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Kavya P, Priya S, Pradeesh K, Sandeep K, Saranya KP, Thomas VL, Shanthil M. Thin silica shell on Ag 3PO 4 nanoparticles augments stability and photocatalytic reusability. RSC Adv 2023; 13:30643-30648. [PMID: 37881758 PMCID: PMC10594404 DOI: 10.1039/d3ra05023h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 09/16/2023] [Indexed: 10/27/2023] Open
Abstract
Semiconductor photocatalysts are promising cost-effective materials for degrading hazardous organic contaminants in water. Ag3PO4 is an efficient visible-light photocatalyst for the oxidation of water and dye degradation. The excited Ag3PO4 photocatalyst uses a hole to oxidise water or organic contaminants except the electron, which reduces Ag+ to Ag0. In the present study, the inherited disadvantage was overcome by a thin silica shell overcoating on Ag3PO4 nanoparticles. The silica-coated Ag3PO4 nanoparticles retain the photocatalytic activity even after five cycles of photodegradation, while the bare Ag3PO4 nanoparticles show a photocatalytic activity declined to half. The study demonstrates that the thin silica shell enhances the photostability, keeping the photocatalytic activity unaffected, even after several cycles of photodegradation of dyes. XPS analysis showed that the Ag0 formation on the surface of bare Ag3PO4 is greater than that on silica-coated Ag3PO4, which declines the photocatalytic activity of Ag3PO4 after five cycles of photodegradation. Electrochemical studies identified that the intermediates, such as OH˙ and O2-, formed during water oxidation play a crucial role in the photodegradation of dyes. This study can provide insights into the design of core-shell semiconductor nanostructures for reusable photocatalytic applications.
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Affiliation(s)
- Padmanabhan Kavya
- Department of Chemistry, Government Victoria College Palakkad 678001 Kerala India
| | | | - Kannan Pradeesh
- Department of Physics, Government Victoria College Palakkad 678001 Kerala India
| | - Kulangara Sandeep
- Department of Chemistry, Government Victoria College Palakkad 678001 Kerala India
| | - Karisseri P Saranya
- Department of Chemistry, Government Victoria College Palakkad 678001 Kerala India
| | | | - M Shanthil
- Department of Chemistry, Government Victoria College Palakkad 678001 Kerala India
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2
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Liu Q, Meng Y, Liu Q, Xu M, Hu Y, Chen S. Synthesis of Ag 3PO 4/Ag/g-C 3N 4 Composite for Enhanced Photocatalytic Degradation of Methyl Orange. Molecules 2023; 28:6082. [PMID: 37630333 PMCID: PMC10459574 DOI: 10.3390/molecules28166082] [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: 07/22/2023] [Revised: 08/14/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023] Open
Abstract
In this study, we have successfully constructed Ag3PO4/Ag/g-C3N4 heterojunctions via the hydrothermal method, which displays a wide photo-absorption range. The higher photocurrent intensity of Ag3PO4/Ag/g-C3N4 indicates that the separation efficiency of the photogenerated electron-hole pairs is higher than that of both Ag3PO4 and Ag/g-C3N4 pure substances. It is confirmed that the efficient separation of photogenerated electron-hole pairs is attributed to the heterojunction of the material. Under visible light irradiation, Ag3PO4/Ag/g-C3N4-1.6 can remove MO (~90%) at a higher rate than Ag3PO4 or Ag/g-C3N4. Its degradation rate is 0.04126 min-1, which is 4.23 and 6.53 times that of Ag/g-C3N4 and Ag3PO4, respectively. After five cycles of testing, the Ag3PO4/Ag/g-C3N4 photocatalyst still maintained high photocatalytic activity. The excellent photocatalysis of Ag3PO4/Ag/g-C3N4-1.6 under ultraviolet-visible light is due to the efficient separation of photogenerated carriers brought about by the construction of the Ag3PO4/Ag/g-C3N4 heterostructure. Additionally, Ag3PO4/Ag/g-C3N4 specimens can be easily recycled with high stability. The effects of hydroxyl and superoxide radicals on the degradation process of organic compounds were studied using electron paramagnetic resonance spectroscopy and radical quenching experiments. Therefore, the Ag3PO4/Ag/g-C3N4 composite can be used as an efficient and recyclable UV-vis spectrum-driven photocatalyst for the purification of organic pollutants.
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Affiliation(s)
| | - Ying Meng
- School of Chemistry and Materials Engineering, Huainan Normal University, Huainan 232038, China; (Q.L.); (M.X.); (Y.H.); (S.C.)
| | - Qiman Liu
- School of Chemistry and Materials Engineering, Huainan Normal University, Huainan 232038, China; (Q.L.); (M.X.); (Y.H.); (S.C.)
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Elbashir AA, Shinger MI, Ma X, Lu X, Ahmed AY, Alnajjar AO. Fabrication of a Novel CNT-COO -/Ag 3PO 4@AgIO 4Composite with Enhanced Photocatalytic Activity under Natural Sunlight. Molecules 2023; 28:molecules28041586. [PMID: 36838576 PMCID: PMC9967086 DOI: 10.3390/molecules28041586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/28/2023] [Accepted: 02/01/2023] [Indexed: 02/11/2023] Open
Abstract
In this study, a carboxylated carbon nanotube-grafted Ag3PO4@AgIO4 (CNT-COO-/Ag3PO4@AgIO4) composite was synthesized through an in situ electrostatic deposition method. The synthesized composite was characterized by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), diffuse reflectance spectroscopy (DRS), and energy-dispersive X-ray spectroscopy (EDS). The electron transfer ability of the synthesized composite was studied using electrochemical impedance spectroscopy (EIS). The CNT-COO-/Ag3PO4@AgIO4 composite exhibited higher activity than CNT/Ag3PO4@AgIO4, Ag3PO4@AgIO4, and bare Ag3PO4. The material characterization and the detailed study of the various parameters thataffect the photocatalytic reaction revealed that the enhanced catalytic activity is related to the good interfacial interaction between CNT-COO and Ag3PO4. The energy band structure analysis is further considered as a reason for multi-electron reaction enhancement. The results and discussion in this study provide important information for the use of the functionalized CNT-COOH in the field of photocatalysis. Moreover, providinga new way to functionalize CNT viadifferent functional groups may lead to further development in the field of photocatalysis. This work could provide a new way to use natural sunlight to facilitate the practical application of photocatalysts toenvironmental issues.
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Affiliation(s)
- Abdalla A. Elbashir
- Department of Chemistry, College of Science, King Faisal University, Al-Hofuf 31982, Saudi Arabia
- Department of Chemistry, Faculty of Science, Khartoum University, P.O. Box 321, Khartoum 11111, Sudan
- Correspondence: (A.A.E.); (A.Y.A.); Tel.: +966-567254917 (A.A.E.); +966-543478704 (A.Y.A.)
| | - Mahgoub Ibrahim Shinger
- Department of Applied and Industrial Chemistry, Faculty of Pure and Applied Sciences, International University of Africa, Khartoum 11111, Sudan
| | - Xoafang Ma
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Amel Y. Ahmed
- Department of Chemistry, College of Science, King Faisal University, Al-Hofuf 31982, Saudi Arabia
- Chemistry and Nuclear Physics Institute, Sudan Atomic Energy Commission, P.O. Box 3001, Khartoum 11111, Sudan
- Correspondence: (A.A.E.); (A.Y.A.); Tel.: +966-567254917 (A.A.E.); +966-543478704 (A.Y.A.)
| | - Ahmed O. Alnajjar
- Department of Chemistry, College of Science, King Faisal University, Al-Hofuf 31982, Saudi Arabia
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Bortolotto V, Djellabi R, Giordana A, Cerrato G, Michele AD, Bianchi CL. Photocatalytic behaviour of Ag3PO4, Fe3O4 and Ag3PO4/Fe3O4 heterojunction towards the removal of organic pollutants and Cr(VI) from water: Efficiency and light-corrosion deactivation. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109516] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Duan M, Wu D, Ji Y, Tong H. Novel preparation of stable and highly photocatalytic Z-scheme Cs 3PW 12O 40/Ag 3PO 4 photocatalysts for the photocatalytic degradation of organic contaminants in water. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 85:887-899. [PMID: 35166708 DOI: 10.2166/wst.2022.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The Cs3PW12O40/Ag3PO4 (CsPW/Ag3PO4) heterojunction photocatalyst in this study was prepared using a simple chemical precipitation method. Spherical CsPW particles were successfully deposited on Ag3PO4 nanocrystals, all the as-prepared samples are characterized by X-ray diffraction pattern (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), UV visible spectroscopy (UV-Vis), and X-ray photoelectron spectroscopy (XPS). The catalyst activity in relation to rhodamine B (RhB) degradation was evaluated under visible light (λ > 420 nm). The CsPW/Ag3PO4 heterojunction photocatalyst can effectively degrade RhB. The Z-scheme 3% CsPW/Ag3PO4 heterojunction photocatalyst has a higher photocatalytic ability compared with the single-component photocatalyst CsPW or Ag3PO4. The comparatively high photocatalytic performance can be attributed to the high matching of the energy band position and close interface contact, suggesting an enhanced separation efficiency of the photoinduced carriers of the CsPW/Ag3PO4 heterojunction photocatalyst. The reactive species trapping experiments demonstrated photogenerated holes (h+) and superoxide radicals (•O2-) to be the main active components of photocatalytic degradation. A possible photocatalytic mechanism is subsequently proposed.
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Affiliation(s)
- Mengtian Duan
- College of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, People's Republic of China
| | - Daoxin Wu
- College of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, People's Republic of China
| | - Yu Ji
- College of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, People's Republic of China
| | - Haixia Tong
- College of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, People's Republic of China
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6
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7
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Wang S, Zhang W, Jia F, Fu H, Liu T, Zhang X, Liu B, Núñez-Delgado A, Han N. Novel Ag 3PO 4/boron-carbon-nitrogen photocatalyst for highly efficient degradation of organic pollutants under visible-light irradiation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 292:112763. [PMID: 34022648 DOI: 10.1016/j.jenvman.2021.112763] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 04/15/2021] [Accepted: 04/19/2021] [Indexed: 06/12/2023]
Abstract
Ag3PO4 is an indirect bandgap semiconductor with excellent photocatalytic activity. However, it has not been widely used so far for the treatment of polluted wastewaters. This scarce use in wastewater treatment can be mainly attributed to its large crystallite size, which would be due to rapid agglomeration during the synthesis process, as well as to the photo-corrosion problem affecting this material. Hence, it would be crucial to develop a photocatalytic system involving Ag3PO4 nanoparticles with enhanced properties, such as higher specific surface area and excellent photocatalytic stability. To meet this demand, a novel Ag3PO4/boron carbon nitrogen (Ag3PO4/BCN) composite photocatalyst was successfully prepared in the present study via electrostatically driven self-assembly and ion exchange processes. After characterization and assessment, it was shown that the as-prepared Ag3PO4/BCN nanocomposite photocatalyst not only contains smaller Ag3PO4 nanoparticles, but also exhibits an enhanced visible-light photocatalytic activity for Rhodamine B (RhB) Methyl Orange (MO) and Tetracycline (TC) and improved stability, without decrease after 5 cycles, compared with pure Ag3PO4 nanoparticles. Positive synergy between Ag3PO4 nanoparticles and BCN nanosheets, including the increase in the number of active adsorption sites, and the restriction of the formation of Ag due to the recombination of photogenerated electron-hole pairs in Ag3PO4 nanoparticles, are mainly responsible for the enhanced properties of the prepared catalyst. This study shows that Ag3PO4/BCN composite photocatalyst would be promising for wastewater treatment, which would be of clearly environmental and public health relevance.
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Affiliation(s)
- Shuo Wang
- Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo, Shandong, 255000, China
| | - Wei Zhang
- Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44, Leuven, 3001, Belgium
| | - Fuchao Jia
- Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo, Shandong, 255000, China.
| | - Hongling Fu
- Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo, Shandong, 255000, China
| | - Tingting Liu
- Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo, Shandong, 255000, China
| | - Xuan Zhang
- Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44, Leuven, 3001, Belgium
| | - Bo Liu
- Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo, Shandong, 255000, China.
| | - Avelino Núñez-Delgado
- Dept. Soil Sci. and Agric. Chem., Engineering Polytech. School, Campus Univ. Lugo, Univ. Santiago de Compostela, Spain
| | - Ning Han
- Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44, Leuven, 3001, Belgium.
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Zhao Q, Wang J, Li Z, Guo Y, Wang J, Tang B, Abudula A, Guan G. Heterostructured graphitic-carbon-nitride-nanosheets/copper(I) oxide composite as an enhanced visible light photocatalyst for decomposition of tetracycline antibiotics. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117238] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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9
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Khalid N, Mazia U, Tahir M, Niaz N, Javid MA. Photocatalytic degradation of RhB from an aqueous solution using Ag3PO4/N-TiO2 heterostructure. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113522] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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10
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Garg R, Mondal S, Sahoo L, Vinod CP, Gautam UK. Nanocrystalline Ag 3PO 4 for Sunlight- and Ambient Air-Driven Oxidation of Amines: High Photocatalytic Efficiency and a Facile Catalyst Regeneration Strategy. ACS APPLIED MATERIALS & INTERFACES 2020; 12:29324-29334. [PMID: 32484649 DOI: 10.1021/acsami.0c05961] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Selective oxidation of amines to imines using sunlight as clean and renewable energy source is an important but challenging chemical transformation because of high reactivity of the generated imines and lack of visible light-responsive materials with high conversion rates. In addition, oxygen gas has to be purged in the reaction mixture in order to increase the reaction efficiency which, in itself, is an energy-consuming process. Herein, we report, for the first time, the use of Ag3PO4 as an excellent photocatalyst for the oxidative coupling of benzyl amines induced by ambient air in the absence of any external source of molecular oxygen at room temperature. The conversion efficiency for the selective oxidation of benzyl amine was found to be greater than 95% with a selectivity of >99% after 40 min of light irradiation indicating an exceptionally high conversion efficiency with a rate constant of 0.002 min-1, a turnover frequency of 57 h-1, and a quantum yield of 19%, considering all of the absorbed photons. Ag3PO4, however, is known for its poor photostability owing to a positive conduction band position and a favorable reduction potential to metallic silver. Therefore, we further employed a simple catalyst regeneration strategy and showed that the catalyst can be recycled with negligible loss of activity and selectivity.
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Affiliation(s)
- Reeya Garg
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Sector 81, SAS Nagar, Mohali, Punjab 140306, India
| | - Sanjit Mondal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Sector 81, SAS Nagar, Mohali, Punjab 140306, India
| | - Lipipuspa Sahoo
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Sector 81, SAS Nagar, Mohali, Punjab 140306, India
| | - C P Vinod
- Catalysis and Inorganic Chemistry Division, CSIR-NCL, Pune 411008, India
| | - Ujjal K Gautam
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Sector 81, SAS Nagar, Mohali, Punjab 140306, India
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11
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Labaali Z, Kholtei S, Naja J. Valorization of phosphate waste rocks to Ag 3PO 4/hydroxyapatite for photocatalytic degradation of Rhodamine B under visible light irradiation. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 81:1894-1913. [PMID: 32666944 DOI: 10.2166/wst.2020.243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A silver phosphate/hydroxyapatite (Ag3PO4/HA) composite was produced from phosphate waste rocks, firstly by the valorization of these wastes to HA and then by the treatment of this prepared HA with a silver nitrate solution. A type of response surface methodology, Box-Behnken experimental design, was used to find optimum synthesis parameters (silver to HA weight ratios, calcination temperature and calcination time). The visible light photodegradation of Rhodamine B in aqueous solution was used as the experimental response. The analysis of variance for the results showed that silver weight ratio is the most influential parameter on photoactivity of the synthesized photocatalyst. The optimum conditions were predicted to give an RhB degradation yield of 98.609%/4 hours under visible light conditions. In this context, a Ag/HA weight ratio of 14%, a calcination temperature of 300 °C, and a calcination time of 30 min were found to be the optimum conditions. Samples synthesized under the optimum condition were characterized by the use of X-ray diffraction, X-ray fluorescence spectrometer, Fourier transform infrared spectrum analysis, scanning electron microscopy, transmission electron microscopy and ultraviolet-visible diffuse reflection spectroscopy. By comparison with pure HA, the characterization results clearly showed the successful synthesis of the Ag3PO4/HA composite.
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Affiliation(s)
- Zineb Labaali
- Faculty of Science and Technology, Laboratory of Applied Chemistry and Environment, University of Hassan I, BP. 577, Route de Casa, 26000 Settat, Morocco E-mail:
| | - Sanaê Kholtei
- Faculty of Science and Technology, Laboratory of Applied Chemistry and Environment, University of Hassan I, BP. 577, Route de Casa, 26000 Settat, Morocco E-mail:
| | - Jamal Naja
- Faculty of Science and Technology, Laboratory of Applied Chemistry and Environment, University of Hassan I, BP. 577, Route de Casa, 26000 Settat, Morocco E-mail:
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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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Liu J, Yang B, Gao M, You L, Zhang Y, Li Z, Guo L, Li T, Chen P, Liu M. Facile synthesis of new polyhedron-like WO3/butterfly-like Ag2MoO4 p–n junction photocatalysts with higher photocatalytic activity in UV/solar region light. NEW J CHEM 2020. [DOI: 10.1039/c9nj05801j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A series of novel efficient polyhedron-like WO3/butterfly-like Ag2MoO4 p–n junction photocatalysts (denoted as AMW-x) were designed and synthesized.
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Cruz-Filho J, Costa T, Lima M, Silva L, Santos R, Cavalcante L, Longo E, Luz G. Effect of different synthesis methods on the morphology, optical behavior, and superior photocatalytic performances of Ag3PO4 sub-microcrystals using white-light-emitting diodes. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.03.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Li Z, Wang X, Zhang J, Liang C, Lu L, Dai K. Preparation of Z-scheme WO3(H2O)0.333/Ag3PO4 composites with enhanced photocatalytic activity and durability. CHINESE JOURNAL OF CATALYSIS 2019. [DOI: 10.1016/s1872-2067(18)63165-1] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Duan Z, Deng L, Shi Z, Zhang H, Zeng H, Crittenden J. In situ growth of Ag-SnO2 quantum dots on silver phosphate for photocatalytic degradation of carbamazepine: Performance, mechanism and intermediates toxicity assessment. J Colloid Interface Sci 2019; 534:270-278. [DOI: 10.1016/j.jcis.2018.09.039] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 09/10/2018] [Accepted: 09/11/2018] [Indexed: 01/19/2023]
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17
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Zhou L, Cai M, Zhang X, Cui N, Chen G, Zou GY. Key role of hydrochar in heterogeneous photocatalytic degradation of sulfamethoxazole using Ag3PO4-based photocatalysts. RSC Adv 2019; 9:35636-35645. [PMID: 35528073 PMCID: PMC9074729 DOI: 10.1039/c9ra07843f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 10/28/2019] [Indexed: 12/24/2022] Open
Abstract
To overcome the practical application limitations of Ag3PO4 such as photocorrosion and relatively low efficiency of photogenerated carrier seperation, Ag3PO4 particles were loaded onto hydrochar. The particles in the composite had a smaller crystallite size and different phase structure with more edges than pure Ag3PO4 particles. The as-prepared composite catalyst exhibited a different photocatalytic performance for sulfamethoxazole (SMX) degradation when varying the mass ratio of hydrochar and Ag3PO4. In addition to higher SMX degradation efficiency, the composite exhibited much higher TOC degradation efficiency, recycling stability, and less-toxic intermediate production. The composites enhanced visible light response, and accelerated electron transfer and photogenerated carrier separation as well. The addition of H2O2 to the photocatalytic system enhanced the photocatalytic activity of the composite catalyst. According to a mechanistic examination, the hole (h+) is the dominant reactive species for SMX degradation. This study provides new insight into high-efficiency, low cost, and easily prepared photocatalysts for pollution removal from water. To overcome the practical application limitations of Ag3PO4 such as photocorrosion and relatively low efficiency of photogenerated carrier seperation, Ag3PO4 particles were loaded onto hydrochar.![]()
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Affiliation(s)
- Li Zhou
- Institute of Eco-environment and Plant Protection
- Shanghai Academy of Agricultural Sciences
- Shanghai 201403
- China
- Shanghai Engineering Research Centre of Low-carbon Agriculture
| | - Min Cai
- Institute of Eco-environment and Plant Protection
- Shanghai Academy of Agricultural Sciences
- Shanghai 201403
- China
- Shanghai Engineering Research Centre of Low-carbon Agriculture
| | - Xu Zhang
- Institute of Eco-environment and Plant Protection
- Shanghai Academy of Agricultural Sciences
- Shanghai 201403
- China
- Shanghai Engineering Research Centre of Low-carbon Agriculture
| | - Naxin Cui
- Institute of Eco-environment and Plant Protection
- Shanghai Academy of Agricultural Sciences
- Shanghai 201403
- China
- Shanghai Engineering Research Centre of Low-carbon Agriculture
| | - Guifa Chen
- Institute of Eco-environment and Plant Protection
- Shanghai Academy of Agricultural Sciences
- Shanghai 201403
- China
- Shanghai Engineering Research Centre of Low-carbon Agriculture
| | - Guo-yan Zou
- Institute of Eco-environment and Plant Protection
- Shanghai Academy of Agricultural Sciences
- Shanghai 201403
- China
- Shanghai Engineering Research Centre of Low-carbon Agriculture
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18
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Shape-dependent enhanced photocatalytic effect under visible light of Ag3PO4 particles. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.08.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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19
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Askari P, Mohebbi S, Do TO. High performance plasmonic activation of Ag on β-Ag2WO4/BiVO4 as nanophotocatalyst for oxidation of alcohols by incident visible light. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.08.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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20
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Kim S, Wang Y, Zhu M, Fujitsuka M, Majima T. Facet Effects of Ag3
PO4
on Charge-Carrier Dynamics: Trade-Off Between Photocatalytic Activity and Charge-Carrier Lifetime. Chemistry 2018; 24:14928-14932. [DOI: 10.1002/chem.201803505] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Sooyeon Kim
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1 Ibaraki, Osaka 567-0047 Japan
- Present address: Laboratory for Cell System Control; Center for Biosystem Dynamics Research; RIKEN, 6-2-3 Furuedai; Suita Osaka 565-0874 Japan
| | - Yue Wang
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1 Ibaraki, Osaka 567-0047 Japan
| | - Mingshan Zhu
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1 Ibaraki, Osaka 567-0047 Japan
| | - Mamoru Fujitsuka
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1 Ibaraki, Osaka 567-0047 Japan
| | - Tetsuro Majima
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1 Ibaraki, Osaka 567-0047 Japan
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Jo WK, Kim YG, Tonda S. Hierarchical flower-like NiAl-layered double hydroxide microspheres encapsulated with black Cu-doped TiO 2 nanoparticles: Highly efficient visible-light-driven composite photocatalysts for environmental remediation. JOURNAL OF HAZARDOUS MATERIALS 2018; 357:19-29. [PMID: 29859461 DOI: 10.1016/j.jhazmat.2018.05.038] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/12/2018] [Accepted: 05/14/2018] [Indexed: 06/08/2023]
Abstract
Herein, highly efficient composite photocatalysts comprising black Cu-doped TiO2 nanoparticles (BCT) encapsulated within hierarchical flower-like NiAl-layered double hydroxide (LDH) microspheres were fabricated via a one-step hydrothermal route. Cu-doping and subsequent reduction treatment led to extended visible-light absorption of TiO2 in the resulting composites, as confirmed by ultraviolet-visible diffuse reflectance spectral analysis. Moreover, thorough investigations confirmed the strong interactions between LDH and BCT in the resulting BCT/LDH composites. Notably, the BCT/LDH composites exhibited remarkable performance in the degradation of hazardous materials (methyl orange and isoniazid), superior to that of the individual components, reference P25, and P25/LDH under visible-light irradiation. Moreover, the BCT/LDH composite containing 30 wt% of BCT displayed the highest photocatalytic performance among the synthesized photocatalysts and also exhibited high stability during recycling tests with no obvious change in the activity. The superior photodegradation activity of the BCT/LDH composites was primarily attributed to efficient transfer and separation of the photoinduced charge carriers, resulting from the intimate contact interfaces between LDH and BCT. This approach represents a promising route for the rational design of highly efficient and visible-light-active LDH-based composite photocatalysts for application in energy harvesting and environmental protection.
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Affiliation(s)
- Wan-Kuen Jo
- Department of Environmental Engineering, Kyungpook National University, Daegu 702-701, South Korea
| | - Yeong-Gyeong Kim
- Department of Environmental Engineering, Kyungpook National University, Daegu 702-701, South Korea
| | - Surendar Tonda
- Department of Environmental Engineering, Kyungpook National University, Daegu 702-701, South Korea.
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22
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Behzadifard Z, Shariatinia Z, Jourshabani M. Novel visible light driven CuO/SmFeO3 nanocomposite photocatalysts with enhanced photocatalytic activities for degradation of organic pollutants. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.04.126] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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23
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Tseng CS, Wu T, Lin YW. Facile Synthesis and Characterization of Ag₃PO₄ Microparticles for Degradation of Organic Dyestuffs under White-Light Light-Emitting-Diode Irradiation. MATERIALS 2018; 11:ma11050708. [PMID: 29710872 PMCID: PMC5978085 DOI: 10.3390/ma11050708] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 04/27/2018] [Accepted: 04/28/2018] [Indexed: 01/31/2023]
Abstract
This study demonstrated facile synthesis of silver phosphate (Ag3PO4) photocatalysts for the degradation of organic contaminants. Ag3PO4 microparticles from different concentrations of precursor, AgNO3, were produced and characterized by scanning electron microscopy, powder X-ray diffraction, and UV–visible diffuse reflectance spectroscopy. Degradation rates of methylene blue (MB) and phenol were measured in the presence of microparticles under low-power white-light light-emitting-diode (LED) irradiation and the reaction rate followed pseudo-first-order kinetics. The prepared Ag3PO4 microparticles displayed considerably high photocatalytic activity (>99.8% degradation within 10 min). This can be attributed to the microparticles’ large surface area, the low recombination rate of electron–hole pairs and the higher charge separation efficiency. The practicality of the Ag3PO4 microparticles was validated by the degradation of MB, methyl red, acid blue 1 and rhodamine B under sunlight in environmental water samples, demonstrating the benefit of the high photocatalytic activity from Ag3PO4 microparticles.
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Affiliation(s)
- Chi-Shun Tseng
- Department of Chemistry, National Changhua University of Education, Changhua City 500, Taiwan.
| | - Tsunghsueh Wu
- Department of Chemistry, University of Wisconsin-Platteville, 1 University Plaza, Platteville, WI 53818-3099, USA.
| | - Yang-Wei Lin
- Department of Chemistry, National Changhua University of Education, Changhua City 500, Taiwan.
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24
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Agbe H, Raza N, Dodoo-Arhin D, Chauhan A, Kumar RV. H 2O 2 rejuvenation-mediated synthesis of stable mixed-morphology Ag 3PO 4 photocatalysts. Heliyon 2018; 4:e00599. [PMID: 29862361 PMCID: PMC5968178 DOI: 10.1016/j.heliyon.2018.e00599] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 03/10/2018] [Accepted: 04/04/2018] [Indexed: 11/06/2022] Open
Abstract
Ag3PO4 photocatalyst has attracted interest of the scientific community in recent times due to its reported high efficiency for water oxidation and dye degradation. However, Ag3PO4 photo-corrodes if electron accepter such as AgNO3 is not used as scavenger. Synthesis of efficient Ag3PO4 followed by a simple protocol for regeneration of the photocatalyst is therefore a prerequisite for practical application. Herein, we present a facile method for the synthesis of a highly efficient Ag3PO4, whose photocatalytic efficiency was demonstrated using 3 different organic dyes: Methylene Blue (MB), Methyl orange (MO) and Rhodamine B (RhB) organic dyes for degradation tests. Approximately, 19 % of Ag3PO4 is converted to Ag0 after 4.30 hours of continuous UV-Vis irradiation in presence of MB organic dye. We have shown that the Ag/Ag3PO4 composite can be rejuvenated by a simple chemical oxidation step after several cycles of photocatalysis tests. At an optimal pH of 6.5, a mixture of cubic, rhombic dodecahedron, nanosphere and nanocrystals morphologies of the photocatalyst was formed. H2O2 served as the chemical oxidant to re-insert the surface metallic Ag into the Ag3PO4 photocatalyst but also as the agent that can control morphology of the regenerated as-prepared photocatalyst without the need for any other morphology controlling Agent (MCA). Surprisingly, the as- regenerated Ag3PO4 was found to have higher photocatalytic reactivity than the freshly made material and superior at least 17 times in comparison with the conventional Degussa TiO2, and some of TiO2 composites tested in this work.
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Affiliation(s)
- Henry Agbe
- Department of Materials Science & Engineering, University of Ghana, P. O. Box LG 77, Legon-Accra, Ghana.,Department of Materials Science & Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK
| | - Nadeem Raza
- Department of Materials Science & Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK.,Government Emerson College, Bahaudin Zakriya University, Multan, Pakistan
| | - David Dodoo-Arhin
- Department of Materials Science & Engineering, University of Ghana, P. O. Box LG 77, Legon-Accra, Ghana.,INCREASE (FR CNRS 3707), ENSIP, Université de Poitiers, 1 rue Marcel Doré, TSA41105, 86073 Poitiers Cedex 9, France
| | - Aditya Chauhan
- Department of Materials Science & Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK
| | - Ramachandran Vasant Kumar
- Department of Materials Science & Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK
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Reheman A, Tursun Y, Dilinuer T, Halidan M, Kadeer K, Abulizi A. Facile One-Step Sonochemical Synthesis and Photocatalytic Properties of Graphene/Ag 3PO 4 Quantum Dots Composites. NANOSCALE RESEARCH LETTERS 2018; 13:70. [PMID: 29500750 PMCID: PMC5834413 DOI: 10.1186/s11671-018-2466-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 01/30/2018] [Indexed: 05/16/2023]
Abstract
In this study, a novel graphene/Ag3PO4 quantum dot (rGO/Ag3PO4 QD) composite was successfully synthesized via a facile one-step photo-ultrasonic-assisted reduction method for the first time. The composites were analyzed by various techniques. According to the obtained results, Ag3PO4 QDs with a size of 1-4 nm were uniformly dispersed on rGO nanosheets to form rGO/Ag3PO4 QD composites. The photocatalytic activity of rGO/Ag3PO4 QD composites was evaluated by the decomposition of methylene blue (MB). Meanwhile, effects of the surfactant dosage and the amount of rGO on the photocatalytic activity were also investigated. It was found that rGO/Ag3PO4 QDs (WrGO:Wcomposite = 2.3%) composite exhibited better photocatalytic activity and stability with degrading 97.5% of MB within 5 min. The improved photocatalytic activities and stabilities were majorly related to the synergistic effect between Ag3PO4 QDs and rGO with high specific surface area, which gave rise to efficient interfacial transfer of photogenerated electrons and holes on both materials. Moreover, possible formation and photocatalytic mechanisms of rGO/Ag3PO4 QDs were proposed. The obtained rGO/Ag3PO4 QDs photocatalysts would have great potentials in sewage treatment and water splitting.
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Affiliation(s)
- Abulajiang Reheman
- Key Laboratory of Coal Conversion & Chemical Engineering Process (Xinjiang Uyghur Autonomous Region), College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, 830046 People’s Republic of China
| | - Yalkunjan Tursun
- Key Laboratory of Coal Conversion & Chemical Engineering Process (Xinjiang Uyghur Autonomous Region), College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, 830046 People’s Republic of China
| | - Talifu Dilinuer
- Key Laboratory of Coal Conversion & Chemical Engineering Process (Xinjiang Uyghur Autonomous Region), College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, 830046 People’s Republic of China
| | - Maimaiti Halidan
- Key Laboratory of Coal Conversion & Chemical Engineering Process (Xinjiang Uyghur Autonomous Region), College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, 830046 People’s Republic of China
| | - Kuerbangnisha Kadeer
- Key Laboratory of Coal Conversion & Chemical Engineering Process (Xinjiang Uyghur Autonomous Region), College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, 830046 People’s Republic of China
| | - Abulikemu Abulizi
- Key Laboratory of Coal Conversion & Chemical Engineering Process (Xinjiang Uyghur Autonomous Region), College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, 830046 People’s Republic of China
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26
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Zhang GY, Wei XM, Bai X, Liu CM, Wang BY, Liu JW. Ethanol–water ambient precipitation of {111} facets exposed Ag3PO4 tetrahedra and its hybrid with graphene oxide for outstanding photoactivity and stability. Inorg Chem Front 2018. [DOI: 10.1039/c8qi00105g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The work presents the combinative merits of {111} facet effect and the GO hybrid of Ag3PO4 photocatalyst with dramatically improved photocatalytic activity and admirable circulation runs for water treatment.
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Affiliation(s)
- Guo-Ying Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- China
| | - Xue-Min Wei
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- China
| | - Xue Bai
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- China
| | - Chun-Mei Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- China
| | - Bing-Yu Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- China
| | - Jing-Wang Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry
- Ministry of Education; College of Chemistry
- Tianjin Normal University
- Tianjin 300387
- China
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27
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Sepahvand S, Farhadi S. Fullerene-modified magnetic silver phosphate (Ag3PO4/Fe3O4/C60) nanocomposites: hydrothermal synthesis, characterization and study of photocatalytic, catalytic and antibacterial activities. RSC Adv 2018; 8:10124-10140. [PMID: 35540839 PMCID: PMC9078731 DOI: 10.1039/c8ra00069g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 03/05/2018] [Indexed: 12/27/2022] Open
Abstract
In this work, fullerene-modified magnetic silver phosphate (Ag3PO4/Fe3O4/C60) nanocomposites with efficient visible light photocatalytic and catalytic activity were fabricated by a simple hydrothermal approach. The composition and structure of the obtained new magnetically recyclable ternary nanocomposites were completely characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, Brunauer–Emmett–Teller (BET) specific surface area analysis, vibrating sample magnetometery (VSM), diffuse reflectance spectroscopy (DRS), field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray (EDX) spectroscopy and transmission electron microscopy (TEM). This novel magnetically recyclable heterogeneous fullerene-modified catalyst was tested for the H2O2-assisted photocatalytic degradation of MB dye under visible light. The results show that about 95% of the MB (25 mg L−1, 50 ml) was degraded by the Ag3PO4/Fe3O4/C60 nanocomposite within 5 h under visible light irradiation. The catalytic performance of the Ag3PO4/Fe3O4/C60 nanocomposite was then examined for 4-nitrophenol (4-NP) reduction using NaBH4. This new nanocomposite showed that 4-NP was reduced to 4-aminophenol (4-AP) in 98% yield with an aqueous solution of NaBH4. In both photocatalytic and catalytic reactions, the Ag3PO4/Fe3O4/C60 nanocomposite exhibited higher catalytic activity than pure Ag3PO4. Moreover, the Ag3PO4/Fe3O4/C60 nanocomposite could be magnetically separated from the reaction mixture and reused without any change in structure. The antibacterial activity of the nanocomposites was also investigated and they showed good antibacterial activity against a few human pathogenic bacteria. Fullerene-modified magnetic silver phosphate (Ag3PO4/Fe3O4/C60) nanocomposites prepared by a hydrothermal route were used as photocatalysts/catalysts for the efficient degradation and reduction of MB dye and 4-nitrophenol, respectively.![]()
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Affiliation(s)
- Shahnaz Sepahvand
- Department of Chemistry
- Lorestan University
- Khorramabad 68151-44316
- Iran
| | - Saeed Farhadi
- Department of Chemistry
- Lorestan University
- Khorramabad 68151-44316
- Iran
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28
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Wan S, Ou M, Zhong Q, Zhang S. Z-scheme CaIn2S4/Ag3PO4 nanocomposite with superior photocatalytic NO removal performance: fabrication, characterization and mechanistic study. NEW J CHEM 2018. [DOI: 10.1039/c7nj03588h] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Z-scheme CaIn2S4/Ag3PO4 photocatalyst with superior photocatalytic NO removal performance was fabricated and characterized, and mechanistic analysis was also carried out.
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Affiliation(s)
- Shipeng Wan
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- P. R. China
- Nanjing AIREP Environmental Protection Technology Co., Ltd
| | - Man Ou
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- P. R. China
- Nanjing AIREP Environmental Protection Technology Co., Ltd
| | - Qin Zhong
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- P. R. China
- Nanjing AIREP Environmental Protection Technology Co., Ltd
| | - Shule Zhang
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing
- P. R. China
- Nanjing AIREP Environmental Protection Technology Co., Ltd
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29
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Jiao W, Cheng Y, Zhang J, Che R. Self-Assembled 3D Hierarchical Copper Hydroxyphosphate Modified by the Oxidation of Copper Foil as a Recyclable, Wide Wavelength Photocatalyst. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:13649-13656. [PMID: 29111745 DOI: 10.1021/acs.langmuir.7b03157] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this work, three-dimensional flower-like and petal-like copper hydroxyphosphate Cu5(OH)4(PO4)2 (CHP) based on the self-assembly of numerous nanosheets has been successfully fabricated on a copper foil by a mild one-pot wet-chemical method without ligand assistance. This research contributes to the development of the method to change the morphology of the CHP active material by varying the degree of substrate oxidation. The two different CHP architectures were used to photocatalytically degrade rhodamine 6G (Rh 6G) under solar light, which can absorb wide-range light wavelength from the UV to the near-infrared region. They all exhibit high photocatalytic activity and good durability, which are potential candidates for high performance and recyclable wide wavelength photocatalysis.
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Affiliation(s)
- Wenling Jiao
- Advanced Materials Laboratory & Department of Chemistry, Fudan University , Shanghai 200433, People's Republic of China
| | - Yifeng Cheng
- Advanced Materials Laboratory & Department of Chemistry, Fudan University , Shanghai 200433, People's Republic of China
| | - Jie Zhang
- Advanced Materials Laboratory & Department of Chemistry, Fudan University , Shanghai 200433, People's Republic of China
| | - Renchao Che
- Advanced Materials Laboratory & Department of Chemistry, Fudan University , Shanghai 200433, People's Republic of China
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30
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Hsieh MS, Su HJ, Hsieh PL, Chiang YW, Huang MH. Synthesis of Ag 3PO 4 Crystals with Tunable Shapes for Facet-Dependent Optical Property, Photocatalytic Activity, and Electrical Conductivity Examinations. ACS APPLIED MATERIALS & INTERFACES 2017; 9:39086-39093. [PMID: 29043767 DOI: 10.1021/acsami.7b13941] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
This work has developed conditions for the synthesis of Ag3PO4 cubes, rhombic dodecahedra, {100}-truncated rhombic dodecahedra, tetrahedra, and tetrapods by tuning the amount of NH4NO3, NaOH, AgNO3, and K2HPO4 solutions added. Use of a minimal amount of AgNO3 solution can form much smaller rhombic dodecahedra and tetrahedra. Submicrometer-sized Ag3PO4 cubes and rhombic dodecahedra with sizes larger than 300 nm do not exhibit the optical size effect, but ∼290 nm rhombic dodecahedra show a smaller band gap value than larger cubes, and tetrahedra show the most blue-shifted absorption edge. The optical facet effect is present in Ag3PO4 crystals. Ag3PO4 cubes are more photocatalytically active than rhombic dodecahedra toward photodegradation of methyl orange, but tetrahedra are inactive, showing clear presence of photocatalytic facet effects. Electron paramagnetic resonance results confirm much higher production of hydroxyl radicals from photoirradiated Ag3PO4 cubes than from rhombic dodecahedra, while tetrahedra yield essentially no radicals. A modified band diagram showing different degrees of band edge bending can explain these observations. All these Ag3PO4 crystals show poor electrical conductivity properties, but the {110} faces are slightly more conductive than the {100} faces. As a result, current rectifying I-V curves have been obtained, demonstrating that facet-dependent electrical properties are broadly observable in many semiconductor materials. This work reveals again that facet-dependent optical, photocatalytic, and electrical conductivity properties are intrinsic semiconductor properties.
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Affiliation(s)
- Meng-Shan Hsieh
- Department of Chemistry, ‡Interdisciplinary Program of Sciences, and §Department of Materials Science and Engineering, National Tsing Hua University , Hsinchu 30013, Taiwan
| | - Huang-Jen Su
- Department of Chemistry, ‡Interdisciplinary Program of Sciences, and §Department of Materials Science and Engineering, National Tsing Hua University , Hsinchu 30013, Taiwan
| | - Pei-Lun Hsieh
- Department of Chemistry, ‡Interdisciplinary Program of Sciences, and §Department of Materials Science and Engineering, National Tsing Hua University , Hsinchu 30013, Taiwan
| | - Yun-Wei Chiang
- Department of Chemistry, ‡Interdisciplinary Program of Sciences, and §Department of Materials Science and Engineering, National Tsing Hua University , Hsinchu 30013, Taiwan
| | - Michael H Huang
- Department of Chemistry, ‡Interdisciplinary Program of Sciences, and §Department of Materials Science and Engineering, National Tsing Hua University , Hsinchu 30013, Taiwan
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31
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Liu Z, Liu Y, Xu P, Ma Z, Wang J, Yuan H. Rational Design of Wide Spectral-Responsive Heterostructures of Au Nanorod Coupled Ag 3PO 4 with Enhanced Photocatalytic Performance. ACS APPLIED MATERIALS & INTERFACES 2017; 9:20620-20629. [PMID: 28570074 DOI: 10.1021/acsami.7b06824] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Noble metallic nanomaterials with surface plasmon resonance (SPR) effects and hot electron cell effects open new opportunities for designing efficient visible-light-driven hybrid photocatalysts. In this work, we reported a broadband visible-light responsive photocatalyst by incorporating Au nanorods (AuNRs) into Ag3PO4 nanostructures. The longitudinal plasma of AuNRs enabled AuNRs/Ag3PO4 heterostructures to harvest light energy up to 800 nm. The obtained AuNRs/Ag3PO4 hybrid exhibited enhanced photocatalytic efficiency toward the degradation of rhodamine B (RhB) under solar irradiation. Ag3PO4, RhB, and AuNRs played different roles according to the distinct optical properties of each individual component. The dominant photocatalytic process in the different light regions were divided as follows: direct excitation of Ag3PO4 for λ ≥ 420 nm, RhB sensitization for λ ≥ 550 nm, and SPR effect for λ ≥ 600 nm. The relationship between the pathway of charge transfer and the photocatalytic activity of the AuNRs/Ag3PO4 heterostructures was investigated systematically, revealing the specific role of AuNRs in regulating the photocatalytic activity. This work presents an innovative strategy for determining the comprehensive function of the SPR effect in relevant semiconductor-based photocatalysis and functional nanodevices with a broadband light responses.
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Affiliation(s)
- Zening Liu
- College of Science, Huazhong Agricultural University , Wuhan 430070, Hubei, PR China
| | - Yongcheng Liu
- College of Science, Huazhong Agricultural University , Wuhan 430070, Hubei, PR China
| | - Piaopiao Xu
- College of Science, Huazhong Agricultural University , Wuhan 430070, Hubei, PR China
| | - Zhonghua Ma
- College of Science, Huazhong Agricultural University , Wuhan 430070, Hubei, PR China
| | - Jingyu Wang
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan 430074, Hubei, PR China
| | - Hong Yuan
- College of Science, Huazhong Agricultural University , Wuhan 430070, Hubei, PR China
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University , Wuhan, 430079 Hubei, PR China
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32
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Novel visible light response Ag 3 PO 4 /TiP 2 O 7 composite photocatalyst with low Ag consumption. ADV POWDER TECHNOL 2017. [DOI: 10.1016/j.apt.2017.01.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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33
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Effect of gadollunium doping on visible light photocatalytic performance of Ag3PO4: Evaluation of activity in degradation of an anthraquinone dye and mechanism study. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.molcata.2016.11.026] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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34
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Liu Y, Wu Q, Zhao Y. Biomimetic synthesis of Ag3PO4-NPs/Cu-NWs with visible-light-enhanced photocatalytic activity for degradation of the antibiotic ciprofloxacin. Dalton Trans 2017; 46:6425-6432. [DOI: 10.1039/c6dt04656h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cu-NWs/Ag3PO4-NPs can be used as photocatalysts under visible light irradiation and have high photocatalytic performance for degradation of CPFX.
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Affiliation(s)
- Yuling Liu
- School of Chemical Science and Engineering
- TongJi University
- Shanghai 200092
- China
- Department of Chemistry Chemical Engineering
| | - Qingsheng Wu
- School of Chemical Science and Engineering
- TongJi University
- Shanghai 200092
- China
| | - Yaping Zhao
- School of Ecological and Environmental Science
- East China Normal University
- Shanghai 200241
- China
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35
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36
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Gunjakar JL, Jo YK, Kim IY, Lee JM, Patil SB, Pyun JC, Hwang SJ. A chemical bath deposition route to facet-controlled Ag3PO4 thin films with improved visible light photocatalytic activity. J SOLID STATE CHEM 2016. [DOI: 10.1016/j.jssc.2016.05.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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37
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Yan Q, Xu M, Lin C, Hu J, Liu Y, Zhang R. Efficient photocatalytic degradation of tetracycline hydrochloride by Ag3PO4 under visible-light irradiation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:14422-14430. [PMID: 27068899 DOI: 10.1007/s11356-016-6588-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 03/28/2016] [Indexed: 06/05/2023]
Abstract
A facile, environmental-friendly Ag3PO4-PN photocatalyst was synthesized by a simple precipitation method at room temperature in the presence of ammonia and polyvinyl pyrrolidone (PVP). As-synthesized samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV-visible diffuse reflectance spectroscopy (UV-vis DRS). The enhancement of photocatalytic efficiency of Ag3PO4-PN is strongly dependent on the excellent photo-absorption capacity, sharp edges and corners, and synergistic effect of PVP and NH3·H2O. The effects of catalyst dosage, TC concentration and solution pH were explored with tetracycline hydrochloride (TC) as target contamination. The mineralization was evaluated by total organic carbon (TOC) analysis and determination of the concentration of inorganic ions such as NO3 (-) and Cl(-). Radical detection experiment indicated the h(+) and ·O(2-) are major active species in the degradation of TC by Ag3PO4-PN. Moreover, photocatalyst stability and regeneration experiments exhibited the favorable stability and rejuvenation ability, suggesting a promising prospect of practical application of Ag3PO4 in the wastewater treatment.
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Affiliation(s)
- QiShe Yan
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China.
| | - MengMeng Xu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - CuiPing Lin
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - JiFei Hu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - YongGang Liu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - RuiQin Zhang
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, China
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38
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Novel synthesis of Ag3PO4/CNFs/silica-fiber hybrid composite as an efficient photocatalyst. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2016.03.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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39
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Photocatalytic degradation of dyes by AgBr/Ag3PO4 and the ecotoxicities of their degraded products. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(15)61078-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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40
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Martin DJ, Liu G, Moniz SJA, Bi Y, Beale AM, Ye J, Tang J. Efficient visible driven photocatalyst, silver phosphate: performance, understanding and perspective. Chem Soc Rev 2016. [PMID: 26204436 DOI: 10.1039/c5cs00380f] [Citation(s) in RCA: 188] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Photocatalysis is a promising technology that can contribute to renewable energy production from water and water purification. In order to further develop the field and meet industrial requirements, it is imperative to focus on advancing high efficiency visible light photocatalysts, such as silver phosphate (Ag3PO4). This review aims to highlight the recent progress made in the field, focusing on oxygen production from water, and organic contaminant decomposition using Ag3PO4. The most important advances are discussed and explained in detail, including semiconductor-semiconductor junctions, metal-semiconductor junctions, exposing facet control, and fundamental understanding using advanced spectroscopies and computational chemistry. The review then concludes by critically summarising both findings and current perspectives, and ultimately how the field might best advance in the near future.
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Affiliation(s)
- David James Martin
- Department of Chemical Engineering, University College London, Torrington Place, London WC1E 7JE, UK. and Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Guigao Liu
- Environmental Remediation Materials Unit and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, Japan. and Graduate School of Chemical Science and Engineering, Hokkaido University, Sapporo, Japan
| | - Savio J A Moniz
- Department of Chemical Engineering, University College London, Torrington Place, London WC1E 7JE, UK.
| | - Yingpu Bi
- State Key Laboratory for Oxo Synthesis & Selective Oxidation, National Engineering Research Center for Fine Petrochemical Intermediates, Lanzhou Institute of Chemical Physics, CAS, Lanzhou 730000, China
| | - Andrew M Beale
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK and Research Complex at Harwell, Harwell, Didcot, Oxfordshire OX11 0FA, UK
| | - Jinhua Ye
- Environmental Remediation Materials Unit and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, Japan. and Graduate School of Chemical Science and Engineering, Hokkaido University, Sapporo, Japan
| | - Junwang Tang
- Department of Chemical Engineering, University College London, Torrington Place, London WC1E 7JE, UK.
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41
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Yang J, Hu R, Meng W, Du Y. A novel p-LaFeO3/n-Ag3PO4 heterojunction photocatalyst for phenol degradation under visible light irradiation. Chem Commun (Camb) 2016; 52:2620-3. [PMID: 26753187 DOI: 10.1039/c5cc09222a] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A novel heterojunction photocatalyst p-LaFeO3/n-Ag3PO4 has been prepared via a facile in situ precipitation method. It exhibits higher activity than individual Ag3PO4 and LaFeO3 in the degradation of phenol. The excellent activity is mainly attributed to its more effective separation of electron-hole pairs.
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Affiliation(s)
- Jun Yang
- Key Laboratory of Chemistry and Physics of Rare Earth Materials, College of Chemistry and Chemical Engineering, Inner Mongolia University, Inner Mongolia 010021, Hohhot, P. R. China.
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42
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Samal A, Das DP, Nanda KK, Mishra BK, Das J, Dash A. Reduced Graphene Oxide-Ag3
PO4
Heterostructure: A Direct Z-Scheme Photocatalyst for Augmented Photoreactivity and Stability. Chem Asian J 2016; 11:584-95. [DOI: 10.1002/asia.201501286] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Indexed: 12/13/2022]
Affiliation(s)
- Alaka Samal
- Academy of Scientific and Innovative Research; New Delhi India
- Colloids and Materials Chemistry Department; CSIR-Institute of Minerals and Materials Technology; Bhubaneswar- 751 013 Odisha India
| | - D. P. Das
- Academy of Scientific and Innovative Research; New Delhi India
- Colloids and Materials Chemistry Department; CSIR-Institute of Minerals and Materials Technology; Bhubaneswar- 751 013 Odisha India
| | - K. K. Nanda
- Academy of Scientific and Innovative Research; New Delhi India
- Colloids and Materials Chemistry Department; CSIR-Institute of Minerals and Materials Technology; Bhubaneswar- 751 013 Odisha India
| | - B. K. Mishra
- Academy of Scientific and Innovative Research; New Delhi India
| | - J. Das
- Central Characterization Cell; CSIR-Institute of Minerals and Materials Technology; Bhubaneswar- 751 013 Odisha India
| | - A. Dash
- Central Characterization Cell; CSIR-Institute of Minerals and Materials Technology; Bhubaneswar- 751 013 Odisha India
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43
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Xue J, Zan G, Wu Q, Deng B, Zhang Y, Huang H, Zhang X. Integrated nanotechnology for synergism and degradation of fungicide SOPP using micro/nano-Ag3PO4. Inorg Chem Front 2016. [DOI: 10.1039/c5qi00186b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The integrated nanotechnology utilizes micro/nano-Ag3PO4 to enhance the antifungal activity of fungicide SOPP and to successively remove the SOPP residue.
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Affiliation(s)
- Jingzhe Xue
- Department of Chemistry
- Key Laboratory of Yangtze River Water Environment
- Ministry of Education
- Tongji University
- Shanghai 200092
| | - Guangtao Zan
- Department of Chemistry
- Key Laboratory of Yangtze River Water Environment
- Ministry of Education
- Tongji University
- Shanghai 200092
| | - Qingsheng Wu
- Department of Chemistry
- Key Laboratory of Yangtze River Water Environment
- Ministry of Education
- Tongji University
- Shanghai 200092
| | - Baolin Deng
- Department of Civil & Environmental Engineering
- University of Missouri
- Columbia
- USA
| | - Yahui Zhang
- Department of Chemistry
- Key Laboratory of Yangtze River Water Environment
- Ministry of Education
- Tongji University
- Shanghai 200092
| | - Hongqin Huang
- Department of Chemistry
- Key Laboratory of Yangtze River Water Environment
- Ministry of Education
- Tongji University
- Shanghai 200092
| | - Xiaochen Zhang
- Department of Chemistry
- Key Laboratory of Yangtze River Water Environment
- Ministry of Education
- Tongji University
- Shanghai 200092
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44
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Zhou L, Alvarez OG, Mazon CS, Chen L, Deng H, Sui M. The roles of conjugations of graphene and Ag in Ag3PO4-based photocatalysts for degradation of sulfamethoxazole. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00192k] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three different photocatalysts, namely silver phosphate (Ag3PO4; AGP), Ag3PO4-graphene (AGP–G) and Ag/Ag3PO4–graphene (AAGP–G), were fabricated by a chemical precipitation approach. The mechanism of AAGP–G to degrade SMX was explained in detail.
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Affiliation(s)
- Li Zhou
- College of Environmental State Key Laboratory of Pollution Control and Resource Reuse
- Tongji University
- Shanghai
- China
- Key Laboratory of Yangtze River Water Environment
| | | | | | - Ling Chen
- Key Laboratory of Yangtze River Water Environment
- Ministry of Education
- Shanghai
- China
| | - Huiping Deng
- Key Laboratory of Yangtze River Water Environment
- Ministry of Education
- Shanghai
- China
| | - Minghao Sui
- Key Laboratory of Yangtze River Water Environment
- Ministry of Education
- Shanghai
- China
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45
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Dong C, Wang J, Wu KL, Ling M, Xia SH, Hu Y, Li X, Ye Y, Wei XW. Rhombic dodecahedral Ag3PO4architectures: controllable synthesis, formation mechanism and photocatalytic activity. CrystEngComm 2016. [DOI: 10.1039/c6ce00010j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Botelho G, Andres J, Gracia L, Matos LS, Longo E. Photoluminescence and Photocatalytic Properties of Ag 3 PO 4 Microcrystals: An Experimental and Theoretical Investigation. Chempluschem 2015; 81:202-212. [PMID: 31968763 DOI: 10.1002/cplu.201500485] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Indexed: 11/09/2022]
Abstract
The structural, morphological, and optical properties of Ag3 PO4 microcrystals were systematically characterized by using a combination of theoretical calculations and experimental techniques. These microcrystals were synthesized by the microwave-assisted hydrothermal (MAH) method. XRD, Rietveld refinements, and FTIR spectroscopy were employed to carry out a structural analysis; the morphologies of the microcrystals were examined by FEG-SEM. First-principles computational studies were used to calculate the geometries of bulk Ag3 PO4 and its (010), (100), (001), (110), (101), (011), and (111) surfaces. A continuous decrease in the energy of the (100) surface led to a good agreement between the experimental and theoretical morphologies. Optical properties were investigated by UV/Vis spectroscopy and photoluminescence (PL) measurements, which revealed a maximum PL emission at λ=444 nm. The MAH-synthesized sample exhibited good activity for the photocatalytic degradation of methyl orange dye under visible irradiation. The photocatalytic activity and PL behavior were correlated with the observed morphology.
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Affiliation(s)
- Gleice Botelho
- INCTMN-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, 13565-905, São Carlos, SP, Brazil
| | - Juan Andres
- Departament de Química Física i Analítica, Universitat Jaume I, 12071, Castelló de la Plana, Spain
| | - Lourdes Gracia
- Departament de Química Física i Analítica, Universitat Jaume I, 12071, Castelló de la Plana, Spain
| | - Leandro S Matos
- INCTMN-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, 13565-905, São Carlos, SP, Brazil
| | - Elson Longo
- INCTMN-UNESP, Universidade Estadual Paulista, P.O. Box 355, CEP., 14801-907, Araraquara, SP, Brazil
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47
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Hua X, Teng F, Zhao Y, Xu J, Xu C, Yang Y, Zhang Q, Paul S, Zhang Y, Chen M, Zhao X. A new application of high-efficient silver salts-based photocatalyst under natural indoor weak light for wastewater cleaning. WATER RESEARCH 2015; 81:366-374. [PMID: 26107659 DOI: 10.1016/j.watres.2015.06.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 06/08/2015] [Accepted: 06/11/2015] [Indexed: 06/04/2023]
Abstract
As a high-quantum-efficiency photocatalyst, the serious photo-corrosion of silver phosphate (Ag3PO4), limits the practical applications in water purification and challenges us. Herein, Ag3PO4 is found to have a high stability under natural indoor weak light irradiation, suggesting that we can employ it by adopting a new application strategy. In our studies, rhodamine B (RhB, cationic dye), methyl orange (MO, anionic dye) and RhB-MO mixture aqueous solutions are used as the probing reaction for the degradation of organic wastewater. It is found that RhB, MO and RhB-MO can be completely degraded after 28 h under natural indoor weak light irradiation, indicating that multi-component organic contaminants can be efficiently degraded by Ag3PO4 under natural indoor weak light irradiation. The density of natural indoor weak light is measured to be 72cd, which is merely one-thousandth of 300 W xenon lamp (68.2 × 10(3)cd). Most importantly, Ag3PO4 shows a high stability under natural indoor weak light irradiation, demonstrated by the formation of fairly rare Ag. Furthermore, we also investigate the influence of inorganic ions on organic dyes degradation. It shows that the Cl(-) and Cr(6+) ions with high concentrations in wastewater have significantly decreased the degradation rate. From the viewpoint of energy saving and stability, this study shows us that we can utilize the Ag-containing photocatalysts under natural indoor weak light, which could be extended to indoor air cleaning process.
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Affiliation(s)
- Xia Hua
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China; Emerging Technologies Research Centre, De Montfort University, The Gateway, Leicester LE1 9BH, United Kingdom; School of Engineering, University of Hull, Cottingham Road, Hull HU6 7RX, United Kingdom
| | - Fei Teng
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China.
| | - Yunxuan Zhao
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China
| | - Juan Xu
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China
| | - Chuangye Xu
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China
| | - Yang Yang
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China
| | - Qiqi Zhang
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China
| | - Shashi Paul
- Emerging Technologies Research Centre, De Montfort University, The Gateway, Leicester LE1 9BH, United Kingdom
| | - Yi Zhang
- Emerging Technologies Research Centre, De Montfort University, The Gateway, Leicester LE1 9BH, United Kingdom
| | - Mindong Chen
- Jiangsu Engineering and Technology Research Center of Environmental Cleaning Materials (ECM), Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC), Jiangsu Joint Laboratory of Atmospheric Pollution Control (APC), Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (AEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing 210044, China
| | - Xudong Zhao
- School of Engineering, University of Hull, Cottingham Road, Hull HU6 7RX, United Kingdom
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48
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Teng F, Liu Z, Zhang A, Li M. Photocatalytic Performances of Ag3PO4 Polypods for Degradation of Dye Pollutant under Natural Indoor Weak Light Irradiation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:9489-9494. [PMID: 25807447 DOI: 10.1021/acs.est.5b00735] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
It is still a big challenge for Ag3PO4 to be applied in practice mainly because of its low stability resistant to photo corrosion, although it is an efficient photocatalyst. Herein, we have mainly investigated its activity and stability under indoor weak light for the degradation of dye pollutants. It is amazing that under indoor weak light irradiation, rhodamine B (RhB) can be completely degraded by Ag3PO4 polypods after 36 h, but only 18% of RhB by N-doped TiO2 after 120 h. It is found that under indoor weak light irradiation, the degradation rate (0.08099 h(-1)) of RhB over Ag3PO4 polypods are 46 times higher than that (0.00173 h(-1)) of N-doped TiO2. The high activity of Ag3PO4 polypods are mainly attributed to the three-dimensional branched nanostructure and high-energy {110} facets exposed. After three cycles, surprisingly, Ag3PO4 polypods show a high stability under indoor weak light irradiation, whereas Ag3PO4 have been decomposed into Ag under visible light irradiation with an artificial Xe light source. This natural weak light irradiation strategy could be a promising method for the other unstable photocatalysts in the degradation of environmental pollutants.
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49
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Zhang S, Zhang S, Song L. Co(II)-grafted Ag3PO4 photocatalysts with unexpected photocatalytic ability: Enhanced photogenerated charge separation efficiency, photocatalytic mechanism and activity. JOURNAL OF HAZARDOUS MATERIALS 2015; 293:72-80. [PMID: 25827270 DOI: 10.1016/j.jhazmat.2015.03.047] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 03/20/2015] [Accepted: 03/22/2015] [Indexed: 06/04/2023]
Abstract
Since the photocatalytic capability is determined by the separation and transmission efficiency of photoinduced charges, its improvement remains a challenge for development of efficient photocatalysts. Here, we made large improvement on the surface of Ag3PO4 using Co(II)-grafted Ag3PO4 by a hydrothermal method. During the photocatalytic process, Co(II) was oxidized to Co(III) by the photogenerated holes under visible light radiation, which enhanced the separation efficiency of photogenerated charges. Meanwhile, the Co(III) as-formed could oxidize dye molecules, which recovered the Co(II). The synergy of Co(II) and Ag3PO4 greatly promoted the separation and transmission efficiency of the photogenerated charges, and severely improved the photocatalytic activity of Ag3PO4. The surface grafted Co(II) on Ag3PO4 is responsible for the enhancement of photocatalytic activity.
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Affiliation(s)
- Shuna Zhang
- College of Textile Engineering, Zhejiang Industry Polytechnic College, Shaoxing 312000, PR China
| | - Shujuan Zhang
- College of Science, Tianjin University of Science & Technology, Tianjin 300457, PR China.
| | - Limin Song
- College of Environment and Chemical Engineering & State Key Laboratory of Hollow-Fiber Membrane Materials and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, PR China.
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50
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Jiang W, Zeng Y, Wang X, Yue X, Yuan S, Lu H, Liang B. Preparation of Silver Carbonate and its Application as Visible Light-driven Photocatalyst Without Sacrificial Reagent. Photochem Photobiol 2015; 91:1315-23. [DOI: 10.1111/php.12495] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 06/27/2015] [Indexed: 01/17/2023]
Affiliation(s)
- Wei Jiang
- Multi-phase Mass Transfer and Reaction Engineering Laboratory; College of Chemical Engineering; Sichuan University; Chengdu China
| | - Ya Zeng
- Multi-phase Mass Transfer and Reaction Engineering Laboratory; College of Chemical Engineering; Sichuan University; Chengdu China
| | - Xiaoyan Wang
- Multi-phase Mass Transfer and Reaction Engineering Laboratory; College of Chemical Engineering; Sichuan University; Chengdu China
| | - Xiaoning Yue
- Multi-phase Mass Transfer and Reaction Engineering Laboratory; College of Chemical Engineering; Sichuan University; Chengdu China
| | - Shaojun Yuan
- Multi-phase Mass Transfer and Reaction Engineering Laboratory; College of Chemical Engineering; Sichuan University; Chengdu China
| | - Houfang Lu
- Multi-phase Mass Transfer and Reaction Engineering Laboratory; College of Chemical Engineering; Sichuan University; Chengdu China
| | - Bin Liang
- Multi-phase Mass Transfer and Reaction Engineering Laboratory; College of Chemical Engineering; Sichuan University; Chengdu China
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