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Ali HM, Arabpour Roghabadi F, Ahmadi V, Amjadi A, Ghaedi I. Wastewater Treatment Using High-Performance In Situ Formed Double-Heterojunction Janus Photocatalyst Microparticles Shaped via a Microfluidic Device. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:13968-13983. [PMID: 38937255 DOI: 10.1021/acs.langmuir.4c01163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
In this work, a heterogeneous photocatalysis system is fabricated for treating wastewater containing organic dyes and pharmaceutical substances. Double-heterojunction Janus photocatalysts are formed on the surface of size-tunable polydimethylsiloxane (PDMS) microparticles shaped via simple and low-cost coflow microfluidic devices. Ag0/Ag0-TiO2/TiO2 Janus-like photocatalysts are synthesized on the surface of porous PDMS microparticles as the support in which the metal-semiconductor heterojunction of Ag0/Ag0-TiO2 and the second heterojunction of Ag0-TiO2/TiO2 are created in situ, leading to the formation of Ag0/Ag0-TiO2/TiO2@PDMS photocatalysis systems. To form the heterojunctions on the PDMS surface, the polymer chain etching method is employed as a desired strategy to have half of the TiO2 nanoparticles on the surface of microparticles, which are treated by a Ag source. Using salt additives and the etching method, PDMS microparticles are made porous, providing more surface area for photoreactions. Surprisingly, the highest decomposition efficiencies of 94.4 and 91.1% are achieved for rhodamine B(RhB) and tetracycline (TC), respectively, under visible light for 60 min pH 11, a light source at a distance of 2 cm, 5 mM AgNO3, 10 wt % TiO2, 7 wt % NaCl, and 20 gm/L photocatalyst, which are conditions that result in the best performance for RhB degradation. Regarding the stability of the photocatalysts, no significant change is observed in the performance after five cycles.
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Affiliation(s)
- Hassanin M Ali
- Department of Process Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran 14115-114, Iran
- Chemical Engineering Department, College of Engineering, University of Babylon, Babil, Hillah51002, Iraq
| | - Farzaneh Arabpour Roghabadi
- Department of Process Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran 14115-114, Iran
| | - Vahid Ahmadi
- Faculty of Electrical and Computer Engineering, Tarbiat Modares University, Tehran 14115-194, Iran
| | - Ahdieh Amjadi
- Department of Chemical Engineering, Faculty of Engineering, University of Maragheh, Maragheh 83111-55181, Iran
| | - Iraj Ghaedi
- Department of Process Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran 14115-114, Iran
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Petcu G, Anghel EM, Atkinson I, Culita DC, Apostol NG, Kuncser A, Papa F, Baran A, Blin JL, Parvulescu V. Composite Photocatalysts with Fe, Co, and Ni Oxides on Supports with Tetracoordinated Ti Embedded into Aluminosilicate Gel during Zeolite Y Synthesis. Gels 2024; 10:129. [PMID: 38391459 PMCID: PMC10888282 DOI: 10.3390/gels10020129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/02/2024] [Accepted: 02/03/2024] [Indexed: 02/24/2024] Open
Abstract
Ti-aluminosilicate gels were used as supports for the immobilization of Fe, Co, and Ni oxides (5%) by impregnation and synthesis of efficient photocatalysts for the degradation of β-lactam antibiotics from water. Titanium oxide (1 and 2%) was incorporated into the zeolite network by modifying the gel during the zeolitization process. The formation of the zeolite Y structure and its microporous structure were evidenced by X-ray diffraction and N2 physisorption. The structure, composition, reduction, and optical properties were studied by X-ray diffraction, H2-TPR, XPS, Raman, photoluminescence, and UV-Vis spectroscopy. The obtained results indicated a zeolite Y structure for all photocatalysts with tetracoordinated Ti4+ sites. The second transitional metals supported by the post-synthesis method were obtained in various forms, such as oxides and/or in the metallic state. A red shift of the absorption edge was observed in the UV-Vis spectra of photocatalysts upon the addition of Fe, Co, or Ni species. The photocatalytic performances were evaluated for the degradation of cefuroxime in water under visible light irradiation. The best results were obtained for iron-immobilized photocatalysts. Scavenger experiments explained the photocatalytic results and their mechanisms. A different contribution of the active species to the photocatalytic reactions was evidenced.
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Affiliation(s)
- Gabriela Petcu
- Institute of Physical Chemistry "Ilie Murgulescu" of the Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest, Romania
| | - Elena Maria Anghel
- Institute of Physical Chemistry "Ilie Murgulescu" of the Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest, Romania
| | - Irina Atkinson
- Institute of Physical Chemistry "Ilie Murgulescu" of the Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest, Romania
| | - Daniela C Culita
- Institute of Physical Chemistry "Ilie Murgulescu" of the Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest, Romania
| | - Nicoleta G Apostol
- National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
| | - Andrei Kuncser
- National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania
| | - Florica Papa
- Institute of Physical Chemistry "Ilie Murgulescu" of the Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest, Romania
| | - Adriana Baran
- Institute of Physical Chemistry "Ilie Murgulescu" of the Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest, Romania
| | - Jean-Luc Blin
- Faculty of Sciences and Technology, University of Lorraine, CNRS, L2CM, F-54000 Nancy, France
| | - Viorica Parvulescu
- Institute of Physical Chemistry "Ilie Murgulescu" of the Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest, Romania
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Kumar A, Bhasin M, Chitkara M. Morphological analysis and grain size distribution of SnO 2 nanoparticles via digital image processing across diverse calcination temperatures. J Microsc 2023; 292:123-134. [PMID: 37888747 DOI: 10.1111/jmi.13241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 10/20/2023] [Accepted: 10/24/2023] [Indexed: 10/28/2023]
Abstract
This study presents a comprehensive image analysis of the SnO2 nanoparticles synthesised through calcination at diverse temperatures, which enables an estimation of grain size distribution (GSD) from field-emission scanning electron microscopy (FE-SEM) images. Even though FE-SEM images could provide us with a lot of information about sample differences, we can learn more and perform a more accurate analysis of them by using quantitative data obtained by our image processing application. The digital image processing techniques used in this research provide a detailed analysis of the nanoparticles' size and shape, enabling a deeper understanding of their unique characteristics. The results reveal the significant impact of calcination temperature on the morphology of the nanoparticles, with changes in grain size and grain size distribution observed at varying temperatures.
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Affiliation(s)
- Aashish Kumar
- Nanomaterials Research Laboratory, Chitkara University, Punjab, India
- Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, India
| | - Manan Bhasin
- Nanomaterials Research Laboratory, Chitkara University, Punjab, India
- Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, India
| | - Mansi Chitkara
- Nanomaterials Research Laboratory, Chitkara University, Punjab, India
- Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, India
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Cheepborisutikul SJ, Ogawa M. Controlled Phase Transformation and Crystal Growth of Titanium Dioxide from Anatase/Silica Core/Shell Particles. Inorg Chem 2023. [PMID: 37463236 DOI: 10.1021/acs.inorgchem.3c01904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Anatase/silica core/shell particles were prepared by the hydrolysis and condensation of tetraethyl orthosilicate on anatase particles with the sizes of 9, 22, and 111 nm, respectively. The thickness of the silica layer was designed from ca. 3 to 14 nm by repeating the coating procedure on anatase with a particle size of 22 nm. By the heat treatment at 1000 °C, though the pristine anatase particles transformed to rutile, anatase remained for the silica-coated particles. Anatase particles (111 nm) transformed to rutile upon heating at 1100 °C, while the transformation was not observed for the smaller particles (9 and 22 nm). With the increase of the silica thickness to 14 nm, anatase did not transform to rutile even after heating at 1150 °C, while resulting in varied compositions of anatase and rutile after heating at 1200 °C. The crystal growth of anatase and rutile was also suppressed for the silica-coated particles compared with that seen for pristine anatase. Thus, the thermal transformation and crystal growth of titania were controlled by the coating with silica, and the effects were shown to affect the coating.
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Affiliation(s)
- Siraphat Jan Cheepborisutikul
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand
| | - Makoto Ogawa
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand
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Yadav G, Ahmaruzzaman M. New generation advanced nanomaterials for photocatalytic abatement of phenolic compounds. CHEMOSPHERE 2022; 304:135297. [PMID: 35709838 DOI: 10.1016/j.chemosphere.2022.135297] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 06/07/2022] [Accepted: 06/08/2022] [Indexed: 06/15/2023]
Abstract
Nowadays, organic pollutants create severe problems worldwide. Phenolic compounds are the harmful pollutants that are developed from industrial effluents, thus causing several environmental problems. Low-cost materials show good potential capabilities for removal of phenolic compounds but are not so effective, so modification is required. New generation nanocatalysts are thought to be excellent for phenol removal. Removal of phenolic pollutants by photodegradation may lead to the decrement of these problematic groups. In this review, (i) a new generation of catalysts for the removal of phenolic compounds is discussed, (ii) nanocatalysts for photodegradation processes, and (iii) the mechanisms involved in photodegradation processes are also discussed. It is noticeable from the analysis that new generation catalysts for photodegradation processes have been demonstrated for high removal abilities of irrefutable phenolic compounds. Finally, future perspectives are also given in this article for the further development of next-generation catalysts.
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Affiliation(s)
- Gaurav Yadav
- Department of Chemistry, National Institute of Technology Silchar, 788010, Assam, India
| | - Md Ahmaruzzaman
- Department of Chemistry, National Institute of Technology Silchar, 788010, Assam, India.
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Brandão LMDS, Barbosa MDS, de Jesus RA, Bharad PA, Lima ÁS, Soares CMF, Yerga RMN, Bilal M, Ferreira LFR, Iqbal HM, Gopinath CS, Figueiredo RT. Enhanced hydrogen fuel production using synergistic combination of solar radiation and TiO2 photocatalyst coupled with Burkholderia cepacia lipase. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 2022. [DOI: 10.1016/j.ijhydene.2022.02.220] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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7
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Mannaa MA, Qasim KF, Alshorifi FT, El-Bahy SM, Salama RS. Role of NiO Nanoparticles in Enhancing Structure Properties of TiO 2 and Its Applications in Photodegradation and Hydrogen Evolution. ACS OMEGA 2021; 6:30386-30400. [PMID: 34805670 PMCID: PMC8600530 DOI: 10.1021/acsomega.1c03693] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 10/22/2021] [Indexed: 06/01/2023]
Abstract
Pure and modified mesoporous TiO2 nanoparticles with different loadings of NiO (3-20.0 wt %) were prepared through the surfactant-assisted sol-gel approach with the use of cetyltrimethylammonium bromide as a template. The optical and structural properties of different samples were examined using N2 adsorption-desorption analysis, energy-dispersive spectroscopy, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, UV-vis spectroscopy, Fourier transform infrared spectroscopy, and photoluminescence (PL) spectroscopy. X-ray diffraction results confirmed the insertion of Ni2+ into the lattice of TiO2, and the crystallite size reduced remarkably after the addition of NiO. The diffuse reflectance spectroscopy spectra displayed obvious red shift in the absorption edges, and new absorption bands appeared in the visible region when NiO was added, which indicates the formation of surface defects and oxygen vacancies. The optical band gap of TiO2 reduced sharply when the contents of NiO were increased. The increase in the surface defects as well as oxygen vacancies were examined using PL spectroscopy. The photocatalytic performance of the as-synthesized samples was investigated over photodegradation of brilliant green (BG) and phenol and hydrogen generation under visible light. 10% NiO/TiO2 exhibited the highest photocatalytic efficiency. The photocatalytic activity was improved due to the creation of a p-n junction at the interface of NiO/TiO2, which efficiently promotes the separation of photogenerated electron/hole pairs and consequently enhances its photodegradation activity. According to the photocatalytic activity results, NiO contents were considered one of the most important factors affecting the photodegradation of BG and phenol and H2 evolution. Also, we discussed the mechanism of photodegradation, mineralization (total organic carbon), and photocatalytic reaction kinetics of BG and phenol.
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Affiliation(s)
- Mohammed A. Mannaa
- Chemistry
Department, Faculty of Applied Science, Sa’ada University, Sana 31220, Yemen
| | - Khaled F. Qasim
- Chemistry
Department, Faculty of Science, Suez University, Ismailia 41511, Egypt
| | - Fares T. Alshorifi
- Department
of Chemistry, Faculty of Science, Sheba
Region University, Sana 31220, Yemen
- Department
of Chemistry, Faculty of Science, Sana’a
University, Sana 31220, Yemen
| | - Salah M. El-Bahy
- Department
of Chemistry, Turabah University College, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Reda S. Salama
- Basic
Science
Department, Faculty of Engineering, Delta
University for Science and Technology, Gamasa 11152, Egypt
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Navarro-Gázquez PJ, Muñoz-Portero MJ, Blasco-Tamarit E, Sánchez-Tovar R, Fernández-Domene RM, García-Antón J. Original Approach to Synthesize TiO 2/ZnO Hybrid Nanosponges Used as Photoanodes for Photoelectrochemical Applications. MATERIALS (BASEL, SWITZERLAND) 2021; 14:6441. [PMID: 34771967 PMCID: PMC8585194 DOI: 10.3390/ma14216441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 10/16/2021] [Accepted: 10/24/2021] [Indexed: 12/24/2022]
Abstract
In the present work, TiO2/ZnO hybrid nanosponges have been synthesized for the first time. First, TiO2 nanosponges were obtained by anodization under hydrodynamic conditions in a glycerol/water/NH4F electrolyte. Next, in order to achieve the anatase phase of TiO2 and improve its photocatalytic behaviour, the samples were annealed at 450 °C for 1 h. Once the TiO2 nanosponges were synthesized, TiO2/ZnO hybrid nanosponges were obtained by electrodeposition of ZnO on TiO2 nanosponges using different temperatures, times, and concentrations of zinc nitrate (Zn(NO3)2). TiO2/ZnO hybrid nanosponges were used as photoanodes in photoelectrochemical water splitting tests. The results indicate that the photoelectrochemical response improves, in the studied range, by increasing the temperature and the Zn(NO3)2 concentration during the electrodeposition process, obtaining an increase in the photoelectrochemical response of 141% for the TiO2/ZnO hybrid nanosponges electrodeposited at 75 °C with 10 mM Zn(NO3)2 for 15 min. Furthermore, morphological, chemical, and structural characterization was performed by Field Emission Scanning Electron Microscopy (FE-SEM) with Energy Dispersive X-Ray spectroscopy (EDX), Raman Confocal Laser Spectroscopy, X-Ray Photoelectron Spectroscopy (XPS), and Grazing Incidence X-Ray Diffraction (GIXRD).
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Affiliation(s)
- Pedro José Navarro-Gázquez
- Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain; (P.J.N.-G.); (M.J.M.-P.); (E.B.-T.)
| | - Maria José Muñoz-Portero
- Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain; (P.J.N.-G.); (M.J.M.-P.); (E.B.-T.)
| | - Encarna Blasco-Tamarit
- Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain; (P.J.N.-G.); (M.J.M.-P.); (E.B.-T.)
| | - Rita Sánchez-Tovar
- Departamento de Ingeniería Química, Universitat de Valencia, Av. de las Universitats, s/n, 46100 Burjassot, Spain; (R.S.-T.); (R.M.F.-D.)
| | - Ramon Manuel Fernández-Domene
- Departamento de Ingeniería Química, Universitat de Valencia, Av. de las Universitats, s/n, 46100 Burjassot, Spain; (R.S.-T.); (R.M.F.-D.)
| | - Jose García-Antón
- Instituto Universitario de Seguridad Industrial, Radiofísica y Medioambiental (ISIRYM), Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain; (P.J.N.-G.); (M.J.M.-P.); (E.B.-T.)
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Tran VV, Nu TTV, Jung HR, Chang M. Advanced Photocatalysts Based on Conducting Polymer/Metal Oxide Composites for Environmental Applications. Polymers (Basel) 2021; 13:3031. [PMID: 34577932 PMCID: PMC8470106 DOI: 10.3390/polym13183031] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/05/2021] [Accepted: 09/05/2021] [Indexed: 01/12/2023] Open
Abstract
Photocatalysts provide a sustainable method of treating organic pollutants in wastewater and converting greenhouse gases. Many studies have been published on this topic in recent years, which signifies the great interest and attention that this topic inspires in the community, as well as in scientists. Composite photocatalysts based on conducting polymers and metal oxides have emerged as novel and promising photoactive materials. It has been demonstrated that conducting polymers can substantially improve the photocatalytic efficiency of metal oxides owing to their superior photocatalytic activities, high conductivities, and unique electrochemical and optical properties. Consequently, conducting polymer/metal oxide composites exhibit a high photoresponse and possess a higher surface area allowing for visible light absorption, low recombination of charge carriers, and high photocatalytic performance. Herein, we provide an overview of recent advances in the development of conducting polymer/metal oxide composite photocatalysts for organic pollutant degradation and CO2 conversion through photocatalytic processes.
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Affiliation(s)
- Vinh Van Tran
- Alan G. MacDiarmid Energy Research Institute, Chonnam National University, Gwangju 61186, Korea;
| | - Truong Thi Vu Nu
- Advanced Institute of Science and Technology, University of Danang, Danang 50000, Vietnam;
| | - Hong-Ryun Jung
- Industry-University Cooperation Foundation, Chonnam National University, Gwangju 61186, Korea
| | - Mincheol Chang
- Alan G. MacDiarmid Energy Research Institute, Chonnam National University, Gwangju 61186, Korea;
- Department of Polymer Engineering, Graduate School, Chonnam National University, Gwangju 61186, Korea
- School of Polymer Science and Engineering, Chonnam National University, Gwangju 61186, Korea
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Di Liberto G, Pacchioni G. Band offset in semiconductor heterojunctions. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:415002. [PMID: 34284370 DOI: 10.1088/1361-648x/ac1620] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 07/20/2021] [Indexed: 06/13/2023]
Abstract
Semiconductor heterojunctions are widely applied in solid-state device applications, including semiconductor lasers, solar cells, and transistors. In photocatalysis they are of interest due to their capability to hinder charge carriers' recombination. A key role in the performance of heterojunctions is that of the alignment of the band edges of the two units composing the junction. In this work, we compare the performances of three widely applied approaches for the simulation of semiconductors heterostructures, based on density functional theory calculations with hybrid functionals. We benchmark the band offsets of ten semiconductors heterostructures for which experimental values are available: AlP/GaP, AlP/Si, AlAs/GaAs, AlAs/Ge, GaAs/Ge, GaP/Si, ZnSe/Ge, ZnSe/AlAs, ZnSe/GaAs, and TiO2/SrTiO3. The methods considered are (i) the alternating slabs junction (ASJ), (ii) the surface terminated junction (STJ), and (iii) the independent units (IU) approach. Moreover, two different ways to determine a common reference have been considered, (i) the plane averaged electrostatic potential, and (ii) the energy of the core levels. Advantages, drawbacks and overall performances of each method are discussed. The results suggest that the accuracy in the estimation of the band offsets is ∼0.2 eV when the ASJ method is applied. The STJ approach provides a similar accuracy, while the neglection of any interface effect, as in the IU method, provides only a qualitative estimate of the band offset and can result in significant deviations from the experiment.
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Affiliation(s)
- Giovanni Di Liberto
- Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi 55, 20125 Milano, Italy
| | - Gianfranco Pacchioni
- Dipartimento di Scienza dei Materiali, Università di Milano-Bicocca, via R. Cozzi 55, 20125 Milano, Italy
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Enhanced photocatalytic activity of bismuth oxychloride by in-situ introducing oxygen vacancy. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126705] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Ma R, Sun J, Li DH, Wei JJ. Exponentially self-promoted hydrogen evolution by uni-source photo-thermal synergism in concentrating photocatalysis on co-catalyst-free P25 TiO2. J Catal 2020. [DOI: 10.1016/j.jcat.2020.10.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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13
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Suzuki H, Awa K, Naya SI, Tada H. Heat treatment effect of a hybrid consisting of SnO2 nanorod and rutile TiO2 with heteroepitaxial junction on the photocatalytic activity. CATAL COMMUN 2020. [DOI: 10.1016/j.catcom.2020.106148] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Zou X, Yang Y, Chen H, Shi XL, Suo G, Ye X, Zhang L, Hou X, Feng L, Chen ZG. Tuning wall thickness of TiO 2 microtubes for an enhanced photocatalytic activity with thickness-dependent charge separation efficiency. J Colloid Interface Sci 2020; 579:463-469. [PMID: 32622095 DOI: 10.1016/j.jcis.2020.06.081] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 06/18/2020] [Accepted: 06/19/2020] [Indexed: 11/29/2022]
Abstract
TiO2 microtubes with tunable wall thickness have been synthesized by a one-step electrospinning method linked with a calcination process. The wall thickness of TiO2 microtubes can be easily tuned by altering the dosage of liquid paraffin. The influence of the thickness on the light-harvesting ability and separation efficiency of the photogenerated carriers was studied using ultraviolet-visible (UV-vis) diffuse reflectance spectroscopy, photoluminescence emission spectroscopy, and photocurrent density measurements. Results show that TiO2 microtubes with an appropriate thickness exhibit enhanced light scattering effect, UV-vis light-harvesting ability, charge separation efficiency, and photocatalytic performance. The degradation rates of rhodamine B and 2,4-dinitrophenol by using TiO2 microtubes synthesized at a dosage of 0.14 g/mL liquid paraffin are 99.9% within 60 min and 97.8% within 40 min, respectively, which are higher than most of the reported values. All these results suggest that our work provides an ideal strategy for adjusting the wall thickness of TiO2 microtubes and new approach to enhance the photocatalytic performance of TiO2.
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Affiliation(s)
- Xinxin Zou
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Yanling Yang
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, PR China.
| | - Huajun Chen
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, PR China; Department of Environment and Chemistry, Luoyang Institute of Science and Technology, Luoyang 471023, PR China
| | - Xiao-Lei Shi
- Centre for Future Materials, University of Southern Queensland, Springfield Central, QLD 4300, Australia; School of Mechanical and Mining Engineering, The University of Queensland, QLD 4072, Australia
| | - Guoquan Suo
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Xiaohui Ye
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Li Zhang
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Xiaojiang Hou
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Lei Feng
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Zhi-Gang Chen
- Centre for Future Materials, University of Southern Queensland, Springfield Central, QLD 4300, Australia; School of Mechanical and Mining Engineering, The University of Queensland, QLD 4072, Australia.
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Chen H, Xue C, Cui D, Liu M, Chen Y, Li Y, Zhang W. Co 3O 4-Ag photocatalysts for the efficient degradation of methyl orange. RSC Adv 2020; 10:15245-15251. [PMID: 35495451 PMCID: PMC9052209 DOI: 10.1039/c9ra10437b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 03/30/2020] [Indexed: 11/29/2022] Open
Abstract
In this paper, a series of Co3O4-Ag photocatalysts with different Ag loadings were synthesized by facile hydrothermal and in situ photoreduction methods and fully characterized by XRD, SEM, TEM, FTIR spectroscopy, XPS, UV-vis and PL techniques. The catalysts were used for the degradation of methyl orange (MO). Compared with the pure Co3O4 catalyst, the Co3O4-Ag catalysts showed better activity; among these, the Co3O4-Ag-0.3 catalyst demonstrated the most efficient activity with 96.4% degradation efficiency after 30 h UV light irradiation and high degradation efficiency of 99.1% after 6 h visible light irradiation. According to the corresponding dynamics study under UV light irradiation, the photocatalytic efficiency of Co3O4-Ag-0.3 was 2.72 times higher than that of Co3O4 under identical reaction conditions. The excellent photocatalytic activity of Co3O4-Ag can be attributed to the synergistic effect of strong absorption under UV and visible light, reduced photoelectron and hole recombination rate, and decreased band gap due to Ag doping. Additionally, a possible reaction mechanism over the Co3O4-Ag photocatalysts was proposed and explained.
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Affiliation(s)
- Hongmei Chen
- Science and Technology on Electronic Test and Measurement Laboratory, North University of China Taiyuan Shanxi 030051 China
| | - Chenyang Xue
- Science and Technology on Electronic Test and Measurement Laboratory, North University of China Taiyuan Shanxi 030051 China
| | - Danfeng Cui
- Science and Technology on Electronic Test and Measurement Laboratory, North University of China Taiyuan Shanxi 030051 China
| | - Maoxing Liu
- Department of Mathematics, Qingdao University of Science and Technology Qingdao 266061 China
| | - Yi Chen
- Science and Technology on Electronic Test and Measurement Laboratory, North University of China Taiyuan Shanxi 030051 China
| | - Yuankai Li
- Science and Technology on Electronic Test and Measurement Laboratory, North University of China Taiyuan Shanxi 030051 China
| | - Wendong Zhang
- Science and Technology on Electronic Test and Measurement Laboratory, North University of China Taiyuan Shanxi 030051 China
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16
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Xu K, Liu Z, Qi S, Yin Z, Deng S, Zhang M, Sun Z. Construction of Ag-modified TiO2/ZnO heterojunction nanotree arrays with superior photocatalytic and photoelectrochemical properties. RSC Adv 2020; 10:34702-34711. [PMID: 35514379 PMCID: PMC9056850 DOI: 10.1039/d0ra06596j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 09/10/2020] [Indexed: 11/21/2022] Open
Abstract
The work involves the preparation of TiO2/ZnO heterojunction nanotree arrays by a three-step: hydrothermal, sol–gel, and secondary hydrothermal method, and then modification of Ag quantum dots (QDs).
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Affiliation(s)
- Kang Xu
- School of Physics & Materials Science
- Anhui University
- Hefei 230601
- PR China
| | - Zhu Liu
- School of Physics & Materials Science
- Anhui University
- Hefei 230601
- PR China
| | - Shihan Qi
- School of Physics & Materials Science
- Anhui University
- Hefei 230601
- PR China
| | - Zhuangzhuang Yin
- School of Physics & Materials Science
- Anhui University
- Hefei 230601
- PR China
| | - Shangkun Deng
- School of Physics & Materials Science
- Anhui University
- Hefei 230601
- PR China
| | - Miao Zhang
- School of Physics & Materials Science
- Anhui University
- Hefei 230601
- PR China
| | - Zhaoqi Sun
- School of Physics & Materials Science
- Anhui University
- Hefei 230601
- PR China
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17
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Engineering an ultrathin amorphous TiO2 layer for boosting the weatherability of TiO2 pigment with high lightening power. Chin J Chem Eng 2019. [DOI: 10.1016/j.cjche.2019.04.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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18
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Piskorz W, Zasada F, Wójtowicz G, Morawski A, Macyk W, Sojka Z. Attaching titania clusters of various size to reduced graphene oxide and its impact on the conceivable photocatalytic behavior of the junctions-a DFT/D + U and TD DFTB modeling. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2019; 31:404001. [PMID: 31226702 DOI: 10.1088/1361-648x/ab2bc8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
DFT/D + U and density functional based tight binding (DFTB) molecular modeling was used to investigate the role of the structural, electronic and optical properties of reduced graphene oxide surface (r-GO), hybridized with hydrated TiO2 moieties of various size, ranging from small molecular Ti2O4 clusters into extended Ti43O86 rutile type nanocrystals of ~5 nm diameter. The calculated adhesion energies, varying from -5.048 eV (r-GO|Ti2O4), -12.159 eV (r-GO|Ti5O10), -18.499 eV (r-GO|Ti15O30) to -42.484 eV (r-GO|Ti43O86), indicate high stability of these composites. It was shown that electronic interactions at the r-GO|(1 1 0)TiO2 interface give rise to net charge flow from the r-GO substrate towards the TiO2 moieties, analyzed in terms of the partial charge density 3D plots and an interfacial dipole moment formation. The DOS structure of the composites was calculated by means of the time dependent DFTB approach, and the position and composition of the VB and CB edges, along with the presence of weak mid-gap 2p C states originating from the intact graphene-like patches in the r-GO substrate were discussed in detail in the context of conceivable photocatalytic activity of the composites. The constructed band alignment diagram implies formation of the staggered type II scheme, with the electric field offset that is sensitive to the titania cluster size. In the case of the nano-reticular TiO2, where only a fraction of the Ti atoms is engaged in the Ti-O-C linkers formation, recombination of the photogenerated charges is inhibited owing to favorable spatial separation effect. For small molecular TiO2 clusters with all Ti cations anchored to the r-GO layer fast cross-relaxation quenches the beneficial interfacial charge separation effect, since the strong hybridization of the oxygen and carbon states provides a convenient pathway for the efficient electronic coupling between the CB edge states of r-GO and the VB edge states of the TiO2 moieties. A phenomenological model of the molecular r-GO|Ti2O4 and the reticular r-GO|Ti43O86 composites was constructed in account for different photocatalytic behavior of both junctions.
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Affiliation(s)
- Witold Piskorz
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, 30-387 Kraków, Poland
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Hassan SM, Ahmed AI, Mannaa MA. Preparation and characterization of SnO2 doped TiO2 nanoparticles: Effect of phase changes on the photocatalytic and catalytic activity. JOURNAL OF SCIENCE: ADVANCED MATERIALS AND DEVICES 2019; 4:400-412. [DOI: 10.1016/j.jsamd.2019.06.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
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20
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Hassan SM, Ahmed AI, Mannaa MA. Surface acidity, catalytic and photocatalytic activities of new type H3PW12O40/Sn-TiO2 nanoparticles. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.05.070] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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21
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Yu Y, Ma K, Zhuang R, Wu K, Liao Q, Zhong S, Yue H, Liu C, Tang S, Liang B. Hydroxyl-Mediated Formation of Highly Dispersed SnO2/TiO2 Heterojunction via Pulsed Chemical Vapor Deposition To Enhance Photocatalytic Activity. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02360] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yangyang Yu
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Kui Ma
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Rui Zhuang
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Kejing Wu
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610207, PR China
| | - Qingdian Liao
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Shan Zhong
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Hairong Yue
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610207, PR China
| | - Changjun Liu
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610207, PR China
| | - Siyang Tang
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
| | - Bin Liang
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, PR China
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610207, PR China
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22
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Obregón S, Amor G, Vázquez A. Electrophoretic deposition of photocatalytic materials. Adv Colloid Interface Sci 2019; 269:236-255. [PMID: 31096076 DOI: 10.1016/j.cis.2019.05.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 05/01/2019] [Accepted: 05/02/2019] [Indexed: 10/26/2022]
Abstract
Powdered photocatalytic materials have been successfully applied for the degradation of organic and inorganic pollutants as well as for hydrogen production and CO2 photo-reduction. However, the development of strategies for the preparation of photoactive coatings is a hot topic since it is a promising step for its use in photocatalytic reactors on an industrial scale. Electrophoretic deposition is a versatile technique capable to produce coatings of nanoparticles at a relative low cost and with an excellent quality and control of the deposited material. This work summarizes the fundamental aspects of the electrophoretic deposition process, as well as the latest contributions in the deposition of several photocatalytic materials including TiO2 and other UV-photocatalysts like ZnO, ZnS, SrTiO3 and PbMoO4 in addition to visible-light-driven photocatalysts such as Bi2O3, CdS, CdSe, g-C3N4, among others. Furthermore, the morphological features of the coatings along with the repercussion in the photocatalytic performance are issues discussed in the present review, based on the effect of the multiple parameters of the electrophoretic process such as the applied voltage, the deposition time, the inter-electrode distance, the concentration of the particles, the solvents and additives.
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23
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Anwer H, Park JW. Analogous crystal orientation for immobilizing rGO/ZrO 2/Ag 3PO 4 nanocomposite on a fluorine-doped tin oxide substrate. JOURNAL OF HAZARDOUS MATERIALS 2019; 369:375-383. [PMID: 30784967 DOI: 10.1016/j.jhazmat.2019.02.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/29/2019] [Accepted: 02/06/2019] [Indexed: 06/09/2023]
Abstract
Immobilization of nanocomposites without compromising their photocatalytic performance is a challenging task. Here, we report a new method that utilizes analogous crystal orientations and similarities in interplanar spacings for photocatalyst immobilization. The photocatalyst rGO/ZrO2/Ag3PO4 was synthesized using a green hydrothermal method. A primary layer of ZrO2 and a secondary layer of rGO/ZrO2/Ag3PO4 composite were deposited on a fluorine-doped tin oxide (FTO) substrate. The analogous crystal orientation and interplanar spacing of ZrO2 between the two layers resulted in composite immobilization on the FTO substrate. X-ray diffraction analysis confirmed that ZrO2 growth occurred along the same crystal planes in both layers. The film exhibited a low band gap energy (2.6 eV) and excellent light absorption. Photocatalytic performance achieved 92% para-nitrophenol degradation in 150 min. The degradation performance of this immobilization method was 43% higher than those of rGO/ZrO2/Ag3PO4 films deposited with conventional binder approaches. The quantum yield of the system was 3.46 × 10-5 molecules·photon-1. Finally, a figure of merit based on different parameters was determined and compared with previous results to assess the practicality of this system.
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Affiliation(s)
- Hassan Anwer
- Department of Civil and Environmental Engineering, Hanyang University, 222-Wangsimni-ro, Seoul, 133-791, South Korea
| | - Jae-Woo Park
- Department of Civil and Environmental Engineering, Hanyang University, 222-Wangsimni-ro, Seoul, 133-791, South Korea.
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24
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Mugunthan E, Saidutta MB, Jagadeeshbabu PE. Photocatalytic degradation of diclofenac using TiO 2-SnO 2 mixed oxide catalysts. ENVIRONMENTAL TECHNOLOGY 2019; 40:929-941. [PMID: 29187119 DOI: 10.1080/09593330.2017.1411398] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 11/25/2017] [Indexed: 06/07/2023]
Abstract
The complex nature of diclofenac limits its biological degradation, posing a serious threat to aquatic organisms. Our present work aims to eliminate diclofenac from wastewater through photocatalytic degradation using TiO2-SnO2 mixed-oxide catalysts under various operating conditions such as catalyst loading, initial diclofenac concentration and initial pH. Different molar ratios of Ti-Sn (1:1, 5:1, 10:1, 20:1 and 30:1) were prepared by the hydrothermal method and were characterized. The results indicated that addition of Sn in small quantity enhances the catalytic activity of TiO2. Energy Band gap of the TiO2-SnO2 catalysts was found to increase with an increase in Tin content. TiO2-SnO2 catalyst with a molar ratio of 20:1 was found to be the most effective when compared to other catalysts. The results suggested that initial drug concentration of 20 mg/L, catalyst loading of 0.8 g/L and pH 5 were the optimum operating conditions for complete degradation of diclofenac. Also, the TiO2-SnO2 catalyst was effective in complete mineralization of diclofenac with a maximum total organic carbon removal of 90% achieved under ultraviolet irradiation. The repeatability and stability results showed that the TiO2-SnO2 catalyst exhibited an excellent repeatability and better stability over the repeated reaction cycles. The photocatalytic degradation of diclofenac resulted in several photoproducts, which were identified through LC-MS.
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Affiliation(s)
- E Mugunthan
- a Department of Chemical Engineering , National Institute of Technology Karnataka , Surathkal , Mangalore , India
| | - M B Saidutta
- a Department of Chemical Engineering , National Institute of Technology Karnataka , Surathkal , Mangalore , India
| | - P E Jagadeeshbabu
- a Department of Chemical Engineering , National Institute of Technology Karnataka , Surathkal , Mangalore , India
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25
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Khodam F, Amani-Ghadim HR, Aber S, Amani-Ghadim AR, Ahadzadeh I. Neodymium doped mixed metal oxide derived from CoAl-layered double hydroxide: Considerable enhancement in visible light photocatalytic activity. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.08.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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26
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Use of ion-assisted sputtering technique for producing photocatalytic titanium dioxide thin films: Influence of thermal treatments on structural and activity properties based on the decomposition of stearic acid. Polym Degrad Stab 2018. [DOI: 10.1016/j.polymdegradstab.2018.09.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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27
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Katal R, Salehi M, Davood Abadi Farahani MH, Masudy-Panah S, Ong SL, Hu J. Preparation of a New Type of Black TiO 2 under a Vacuum Atmosphere for Sunlight Photocatalysis. ACS APPLIED MATERIALS & INTERFACES 2018; 10:35316-35326. [PMID: 30226370 DOI: 10.1021/acsami.8b14680] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Black TiO2 as a solar-driven photocatalyst has attracted enormous attention from scientists and engineers in water and wastewater treatment field. Most of the methods used for the preparation of black TiO2 are thermal treatment under a hydrogen atmosphere. Nevertheless, it is well known that working with hydrogen is not safe and needs special maintenance. Here, for the first time, we prepared black TiO2 by sintering P25 pellets at different temperatures (500-800 °C) under a vacuum atmosphere that showed the same performance with the prepared black TiO2 under a hydrogen atmosphere. The samples were characterized by X-ray diffraction, Raman spectra field emission scanning electron microscopy, transmission electron microscopy, electron paramagnetic resonance, X-ray photoelectron spectroscopy, and ultraviolet-visible deep resistivity sounding techniques. The differences between the formation of oxygen vacancy density and color turning in sintered powder and pellet were also studied. The results showed that the color of the P25 powder became darker after sintering but not completely turning to black, whereas the P25 pellets completely turned black after sintering. The resultant black TiO2 was used for the photocatalytic degradation of the acetaminophen (ACE) in aqueous solution under AM 1.5G solar light illumination; it was found that the P25 pellet sintered in 500 °C had the highest photocatalytic performance for ACE degradation under AM 1.5G solar light illumination. The photocatalytic activity of prepared black TiO2 under vacuum and hydrogen atmospheres was also compared together; the results showed that photocatalytic activities of both samples were so close together. The existence of the oxygen vacancy after 6 months and long and short-term stability (by application for photocatalytic degradation of ACE in an aqueous solution) of the black TiO2 pellets was also studied; the results showed that the TiO2 pellets in aqueous phase had acceptable stability.
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Affiliation(s)
- Reza Katal
- Department of Civil & Environmental Engineering , National University of Singapore , 117576 , Singapore
| | - Mojtaba Salehi
- Department of Mechanical Engineering , National University of Singapore , 117575 , Singapore
| | | | - Saeid Masudy-Panah
- Department of Electrical and Computer Engineering , National University of Singapore , 119260 , Singapore
| | - Say Leong Ong
- Department of Civil & Environmental Engineering , National University of Singapore , 117576 , Singapore
| | - Jiangyong Hu
- Department of Civil & Environmental Engineering , National University of Singapore , 117576 , Singapore
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28
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Hassan SM, Ahmed AI, Mannaa MA. Structural, photocatalytic, biological and catalytic properties of SnO2/TiO2 nanoparticles. CERAMICS INTERNATIONAL 2018; 44:6201-6211. [DOI: 10.1016/j.ceramint.2018.01.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
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29
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Bibi R, Shen Q, Wei L, Hao D, Li N, Zhou J. Hybrid BiOBr/UiO-66-NH2 composite with enhanced visible-light driven photocatalytic activity toward RhB dye degradation. RSC Adv 2018; 8:2048-2058. [PMID: 35542604 PMCID: PMC9077208 DOI: 10.1039/c7ra11500h] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 12/06/2017] [Indexed: 11/26/2022] Open
Abstract
Metal–organic framework (MOFs) based composites have received more research interest for photocatalytic applications during recent years. In this work, a highly active, visible light photocatalyst BiOBr/UiO-66-NH2 hybrid composite was successfully prepared by introducing various amounts of UiO-66-NH2 with BiOBr through a co-precipitation method. The composites were applied for the photocatalytic degradation of RhB (rhodamine B) dye. The developed BiOBr/UiO-66-NH2 composites exhibited higher photocatalytic activity than the pristine material. In RhB degradation experiments the hybrid composite with 15 wt% of UiO-66-NH2 shows degradation efficiency conversion of 83% within two hours under visible light irradiation. The high photodegradation efficiency of BUN-15 could be ascribed to efficient interfacial charge transfer at the heterojunction and the synergistic effect between BiOBr/UiO-66-NH2. In addition, an active species trapping experiment confirmed that photo-generated hole+ and O2− radicals are the major species involved in RhB degradation under visible light. Metal–organic framework (MOFs) based composites have received more research interest for photocatalytic applications during recent years.![]()
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Affiliation(s)
- Rehana Bibi
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- P. R. China
| | - Quanhao Shen
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- P. R. China
| | - Lingfei Wei
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- P. R. China
| | - Dandan Hao
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- P. R. China
| | - Naixu Li
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- P. R. China
| | - Jiancheng Zhou
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing
- P. R. China
- Department of Chemical and Pharmaceutical Engineering
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30
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Zhou R, Han Y, Cao J, Li M, Jin G, Luo H, Zhang L, Su B. Electrically bioactive coating on Ti with bi-layered SnO2–TiO2 hetero-structure for improving osteointegration. J Mater Chem B 2018; 6:3989-3998. [DOI: 10.1039/c8tb00709h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
SnO2–TiO2 surface with the bi-layered structure on Ti provides internal electric stimulation to promote osteointegration of implant.
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Affiliation(s)
- Rui Zhou
- State Key Laboratory for Mechanical Behavior of Materials
- Xi’an Jiaotong University
- Xi’an 710049
- P. R. China
- Bristol Dental School
| | - Yong Han
- State Key Laboratory for Mechanical Behavior of Materials
- Xi’an Jiaotong University
- Xi’an 710049
- P. R. China
| | - Jianyun Cao
- School of Materials
- University of Manchester
- Manchester M13 9PL
- UK
| | - Ming Li
- Honghui Hospital
- Xi’an Jiaotong University College of Medicine
- Xi’an 710054
- P. R. China
| | - Guorui Jin
- Bioinspired Engineering and Biomechanics Center
- Xi’an Jiaotong University
- Xi’an 710049
- P. R. China
| | - Haoteng Luo
- State Key Laboratory for Mechanical Behavior of Materials
- Xi’an Jiaotong University
- Xi’an 710049
- P. R. China
| | - Lizhai Zhang
- State Key Laboratory for Mechanical Behavior of Materials
- Xi’an Jiaotong University
- Xi’an 710049
- P. R. China
| | - Bo Su
- Bristol Dental School
- University of Bristol
- Bristol BS1 2LY
- UK
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31
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Nasirian M, Bustillo-Lecompte CF, Mehrvar M. Photocatalytic efficiency of Fe 2O 3/TiO 2 for the degradation of typical dyes in textile industries: Effects of calcination temperature and UV-assisted thermal synthesis. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 196:487-498. [PMID: 28343050 DOI: 10.1016/j.jenvman.2017.03.030] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 02/23/2017] [Accepted: 03/12/2017] [Indexed: 06/06/2023]
Abstract
The inadequate management practices in industrial textile effluents have a considerable negative impact on the environment and human health due to the indiscriminate release of dyes. Photocatalysis is one of the diverse advance oxidation processes (AOPs) and titanium dioxide (TiO2) is recognized for its high oxidation and reduction power. A composite photocatalyst of Fe2O3/TiO2 is synthesized using different mass ratios of Fe:TiO2 to improve its photoactivity. The composite photocatalyst is calcined at 300-900 °C. Their photocatalytic activity for the degradation of Congo red (CR) and methyl orange (MO) is investigated by total organic carbon (TOC) analysis. The formation and characterization of the as-prepared composite are studied by scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDS). The effect of calcination temperature on the composite Fe2O3/TiO2 photocatalyst is investigated using Fourier transform infrared spectroscopy (FTIR). The photocatalytic activity and the phase conversion are studied by X-ray diffraction (XRD). The specific surface area of photocatalysts at different calcination temperatures is investigated based on Brunauer-Emmett-Teller (BET) surface area analysis. Results show that at an optimum calcination temperature of 300 °C for the photocatalyst preparation, the specific surface area is maximum and the photocatalyst has the highest photoactivity. Thus, the degradation of organic materials reaches 62.0% for MO and 46.8% for CR in the presence of Fe2O3/TiO2 (0.01 w:w Fe:TiO2) calcined at 300 °C with the highest specific surface area (98.73 m2/g). The transformation of TiO2 from anatase to rutile is facilitated by high temperature and high concentration of iron while high crystallization and particle size increase occur. An optimum calcination temperature of 300 °C is found at which the degradation of typical dyes in textile industries is maximum.
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Affiliation(s)
- Mohsen Nasirian
- Graduate Programs in Environmental Applied Science and Management, Ryerson University, 350 Victoria Street, Toronto, ON, M5B 2K3, Canada
| | | | - Mehrab Mehrvar
- Department of Chemical Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, M5B 2K3, Canada.
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32
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Low J, Yu J, Jaroniec M, Wageh S, Al-Ghamdi AA. Heterojunction Photocatalysts. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1601694. [PMID: 28220969 DOI: 10.1002/adma.201601694] [Citation(s) in RCA: 1306] [Impact Index Per Article: 186.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 11/04/2016] [Indexed: 05/20/2023]
Abstract
Semiconductor-based photocatalysis attracts wide attention because of its ability to directly utilize solar energy for production of solar fuels, such as hydrogen and hydrocarbon fuels and for degradation of various pollutants. However, the efficiency of photocatalytic reactions remains low due to the fast electron-hole recombination and low light utilization. Therefore, enormous efforts have been undertaken to solve these problems. Particularly, properly engineered heterojunction photocatalysts are shown to be able to possess higher photocatalytic activity because of spatial separation of photogenerated electron-hole pairs. Here, the basic principles of various heterojunction photocatalysts are systematically discussed. Recent efforts toward the development of heterojunction photocatalysts for various photocatalytic applications are also presented and appraised. Finally, a brief summary and perspectives on the challenges and future directions in the area of heterojunction photocatalysts are also provided.
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Affiliation(s)
- Jingxiang Low
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, P. R. China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, P. R. China
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Mietek Jaroniec
- Department of Chemistry and Biochemistry, Kent State University, Kent, Ohio, 44242, USA
| | - Swelm Wageh
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Ahmed A Al-Ghamdi
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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33
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Farhadi A, Mohammadi M, Ghorbani M. On the assessment of photocatalytic activity and charge carrier mechanism of TiO 2 @SnO 2 core-shell nanoparticles for water decontamination. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.02.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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34
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Malik R, Tomer VK, Chaudhary V, Dahiya MS, Rana PS, Nehra SP, Duhan S. Facile Synthesis of Hybridized Mesoporous Au@TiO2/SnO2as Efficient Photocatalyst and Selective VOC Sensor. ChemistrySelect 2016. [DOI: 10.1002/slct.201600634] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ritu Malik
- Materials Research Laboratory; Department of Physics; D.C.R. University of Science & Technology; Murthal (Sonepat) Haryana 131039 INDIA
| | - Vijay K. Tomer
- Department of Materials Science & Nanotechnology; D.C.R. University of Science & Technology; Murthal (Sonepat) Haryana 131039 INDIA
| | - Vandna Chaudhary
- Centre of Excellence for Energy and Environmental Studies; D.C.R. University of Science & Technology; Murthal (Sonepat) Haryana 131039 INDIA
| | - Manjeet S. Dahiya
- Materials Research Laboratory; Department of Physics; D.C.R. University of Science & Technology; Murthal (Sonepat) Haryana 131039 INDIA
| | - Pawan S. Rana
- Materials Research Laboratory; Department of Physics; D.C.R. University of Science & Technology; Murthal (Sonepat) Haryana 131039 INDIA
| | - S. P. Nehra
- Centre of Excellence for Energy and Environmental Studies; D.C.R. University of Science & Technology; Murthal (Sonepat) Haryana 131039 INDIA
- Microelectronics Research Center; Iowa State University; Ames Iowa- 50011 USA
| | - Surender Duhan
- Department of Materials Science & Nanotechnology; D.C.R. University of Science & Technology; Murthal (Sonepat) Haryana 131039 INDIA
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35
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Malik R, Tomer VK, Duhan S, Rana PS, Nehra SP. Facile Preparation of TiO2-SnO2 Catalysts using TiO2 as an Auxiliary for Gas Sensing and Advanced Oxidation Processes. ACTA ACUST UNITED AC 2016. [DOI: 10.1557/adv.2016.438] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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36
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Synergistic effects in N-K2Ti4O9/UiO-66-NH2 composites and their photocatalysis degradation of cationic dyes. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(15)61033-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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37
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Wu J, Lu S, Ge D, Zhang L, Chen W, Gu H. Photocatalytic properties of Pd/TiO2 nanosheets for hydrogen evolution from water splitting. RSC Adv 2016. [DOI: 10.1039/c6ra10408h] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Pd/TiO2 nanosheet catalysts were successfully prepared and used in the photocatalytic water splitting reaction. The Pd/TiO2 nanosheet catalysts showed immensely improved photocatalytic activities compared to pure TiO2 nanosheets.
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Affiliation(s)
- Junjie Wu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry, Chemical Engineering and Materials Science
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou 215123
| | - Shuanglong Lu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry, Chemical Engineering and Materials Science
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou 215123
| | - Danhua Ge
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry, Chemical Engineering and Materials Science
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou 215123
| | - Longzhu Zhang
- National University of Singapore (Suzhou) Research Industrial Park
- China
| | - Wei Chen
- National University of Singapore (Suzhou) Research Industrial Park
- China
- Department of Chemistry
- National University of Singapore
- Singapore
| | - Hongwei Gu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry, Chemical Engineering and Materials Science
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Soochow University
- Suzhou 215123
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38
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Song G, Luo C, Fu Q, Pan C. Hydrothermal synthesis of the novel rutile-mixed anatase TiO2 nanosheets with dominant {001} facets for high photocatalytic activity. RSC Adv 2016. [DOI: 10.1039/c6ra17665h] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
We introduce a hydrothermal route to synthesize rutile-mixed anatase nanosheets with dominant {001} facets for high photocatalytic activity.
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Affiliation(s)
- Gongsheng Song
- School of Physics and Technology
- MOE Key Laboratory of Artificial Micro- and Nano-structures
- Wuhan University
- Wuhan
- China
| | - Chengzhi Luo
- School of Physics and Technology
- MOE Key Laboratory of Artificial Micro- and Nano-structures
- Wuhan University
- Wuhan
- China
| | - Qiang Fu
- School of Physics and Technology
- MOE Key Laboratory of Artificial Micro- and Nano-structures
- Wuhan University
- Wuhan
- China
| | - Chunxu Pan
- School of Physics and Technology
- MOE Key Laboratory of Artificial Micro- and Nano-structures
- Wuhan University
- Wuhan
- China
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39
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Manjumol KA, Sankar S, Nair BN, Midhun M, Mohamed PA, Warrier KGK. A novel approach to formulate high flux multifunctional ultrafiltration membranes from photocatalytic titania composite precursors on multi-channel tubular substrates. RSC Adv 2016. [DOI: 10.1039/c6ra14117j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Anatase rich titanium dioxide ultrafiltration membranes with high filtration rates have been successfully developed on multi-channel tubular alumina substrates via aqueous sol–gel method from titania–alumina composite precursors.
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Affiliation(s)
- K. A. Manjumol
- Materials Science and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Trivandrum-695 019
- India
| | - S. Sankar
- Materials Science and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Trivandrum-695 019
- India
| | | | - M. Midhun
- Materials Science and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Trivandrum-695 019
- India
| | - Peer A. Mohamed
- Materials Science and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Trivandrum-695 019
- India
| | - K. G. K. Warrier
- Materials Science and Technology Division
- CSIR-National Institute for Interdisciplinary Science and Technology
- Trivandrum-695 019
- India
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40
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Li S, Wang X, Xu Y, Yang H, Wei F, Liu X. The excellent photocatalytic synergism of PbBiO2Br/UiO-66-NH2 composites via multiple coupling effects. RSC Adv 2016. [DOI: 10.1039/c6ra17185k] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
PbBiO2Br/UiO-66-NH2 composites synthesized by a facile solvothermal method have a core–shell structure with UiO-66-NH2 forming the shell around a PbBiO2Br core.
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Affiliation(s)
- Sunfeng Li
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering
- Hefei 230009
- China
| | - Xing Wang
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering
- Hefei 230009
- China
| | - Yanli Xu
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering
- Hefei 230009
- China
| | - Hanbiao Yang
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering
- Hefei 230009
- China
| | - Fengyu Wei
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering
- Hefei 230009
- China
| | - Xueting Liu
- School of Chemistry and Chemical Engineering
- Hefei University of Technology
- Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering
- Hefei 230009
- China
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41
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Wen J, Li X, Liu W, Fang Y, Xie J, Xu Y. Photocatalysis fundamentals and surface modification of TiO2 nanomaterials. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(15)60999-8] [Citation(s) in RCA: 400] [Impact Index Per Article: 44.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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42
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Yuan J, Zhang X, Li H, Wang K, Gao S, Yin Z, Yu H, Zhu X, Xiong Z, Xie Y. TiO2/SnO2 double-shelled hollow spheres-highly efficient photocatalyst for the degradation of rhodamine B. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2014.11.032] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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43
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Khodam F, Rezvani Z, Amani-Ghadim AR. Fabrication of a novel ZnO/MMO/CNT nanohybrid derived from multi-cationic layered double hydroxide for photocatalytic degradation of azo dye under visible light. RSC Adv 2015. [DOI: 10.1039/c4ra17001f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A facile and effective approach for assembling ZnO/MMO/CNT nanohybrid with excellent photodegradation performance under visible light is reported.
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Affiliation(s)
- Fatemeh Khodam
- Department of Chemistry
- Faculty of Basic Sciences
- Azarbaijan Shahid Madani University
- Tabriz
- Iran
| | - Zolfaghar Rezvani
- Department of Chemistry
- Faculty of Basic Sciences
- Azarbaijan Shahid Madani University
- Tabriz
- Iran
| | - Ali Reza Amani-Ghadim
- Department of Chemistry
- Faculty of Basic Sciences
- Azarbaijan Shahid Madani University
- Tabriz
- Iran
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44
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Kongsong P, Sikong L, Niyomwas S, Rachpech V. Photocatalytic Degradation of Glyphosate in Water by N-Doped SnO2/TiO2Thin-Film-Coated Glass Fibers. Photochem Photobiol 2014; 90:1243-50. [DOI: 10.1111/php.12338] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Accepted: 08/20/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Peerawas Kongsong
- Department of Mining and Materials Engineering; Faculty of Engineering; Prince of Songkla University; Hat Yai Songkhla Thailand
| | - Lek Sikong
- Department of Mining and Materials Engineering; Faculty of Engineering; Prince of Songkla University; Hat Yai Songkhla Thailand
| | - Sutham Niyomwas
- Department of Mechanical Engineering; Faculty of Engineering; Prince of Songkla University; Hat Yai Songkhla Thailand
| | - Vishnu Rachpech
- Department of Mining and Materials Engineering; Faculty of Engineering; Prince of Songkla University; Hat Yai Songkhla Thailand
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45
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Liu L, Chen X. Titanium Dioxide Nanomaterials: Self-Structural Modifications. Chem Rev 2014; 114:9890-918. [DOI: 10.1021/cr400624r] [Citation(s) in RCA: 395] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Lei Liu
- State
Key Laboratory of Luminescence and Applications, Changchun Institute
of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 130033, Changchun, Jilin, People’s Republic of China
| | - Xiaobo Chen
- Department
of Chemistry, University of Missouri—Kansas City, Kansas City, Missouri 64110, United States
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46
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Mohammadi MM, Vossoughi M, Feilizadeh M, Rashtchian D, Moradi S, Alemzadeh I. Effects of electrophoretic deposition parameters on the photocatalytic activity of TiO2 films: Optimization by response surface methodology. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.03.048] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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47
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TiO2 Microwave Synthesis, Electrophoretic Deposition of Thin Film, and Photocatalytic Properties for Methylene Blue and Methyl Red Dyes. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/326747] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Electrophoretic deposition (EPD) of TiO2 thin film was carried out at room temperature on low cost steel substrate using microwave synthesized nanoparticles (NPs) of TiO2. Synthesized NPs and EPD thin film were characterized at different stages of synthesis for its crystal structure, morphology, elemental analysis, and surface area. Spherical particle morphology and formation of TiO2 were confirmed by scanning electron micrograph (SEM), energy dispersive spectrometer (EDS), and X-ray diffraction (XRD). Synthesized NPs were formed in anatase phase having crystallite size of about 12.3 nm from Scherrer's formula using full width half maxima (FWHM). Surface area was found to be 43.52 m2/g by BET giving particle size of 33 nm. Photocatalytic (PC) behavior of TiO2 NPs and EPD TiO2 film on steel substrate was investigated under UV light for two commercial dyes and their photocatalysis efficiency was analyzed. NPs have shown better efficiency for methylene blue (MB) dye than EPD film whereas EPD film have shown higher PC activity for methyl red (MR) dye.
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48
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Gomathi Devi L, Kavitha R. Review on modified N–TiO2 for green energy applications under UV/visible light: selected results and reaction mechanisms. RSC Adv 2014. [DOI: 10.1039/c4ra03291h] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Modifications of the activity, band structure, morphology, optical and electronic properties of N–TiO2 for energy and environmental applications.
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Affiliation(s)
- L. Gomathi Devi
- Department of Post Graduate Studies in Chemistry
- Bangalore University
- Bangalore-560001, India
| | - R. Kavitha
- Department of Post Graduate Studies in Chemistry
- Bangalore University
- Bangalore-560001, India
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49
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Abazari R, Mahjoub AR, Sanati S. A facile and efficient preparation of anatase titania nanoparticles in micelle nanoreactors: morphology, structure, and their high photocatalytic activity under UV light illumination. RSC Adv 2014. [DOI: 10.1039/c4ra10018b] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Comparative photocatalysis degradation of MB dye under ultraviolet light irradiation: (a) without photocatalyst; (b) commercial P25 TiO2 powder; and (c) TiO2 nanoparticles.
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Affiliation(s)
- Reza Abazari
- Department of Chemistry
- Tarbiat Modares University
- Tehran, Iran
| | | | - Soheila Sanati
- Department of Chemistry
- Faculty of Basic Sciences
- Azarbaijan Shahid Madani University
- Tabriz, Iran
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50
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Wang Y, Lai Q, Zhang F, Shen X, Fan M, He Y, Ren S. High efficiency photocatalytic conversion of CO2 with H2O over Pt/TiO2 nanoparticles. RSC Adv 2014. [DOI: 10.1039/c4ra07457b] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Pt/TiO2 nanoparticles were prepared by a solvothermal method and used for high efficiency photocatalytic CO2 conversion.
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Affiliation(s)
- Yan Wang
- Department of Chemical & Petroleum Engineering
- University of Wyoming
- Laramie, USA
| | - Qinghua Lai
- Department of Chemical & Petroleum Engineering
- University of Wyoming
- Laramie, USA
| | - Fan Zhang
- Department of Chemical & Petroleum Engineering
- University of Wyoming
- Laramie, USA
- School of Chemical and Environmental Engineering
- China University of Mining and Technology
| | - Xiaodong Shen
- College of Materials Science and Engineering
- Nanjing University of Technology
- Nanjing, China
| | - Maohong Fan
- Department of Chemical & Petroleum Engineering
- University of Wyoming
- Laramie, USA
- School of Energy Resources
- University of Wyoming
| | - Yiming He
- Department of Chemical & Petroleum Engineering
- University of Wyoming
- Laramie, USA
- Department of Materials Physics
- Zhejiang Normal University
| | - Shenqiang Ren
- Department of Chemistry
- University of Kansas
- Lawrence, USA
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