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Mohanty C, Samal A, Behera AK, Das N. Poly Meta-Aminophenol (PmAP) as a Solid-State Electron Mediator in the Z-Scheme, Ag 3PO 4/CoFe 2O 4 Heterojunction: Mineralization of Highly Concentrated Bisphenol-A and Reactive Dyes Water Pollutants. ACS OMEGA 2024; 9:19968-19981. [PMID: 38737034 PMCID: PMC11080028 DOI: 10.1021/acsomega.3c09943] [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: 12/12/2023] [Revised: 03/22/2024] [Accepted: 03/27/2024] [Indexed: 05/14/2024]
Abstract
This study demonstrated the effectiveness of poly meta-aminophenol (PmAP) as a solid electron mediator in the Z-scheme photocatalytic system for organic pollutants (viz. bisphenol-A and reactive dyes) mineralization and also illustrated how PmAP transported the photogenerated electrons from an O2-emitting photocatalyst (Ag3PO4) to a H2-emitting photocatalyst (CoFe2O4) enabling enhanced photocatalytic activity under visible light irradiation. The PmAP/Ag3PO4-CoFe2O4 (PAC-10), was prepared by a two-step process and characterized by various analytical methods to assess the impact of PmAP on optical, photocatalytic, and electrochemical characteristics of the CoFe2O4 (CFO)/Ag3PO4 composite. The morphological investigation revealed that the PmAP sheet was nicely decorated with evenly distributed Ag3PO4 and CoFe2O4 particles. The M-S plot and impedance analyses were used to assess the electrochemical capabilities of the catalyst. Z-scheme charge transfer pathways were well supported by the radical trapping experiment and HRTEM analysis of Pt photodeposited PAC-10 photocatalysts during the photoreaction. Because of its magnetic nature and ease of synthesis, the PAC-10 offers an easily recyclable Z-scheme photocatalytic system that has the potential for purifying wastewater with high concentrations (up to 100 mg/L) of organic pollutants within 30 min of visible light exposition.
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Affiliation(s)
| | - Alaka Samal
- Department of Chemistry, Utkal University, Vani Vihar, Odisha 751004, India
| | - Ajaya K. Behera
- Department of Chemistry, Utkal University, Vani Vihar, Odisha 751004, India
| | - Nigamananda Das
- Department of Chemistry, Utkal University, Vani Vihar, Odisha 751004, India
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2
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Hennessey S, González-Gómez R, McCarthy K, Burke CS, Le Houérou C, Sarangi NK, McArdle P, Keyes TE, Cucinotta F, Farràs P. Enhanced Photostability and Photoactivity of Ruthenium Polypyridyl-Based Photocatalysts by Covalently Anchoring Onto Reduced Graphene Oxide. ACS OMEGA 2024; 9:13872-13882. [PMID: 38559923 PMCID: PMC10976380 DOI: 10.1021/acsomega.3c08800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 01/19/2024] [Accepted: 02/29/2024] [Indexed: 04/04/2024]
Abstract
Recentstudies toward finding more efficient ruthenium metalloligands for photocatalysis applications have shown that the derivatives of the linear [Ru(dqp)2]2+ (dqp: 2,6-di(quinolin-8-yl)-pyridine) complexes hold significant promise due to their extended emission lifetime in the μs time scale while retaining comparable redox potential, extinction coefficients, and absorption profile in the visible region to [Ru(bpy)3]2+ (bpy: 2,2'-bipyridine) and [Ru(tpy)2]2+ (tpy: 2,2':6',2″-terpyridine) complexes. Nevertheless, its photostability in aqueous solution needs to be improved for its widespread use in photocatalysis. Carbon-based supports have arisen as potential solutions for improving photostability and photocatalytic activity, yet their effect greatly depends on the interaction of the metal complex with the support. Herein, we present a strategy for obtaining Ru-polypyridyl complexes covalently linked to aminated reduced graphene oxide (rGO) to generate novel materials with long-term photostability and increased photoactivity. Specifically, the hybrid Ru(dqp)@rGO system has shown excellent photostable behavior during 24 h of continual irradiation, with an enhancement of 10 and 15% of photocatalytic dye degradation in comparison with [Ru(dqp)2]2+ and Ru(tpy)@rGO, respectively, as well as remarkable recyclability. The presented strategy corroborates the potential of [Ru(dqp)2]2+ as an interesting photoactive molecule to produce more advantageous light-active materials by covalent attachment onto carbon-based supports.
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Affiliation(s)
- Seán Hennessey
- School
of Biological and Chemical Sciences, Energy Research Centre, Ryan Institute, University of Galway, H91 CF50 Galway, Ireland
| | - Roberto González-Gómez
- School
of Biological and Chemical Sciences, Energy Research Centre, Ryan Institute, University of Galway, H91 CF50 Galway, Ireland
| | - Kathryn McCarthy
- School
of Biological and Chemical Sciences, Energy Research Centre, Ryan Institute, University of Galway, H91 CF50 Galway, Ireland
| | - Christopher S. Burke
- School
of Chemical Sciences, National Centre for Sensor Research, Dublin City University, Dublin 9, Ireland
- School
of Chemistry and Analytical and Biological Chemistry Research Facility
(ABCRF), University College Cork, T12 K8AF Cork, Ireland
| | - Camille Le Houérou
- School
of Biological and Chemical Sciences, Energy Research Centre, Ryan Institute, University of Galway, H91 CF50 Galway, Ireland
| | - Nirod Kumar Sarangi
- School
of Chemical Sciences, National Centre for Sensor Research, Dublin City University, Dublin 9, Ireland
| | - Patrick McArdle
- School
of Biological and Chemical Sciences, Energy Research Centre, Ryan Institute, University of Galway, H91 CF50 Galway, Ireland
| | - Tia E. Keyes
- School
of Chemical Sciences, National Centre for Sensor Research, Dublin City University, Dublin 9, Ireland
| | - Fabio Cucinotta
- School
of Natural and Environmental Sciences, Bedson Building, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K.
| | - Pau Farràs
- School
of Biological and Chemical Sciences, Energy Research Centre, Ryan Institute, University of Galway, H91 CF50 Galway, Ireland
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Jena M, Mallick S, Rath A, Dalai MK, Das DP. GQD@NiFe-LDH Nanosheets for Photocatalytic Activity towards Textile Dye Degradation via Lattice Contraction. Chempluschem 2023; 88:e202300276. [PMID: 37592812 DOI: 10.1002/cplu.202300276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/14/2023] [Accepted: 08/17/2023] [Indexed: 08/19/2023]
Abstract
The functionalized NiFe-LDH with photosensitized GQDs were synthesized through the hydrothermal route by differing the amount of GQDs solution and studied its efficacy towards the mineralization of textile dyes under visible light. The synthesized samples were characterized by XRD, FESEM, HRTEM, DRUV-Vis, RAMAN, XPS, and BET. The combined effect of the hexagonal carbon lattice in GQD and open layered porous structure of NiFe-LDH nanosheets results in the contraction of the lattice. Different reactive and conventional dyes were taken as representative dyes to evaluate the activity of the as-synthesized photocatalysts. The enhanced electron absorption/donor effect between GQDs and NiFe-LDH, and the growth of oxygen-bridged Ni/Fe-C moieties enable the composite to exhibit better photocatalytic activity. Both photocatalytic activity and characterization results confirmed that the GQD@NiFe-LDH nanocomposite heterostructure synthesized at 160 °C by taking 10 mL of GQDs aqueous solution named GNFLDH10 has a higher degree of crystallinity and has the best photocatalytic efficiency compared to other reported visible light catalysts. Specifically, the above optimized GQD@NiFe-LDH photocatalyst is capable of photo-mineralizing 50 ppm of Reactive Green in 20 min, Reactive Red in 20 min, and Congo Red in 25 min respectively following a direct Z-scheme mechanism with substantial reusability.
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Affiliation(s)
- Manasi Jena
- Central Characterisation Department, CSIR-Institute of Minerals and Materials Technology (CSIR-IMMT), Bhubaneswar, 751013, Odisha, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, -201002, India
| | - Sagar Mallick
- Central Characterisation Department, CSIR-Institute of Minerals and Materials Technology (CSIR-IMMT), Bhubaneswar, 751013, Odisha, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, -201002, India
| | - Ashutosh Rath
- Central Characterisation Department, CSIR-Institute of Minerals and Materials Technology (CSIR-IMMT), Bhubaneswar, 751013, Odisha, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, -201002, India
| | - Manas Kumar Dalai
- Central Characterisation Department, CSIR-Institute of Minerals and Materials Technology (CSIR-IMMT), Bhubaneswar, 751013, Odisha, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, -201002, India
| | - Dipti P Das
- Central Characterisation Department, CSIR-Institute of Minerals and Materials Technology (CSIR-IMMT), Bhubaneswar, 751013, Odisha, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, -201002, India
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Mukhair H, Halim Abdullah A, Adlan Mohd Hir Z, Syazwani Osman N, Zainal Z, Hong Ngee L. In-depth investigation on the photostability and charge separation mechanism of Ag3PO4/g-C3N4 photocatalyst towards very low visible light intensity. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Ag3PO4 and Ag3PO4–based visible light active photocatalysts: Recent progress, synthesis, and photocatalytic applications. CATAL COMMUN 2022. [DOI: 10.1016/j.catcom.2022.106556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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6
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Environmentally-friendly carbon nanomaterials for photocatalytic hydrogen production. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63994-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Abdul Nasir J, Munir A, Ahmad N, Haq TU, Khan Z, Rehman Z. Photocatalytic Z-Scheme Overall Water Splitting: Recent Advances in Theory and Experiments. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2105195. [PMID: 34617345 DOI: 10.1002/adma.202105195] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/23/2021] [Indexed: 06/13/2023]
Abstract
Photocatalytic water splitting is considered one of the most important and appealing approaches for the production of green H2 to address the global energy demand. The utmost possible form of artificial photosynthesis is a two-step photoexcitation known as "Z-scheme", which mimics the natural photosystem. This process solely relies on the effective coupling and suitable band positions of semiconductors (SCs) and redox mediators for the purpose to catalyze the surface chemical reactions and significantly deter the backward reaction. In recent years, the Z-scheme strategies and their key role have been studied progressively through experimental approaches. In addition, theoretical studies based on density functional theory have provided detailed insight into the mechanistic aspects of some breathtakingly complex problems associated with hydrogen evolution reaction and oxygen evolution reaction. In this context, this critical review gives an overview of the fundamentals of Z-scheme photocatalysis, including both theoretical and experimental advancements in the field of photocatalytic water splitting, and suggests future perspectives.
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Affiliation(s)
- Jamal Abdul Nasir
- Kathleen Lonsdale Materials Chemistry, Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
- Department of Chemistry, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Akhtar Munir
- Department of Chemistry, University of Sialkot, 1 Km, main Daska road, Sialkot, Punjab, 51310, Pakistan
- Department of Chemistry & Chemical Engineering, SBA School of Science & Engineering, Lahore University of Management Sciences (LUMS), DHA, Lahore, 54792, Pakistan
| | - Naveed Ahmad
- Institute of Pharmaceutical Science, Faculty of Life Science and Medicine, King's College London, 150 Stamford Street, London, SE1 9NH, UK
- University of Swat. Charbagh, Swat, Khyber Pakhtunkhwa, Pakistan
| | - Tanveer Ul Haq
- Sustainable Energy Engineering, Frank H. Dotterweich College of Engineering, Texas A&M University, Kingsville, TX, 78363-8202, USA
| | - Zaibunisa Khan
- Kathleen Lonsdale Materials Chemistry, Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Ziaur Rehman
- Kathleen Lonsdale Materials Chemistry, Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
- Department of Chemistry, Quaid-i-Azam University, Islamabad, 45320, Pakistan
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8
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Nooriha Najafabadi M, Ghanbari H, Naghizadeh R. Graphene/silver-based composites and coating on dead coral for degradation of organic pollution using the Z-scheme mechanism. RSC Adv 2021; 11:19890-19901. [PMID: 35479252 PMCID: PMC9033761 DOI: 10.1039/d1ra01239h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 05/13/2021] [Indexed: 12/14/2022] Open
Abstract
A high-performance photocatalytic nanocomposite consisting of silver phosphate-based particles with GO and RGO was synthesized by co-precipitation and hydrothermal methods. Ag3PO4 was prepared by a co-precipitation method. The as-prepared Ag3PO4 nanocomposites were characterized by different analyses. The results demonstrated that the Ag3PO4 particles were well dispersed on the graphene-based surfaces. The photocatalytic performance of the GO/RGO/Ag3PO4 nanocomposite was evaluated for the photodegradation of methylene blue (MB) under exposure to visible light (xenon lamp λ > 400 nm). The degradation rate was about 98% in 5 min. The enhancement in photocatalytic performance is attributed to the simultaneous presence of RGO and GO, which show significantly high absorption of organic molecules on the surface of GO/RGO, allowing the effective transfer and separation of photogenerated electrons. In addition, this modified structure can be in situ synthesized on dead coral structures that can be used in future real case-studies of the degradation of other organic pollutants. The ingredient of these composites, however, is about 93% Ag3PO4. A high-performance photocatalytic nanocomposite consisting of silver phosphate-based particles with GO and RGO was synthesized by co-precipitation and hydrothermal methods.![]()
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Affiliation(s)
- Maedeh Nooriha Najafabadi
- School of Metallurgy & Materials Engineering, Iran University of Science and Technology (IUST) Narmak Tehran Iran +98 21 73228823
| | - Hajar Ghanbari
- School of Metallurgy & Materials Engineering, Iran University of Science and Technology (IUST) Narmak Tehran Iran +98 21 73228823
| | - Rahim Naghizadeh
- School of Metallurgy & Materials Engineering, Iran University of Science and Technology (IUST) Narmak Tehran Iran +98 21 73228823
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9
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Jin H, Dong J, Qu X. Magnetic organic polymer gel decorating Ag3PO4 as Z-scheme photocatalyst for water decontamination. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126160] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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10
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Ouyang K, Jiang N, Xue W, Xie S. Enhanced photocatalytic activities of visible light-responsive Ag3PO4-GO photocatalysts for oxytetracycline hydrochloride degradation. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125312] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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11
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Li Z, Chen T, Liu S, Zhao M, Chen K, Chen D, Chen J. Large-scale pattern fabrication of 3D rGO-Ag@Ag3PO4 hydrogel composite photocatalyst with the excellent synergistic effect of adsorption and photocatalysis degradation. Catal Today 2020. [DOI: 10.1016/j.cattod.2018.07.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Al Kausor M, Gupta SS, Chakrabortty D. Ag3PO4-based nanocomposites and their applications in photodegradation of toxic organic dye contaminated wastewater: Review on material design to performance enhancement. JOURNAL OF SAUDI CHEMICAL SOCIETY 2020. [DOI: 10.1016/j.jscs.2019.09.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Enhanced performance of Ag3PO4/Fe3O4/GO bifunctional catalysts on p-chlorophenol degradation in advanced catalytic oxidation systems. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123803] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Samal A, Das DP, Madras G. Repercussion of Solid state vs. Liquid state synthesized p-n heterojunction RGO-copper phosphate on proton reduction potential in water. Sci Rep 2018; 8:2881. [PMID: 29440760 PMCID: PMC5811611 DOI: 10.1038/s41598-018-21239-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 01/31/2018] [Indexed: 11/10/2022] Open
Abstract
The same copper phosphate catalysts were synthesized by obtaining the methods involving solid state as well as liquid state reactions in this work. And then the optimised p-n hybrid junction photocatalysts have been synthesized following the same solid/liquid reaction pathways. The synthesized copper phosphate photocatalyst has unique rod, flower, caramel-treat-like morphology. The Mott-Schottky behavior is in accordance with the expected behavior of n-type semiconductor and the carrier concentration was calculated using the M-S analysis for the photocatalyst. And for the p-n hybrid junction of 8RGO-Cu3(PO4)2-PA (PA abbreviated for photoassisted synthesis method), 8RGO-Cu3(PO4)2-EG(EG abbreviated for Ethylene Glycol based synthesis method), 8RGO-Cu3(PO4)2-PEG (PEG abbreviated for Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol based synthesis method)the amount of H2 synthesized was 7500, 6500 and 4500 µmol/h/g, respectively. The excited electrons resulting after the irradiation of visible light on the CB of p-type reduced graphene oxide (RGO) migrate easily to n-type Cu3(PO4)2 via. the p-n junction interfaces and hence great charge carrier separation was achieved.
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Affiliation(s)
- Alaka Samal
- Academy of Scientific and Innovative Research, CSIR- Institute of Minerals and Materials Technology, Bhubaneswar, 751013, Odisha, India.,Colloids and Material Chemistry, CSIR- Institute of Minerals and Materials Technology, Bhubaneswar, 751013, Odisha, India
| | - Dipti P Das
- Academy of Scientific and Innovative Research, CSIR- Institute of Minerals and Materials Technology, Bhubaneswar, 751013, Odisha, India. .,Colloids and Material Chemistry, CSIR- Institute of Minerals and Materials Technology, Bhubaneswar, 751013, Odisha, India.
| | - Giridhar Madras
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, 560 012, India
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15
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Liu G, Zhao X, Zhang J, Liu S, Sha J. Z-scheme Ag3PO4/POM/GO heterojunction with enhanced photocatalytic performance for degradation and water splitting. Dalton Trans 2018; 47:6225-6232. [DOI: 10.1039/c8dt00431e] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
To develop solar light-driven photocatalysts with high activity and structural stability, Ag3PO4/POM/GO heterojunction has been successfully prepared by a facile method at room temperature.
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Affiliation(s)
- Guodong Liu
- Department of Chemistry and Chemical Engineering
- Jining University
- Qufu 273100
- PR China
| | - Xinfu Zhao
- Shandong provincial key laboratory for special silicone-containing materials
- Advanced materials institute
- QiLu University of Technology (Shandong Academy of Sciences)
- Jinan 250100
- P. R. China
| | - Jian Zhang
- Department of Chemistry and Chemical Engineering
- Jining University
- Qufu 273100
- PR China
| | - Shaojie Liu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- P. R. China
| | - Jingquan Sha
- Department of Chemistry and Chemical Engineering
- Jining University
- Qufu 273100
- PR China
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16
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Zhou T, Zhang G, Yang H, Zhang H, Suo R, Xie Y, Liu G. Fabrication of Ag3PO4/GO/NiFe2O4 composites with highly efficient and stable visible-light-driven photocatalytic degradation of rhodamine B. RSC Adv 2018; 8:28179-28188. [PMID: 35542723 PMCID: PMC9084322 DOI: 10.1039/c8ra02962h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 07/19/2018] [Indexed: 12/23/2022] Open
Abstract
Effective visible-light-driven Ag3PO4/GO/NiFe2O4Z-scheme magnetic composites were successfully fabricated by a simple ion-exchange deposition method. The Ag3PO4/GO/NiFe2O4 (8%) composite exhibited excellent photocatalytic activity (degradation efficiency was ∼96% within 15 min and kinetic constant reached 0.1956 min−1) and stability when compared to Ag3PO4, NiFe2O4, and Ag3PO4/NiFe2O4 for rhodamine B (RhB) degradation. Furthermore, by electrochemical and fluorescence measurements, the Ag3PO4/GO/NiFe2O4 (8%) material also showed larger transient photocurrent, lower impedance, and longer fluorescence lifetime (7.82 ns). Comparing the activity result dependence with characterization results, it was indicated that photocatalytic activity depended on fast charge transfer from Ag3PO4 to NiFe2O4 through GO sheet. The h+ and ·O2− species played important roles in RhB degradation under visible-light. A possible Z-scheme mechanism is proposed over the Ag3PO4/GO/NiFe2O4 (8%) composite. This study might provide a promising visible light responsive photocatalyst for the photocatalytic degradation of organic dyes in wastewater. Effective visible-light-driven Ag3PO4/GO/NiFe2O4Z-scheme magnetic composites were successfully fabricated by a simple ion-exchange deposition method. The composites exhibited excellent photocatalytic activity and stability for RhB degradation.![]()
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Affiliation(s)
- Tianhong Zhou
- School of Environmental and Municipal Engineering
- Lanzhou Jiaotong University
- Lanzhou 730000
- P. R. China
- Research & Development Center for Eco-material and Eco-chemistry
| | - Guozhen Zhang
- School of Environmental and Municipal Engineering
- Lanzhou Jiaotong University
- Lanzhou 730000
- P. R. China
| | - Hao Yang
- School of Environmental and Municipal Engineering
- Lanzhou Jiaotong University
- Lanzhou 730000
- P. R. China
| | - Hongwei Zhang
- School of Environmental and Municipal Engineering
- Lanzhou Jiaotong University
- Lanzhou 730000
- P. R. China
| | - Ruini Suo
- Research & Development Center for Eco-material and Eco-chemistry
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- P. R. China
| | - Yingshuang Xie
- Gansu Import and Export Inspection and Quarantine Bureau Inspection and Quarantine Integrated Technology Center
- Lanzhou 730000
- P. R. China
| | - Gang Liu
- Research & Development Center for Eco-material and Eco-chemistry
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- P. R. China
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17
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Wei N, Cui H, Wang M, Wang X, Song X, Ding L, Tian J. Highly efficient photocatalytic activity of Ag3PO4/Ag/ZnS(en)0.5 photocatalysts through Z-scheme photocatalytic mechanism. RSC Adv 2017. [DOI: 10.1039/c7ra01001j] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel Z-scheme Ag3PO4/Ag/ZnS(en)0.5 composite material was successfully prepared via a facile hydrothermal method and in situ precipitation.
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Affiliation(s)
- Na Wei
- School of Materials Science and Engineering
- Shandong University of Science and Technology
- Qingdao 266590
- China
| | - Hongzhi Cui
- School of Materials Science and Engineering
- Shandong University of Science and Technology
- Qingdao 266590
- China
| | - Mingliang Wang
- School of Materials Science and Engineering
- Shandong University of Science and Technology
- Qingdao 266590
- China
| | - Xinzhen Wang
- School of Materials Science and Engineering
- Shandong University of Science and Technology
- Qingdao 266590
- China
| | - Xiaojie Song
- School of Materials Science and Engineering
- Shandong University of Science and Technology
- Qingdao 266590
- China
| | - Lei Ding
- School of Materials Science and Engineering
- Shandong University of Science and Technology
- Qingdao 266590
- China
| | - Jian Tian
- School of Materials Science and Engineering
- Shandong University of Science and Technology
- Qingdao 266590
- China
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18
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Samal A, Swain S, Satpati B, Das DP, Mishra BK. 3 D Co 3 (PO 4 ) 2 -Reduced Graphene Oxide Flowers for Photocatalytic Water Splitting: A Type II Staggered Heterojunction System. CHEMSUSCHEM 2016; 9:3150-3160. [PMID: 27863056 DOI: 10.1002/cssc.201601214] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 09/27/2016] [Indexed: 06/06/2023]
Abstract
The design, synthesis, and photoelectrochemical characterization of Co3 (PO4 )2 , a hydrogen evolving catalyst modified with reduced graphene oxide (RGO), is reported. The 3 D flowerlike Co3 (PO4 )2 heterojunction system, consisting of 3 D flowerlike Co3 (PO4 )2 and RGO sheets, was synthesized by a one-pot in situ photoassisted method under visible-light irradiation, which was achieved without the addition of surfactant or a structure-directing reagent. For the first time, Co3 (PO4 )2 is demonstrated to act as a hydrogen evolving catalyst rather than being used as an oxygen evolving photoanode. In particular, 3 D flowerlike Co3 (PO4 )2 anchored to RGO nanosheets is shown to possess dramatically improved photocatalytic activity. This enhanced photoactivity is mainly due to the staggered type II heterojunction system, in which photoinduced electrons from 3 D flowerlike Co3 (PO4 )2 transfer to the RGO sheets and result in decreased charge recombination, as evidenced by photoluminescence spectroscopy. The band gap of Co3 (PO4 )2 was calculated to be 2.35 eV by the Kubelka-Munk method. Again, the Co3 (PO4 )2 semiconductor displays n-type behavior, as observed from Mott-Schottky measurements. These RGO-Co3 (PO4 )2 conjugates are active in the visible range of solar light for water splitting and textile dye degradation, and can be used towards the development of greener and cheaper photocatalysts by exploiting solar light.
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Affiliation(s)
- Alaka Samal
- Academy of Scientific and Innovative Research (AcSIR), New Delhi -, 110 025, India
- Colloids and Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, 751 013, India
| | - Smrutirekha Swain
- Academy of Scientific and Innovative Research (AcSIR), New Delhi -, 110 025, India
- Colloids and Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, 751 013, India
| | - Biswarup Satpati
- Surface Physics and Material Science Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata, 700 064, India
| | - Dipti Prakasini Das
- Academy of Scientific and Innovative Research (AcSIR), New Delhi -, 110 025, India
- Colloids and Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, 751 013, India
| | - Barada Kanta Mishra
- Academy of Scientific and Innovative Research (AcSIR), New Delhi -, 110 025, India
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