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Tran HD, Nguyen DQ, Do PT, Tran UNP. Kinetics of photocatalytic degradation of organic compounds: a mini-review and new approach. RSC Adv 2023; 13:16915-16925. [PMID: 37283872 PMCID: PMC10241197 DOI: 10.1039/d3ra01970e] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 05/24/2023] [Indexed: 06/08/2023] Open
Abstract
Organic compounds are widespread pollutants in wastewater, causing significant risks for living organisms. In terms of advanced oxidation processes, photocatalysis is known as an effective technology for the oxidation and mineralization of numerous non-biodegradable organic contaminants. The underlying mechanisms of photocatalytic degradation can be explored through kinetic studies. In previous works, Langmuir-Hinshelwood and pseudo-first-order models were commonly applied to fit batch-mode experimental data, revealing critical kinetic parameters. However, the application or combination conditions of these models were inconsistent or ignored. This paper briefly reviews kinetic models and various factors influencing the kinetics of photocatalytic degradation. In this review, kinetic models are also systemized by a new approach to establish a general concept of a kinetic model for the photocatalytic degradation of organic compounds in an aqueous solution.
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Affiliation(s)
- Hai D Tran
- Faculty of Environment, Ho Chi Minh University of Natural Resources and Environment Ho Chi Minh City Vietnam
| | - Dinh Quan Nguyen
- Laboratory of Biofuel and Biomass Research, Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward, Thu Duc District Ho Chi Minh City Vietnam
| | - Phuong T Do
- Office of R&D and External Relations, Ho Chi Minh University of Natural Resources and Environment Ho Chi Minh City 70000 Vietnam
| | - Uyen N P Tran
- Faculty of Engineering and Technology, Van Hien University Ho Chi Minh City Vietnam
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2
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Naboulsi A, El Mersly L, Yazid H, El Himri M, Rafqah S, El Haddad M. Adsorption behaviors and mechanisms by theoretical study of herbicide 2,4,5-Trichlorophenoxyacetic on activated carbon as a new biosorbent material. J Taiwan Inst Chem Eng 2023. [DOI: 10.1016/j.jtice.2022.104640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Ryu S, Naidu G, Moon H, Vigneswaran S. Continuous and selective copper recovery by multi-modified and granulated SBA-15. CHEMOSPHERE 2021; 271:129820. [PMID: 33736221 DOI: 10.1016/j.chemosphere.2021.129820] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/26/2021] [Accepted: 01/29/2021] [Indexed: 06/12/2023]
Abstract
Continuous and selective recovery of copper (Cu) from heavy metal wastewater not only mitigates the pollution of environment but also can be applied for industrial field. Due to several advantages such as large pore size, easy modification, physical and chemical stabilities, mesoporous silica material, SBA-15, has been synthesized via hydrothermal reaction in this study. For enhancing the adsorption capacity and selectivity for Cu ions, prepared SBA-15 was modified with manganese loading and amine-grafting (MN-SBA) then granulated by alginic-acid (GMN-SBA), successfully. Adsorption capacities for heavy metals such as Cu, Zn, Ni and Mn were 2.11, 1.24, 1.74 and 1.25 mmol/g on MN-SBA and decreased to 1.23, 0.68, 0.86 and 0.65 when it was granulated. Even though the adsorption capacities of GMN-SBA for heavy metals decreased by 40-50%, it enabled easy regeneration and separation process when applied for continuous fixed-bed column adsorption mode. Specifically, the results demonstrated that GMN-SBA was able to be reused for 5 times while maintaining over 80% adsorption capacities. Fixed-bed adsorption results were well explained by dynamic adsorption model incorporated with linear driving force approximation (LDFA) model. The simulation of fixed-bed adsorption tests was proceeded in terms of bed length, feeding concentration and flow rate, and it showed the breakthrough times were shifted in the axis of time. In multi-component adsorption, LDFA model showed a high overshoot phenomenon of the breakthrough curves for Zn, Ni and Mn compared to Cu. This reflected the high affinity of Cu towards GMN-SBA compared to other heavy metals.
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Affiliation(s)
- SeongChul Ryu
- Faculty of Engineering and IT, University of Technology Sydney, P.O. Box 123, Broadway, Ultimo, NSW 2007, Australia
| | - Gayathri Naidu
- Faculty of Engineering and IT, University of Technology Sydney, P.O. Box 123, Broadway, Ultimo, NSW 2007, Australia
| | - Hee Moon
- School of Chemical Engineering, Chonnam National University, 77 Yongbong-ro, Gwangju, 61186, Republic of Korea
| | - Saravanamuthu Vigneswaran
- Faculty of Engineering and IT, University of Technology Sydney, P.O. Box 123, Broadway, Ultimo, NSW 2007, Australia.
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TiO2 and TiO2-Carbon Hybrid Photocatalysts for Diuron Removal from Water. Catalysts 2021. [DOI: 10.3390/catal11040457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
TiO2 and TiO2-activated carbon (AC) photocatalysts have been prepared (by sol-gel synthesis), characterized, and tested in the removal of diuron from water under simulated solar light. The preparation variables of the two series of catalysts are: (i) heat-treatment temperature of bare TiO2 (350, 400, 450 and 500 °C) and (ii) activated carbon content (0.5, 1, 5, and 10 wt.%) in TiO2-AC samples heat-treated at 350 °C. The activated carbon was previously prepared by hydrothermal carbonization of saccharose and has spherical shape. The heat-treatment temperature does not determine the efficiency of TiO2 for diuron photocatalytic degradation, but clearly influences the diuron adsorption capacity. The capacity of TiO2-AC samples for diuron removal increases with the carbon content and it is the result of combined diuron adsorption and photodegradation. Thus, the sample with highest carbon content (10 wt.% nominal) leads to the highest diuron removal. The TiO2-AC photocatalysts have proved to be capable of degrading diuron previously adsorbed in dark conditions, which allows their regeneration.
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Optical Management of CQD/AgNP@SiNW Arrays with Highly Efficient Capability of Dye Degradation. Catalysts 2021. [DOI: 10.3390/catal11030399] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The facile synthetic method for the preparation of incorporated carbon quantum dots (CQDs)/Ag nanoparticles (AgNPs) with well-aligned silicon nanowire (SiNW) arrays is demonstrated, offering the superior photodegradation capabilities covering UV to visible wavelength regions. By examining the morphology, microstructure, crystallinity, chemical feature, surface groups, light-emitting, and reflection characteristics, these hybrid heterostructures are systematically identified. Moreover, the involving degradation kinetics, band diagram, cycling capability, and underlying mechanism of photodegradation are investigated, validating their remarkable and reliable photocatalytic performances contributed from the strongly reduced light reflectivity, superior capability of charge separation, and sound wettability with dye solutions.
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6
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Methyl Orange Photo-Degradation by TiO2 in a Pilot Unit under Different Chemical, Physical, and Hydraulic Conditions. Processes (Basel) 2021. [DOI: 10.3390/pr9020205] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The photo-catalytic degradation of a textile azo-dye as Methyl Orange was studied in an innovative unit constituted by a channel over which a layer of titanium dioxide (TiO2) catalyst in anatase form was deposited and activated by UVB irradiation. The degradation kinetics were followed after variation of the chemical, physical, and hydraulic/hydrodynamic parameters of the system. For this purpose, the influence of the TiO2 dosage (g/cm3), dye concentration (mg/L), pH of the solution, flow-rate (L/s), hydraulic load (cm), and irradiation power (W) were evaluated on the degradation rates. It was observed that the maximum dosage of TiO2 was 0.79 g/cm3 while for higher dosage a reduction of homogeneity of the cement conglomerate occurred. The Langmuir–Hinshelwood (LH) kinetic model was followed up to a dye concentration around 1 mg/L. It was observed that with the increase of the flow rate, an increase of the degradation kinetics was obtained, while the further increase of the flow-rate associated with the modification of the hydraulic load determined a decrease of the kinetic rates. The results also evidenced an increase of the kinetic rates with the increase of the UVB intensity. A final comparison with other dyes such as Methyl Red and Methylene Blue was carried out in consideration of the pH of the solution, which sensibly affected the removal efficiencies.
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Flores K, Valdes C, Ramirez D, Eubanks TM, Lopez J, Hernandez C, Alcoutlabi M, Parsons JG. The effect of hybrid zinc oxide/graphene oxide (ZnO/GO) nano-catalysts on the photocatalytic degradation of simazine. CHEMOSPHERE 2020; 259:127414. [PMID: 32599381 DOI: 10.1016/j.chemosphere.2020.127414] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 06/11/2020] [Accepted: 06/11/2020] [Indexed: 06/11/2023]
Abstract
The photocatalytic degradation of simazine (SIM) was investigated using zinc oxide/graphene oxide (ZnO/GO) composite materials under visible light irradiation. The reaction kinetics was studied to optimize the reaction parameters for efficient degradation of SIM. Batch studies were performed to investigate the effects of initial reaction pH, the loading of the ZnO onto GO, and mass of catalyst on the removal of SIM from aqueous solution. A pH of 2 was determined to be the optimal reaction pH for the different ZnO-loaded GO catalysts. In addition, a mass of 40 mg of catalyst in the reaction was observed to be the most effective for the catalysts synthesized using 20 and 30 mmol of Zn2+ ions; whereas a mass of 10 mg was most effective for the ZnO/GO composite material synthesized using 10 mmol Zn2+ ions. The reaction was observed to follow a second-order kinetics for the degradation process. Furthermore, the synthesized ZnO/GO composite catalysts resulted in higher reaction rates than those observed for pure ZnO. The 30 mmol ZnO/GO composite expressed a rate of SIM degradation ten times greater than the rate observed for pure ZnO, and sixty-two times greater than the rate of photolysis. In addition, the catalyst cycling exhibited a constant photocatalytic activity for the ZnO/GO composite over three reaction cycles without the need of a conditioning cycle.
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Affiliation(s)
- K Flores
- Department of Chemistry, University of Texas Rio Grande Valley, 1 W University Blvd., Brownsville, TX, 78521, USA
| | - C Valdes
- Department of Chemistry, University of Texas Rio Grande Valley, 1 W University Blvd., Brownsville, TX, 78521, USA
| | - D Ramirez
- Department of Chemistry, University of Texas Rio Grande Valley, 1 W University Blvd., Brownsville, TX, 78521, USA
| | - T M Eubanks
- Department of Chemistry, University of Texas Rio Grande Valley, 1 W University Blvd., Brownsville, TX, 78521, USA
| | - J Lopez
- Department of Mechanical Engineering, University of Texas Rio Grande Valley, 1201 University Dr, Edinburg, TX, 78539, USA
| | - C Hernandez
- Department of Mechanical Engineering, University of Texas Rio Grande Valley, 1201 University Dr, Edinburg, TX, 78539, USA
| | - M Alcoutlabi
- Department of Mechanical Engineering, University of Texas Rio Grande Valley, 1201 University Dr, Edinburg, TX, 78539, USA
| | - J G Parsons
- Department of Chemistry, University of Texas Rio Grande Valley, 1 W University Blvd., Brownsville, TX, 78521, USA.
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Chaki Borrás M, Sluyter R, Barker PJ, Konstantinov K, Bakand S. Y 2O 3 decorated TiO 2 nanoparticles: Enhanced UV attenuation and suppressed photocatalytic activity with promise for cosmetic and sunscreen applications. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 207:111883. [PMID: 32344334 DOI: 10.1016/j.jphotobiol.2020.111883] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 04/03/2020] [Accepted: 04/15/2020] [Indexed: 01/08/2023]
Abstract
Nanoparticulate titanium dioxide (TiO2) is widely used in cosmetic products and sunscreens. However, primarily due to their photocatalytic activity, some TiO2 products have been shown to be cytotoxic. Thus, the aim of this study was to reduce the photoactivity and consequent cytotoxicity of TiO2nanoparticles. As such, in this work, yttrium oxide (Y2O3) was deposited onto TiO2, at 5% and 10% Y/Ti weight ratio, via a hydrothermal method. The nanocomposites produced, TiO2@Y2O3 5 and 10 wt%, were characterised to assess their physical, photochemical and toxicological properties. These materials exhibit a uniform yttria coating, enhanced UV attenuation in the 280-350 nm range and significantly reduced photoactivity compared with a pristine commercial TiO2 sample (Degussa Aeroxide® P25). Furthermore, the comparative cytotoxicity and photo-cytotoxicity of these materials to a human keratinocyte cell line (HaCaT), was assessed using a colorimetric tetrazolium salt (MTS) assay. Following 24-hour incubation with cells, both Y2O3 loadings exhibited improved biocompatibility with HaCaT cells, compared to the pristine TiO2 sample, under all subsequent test conditions. In conclusion, the results highlight the potential of these materials for use in products, applied topically, with sun protection in mind.
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Affiliation(s)
- Marcela Chaki Borrás
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, Australia; School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - Ronald Sluyter
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia; Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia; Molecular Horizons, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Philip J Barker
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Konstantin Konstantinov
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, Australia; Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia
| | - Shahnaz Bakand
- Illawarra Health and Medical Research Institute, Wollongong, NSW 2522, Australia; School of Health and Society, University of Wollongong, Wollongong, NSW 2522, Australia.
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Basu P, Chakraborty J, Ganguli N, Mukherjee K, Acharya K, Satpati B, Khamrui S, Mandal S, Banerjee D, Goswami D, Nambissan PMG, Chatterjee K. Defect-Engineered MoS 2 Nanostructures for Reactive Oxygen Species Generation in the Dark: Antipollutant and Antifungal Performances. ACS APPLIED MATERIALS & INTERFACES 2019; 11:48179-48191. [PMID: 31795638 DOI: 10.1021/acsami.9b12988] [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] [Indexed: 06/10/2023]
Abstract
Meticulous surface engineering of layered structures toward new functionalities is a demanding challenge to the scientific community. Here, we introduce defects on varied MoS2 surfaces by suitable doping of nitrogen atoms in a sulfur-rich reaction environment, resulting in stable and scalable phase conversion. The experimental characterizations along with the theoretical calculations within the framework of density functional theory establish the impact of nitrogen doping on stabilization of defects and reconstruction of the 2H to 1T phase. The as-synthesized MoS2 samples exhibit excellent dye removal capacity in the dark, facilitated by a synergistic effect of reactive oxygen species (ROS) generation and adsorption. Positron annihilation spectroscopy and electron paramagnetic resonance studies substantiate the role of defects and associated sulfur vacancies toward ROS generation in the dark. Further, on the basis of its ample ROS generation in the dark and in the light, the commendable antimicrobial activity of the prepared MoS2 samples against fungal pathogen Alternaria alternata has been demonstrated. Thus, the present study opens up a futuristic avenue to develop newer functional materials through defect engineering by suitable dopants toward superior performances in environment issues.
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Affiliation(s)
- Parbati Basu
- Department of Physics , Vidyasagar University , Midnapore 721102 , India
| | | | - Nirmal Ganguli
- Department of Physics , IISER Bhopal , Bhauri, Bhopal 462066 , India
| | - Khushi Mukherjee
- Molecular And Applied Mycology and Plant Pathology Laboratory, Department of Botany , University of Calcutta , Kolkata 700019 , India
| | - Krishnendu Acharya
- Molecular And Applied Mycology and Plant Pathology Laboratory, Department of Botany , University of Calcutta , Kolkata 700019 , India
| | | | - Sudipta Khamrui
- Department of Physics , IIT Kharagpur , Kharagpur 721302 , India
| | - Suman Mandal
- Department of Physics , IIT Kharagpur , Kharagpur 721302 , India
| | | | - Dipak Goswami
- Department of Physics , IIT Kharagpur , Kharagpur 721302 , India
| | | | - Kuntal Chatterjee
- Department of Physics , Vidyasagar University , Midnapore 721102 , India
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Ryu S, Naidu G, Moon H, Vigneswaran S. Selective copper extraction by multi-modified mesoporous silica material, SBA-15. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 697:134070. [PMID: 31473546 DOI: 10.1016/j.scitotenv.2019.134070] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 08/03/2019] [Accepted: 08/22/2019] [Indexed: 06/10/2023]
Abstract
Selective copper (Cu) recovery from wastewater mitigates environmental pollution and is economically valuable. Mesoporous silica adsorbents, SBA-15, with amine-grafting (SBA-15-NH2) and manganese loading along with amine-grafting (Mn-SBA-15-NH2) were fabricated using KMnO4 and 3-aminopropyltriethoxysilane. The characteristics of the synthesized adsorbents were evaluated in detail in terms of its crystal structure peaks, surface area and pore size distribution, transmission electron microscope and X-ray photoelectron spectroscopy. The results established the 2.08mmol/g of Cu adsorption capacity on Mn-SBA-15-NH2. Furthermore, in a mixed heavy metal solution, high selective Cu adsorption capacity on Mn-SBA-15-NH2 (2.01mmol/g) was achieved while maintaining 96% adsorption amount as that of a single Cu solution. Comparatively, Cu adsorption on SBA-15-NH2 decreased by half due to high competition with other heavy metals. Optimal Cu adsorption occurred at pH5. This pH condition enabled grafted amine group in Mn-SBA-15-NH2 to form strong chelating bonds with Cu, avoiding protonation of amine group (below pH5) as well as precipitation (above pH5). The adsorption equilibrium well fitted to Langmuir and Freundlich isotherm models, while kinetic results were represented by models of linear driving force approximation (LDFA) and pore diffusion model (PDM). High regeneration and reuse capacity of Mn-SBA-15-NH2 were well established by its capacity to maintain 90% adsorption capacity in a multiple adsorption-desorption cycle. Cu was selectively extracted from Mn-SBA-15-NH2 with an acid solution.
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Affiliation(s)
- Seongchul Ryu
- School of Civil and Environmental Engineering, University of Technology Sydney, P.O. Box 123, Broadway, Ultimo, NSW 2007, Australia
| | - Gayathri Naidu
- School of Civil and Environmental Engineering, University of Technology Sydney, P.O. Box 123, Broadway, Ultimo, NSW 2007, Australia
| | - Hee Moon
- School of Chemical Engineering, Chonnam National University, 77 Yongbong-ro, Gwangju 61186, Republic of Korea
| | - Saravanamuthu Vigneswaran
- School of Civil and Environmental Engineering, University of Technology Sydney, P.O. Box 123, Broadway, Ultimo, NSW 2007, Australia.
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Mora LD, Bonfim LF, Barbosa LV, da Silva TH, Nassar EJ, Ciuffi KJ, González B, Vicente MA, Trujillano R, Rives V, Pérez-Bernal ME, Korili S, Gil A, de Faria EH. White and Red Brazilian São Simão's Kaolinite-TiO 2 Nanocomposites as Catalysts for Toluene Photodegradation from Aqueous Solutions. MATERIALS 2019; 12:ma12233943. [PMID: 31795158 PMCID: PMC6926498 DOI: 10.3390/ma12233943] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/20/2019] [Accepted: 11/26/2019] [Indexed: 11/16/2022]
Abstract
The presence of volatile organic compounds in groundwater is a major concern when it is used as a drinking water source because many of these compounds can adversely affect human health. This work reports on the preparation and characterization of white and red Brazilian São Simão's kaolinite-TiO2 nanocomposites and their use as catalysts in the photochemical degradation of toluene, a significant volatile organic compound. The nanocomposites were prepared by a sol-gel procedure, using titanium bis(triethanolaminate)diisopropoxide as a precursor. Thermal treatments of the nanocomposites led to different polymorphic titania phases, while the clay changed from kaolinite to metakaolinite. This structural evolution strongly affected the photocatalytic degradation behavior-all the solids efficiently degraded toluene and the solid calcined at 400 °C, formed by kaolinite and anatase, showed the best behavior (90% degradation). On extending the photochemical treatment up to 48 h, high mineralization levels were reached. The advantage of photodegradation using the nanocomposites was confirmed by comparing the results from isolated components (titanium dioxide and kaolinite) to observe that the nanocomposites displayed fundamental importance to the photodegradation pathways of toluene.
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Affiliation(s)
- Lucas D. Mora
- Grupo de Pesquisas em Materiais Lamelares Híbridos (GPMatLam), Universidade de Franca (Unifran), Av. Dr. Armando Salles Oliveira, 201 Parque Universitário, Franca-SP 14404-600, Brazil; (L.D.M.); (L.F.B.); (L.V.B.); (T.H.d.S.); (E.J.N.); (K.J.C.)
| | - Larissa F. Bonfim
- Grupo de Pesquisas em Materiais Lamelares Híbridos (GPMatLam), Universidade de Franca (Unifran), Av. Dr. Armando Salles Oliveira, 201 Parque Universitário, Franca-SP 14404-600, Brazil; (L.D.M.); (L.F.B.); (L.V.B.); (T.H.d.S.); (E.J.N.); (K.J.C.)
| | - Lorrana V. Barbosa
- Grupo de Pesquisas em Materiais Lamelares Híbridos (GPMatLam), Universidade de Franca (Unifran), Av. Dr. Armando Salles Oliveira, 201 Parque Universitário, Franca-SP 14404-600, Brazil; (L.D.M.); (L.F.B.); (L.V.B.); (T.H.d.S.); (E.J.N.); (K.J.C.)
| | - Tiago H. da Silva
- Grupo de Pesquisas em Materiais Lamelares Híbridos (GPMatLam), Universidade de Franca (Unifran), Av. Dr. Armando Salles Oliveira, 201 Parque Universitário, Franca-SP 14404-600, Brazil; (L.D.M.); (L.F.B.); (L.V.B.); (T.H.d.S.); (E.J.N.); (K.J.C.)
| | - Eduardo J. Nassar
- Grupo de Pesquisas em Materiais Lamelares Híbridos (GPMatLam), Universidade de Franca (Unifran), Av. Dr. Armando Salles Oliveira, 201 Parque Universitário, Franca-SP 14404-600, Brazil; (L.D.M.); (L.F.B.); (L.V.B.); (T.H.d.S.); (E.J.N.); (K.J.C.)
| | - Katia J. Ciuffi
- Grupo de Pesquisas em Materiais Lamelares Híbridos (GPMatLam), Universidade de Franca (Unifran), Av. Dr. Armando Salles Oliveira, 201 Parque Universitário, Franca-SP 14404-600, Brazil; (L.D.M.); (L.F.B.); (L.V.B.); (T.H.d.S.); (E.J.N.); (K.J.C.)
| | - Beatriz González
- GIR-QUESCAT, Dep. de Química Inorgánica, Universidad de Salamanca, E–37008 Salamanca, Spain; (B.G.); (M.A.V.); (R.T.); (V.R.); (M.E.P.-B.)
| | - Miguel A. Vicente
- GIR-QUESCAT, Dep. de Química Inorgánica, Universidad de Salamanca, E–37008 Salamanca, Spain; (B.G.); (M.A.V.); (R.T.); (V.R.); (M.E.P.-B.)
| | - Raquel Trujillano
- GIR-QUESCAT, Dep. de Química Inorgánica, Universidad de Salamanca, E–37008 Salamanca, Spain; (B.G.); (M.A.V.); (R.T.); (V.R.); (M.E.P.-B.)
| | - Vicente Rives
- GIR-QUESCAT, Dep. de Química Inorgánica, Universidad de Salamanca, E–37008 Salamanca, Spain; (B.G.); (M.A.V.); (R.T.); (V.R.); (M.E.P.-B.)
| | - Maria Elena Pérez-Bernal
- GIR-QUESCAT, Dep. de Química Inorgánica, Universidad de Salamanca, E–37008 Salamanca, Spain; (B.G.); (M.A.V.); (R.T.); (V.R.); (M.E.P.-B.)
| | - Sophia Korili
- INAMAT, Departamento de Ciencias, Universidad Pública de Navarra, E–31006 Pamplona, Spain; (S.K.); (A.G.)
| | - Antonio Gil
- INAMAT, Departamento de Ciencias, Universidad Pública de Navarra, E–31006 Pamplona, Spain; (S.K.); (A.G.)
| | - Emerson H. de Faria
- Grupo de Pesquisas em Materiais Lamelares Híbridos (GPMatLam), Universidade de Franca (Unifran), Av. Dr. Armando Salles Oliveira, 201 Parque Universitário, Franca-SP 14404-600, Brazil; (L.D.M.); (L.F.B.); (L.V.B.); (T.H.d.S.); (E.J.N.); (K.J.C.)
- Correspondence: ; Tel.: +55-16-3711-8969
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Powder and Nanotubes Titania Modified by Dye Sensitization as Photocatalysts for the Organic Pollutants Elimination. NANOMATERIALS 2019; 9:nano9040517. [PMID: 30987003 PMCID: PMC6523326 DOI: 10.3390/nano9040517] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 03/29/2019] [Accepted: 03/29/2019] [Indexed: 11/17/2022]
Abstract
In this study, titanium dioxide powder obtained by the sol-gel method and TiO₂ nanotubes, were prepared. In order to increase the TiO₂ photoactivity, the powders and nanotubes obtained were modified by dye sensitization treatment during the oxide synthesis. The sensitizers applied were Quinizarin (Q) and Zinc protoporphyrin (P). The materials synthesized were extensively characterized and it was found that the dye sensitization treatment leads to modify the optical and surface properties of Titania. It was also found that the effectiveness of the dye-sensitized catalysts in the phenol and methyl orange (MO) photodegradation strongly depends on the dye sensitizer employed. Thus, the highest degradation rate for MO was obtained over the conventional Q-TiO₂ photocatalyst. In the case of the nanotubes series, the most effective photocatalyst in the MO degradation was based on TiO₂-nanotubes sensitized with the dye protoporfirin (ZnP). Selected catalysts were also tested in the phenol and MO photodegradation under visible light and it was observed that these samples are also active under this radiation.
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Zhang T, Yang Y, Li X, Wang N, Zhou Z. Regeneration of 4-chlorophenol from spent powdered activated carbon by ultrasound. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:9161-9173. [PMID: 30715713 DOI: 10.1007/s11356-019-04392-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 01/25/2019] [Indexed: 06/09/2023]
Abstract
Ultrasound-assisted regeneration of powdered activated carbon (PAC) saturated with 4-chlorophenol (4-CP) was investigated in this work. The variables, i.e., acoustic frequency, density levels, regenerating solution species, spent PAC mass, and the number of repeated cycle, were optimized. The UV-Vis spectra, thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET), and pore structure analysis were used to characterize the regenerated PAC as compared to the virgin and spent PAC. The adsorption experiments indicated that the adsorption kinetics of 4-CP fitted well with the pseudo-second-order model, and the main chemisorption process was nonlinear and heterogeneous. The desorption results showed that the optimized regenerated conditions were identified as 40 kHz of frequency, 0.18 W/mL of sonication intensity, 0.1 M NaOH and 50% (v/v) ethyl alcohol mixture of regeneration solution, and 1 g/L of saturated PAC mass. Under this condition, the regeneration efficiency reached up to 86.81%. Hydroxylated oxidation products especially benzoquinone and hydroquinone were formed during ultrasound regeneration. Ultrasound mainly acted on surface functionalities, mesopores, and macropores of PAC through the hydroxyl radical oxidization resulted from the cavitation effect.
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Affiliation(s)
- Tingting Zhang
- College of Architecture and Civil engineering, Beijing University of Technology, No. 100 Xi Da Wang Road, Chao Yang District, Beijing, 100124, People's Republic of China
| | - Yanling Yang
- College of Architecture and Civil engineering, Beijing University of Technology, No. 100 Xi Da Wang Road, Chao Yang District, Beijing, 100124, People's Republic of China
| | - Xing Li
- College of Architecture and Civil engineering, Beijing University of Technology, No. 100 Xi Da Wang Road, Chao Yang District, Beijing, 100124, People's Republic of China
| | - Nan Wang
- College of Architecture and Civil engineering, Beijing University of Technology, No. 100 Xi Da Wang Road, Chao Yang District, Beijing, 100124, People's Republic of China
| | - Zhiwei Zhou
- College of Architecture and Civil engineering, Beijing University of Technology, No. 100 Xi Da Wang Road, Chao Yang District, Beijing, 100124, People's Republic of China.
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14
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Packed Bed Photoreactor for the Removal of Water Pollutants Using Visible Light Emitting Diodes. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9030472] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A packed bed photoreactor was developed using a structured photocatalyst active under visible light. The packed bed reactor was irradiated by visible light-emitting diodes (LEDs) for the evaluation of photocatalytic activity in the removal of different types of water pollutants. By using a flexible LEDs strip as the external light source, it was possible to use a simple cylindrical geometry for the photoreactor, thereby enhancing the contact between the photocatalyst and the water to be treated. The visible light active structured photocatalyst was composed by N-doped TiO2 particles supported on polystyrene spheres. Photocatalytic results showed that the almost total methylene blue decolorization was achieved after 120 min of irradiation. Moreover, the developed packed bed photoreactor was effective in the removal of ceftriaxone, paracetamol, and caffeine, allowing it to reach the almost total degradation of the pollutants and a total organic carbon removal above 80% after 180 min of visible light irradiation.
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15
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Petrella A, Spasiano D, Cosma P, Rizzi V, Race M. Evaluation of the hydraulic and hydrodynamic parameters influencing photo-catalytic degradation of bio-persistent pollutants in a pilot plant. CHEM ENG COMMUN 2019. [DOI: 10.1080/00986445.2018.1555534] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Andrea Petrella
- Dipartimento di Ingegneria Civile, Ambientale, Edile, del Territorio e di Chimica, Politecnico di Bari,Bari, Italy
| | - Danilo Spasiano
- Dipartimento di Ingegneria Civile, Ambientale, Edile, del Territorio e di Chimica, Politecnico di Bari,Bari, Italy
| | - Pinalysa Cosma
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro,” Bari, Italy
| | - Vito Rizzi
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro,” Bari, Italy
| | - Marco Race
- Dipartimento di Ingegneria Civile e Meccanica Università di Cassino e del Lazio Meridionale, Cassino, Italy
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16
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Elbasuney S, Elsayed MA, Mostafa SF, Khalil WF. MnO2 Nanoparticles Supported on Porous Al2O3 Substrate for Wastewater Treatment: Synergy of Adsorption, Oxidation, and Photocatalysis. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-018-01057-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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17
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Tang CH, Hsiao PH, Chen CY. Efficient Photocatalysts Made by Uniform Decoration of Cu 2O Nanoparticles on Si Nanowire Arrays with Low Visible Reflectivity. NANOSCALE RESEARCH LETTERS 2018; 13:312. [PMID: 30288628 PMCID: PMC6172162 DOI: 10.1186/s11671-018-2735-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 09/26/2018] [Indexed: 06/08/2023]
Abstract
Highly uniformed decorations of Cu2O nanoparticles on the sidewalls of silicon nanowires (SiNWs) with high aspect ratio were prepared through a two-step electroless deposition at room temperature. Morphology evolutions and photocatalytic performance of SiNWs decorated with aggregated and dispersed Cu2O nanoparticles were unveiled, and the correlated photodegradation kinetics was identified. In comparison with the conventional direct loadings where the aggregated Cu2O/SiNW structures were created, the uniform incorporation of Cu2O with SiNWs exhibited more than three and nine times of improved photodegradation efficiency than the aggregated-Cu2O/SiNWs and sole SiNWs, respectively.
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Affiliation(s)
- Chien-Hsin Tang
- Department of Materials Science and Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Po-Hsuan Hsiao
- Department of Materials Science and Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Chia-Yun Chen
- Department of Materials Science and Engineering, National Cheng Kung University, Tainan, 70101, Taiwan.
- Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan, 70101, Taiwan.
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18
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Sacco O, Vaiano V, Matarangolo M. ZnO supported on zeolite pellets as efficient catalytic system for the removal of caffeine by adsorption and photocatalysis. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.10.056] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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19
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Lusvardi G, Barani C, Giubertoni F, Paganelli G. Synthesis and Characterization of TiO₂ Nanoparticles for the Reduction of Water Pollutants. MATERIALS 2017; 10:ma10101208. [PMID: 29053593 PMCID: PMC5667014 DOI: 10.3390/ma10101208] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 10/13/2017] [Accepted: 10/18/2017] [Indexed: 11/16/2022]
Abstract
The aim of this manuscript was the optimization of the synthesis of TiO₂ nanoparticles (TiO₂ NPs) with conditions that could be easily reproducible at the industrial level. Several procedures were tested and those with C12H28O₄Ti and CO(NH₂)₂ as precursors seemed the most promising and, consequently, were improved with different molar ratios, lower temperatures and the addition of NH₄Cl as a secondary dopant of nitrogen. The obtained samples were studied with analytical techniques such as X-ray powder diffraction (XRPD) and field emission scanning electron microscopy (FESEM). To complete the study, dye degradation and bacteriological tests were also performed. The results indicate that it is possible to obtain TiO₂ NPs at lower temperatures with respect to those used in the literature; the best candidate that could satisfy all the requirements was a sample with a molar ratio of C12H28O₄Ti:CO(NH₂)₂ at 2:1 and obtained at 50 °C.
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Affiliation(s)
- Gigliola Lusvardi
- Department of Chemistry and Geological Sciences, University of Modena and Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy.
| | - Corrado Barani
- Barchemicals, Via S. Allende 14, 41051 Castelnuovo Rangone (MO), Italy.
| | | | - Giulia Paganelli
- Department of Chemistry and Geological Sciences, University of Modena and Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy.
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20
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Bendjabeur S, Zouaghi R, Kaabeche O, Sehili T. Parameters Affecting Adsorption and Photocatalytic Degradation Behavior of Gentian Violet under UV Irradiation with Several Kinds of TiO2 as a Photocatalyst. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2017. [DOI: 10.1515/ijcre-2016-0206] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The photocatalytic decolorization of Gentian violet (GV) from an aqueous solution was studied by focusing on comparison of the photoactivity of different type of TiO2 catalyst. The process was carried out under a variety of conditions. The efficiency of P25-Degussa and PC50-Millennium photocatalysts were compared. The effect of different parameters such as pH, initial dye concentration, catalyst loading and the presence of some anions on both adsorption in the absence of light and the degradation under UV irradiation have been studied. 365 nm UV-A lamp was employed as irradiation source. The kinetic study showed that no correlation was observed between the adsorption capacity of the catalyst and its photoactivity, despite of this the effect of various parameters on adsorption and photocatalytic kinetic behavior was practically similar on various catalysts. The photocatalytic degradation of GV followed first-order reaction kinetics and the higher adsorption and photocatalytic degradation were obtained at the alkaline medium (pH = 10 for P25 and pH = 8 for PC50). However, the reaction at the acidic medium was gradually delayed due to the effect of charge repulsion. The presence of some anions (Cl−, SO42−, NO3−) in the medium at higher concentration was found to reduce the adsorption and to inhibit the degradation.
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21
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Wang Y, Hu L, Zhang G, Yan T, Yan L, Wei Q, Du B. Removal of Pb(II) and methylene blue from aqueous solution by magnetic hydroxyapatite-immobilized oxidized multi-walled carbon nanotubes. J Colloid Interface Sci 2017; 494:380-388. [DOI: 10.1016/j.jcis.2017.01.105] [Citation(s) in RCA: 116] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 01/24/2017] [Accepted: 01/26/2017] [Indexed: 11/16/2022]
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22
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Lin L, Wu Q, Gong X, Zhang Y. Preparation of TiO 2 Nanotubes Loaded on Polyurethane Membrane and Research on Their Photocatalytic Properties. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2017; 2017:9629532. [PMID: 28194295 PMCID: PMC5282452 DOI: 10.1155/2017/9629532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Accepted: 12/26/2016] [Indexed: 05/24/2023]
Abstract
To solve the problem of separation and recovery of photocatalyst in water, the modification of TiO2 was studied as well as its immobilization and photocatalytic properties. To improve surface properties, TiO2 nanotubes were synthesized by a hydrothermal method and silylated by silane coupling agents to introduce a certain functional group. Supported on polyurethane (PU) membrane, TiO2 nanotubes were prepared to produce immobilized PU/TiO2. Catalysts were characterized and identified by means of Fourier-transform infrared spectroscopy (FTIR), attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR), and scanning electron microscopy (SEM). Results showed that silylated TiO2 nanotubes were well grafted on the surface of the activated PU membrane. With a 300 W high pressure mercury lamp as light source, the photocatalytic activity and stability of immobilized PU/TiO2 were investigated with degrading methyl orange. It was showed that the target is degraded by immobilized PU/TiO2 with high activation and the catalytic performance is stable for a long time if catalyst is washed with ethanol.
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Affiliation(s)
- Longli Lin
- College of Chemical Engineering, Guizhou University of Engineering Science, Bijie 551700, China
| | - Qijun Wu
- School of Chemical Engineering, Guizhou Institute of Technology, Guiyang 550003, China
| | - Xun Gong
- School of Light Industry, Guizhou Institute of Technology, Guiyang 550003, China
| | - Yu Zhang
- College of Chemical Engineering, Guizhou University of Engineering Science, Bijie 551700, China
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23
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Chen CY, Hsiao PH, Wei TC, Chen TC, Tang CH. Well incorporation of carbon nanodots with silicon nanowire arrays featuring excellent photocatalytic performances. Phys Chem Chem Phys 2017; 19:11786-11792. [DOI: 10.1039/c7cp01674c] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Broad-band and high efficiency photocatalytic systems were demonstrated through the incorporation of silicon nanowires with highly fluorescent carbon nanodots.
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Affiliation(s)
- Chia-Yun Chen
- Department of Materials Science and Engineering
- National Cheng Kung University
- Tainan 701
- Taiwan
| | - Po-Hsuan Hsiao
- Department of Materials Science and Engineering
- National Cheng Kung University
- Tainan 701
- Taiwan
| | - Ta-Cheng Wei
- Department of Materials Science and Engineering
- National Cheng Kung University
- Tainan 701
- Taiwan
| | - Ting-Chen Chen
- Department of Materials Science and Engineering
- National Cheng Kung University
- Tainan 701
- Taiwan
| | - Chien-Hsin Tang
- Department of Materials Science and Engineering
- National Cheng Kung University
- Tainan 701
- Taiwan
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24
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Synthesis of yttrium doped nanocrystalline ZnO and its photocatalytic activity in methylene blue degradation. ARAB J CHEM 2016. [DOI: 10.1016/j.arabjc.2012.04.023] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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25
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El Bekkali C, Bouyarmane H, Saoiabi S, El Karbane M, Rami A, Saoiabi A, Boujtita M, Laghzizil A. Low-cost composites based on porous titania-apatite surfaces for the removal of patent blue V from water: Effect of chemical structure of dye. J Adv Res 2016; 7:1009-1017. [PMID: 27857847 PMCID: PMC5106448 DOI: 10.1016/j.jare.2016.05.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Revised: 05/05/2016] [Accepted: 05/06/2016] [Indexed: 11/25/2022] Open
Abstract
Hydroxyapatite/titania nanocomposites (TiHAp) were synthesized from a mixture of a titanium alkoxide solution and dissolution products of a Moroccan natural phosphate. The simultaneous gelation and precipitation processes occurring at room temperature led to the formation of TiHAp nanocomposites. X-ray diffraction results indicated that hydroxyapatite and anatase (TiO2) were the major crystalline phases. The specific surface area of the nanocomposites increased with the TiO2 content. Resulting TiHAp powders were assessed for the removal of the patent blue V dye from water. Kinetic experiments suggested that a sequence of adsorption and photodegradation is responsible for discoloration of dye solutions. These results suggest that such hydroxyapatite/titania nanocomposites constitute attractive low-cost materials for the removal of dyes from industrial textile effluent.
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Affiliation(s)
- C. El Bekkali
- Laboratoire de Chimie Physique Générale, Faculté des Sciences, Université Mohammed V, Av. Ibn Batouta, B.P. 1014 Rabat, Morocco
| | - H. Bouyarmane
- Laboratoire de Chimie Physique Générale, Faculté des Sciences, Université Mohammed V, Av. Ibn Batouta, B.P. 1014 Rabat, Morocco
| | - S. Saoiabi
- Laboratoire de Chimie Physique Générale, Faculté des Sciences, Université Mohammed V, Av. Ibn Batouta, B.P. 1014 Rabat, Morocco
| | - M. El Karbane
- Laboratoire National du Contrôle des Médicaments, Rue Lamfaddal Cherkaoui, B.P. 6206 Rabat, Morocco
| | - A. Rami
- Laboratoire National du Contrôle des Médicaments, Rue Lamfaddal Cherkaoui, B.P. 6206 Rabat, Morocco
| | - A. Saoiabi
- Laboratoire de Chimie Physique Générale, Faculté des Sciences, Université Mohammed V, Av. Ibn Batouta, B.P. 1014 Rabat, Morocco
| | - M. Boujtita
- Chimie Interdisciplinarité: Synthèse, Analyse, Modélisation CNRS (CEISAM), Faculté des Sciences et Techniques, Université de Nantes – UBL, B.P. 92208, 44322 Nantes Cedex 03, France
| | - A. Laghzizil
- Laboratoire de Chimie Physique Générale, Faculté des Sciences, Université Mohammed V, Av. Ibn Batouta, B.P. 1014 Rabat, Morocco
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26
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Vinhal JO, Lima CF, Cassella RJ. Polyurethane foam loaded with sodium dodecylsulfate for the extraction of 'quat' pesticides from aqueous medium: Optimization of loading conditions. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2016; 131:72-78. [PMID: 27213562 DOI: 10.1016/j.ecoenv.2016.05.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Revised: 05/12/2016] [Accepted: 05/13/2016] [Indexed: 06/05/2023]
Abstract
The cationic herbicides paraquat, diquat and difenzoquat are largely used in different cultures worldwide. With this, there is an intrinsic risk of environmental contamination when these herbicides achieve natural waters. The goal of this work was to propose a novel and low-cost sorbent for the removal of the cited herbicides from aqueous medium. The proposed sorbent was prepared by loading polyurethane foam with sodium dodecylsulfate. The influence of several parameters (SDS concentration, HCl concentration and shaking time) on the loading process was investigated. The results obtained in this work demonstrated that all studied variables influenced the loading process, having significant effect on the extraction efficiency of the resulted PUF-SDS. At optimized conditions, the PUF was loaded by shaking 200mg of crushed foam with 200mL of a solution containing 5.0×10(-3)molL(-1) SDS and 0.25molL(-1) HCl, for 30min. The obtained PUF-SDS was efficient for removing the three herbicides from aqueous medium, achieving extraction percentages higher than 90%. The sorption process followed a pseudo second-order kinetics, which presented excellent predictive capacity of the amount of herbicide retained with time.
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Affiliation(s)
- Jonas O Vinhal
- Departamento de Química, Universidade Federal de Viçosa, Av. Peter Henry Rolfs s/n, Viçosa, MG 36570-000, Brazil; Instituto de Química, Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil
| | - Claudio F Lima
- Departamento de Química, Universidade Federal de Viçosa, Av. Peter Henry Rolfs s/n, Viçosa, MG 36570-000, Brazil
| | - Ricardo J Cassella
- Instituto de Química, Programa de Pós-Graduação em Química, Universidade Federal Fluminense, Outeiro de São João Batista s/n, Centro, Niterói, RJ 24020-141, Brazil.
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27
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Petrella A, Mascolo G, Murgolo S, Petruzzelli V, Ranieri E, Spasiano D, Petruzzelli D. Photocatalytic Oxidation of Organic Micro-Pollutants: Pilot Plant Investigation and Mechanistic Aspects of the Degradation Reaction. CHEM ENG COMMUN 2016. [DOI: 10.1080/00986445.2016.1188292] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Andrea Petrella
- Dipartimento di Ingegneria Civile, Ambientale, del Territorio, Edile e Chimica, Politecnico di Bari, Bari, Italy
| | - Giuseppe Mascolo
- Laboratorio di Chimica e Tecnologia delle Acque, IRSA, Consiglio Nazionale delle Ricerche, Bari, Italy
| | - Sapia Murgolo
- Laboratorio di Chimica e Tecnologia delle Acque, IRSA, Consiglio Nazionale delle Ricerche, Bari, Italy
| | - Valentina Petruzzelli
- Centro Interdipartimentale di Ricerca Industriale su Edilizia e Costruzioni, Bologna, Italy
| | - Ezio Ranieri
- Dipartimento di Ingegneria Civile, Ambientale, del Territorio, Edile e Chimica, Politecnico di Bari, Bari, Italy
| | - Danilo Spasiano
- Dipartimento di Ingegneria Civile, Ambientale, del Territorio, Edile e Chimica, Politecnico di Bari, Bari, Italy
| | - Domenico Petruzzelli
- Dipartimento di Ingegneria Civile, Ambientale, del Territorio, Edile e Chimica, Politecnico di Bari, Bari, Italy
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28
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Araújo DAG, Faria ACA, Takeuchi RM, Santos AL. Could Voltammetry be an Effective Alternative Technique to Study Adsorption Kinetics of Electroactive Metal Ions? ELECTROANAL 2016. [DOI: 10.1002/elan.201500529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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29
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Gu Z, Gao M, Lu L, Liu Y, Yang S. Montmorillonite Functionalized with Zwitterionic Surfactant as a Highly Efficient Adsorbent for Herbicides. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b00438] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zheng Gu
- State Key
Laboratory of Heavy
Oil Processing, College of Science, China University of Petroleum, Beijing 102249, P. R. China
| | - Manglai Gao
- State Key
Laboratory of Heavy
Oil Processing, College of Science, China University of Petroleum, Beijing 102249, P. R. China
| | - Laifu Lu
- State Key
Laboratory of Heavy
Oil Processing, College of Science, China University of Petroleum, Beijing 102249, P. R. China
| | - Yuening Liu
- State Key
Laboratory of Heavy
Oil Processing, College of Science, China University of Petroleum, Beijing 102249, P. R. China
| | - Senfeng Yang
- State Key
Laboratory of Heavy
Oil Processing, College of Science, China University of Petroleum, Beijing 102249, P. R. China
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30
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Basha S, Keane D, Nolan K, Oelgemöller M, Lawler J, Tobin JM, Morrissey A. UV-induced photocatalytic degradation of aqueous acetaminophen: the role of adsorption and reaction kinetics. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:2219-2230. [PMID: 25173973 DOI: 10.1007/s11356-014-3411-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 08/04/2014] [Indexed: 06/03/2023]
Abstract
Nanostructured titania supported on activated carbon (AC), termed as integrated photocatalytic adsorbents (IPCAs), were prepared by ultrasonication and investigated for the photocatalytic degradation of acetaminophen (AMP), a common analgesic and antipyretic drug. The IPCAs showed high affinity towards AMP (in dark adsorption studies), with the amount adsorbed proportional to the TiO2 content; the highest adsorption was at 10 wt% TiO2. Equilibrium isotherm studies showed that the adsorption followed the Langmuir model, indicating the dependence of the reaction on an initial adsorption step, with maximum adsorption capacity of 28.4 mg/g for 10 % TiO2 IPCA. The effects of initial pH, catalyst amount and initial AMP concentration on the photocatalytic degradation rates were studied. Generally, the AMP photodegradation activity of the IPCAs was better than that of bare TiO2. Kinetic studies on the photocatalytic degradation of AMP under UV suggest that the degradation followed Langmuir-Hinshelwood (L-H) kinetics, with an adsorption rate constant (K) that was considerably higher than the photocatalytic rate constant (k r), indicating that the photocatalysis of AMP is the rate-determining step during the adsorption/photocatalysis process.
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Affiliation(s)
- Shaik Basha
- Discipline of Marine Biotechnology and Ecology, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavagnar, 364002, Gujarat, India
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31
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Chen CY, Hsu LJ. Kinetic study of self-assembly of Ni(ii)-doped TiO2 nanocatalysts for the photodegradation of azo pollutants. RSC Adv 2015. [DOI: 10.1039/c5ra16172j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ni(ii)-doped TiO2 nanoparticles were fabricated by a simple and reliable hydrothermal method.
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Affiliation(s)
- Chia-Yun Chen
- Department of Applied Materials and Optoelectronic Engineering
- National Chi Nan University
- Nantou 545
- Taiwan
| | - Li-Jen Hsu
- Department of Applied Materials and Optoelectronic Engineering
- National Chi Nan University
- Nantou 545
- Taiwan
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32
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Sargolzaei J, Hedayati Moghaddam A, Nouri A, Shayegan J. Modeling the Removal of Phenol Dyes Using a Photocatalytic Reactor with SnO2/Fe3O4Nanoparticles by Intelligent System. J DISPER SCI TECHNOL 2014. [DOI: 10.1080/01932691.2014.916222] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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33
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Amarathunga AAD, Kazama F. Photodegradation of chlorpyrifos with humic acid-bound suspended matter. JOURNAL OF HAZARDOUS MATERIALS 2014; 280:671-677. [PMID: 25222931 DOI: 10.1016/j.jhazmat.2014.08.063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 08/29/2014] [Accepted: 08/30/2014] [Indexed: 06/03/2023]
Abstract
Land exploitation in several developing countries, including tropical areas, has caused a rapid change of the landscape, from forest to farms. This has led to an increase of pesticide use and concentration of suspended matter in river waters, which may cause soil erosion of these areas. Humic acid (HA), one of the main components in the soil particulate organic matter, has a positive effect on the photodegradation of organic matter in water; however, the efficiency of HA-bound suspended matter (HABSM) for pesticide photodegradation is not known. The aim of this study is to clarify the effect of HABSM on the photodegradation of chlorpyrifos employed in artificial soil particulate covered with HA. Experiments were carried out in liquid HA phase, with/without HABSM phase and HABSM with additional LHA phase under light. The adsorption procedure of the pesticide on HABSM was also studied. Our results reveal that adsorption takes place within a short time period on HABSM and that photodegradation is successfully achieved. The additional LHA+HABSM phase have not demonstrated any significant effect of HA concentration to photodegradation of chlorpyrifos. For instance, when 2.0mg/L chlorpyrifos was used in the experiments, concentration reductions caused by adsorption, photodegradation under suspended matter and HABSM were found to be 19.3, 17.7, and 61.7% respectively. This finding suggests that HABSM can be considered as a potential catalyst for pesticide photodegradation under sunlight.
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Affiliation(s)
- A A D Amarathunga
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 4-3-11, Takeda, Kofu, Yamanashi 400-8511, Japan.
| | - F Kazama
- Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 4-3-11, Takeda, Kofu, Yamanashi 400-8511, Japan
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Nouri A, Sargolzaei J. Removal of Phenol Dyes Using a Photocatalytic Reactor with SnO2/Fe3O4Nanoparticles. J DISPER SCI TECHNOL 2014. [DOI: 10.1080/01932691.2013.826585] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Petrella A, Boghetich G, Petrella M, Mastrorilli P, Petruzzelli V, Petruzzelli D. Photocatalytic Degradation of Azo Dyes. Pilot Plant Investigation. Ind Eng Chem Res 2014. [DOI: 10.1021/ie403506s] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andrea Petrella
- Dipartimento di Ingegneria
Civile, Ambientale, del Territorio, Edile e di Chimica (DICATECh), Politecnico di Bari, 4, Via E. Orabona, 70125 Bari, Italy
| | - Giancarlo Boghetich
- Dipartimento di Ingegneria
Civile, Ambientale, del Territorio, Edile e di Chimica (DICATECh), Politecnico di Bari, 4, Via E. Orabona, 70125 Bari, Italy
| | - Mario Petrella
- Dipartimento di Ingegneria
Civile, Ambientale, del Territorio, Edile e di Chimica (DICATECh), Politecnico di Bari, 4, Via E. Orabona, 70125 Bari, Italy
| | - Piero Mastrorilli
- Dipartimento di Ingegneria
Civile, Ambientale, del Territorio, Edile e di Chimica (DICATECh), Politecnico di Bari, 4, Via E. Orabona, 70125 Bari, Italy
| | - Valentina Petruzzelli
- Dipartimento di Ingegneria
Civile, Ambientale, del Territorio, Edile e di Chimica (DICATECh), Politecnico di Bari, 4, Via E. Orabona, 70125 Bari, Italy
| | - Domenico Petruzzelli
- Dipartimento di Ingegneria
Civile, Ambientale, del Territorio, Edile e di Chimica (DICATECh), Politecnico di Bari, 4, Via E. Orabona, 70125 Bari, Italy
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Petrella A, Petrella M, Boghetich G, Mastrorilli P, Petruzzelli V, Ranieri E, Petruzzelli D. Laboratory Scale Unit for Photocatalytic Removal of Organic Micropollutants from Water and Wastewater. Methyl Orange Degradation. Ind Eng Chem Res 2013. [DOI: 10.1021/ie3027026] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrea Petrella
- Dipartimento di Ingegneria
Civile, Ambientale, del
Territorio, Edile e Chimica, Politecnico di Bari, 4, Via E. Orabona, 70125 Bari, Italy
| | - Mario Petrella
- Dipartimento di Ingegneria
Civile, Ambientale, del
Territorio, Edile e Chimica, Politecnico di Bari, 4, Via E. Orabona, 70125 Bari, Italy
| | - Giancarlo Boghetich
- Dipartimento di Ingegneria
Civile, Ambientale, del
Territorio, Edile e Chimica, Politecnico di Bari, 4, Via E. Orabona, 70125 Bari, Italy
| | - Piero Mastrorilli
- Dipartimento di Ingegneria
Civile, Ambientale, del
Territorio, Edile e Chimica, Politecnico di Bari, 4, Via E. Orabona, 70125 Bari, Italy
| | - Valentina Petruzzelli
- Dipartimento di Ingegneria
Civile, Ambientale, del
Territorio, Edile e Chimica, Politecnico di Bari, 4, Via E. Orabona, 70125 Bari, Italy
| | - Ezio Ranieri
- Dipartimento di Ingegneria
Civile, Ambientale, del
Territorio, Edile e Chimica, Politecnico di Bari, 4, Via E. Orabona, 70125 Bari, Italy
| | - Domenico Petruzzelli
- Dipartimento di Ingegneria
Civile, Ambientale, del
Territorio, Edile e Chimica, Politecnico di Bari, 4, Via E. Orabona, 70125 Bari, Italy
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Chen CY, Cheng MC, Chen AH. Photocatalytic decolorization of Remazol Black 5 and Remazol Brilliant Orange 3R by mesoporous TiO2. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2012; 102:125-133. [PMID: 22531430 DOI: 10.1016/j.jenvman.2012.02.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Revised: 12/19/2011] [Accepted: 02/18/2012] [Indexed: 05/31/2023]
Abstract
Mesoporous TiO2 microparticles (TiO2-11) were prepared through the micelle hydrothermal method using a 1:1 M ratio of 1-tetradecylamine:Ti(OiPr)4. TiO2-11 microparticles exhibited significantly higher decolorization percentage of Remazol Black 5 (RB5) and Remazol Brilliant Orange (3R) dyes than other TiO2 microparticles formed with different molar ratios of 1-tetradecylamine:Ti(OiPr)4, and P25 and anatase TiO2. The results showed that the decolorization of the dyes by the microparticles was affected by the different irradiation wavelengths, catalyst dosages, dye concentrations, initial pH values, as well as electron acceptors. The kinetic experiments with varying initial pH values were in accordance with the second-order model. In addition, the adsorption study of the dyes in the dark fitted well with the Langmuir isotherm model. With the addition of 20 mmol/mL of three electron acceptors, H2O2, KBrO3, and (NH4)2S2O8, the decolorization of the RB5 and 3R dyes increased by 54% and 35%, 59% and 41%, and 36% and 33%, respectively. Hence, this technique for the preparation of the mesoporous TiO2 microparticles can facilitate more efficient decolorization of dyes in an aqueous solution.
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Affiliation(s)
- Chia-Yun Chen
- Material and Chemical Research Laboratories, Industrial Technology Research Institute, Hsinchu 31040, Taiwan, ROC.
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Baransi K, Dubowski Y, Sabbah I. Synergetic effect between photocatalytic degradation and adsorption processes on the removal of phenolic compounds from olive mill wastewater. WATER RESEARCH 2012; 46:789-798. [PMID: 22153960 DOI: 10.1016/j.watres.2011.11.049] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Revised: 11/05/2011] [Accepted: 11/17/2011] [Indexed: 05/31/2023]
Abstract
The photocatalytic degradation of two phenolic compounds, p-coumaric acid and caffeic acid, was performed with a suspended mixture of TiO(2) and powdered activated carbon (PAC) (at pH=3.4 and 8). Adsorption, direct photolysis and photocatalytic degradation were studied under different pH and UV light sources (sunlight vs. 365nm UV lamps). The potential for reusing this catalyst mixture in sequential photocatalytic runs was examined as well. Quantum yields for the direct photolysis of caffeic acid under solar and artificial 365nm light were calculated (for the first time) as 0.005 and 0.011, respectively. A higher removal rate of contaminants by either adsorption or photocatalysis was obtained at a low pH (pH 4). Furthermore, the addition of PAC increased the removal efficiency of the phenolic compounds. Fast removal of the pollutants from the solution over three sequential runs was achieved only when both TiO(2) and PAC were present. This suggests that at medium phenolic concentrations, the presence of PAC as a co-sorbent reduces surface poisoning of the TiO(2) catalyst and hence improves photocatalysis degradation of phenolic pollutants. The adsorption equilibrium of caffeic acid or p-coumaric acid on TiO(2), PAC and the combined mixture of TiO(2) and PAC follows the Langmuir isotherm model. Experiments with PAC TiO(2) mixture and olive mill wastewater (anaerobically treated and diluted by a factor of 10) showed higher removal of polyphenols than of chemical oxygen demand (COD). 87% removal of total polyphenols, compared to 58% of COD, was achieved after 24h of exposure to 365nm irradiation (7.6W/m(2)) in the presence of a suspended mixture of TiO(2) and PAC, indicating "self-selectivity" of polyphenols.
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Affiliation(s)
- Katie Baransi
- The Galilee Society, Institute of Applied Research, P.O. Box 437, Shefa-Amr 20200, Israel
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da Costa E, Zamora PP, Zarbin AJ. Novel TiO2/C nanocomposites: Synthesis, characterization, and application as a photocatalyst for the degradation of organic pollutants. J Colloid Interface Sci 2012; 368:121-7. [DOI: 10.1016/j.jcis.2011.10.028] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Revised: 10/10/2011] [Accepted: 10/12/2011] [Indexed: 10/16/2022]
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Brigante M, Schulz PC. Remotion of the antibiotic tetracycline by titania and titania-silica composed materials. JOURNAL OF HAZARDOUS MATERIALS 2011; 192:1597-608. [PMID: 21782336 DOI: 10.1016/j.jhazmat.2011.06.082] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2011] [Accepted: 06/28/2011] [Indexed: 05/13/2023]
Abstract
Removal of the antibiotic tetracycline (TC) by TiO(2) and the mesoporous binary system TiO(2)-SiO(2) have been studied in batch experiments by performing adsorption isotherms/kinetics and photodegradation kinetics under different conditions of pH, supporting electrolyte concentration, temperature, adsorbent amount, and TiO(2)-loading. On the one hand, the adsorption of TC on the studied materials is strongly dependent on pH, increasing as pH decreases. The adsorption mechanism, controlled by diffusion processes, is strongly related to electrostatic attractions and H-bond formations mainly between amide, carbonylic and phenolic groups of the antibiotic and the functional groups of TiO(2). The adsorption capacity at constant pH increases in the order TiO(2)<TiO(2)-SiO(2) mainly due to the highly surface area that the silica offers and to the homogenously dispersion of the TiO(2) nanocrystallites. On the other hand, the photodegradation rate is affected by the presence of the studied materials at several pH, although its photocatalytic activities are more important at pH 7 or lower. The photodegradation mechanisms seem to be related to the formation of OH radicals which are responsible for the decomposition of TC. The composed titania-silica materials might act not only as an excellent adsorbent but also act as an alternative photocatalyst for pollution control.
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Affiliation(s)
- Maximiliano Brigante
- INQUISUR, Departamento de Química, Universidad Nacional del Sur, Av. Alem 1253, 8000 Bahía Blanca, Argentina.
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Brigante M, Schulz PC. Adsorption of paraquat on mesoporous silica modified with titania: effects of pH, ionic strength and temperature. J Colloid Interface Sci 2011; 363:355-61. [PMID: 21843892 DOI: 10.1016/j.jcis.2011.07.061] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2011] [Revised: 07/13/2011] [Accepted: 07/15/2011] [Indexed: 10/17/2022]
Abstract
The adsorption of the herbicide paraquat (PQ(2+)) on the binary system titania-silica has been studied in batch experiments by performing adsorption isotherms under different conditions of pH, supporting electrolyte concentration, and temperature. Adsorption kinetic on the studied material has also been carried out and discussed. PQ(2+) adsorption is very low on the bare silica surface but important on the composed TiO(2)-SiO(2) adsorbent. In this last case, the adsorption increases by increasing pH and decreasing electrolyte concentration. There are no significant effects of temperature on the adsorption. The increase of the adsorption in TiO(2)-SiO(2) seems to be related to an increase in acid sites of the supported titania and to the homogenously dispersion of the TiO(2) nanoparticles over the silica support. The adsorption takes place by direct binding of PQ(2+) to TiO(2) leading to the formation of surface species of the type SiO(2)-TiO(2)-PQ(2+). Electrostatic interactions and charge-transfer and outer-sphere complexes formations seem to play a key role in the adsorption mechanism. The analysis of thermodynamic parameters suggests that the adsorption on TiO(2)-SiO(2) is endothermic and spontaneous in nature.
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Affiliation(s)
- Maximiliano Brigante
- INQUISUR, Departamento de Química, Universidad Nacional del Sur, Av. Alem 1253, 8000 Bahía Blanca, Argentina.
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Determination of the photocatalytic activity of TiO2 with high adsorption capacity. REACTION KINETICS MECHANISMS AND CATALYSIS 2011. [DOI: 10.1007/s11144-011-0326-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Basha S, Barr C, Keane D, Nolan K, Morrissey A, Oelgemöller M, Tobin JM. On the adsorption/photodegradation of amoxicillin in aqueous solutions by an integrated photocatalytic adsorbent (IPCA): experimental studies and kinetics analysis. Photochem Photobiol Sci 2011; 10:1014-22. [DOI: 10.1039/c0pp00368a] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Madhavan J, Sathish Kumar PS, Anandan S, Grieser F, Ashokkumar M. Degradation of acid red 88 by the combination of sonolysis and photocatalysis. Sep Purif Technol 2010. [DOI: 10.1016/j.seppur.2010.07.001] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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45
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Ho DP, Vigneswaran S, Ngo HH. Integration of Photocatalysis and Microfiltration in Removing Effluent Organic Matter from Treated Sewage Effluent. SEP SCI TECHNOL 2010. [DOI: 10.1080/01496390903418014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Ho D, Vigneswaran S, Ngo H. Photocatalysis-membrane hybrid system for organic removal from biologically treated sewage effluent. Sep Purif Technol 2009. [DOI: 10.1016/j.seppur.2009.04.019] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Vlachos P, Stathatos E, Lyberatos G, Lianos P. Gas-phase photocatalytic degradation of 2,4,6-trichloroanisole in the presence of a nanocrystalline Titania film. Applications to the treatment of cork stoppers. CATAL COMMUN 2008. [DOI: 10.1016/j.catcom.2008.03.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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