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Khan MS, Riaz N, Shaikh AJ, Shah JA, Hussain J, Irshad M, Awan MS, Syed A, Kallerhoff J, Arshad M, Bilal M. Graphene quantum dot and iron co-doped TiO 2 photocatalysts: Synthesis, performance evaluation and phytotoxicity studies. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 226:112855. [PMID: 34628153 DOI: 10.1016/j.ecoenv.2021.112855] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 09/24/2021] [Accepted: 09/29/2021] [Indexed: 06/13/2023]
Abstract
The present study reports the synthesis, photocatalytic decolorization of reactive black 5 dye and phytotoxicity of graphene quantum dots (GQDs) and iron co-doped TiO2 photocatalysts via modified sol gel method. GQDs were synthesized by direct pyrolysis of citric acid (CA). Scanning electron microscopy (SEM) and energy dispersion spectroscopy (EDS), Raman spectroscopy, atomic force microscopy (AFM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), diffuse reflectance spectroscopy (DRS), Brunauer-Emmett-Teller (BET) and photoluminescence spectroscopy (PL) were used to determine the physicochemical properties of the best performing photocatalysts. The results indicated improved physicochemical properties of GQD-0.1Fe-TiO2-300 with root mean square roughness (Rz) (33.82 nm), higher surface area (170.79 m2 g-1), pore volume (0.08 cm3 g-1), and bandgap (2.94 eV). Moreover, GQD-0.1Fe co-doping of TiO2 greatly improved the photocatalytic decolorization efficiency for RB5 dye. The photocatalytic reaction followed the pseudo first order reaction with gradual decrease in Kapp values for increment in RB5 concentration. The KC value was obtained as 2.45 mg L-1 min-1 while the KLH value was 0.45 L mg-1 indicating the heterogeneous reaction system followed the Langmuir-Hinshelwood isotherm and simultaneously occurring adsorption and photocatalytic processes. Photocatalytic reaction mechanism studies exhibited the holes and OH radicals as the main active species in the GQD-0.1Fe-TiO2-300 responsible for the decolorization of RB5. The proposed reaction pathway showed that both Fe-TiO2 and GQDs play important role in generation of electrons and holes. Additionally, GQD-0.1Fe-TiO2-300 were durable up to four cycles. Phytotoxicity assay displayed that treated water and best performing photocatalysts had no effect on Lycopersicon esculentum seed germination. Therefore, the proposed system can pave a viable solution for safe usage of dye loaded wastewater and effluent for irrigation after treatment.
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Affiliation(s)
- Muhammad Saqib Khan
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Nadia Riaz
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Ahson Jabbar Shaikh
- Department of Chemistry, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Jehanzeb Ali Shah
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Jamshaid Hussain
- Department of Biotechnology, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Muhammad Irshad
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - M Saifullah Awan
- Nano Science and Technology Department, National Centre for Physics (NCP), Shahdra Valley Road, Islamabad 44000, Pakistan
| | - Asad Syed
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455 Riyadh 11451, Saudi Arabia
| | | | - Muhammad Arshad
- Institute of Environmental Sciences and Engineering, School of Civil and Environmental Engineering, National University of Sciences and Technology, Islamabad 44000, Pakistan.
| | - Muhammad Bilal
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan.
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2
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Photocatalysis and Li-Ion Battery Applications of {001} Faceted Anatase TiO2-Based Composites. J 2021. [DOI: 10.3390/j4030038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Anatase TiO2 are the most widely used photocatalysts because of their unique electronic, optical and catalytic properties. Surface chemistry plays a very important role in the various applications of anatase TiO2 especially in the catalysis, photocatalysis, energy conversion and energy storage. Control of the surface structure by crystal facet engineering has become an important strategy for tuning and optimizing the physicochemical properties of TiO2. For anatase TiO2, the {001} crystal facets are the most reactive because they exhibit unique surface characteristics such as visible light responsiveness, dissociative adsorption, efficient charge separation capabilities and photocatalytic selectivity. In this review, a concise survey of the literature in the field of {001} dominated anatase TiO2 crystals and their composites is presented. To begin, the existing strategies for the synthesis of {001} dominated anatase TiO2 and their composites are discussed. These synthesis strategies include both fluorine-mediated and fluorine-free synthesis routes. Then, a detailed account of the effect of {001} facets on the physicochemical properties of TiO2 and their composites are reviewed, with a particular focus on photocatalysis and Li-ion batteries applications. Finally, an outlook is given on future strategies discussing the remaining challenges for the development of {001} dominated TiO2 nanomaterials and their potential applications.
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3
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Construction of Novel Z-Scheme N-CQDs/Sn3O4 Heterojunction for Excellent Photocatalytic Degradation of Organic Pollutant. J CLUST SCI 2021. [DOI: 10.1007/s10876-021-02020-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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4
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Tan JZY, Gavrielides S, Belekoukia M, Thompson WA, Negahdar L, Xia F, Maroto-Valer MM, Beale AM. Synthesis of TiO 2-x/W 18O 49 hollow double-shell and core-shell microspheres for CO 2 photoreduction under visible light. Chem Commun (Camb) 2020; 56:12150-12153. [PMID: 32909021 DOI: 10.1039/d0cc04036c] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
TiO2-x/W18O49 with core-shell or double-shelled hollow microspheres were synthesized through a facile multi-step solvothermal method. The formation of the hollow microspheres with a double-shell was a result of the Kirkendall effect during the solvothermal treatment with concentrated NaOH. The advanced architecture significantly enhanced the electronic properties of TiO2-x/W18O49, improving by more than 30 times the CO2 photoreduction efficiency compared to the pristine W18O49. Operando DRIFTS measurements revealed that the yellow TiO2-x was a preferable CO2 adsorption and conversion site.
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Affiliation(s)
- Jeannie Z Y Tan
- Research Centre for Carbon Solutions (RCCS), Heriot-Watt University, Edinburgh EH14 4AS, UK.
| | - Stelios Gavrielides
- Research Centre for Carbon Solutions (RCCS), Heriot-Watt University, Edinburgh EH14 4AS, UK.
| | - Meltiani Belekoukia
- Research Centre for Carbon Solutions (RCCS), Heriot-Watt University, Edinburgh EH14 4AS, UK.
| | - Warren A Thompson
- Research Centre for Carbon Solutions (RCCS), Heriot-Watt University, Edinburgh EH14 4AS, UK.
| | - Leila Negahdar
- Department of Chemistry, UCL, 20 Gordon Street, London, WC1H 0AJ, UK and UK Catalysis Hub, Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell, Oxfordshire OX11 0FA, UK
| | - Fang Xia
- College of Science, Health, Engineering and Education, Murdoch University, Murdoch, Western Australia 6150, Australia
| | - M Mercedes Maroto-Valer
- Research Centre for Carbon Solutions (RCCS), Heriot-Watt University, Edinburgh EH14 4AS, UK.
| | - Andrew M Beale
- Department of Chemistry, UCL, 20 Gordon Street, London, WC1H 0AJ, UK and UK Catalysis Hub, Research Complex at Harwell, Rutherford Appleton Laboratory, Harwell, Oxfordshire OX11 0FA, UK
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5
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Bachvarova-Nedelcheva A, Iordanova R, Kostov K, Gegova R. Sol-gel powder synthesis in the TiO2-TeO2-ZnO system: Structural characterization and properties. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.07.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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6
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Gholinejad M, Rasouli Z, Najera C, Sansano JM. Palladium Nanoparticles on a Creatine-Modified Bentonite Support: An Efficient and Sustainable Catalyst for Nitroarene Reduction. Chempluschem 2020; 84:1122-1129. [PMID: 31943954 DOI: 10.1002/cplu.201900377] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/27/2019] [Indexed: 11/06/2022]
Abstract
Creatine as the nitrogen-rich, green and cheap compound is used for modification of natural bentonite and the resulting material is employed for the stabilization of Palladium nanoparticles having an average diameter of 3 nm. This new material bento-crt@Pd is characterized using different techniques such as X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), solid state UV-vis, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), and energy-dispersive X-ray spectroscopy (EDX). This green catalyst promotes efficient reduction of aromatic nitro compounds in aqueous media. By using this catalyst nitroarenes having electron donating as well as electron withdrawing groups were reduced efficiently to their corresponding amines at room temperature. The catalyst can be recycled seven times and the reused catalyst was characterized by TEM and XPS.
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Affiliation(s)
- Mohammad Gholinejad
- Department of Chemistry, Institute for Advanced, Studies in Basic Sciences (IASBS, P. O. Box 45195-1159, Gavazang, Zanjan, 45137-66731, Iran.,Research Center for Basic Sciences & Modern Technologies (RBST), Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran
| | - Zahra Rasouli
- Department of Chemistry, Institute for Advanced, Studies in Basic Sciences (IASBS, P. O. Box 45195-1159, Gavazang, Zanjan, 45137-66731, Iran
| | - Carmen Najera
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, 03080-Alicante, Spain
| | - José M Sansano
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante, Apdo. 99, 03080-Alicante, Spain
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7
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p-BNMR/TiO2 hybrid materials with exposing the {001} facet for enhanced photocatalytic application in treatment of antibiotic contaminants. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124052] [Citation(s) in RCA: 3] [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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8
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Xiong Z, Lei Z, Li Y, Dong L, Zhao Y, Zhang J. A review on modification of facet-engineered TiO2 for photocatalytic CO2 reduction. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2018. [DOI: 10.1016/j.jphotochemrev.2018.07.002] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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9
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Jamal H, Kang BS, Lee H, Yu JS, Lee CS. Comparative studies of electrochemical performance and characterization of TiO2/graphene nanocomposites as anode materials for Li-secondary batteries. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.03.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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10
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Zhang C, Li X, Zheng S, Ma Y, Hu C, Li C, Duo S, Hu Q. Construction of TiO 2 nanobelts-Bi 2 O 4 heterojunction with enhanced visible light photocatalytic activity. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.03.063] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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11
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Zubair M, Kim H, Razzaq A, Grimes CA, In SI. Solar spectrum photocatalytic conversion of CO2 to CH4 utilizing TiO2 nanotube arrays embedded with graphene quantum dots. J CO2 UTIL 2018. [DOI: 10.1016/j.jcou.2018.04.004] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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12
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Li X, Zheng S, Zhang C, Hu C, Chen F, Sun Y, Duo S, Zhang R, Hu Q, Li W, Kang Y. Synergistic promotion of photocatalytic performance by core@shell structured TiO2/Au@rGO ternary photocatalyst. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.05.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Priyadharsan A, Vasanthakumar V, Karthikeyan S, Raj V, Shanavas S, Anbarasan P. Multi-functional properties of ternary CeO 2 /SnO 2 /rGO nanocomposites: Visible light driven photocatalyst and heavy metal removal. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.05.030] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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14
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Li X, Zhang C, Hu C, Xu L, Hu Q, Duo S, Li W, Kang Y. Synthesis of Bi2O4@TiO2 Heterojunction with Enhanced Visible Light Photocatalytic Activity. J CLUST SCI 2017. [DOI: 10.1007/s10876-017-1238-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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15
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Benvidi A, Nikmanesh M, Dehghan Tezerjani M, Jahanbani S, Abdollahi M, Akbari A, Rezaeipoor-Anari A. A comparative study of various electrochemical sensors for hydrazine detection based on imidazole derivative and different nano-materials of MCM-41, RGO and MWCNTs: Using net analyte signal (NAS) for simultaneous determination of hydrazine and phenol. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.01.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Morawski A, Kusiak-Nejman E, Wanag A, Kapica-Kozar J, Wróbel R, Ohtani B, Aksienionek M, Lipińska L. Photocatalytic degradation of acetic acid in the presence of visible light-active TiO 2 -reduced graphene oxide photocatalysts. Catal Today 2017. [DOI: 10.1016/j.cattod.2016.05.055] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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17
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Asadollahi E, Youzbashi AA, Keyanpour-Rad M. Synthesis and investigation of crystal structure and optical properties of brookite TiO2 nanoparticles capped with (2-chloroquinoline-3-yl) methanol. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.09.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Li X, Chen F, Lian C, Zheng S, Hu Q, Duo S, Li W, Hu C. Au/TiO2/Graphene Composite with Enhanced Photocatalytic Activity Under Both UV and Visible Light Irradiation. J CLUST SCI 2016. [DOI: 10.1007/s10876-016-1049-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Kumar M, Kumara Swamy B. Role of heat on the development of electrochemical sensors on bare and modified Co 3 O 4 /CuO composite nanopowder carbon paste electrodes. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 58:142-52. [DOI: 10.1016/j.msec.2015.08.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 06/30/2015] [Accepted: 08/04/2015] [Indexed: 10/23/2022]
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20
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Anitha VC, Hamnabard N, Banerjee AN, Dillip GR, Joo SW. Enhanced electrochemical performance of morphology-controlled titania-reduced graphene oxide nanostructures fabricated via a combined anodization-hydrothermal process. RSC Adv 2016. [DOI: 10.1039/c5ra23722j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Titania nanotubes is synthesized by an anodization process were used as a basic substrate material to create different morphologies of nanoribbon, nanoflake and nanoparticle structures via an alkali-controlled hydrothermal route.
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Affiliation(s)
- V. C. Anitha
- School of Mechanical Engineering
- Yeungnam University
- Gyeongsan 712-749
- South Korea
| | - Nazanin Hamnabard
- School of Mechanical Engineering
- Yeungnam University
- Gyeongsan 712-749
- South Korea
| | | | - G. R. Dillip
- School of Mechanical Engineering
- Yeungnam University
- Gyeongsan 712-749
- South Korea
| | - Sang Woo Joo
- School of Mechanical Engineering
- Yeungnam University
- Gyeongsan 712-749
- South Korea
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21
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Xiong Z, Luo Y, Zhao Y, Zhang J, Zheng C, Wu JCS. Synthesis, characterization and enhanced photocatalytic CO2 reduction activity of graphene supported TiO2 nanocrystals with coexposed {001} and {101} facets. Phys Chem Chem Phys 2016; 18:13186-95. [DOI: 10.1039/c5cp07854g] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enhanced CO2 photoreduction over graphene supported TiO2 nanocrystals with co-exposed {001} and {101} facets.
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Affiliation(s)
- Zhuo Xiong
- State Key Laboratory of Coal Combustion
- Huazhong University of Science & Technology
- Wuhan 430074
- China
| | - Ying Luo
- State Key Laboratory of Coal Combustion
- Huazhong University of Science & Technology
- Wuhan 430074
- China
| | - Yongchun Zhao
- State Key Laboratory of Coal Combustion
- Huazhong University of Science & Technology
- Wuhan 430074
- China
| | - Junying Zhang
- State Key Laboratory of Coal Combustion
- Huazhong University of Science & Technology
- Wuhan 430074
- China
| | - Chuguang Zheng
- State Key Laboratory of Coal Combustion
- Huazhong University of Science & Technology
- Wuhan 430074
- China
| | - Jeffrey C. S. Wu
- Department of Chemical Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
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22
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Efficient gaseous toluene photoconversion on graphene–titanium dioxide nanocomposites with dominate exposed {0 0 1} facets. J Colloid Interface Sci 2015; 455:134-44. [DOI: 10.1016/j.jcis.2015.05.036] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 05/19/2015] [Accepted: 05/20/2015] [Indexed: 11/19/2022]
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23
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Liu R, Guo W, Sun B, Pang J, Pei M, Zhou G. Composites of rutile TiO2 nanorods loaded on graphene oxide nanosheet with enhanced electrochemical performance. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.01.012] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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24
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Zhu Y, Wang Y, Yao W, Zong R, Zhu Y. New insights into the relationship between photocatalytic activity and TiO2–GR composites. RSC Adv 2015. [DOI: 10.1039/c5ra02458g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Composited graphene cannot enhance the photocatalytic oxidation activity of TiO2, but can improve its photocatalytic reduction activity and photoelectrochemical properties.
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Affiliation(s)
- Yanyan Zhu
- Department of Chemistry
- Beijing Key Laboratory for Analytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Yajun Wang
- State Key Laboratory of Heavy Oil Processing
- China University of Petroleum
- Beijing 102249
- P. R. China
| | - Wenqing Yao
- Department of Chemistry
- Beijing Key Laboratory for Analytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Ruilong Zong
- Department of Chemistry
- Beijing Key Laboratory for Analytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084
- P. R. China
| | - Yongfa Zhu
- Department of Chemistry
- Beijing Key Laboratory for Analytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084
- P. R. China
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25
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Zhang H, Shuang S, Wang G, Guo Y, Tong X, Yang P, Chen A, Dong C, Qin Y. TiO2–graphene hybrid nanostructures by atomic layer deposition with enhanced electrochemical performance for Pb(ii) and Cd(ii) detection. RSC Adv 2015. [DOI: 10.1039/c4ra09779c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Graphene coated with TiO2 by atomic layer deposition exhibits markedly enhanced sensitivity for detection of heavy metal ions.
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Affiliation(s)
- Hongfen Zhang
- School of Pharmaceutical Science
- Shanxi Medical University
- Taiyuan 030001
- China
- Institute of Environmental Science
| | - Shaomin Shuang
- Institute of Environmental Science
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan
- China
| | - Guizhen Wang
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan 030001
- China
| | - Yujing Guo
- Institute of Environmental Science
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan
- China
| | - Xili Tong
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan 030001
- China
| | - Peng Yang
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan 030001
- China
| | - Anjia Chen
- School of Pharmaceutical Science
- Shanxi Medical University
- Taiyuan 030001
- China
| | - Chuan Dong
- Institute of Environmental Science
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan
- China
| | - Yong Qin
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan 030001
- China
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26
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Guerrero S, Martínez-García G, Serafín V, Agüí L, Yáñez-Sedeño P, Pingarrón JM. Electrochemical immunosensor for sensitive determination of the anorexigen peptide YY at grafted reduced graphene oxide electrode platforms. Analyst 2015; 140:7527-33. [DOI: 10.1039/c5an01185j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first electrochemical immunosensor for the determination of the anorexigen peptide YY in human serum is reported.
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Affiliation(s)
- S. Guerrero
- Department of Analytical Chemistry
- Faculty of Chemistry
- University Complutense of Madrid
- 28040-Madrid
- Spain
| | - G. Martínez-García
- Department of Analytical Chemistry
- Faculty of Chemistry
- University Complutense of Madrid
- 28040-Madrid
- Spain
| | - V. Serafín
- Department of Analytical Chemistry
- Faculty of Chemistry
- University Complutense of Madrid
- 28040-Madrid
- Spain
| | - L. Agüí
- Department of Analytical Chemistry
- Faculty of Chemistry
- University Complutense of Madrid
- 28040-Madrid
- Spain
| | - P. Yáñez-Sedeño
- Department of Analytical Chemistry
- Faculty of Chemistry
- University Complutense of Madrid
- 28040-Madrid
- Spain
| | - J. M. Pingarrón
- Department of Analytical Chemistry
- Faculty of Chemistry
- University Complutense of Madrid
- 28040-Madrid
- Spain
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27
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A facile one-step solvothermal synthesis of bismuth phosphate–graphene nanocomposites with enhanced photocatalytic activity. J Colloid Interface Sci 2014; 435:156-63. [DOI: 10.1016/j.jcis.2014.06.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Revised: 06/07/2014] [Accepted: 06/13/2014] [Indexed: 11/19/2022]
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28
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Yu S, Liu B, Wang Q, Gao Y, Shi Y, Feng X, An X, Liu L, Zhang J. Ionic liquid assisted chemical strategy to TiO2 hollow nanocube assemblies with surface-fluorination and nitridation and high energy crystal facet exposure for enhanced photocatalysis. ACS APPLIED MATERIALS & INTERFACES 2014; 6:10283-10295. [PMID: 24881462 DOI: 10.1021/am5016809] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Realization of anionic nonmetal doping and high energy crystal facet exposure in TiO2 photocatalysts has been proven to be an effective approach for significantly improving their photocatalytic performance. A facile strategy of ionic liquid assisted etching chemistry by simply hydrothermally etching hollow TiO2 spheres composed of TiO2 nanoparticles with an ionic liquid of 1-butyl-3-methylimidazolium tetrafluoroborate without any other additives is developed to create highly active anatase TiO2 nanocubes and TiO2 nanocube assemblies. With this one-pot ionic liquid assisted etching process, the surface-fluorination and nitridation and high energy {001} crystal facets exposure can be readily realized simultaneously. Compared with the benchmark materials of P25 and TiO2 nanostructures with other hierarchical architectures of hollow spheres, flaky spheres, and spindles synthesized by hydrothermally etching hollow TiO2 spheres with nonionic liquid of NH4F, the TiO2 nanocubes and TiO2 nanocube assemblies used as efficient photocatalysts show super high photocatalytic activity for degradation of methylene blue, methyl orange, and rhodamine B, due to their surface-fluorination and nitridation and high energy crystal facet exposure. The ionic liquid assisted etching chemistry is facile and robust and may be a general strategy for synthesizing other metal oxides with high energy crystal facets and surface doping for improving photocatalytic activity.
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Affiliation(s)
- Shengli Yu
- College of Chemistry and Chemical Engineering & Inner Mongolia Key Lab of Nanoscience and Nanotechnology, Inner Mongolia University , Hohhot 010021, People's Republic of China
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Yang MQ, Xu YJ. Selective photoredox using graphene-based composite photocatalysts. Phys Chem Chem Phys 2014; 15:19102-18. [PMID: 24121632 DOI: 10.1039/c3cp53325e] [Citation(s) in RCA: 283] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Graphene (GR) has proven to be a promising candidate to construct effective GR-based composite photocatalysts with enhanced catalytic activities for solar energy conversion. During the past few years, various GR-based composite photocatalysts have been developed and applied in a myriad of fields. In this perspective review, compared with the traditional applications of GR-based nanocomposites for the "non-selective" degradation of pollutants, photo-deactivation of bacteria and water splitting to H2 and O2, we mainly focus on the recent progress in the applications of GR-based composite photocatalysts for "selective" organic transformations, including reduction of CO2 to renewable fuels, reduction of nitroaromatic compounds to amino compounds, oxidation of alcohols to aldehydes and acids, epoxidation of alkenes, hydroxylation of phenol, and oxidation of tertiary amines. The different roles of GR in these GR-based nanocomposite photocatalysts such as providing a photoelectron reservoir and performing as an organic dye-like macromolecular photosensitizer have been summarized. In addition, graphene oxide (GO) as a co-catalyst in GO-organic species photocatalysts and GO itself as a photocatalyst for selective reduction of CO2 have also been demonstrated. Finally, perspectives on the future research direction of GR-based composite photocatalysts toward selective organic redox transformations are discussed and it is clear that there is a wide scope of opportunities awaiting us in this promising research field.
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Affiliation(s)
- Min-Quan Yang
- State Key Laboratory Breeding Base of Photocatalysis, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, 350002, P. R. China.
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Ong WJ, Tan LL, Chai SP, Yong ST, Mohamed AR. Facet-dependent photocatalytic properties of TiO(2) -based composites for energy conversion and environmental remediation. CHEMSUSCHEM 2014; 7:690-719. [PMID: 24532412 DOI: 10.1002/cssc.201300924] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Indexed: 05/10/2023]
Abstract
Titanium dioxide (TiO2 ) is one of the most widely investigated metal oxides because of its extraordinary surface, electronic, and photocatalytic properties. However, the large band gap of TiO2 and the considerable recombination of photogenerated electron-hole pairs limit its photocatalytic efficiency. Therefore, research attention is being increasingly directed towards engineering the surface structure of TiO2 on the atomic level (namely morphological control of {001} facets on the micro- and nanoscale) to fine-tune its physicochemical properties; this could ultimately lead to the optimization of selectivity and reactivity. This Review encompasses the fundamental principles to enhance the photocatalytic activity by using highly reactive {001}-faceted TiO2 -based composites. The current progress of such composites, with particular emphasis on the photodegradation of pollutants and photocatalytic water splitting for hydrogen generation, is also discussed. The progresses made are thoroughly examined for achieving remarkable photocatalytic performances, with additional insights with regard to charge transfer. Finally, a summary and some perspectives on the challenges and new research directions for future exploitation in this emerging frontier are provided, which hopefully would allow for harnessing the outstanding structural and electronic properties of {001} facets for various energy- and environmental-related applications.
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Affiliation(s)
- Wee-Jun Ong
- Low Carbon Economy (LCE) Group, Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 46150, Selangor (Malaysia), Fax: (+603) 55146234
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Han X, Zhang L, Li C. Preparation of polydopamine-functionalized graphene–Fe3O4 magnetic composites with high adsorption capacities. RSC Adv 2014. [DOI: 10.1039/c4ra04182h] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Polydopamine-functionalized graphene–Fe3O4 (DGF) nanocomposites have been prepared by a simple solution mixing method. The obtained DGF has high adsorption capacity of 365.39 mg g−1 and easy separation ability.
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Affiliation(s)
- Xiaofang Han
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237, China
| | - Ling Zhang
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237, China
| | - Chunzhong Li
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237, China
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Umrao S, Abraham S, Theil F, Pandey S, Ciobota V, Shukla PK, Rupp CJ, Chakraborty S, Ahuja R, Popp J, Dietzek B, Srivastava A. A possible mechanism for the emergence of an additional band gap due to a Ti–O–C bond in the TiO2–graphene hybrid system for enhanced photodegradation of methylene blue under visible light. RSC Adv 2014. [DOI: 10.1039/c4ra10572a] [Citation(s) in RCA: 123] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Efficient visible light photodegradation of methylene blue using TiO2–graphene based composites has been reported.
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Affiliation(s)
- Sima Umrao
- Department of Physics
- Banaras Hindu University
- Varanasi, India
| | - Shiju Abraham
- Department of Physics
- Banaras Hindu University
- Varanasi, India
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich-Schiller-University
| | - Frank Theil
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich-Schiller-University
- Jena, Germany
- Leibniz-Institute of Photonic Technology Jena (IPHT)
- Jena, Germany
| | - Shobhit Pandey
- Department of Metallurgical Engineering
- Indian Institute of Technology-B. H. U
- Varanasi, India
| | - Valerian Ciobota
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich-Schiller-University
- Jena, Germany
| | | | - Caroline J. Rupp
- Departamento de Física
- Universidade Federal de Santa Maria
- Santa Maria, Brazil
| | - Sudip Chakraborty
- Condensed Matter Theory Group
- Department of Physics and Astronomy
- Uppsala University
- , Sweden
| | - Rajeev Ahuja
- Condensed Matter Theory Group
- Department of Physics and Astronomy
- Uppsala University
- , Sweden
| | - Jürgen Popp
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich-Schiller-University
- Jena, Germany
- Leibniz-Institute of Photonic Technology Jena (IPHT)
- Jena, Germany
| | - Benjamin Dietzek
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich-Schiller-University
- Jena, Germany
- Leibniz-Institute of Photonic Technology Jena (IPHT)
- Jena, Germany
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