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Dash S, Tripathy SP, Subudhi S, Behera P, Mishra BP, Panda J, Parida K. A Visible Light-Driven α-MnO 2/UiO-66-NH 2 S-Scheme Photocatalyst toward Ameliorated Oxy-TCH Degradation and H 2 Evolution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:4514-4530. [PMID: 38350006 DOI: 10.1021/acs.langmuir.3c04050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Abstract
Photocatalytic hydrogen production and pollutant degradation using a heterogeneous photocatalyst remains an alternative route for mitigating the impending pollution and energy crisis. Hence, the development of cost-effective and environmentally friendly semiconducting materials with high solar light captivation nature is imperative. To overcome this challenge, α-MnO2 nanorod (NR)-modified MOF UiO-66-NH2 (UNH) was prepared via a facile solvothermal method, which is efficient toward H2 evolution and oxy-tetracycline hydrochloride (O-TCH) degradation. The field-emission scanning electron microscopy (FESEM) and high-resolution transmission electron microscopy (HR-TEM) results of the α-MnO2@UNH (MnU) hybrid reveals its nanorod embedded in MOF matrix, and the X-ray photoelectron spectroscopy (XPS) result confirms the interaction of UNH moiety with α-MnO2 NRs. Additionally, the outstanding separation of photogenerated excitons and the charge-transfer efficacy are further validated by photoluminescence (PL), time-resolved photoluminescence (TRPL), electrochemical impedance spectroscopy (EIS), and transient photocurrent analysis, which are the key causes for photoactivity augmentation in the MnU composites. The MnU-2 composite shows a superior O-TCH degradation efficiency of 93.23% and an excellent H2 production rate of about 410.6 μmol h-1 upon light irradiation. This study provides significant evidence in favor of the suggested mediator-free S-scheme-adapted charge migration path, and it effectively explains the enhanced exciton separation leading to extraordinary catalytic efficiency of the proposed composite.
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Affiliation(s)
- Srabani Dash
- Centre for Nanoscience and Nanotechnology, Siksha 'O' Anusnadhan (Deemed to be University), Bhubaneswar 751030, Odisha, India
| | - Suraj Prakash Tripathy
- Centre for Nanoscience and Nanotechnology, Siksha 'O' Anusnadhan (Deemed to be University), Bhubaneswar 751030, Odisha, India
| | - Satyabrata Subudhi
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Pragyandeepti Behera
- Centre for Nanoscience and Nanotechnology, Siksha 'O' Anusnadhan (Deemed to be University), Bhubaneswar 751030, Odisha, India
| | | | - Jayashree Panda
- Centre for Nanoscience and Nanotechnology, Siksha 'O' Anusnadhan (Deemed to be University), Bhubaneswar 751030, Odisha, India
| | - Kulamani Parida
- Centre for Nanoscience and Nanotechnology, Siksha 'O' Anusnadhan (Deemed to be University), Bhubaneswar 751030, Odisha, India
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Kumar D, Jaswal R, Park CH, Kim CS. Synergistic Trimetallic Nanocomposites as Visible-NIR-Sunlight-Driven Photocatalysts for Efficient Artificial Photosynthesis. ACS APPLIED MATERIALS & INTERFACES 2023; 15:42490-42500. [PMID: 37644704 DOI: 10.1021/acsami.3c06730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Here, we report monodispersed tricomponent MnNSs-SnO2@Pt and MnNFs-SnO2@Pt nanocomposites prepared by simultaneous SnO2 and Pt nanodot coating on Mn nanospheres (MnNSs) and Mn nanoflowers (MnNFs) for highly efficient CO2 photoreduction in visible-NIR-sunlight irradiation. MnNFs-SnO2@Pt showed higher efficiency with a quantum yield of 3.21% and a chemical yield of 5.45% for CO2 conversion under visible light irradiation for HCOOH formation with 94% selectivity. Similarly, MnNFs-SnO2@Pt displayed significant photocatalytic efficiency in NIR and sunlight irradiation for HCOOH yield. MnNFs-SnO2@Pt nanocomposites also showed robust morphology and sustained structural stability with shelf-life for at least 1 year and were utilized for at least 10 reaction cycles without losing significant photocatalytic efficiency. The high surface area (94.98 m2/g), efficient electron-hole separation, and Pt-nanodot support in MnNFs--SnO2@Pt contributed to a higher photocatalytic efficacy toward CO2 reduction.
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Affiliation(s)
- Dinesh Kumar
- Division of Mechanical Design Engineering, Jeonbuk National University, Jeonju 54896, South Korea
- Regional Leading Research Center for Nanocarbon-based Energy Materials and Application Technology, Jeonbuk National University, Jeonju 54896, South Korea
- Department of Bionanotechnology and Bioconvergence Engineering, Graduate School, Jeonbuk National University, Jeonju 54896, South Korea
- Department of Bionanosystem Engineering, Graduate School, Jeonbuk National University, Jeonju 54896, South Korea
| | - Richa Jaswal
- Division of Mechanical Design Engineering, Jeonbuk National University, Jeonju 54896, South Korea
- Department of Bionanotechnology and Bioconvergence Engineering, Graduate School, Jeonbuk National University, Jeonju 54896, South Korea
- Department of Bionanosystem Engineering, Graduate School, Jeonbuk National University, Jeonju 54896, South Korea
| | - Chan Hee Park
- Division of Mechanical Design Engineering, Jeonbuk National University, Jeonju 54896, South Korea
- Regional Leading Research Center for Nanocarbon-based Energy Materials and Application Technology, Jeonbuk National University, Jeonju 54896, South Korea
- Department of Bionanotechnology and Bioconvergence Engineering, Graduate School, Jeonbuk National University, Jeonju 54896, South Korea
| | - Cheol Sang Kim
- Division of Mechanical Design Engineering, Jeonbuk National University, Jeonju 54896, South Korea
- Department of Bionanotechnology and Bioconvergence Engineering, Graduate School, Jeonbuk National University, Jeonju 54896, South Korea
- Department of Bionanosystem Engineering, Graduate School, Jeonbuk National University, Jeonju 54896, South Korea
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Fabrication of High Surface Area TiO2-MoO3 Nanocomposite as a Photocatalyst for Organic Pollutants Removal from Water Bodies. Catalysts 2023. [DOI: 10.3390/catal13020362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
A nanocomposite (NC) of titanium (IV) oxide (TiO2) and molybdenum (VI) oxide (MoO3) was synthesized using a hydrothermal route. Detailed analyses using transmission electron microscopy, X-ray diffraction, X-ray fluorescence (XRF), Brunauer–Emmett–Teller (BET) isotherms, X-ray photoelectron spectroscopy, Raman, and diffuse reflectance infrared Fourier transform spectroscopy were carried out and confirmed the successful formation of pure TiO2-MoO3 (Ti-Mo) NC. The Ti-Mo NC possesses sizes in the range of 150–500 nm. XPS, Raman, and DRIFT shift measurements confirmed the formation of mixed oxide linkage in the form of Ti-O-Mo. Sorption of nitrogen isotherms revealed a significant increase in the number and pore widths of mesopores in the NC. Water sorption isotherms revealed enhanced affinity of the nanocomposites for water relative to the pure metal oxides. The BET surface area for Ti-Mo NC from the nitrogen adsorption isotherm was 129.3 m2/g which is much higher than the pure metal oxides (i.e., 37.56 m2/g for TiO2 and 2.21 m2/g for MoO3). The Ti-Mo NC provided suitable adsorption sites that captured the studied carbamates from the solution and promoted their photodegradation process. The photocatalytic degradation of MB in the presence of the catalyst was enhanced by 2.9 and 5.5 folds upon irradiation with white LED and 302 nm UV light sources, respectively.
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Kanwal S, Khan M, Uzair M, Fatima M, Ammar M, Saman Z, Elsaeedy H, Urram Shahzad M, Mufarreh Elqahtani Z, Alwadai N. A facile green approach to the synthesis of Bi2WO6@V2O5 heterostructure and their photocatalytic activity evaluation under visible light irradiation for RhB dye removal. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
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Fan K, Chen Q, Zhao J, Liu Y. Preparation of MnO 2-Carbon Materials and Their Applications in Photocatalytic Water Treatment. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:541. [PMID: 36770501 PMCID: PMC9921467 DOI: 10.3390/nano13030541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/17/2023] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Water pollution is one of the most important problems in the field of environmental protection in the whole world, and organic pollution is a critical one for wastewater pollution problems. How to solve the problem effectively has triggered a common concern in the area of environmental protection nowadays. Around this problem, scientists have carried out a lot of research; due to the advantages of high efficiency, a lack of secondary pollution, and low cost, photocatalytic technology has attracted more and more attention. In the past, MnO2 was seldom used in the field of water pollution treatment due to its easy agglomeration and low catalytic activity at low temperatures. With the development of carbon materials, it was found that the composite of carbon materials and MnO2 could overcome the above defects, and the composite had good photocatalytic performance, and the research on the photocatalytic performance of MnO2-carbon materials has gradually become a research hotspot in recent years. This review covers recent progress on MnO2-carbon materials for photocatalytic water treatment. We focus on the preparation methods of MnO2 and different kinds of carbon material composites and the application of composite materials in the removal of phenolic compounds, antibiotics, organic dyes, and heavy metal ions in water. Finally, we present our perspective on the challenges and future research directions of MnO2-carbon materials in the field of environmental applications.
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Affiliation(s)
- Kun Fan
- Chinese Research Academy of Environment Sciences, Beijing 100012, China
| | - Qing Chen
- Chinese Research Academy of Environment Sciences, Beijing 100012, China
- Ecological and Environmental Protection Company, China South-to-North Water Diversion Corporation Limited, Beijing 100036, China
| | - Jian Zhao
- Chinese Research Academy of Environment Sciences, Beijing 100012, China
| | - Yue Liu
- Chinese Research Academy of Environment Sciences, Beijing 100012, China
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Molybdenum and chitosan-doped MnO2 nanostructures used as dye degrader and antibacterial agent. APPLIED NANOSCIENCE 2022. [DOI: 10.1007/s13204-022-02656-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Warshagha MA, Muneer M. Direct Z-Scheme AgBr/β-MnO 2 Photocatalysts for Highly Efficient Photocatalytic and Anticancer Activity. ACS OMEGA 2022; 7:30171-30183. [PMID: 36061726 PMCID: PMC9434753 DOI: 10.1021/acsomega.2c03260] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 08/05/2022] [Indexed: 05/28/2023]
Abstract
The preparation of visible light-responsive efficient photocatalysts for removing organic contaminants from water and killing cancer cells has gotten a lot of attention due to the growing global concern. In this study, we have successfully fabricated an efficient AgBr/β-MnO2 nanocomposite via a facile deposition and precipitation method at room temperature. Techniques such as XRD, SEM-EDS, TEM, DRS, PL, EIS, ESR, and FTIR were used to determine the crystalline, structural, morphological, optical, and other properties. The SEM and TEM analyses reveal that AgBr NPs are decorated on the surface of β-MnO2, which possesses rods with a sphere-like structure for AgBr/β-MnO2. The EDX analysis confirms the existence of Mn, O, Ag, and Br elements in the nanocomposites without an extra peak, indicating that the synthesized samples are highly pure. The high photocatalytic performance of AgBr/β-MnO2 could be attributed to the formation of Ag NPs and the construction of the Z-scheme heterojunction between AgBr and β-MnO2. This may enhance fast light absorption and efficient photogenerated (e-/h+) pairs, as indicated by EIS and photoluminescence measurements, which in turn achieved high activity for the decomposition of MB (97%, in 12 min), RhB (98.9%, in 9 min), and paracetamol (80%, in 180 min), respectively. The kinetic model study proposed that the first-order model showed a better fit than the zero- and second-order for the photocatalytic decolorization of RhB dye. XRD analysis of 0.2 AgBr/β-MnO2 before and after recycling confirms the high stability of the catalyst. HPLC results showed that no detectable by-products are produced through the decomposition of paracetamol. Interestingly, 0.2 AgBr/β-MnO2 nanocomposites showed visible light-induced anticancer activity against A549 cancer cell lines. The mechanistic degradation pathway has been proposed using the involvement of active species like superoxide radicals (-•O2) and photoinduced holes (h+). The proposed work focuses on synthesizing effective photocatalysts in a less hazardous environment with superior biological activity.
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Design of S-scheme 3D nickel molybdate/AgBr nanocomposites: Tuning of the electronic band structure towards efficient interfacial photoinduced charge separation and remarkable photocatalytic activity. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113751] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Ag/AgCl@Tubular g-C3N4 nanostructure as an enhanced visible light photocatalyst for the removal of organic dye compounds and biomedical waste under visible light. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113700] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Zhao F, Wang Y, Shi Y, Dong Y, Liu X. MOF-5 derived ZnO-C nanoparticles combined with α-MnO 2 for efficient degradation of tetracycline under visible light. NEW J CHEM 2022. [DOI: 10.1039/d1nj06218b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A multifunctional α-MnO2/ZnO-C (MZ) Z-scheme photocatalyst was synthesized by suit-growth of α-MnO2 on the surface of MOF-5 and pyrolysis of the organic components in a certain condition. The obtained photocatalysts...
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Salari H, Erami M, Dokoohaki MH, Zolghadr AR. New insights into adsorption equilibrium of organic pollutant on MnO2 nanorods: Experimental and computational studies. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Zheng X, Li Y, Peng H, Huang Z, Wang H, Wen J. Efficient solar-light photodegradation of tetracycline hydrochloride using BiVO4/MoO3 composites. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126599] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Aadil M, Zulfiqar S, Shahid M, Agboola PO, Al-Khalli NF, Warsi MF, Shakir I. Fabrication of CNTs supported binary nanocomposite with multiple strategies to boost electrochemical activities. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138332] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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