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Kalita P, Boruah PJ, Pal AR, Bailung H. Harnessing plasma-generated reactive species for the synthesis of different phases of molybdenum oxide to study adsorption and photocatalytic activity. Dalton Trans 2024; 53:11071-11087. [PMID: 38885122 DOI: 10.1039/d4dt01620c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
This study employs plasma-liquid interaction technique to synthesize different phases of molybdenum oxide using air and argon as plasma-forming gases. In situ plasma-generated nitrogen species primarily NO3-/NO2- and hydrogen species (H+) facilitate the reduction of the molybdenum precursor anion (Mo7O24-). The reduced Mo species subsequently reacts with reactive oxygen species, forming MoO6 octahedra, which is the building block of a molybdenum oxide crystal. Varied concentrations of NO3-/NO2- and H+ species in air and argon plasma treatment significantly influence the growth process. Air plasma synthesis yields hexagonal molybdenum oxide microrods, which upon calcination changes its phase to orthorhombic 2D layered structure. Moreover, the argon plasma synthesized sample exhibits a mixed phase of hexagonal and orthorhombic molybdenum oxide due to the heavy argon ion bombardment, inducing material porosity and surface oxygen vacancies. The mixed-phase material exhibits superior adsorption and photo-degradation towards cationic dye compared to the other two phases. The higher photocatalytic performance may be responsible for the extended lifetime of the photo-generated charge carriers possessed by the mixed-phase material. Radical scavenging tests have identified holes and hydroxyl radicals as the key reactive species that take part in the photo-degradation process.
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Affiliation(s)
- Parismita Kalita
- Plasma Application Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology (IASST), Paschim Boragaon, Guwahati - 781035, Assam, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh - 201002, India
| | - Palash Jyoti Boruah
- Plasma Application Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology (IASST), Paschim Boragaon, Guwahati - 781035, Assam, India.
| | - A R Pal
- Plasma Application Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology (IASST), Paschim Boragaon, Guwahati - 781035, Assam, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh - 201002, India
| | - H Bailung
- Plasma Application Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology (IASST), Paschim Boragaon, Guwahati - 781035, Assam, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh - 201002, India
- Department of Physics, Bodoland University, Kokrajhar - 783370, Assam, India
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Magliano E, Mariani P, Agresti A, Pescetelli S, Matteocci F, Taheri B, Cricenti A, Luce M, Di Carlo A. Semitransparent Perovskite Solar Cells with Ultrathin Protective Buffer Layers. ACS APPLIED ENERGY MATERIALS 2023; 6:10340-10353. [PMID: 37886223 PMCID: PMC10598631 DOI: 10.1021/acsaem.3c00735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 09/13/2023] [Indexed: 10/28/2023]
Abstract
Semitransparent perovskite solar cells (ST-PSCs) are increasingly important in a range of applications, including top cells in tandem devices and see-through photovoltaics. Transparent conductive oxides (TCOs) are commonly used as transparent electrodes, with sputtering being the preferred deposition method. However, this process can damage exposed layers, affecting the electrical performance of the devices. In this study, an indium tin oxide (ITO) deposition process that effectively suppresses sputtering damage was developed using a transition metal oxides (TMOs)-based buffer layer. An ultrathin (<10 nm) layer of evaporated vanadium oxide or molybdenum oxide was found to be effective in protecting against sputtering damage in ST-PSCs for tandem applications, as well as in thin perovskite-based devices for building-integrated photovoltaics. The identification of minimal parasitic absorption, the high work function and the analysis of oxygen vacancies denoted that the TMO layers are suitable for use in ST-PSCs. The highest fill factor (FF) achieved was 76%, and the efficiency (16.4%) was reduced by less than 10% when compared with the efficiency of gold-based PSCs. Moreover, up-scaling to 1 cm2-large area ST-PSCs with the buffer layer was successfully demonstrated with an FF of ∼70% and an efficiency of 15.7%. Comparing the two TMOs, the ST-PSC with an ultrathin V2Ox layer was slightly less efficient than that with MoOx, but its superior transmittance in the near infrared and greater light-soaking stability (a T80 of 600 h for V2Ox compared to a T80 of 12 h for MoOx) make V2Ox a promising buffer layer for preventing ITO sputtering damage in ST-PSCs.
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Affiliation(s)
- Erica Magliano
- C.H.O.S.E.
(Center for Hybrid and Organic Solar Energy), Electronic Engineering
Department, University of Rome Tor Vergata, Via del Politecnico 1, 00133, Rome, Italy
| | - Paolo Mariani
- C.H.O.S.E.
(Center for Hybrid and Organic Solar Energy), Electronic Engineering
Department, University of Rome Tor Vergata, Via del Politecnico 1, 00133, Rome, Italy
| | - Antonio Agresti
- C.H.O.S.E.
(Center for Hybrid and Organic Solar Energy), Electronic Engineering
Department, University of Rome Tor Vergata, Via del Politecnico 1, 00133, Rome, Italy
| | - Sara Pescetelli
- C.H.O.S.E.
(Center for Hybrid and Organic Solar Energy), Electronic Engineering
Department, University of Rome Tor Vergata, Via del Politecnico 1, 00133, Rome, Italy
| | - Fabio Matteocci
- C.H.O.S.E.
(Center for Hybrid and Organic Solar Energy), Electronic Engineering
Department, University of Rome Tor Vergata, Via del Politecnico 1, 00133, Rome, Italy
| | - Babak Taheri
- ENEA
- Centro Ricerche Frascati, Via Enrico Fermi, 45, 00044, Frascati, Rome, Italy
| | - Antonio Cricenti
- Istituto
di Struttura della Materia (CNR-ISM) National Research Council, via del Fosso del Cavaliere 100, 00133, Rome, Italy
| | - Marco Luce
- Istituto
di Struttura della Materia (CNR-ISM) National Research Council, via del Fosso del Cavaliere 100, 00133, Rome, Italy
| | - Aldo Di Carlo
- C.H.O.S.E.
(Center for Hybrid and Organic Solar Energy), Electronic Engineering
Department, University of Rome Tor Vergata, Via del Politecnico 1, 00133, Rome, Italy
- Istituto
di Struttura della Materia (CNR-ISM) National Research Council, via del Fosso del Cavaliere 100, 00133, Rome, Italy
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Shabbir M, Imran M, Haider A, Shahzadi I, Ahmad W, Ul-Hamid A, Nabgan W, Shahzadi A, Al-Shanini A, Al-Anazy MM, Adam M, Ikram M. Efficient Samarium-Grafted-C 3N 4-Doped α-MoO 3 Used as a Dye Degrader and Antibacterial Agent: In Silico Molecular Docking Study. ACS OMEGA 2023; 8:34805-34815. [PMID: 37779977 PMCID: PMC10535254 DOI: 10.1021/acsomega.3c03910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 08/29/2023] [Indexed: 10/03/2023]
Abstract
This study was used to evaluate the catalytic activity (CA) and bactericidal activity of α-MoO3 and Sm-g-C3N4-doped α-MoO3 composites prepared through an efficient, cost-effective coprecipitation route. Their characteristic studies verify the formation of α-MoO3 and its composites (3, 6, and 9 mL Sm-g-C3N4-doped α-MoO3), which showed high crystallinity, as confirmed by X-ray diffraction (XRD) analysis. The production of superoxide and hydroxyl radicals due to charge transfer through α-MoO3 and g-C3N4 eventually forms electrons in g-C3N4 and holes around α-MoO3. CA against Rhodamine B (RhB) in basic medium provides maximum results compared to acidic and neutral media. The bactericidal efficacy of the (9 mL) doped sample represents a greater inhibition zone of 6.10 mm against the negative bacterial strain Escherichia coli. Furthermore, in silico studies showed that the generated nanorods may inhibit DNA gyrase and dihydropteroate synthase (DHPS) enzymes.
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Affiliation(s)
- Mohsin Shabbir
- Department
of Chemistry, Government College University, Faisalabad, Pakpattan Road, Sahiwal 57000, Punjab, Pakistan
| | - Muhammad Imran
- Department
of Chemistry, Government College University, Faisalabad, Pakpattan Road, Sahiwal 57000, Punjab, Pakistan
| | - Ali Haider
- Department
of Clinical Sciences, Faculty of Veterinary and Animal Sciences, Muhammad Nawaz Shareef, University of Agriculture, Multan 66000, Punjab, Pakistan
| | - Iram Shahzadi
- Punjab
University College of Pharmacy, Allama Iqbal Campus, University of Punjab, Lahore 54000, Pakistan
| | - Wakeel Ahmad
- Solar
Cell Applications Research Lab, Department of Physics, Government College University Lahore, Lahore 54000, Punjab, Pakistan
| | - Anwar Ul-Hamid
- Core
Research Facilities, Research Institute, King Fahd University of Petroleum
& Minerals, Dhahran 31261, Saudi Arabia
| | - Walid Nabgan
- Departament
d’Enginyeria Química, Universitat
Rovira i Virgili, Av Països Catalans 26, 43007 Tarragona, Spain
| | - Anum Shahzadi
- Faculty
of Pharmacy, The University of Lahore, Lahore 54000, Pakistan
| | - Ali Al-Shanini
- College
of Petroleum and Engineering, Hadhramout
University, Mukalla 50511, Hadhramout, P. O. Box 50511, Yemen
| | - Murefah mana Al-Anazy
- Department
of Chemistry, College of Sciences, Princess
Nourah bint Abdulrahman University (PNU), P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Mohamed Adam
- Department
of Radiological Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61421, Saudi Arabia
| | - Muhammad Ikram
- Solar
Cell Applications Research Lab, Department of Physics, Government College University Lahore, Lahore 54000, Punjab, Pakistan
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Shukla BK, Gautam MK, Rawat S, Bhandari H, Singh J, Garg S. A sustainable approach for the removal of toxic 4-nitrophenol in the presence of H2O2 using visible light active Bi2MoO6 nanomaterial synthesized via continuous flow method. REACTION KINETICS MECHANISMS AND CATALYSIS 2023. [DOI: 10.1007/s11144-023-02402-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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Li K, Pan S, Zhang H, Zhang Q, Wan D, Zeng X. Interfacial engineering and chemical reconstruction of Mo/Mo 2C@CoO@NC heterostructure for promoting oxygen evolution reaction. Dalton Trans 2023; 52:2693-2702. [PMID: 36745482 DOI: 10.1039/d2dt03865j] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Chemical reorganization and interfacial engineering in hybrid nanomaterials are promising strategies for enhancing electrocatalytic performance. Herein, MoO3@zeolitic imidazolate framework-67 (ZIF-67) heterogeneous nanoribbons are designed through coordination assembly. By following heat treatment, a Mo/Mo2C@CoO@NC heterostructure with nitrogen-doped carbon-encapsulated CoO hexagons (CoO@NC) anchored on the Mo/Mo2C jag matrix was fabricated. Notably, through controllable experimental optimization, the as-prepared Mo/Mo2C@CoO@NC heterostructure exhibits numerous active centers (e.g. Mo, Mo2C, CoO, and NC), fully exposed active sites (numerous pores and jagged structures), and abundant heterointerfaces (Mo/Mo2C, Mo2C/CoO@NC, Mo2C/amorphous, and CoO@NC/amorphous), and exhibits good conductivity (localized single-crystal behavior, graphitized carbon). As a result, the as-developed Mo/Mo2C@CoO@NC heterostructures inherit impressive oxygen evolution reaction (OER) performance with an overpotential of only 215 mV at 10 mA cm-2. Furthermore, Mo/Mo2C@CoO@NC heterostructures exhibit excellent stability with a current density retention of 98.4% after 20 h chronoamperometry. This work provides deep insights into chemical reconstructions and tuning heterointerfaces to efficiently enhance the OER activity of heterostructure-based electrocatalysts.
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Affiliation(s)
- Kai Li
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China.
| | - Sihui Pan
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China.
| | - Haiqi Zhang
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China.
| | - Qingqing Zhang
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China.
| | - Detian Wan
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China.
| | - Xiaojun Zeng
- School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, China.
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