari, Italy
| | - Marinella Striccoli
- CNR−Istituto
per i Processi Chimico Fisici, UOS Bari, Via Orabona 4, 70126 Bari, Italy
| | - Ignazio Allegretta
- Dipartimento
di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari “Aldo Moro”, Via G. Amendola 165/A, 70126 Bari, Italy
| | - Roberto Terzano
- Dipartimento
di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari “Aldo Moro”, Via G. Amendola 165/A, 70126 Bari, Italy
| | - Nicola Margiotta
- Dipartimento
di Chimica, Università degli Studi
di Bari “A. Moro”, Via Orabona 4, 70126 Bari, Italy
| | - Paola Vivo
- Hybrid
Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, FI-33014 Tampere, Finland
| | - Gian Paolo Suranna
- Dipartimento
di Ingegneria Civile, Ambientale, del Territorio, Edile e di Chimica
(DICATECh), Politecnico di Bari, Via Orabona 4, 70125 Bari, Italy
- CNR
NANOTEC − Istituto di Nanotecnologia, Via Monteroni, 73100 Lecce, Italy
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18
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Loreto D, Fasulo F, Muñoz-García AB, Pavone M, Merlino A. Unexpected Imidazole Coordination to the Dirhodium Center in a Protein Environment: Insights from X-ray Crystallography and Quantum Chemistry. Inorg Chem 2022; 61:8402-8405. [PMID: 35609175 PMCID: PMC9175176 DOI: 10.1021/acs.inorgchem.2c01370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
X-ray diffraction
data demonstrate that the adduct formed upon
the reaction of dirhodium(II,II) tetraacetate with RNase A reacts
with imidazole, leading to the formation of an unexpected product
with the imidazole that binds the dirhodium center at an equatorial
site rather than an axial site. The origin of this result has been
dissected using quantum-chemical calculations. The dirhodium(II,II) tetraacetate/RNase A adduct reacts
with imidazole, leading to the formation of an unexpected product
with the imidazole that binds the dirhodium center at an equatorial
site rather than an axial site. The origin of this result has been
dissected using quantum-chemical calculations.
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Affiliation(s)
- Domenico Loreto
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, Napoli I-80126, Italy
| | - Francesca Fasulo
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, Napoli I-80126, Italy
| | - Ana B Muñoz-García
- Department of Physics "Ettore Pancini", University of Naples Federico II, Via Cintia, Napoli I-80126, Italy
| | - Michele Pavone
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, Napoli I-80126, Italy
| | - Antonello Merlino
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia, Napoli I-80126, Italy
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19
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Samanta B, Morales-García Á, Illas F, Goga N, Anta JA, Calero S, Bieberle-Hütter A, Libisch F, Muñoz-García AB, Pavone M, Caspary Toroker M. Challenges of modeling nanostructured materials for photocatalytic water splitting. Chem Soc Rev 2022; 51:3794-3818. [PMID: 35439803 DOI: 10.1039/d1cs00648g] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Understanding the water splitting mechanism in photocatalysis is a rewarding goal as it will allow producing clean fuel for a sustainable life in the future. However, identifying the photocatalytic mechanisms by modeling photoactive nanoparticles requires sophisticated computational techniques based on multiscale modeling. In this review, we will survey the strengths and drawbacks of currently available theoretical methods at different length and accuracy scales. Understanding the surface-active site through Density Functional Theory (DFT) using new, more accurate exchange-correlation functionals plays a key role for surface engineering. Larger scale dynamics of the catalyst/electrolyte interface can be treated with Molecular Dynamics albeit there is a need for more generalizations of force fields. Monte Carlo and Continuum Modeling techniques are so far not the prominent path for modeling water splitting but interest is growing due to the lower computational cost and the feasibility to compare the modeling outcome directly to experimental data. The future challenges in modeling complex nano-photocatalysts involve combining different methods in a hierarchical way so that resources are spent wisely at each length scale, as well as accounting for excited states chemistry that is important for photocatalysis, a path that will bring devices closer to the theoretical limit of photocatalytic efficiency.
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Affiliation(s)
- Bipasa Samanta
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, Haifa 3600003, Israel
| | - Ángel Morales-García
- Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain.
| | - Francesc Illas
- Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain.
| | - Nicolae Goga
- Faculty of Engineering in Foreign Languages, Universitatea Politehnica din Bucuresti, Bucuresti, Romania.
| | - Juan Antonio Anta
- Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, Crta. De Utrera km. 1, 41089 Sevilla, Spain.
| | - Sofia Calero
- Materials Simulation & Modeling, Department of Applied Physics, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - Anja Bieberle-Hütter
- Electrochemical Materials and Interfaces, Dutch Institute for Fundamental Energy Research (DIFFER), 5600 HH Eindhoven, The Netherlands.
| | - Florian Libisch
- Institute for Theoretical Physics, TU Wien, 1040 Vienna, Austria.
| | - Ana B Muñoz-García
- Dipartimento di Fisica "Ettore Pancini", Università di Napoli Federico II, Via Cintia 21, Napoli 80126, Italy.
| | - Michele Pavone
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia 21, Napoli 80126, Italy.
| | - Maytal Caspary Toroker
- Department of Materials Science and Engineering, Technion - Israel Institute of Technology, Haifa 3600003, Israel.,The Nancy and Stephen Grand Technion Energy Program, Technion - Israel Institute of Technology, Haifa 3600003, Israel.
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20
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Lettieri S, Pavone M. TiO 2-Based Nanostructures, Composites and Hybrid Photocatalysts. Materials (Basel) 2022; 15:ma15041271. [PMID: 35207813 PMCID: PMC8879892 DOI: 10.3390/ma15041271] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 02/07/2022] [Indexed: 02/01/2023]
Affiliation(s)
- Stefano Lettieri
- Institute of Applied Sciences and Intelligent Systems “E. Caianiello”, Consiglio Nazionale delle Ricerche (CNR-ISASI), Complesso Universitario di Monte S. Angelo, Via Cupa Cintia 21, 80126 Napoli, Italy
- Correspondence: ; Tel.: +39-081676809
| | - Michele Pavone
- Department of Chemical Sciences, University of Naples “Federico II”, Complesso Universitario di Monte Sant’Angelo, Via Cupa Cintia 21, 80126 Napoli, Italy;
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21
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Benesperi I, Michaels H, Edvinsson T, Pavone M, Probert MR, Waddell P, Muñoz-García AB, Freitag M. Dynamic dimer copper coordination redox shuttles. Chem 2022. [DOI: 10.1016/j.chempr.2021.10.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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22
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Massaro A, Pecoraro A, Hernández S, Talarico G, Muñoz-García AB, Pavone M. Oxygen evolution reaction at the Mo/W-doped bismuth vanadate surface: Assessing the dopant role by DFT calculations. Molecular Catalysis 2022. [DOI: 10.1016/j.mcat.2021.112036] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Coppola C, Pecoraro A, Munoz-Garcia AB, Infantino R, Dessì A, Reginato G, Basosi R, Sinicropi A, Pavone M. Electronic structure and interfacial features of triphenylamine- and phenothiazine-based hole transport materials for methylammonium lead iodide perovskite solar cells. Phys Chem Chem Phys 2022; 24:14993-15002. [DOI: 10.1039/d2cp01270g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Recently, great research efforts have been devoted to perovskite solar cells (PSCs) leading to sunlight-to-power conversion efficiencies above 25%. However, several barriers still hinder the full deployment of these devices....
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24
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Muñoz-García AB, Benesperi I, Boschloo G, Concepcion JJ, Delcamp JH, Gibson EA, Meyer GJ, Pavone M, Pettersson H, Hagfeldt A, Freitag M. Dye-sensitized solar cells strike back. Chem Soc Rev 2021; 50:12450-12550. [PMID: 34590638 PMCID: PMC8591630 DOI: 10.1039/d0cs01336f] [Citation(s) in RCA: 89] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Indexed: 12/28/2022]
Abstract
Dye-sensitized solar cells (DSCs) are celebrating their 30th birthday and they are attracting a wealth of research efforts aimed at unleashing their full potential. In recent years, DSCs and dye-sensitized photoelectrochemical cells (DSPECs) have experienced a renaissance as the best technology for several niche applications that take advantage of DSCs' unique combination of properties: at low cost, they are composed of non-toxic materials, are colorful, transparent, and very efficient in low light conditions. This review summarizes the advancements in the field over the last decade, encompassing all aspects of the DSC technology: theoretical studies, characterization techniques, materials, applications as solar cells and as drivers for the synthesis of solar fuels, and commercialization efforts from various companies.
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Affiliation(s)
- Ana Belén Muñoz-García
- Department of Physics "Ettore Pancini", University of Naples Federico II, 80126 Naples, Italy
| | - Iacopo Benesperi
- School of Natural and Environmental Science, Newcastle University, Bedson Building, NE1 7RU Newcastle upon Tyne, UK.
| | - Gerrit Boschloo
- Department of Chemistry, Ångström Laboratory, Uppsala University, P.O. Box 523, 751 20 Uppsala, Sweden.
| | - Javier J Concepcion
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Jared H Delcamp
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA
| | - Elizabeth A Gibson
- School of Natural and Environmental Science, Newcastle University, Bedson Building, NE1 7RU Newcastle upon Tyne, UK.
| | - Gerald J Meyer
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - Michele Pavone
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| | | | - Anders Hagfeldt
- Department of Chemistry, Ångström Laboratory, Uppsala University, P.O. Box 523, 751 20 Uppsala, Sweden.
- University Management and Management Council, Vice Chancellor, Uppsala University, Segerstedthuset, 752 37 Uppsala, Sweden
| | - Marina Freitag
- School of Natural and Environmental Science, Newcastle University, Bedson Building, NE1 7RU Newcastle upon Tyne, UK.
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25
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Butera V, Massaro A, Muñoz-García AB, Pavone M, Detz H. d-Glucose Adsorption on the TiO 2 Anatase (100) Surface: A Direct Comparison Between Cluster-Based and Periodic Approaches. Front Chem 2021; 9:716329. [PMID: 34532310 PMCID: PMC8438178 DOI: 10.3389/fchem.2021.716329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/29/2021] [Indexed: 11/13/2022] Open
Abstract
Titanium dioxide (TiO2) has been extensively studied as a suitable material for a wide range of fields including catalysis and sensing. For example, TiO2-based nanoparticles are active in the catalytic conversion of glucose into value-added chemicals, while the good biocompatibility of titania allows for its application in innovative biosensing devices for glucose detection. A key process for efficient and selective biosensors and catalysts is the interaction and binding mode between the analyte and the sensor/catalyst surface. The relevant features regard both the molecular recognition event and its effects on the nanoparticle electronic structure. In this work, we address both these features by combining two first-principles methods based on periodic boundary conditions and cluster approaches (CAs). While the former allows for the investigation of extended materials and surfaces, CAs focus only on a local region of the surface but allow for using hybrid functionals with low computational cost, leading to a highly accurate description of electronic properties. Moreover, the CA is suitable for the study of reaction mechanisms and charged systems, which can be cumbersome with PBC. Here, a direct and detailed comparison of the two computational methodologies is applied for the investigation of d-glucose on the TiO2 (100) anatase surface. As an alternative to the commonly used PBC calculations, the CA is successfully exploited to characterize the formation of surface and subsurface oxygen vacancies and to determine their decisive role in d-glucose adsorption. The results of such direct comparison allow for the selection of an efficient, finite-size structural model that is suitable for future investigations of biosensor electrocatalytic processes and biomass conversion catalysis.
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Affiliation(s)
- Valeria Butera
- CEITEC - Central European Institute of Technology Central European Institute of Technology, Brno University of Technology, Brno, Czech
| | - Arianna Massaro
- Department of Chemical Sciences, Università di Napoli Federico II, Comp Univ Monte Sant’Angelo, Naples, Italy
| | - Ana B. Muñoz-García
- Department of Physics “Ettore Pancini”, Università di Napoli Federico II, Comp Univ Monte Sant’Angelo, Naples, Italy
| | - Michele Pavone
- Department of Chemical Sciences, Università di Napoli Federico II, Comp Univ Monte Sant’Angelo, Naples, Italy
| | - Hermann Detz
- CEITEC - Central European Institute of Technology Central European Institute of Technology, Brno University of Technology, Brno, Czech
- Center for Micro and Nanostructures and Institute of Solid State Electronics, Vienna, Austria
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26
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Marchetti C, Rosati A, De Felice F, Boccia SM, Vertechy L, Pavone M, Palluzzi E, Scambia G, Fagotti A. Optimizing the number of cycles of neoadjuvant chemotherapy in advanced epithelial ovarian carcinoma: A propensity-score matching analysis. Gynecol Oncol 2021; 163:29-35. [PMID: 34312003 DOI: 10.1016/j.ygyno.2021.07.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 07/04/2021] [Accepted: 07/14/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Neoadjuvant chemotherapy and interval debulking surgery are now widely offered in ovarian cancer patients unsuitable for surgery; the number of preoperative NACT cycles to be given is still an issue. Our aim was to compare survival outcomes of patients with advanced ovarian cancer treated with ≤4 or more NACT cycles. METHODS A cohort of AEOC patients with stage III-IV epithelial OC who underwent NACT followed by IDS was identified. Patients were classified in group A (≤4 cycles) and group B (>4 cycles). Selection bias from the heterogeneity of demographic and clinical characteristics was avoided using propensity score matching (2:1 ratio). RESULTS 140 (group A) and 70 (group B) patients were included. After the propensity score matching, there were no imbalances in baseline characteristics. BRCA status was associated to improved OS (HR = 0.41; 95%CI 0.18.0.92, p = 0.032) and residual tumor to decreased OS (HR = 1.93; 95%CI 1.08-3.46, p = 0.026). Statistically significant differences were not observed in OS (2-year OS 82.4% for group A versus 77.1% for group B, p = 0.109) and PFS (2-year PFS 29.7% for group A versus 20.0% for group A, p = 0.875). In group B, the administration of >4 cycles was related to an additional chance of achieving complete (12.9%) and partial (34.3%) responses compared to responses after 3-4 cycles. CONCLUSIONS Receiving more than 4 cycles of NACT is no detrimental in terms of OS and PFS in advanced ovarian cancer. Response rates can increase following further cycles administration. APPROACH
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Affiliation(s)
- C Marchetti
- Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - A Rosati
- Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - F De Felice
- Department of Radiotherapy, Policlinico Umberto I, "Sapienza" University of Rome, Rome, Italy
| | - S M Boccia
- Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - L Vertechy
- Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - M Pavone
- Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - E Palluzzi
- Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - G Scambia
- Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Catholic University of the Sacred Heart, Rome, Italy.
| | - A Fagotti
- Department of Woman, Child and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Catholic University of the Sacred Heart, Rome, Italy
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27
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Lettieri S, Pavone M, Fioravanti A, Santamaria Amato L, Maddalena P. Charge Carrier Processes and Optical Properties in TiO 2 and TiO 2-Based Heterojunction Photocatalysts: A Review. Materials (Basel) 2021; 14:ma14071645. [PMID: 33801646 PMCID: PMC8036967 DOI: 10.3390/ma14071645] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/19/2021] [Accepted: 03/23/2021] [Indexed: 02/07/2023]
Abstract
Photocatalysis based technologies have a key role in addressing important challenges of the ecological transition, such as environment remediation and conversion of renewable energies. Photocatalysts can in fact be used in hydrogen (H2) production (e.g., via water splitting or photo-reforming of organic substrates), CO2 reduction, pollution mitigation and water or air remediation via oxidation (photodegradation) of pollutants. Titanium dioxide (TiO2) is a “benchmark” photocatalyst, thanks to many favorable characteristics. We here review the basic knowledge on the charge carrier processes that define the optical and photophysical properties of intrinsic TiO2. We describe the main characteristics and advantages of TiO2 as photocatalyst, followed by a summary of historical facts about its application. Next, the dynamics of photogenerated electrons and holes is reviewed, including energy levels and trapping states, charge separation and charge recombination. A section on optical absorption and optical properties follows, including a discussion on TiO2 photoluminescence and on the effect of molecular oxygen (O2) on radiative recombination. We next summarize the elementary photocatalytic processes in aqueous solution, including the photogeneration of reactive oxygen species (ROS) and the hydrogen evolution reaction. We pinpoint the TiO2 limitations and possible ways to overcome them by discussing some of the “hottest” research trends toward solar hydrogen production, which are classified in two categories: (1) approaches based on the use of engineered TiO2 without any cocatalysts. Discussed topics are highly-reduced “black TiO2”, grey and colored TiO2, surface-engineered anatase nanocrystals; (2) strategies based on heterojunction photocatalysts, where TiO2 is electronically coupled with a different material acting as cocatalyst or as sensitizer. Examples discussed include TiO2 composites or heterostructures with metals (e.g., Pt-TiO2, Au-TiO2), with other metal oxides (e.g., Cu2O, NiO, etc.), direct Z-scheme heterojunctions with g-C3N4 (graphitic carbon nitride) and dye-sensitized TiO2.
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Affiliation(s)
- Stefano Lettieri
- Institute of Applied Sciences and Intelligent Systems “E. Caianiello”, Consiglio Nazionale delle Ricerche (CNR-ISASI), Complesso Universitario di Monte S. Angelo, Via Cupa Cintia 21, 80126 Napoli, Italy
- Correspondence: ; Tel.: +39-081676809
| | - Michele Pavone
- Department of Chemical Sciences, University of Naples “Federico II”, Complesso Universitario di Monte S. Angelo, Via Cupa Cintia 21, 80126 Napoli, Italy;
| | - Ambra Fioravanti
- Institute of Science and Technology for Sustainable Energy and Mobility, Consiglio Nazionale delle Ricerche (CNR-STEMS), Via Canal Bianco 28, 44124 Ferrara, Italy;
| | | | - Pasqualino Maddalena
- Department of Physics “E. Pancini”, University of Naples “Federico II”, Complesso Universitario di Monte S. Angelo, Via Cupa Cintia 21, 80126 Napoli, Italy;
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Frega A, Pavone M, Sesti F, Leone C, Bianchi P, Cozza G, Colombrino C, Lukic A, Marziani R, De Sanctis L, Delli Carpini G, Caserta D, Ciavattini A. Sensitivity and specificity values of high-risk HPV DNA, p16/ki-67 and HPV mRNA in young women with atypical squamous cells of undetermined significance (ASCUS) or low-grade squamous intraepithelial lesion (LSIL). Eur Rev Med Pharmacol Sci 2021; 23:10672-10677. [PMID: 31858534 DOI: 10.26355/eurrev_201912_19765] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of the study was to evaluate the sensitivity and specificity values of high-risk HPV DNA test, p16/ki-67, and HPV mRNA in histologically high-grade cervical intraepithelial lesions (CIN2-CIN3) in women aged 21-24 years with diagnosis of atypical squamous cells of undetermined significance (ASCUS) or low-grade squamous intraepithelial lesion (LSIL) at pap smear. PATIENTS AND METHODS 342 patients between 21-24 years old, attending spontaneously our clinics, 118 with ASCUS and 224 with LSIL, were enrolled in the study. All patients underwent colposcopy and biopsies were performed in the areas with major changes. All patients were tested at the same time for p16/ki-67, high-risk HPV DNA and HPV mRNA. RESULTS Nineteen out of 118 women with ASCUS showed a high-grade cervical intraepithelial lesion, 11 out of 118 (9.32%) CIN2, and 8 out of 118 (6.78%) CIN3. The sensitivity of high-risk HPV DNA was 99.9%, and the specificity 23.2%; p16/ki-67 pointed out a sensitivity of 90.9%, and a specificity of 81.8%; HPV mRNA showed a sensitivity of 81.8%, and specificity of 87.9% in CIN2 lesions. In CIN3 lesions, the sensitivity of high-risk HPV DNA was 99.9%, while the specificity was 19.1%; p16/ki-67 showed a sensitivity of 99.9%, and a specificity of 73.7%; HPV mRNA relived a sensitivity of 87.5%, and a specificity of 80.8%. In women with LSIL, a total of 42/224 (18.75%) of CIN2 were found at the histopathological examination, while 17/224 (7.59%) women presented a CIN3. No case of invasive cancer was identified. High-risk HPV DNA was positive in 190/224 (84.8%), p16/ki-67 in 119/224 (53.1%), and HPV mRNA in 104/224 (46.4%). In women with CIN2, the sensitivity of high-risk HPV DNA was of 92.8%, and the specificity 17.5%, the sensitivity of p16/ki-67 was 95.2%, and specificity 61.8%. HPV mRNA showed a sensitivity of 88.8% and a specificity of 87.8%. In women with CIN3, the sensitivity of high-risk HPV DNA was 88.2%, and the specificity 29.7%; p16/ki-67 pointed out a sensitivity of 94.1%, and a specificity of 49%; HPV mRNA showed a sensitivity of 88.2% and a specificity of 80.6. CONCLUSIONS Taking into account the high rate of spontaneous regression of high-grade lesions in young women, these tests, in particular, the HPV mRNA test, used as a triage test for ASCUS or LSIL, can modify follow-up triage strategy. In fact, this biomarker, due to its high specificity, could lead to a cytology repetition instead of an immediate colposcopy, avoiding over diagnosis and potential overtreatment in this category of women.
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Affiliation(s)
- A Frega
- Department of Surgery, Medicine and Translational Medicine, Sant'Andrea Hospital, Sapienza University of Rome, Rome, Italy.
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29
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Massaro A, Pecoraro A, Muñoz-García AB, Pavone M. First-Principles Study of Na Intercalation and Diffusion Mechanisms at 2D MoS 2/Graphene Interfaces. J Phys Chem C Nanomater Interfaces 2021; 125:2276-2286. [PMID: 33584936 PMCID: PMC7876776 DOI: 10.1021/acs.jpcc.0c10107] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 01/12/2021] [Indexed: 06/12/2023]
Abstract
Na-ion batteries (NIBs) are emerging as promising energy storage devices for large-scale applications. Great research efforts are devoted to design new effective NIB electrode materials, especially for the anode side. A hybrid 2D heterojunction with graphene and MoS2 has been recently proposed for this purpose: while MoS2 has shown good reversible capacity as a NIB anode, graphene is expected to improve conductivity and resistance to mechanical stress upon cycling. The most relevant processes for the anode are the intercalation and diffusion of the large Na ion, whose complex mechanisms are determined by the structural and electronic features of the MoS2/graphene interface. Understanding these processes and mechanisms is crucial for developing new nanoscale anodes for NIBs with high performances. To this end, here we report a state-of-the-art DFT study to address (a) the structural and electronic properties of heterointerfaces between the MoS2 monolayers and graphene, (b) the most convenient insertion sites for Na, and (c) the possible diffusion paths along the interface and the corresponding energy barrier heights. We considered two MoS2 polymorphs: 1T and 3R. Our results show that 1T-MoS2 interacts more strongly with graphene than 3R-MoS2. In both cases, the best Na host site is found at the MoS2 side of the interface, and the band structure reveals a proper n-type character of the graphene moiety, which is responsible for electronic conduction. Minimum-energy paths for Na diffusion show very low barrier heights for the 3R-MoS2/graphene interface (<0.25 eV) and much higher values for its 1T counterpart (∼0.7 eV). Analysis of structural features along the diffusion transition states allows us to identify the strong coordination of Na with the exposed S atoms as the main feature hindering an effective diffusion in the 1T case. These results provide new hints on the physicochemical details of Na intercalation and diffusion mechanisms at complex 2D heterointerfaces and will help further development of advanced electrode materials for efficient NIBs.
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Affiliation(s)
- Arianna Massaro
- Department
of Chemical Sciences, University of Naples
“Federico II”, via Cintia 21, 80126 Naples, Italy
| | - Adriana Pecoraro
- Department
of Chemical Sciences, University of Naples
“Federico II”, via Cintia 21, 80126 Naples, Italy
- Department
of Physics “E. Pancini”, University
of Naples “Federico II”, via Cintia 21, 80126 Naples, Italy
| | - Ana B. Muñoz-García
- Department
of Physics “E. Pancini”, University
of Naples “Federico II”, via Cintia 21, 80126 Naples, Italy
| | - Michele Pavone
- Department
of Chemical Sciences, University of Naples
“Federico II”, via Cintia 21, 80126 Naples, Italy
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Massaro A, Muñoz-García AB, Maddalena P, Bella F, Meligrana G, Gerbaldi C, Pavone M. First-principles study of Na insertion at TiO 2 anatase surfaces: new hints for Na-ion battery design. Nanoscale Adv 2020; 2:2745-2751. [PMID: 36132399 PMCID: PMC9417436 DOI: 10.1039/d0na00230e] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 06/11/2020] [Indexed: 05/03/2023]
Abstract
Na-ion batteries (NIBs) are attracting widespread interest as a potentially more convenient alternative to current state-of-the-art Li-ion batteries (LIBs), chiefly for large-scale energy storage from renewables. Developing novel active materials is essential for the deployment of NIBs, especially in terms of negative electrodes that can accommodate the larger sodium ions. We focus on TiO2 anatase, which has been proposed as a promising anode material for the overall balance of performance, stability and cost. As the exposed crystal facets in different morphologies of nanostructured anatase can affect the electrochemical performances, here we report a theoretical investigation of Na+ adsorption and migration through (101), (100) and (001) surface terminations, thus explaining the different activities toward sodiation reported in the literature. Energy barriers computed by means of the CI-NEB method at the DFT+U level of theory show that the (001) surface is the most effective termination for Na+ insertion. We also provide a detailed analysis to elucidate that the energy barriers are due to structural modifications of the lattice upon sodiation. From these results we derive new design directions for the development of cheap and effective oxide-based nanostructured electrode materials for advanced NIBs.
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Affiliation(s)
- Arianna Massaro
- Department of Chemical Sciences, Università di Napoli Federico II, Comp. Univ. Monte Sant'Angelo via Cintia 21 80126 Naples Italy
| | - Ana B Muñoz-García
- Department of Physics "Ettore Pancini", Università di Napoli Federico II, Comp. Univ. Monte Sant'Angelo via Cintia 21 80126 Naples Italy
| | - Pasqualino Maddalena
- Department of Physics "Ettore Pancini", Università di Napoli Federico II, Comp. Univ. Monte Sant'Angelo via Cintia 21 80126 Naples Italy
| | - Federico Bella
- GAME Lab, Department of Applied Science and Technology, Politecnico di Torino Corso Duca degli Abruzzi 24 10129-Torino Italy
| | - Giuseppina Meligrana
- GAME Lab, Department of Applied Science and Technology, Politecnico di Torino Corso Duca degli Abruzzi 24 10129-Torino Italy
| | - Claudio Gerbaldi
- GAME Lab, Department of Applied Science and Technology, Politecnico di Torino Corso Duca degli Abruzzi 24 10129-Torino Italy
| | - Michele Pavone
- Department of Chemical Sciences, Università di Napoli Federico II, Comp. Univ. Monte Sant'Angelo via Cintia 21 80126 Naples Italy
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31
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Pecoraro A, Schiavo E, Maddalena P, Muñoz‐García AB, Pavone M. Structural and electronic properties of defective
2D
transition metal dichalcogenide heterostructures. J Comput Chem 2020; 41:1946-1955. [DOI: 10.1002/jcc.26364] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/26/2020] [Accepted: 05/27/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Adriana Pecoraro
- Department of Chemical SciencesUniversity of Naples Federico II Naples Italy
| | - Eduardo Schiavo
- Department of Chemical SciencesUniversity of Naples Federico II Naples Italy
| | - Pasqualino Maddalena
- Department of Physics “Ettore Pancini”University of Naples Federico II Naples Italy
| | - Ana B. Muñoz‐García
- Department of Physics “Ettore Pancini”University of Naples Federico II Naples Italy
| | - Michele Pavone
- Department of Chemical SciencesUniversity of Naples Federico II Naples Italy
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De Rosa C, Di Girolamo R, Muñoz-García AB, Pavone M, Talarico G. Breaking Symmetry Rules Enhance the Options for Stereoselective Propene Polymerization Catalysis. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00280] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Claudio De Rosa
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Rocco Di Girolamo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Ana B. Muñoz-García
- Dipartimento di Fisica “Ettore Pancini”, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Michele Pavone
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
| | - Giovanni Talarico
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80126 Napoli, Italy
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Massaro A, Avila J, Goloviznina K, Rivalta I, Gerbaldi C, Pavone M, Costa Gomes MF, Padua AAH. Sodium diffusion in ionic liquid-based electrolytes for Na-ion batteries: the effect of polarizable force fields. Phys Chem Chem Phys 2020; 22:20114-20122. [DOI: 10.1039/d0cp02760j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Understanding the transport of sodium ions in ionic liquids is the key to design novel electrolyte materials for sodium-ion batteries.
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Affiliation(s)
- Arianna Massaro
- Laboratoire de Chimie
- ENS de Lyon
- CNRS
- Université de Lyon
- 69364 Lyon
| | - Jocasta Avila
- Laboratoire de Chimie
- ENS de Lyon
- CNRS
- Université de Lyon
- 69364 Lyon
| | | | - Ivan Rivalta
- Laboratoire de Chimie
- ENS de Lyon
- CNRS
- Université de Lyon
- 69364 Lyon
| | - Claudio Gerbaldi
- GAME Lab
- Department of Applied Science and Technology (DISAT)
- Politecnico di Torino
- 10129 Torino
- Italy
| | - Michele Pavone
- Department of Chemical Sciences
- Università di Napoli “Federico II”
- 80126 Naples
- Italy
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Pecoraro A, De Maria A, Delli Veneri P, Pavone M, Muñoz-García AB. Interfacial electronic features in methyl-ammonium lead iodide and p-type oxide heterostructures: new insights for inverted perovskite solar cells. Phys Chem Chem Phys 2020; 22:28401-28413. [DOI: 10.1039/d0cp05328g] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
First-principles simulations unveil the interface electronic structures of MAPI/NiO and MAPI/CuGaO2 heterojunctions in inverted perovskite solar cells.
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Affiliation(s)
- Adriana Pecoraro
- Department of Chemical Sciences
- University of Naples Federico II
- Comp. Univ. Monte Sant’Angelo
- Via Cintia 21
- Naples
| | - Antonella De Maria
- Italian National Agency for New Technologies
- Energy and Sustainable Economic Development (ENEA) – Portici, Research Centre
- Piazzale E. Fermi 1
- 80055 Portici
- Italy
| | - Paola Delli Veneri
- Italian National Agency for New Technologies
- Energy and Sustainable Economic Development (ENEA) – Portici, Research Centre
- Piazzale E. Fermi 1
- 80055 Portici
- Italy
| | - Michele Pavone
- Department of Chemical Sciences
- University of Naples Federico II
- Comp. Univ. Monte Sant’Angelo
- Via Cintia 21
- Naples
| | - Ana B. Muñoz-García
- Department of Physics “Ettore Pancini”, University of Naples Federico II
- Comp. Univ. Monte Sant’Angelo, Via Cintia 21
- Naples
- Italy
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Frega A, Santomauro M, Sesti F, Di Giuseppe J, Colombrino C, Marziani R, Catalano A, Pavone M, Leone C, Mallozzi M, D'Adamo E, Ciavattini A, Caserta D. Preterm birth after loop electrosurgical excision procedure (LEEP): how cone features and microbiota could influence the pregnancy outcome. Eur Rev Med Pharmacol Sci 2019; 22:7039-7044. [PMID: 30402872 DOI: 10.26355/eurrev_201810_16176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE In the last years, the mean age of women who underwent cervical treatment for high-grade cervical intraepithelial neoplasia (CIN 2-3) is similar to the age of women having their first pregnancy. The aim of this study was to evaluate the risk of preterm birth in subsequent pregnancies after loop electrosurgical excision procedure (LEEP). PATIENTS AND METHODS From January 2013 to January 2016 the study identified a total of 1435 women, nulliparous, who underwent LEEP for CIN 2-3, and who wished to have their first pregnancy. Before surgery, the lengths of the cervix were calculated by transvaginal sonography. After the treatment, the dimension of the removed tissue was evaluated. During the pregnancy, all women carried out periodic transvaginal sonography and vaginal-cervical swabs. RESULTS The average age of patients was 31.96±5.24 years; the interval between the surgical procedure and pregnancy was 12.04±4.67 months; the gestational age at births was 37.53±2.91 weeks. The first vaginal and cervical swab performed during pregnancy was negative in 81.8% of patients. The most prevalent infections were related to C. Albicans, G. Vaginalis, and Group B Streptococcus (GBS). The rate of preterm delivery was significantly higher in women with a minor cervical length. CONCLUSIONS The length and the volume of cervical tissue excised have been shown to be directly related to the risk for preterm birth. Furthermore, vaginal infections and their persistence during pregnancy in women with a history of LEEP may be associated with an increased risk for preterm birth, compared with women with no history of LEEP.
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Affiliation(s)
- A Frega
- Department of Surgical and Medical Science and Translational Medicine, Sant'Andrea Hospital, Faculty of Medicine and Psychology, Sapienza University of Rome, Rome, Italy.
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Galeotti A, Festa P, Viarani V, Pavone M, Sitzia E, Piga S, Cutrera R, De Vincentiis GC, D'Antò V. Correlation between cephalometric variables and obstructive sleep apnoea severity in children. Eur J Paediatr Dent 2019; 20:43-47. [PMID: 30919644 DOI: 10.23804/ejpd.2019.20.01.09] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIM Alterations in craniofacial growth have been associated with obstructive sleep apnoea in children. The main objectives of this study were to analyse the correlation between cephalometric variables and Obstructive Apnea/Hypopnea Index (OAHI) in order to investigate if craniofacial features may influence the severity of obstructive sleep apnoea and to study the correlation between upper nasopharyngeal width and maxillomandibular skeletal discrepancy in sagittal and vertical plane. MATERIALS AND METHODS Study Design: Correlations between cephalometric variables and obstructive sleep apnoea/hypopnea index and between upper airways space and maxillomandibular skeletal discrepancy were investigated. Forty-seven children with obstructive sleep apnoea diagnosed by overnight sleep study (polysomnography) underwent a lateral radiograph, orthodontic and ear-nose-throat examinations. Cephalometric analysis according to Kirjavainen has been performed to define skeletal and upper airways variables. STATISTICS Spearman's correlation analysis was performed between OAHI and all cephalometric variables. Pearson's correlation analysis was performed between cephalometric variables of upper airway space and cephalometric variables related to maxillomandibular discrepancy. Chi-square test was used to compare occlusal features with adenoidal and tonsillar hypertrophy. Kruskal-Wallis rank test was used to compare OAHI with occlusal variables and adenotonsillar hypertrophy. RESULTS The results show a positive correlation between OAHI and maxillomandibular discrepancy measured by ANB angle (rho=0.32; p=0.023). A significant correlation was found between upper nasopharyngeal width and vertical maxillomandibular skeletal discrepancy: 1) ad1-PNS were correlated to Mandibular Plane/Sella- Nasion angle (r=-0.36; p=0.012), Palatal Plane/Mandibular Plane angle (r=-0.39; p=0.007), and Posterior-Anterior Facial Height % (r=0.29; p=0.045); 2) ad2-PNS was correlated to Palatal Plane/Mandibular Plane angle (r=-0.39; p=0.007). No statistically significant differences were found in non-parametric tests between OAHI and occlusal variables or adenoidal and tonsillar hypertrophy. CONCLUSIONS The present study shows a significant correlation between maxillomandibular discrepancy and the severity of OSA. Moreover, the reduction of nasopharyngeal width was correlated to maxillomandibular hyperdivergent growth pattern. These results support the presence of a correlation between sleep-disordered breathing and craniofacial features even if the cause-effect relation is still unclear. Based on these evidences, we suggest the importance of orthodontic evaluation in the management of paediatric OSA.
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Affiliation(s)
- A Galeotti
- Bambino Gesù Children's Research Hospital, Rome, DDS, Dentistry Unit, Department of Paediatric Surgery
| | - P Festa
- Bambino Gesù Children's Research Hospital, Rome, DDS, Dentistry Unit, Department of Paediatric Surgery
| | - V Viarani
- Bambino Gesù Children's Research Hospital, Rome, DDS, Dentistry Unit, Department of Paediatric Surgery
| | - M Pavone
- Bambino Gesù Children's Research Hospital, Rome, MD, Paediatric Pulmonology and Respiratory Intermediate Care Unit, Sleep and Long Term Ventilation Unit, Department of Pediatrics
| | - E Sitzia
- Bambino Gesù Children's Research Hospital, Rome, MD, Otorhinolaringology Unit, Department of Pediatric Surgery
| | - S Piga
- Bambino Gesù Children's Research Hospital, Rome, DDS, Dentistry Unit, Department of Paediatric Surgery, MSc, Unit of Clinical Epidemiology, Medical Direction
| | - R Cutrera
- Bambino Gesù Children's Research Hospital, Rome, DDS, Dentistry Unit, Department of Paediatric Surgery, MD, Pediatric Pulmonology and Respiratory Intermediate Care Unit, Department of Pediatric Surgery
| | - G C De Vincentiis
- Bambino Gesù Children's Research Hospital, Rome, DDS, Dentistry Unit, Department of Paediatric Surgery, MD, Otorhinolaringology Unit, Department of Pediatric Surgery
| | - V D'Antò
- DDS, PhD, Section of Orthodontics, Department of Neurosciences, Reproductive Sciences and Oral Sciences, University of Naples "Federico II", Naples, Italy
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Nosetti L, Paglietti MG, Brunetti L, Masini L, La Grutta S, Cilluffo G, Zaffanello M, Verrillo E, Pavone M, Niespolo AC, Broggi G, Cutrera R. A survey around the Italian pediatric units on current clinical practice for Sleep Disordered Breathing (SDB). Ital J Pediatr 2019; 45:75. [PMID: 31242933 PMCID: PMC6595596 DOI: 10.1186/s13052-019-0658-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 05/12/2019] [Indexed: 01/05/2023] Open
Abstract
Background During recent years, interest on Sleep Disordered Breathing (SDB) in pediatric age has increased, due to the impact on quality of life, psycho-physical attitude and other serious morbidities if undiagnosed and untreated. Methods Italian Pediatric Respiratory Diseases Society (SIMRI) SDB-Working Group carried out an exploratory survey in Italy, from January to December 2016, to assess the diagnostic and therapeutic pathways, perception and relevance of SDB in Italian Hospitals. Results A questionnaire was sent to 180 Pediatric Units (PUs) distributed throughout the Italy; 102 Pediatric Units (PUs; 56.6%) answered and among them 57% dealt with SDB, and 94% recognized SDB as a major problem. Instrumental tests performed by the PUs were saturimetry (66%), nocturnal polygraphy with complete cardio-respiratory monitoring (46%) and full polysomnography (23%). In addition, hospital pediatricians reported that 54% of parents were unaware of the SDB and 84% did not know their complications. In the Northern Italy, the diagnosis was frequently performed with instrumental tools and the treatment was often surgical. In the Southern Italy the diagnosis was clinical, and the treatment was usually with drugs. Conclusions The results of our study showed a heterogeneity in the diagnosis and treatment of SDB throughout Italy. Parents know little about SDB and their complications. The operator satisfaction was associated with the availability of tools for diagnosing SDB. Electronic supplementary material The online version of this article (10.1186/s13052-019-0658-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- L Nosetti
- Pediatric Clinic University of Insubria, Via Ravasi, 2, 21100, Varese, Italy.
| | - M G Paglietti
- Sleep and Long Term Ventilation Unit, Pediatric Pulmonology & Respiratory Intermediate Care Unit, Academic Department of Pediatrics (DPUO), Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - L Brunetti
- U.O.C. Pediatria Dip. Materno-Infantile, Az. Osp. Ente Ecc. Pia Fondazione di Cura e Religione "Card. G. Panico" Tricase, via S. Pio X, 4, 37100, Tricase (Lecce), Italy
| | - L Masini
- Department of Pediatrics, Santobono Children's Hospital, AORN Santobono-Pausilipon, Pediatric Pulmonology & Respiratory Intermediate Care Unit, , Naples, Italy
| | - S La Grutta
- National Research Council (CNR) Institute of Biomedicine and Molecular Immunology "Alberto Monroy" IBIM, Via Ugo La Malfa, 153, 90146, Palermo, Italy
| | - G Cilluffo
- National Research Council (CNR) Institute of Biomedicine and Molecular Immunology "Alberto Monroy" IBIM, Via Ugo La Malfa, 153, 90146, Palermo, Italy
| | - M Zaffanello
- Pediatric Clinic, University of Verona, Hospital for Women and Children, Piazzale Aristide Stefani, 1, 3716, Verona, Italy
| | - E Verrillo
- Sleep and Long Term Ventilation Unit, Pediatric Pulmonology & Respiratory Intermediate Care Unit, Academic Department of Pediatrics (DPUO), Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - M Pavone
- Sleep and Long Term Ventilation Unit, Pediatric Pulmonology & Respiratory Intermediate Care Unit, Academic Department of Pediatrics (DPUO), Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - A C Niespolo
- Pediatric Clinic University of Insubria, Via Ravasi, 2, 21100, Varese, Italy
| | - G Broggi
- Bocconi University, Via Roberto Sarfatti, 25, 20136, Milan, Italy
| | - R Cutrera
- Sleep and Long Term Ventilation Unit, Pediatric Pulmonology & Respiratory Intermediate Care Unit, Academic Department of Pediatrics (DPUO), Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
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Muñoz-García AB, Caputo L, Schiavo E, Baiano C, Maddalena P, Pavone M. Ab initio Study of Anchoring Groups for CuGaO 2 Delafossite-Based p-Type Dye Sensitized Solar Cells. Front Chem 2019; 7:158. [PMID: 30984735 PMCID: PMC6449920 DOI: 10.3389/fchem.2019.00158] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 03/04/2019] [Indexed: 11/13/2022] Open
Abstract
Here we report the first theoretical characterization of the interface between the CuGaO2 delafossite oxide and the carboxylic (–COOH) and phosphonic acid (–PO3H2) anchoring groups. The promising use of delafossites as effective alternative to nickel oxide in p-type DSSC is still limited by practical difficulties in sensitizing the delafossite surface. Thus, this work provides atomistic insights on the structure and energetics of all the possible interactions between the anchoring functional groups and the CuGaO2 surface species, including the effects of the Mg doping and of the solvent medium. Our results highlight the presence of a strong selectivity toward the monodentate binding mode on surface Ga atoms for both the carboxylic and phosphonic acid groups. Since the binding modes have a strong influence on the hole injection thermodynamics, these findings have direct implications for further development of delafossite based p-type DSSCs.
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Affiliation(s)
- Ana B Muñoz-García
- Department of Physics "Ettore Pancini", University of Naples Federico II, Comp. Univ. Monte Sant'Angelo, Naples, Italy
| | - Laura Caputo
- Department of Chemical Sciences, University of Naples "Federico II", Comp. Univ. Monte Sant'Angelo, Naples, Italy
| | - Eduardo Schiavo
- Department of Chemical Sciences, University of Naples "Federico II", Comp. Univ. Monte Sant'Angelo, Naples, Italy
| | - Carmen Baiano
- Department of Chemical Sciences, University of Naples "Federico II", Comp. Univ. Monte Sant'Angelo, Naples, Italy
| | - Pasqualino Maddalena
- Department of Physics "Ettore Pancini", University of Naples Federico II, Comp. Univ. Monte Sant'Angelo, Naples, Italy
| | - Michele Pavone
- Department of Chemical Sciences, University of Naples "Federico II", Comp. Univ. Monte Sant'Angelo, Naples, Italy
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Criscuolo V, Prontera CT, Pavone M, Crescenzi O, Maglione MG, Tassini P, Lettieri S, Maddalena P, Borriello C, Minarini C, Manini P. Luminescent cis-Iridium(III) Complex Based on a Bis(6,7-dimethoxy-3,4-dihydroisoquinoline) Platform Featuring an Unusual cis Orientation of the C ∧N Ligands: From a Theoretical Approach to a Deep Red LEEC Device. ACS Omega 2019; 4:2009-2018. [PMID: 31459452 PMCID: PMC6648618 DOI: 10.1021/acsomega.8b02859] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 01/17/2019] [Indexed: 06/10/2023]
Abstract
By pursuing the strategy of manipulating natural compounds to obtain functional materials, in this work, we report on the synthesis and characterization of a luminescent cationic iridium complex (cis-1), designed starting from the catecholic neurotransmitter dopamine, exhibiting the unusual cis arrangement of the C∧N ligands. Through an integrated experimental and theoretical approach, it was possible to delineate the optoelectronic properties of cis-1. In detail, (a) a series of absorption maxima in the range 300-400 nm was assigned to metal-to-ligand charge transfer and weak and broad absorption maxima at longer wavelengths (400-500 nm) were ascribable to spin-forbidden transitions with a mixed character; (b) there was an intense red phosphorescence with emission set in the range 580-710 nm; and (c) a highest occupied molecular orbital was mainly localized on the metal and the 2-phenylpiridine ligand and a lowest unoccupied molecular orbital was localized on the N∧N ligand, with a ΔH-L set at 2.20 eV. This investigation allowed the design of light-emitting electrochemical cell (LEEC) devices endowed with good performance. The poor literature reporting on the use of cis-iridium(III) complexes in LEECs prompted us to investigate the role played by the selected cathode and the thickness of the emitting layer, as well as the doping effect exerted by ionic liquids on the performance of the devices. All the devices exhibited a deep red emission, in some cases, quite near the pure color (devices #1, #4, and #8), expanding the panorama of the iridium-based red-to-near-infrared LEEC devices. The characteristics of the devices, such as the brightness reaching values of 162 cd/m2 for device #7, suggested that the performances of cis-1 are comparable to those of trans isomers, opening new perspective toward designing a new set of luminescent materials for optoelectronic devices.
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Affiliation(s)
- Valeria Criscuolo
- Department
of Chemical Sciences and Department of Physics “E.
Pancini”, University of Naples Federico
II, via Cintia 4, I-80126 Napoli, Italy
| | - Carmela T. Prontera
- Department
of Chemical Sciences and Department of Physics “E.
Pancini”, University of Naples Federico
II, via Cintia 4, I-80126 Napoli, Italy
| | - Michele Pavone
- Department
of Chemical Sciences and Department of Physics “E.
Pancini”, University of Naples Federico
II, via Cintia 4, I-80126 Napoli, Italy
| | - Orlando Crescenzi
- Department
of Chemical Sciences and Department of Physics “E.
Pancini”, University of Naples Federico
II, via Cintia 4, I-80126 Napoli, Italy
| | - Maria G. Maglione
- Laboratory
of Nanomaterials and Devices (SSPT-PROMAS-NANO), ENEA—C.R. Portici, Piazzale Enrico Fermi 1, I-80055 Portici, Napoli, Italy
| | - Paolo Tassini
- Laboratory
of Nanomaterials and Devices (SSPT-PROMAS-NANO), ENEA—C.R. Portici, Piazzale Enrico Fermi 1, I-80055 Portici, Napoli, Italy
| | - Stefano Lettieri
- National
Research Council, Institute for Applied
Sciences and Intelligent Systems “E. Caianiello” (CNR-ISASI), Via Campi Flegrei 34, I-80078 Pozzuoli, Napoli, Italy
| | - Pasqualino Maddalena
- Department
of Chemical Sciences and Department of Physics “E.
Pancini”, University of Naples Federico
II, via Cintia 4, I-80126 Napoli, Italy
| | - Carmela Borriello
- Laboratory
of Nanomaterials and Devices (SSPT-PROMAS-NANO), ENEA—C.R. Portici, Piazzale Enrico Fermi 1, I-80055 Portici, Napoli, Italy
| | - Carla Minarini
- Laboratory
of Nanomaterials and Devices (SSPT-PROMAS-NANO), ENEA—C.R. Portici, Piazzale Enrico Fermi 1, I-80055 Portici, Napoli, Italy
| | - Paola Manini
- Department
of Chemical Sciences and Department of Physics “E.
Pancini”, University of Naples Federico
II, via Cintia 4, I-80126 Napoli, Italy
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Greenwood E, Sroga-Rios J, Pavone M, Cedars M, Legro R, Huddleston H. Putative role for adiposity reducing antimullerian hormone production in polycystic ovary syndrome and community controls. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Sroga-Rios J, Greenwood E, Huddleston H, Cedars M, Diamond M, Zhang H, Santoro N, Pavone M. Is anti-mullerian hormone a marker for cardio-metabolic health in reproductive age eumenorrheic women? Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bella F, Muñoz-García AB, Colò F, Meligrana G, Lamberti A, Destro M, Pavone M, Gerbaldi C. Combined Structural, Chemometric, and Electrochemical Investigation of Vertically Aligned TiO 2 Nanotubes for Na-ion Batteries. ACS Omega 2018; 3:8440-8450. [PMID: 31458972 PMCID: PMC6644502 DOI: 10.1021/acsomega.8b01117] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 07/18/2018] [Indexed: 05/16/2023]
Abstract
In the challenging scenario of anode materials for sodium-ion batteries, TiO2 nanotubes could represent a winning choice in terms of cost, scalability of the preparation procedure, and long-term stability upon reversible operation in electrochemical cells. In this work, a detailed physicochemical, computational, and electrochemical characterization is carried out on TiO2 nanotubes synthesized by varying growth time and heat treatment, viz. the two most significant experimental parameters during preparation. A chemometric approach is proposed to obtain a concrete and solid multivariate analysis of sodium battery electrode materials. Such a statistical approach, combined with prolonged galvanostatic cycling and density functional theory analysis, allows identifying anatase at high growth time as the TiO2 polymorph of choice as an anode material, thus creating a benchmark for sodium-ion batteries, which currently took the center stage of the research in the field of energy storage systems from renewables.
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Affiliation(s)
- Federico Bella
- GAME
Lab, Department of Applied Science and Technology—DISAT, and MPMNT Group, Department
of Applied Science and Technology—DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
- E-mail: .
Phone: +39 0110904643 (F.B.)
| | - Ana B. Muñoz-García
- Department
of Physics “E. Pancini” and Department of Chemical Sciences, University of Naples Federico II, Comp. Univ. Monte Sant’Angelo, Via Cintia
21, 80126 Napoli, Italy
| | - Francesca Colò
- GAME
Lab, Department of Applied Science and Technology—DISAT, and MPMNT Group, Department
of Applied Science and Technology—DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Giuseppina Meligrana
- GAME
Lab, Department of Applied Science and Technology—DISAT, and MPMNT Group, Department
of Applied Science and Technology—DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Andrea Lamberti
- GAME
Lab, Department of Applied Science and Technology—DISAT, and MPMNT Group, Department
of Applied Science and Technology—DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Matteo Destro
- LITHOPS Batteries S.r.l., Via della Rocca 27, 10123 Torino, Italy
| | - Michele Pavone
- Department
of Physics “E. Pancini” and Department of Chemical Sciences, University of Naples Federico II, Comp. Univ. Monte Sant’Angelo, Via Cintia
21, 80126 Napoli, Italy
| | - Claudio Gerbaldi
- GAME
Lab, Department of Applied Science and Technology—DISAT, and MPMNT Group, Department
of Applied Science and Technology—DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
- E-mail: (C.G.)
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Schiavo E, Latouche C, Barone V, Crescenzi O, Muñoz-García AB, Pavone M. An ab initio study of Cu-based delafossites as an alternative to nickel oxide in photocathodes: effects of Mg-doping and surface electronic features. Phys Chem Chem Phys 2018; 20:14082-14089. [PMID: 29748688 DOI: 10.1039/c8cp00848e] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
CuMO2 delafossites (M = Al, Ga, and Cr) are p-type semiconductor oxides that have been recently proposed as the electrode in p-type dye-sensitized solar cells (p-DSSC) which is an alternative to the standard, low-performing nickel oxide. To assess this potential application of delafossites, we report here a DFT-based investigation of the structural and electronic properties of CuAlO2, CuGaO2 and CuCrO2. In particular, we address the role of Mg doping to obtain the p-type semiconducting character: the substitution of an M3+ cation with Mg2+ is easier with Ga than with Al and Cr, and, in all cases, the hole introduced by Mg2+ leads to the formation of Cu2+ species. Moreover, we address surface electronic features in order to characterize the most exposed delafossite surface termination and, more importantly, to predict the valence band maximum energy value, which determines the p-DSSC open circuit potential. From analysis of all our results, CuGaO2 emerges as the most promising system that can boost the development of new photocathodes for p-DSSCs.
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Affiliation(s)
- Eduardo Schiavo
- Department of Chemical Sciences, University of Naples Federico II, Comp. Univ. Monte Sant'Angelo Via Cintia 21, 80126 Naples, Italy.
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Schiavo E, Muñoz-García AB, Barone V, Vittadini A, Casarin M, Forrer D, Pavone M. Tuning dispersion correction in DFT-D2 for metal-molecule interactions: A tailored reparameterization strategy for the adsorption of aromatic systems on Ag(1 1 1). Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.01.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Rodríguez AM, Muñoz-García AB, Crescenzi O, Vázquez E, Pavone M. Stability of melamine-exfoliated graphene in aqueous media: quantum-mechanical insights at the nanoscale. Phys Chem Chem Phys 2018; 18:22203-9. [PMID: 27452832 DOI: 10.1039/c6cp04213a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In recent experiments, melamine (1,3,5-triazine-2,4,6-triamine) has been proposed as an effective exfoliating agent to obtain high quality graphene from graphite. After washing out the melamine in excess, small amounts (ppm) are still needed to stabilize the dispersion of graphene flakes in aqueous media. To understand the origin of this behaviour, we investigated the melamine-graphene-water system and the fundamental interactions that determine its structure and energetics. To disentangle the subtle interplay of hydrogen-bonding and dispersive forces we used state-of-the-art ab initio calculations based on density functional theory. First, we focused on the case of water molecules interacting with melamine-graphene assemblies at different melamine coverages. We found that water-melamine interactions provide the driving force for washing off the melamine from graphene. Then, we addressed the interaction of single and double layers of water molecules with the graphene surface in the presence of an adsorbed melamine molecule. We found that this melamine acts as a non-covalent anchor for keeping a number of water molecules conveniently close to the graphene surface, thus helping its stabilization in aqueous media. Our analysis helps understanding how competing weak forces can lead to a stable graphene water suspension thanks to small amounts of adsorbed melamine. From our results, we derive simple indications on how the water-graphene interfacial properties can be tuned via non-covalent adsorption of small functional molecules with H-bond donor/acceptor groups. These new hints can be helpful to prepare stable graphene dispersions in water and so to unlock graphene potential in aqueous environments.
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Affiliation(s)
- Antonio M Rodríguez
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Comp. Univ. Monte Sant'Angelo Via Cintia 21, 80126 Naples, Italy.
| | - Ana B Muñoz-García
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Comp. Univ. Monte Sant'Angelo Via Cintia 21, 80126 Naples, Italy.
| | - Orlando Crescenzi
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Comp. Univ. Monte Sant'Angelo Via Cintia 21, 80126 Naples, Italy.
| | - Ester Vázquez
- Departamento de Química Orgánica, Facultad de Ciencias y Tecnologías Químicas-IRICA, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain.
| | - Michele Pavone
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Comp. Univ. Monte Sant'Angelo Via Cintia 21, 80126 Naples, Italy.
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46
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Massin J, Lyu S, Pavone M, Muñoz-García AB, Kauffmann B, Toupance T, Chavarot-Kerlidou M, Artero V, Olivier C. Design and synthesis of novel organometallic dyes for NiO sensitization and photo-electrochemical applications. Dalton Trans 2018; 45:12539-47. [PMID: 27436175 DOI: 10.1039/c6dt02177h] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Two metallo-organic dyes were synthesized and used for NiO sensitization in view of their photoelectrochemical applications. The new dyes present an original π-conjugated structure containing the [Ru(dppe)2] metal fragment with a highly delocalized allenylidene ligand on one side and a σ-alkynyl ligand bearing an electron-rich group, i.e. a thiophene or triphenylamine unit, and one or two anchoring functions on the other side. The optoelectronic, electrochemical and photoelectrochemical properties of the dyes were systematically investigated. A broad photoresponse was observed with the absorption maximum at 600 nm. The X-ray crystal structure of one precursor was obtained to elucidate the structural conformation of the organometallic complexes and theoretical calculations were performed in order to address the photophysical properties of the new dyes. These photosensitizers were further implemented in NiO-based photocathodes and tested as photocurrent generators under pertinent aqueous conditions in association with [Co(NH3)5Cl]Cl2 as an irreversible electron acceptor. The dye-sensitized photocathodes provided good photocurrent densities (40 to 60 μA cm(-2)) at neutral pH in phosphate buffer and a high stability was observed for the two dyes.
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Affiliation(s)
- Julien Massin
- Laboratoire de Chimie Biologie des Métaux, Université Grenoble Alpes, CNRS UMR 5249, CEA Fundamental Research Division, Grenoble, France.
| | - Siliu Lyu
- Institut des Sciences Moléculaires, Université de Bordeaux, CNRS UMR 5255, Talence, France.
| | - Michele Pavone
- Department of Chemical Sciences, University of Naples Federico II, Napoli, Campania, Italy
| | - Ana B Muñoz-García
- Department of Chemical Sciences, University of Naples Federico II, Napoli, Campania, Italy
| | - Brice Kauffmann
- Institut Européen de Chimie et Biologie, Université de Bordeaux, UMS CNRS-INSERM 3033, Pessac, France
| | - Thierry Toupance
- Institut des Sciences Moléculaires, Université de Bordeaux, CNRS UMR 5255, Talence, France.
| | - Murielle Chavarot-Kerlidou
- Laboratoire de Chimie Biologie des Métaux, Université Grenoble Alpes, CNRS UMR 5249, CEA Fundamental Research Division, Grenoble, France.
| | - Vincent Artero
- Laboratoire de Chimie Biologie des Métaux, Université Grenoble Alpes, CNRS UMR 5249, CEA Fundamental Research Division, Grenoble, France.
| | - Céline Olivier
- Institut des Sciences Moléculaires, Université de Bordeaux, CNRS UMR 5255, Talence, France.
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Mori R, Iasilli G, Lessi M, Muñoz-García AB, Pavone M, Bellina F, Pucci A. Luminescent solar concentrators based on PMMA films obtained from a red-emitting ATRP initiator. Polym Chem 2018. [DOI: 10.1039/c7py01933e] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
PMMA_TPE_RED polymers containing 0.98–3.05 wt% of a red-emitting AIEgen were prepared and proposed as high performance luminescent solar concentrators.
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Affiliation(s)
- Riccardo Mori
- Dipartmento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
| | - Giuseppe Iasilli
- Dipartmento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
| | - Marco Lessi
- Dipartmento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
| | - Ana Belén Muñoz-García
- Dipartimento di Fisica “Ettore Pancini”, Università di Napoli Federico II
- 80126 Napoli
- Italy
| | - Michele Pavone
- Dipartimento di Fisica “Ettore Pancini”, Università di Napoli Federico II
- 80126 Napoli
- Italy
| | - Fabio Bellina
- Dipartmento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
| | - Andrea Pucci
- Dipartmento di Chimica e Chimica Industriale
- Università di Pisa
- 56124 Pisa
- Italy
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Baker V, Gracia C, Glassner M, Schnell V, Doody K, Coddington C, Marshall L, Morales A, Pavone M, Behera M, Zbella E, Alper M, Shapiro B, Straseski J, Broyles D. Multi-center evaluation of the access amh assay to measure amh as an aid in the prediction of poor ovarian response to controlled ovarian stimulation. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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49
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Kohlmeier A, Robins J, Pavone M, Zhang J. Ploidy status impacts growth rate post-embryonic genome activation. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.1032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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50
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Pavone M, Moravek M, Lawson A, Klock S, Confino R, Smith K, Kazer R. Fertility preservation (FP) in breast cancer patients does not delay time to cancer treatment. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.546] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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