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Esrafili A, Salimi M, jonidi jafari A, Reza Sobhi H, Gholami M, Rezaei Kalantary R. Pt-based TiO2 photocatalytic systems: A systematic review. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118685] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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A. Habeeb Alshamsi H, S. Hussein B. Hydrothermal Preparation of Silver Doping Zinc Oxide Nanoparticles: Studys, Characterization and Photocatalytic Activity. ACTA ACUST UNITED AC 2018. [DOI: 10.13005/ojc/3404025] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this study , we report the prepared of ZnO nanoparticles and Ag doped ZnO nanostructure via a hydrothermal process. The obtained nanostructures were characterized using different characterization techniques such as X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) , atomic force microscopy (AFM) ,Fourier transform infrared spectrometry (FTIR)and UV/Visible spectrophotometer.The XRD results showed the wurtzite hexagonal structure of the ZnO Nanoparticles. Furthermore, the morphology of ZnO and Ag-ZnO nanostructures was obtained from SEM and AFM. The photocatalytic degradation of Cibacron Brilliant Yellow 3G-P (CB) dye was studied in presence of visible light using Ag-ZnO nanostructures as a photocatalyst. There are numerous factors which has an effect on the efficiency color removal of this process. Hence a study was conducted on the effect of several parameters on Ag-ZnO like amount of catalyst, CB dye concentration and pH of solution. Results showed Ag doping ZnO with 3% loading shows photocatalytic removal about 65% after 120 min which influenced superior photocatalytic activity than pure ZnO.
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Affiliation(s)
- Hassan A. Habeeb Alshamsi
- Department of Chemistry, College of Education, University of Al-Qadisiyah, Post Box 88, Diwaniya, Iraq
| | - Batool S. Hussein
- Department of Chemistry, College of Education, University of Al-Qadisiyah, Post Box 88, Diwaniya, Iraq
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Ahmari H, Heris SZ, Khayyat MH. The effect of titanium dioxide nanoparticles and UV irradiation on photocatalytic degradation of Imidaclopride. ENVIRONMENTAL TECHNOLOGY 2018; 39:536-547. [PMID: 28287906 DOI: 10.1080/09593330.2017.1306115] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 03/07/2017] [Indexed: 06/06/2023]
Abstract
Imidaclopride is an insecticide widely used for pest control in agriculture around the world. It acts on the central nervous system of insects, while posing lower toxicity to mammals. This is an organic material made of Pyridinium, Dihydroimidazol and Nitramide. This structure poses a threat to the environment and humans. Until now, different types of methods have been used for elimination of this organic pollution. Recently, advanced oxidation processes (AOPs) are presented as a proposed method to remove this organic pollution. Photocatalytic degradation is also used as an efficient method for destruction of organic structures. In this study, the effect of titanium dioxide (TiO2) nanoparticle as a photocatalyst activated by UV irradiation is investigated. The new design of the reactor was prepared with coaxial cylinders in which the inner cylinder is rotated at a constant speed. The reactor worked in two batch and continuous modes. The results show that the UV irradiation is more effective than activated TiO2 nanoparticle, as the designed reactor with UV irradiation eliminated Imidaclopride in less than 2 hours.
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Affiliation(s)
- Hadi Ahmari
- a Chemical Engineering Department, Faculty of Engineering , Ferdowsi University of Mashhad , Mashhad , Iran
- d Present address: Department of Chemical Engineering, Quchan Branch , Islamic Azad University , Quchan , Iran
| | - Saeed Zeinali Heris
- b Faculty of Chemical and Petroleum Engineering , University of Tabriz , Tabriz , Iran
| | - Mohammad Hassanzadeh Khayyat
- c Pharmaceutical Sciences Research Center, Department of Pharmaceutical Chemistry , University of Medical Sciences , Mashhad , Iran
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Abdulrazzak FH, Hussein FH, Alkaim AF, Ivanova I, Emeline AV, Bahnemann DW. Sonochemical/hydration-dehydration synthesis of Pt-TiO 2 NPs/decorated carbon nanotubes with enhanced photocatalytic hydrogen production activity. Photochem Photobiol Sci 2018; 15:1347-1357. [PMID: 27714320 DOI: 10.1039/c6pp00240d] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Modified Pt-TiO2 NPs/decorated carbon nanotubes were synthesized utilizing sonochemical/hydration-dehydration techniques. Pt was loaded on TiO2 by a photodeposition method keeping in mind the end goal to achieve electron-hole pair separation and promote the surface reaction. The morphological and basic properties of Pt-TiO2/fCNTs were investigated by field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM), powder X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy (DRS), photoluminescence (PL) and Raman spectroscopy. The selected area electron diffraction (SAED) patterns of Pt-TiO2/fCNTs were obtained utilizing TEM-based energy dispersive X-ray spectroscopy (EDXS) analysis. It was found that the TiO2 nanoparticles were uniformly distributed on the fCNTs, and the Pt particles were decorated on the surface of TiO2/fCNTs. The photocatalytic hydrogen production activity of the Pt(0.5%)-TiO2/fCNTs(0.5%) nanoparticle composites was investigated using a sacrificial agent methanol solution. Pt-loaded TiO2 demonstrated a hydrogen evolution rate around 20 times that of TiO2/fCNTs(0.5%) (fSWCNTs, fMWCNTs). When compared with platinized TiO2 in methanol, which was utilized as a control material, Pt-TiO2/fCNTs demonstrated an almost 2-fold increment in hydrogen generation.
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Affiliation(s)
- Firas H Abdulrazzak
- Chemistry Department, College of Education for Pure Sciences, Diyala University, Diyala, Iraq
| | | | - Ayad F Alkaim
- Department of Chemistry, College of Science for Women, Babylon University, Hilla, Iraq and Institut für Technische Chemie, Leibniz Universität Hannover, Callinstrasse 3, D-30167, Hannover, Germany.
| | - Irina Ivanova
- Institut für Technische Chemie, Leibniz Universität Hannover, Callinstrasse 3, D-30167, Hannover, Germany.
| | - Alexei V Emeline
- Laboratory "Photoactive Nanocomposite Materials", Saint-Petersburg State University, Ulyanovskaya str. 1, Peterhof, Saint-Petersburg 198504, Russia
| | - Detlef W Bahnemann
- Institut für Technische Chemie, Leibniz Universität Hannover, Callinstrasse 3, D-30167, Hannover, Germany. and Laboratory "Photoactive Nanocomposite Materials", Saint-Petersburg State University, Ulyanovskaya str. 1, Peterhof, Saint-Petersburg 198504, Russia
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Alkaim AF, Alrobayi EM, Algubili AM, Aljeboree AM. Synthesis, characterization, and photocatalytic activity of sonochemical/hydration-dehydration prepared ZnO rod-like architecture nano/microstructures assisted by a biotemplate. ENVIRONMENTAL TECHNOLOGY 2017; 38:2119-2129. [PMID: 27884094 DOI: 10.1080/09593330.2016.1246615] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 10/04/2016] [Indexed: 06/06/2023]
Abstract
ZnO nanoparticles of rod-like architecture have excellent potential to be used in wastewater treatment as a photocatalyst. They were synthesized by utilizing sonochemical/hydration- dehydration techniques using glutamine as a biotemplate. The effects of calcination temperatures, that is, 300°C, 500°C, and 700°C, on the crystallinity, optical properties, and photocatalytic activity of synthesized zinc oxide nanoparticles were investigated. X-ray diffraction (XRD) results indicated that all calcinated samples have a crystalline hexagonal wurtzite structure. Morphology and elemental compositions were investigated using field emission-scanning electron microscopy with energy-dispersive X-ray spectroscopy. The XRD and Fourier transform infrared (FTIR) spectra revealed that the samples were amorphous at 100°C; however, it changed into a crystalline structure amid the calcination process. Optical properties were determined using a UV-visible reflection spectrophotometer and showed abatement in the band gap with increasing annealing temperature. The progress of the photocatalytic degradation was monitored by a UV-visible spectrophotometer, while the mineralization ability was estimated by total organic carbon tests of ZnO-calcinated samples. The effect of various operational parameters the photocatalytic efficiency and rate of dye degradation was studied. High photocatalytic degradation of maxilon blue dye (GRL) was found at pH 6.3.
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Affiliation(s)
- Ayad F Alkaim
- a Department of Chemistry, College of Science for Women , Babylon University , Hilla , Iraq
- b Institut für Technische Chemie, Leibniz Universität Hannover , Hannover , Germany
| | - Enas M Alrobayi
- c Department of Laser Physics, College of Science for Women , Babylon University , Hilla , Iraq
| | - Abrar M Algubili
- d Department of Pharmacy, College of Pharmacy , Kufa University , Najaf , Iraq
| | - Aseel M Aljeboree
- a Department of Chemistry, College of Science for Women , Babylon University , Hilla , Iraq
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Klauson D, Šakarašvili M, Pronina N, Krichevskaya M, Kärber E, Mikli V. Aqueous photocatalytic degradation of selected micropollutants by Pd-modified titanium dioxide in three photoreactor types. ENVIRONMENTAL TECHNOLOGY 2017; 38:860-871. [PMID: 27491514 DOI: 10.1080/09593330.2016.1214185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 07/13/2016] [Indexed: 06/06/2023]
Abstract
The goals of the present study were to synthesise highly efficient Pd-TiO2 photocatalyst, to characterise its performance in slurry in smaller scale and to investigate its performance in the aqueous photocatalytic oxidation of three antibiotics: doxycycline, sulphamethizole and amoxicillin. The performance of the photocatalyst was evaluated in an open batch slurry reactor equipped with a fluorescent long-wavelength ultraviolet (UVA) lamp (0.2 L). With the fastest degrading doxycycline, experimental research was continued in a fixed-bed continuous flow photoreactor (0.13 L), with the Pd-TiO2 photocatalyst attached to a glass plate, and a medium laboratory-scale three-phase fluidised-bed reactor (2 L) equipped with four fluorescent UVA lamps, with the photocatalyst attached to the surface of expanded clay granules employed as the bed material. While showing very high activity in the batch slurry reactor, far surpassing P25 Aeroxide, the performance of Pd-TiO2 with doxycycline was comparable to P25 in the semi-continuous reactors.
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Affiliation(s)
- Deniss Klauson
- a Department of Chemical Engineering , Tallinn University of Technology , Tallinn , Estonia
| | - Marko Šakarašvili
- a Department of Chemical Engineering , Tallinn University of Technology , Tallinn , Estonia
| | - Natalja Pronina
- a Department of Chemical Engineering , Tallinn University of Technology , Tallinn , Estonia
| | - Marina Krichevskaya
- a Department of Chemical Engineering , Tallinn University of Technology , Tallinn , Estonia
| | - Erki Kärber
- b Department of Materials Science , Tallinn University of Technology , Tallinn , Estonia
| | - Valdek Mikli
- b Department of Materials Science , Tallinn University of Technology , Tallinn , Estonia
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Alkaim AF, Kandiel TA, Dillert R, Bahnemann DW. Photocatalytic hydrogen production from biomass-derived compounds: a case study of citric acid. ENVIRONMENTAL TECHNOLOGY 2016; 37:2687-2693. [PMID: 26930545 DOI: 10.1080/09593330.2016.1158871] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Accepted: 02/23/2016] [Indexed: 06/05/2023]
Abstract
Highly crystalline anatase TiO2 nanoparticles with high BET surface area have been synthesized by thermal hydrolysis of titanium(IV) bis(ammoniumlactato) dihydroxide aqueous solutions. The photocatalytic H2 production from aqueous citric acid (CA) solutions over Pt-loaded TiO2 has been investigated under different experimental conditions, that is, different CA concentration, temperature, light intensity, and pH of Pt/TiO2 suspension. For comparison, the photocatalytic dehydrogenation of triethanolamine (TEA) has also been investigated. The highest H2 production rates were obtained at pH 3 and 9 for CA and TEA, respectively. This behavior is readily explained by the adsorption characteristic of the employed reagent on the surface of the charged TiO2. The effect of the photocatalyst loading and the light intensity on the H2 production rate showed the same behavior in the case of CA and TEA evincing that these parameters are catalyst dependent. The apparent activation energies have been determined to be 13.5 ± 1.8 and 14.7 ± 1.6 kJ mol(-1) for CA and TEA, respectively, indicating the existence of an activation energy barrier in a photocatalytic process which can be attributed to the desorption of adsorbed products.
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Affiliation(s)
- Ayad F Alkaim
- a Institut für Technische Chemie, Leibniz Universität Hannover , Hannover , Germany
- b Department of Chemistry, College of Science for Women , Babylon University , Hilla , Iraq
| | - Tarek A Kandiel
- c Department of Chemistry, Faculty of Science , Sohag University , Sohag , Egypt
| | - Ralf Dillert
- a Institut für Technische Chemie, Leibniz Universität Hannover , Hannover , Germany
| | - Detlef W Bahnemann
- a Institut für Technische Chemie, Leibniz Universität Hannover , Hannover , Germany
- d Laboratory for Nanocomposite Materials, Department of Photonics, Faculty of Physics , Saint-Petersburg State University , Saint-Petersburg , Russia
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Alrobayi EM, Algubili AM, Aljeboree AM, Alkaim AF, Hussein FH. Investigation of photocatalytic removal and photonic efficiency of maxilon blue dye GRL in the presence of TiO2 nanoparticles. PARTICULATE SCIENCE AND TECHNOLOGY 2015. [DOI: 10.1080/02726351.2015.1120836] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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