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Singh N, Kumar U, Jatav N, Sinha I. Photocatalytic Degradation of Crystal Violet on Cu, Zn Doped BiVO 4 Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:8450-8462. [PMID: 38596886 DOI: 10.1021/acs.langmuir.3c04039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
Fabrication of codoped photocatalysts is a developing area of research. Herein, we explore the visible light photocatalytic properties of Cu, Zn codoped BiVO4 particles. Doping lower valent cations (Cu and Zn) makes the BiVO4 surface more acidic and enables us to target the basic crystal violet (CV) dye. The adopted hydrothermal protocol of synthesis results in the formation of Cu-Zn codoped monoclinic BiVO4 particles. Undoped monoclinic BiVO4, prepared by the same protocol, showed significant formation of oxygen vacancies. XPS analyses confirm the coexistence of Cu2+/Cu+ and Zn2+ dopants. Increased dopant percentage reduced oxygen vacancies. XRD indicates that Cu2+/Cu+ or Zn2+ dopants generally substitute Bi3+ in BiVO4. All photocatalysis activities for CV degradation are reported under near-neutral pH conditions. A typical codoped BiVO4 photocatalyst with 1% Zn and 2% Cu demonstrated the best CV degradation photocatalytic activity. The activity of this Zn, Cu codoped photocatalyst is better than that of pure, Zn-doped, and Cu-doped BiVO4 samples. Active species trapping experiments indicated the possible photocatalysis mechanism. The photocatalysts exhibited appropriate recyclability and photostability.
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Affiliation(s)
- Nivedita Singh
- Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Uttam Kumar
- Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Neha Jatav
- Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Indrajit Sinha
- Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
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Viswanathan S, Biju J, Kallingal A. Graphitic carbon nitride-adorned PDMS self-cleaning floating photocatalyst for simultaneous removal of Rhodamine B, Crystal Violet and Malachite Green from a ternary dye mixture. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:117325-117339. [PMID: 37864691 DOI: 10.1007/s11356-023-30329-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 10/04/2023] [Indexed: 10/23/2023]
Abstract
Graphitic carbon nitride-adorned polydimethylsiloxane (PDMS) floating catalyst was prepared by a simple procedure. The prepared catalyst was utilized for the simultaneous mitigation of recalcitrant organic pollutants such as Rhodamine B, Crystal Violet and Malachite Green from their ternary mixture for the first time. Derivative spectroscopic method was used to calculate the degradation efficiencies of individual dyes in the mixture. The prepared catalyst showed a consistent degradation performance up to 4 cycles inducing a degradation of 94.02%, 92.1% and 97.13% of Rhodamine B, Crystal Violet and Malachite Green, respectively, in a dye(s) solution with a catalytic loading of 0.5 g L-1. A kinetic analysis of the dye(s) degradation under visible light was carried out during the course of this work up to 120 min. A detailed characterization of the surface of this novel catalyst was carried out in this study by SEM, EDX, XRD, DRS, DTG, FTIR, Raman spectroscopy and UV-Vis spectroscopy and provided the experimental proof for the catalyst presenting high hydrophobicity, self-cleaning ability, good recyclability and high chemical stability.
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Affiliation(s)
- Shalini Viswanathan
- Materials Science and Environmental Sustainability Group, Department of Chemical Engineering, National Institute of Technology, Calicut, India, 673601
| | - Joel Biju
- Materials Science and Environmental Sustainability Group, Department of Chemical Engineering, National Institute of Technology, Calicut, India, 673601
| | - Aparna Kallingal
- Materials Science and Environmental Sustainability Group, Department of Chemical Engineering, National Institute of Technology, Calicut, India, 673601.
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Bhat AH, Chopan NA, Chisti HTN. Enhanced photocatalytic degradation of crystal violet dye and high-performance electrochemical supercapacitor applications of hydrothermally synthesised magnetic bifunctional nanocomposite (Fe 3O 4/ZnO). NANOTECHNOLOGY 2023; 34:495604. [PMID: 37669630 DOI: 10.1088/1361-6528/acf6c4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 09/05/2023] [Indexed: 09/07/2023]
Abstract
The present investigation employed a facile hydrothermal approach for the fabrication of Fe3O4/ZnO dual-functional magnetic nanocomposite. Supercapacitor and visible-light-driven photocatalytic applications of the material were explored. X-ray diffraction, Fourier transform infrared spectra, ultraviolet-visible diffuse reflectance spectra (UV-vis/DRS), field emission scanning electron microscopy (FE-SEM), energy dispersive x-ray spectroscopy, and vibrating sample magnetometer were used to analyse the nanocomposite's structural, morphological, optical, and magnetic properties. The FE-SEM analysis demonstrated that the surface morphology of Fe3O4, ZnO, and the Fe3O4/ZnO nanocomposite consisted of nanoparticles, nanoflakes, and nanoparticles adhered to the nanoflakes, respectively. The maximum specific capacitance of the electrode based on the Fe3O4/ZnO nanocomposite was measured to be 736.36 Fg-1at a scan rate of 5 mVs-1. The electrode also demonstrated remarkable cycling stability, retaining 86.5% of its capacitance even after 3000 cycles. The Fe3O4/ZnO nanocomposite was found to have an optical bandgap of 2.7 eV, an average particle size of 22.5 nm, and a saturation magnetization of 68.7 emu g-1. The photocatalysis experiment was conducted using the optimised settings, which included a pH of 7.0, a dye concentration of 30 mg l-1, a catalyst dose of 1 g l-1, and a contact time of 120 min. The Fe3O4/ZnO nanocomposite exhibited a notable degradation efficiency towards crystal violet dye upon exposure to visible light, achieving a degradation efficiency of 96.9%. This performance surpassed that of pure ZnO, which attained a degradation efficiency of 70.2%. The nanocomposite exhibited a rate constant of 2.80 × 10-2min-1, which was found to be notably higher than that of pure ZnO (0.8 × 10-2min-1), as determined through modelling (pseudo-first order linear fit). The radical scavenger experiments indicated that the superoxide radicals and hydroxyl radicals are the primary reactive species. The Fe3O4/ZnO photocatalyst can be effectively isolated using a bar magnet. Remarkably, the photocatalytic efficiency of the material remained almost entirely intact even after undergoing four cycles of recycling. In addition, this research opens up exciting new possibilities for use in fields like energy storage and pollution control.
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Affiliation(s)
- Aabid Hussain Bhat
- Department of Chemistry, National Institute of Technology Srinagar, J&K, (190006), India
| | - Nisar Ahmad Chopan
- Department of Chemistry, National Institute of Technology Srinagar, J&K, (190006), India
| | - Hamida-Tun-Nisa Chisti
- Department of Chemistry, National Institute of Technology Srinagar, J&K, (190006), India
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Preetha R, Govinda Raj M, Vijayakumar E, Narendran MG, Neppolian B, Bosco AJ. "Quasi-In Situ Synthesis of Oxygen Vacancy-Enriched Strontium Iron Oxide Supported on Boron-Doped Reduced Graphene Oxide to Elevate the Photocatalytic Destruction of Tetracycline". LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:7091-7108. [PMID: 37163322 DOI: 10.1021/acs.langmuir.3c00340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The efficient use of visible light is necessary to take advantage of photocatalytic processes in both indoor and outdoor circumstances. Precisely manipulating the in situ growth method of heterojunctions is an effective way to promote photogenerated charge separation. Herein, the SrFeO3@B-rGO catalyst was prepared by an in situ growth method. At a loading of 10 wt % B-rGO, the nanocomposites revealed an excellent morphology and thermal, optical, electrochemical, and mechanical properties. X-ray diffraction analysis revealed the cubic spinel structure and a space group of Pm̅3m for SrFeO3. High-resolution scanning electron microscopy and high-resolution transmission electron microscopy show the core-shell formation between SrFeO3 and B-rGO. Furthermore, density functional theory of SrFeO3 was performed to find its band structure and density of states. The SrFeO3@B-rGO nanocomposite shows the degradation rate of tetracycline (TC) reaching 92% in 75 min and the highest rate constant of 0.0211 min-1. To improve the catalytic removal rate of antibiotics, the efficiency of e- and h + separation must be improved, as well as the generation of additional radicals. Radical trapping tests and the electron paramagnetic resonance method indicated that the combination of Fe2+ and Fe3+ in SrFeO3 effectively separated e- and h+ while also promoting the development of the superoxide anion (•O2-) to accelerate TC degradation. The entire TC degradation pathway using high-performance liquid chromatography and its mechanism were discussed. As a whole, this study delineates that photocatalysis is a viable strategy for the treatment of environmental antibiotic wastewater.
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Affiliation(s)
- Rajaraman Preetha
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603 203 Tamil Nadu, India
| | - Muniyandi Govinda Raj
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603 203 Tamil Nadu, India
| | - Elayaperumal Vijayakumar
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603 203 Tamil Nadu, India
| | | | - Bernaurdshaw Neppolian
- Energy and Environmental Remediation Lab, SRM Research Institute, SRM Institute of Science and Technology, Kattankulathur 603 203 Tamil Nadu, India
| | - Aruljothy John Bosco
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603 203 Tamil Nadu, India
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Photocatalytic CO2 Reduction to CH4 and Dye Degradation Using Bismuth Oxychloride/Bismuth Oxyiodide/Graphitic Carbon Nitride (BiOmCln/BiOpIq/g-C3N4) Nanocomposite with Enhanced Visible-Light Photocatalytic Activity. Catalysts 2023. [DOI: 10.3390/catal13030522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023] Open
Abstract
The use of visible-light-driven photocatalysts in wastewater treatment, photoreduction of CO2, green solar fuels, and solar cells has elicited substantial research attention. Bismuth oxyhalide and its derivatives are a group of visible-light photocatalysts that can diminish electron–hole recombination in layered structures and boost photocatalytic activity. The energy bandgap of these photocatalysts lies in the range of visible light. A simple hydrothermal method was applied to fabricate a series of bismuth oxychloride/bismuth oxyiodide/grafted graphitic carbon nitride (BiOmCln/BiOpIq/g-C3N4) sheets with different contents of g-C3N4. The fabricated sheets were characterized through XRD, TEM, SEM-EDS, XPS, UV-vis DRS, PL, and BET. The conversion efficiency of CO2 reduction to CH4 of BiOmCln/BiOpIq of 4.09 μmol g−1 can be increased to 39.43 μmol g−1 by compositing with g-C3N4. It had an approximately 9.64 times improvement. The photodegradation rate constant for crystal violet (CV) dye of BiOmCln/BiOpIq of k = 0.0684 can be increased to 0.2456 by compositing with g-C3N4. It had an approximately 3.6 times improvement. The electron paramagnetic resonance results and the quenching effects indicated that 1O2, •OH, h+, and •O2− were active species in the aforementioned photocatalytic degradation. Because of their heterojunction, the prepared ternary nanocomposites possessed the characteristics of a heterojunction of type II band alignment.
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Ivan R, Popescu C, Antohe VA, Antohe S, Negrila C, Logofatu C, del Pino AP, György E. Iron oxide/hydroxide-nitrogen doped graphene-like visible-light active photocatalytic layers for antibiotics removal from wastewater. Sci Rep 2023; 13:2740. [PMID: 36792714 PMCID: PMC9932170 DOI: 10.1038/s41598-023-29927-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 02/13/2023] [Indexed: 02/17/2023] Open
Abstract
Hybrid layers consisting of Fe oxide, Fe hydroxide, and nitrogen doped graphene-like platelets have been synthesized by an eco-friendly laser-based method for photocatalytic applications. The complex composite layers show high photodecomposition efficiency towards degradation of antibiotic molecules under visible light irradiation. The photodecomposition efficiency was investigated as a function of relative concentrations of base materials, Fe oxide nanoparticles and graphene oxide platelets used for the preparation of target dispersions submitted to laser irradiation. Although reference pure Fe oxide/Fe hydroxide layers have high absorption in the visible spectral region, their photodecomposition efficiency is negligible under the same irradiation conditions. The high photocatalytic decomposition efficiency of the nanohybrid layer, up to 80% of the initial antibiotic molecules was assigned to synergistic effects between the constituent materials, efficient separation of the electron-hole pairs generated by visible light irradiation on the surface of Fe oxide and Fe hydroxide nanoparticles, in the presence of conducting graphene-like platelets. Nitrogen doped graphene-like platelets contribute also to the generation of electron-hole pairs under visible light irradiation, as demonstrated by the photocatalytic activity of pure, reference nitrogen doped graphene-like layers. The results also showed that adsorption processes do not contribute significantly to the removal of antibiotic molecules from the test solutions. The decrease of the antibiotic concentration under visible light irradiation was assigned primarily to photocatalytic decomposition mechanisms.
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Affiliation(s)
- R. Ivan
- grid.435167.20000 0004 0475 5806National Institute for Lasers, Plasma and Radiation Physics, PO Box MG 36, 077125 Măgurele, Ilfov Romania ,grid.5100.40000 0001 2322 497XFaculty of Physics, University of Bucharest, Atomiștilor 405, 077125 Măgurele, Ilfov Romania
| | - C. Popescu
- grid.435167.20000 0004 0475 5806National Institute for Lasers, Plasma and Radiation Physics, PO Box MG 36, 077125 Măgurele, Ilfov Romania
| | - V. A. Antohe
- grid.5100.40000 0001 2322 497XFaculty of Physics, University of Bucharest, Atomiștilor 405, 077125 Măgurele, Ilfov Romania ,grid.7942.80000 0001 2294 713XInstitute of Condensed Matter and Nanosciences (IMCN), Université Catholique de Louvain (UCLouvain), Place Croix du Sud 1, 1348 Louvain-La-Neuve, Belgium
| | - S. Antohe
- grid.5100.40000 0001 2322 497XFaculty of Physics, University of Bucharest, Atomiștilor 405, 077125 Măgurele, Ilfov Romania ,grid.435118.a0000 0004 6041 6841Academy of Romanian Scientists (AOSR), Splaiul Independenței 54, 050094 Bucharest, Romania
| | - C. Negrila
- grid.443870.c0000 0004 0542 4064National Institute for Materials Physics, PO Box MG 7, 077125 Măgurele, Ilfov, Romania
| | - C. Logofatu
- grid.443870.c0000 0004 0542 4064National Institute for Materials Physics, PO Box MG 7, 077125 Măgurele, Ilfov, Romania
| | - A. Pérez del Pino
- grid.435283.b0000 0004 1794 1122Instituto de Ciencia de Materiales de Barcelona, Consejo Superior de Investigaciones Científicas (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Barcelona Spain
| | - E. György
- grid.435167.20000 0004 0475 5806National Institute for Lasers, Plasma and Radiation Physics, PO Box MG 36, 077125 Măgurele, Ilfov Romania ,grid.435283.b0000 0004 1794 1122Instituto de Ciencia de Materiales de Barcelona, Consejo Superior de Investigaciones Científicas (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Barcelona Spain
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Jiang H, Lu H, Zhou Y, Liu Y, Hao C. High-efficiency degradation catalytic performance of a novel Angelica sinensis polysaccharide-silver nanomaterial for dyes by ultrasonic cavitation. ULTRASONICS SONOCHEMISTRY 2023; 93:106289. [PMID: 36638651 PMCID: PMC9852643 DOI: 10.1016/j.ultsonch.2023.106289] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 01/02/2023] [Accepted: 01/04/2023] [Indexed: 06/17/2023]
Abstract
Currently, the polluted wastewater discharged by industry accounts for the major part of polluted bodies of water. As one of the industrial wastewaters, dye wastewater is characterized by high toxicity, wide pollution, and difficulty in decolorization degradation. In this paper, a novel composite nanomaterial catalyst of silver was prepared by using Angelica sinensis polysaccharide (ASP) as a reducing and stabilizing agent. And the optimum reaction conditions explored are VAgNO3 = 5 mL (300 mM) and vASP = 7% (w/v) for 6 h at 90 °C. In addition, the ASP-Ag nanocatalyst was characterized by several techniques. The results demonstrated that ASP-Ag nanoparticles were successfully synthesized. Degradation rate, which provides a numerical visualization of the percentage reduction in pollutant concentration. With the wrapping of ASP, the ultrasonic catalytic degradation rates of different organic dyes including rhodamine B (RB), methylene blue (MB), and methyl orange (MO) were from 88.2%, 88.7%, and 85.2% to 96.1%, 95.2% and 93.5% at room temperature, respectively. After the experiments, when cdyes = 10 mg/L, the highest degradation rate can be observed under cAPS-AgNPs = 10 mg/L with the most powerful cavitation frequency f = 59 kHz. The effect of ultrasonic frequency on the acoustic pressure distribution in the reactor was investigated by using COMSOL Multiphysis@ software to propose the mechanism of ultrasonic degradation and the mechanism was confirmed by OH radical trapping experiments. It indicates that OH produced by the ultrasonic cavitation effect plays a determinant role in the degradation. And then, the intermediate products of the dye degradation process were analyzed by gas chromatography and mass spectrometry (GC-MS), and the possible degradation processes of dyes were proposed. The resulting products of degradation are SO42-, NH4+, NO3-, N2, CO2 and H2O. Finally, the recycling degradation experiments showed that catalyst maintains a high degradation rate within reusing 5 cycles. Thus, this catalyst is highly efficient and recyclable.
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Affiliation(s)
- Hao Jiang
- Shaanxi Key Laboratory of Ultrasound, Shaanxi Normal University, Xi'an 710062, China; College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, China
| | - Haonan Lu
- Shaanxi Key Laboratory of Ultrasound, Shaanxi Normal University, Xi'an 710062, China; College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, China
| | - Yongshan Zhou
- Shaanxi Key Laboratory of Ultrasound, Shaanxi Normal University, Xi'an 710062, China; College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, China
| | - Yongfeng Liu
- Shaanxi Key Laboratory of Ultrasound, Shaanxi Normal University, Xi'an 710062, China; College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, China.
| | - Changchun Hao
- Shaanxi Key Laboratory of Ultrasound, Shaanxi Normal University, Xi'an 710062, China; College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710062, China.
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Construction of Highly Active Zn3In2S6 (110)/g-C3N4 System by Low Temperature Solvothermal for Efficient Degradation of Tetracycline under Visible Light. Int J Mol Sci 2022; 23:ijms232113221. [DOI: 10.3390/ijms232113221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/15/2022] [Accepted: 10/27/2022] [Indexed: 11/17/2022] Open
Abstract
Herein, Zn3In2S6 photocatalyst with (110) exposed facet was prepared by low temperature solvothermal method. On this basis, a highly efficient binary Zn3In2S6/g-C3N4 was obtained by low temperature solvothermal method and applied to the degradation of tetracycline (TC). The samples of the preparation were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscope, UV–vis diffuse reflection spectroscopy, and photoluminescence spectroscopy. Furthermore, the degradation performance of photocatalysts on TC was investigated under different experimental conditions. Finally, the mechanism of Zn3In2S6/g-C3N4 composite material degrading TC is discussed. The results show that Zn3In2S6 and Zn3In2S6/g-C3N4 photocatalysts with excellent performance could be successfully prepared at lower temperature. The Zn3In2S6/g-C3N4 heterojunction photocatalyst could significantly improve the photocatalytic activity compared with g-C3N4. After 150 min of illumination, the efficiency of 80%Zn3In2S6/g-C3N4 to degrade TC was 1.35 times that of g-C3N4. The improvement of photocatalytic activity was due to the formation of Zn3In2S6/g-C3N4 heterojunction, which promoted the transfer of photogenerated electron–holes. The cycle experiment test confirmed that Zn3In2S6/g-C3N4 composite material had excellent stability. The free radical capture experiment showed that ·O2− was the primary active material. This study provides a new strategy for the preparation of photocatalysts with excellent performance at low temperature.
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Kavitha N, Chandramohan A, Sharma D, Dinakaran K. Synthesis and microwave absorption studies on 2D graphitic carbon nitride loaded polyaniline/polyvinyl alcohol nanocomposites. HIGH PERFORM POLYM 2022. [DOI: 10.1177/09540083221134955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A light weight electromagnetic interference (EMI) shielding and microwave absorbing composite films has been developed by loading varying weight content of graphitic carbon nitride (g-C3N4) nanosheets and polyaniline (PANI) into polyvinyl alcohol (PVA) matrix. The prepared PVA/PANI/g-C3N4 (1%, 3%, 5%) composites has been subjected to FTIR, X-Ray powder diffraction, SEM, Thermal studies, Dielectric studies and electromagnetic shielding effectiveness (EMI SE) analysis. The PVA/PANI/g-C3N4 (1%, 3%, 5%) composites was discovered to have improved electrical conductivity, dielectric loss, and dielectric constant. It is observed from the SEM images that the sheet layers of g-C3N4 are wrapped by the polymer matrix and the morphology to PVA/PANI composite in the g-C3N4 indicates homogeneous blending of PVA/PANI without any phase separation and has porous in it. The PANI/g-C3N4 fractured surfaces present are smooth but irregular in appearance indicating good compatibility between the PVA and PANI matrices. The dielectric properties was found to increase on increasing the concentration of the g-C3N4 nanofiller and reached a maximum of 9.8 × 106 at 1 MHz for 3% g-C3N4 in PVA/PANI. The incorporation of g-C3N4 into PVA/PANI enhanced the conductivity and the 5% g-C3N4 loaded composite film exhibited a conductivity value of 0.043 S/cm at 1 MHz. The PVA/PANI/g-C3N4 (1%, 3%, 5%) composites exhibited potential EMI SE values ranging from 24 to 35 dB at 8.6 GHz and from 42 to 63 dB at 12.4 GHz, for instance the PVA/PANI/g-C3N4 5% composite showed highest value of 63 dB at 12.4 GHz. The PVA/PANI/g-C3N4 5% exhibits the maximum highest reflection loss 8 GHz–12 GHz in which the higher absorption of −36 dB is observed at 10.3 GHz of the X-band region.
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Affiliation(s)
| | - Ayyavu Chandramohan
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Kalavakkam, Chennai, India
| | - Devansh Sharma
- Department of Materials Engineering, Indian Institute of Science, Bangalore, Karnataka, India
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Gao WW, Su T, Gong Y, Ma XR, Zhang ZF, Song YH, Dang D, Cao LT. Enhanced Photocatalytic Activity over La(OH)3/CaTiO3 Heterostructure on the Degradation of Methylene Blue. RUSS J APPL CHEM+ 2022. [DOI: 10.1134/s1070427221120107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Chou YC, Lin YY, Lu CS, Liu FY, Lin JH, Chen FH, Chen CC, Wu WT. Controlled hydrothermal synthesis of BiO xCl y/BiO mBr n/g-C 3N 4 composites exhibiting visible-light photocatalytic activity. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 297:113256. [PMID: 34311251 DOI: 10.1016/j.jenvman.2021.113256] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 05/24/2021] [Accepted: 07/08/2021] [Indexed: 06/13/2023]
Abstract
The first systematic synthesis of bismuth oxychloride/bismuth oxybromide/graphitic carbon nitride (BiOxCly/BiOmBrn/g-C3N4) nano-composites used a controlled hydrothermal method. The structure, morphology and characteristic of BiOxCly/BiOmBrn/g-C3N4 photocatalyst were measured by XRD, UV-vis-DRS, FT-IR, FE-TEM, FE-SEM-EDS, PL, BET, HR-XPS and EPR. Under visible light irradiation, the photodegradation activity was evaluated for the decolorization of crystal violet (CV) and 2-hydroxybenzoic acid (2-HBA) in aqueous solution. The catalytic performance showed that, when using sample BB2C1-4-250-30 wt% g-C3N4 composite as a photocatalyst, the best reaction-rate-constant (k) was 0.071 h-1. It was 1.5 times higher than the k value of BB2C1-4-250 as a photocatalyst. From the scavenging effect of various scavengers, the results of EPR showed that reactive OH was the main scavenger, while O2-, h+ and 1O2 were the second scavenger in CV degradation. In this study, a possible photodegradation mechanism was proposed and discussed. In this work, our method of BiOxCly/BiOmBrn/g-C3N4 preparation could be used for future mass production and the BiOxCly/BiOmBrn/g-C3N4 composite materials could be applied to the environmental pollution control in future.
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Affiliation(s)
- Yu-Chen Chou
- Department of Science Education and Application, National Taichung University of Education, Taichung, 403, Taiwan
| | - Yu-Yun Lin
- Department of Science Education and Application, National Taichung University of Education, Taichung, 403, Taiwan
| | - Chung-Shin Lu
- Department of General Education, National Taichung University of Science and Technology, Taichung, 403, Taiwan
| | - Fu-Yu Liu
- Department of Science Education and Application, National Taichung University of Education, Taichung, 403, Taiwan
| | - Jia-Hao Lin
- Department of Science Education and Application, National Taichung University of Education, Taichung, 403, Taiwan
| | - Fu-Hsuan Chen
- Department of Science Education and Application, National Taichung University of Education, Taichung, 403, Taiwan
| | - Chiing-Chang Chen
- Department of Science Education and Application, National Taichung University of Education, Taichung, 403, Taiwan.
| | - Wu-Tsan Wu
- Department of Science Education and Application, National Taichung University of Education, Taichung, 403, Taiwan.
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de Sousa Filho IA, Freire DO, Weber IT. Organic load removal and microbial disinfection of raw domestic sewage using SrSnO 3/g-C 3N 4 with sunlight. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:45009-45018. [PMID: 33856629 DOI: 10.1007/s11356-021-13526-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 03/15/2021] [Indexed: 06/12/2023]
Abstract
Sewage treatment and water reuse are, undoubtedly, one of the main points on scientific agenda of the 21st century. Many technologies for sewage treatment are available; however, it is still as an open issue that deserves much attention in order to facilitate their application, develop more effective methods and propose alternative treatment for unusual situations. Developing high performance materials for sewage treatment fits the idea of the development of efficient and alternative methods for microorganism removal and the high organic load of wastewater and is of fundamental importance. In this paper, a heterojunction with perovskite-type strontium stannate (SrSnO3) and graphitic carbon nitride (g-C3N4) - SrSnO3/g-C3N4 - was synthesized and used for photocatalytic treatment of domestic sewage using only sunlight. Results were accompanied by assessing the total organic carbon decrease and removal of pathogenic microorganisms. X-ray diffraction and X-ray excited photoelectron spectroscopy demonstrated that a heterostructure was successfully formed and photocatalytic tests showed an important activity in the visible range, i.e., under sunlight. Exposing raw sewage to 240 min (from 11 a.m. until 3 p.m.) in the presence of SrSnO3/g-C3N4, led to a 56.1% mineralization. This process was 2.5 more efficient than photolysis under sunlight. Moreover, the treated sewage showed no coliform growth (either fecal or total) or heterotrophic bacteria. This simple treatment makes sewage suitable and safe for reuse, for example, for agriculture purposes according to Brazilian regulations criteria and could be an alternative for isolated areas in which sewage treatment plants are not available.
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Affiliation(s)
| | | | - Ingrid Távora Weber
- Instituto de Química, Universidade de Brasília, Brasília, DF, 70910-900, Brazil.
- LIMA, Chemistry Institute, University of Brasília - UnB, P.O. Box 04478, Brasília, 70904-970, Brazil.
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13
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Bhattacharyya P, Basak S, Chakrabarti S. Advancement towards Antibiotic Remediation: Heterostructure and Composite materials. ChemistrySelect 2021. [DOI: 10.1002/slct.202100436] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Puja Bhattacharyya
- Amity Institute of Nanotechnology Amity University Uttar Pradesh Noida India
| | - Sanchari Basak
- Amity Institute of Nanotechnology Amity University Uttar Pradesh Noida India
| | - Sandip Chakrabarti
- Amity Institute of Nanotechnology Amity University Uttar Pradesh Noida India
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14
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Ben SK, Gupta S, Raj KK, Chandra V. Synthesis of g‐C
3
N
4
, Zn
3
(PO
4
)
2
and g‐C
3
N
4
/Zn
3
(PO
4
)
2
Composites for Application in Photodegradation of Crystal Violet Dye under Solar Light. ChemistrySelect 2021. [DOI: 10.1002/slct.202101718] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Sachin Kumar Ben
- Department of Chemistry Dr. Harisingh Gour University Sagar (M.P.) 470003 India
| | - Sakshi Gupta
- Department of Chemistry Dr. Harisingh Gour University Sagar (M.P.) 470003 India
| | - Krishna Kumar Raj
- Department of Chemistry Dr. Harisingh Gour University Sagar (M.P.) 470003 India
| | - Vimlesh Chandra
- Department of Chemistry Dr. Harisingh Gour University Sagar (M.P.) 470003 India
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15
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Chen HL, Liu FY, Xiao X, Hu J, Gao B, Zou D, Chen CC. Visible-light-driven photocatalysis of carbon dioxide and organic pollutants by MFeO 2 (M = Li, Na, or K). J Colloid Interface Sci 2021; 601:758-772. [PMID: 34098450 DOI: 10.1016/j.jcis.2021.05.156] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 05/24/2021] [Accepted: 05/25/2021] [Indexed: 12/25/2022]
Abstract
In recent years, lithium-containing ceramic materials have attracted considerable research attention as high-temperature adsorbents of carbon dioxide. The recycling of electrode materials from spent lithium-ion batteries for use as photocatalysts in recovering CO2 and degrading organic pollutants is worthy of exploration. Solid, magnetic ferrite-containing photocatalysts are easily separated from reaction solutions by using magnetic devices. Solid catalysts (e.g., LiFeO2, LiFe5O8, NaFeO2, and K2Fe2O4) were prepared through the calcination of Fe2O3 and M2CO3. CO2 was photoreduced and crystal violet (CV) and 2-hydroxybenzoic acid (2-HBA) were photodegraded under visible light irradiation. The optimized K2Fe2O4 photocatalyst increased the rate of photocatalytic conversion from CO2 to methane at 20.9 µmol g-1 h-1. The catalytic efficiency indicated that the optimized reaction rate constants of CV with LiFeO2, NaFeO2, and K2Fe2O4 were 2.98 × 10-1, 5.32 × 10-1, and 4.36 × 10-1 h-1, respectively. The quenching effect achieved through the use of various scavengers and the electron paramagnetic resonance in CV degradation revealed the substantial contribution of the reactive superoxide anion radical O2- and the minor roles of h+ and the OH radical. Its usefulness in the synthesis of solid-base catalyst MFeO2 is promising for environmental control and relevant applications, particularly in solar energy manufacturing.
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Affiliation(s)
- Hung-Lin Chen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Fu-Yu Liu
- Department of Science Education and Application, National Taichung University of Education, Taichung 40306, Taiwan
| | - Xinyu Xiao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Jing Hu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Bo Gao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Dechun Zou
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
| | - Chiing-Chang Chen
- Department of Science Education and Application, National Taichung University of Education, Taichung 40306, Taiwan.
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16
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Bi12SiO20/g-C3N4 heterojunctions: Synthesis, characterization, photocatalytic activity for organic pollutant degradation, and mechanism. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.05.042] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Single ruthenium atom supported on g-C3N4 as an efficient photocatalyst for nitrogen fixation in ultra-pure water. CATAL COMMUN 2021. [DOI: 10.1016/j.catcom.2021.106294] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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18
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El-Sheikh MA, Hadibarata T, Yuniarto A, Sathishkumar P, Abdel-Salam EM, Alatar AA. Role of nanocatalyst in the treatment of organochlorine compounds - A review. CHEMOSPHERE 2021; 268:128873. [PMID: 33220978 DOI: 10.1016/j.chemosphere.2020.128873] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 10/20/2020] [Accepted: 10/31/2020] [Indexed: 06/11/2023]
Abstract
Since a few centuries ago, organochlorine compounds (OCs) become one of the threatened contaminants in the world. Due to the lipophilic and hydrophobic properties, OCs always discover in fat or lipid layers through bioaccumulation and biomagnification. The OCs are able to retain in soil, sediment and water for long time as it is volatile, OCs will evaporate from soil and condense in water easily and frequently, which pollute the shelter of aquatic life and it affects the function of organs and damage system in human body. Photocatalysis that employs the usage of semiconductor nanophotocatalyst and solar energy can be the possible alternative for current conventional water remediation technologies. With the benefits of utilizing renewable energy, no production of harmful by-products and easy operation, degradation of organic pollutants in rural water bodies can be established. Besides, nanophotocatalyst that is synthesized with nanotechnology outnumbered conventional catalyst with larger surface area to volume ratio, thus higher photocatalytic activity is observed. In contrast, disadvantages particularly no residual effect in water distribution network, requirement of post-treatment and easily affected by various factors accompanied with photocatalysis method cannot be ignored. These various factors constrained the photocatalytic efficiency via nanocatalysts which causes the full capacity of solar photocatalysis has yet to be put into practice. Therefore, further modifications and research are still required in nanophotocatalysts' synthesis to overcome limitations such as large band gaps and photodecontamination.
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Affiliation(s)
- Mohamed A El-Sheikh
- Botany & Microbiology Department, College of Science, King Saud University, P.O. Box. 2455, Riyadh, 11451, Saudi Arabia; Botany Department, Faculty of Science, Damanhour University, Damanhour, 22516, Egypt
| | - Tony Hadibarata
- Department of Environmental Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri, Malaysia.
| | - Adhi Yuniarto
- Department of Environmental Engineering, Faculty of Civil, Planning, and Geo-Engineering, Institut Teknologi Sepuluh Nopember, Surabaya, 60111, Indonesia
| | - Palanivel Sathishkumar
- Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, School of Chemistry, South China Normal University, Guangzhou, 510006, PR China.
| | - Eslam M Abdel-Salam
- Botany & Microbiology Department, College of Science, King Saud University, P.O. Box. 2455, Riyadh, 11451, Saudi Arabia
| | - Abdulrahman A Alatar
- Botany & Microbiology Department, College of Science, King Saud University, P.O. Box. 2455, Riyadh, 11451, Saudi Arabia
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19
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Abd El-Naser A, Abdel-Khalek EK, Nabhan E, Rayan D, Gaafar MS, Abd El-Aal NS. Study the influence of oxygen-deficient (δ = 0.135) in SrFeO 3-δ nanoparticles perovskite on structural, electrical and magnetic properties. PHILOSOPHICAL MAGAZINE 2021; 101:710-728. [DOI: 10.1080/14786435.2020.1862427] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 11/16/2020] [Indexed: 09/01/2023]
Affiliation(s)
- A. Abd El-Naser
- Department of Physics, Faculty of Science (Girl's Branch), Al-Azhar University, Cairo, Egypt
- Ultrasonic Laboratory, National Institute for Standards, El-Giza, Egypt
| | - E. K. Abdel-Khalek
- Department of Physics, Faculty of Science, Al-Azhar University, Cairo, Egypt
| | - E. Nabhan
- Department of Physics, Faculty of Science (Girl's Branch), Al-Azhar University, Cairo, Egypt
| | - D.A. Rayan
- Central Metallurgical Research & Development Institute (CMRDI), Cairo, Egypt
| | - M. S. Gaafar
- Ultrasonic Laboratory, National Institute for Standards, El-Giza, Egypt
| | - N. S. Abd El-Aal
- Ultrasonic Laboratory, National Institute for Standards, El-Giza, Egypt
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20
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Bankole OM, Olorunsola TD, Ogunlaja AS. Photocatalytic decontamination of toxic hexavalent chromium in water over graphitic carbon nitride supported sulfur nanoparticles. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2020.112934] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Sayed M, Khan A, Rauf S, Shah NS, Rehman F, A. Al-Kahtani A, Khan JA, Iqbal J, Boczkaj G, Gul I, Bushra M. Bismuth-Doped Nano Zerovalent Iron: A Novel Catalyst for Chloramphenicol Degradation and Hydrogen Production. ACS OMEGA 2020; 5:30610-30624. [PMID: 33283110 PMCID: PMC7711945 DOI: 10.1021/acsomega.0c04574] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 11/03/2020] [Indexed: 05/24/2023]
Abstract
In this study, we showed that doping bismuth (Bi) at the surface of Fe0 (Bi/Fe0, bimetallic iron system)-synthesized by a simple borohydride reduction method-can considerably accelerate the reductive degradation of chloramphenicol (CHP). At a reaction time of 12 min, 62, 68, 74, 95, and 82% degradation of CHP was achieved with Fe0, Bi/Fe0-1 [1% (w/w) of Bi], Bi/Fe0-3 [3% (w/w) of Bi], Bi/Fe0-5 [5% (w/w) of Bi], and Bi/Fe0-8 [8% (w/w) of Bi], respectively. Further improvements in the degradation efficiency of CHP were observed by combining the peroxymonosulfate (HSO5 -) with Bi/Fe0-5 (i.e., 81% by Bi/Fe0-5 and 98% by the Bi/Fe0-5/HSO5 - system at 8 min of treatment). Interestingly, both Fe0 and Bi/Fe0-5 showed effective H2 production under dark conditions that reached 544 and 712 μM by Fe0 and Bi/Fe0-5, respectively, in 70 mL of aqueous solution containing 0.07 g (i.e., at 1 g L-1 concentration) of the catalyst at ambient temperature.
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Affiliation(s)
- Murtaza Sayed
- Radiation
Chemistry Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan
| | - Aamir Khan
- Radiation
Chemistry Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan
| | - Sajid Rauf
- Hubei
Collaborative Innovation Center for Advanced Organic Chemical Materials,
Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei 430062, PR China
| | - Noor S. Shah
- Department
of Environmental Sciences, COMSATS University
Islamabad, Vehari Campus, Vehari 61100, Pakistan
| | - Faiza Rehman
- Department
of Chemistry, University of Poonch, Rawalakot 12350, Azad Kashmir, Pakistan
| | - Abdullah A. Al-Kahtani
- Chemistry
Department, College of Science, King Saud
University, Riyadh 11451, Saudi Arabia
| | - Javed Ali Khan
- Radiation
Chemistry Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan
| | - Jibran Iqbal
- College
of
Natural and Health Sciences, Zayed University, P.O. Box 144534 Abu Dhabi, United Arab Emirates
| | - Grzegorz Boczkaj
- Department
of Process Engineering and Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, G. Narutowicza St. 11/12, Gdansk 80-233, Poland
| | - Ikhtiar Gul
- Radiation
Chemistry Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan
| | - Maleeha Bushra
- Radiation
Chemistry Laboratory, National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan
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22
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Vilian ATE, Oh SY, Rethinasabapathy M, Umapathi R, Hwang SK, Oh CW, Park B, Huh YS, Han YK. Improved conductivity of flower-like MnWO 4 on defect engineered graphitic carbon nitride as an efficient electrocatalyst for ultrasensitive sensing of chloramphenicol. JOURNAL OF HAZARDOUS MATERIALS 2020; 399:122868. [PMID: 32531674 DOI: 10.1016/j.jhazmat.2020.122868] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 04/26/2020] [Accepted: 04/26/2020] [Indexed: 06/11/2023]
Abstract
Environmental hazards caused by chloramphenicol has attained special attention. Fast, accurate and reliable detection of chloramphenicol in foodstuffs and water samples is of utmost importance. Herein, we developed a g-C3N4/MnWO4 composite for the selective and sensitive detection of chloramphenicol. Successful fabrication of g-C3N4/MnWO4 composite was verified by using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, Fourier transform infrared spectroscopy (FT-IR), x-ray diffraction (XRD) and x-ray photo electron spectroscopy (XPS) techniques. Electrochemical characteristics were evaluated by using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and differential pulse voltammetry (DPV). The g-C3N4/MnWO4 modified glassy carbon electrode has shown the highest electrocatalytic activity towards chloramphenicol with a decreased reduction potential of -0.547 V and increased cathodic peak current. The developed sensor has shown excellent performance for the detection of chloramphenicol with a sensitivity of 0.9986 μA nM-1 cm-2 and LOD of 1.03 nM in a broad linear range of 4.0-71 nM. In addition, the fabricated sensor has achieved anti-interference ability, good stability, excellent repeatability and remarkable reproducibility for the detection of chloramphenicol. The fabricated sensor applied for the determination of chloramphenicol in milk, human blood serum and sewage samples, in which significant and satisfactory results were achieved.
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Affiliation(s)
- A T Ezhil Vilian
- Department of Energy and Materials Engineering, Dongguk University, Seoul 100-715, Republic of Korea
| | - Seo Young Oh
- Department of Biological Engineering, Inha University, Incheon 402-751, Republic of Korea
| | | | - Reddicherla Umapathi
- Department of Biological Engineering, Inha University, Incheon 402-751, Republic of Korea
| | - Seung-Kyu Hwang
- Department of Biological Engineering, Inha University, Incheon 402-751, Republic of Korea
| | - Cheol Woo Oh
- Department of Biological Engineering, Inha University, Incheon 402-751, Republic of Korea
| | - Bumjun Park
- Department of Biological Engineering, Inha University, Incheon 402-751, Republic of Korea
| | - Yun Suk Huh
- Department of Biological Engineering, Inha University, Incheon 402-751, Republic of Korea.
| | - Young-Kyu Han
- Department of Energy and Materials Engineering, Dongguk University, Seoul 100-715, Republic of Korea.
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23
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Long Z, Li Q, Wei T, Zhang G, Ren Z. Historical development and prospects of photocatalysts for pollutant removal in water. JOURNAL OF HAZARDOUS MATERIALS 2020; 395:122599. [PMID: 32302881 DOI: 10.1016/j.jhazmat.2020.122599] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/25/2020] [Accepted: 03/26/2020] [Indexed: 05/21/2023]
Abstract
Photocatalysis, as a low-cost and environment friendly technology, has demonstrated a significant potential for water pollution purification; it has received extensive attention in recent decades. The key is the photocatalyst; a large number of photocatalysts have been developed. To better understand and further develop the photocatalysis technology for water treatment, this review summarizes its development over time. The development period is divided into four stages (1960s-1993, 1994-2000, 2001-2010, and 2011-present) to provide readers with a better understanding of the development characteristics, and causes and consequences of each historical stage. This review expounds the origin and development of photocatalysis and the obstacles encountered and overcome. It describes the development of mechanisms and methods to solve these problems in each time period. Moreover, it reviews the recent development of new photocatalysts, the concept of designing photocatalysts, and photocatalytic-coupling systems. Finally, it enumerates the problems that continue to exist in the application of photocatalysis technology, and highlights the key issues that must be addressed in future research. The review is aimed at providing the researchers with a deeper understanding of photocatalysis technology and encourage further development of the application of photocatalysis to water treatment.
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Affiliation(s)
- Zeqing Long
- School of Energy & Environmental Engineering, Hebei University of Technology, Tianjin, 300130, China; School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - Qiangang Li
- School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - Ting Wei
- School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - Guangming Zhang
- School of Energy & Environmental Engineering, Hebei University of Technology, Tianjin, 300130, China; School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - Zhijun Ren
- School of Energy & Environmental Engineering, Hebei University of Technology, Tianjin, 300130, China.
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24
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Naciri Y, Hsini A, Ajmal Z, Bouddouch A, Bakiz B, Navío J, Albourine A, Valmalette JC, Ezahri M, Benlhachemi A. Influence of Sr-doping on structural, optical and photocatalytic properties of synthesized Ca3(PO4)2. J Colloid Interface Sci 2020; 572:269-280. [DOI: 10.1016/j.jcis.2020.03.105] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 10/24/2022]
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25
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Synthesizing Co3O4-BiVO4/g-C3N4 heterojunction composites for superior photocatalytic redox activity. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116562] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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26
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Dong H, Xiao M, Li J, Hu W, Sun X, Liu Y, Zhang P, Che G, Liu C. Construction of H-TiO2/BiOCl heterojunction with improved photocatalytic activity under the visible and near-infrared light. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112369] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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27
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Tripathi RM, Hameed P, Rao RP, Shrivastava N, Mittal J, Mohapatra S. Biosynthesis of Highly Stable Fluorescent Selenium Nanoparticles and the Evaluation of Their Photocatalytic Degradation of Dye. BIONANOSCIENCE 2020. [DOI: 10.1007/s12668-020-00718-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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28
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Armaković SJ, Grujić-Brojčin M, Šćepanović M, Armaković S, Golubović A, Babić B, Abramović BF. Efficiency of La-doped TiO2 calcined at different temperatures in photocatalytic degradation of β-blockers. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2017.01.001] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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29
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Xu Q, Song Z, Ji S, Xu G, Shi W, Shen L. The photocatalytic degradation of chloramphenicol with electrospun Bi 2O 2CO 3-poly(ethylene oxide) nanofibers: the synthesis of crosslinked polymer, degradation kinetics, mechanism and cytotoxicity. RSC Adv 2019; 9:29917-29926. [PMID: 35531516 PMCID: PMC9072081 DOI: 10.1039/c9ra06346c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 09/01/2019] [Indexed: 11/21/2022] Open
Abstract
Insoluble poly(ethylene oxide) (PEO) nanofibers were synthesized by adding pentaerythrotol triacrylate (PETA) into precursor solutions prior to electrospinning, and then the obtained fibers were exposed to an electron beam (EB) irradiation. Bi2O2CO3 was incorporated into these fibers to extend their photocatalytic properties. Studies confirmed that EB irradiation induced characteristic changes in PEO and led to the formation of a crosslinked structure, from which we optimized the irradiation dose of fibers as 210 kGy. The optimum PEO/Bi2O2CO3 membranes achieved 99.5% CPL degradation within 60 min, and we also proposed the possible degradation pathways of CPL in this study. Besides, all the water samples and extracts of nanomaterials showed no cytotoxicity on L-929 cells. The subtle variations in the cell viability of treated and untreated water samples could be due to the toxic intermediates arising from the photocatalytic process. Therefore, this photocatalyst-polymer membrane can be considered as a biocompatible composite system that can change the solubility of a polymer and also act as a highly efficient photocatalyst for organic wastewater treatments.
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Affiliation(s)
- Qin Xu
- School of Environmental and Chemical Engineering, Shanghai University Shanghai 200444 PR China +86 21 6613 7787 +86 21 6613 5127
| | - Zijuan Song
- School of Environmental and Chemical Engineering, Shanghai University Shanghai 200444 PR China +86 21 6613 7787 +86 21 6613 5127
| | - Shuting Ji
- School of Environmental and Chemical Engineering, Shanghai University Shanghai 200444 PR China +86 21 6613 7787 +86 21 6613 5127
| | - Gang Xu
- School of Environmental and Chemical Engineering, Shanghai University Shanghai 200444 PR China +86 21 6613 7787 +86 21 6613 5127
| | - Wenyan Shi
- School of Environmental and Chemical Engineering, Shanghai University Shanghai 200444 PR China +86 21 6613 7787 +86 21 6613 5127
| | - Longxiang Shen
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital Shanghai 200233 PR China +86 21 2405 8009 +86 21 2405 8121
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30
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Miao S, Zha Z, Li Y, Geng X, Yang J, Cui S, Yang J. Visible-light-driven MIL-53(Fe)/BiOCl composite assisted by persulfate: Photocatalytic performance and mechanism. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111862] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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31
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Visible-Light-Driven Photocatalytic Activity of Magnetic BiOBr/SrFe 12O 19 Nanosheets. NANOMATERIALS 2019; 9:nano9050735. [PMID: 31086014 PMCID: PMC6567020 DOI: 10.3390/nano9050735] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 05/05/2019] [Accepted: 05/06/2019] [Indexed: 12/14/2022]
Abstract
Magnetic BiOBr/SrFe12O19 nanosheets were successfully synthesized using the hydrothermal method. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and UV-visible diffused reflectance spectra (UV-DRS), and the magnetic properties were tested using a vibration sample magnetometer (VSM). The as-produced composite with an irregular flaky-shaped aggregate possesses a good anti-demagnetization ability (Hc = 861.04 G) and a high photocatalytic efficiency. Under visible light (λ > 420 nm) and UV light-emitting diode (LED) irradiation, the photodegradation rates of Rhodamine B (RhB) using BiOBr/SrFe12O19 (5 wt %) (BOB/SFO-5) after 30 min of reaction were 97% and 98%, respectively, which were higher than that using BiOBr (87%). The degradation rate of RhB using the recovered BiOBr/5 wt % SrFe12O19 (marked as BOB/SFO-5) was still more than 85% in the fifth cycle, indicating the high stability of the composite catalyst. Meanwhile, after five cycles, the magnetic properties were still as stable as before. The radical-capture experiments proved that superoxide radicals and holes were main active species in the photocatalytic degradation of RhB.
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Wang CY, Wu T, Lin YW. Preparation and characterization of bismuth oxychloride/reduced graphene oxide for photocatalytic degradation of rhodamine B under white-light light-emitting-diode and sunlight irradiation. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.11.043] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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33
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Zarrabi M, Haghighi M, Alizadeh R. Enhanced sono-dispersion of Bi5O7I and Bi2ClHO3 oxides over ZnO used as nanophotocatalyst in solar-light-driven removal of methylene blue from water. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.10.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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34
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Xu J, Zhang S, Liu X, Bian F, Jiang H. Rh/polymeric carbon nitride porous tubular catalyst: visible light enhanced chlorophenol hydrodechlorination in base-free aqueous medium. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01816f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel porous tubular Rh/PCN exhibited highly promoted activity in hydrodechlorination of harmful chlorophenols to high-value cyclohexanol and cyclohexanone with base-free aqueous medium and balloon H2 pressure under the irradiation of visible light.
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Affiliation(s)
- Jie Xu
- Key Laboratory of Catalysis Science and Technology of Chongqing Education Commission
- Chongqing Key Laboratory of Catalysis and Functional Organic Molecules
- Chongqing Technology and Business University
- Chongqing 400067
- P.R. China
| | - Sishi Zhang
- Key Laboratory of Catalysis Science and Technology of Chongqing Education Commission
- Chongqing Key Laboratory of Catalysis and Functional Organic Molecules
- Chongqing Technology and Business University
- Chongqing 400067
- P.R. China
| | - Xingyan Liu
- Key Laboratory of Catalysis Science and Technology of Chongqing Education Commission
- Chongqing Key Laboratory of Catalysis and Functional Organic Molecules
- Chongqing Technology and Business University
- Chongqing 400067
- P.R. China
| | - Fengxia Bian
- Key Laboratory of Catalysis Science and Technology of Chongqing Education Commission
- Chongqing Key Laboratory of Catalysis and Functional Organic Molecules
- Chongqing Technology and Business University
- Chongqing 400067
- P.R. China
| | - Heyan Jiang
- Key Laboratory of Catalysis Science and Technology of Chongqing Education Commission
- Chongqing Key Laboratory of Catalysis and Functional Organic Molecules
- Chongqing Technology and Business University
- Chongqing 400067
- P.R. China
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35
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Chen CC, Fu JY, Chang JL, Huang ST, Yeh TW, Hung JT, Huang PH, Liu FY, Chen LW. Bismuth oxyfluoride/bismuth oxyiodide nanocomposites enhance visible-light-driven photocatalytic activity. J Colloid Interface Sci 2018; 532:375-386. [DOI: 10.1016/j.jcis.2018.07.130] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 07/26/2018] [Accepted: 07/29/2018] [Indexed: 11/28/2022]
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36
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Yi H, Jiang M, Huang D, Zeng G, Lai C, Qin L, Zhou C, Li B, Liu X, Cheng M, Xue W, Xu P, Zhang C. Advanced photocatalytic Fenton-like process over biomimetic hemin-Bi2WO6 with enhanced pH. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.06.037] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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37
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Jiang D, Du X, Liu Q, Hao N, Wang K. MoS 2/nitrogen doped graphene hydrogels p-n heterojunction: Efficient charge transfer property for highly sensitive and selective photoelectrochemical analysis of chloramphenicol. Biosens Bioelectron 2018; 126:463-469. [PMID: 30472443 DOI: 10.1016/j.bios.2018.11.018] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 11/08/2018] [Accepted: 11/13/2018] [Indexed: 02/06/2023]
Abstract
Constructing junctions between semiconductors is an effective way to promote charge separation and thus to improve the photoelectrochemical (PEC) performances, and specifically, p-n heterojunction is considered as a very promising structure. Herein, we designed and fabricated MoS2/nitrogen doped graphene hydrogels (MoS2/NGH) p-n heterojunction by a facile one-pot hydrothermal route. The as-fabricaterd MoS2/NGH heterostructures demonstrated the excellent PEC activity, exhibiting enhanced photocurrent intensity by the fast transfer and separation rate of photogenerated electron-hole owing to the construction of p-n heterojunction. Based on the high PEC performances of the MoS2/NGH heterostructure, a novel sensitive PEC sensor was developed for the determination of chloramphenicol (CAP) with the assistance of aptamer. In the presence of target molecules, the as-fabricated PEC sensor could recognize the CAP quickly and then consume the holes in the interface of heterostructures, inhibiting the recombination of photogenerated electron-hole pairs, resulting the enhanced photocurrent. Specially, with the concentration of CAP increased, the photocurrent enhanced gradually. Excellent linearity was obtained in the concentration range from 32.3 ng/L to 96.9 μg/L, and the limit of detection was 3.23 ng/L. Moreover, the as-fabricated PEC sensor exhibited rapid response, high stability, low-cost and high selectivity, which could be successfully applied to the analysis of CAP in honeycomb samples.
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Affiliation(s)
- Ding Jiang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China; Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Xiaojiao Du
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Qian Liu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Nan Hao
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Kun Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China; Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China.
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Gao H, Cai M, Liao Y. Enhance photocatalytic properties of TiO2 using π-π* conjugate system. J DISPER SCI TECHNOL 2018. [DOI: 10.1080/01932691.2018.1518143] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Hejun Gao
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong, China
- Institute of Applied Chemistry, China West Normal University, Nanchong, China
| | - Minghan Cai
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong, China
| | - Yunwen Liao
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong, China
- College of Environmental Science and Engineering, China West Normal University, Nanchong, China
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39
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Controlled hydrothermal synthesis of bismuth oxychloride/bismuth oxybromide/bismuth oxyiodide composites exhibiting visible-light photocatalytic degradation of 2-hydroxybenzoic acid and crystal violet. J Colloid Interface Sci 2018; 526:322-336. [DOI: 10.1016/j.jcis.2018.04.097] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 04/23/2018] [Accepted: 04/25/2018] [Indexed: 12/13/2022]
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40
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Liu FY, Lin JH, Dai YM, Chen LW, Huang ST, Yeh TW, Chang JL, Chen CC. Preparation of perovskites PbBiO2I/PbO exhibiting visible-light photocatalytic activity. Catal Today 2018. [DOI: 10.1016/j.cattod.2018.02.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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41
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BiOmFn/BiOxIy/GO Nanocomposites: Synthesis, characterization, and photocatalytic activity. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.06.014] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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42
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Sajid MM, Khan SB, Shad NA, Amin N, Zhang Z. Visible light assisted photocatalytic degradation of crystal violet dye and electrochemical detection of ascorbic acid using a BiVO 4/FeVO 4 heterojunction composite. RSC Adv 2018; 8:23489-23498. [PMID: 35540250 PMCID: PMC9081775 DOI: 10.1039/c8ra03890b] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 06/12/2018] [Indexed: 11/21/2022] Open
Abstract
A BiVO4/FeVO4 nanocomposite photocatalyst was successfully synthesized via a hydrothermal method. The prepared heterojunction photocatalyst was characterized physically and chemically using XRD, SEM, EDX, XPS, BET, FT-IR, Raman, UV-vis DRS, EPR and photoluminescence techniques. BiVO4/FeVO4 was explored for its photocatalytic activity by the decomposition of crystal violet (CV) organic dye under visible radiation. This experiment showed that BiVO4/FeVO4 at a ratio of 2 : 1 completely degrades CV within 60 min. In addition, BiVO4/FeVO4 was investigated for the electrochemical detection of the useful analyte ascorbic acid using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry techniques. This work reveals the potential of the BiVO4/FeVO4 nanocomposite for applications in environmental disciplines as well as in biosensing.
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Affiliation(s)
- Muhammad Munir Sajid
- Department of Physics, Government College University Allama Iqbal Road Faisalabad 38000 Pakistan
- The State Key Laboratory for New Ceramics & Fine Processing, School of Materials Science & Engineering, Tsinghua University Beijing China 100084
| | - Sadaf Bashir Khan
- The State Key Laboratory for New Ceramics & Fine Processing, School of Materials Science & Engineering, Tsinghua University Beijing China 100084
| | - Naveed Akthar Shad
- Department of Physics, Government College University Allama Iqbal Road Faisalabad 38000 Pakistan
- National Institute for Biotechnology and Genetic Engineering (NIBGE) P. O. Box. 577, Jhang Road Faisalabad Pakistan
| | - Nasir Amin
- Department of Physics, Government College University Allama Iqbal Road Faisalabad 38000 Pakistan
| | - Zhengjun Zhang
- Advanced Key Laboratory for New Ceramics, School of Materials Science & Engineering, Tsinghua University Beijing China 100084
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43
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Marchelek M, Grabowska E, Klimczuk T, Lisowski W, Mazierski P, Zaleska-Medynska A. Visible light photocatalysis employing TiO2/SrTiO3-BiOI composites: Surface properties and photoexcitation mechanism. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.04.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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44
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Liu FY, Jiang YR, Chen CC, Lee WW. Novel synthesis of PbBiO2Cl/BiOCl nanocomposite with enhanced visible-driven-light photocatalytic activity. Catal Today 2018. [DOI: 10.1016/j.cattod.2017.04.030] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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45
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Che H, Liu C, Hu W, Hu H, Li J, Dou J, Shi W, Li C, Dong H. NGQD active sites as effective collectors of charge carriers for improving the photocatalytic performance of Z-scheme g-C3N4/Bi2WO6 heterojunctions. Catal Sci Technol 2018. [DOI: 10.1039/c7cy01709j] [Citation(s) in RCA: 154] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
NGQDs as effective active sites and collectors of charge carriers in Z-scheme g-C3N4/Bi2WO6 heterojunctions.
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Affiliation(s)
- Huinan Che
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Chunbo Liu
- Institute of Green Chemistry and Chemical Technology
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Wei Hu
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Hao Hu
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Jinqiao Li
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Jianying Dou
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Weidong Shi
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Chunmei Li
- Institute of Green Chemistry and Chemical Technology
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Hongjun Dong
- Institute of Green Chemistry and Chemical Technology
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
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46
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Li WQ, Wen ZH, Tian SH, Shan LJ, Xiong Y. Citric acid-assisted hydrothermal synthesis of a self-modified Bi2SiO5/Bi12SiO20 heterojunction for efficient photocatalytic degradation of aqueous pollutants. Catal Sci Technol 2018. [DOI: 10.1039/c7cy02272g] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The phase composition and weight ratio of Bi12SiO20 and Bi2SiO5 in the heterojunction can be tuned by simply adjusting the CA dosage.
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Affiliation(s)
- W. Q. Li
- School of Environmental Science and Engineering
- Sun Yat-Sen (Zhongshan) University
- Guangzhou 510275
- PR China
| | - Z. H. Wen
- School of Environmental Science and Engineering
- Sun Yat-Sen (Zhongshan) University
- Guangzhou 510275
- PR China
| | - S. H. Tian
- School of Environmental Science and Engineering
- Sun Yat-Sen (Zhongshan) University
- Guangzhou 510275
- PR China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology
| | - L. J. Shan
- School of Environmental Science and Engineering
- Sun Yat-Sen (Zhongshan) University
- Guangzhou 510275
- PR China
| | - Y. Xiong
- School of Environmental Science and Engineering
- Sun Yat-Sen (Zhongshan) University
- Guangzhou 510275
- PR China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology
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47
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Zhang D, Wang F, Cao S, Duan X. Investigation on enhanced photocatalytic degradation of bisphenol A with bismuth oxyiodide catalyst using response surface methodology. RSC Adv 2018; 8:5967-5975. [PMID: 35539611 PMCID: PMC9078159 DOI: 10.1039/c7ra13460f] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 01/29/2018] [Indexed: 11/21/2022] Open
Abstract
In this study, Bi7O9I3 photocatalyst was successfully synthesized via a simple and rapid microwave irradiation method. The characterization of prepared photocatalysts was determined by powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive spectrometry (EDS), UV-vis diffuse reflectance spectroscopy (DRS) and photoluminescence (PL). The photocatalytic performance was determines by the degradation of bisphenol A (BPA) under xenon lamp illumination. The Bi7O9I3 catalyst exhibited superior photocatalytic performance and the first-order kinetic rate constant of Bi7O9I3 was about 4.2 times greater than that of BiOI. The enhanced photocatalytic activity was associated with surface morphology, suitable band gap energy and low recombination rate of electron–hole pairs. Furthermore, the photocatalytic efficiency of BPA with Bi7O9I3 was systematically investigated using a three factor, three level Box–Behnken experimental design and response surface methodology (RSM). A quadratic polynomial model was proposed. Experimental and predicted values exhibited a good correlation with a predicted R2 value of 0.9016. A relative significance study of three independent variables showed that catalyst dosage had the most significant positive effect on the degradation of BPA, followed by initial concentration of BPA and pH value. The prepared Bi7O9I3 is a promising photocatalyst for practical application in organic pollutant decomposition. Bi7O9I3 was synthesized via a microwave irradiation method and the influence of different parameters on BPA degradation was investigated using a response surface methodology.![]()
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Affiliation(s)
- Dan Zhang
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Fei Wang
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Suzhen Cao
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Xiaoli Duan
- School of Energy and Environmental Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
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Gao B, Chen W, Dong S, Liu J, Liu T, Wang L, Sillanpää M. Polypyrrole/ZnIn2S4 composite photocatalyst for enhanced mineralization of chloramphenicol under visible light. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.09.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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49
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Wang XL, Song G, Lin HY, Wang X, Liu GC, Rong X. Polyoxometalate-induced different metal–organic frameworks based on isonicotinic acid and AgI ion: Syntheses, structures and properties. INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.08.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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50
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Synthesis and characterization of Bi4Si3O12, Bi2SiO5, and Bi12SiO20 by controlled hydrothermal method and their photocatalytic activity. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.05.021] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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